JPH0685897B2 - Manual trigger-type dispenser and method for producing the same - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a manual type which is attached to a container opening and sucks a liquid from a container into a pump chamber of a cylinder by swinging a trigger to pressurize and discharge the liquid. The present invention relates to a trigger type dispenser and a method for producing the same.

[Prior art]

This type of manual trigger type dispenser includes a dispenser body detachably attached to the mouth of the container. The dispenser body is molded from a plastic material such as polyethylene. The dispenser body has an actuating lever, i.e., a swingably mounted upper half of the trigger, and a cylindrical lower half extending downwardly and attached to the mouth of the container by a bottle cap or directly. I have it. Usually, the lower half extends substantially vertically from the upper half. A cylinder defining the pump chamber inside is incorporated in the dispenser body. An inflow passage communicating with the pump chamber is provided in the dispenser body, and the axis of the inflow passage extends vertically. Further, an outlet passage communicating with the pump chamber is also provided in the dispenser body.

Generally, the inflow passage is formed substantially vertically in the lower half of the dispenser body, and the outflow passage is formed substantially horizontal in the upper half.
The axes of the inflow path and the outflow path are substantially orthogonal to each other. And the cylinder is integrally molded with the upper half of the dispenser body,
It is constructed coaxially with the outflow path. Further, the piston that interlocks with the trigger reciprocates almost horizontally in the cylinder.

Trigger type in which the cylinder is integrally molded with the upper half of the dispenser body and extends vertically downward, the upper half has a substantially horizontal tubular part with an outflow passage, and the piston vertically reciprocates in the cylinder. Dispensers are known (eg, US Pat. Nos. 3,840,157 and 4,227,650).
issue). In such dispensers, the inflow passage is provided in the piston rather than the lower half of the dispenser body. However, the axis of the cylinder integrally formed with the upper half is orthogonal to the axis of the outflow passage.

Further, there is also known a trigger type dispenser in which a piston is vertically arranged in a dispenser body and a cylinder reciprocates vertically along the piston (for example, US Pat. No. 4,371,097). In such a dispenser, the outflow passage is provided in the upper half of the dispenser body and the inflow passage is provided in the cylinder rather than the lower half. However, a tubular portion having an axis orthogonal to the axis of the outflow channel hangs from the upper edge of the upper half.

The main components of the dispenser, such as the cylinder, piston, trigger, bottle cap, etc., are also formed by injection molding from a plastic material, as with the dispenser body.

[Problems of conventional technology]

With such a known configuration, there are the following problems in forming the dispenser body.

The dispenser body having only one tubular portion is easily molded by moving the movable mold with respect to the fixed mold. However, as described above, in the known configuration, the dispenser body hangs from two tubular portions that are orthogonal to each other: the upper half and the lower half, the upper half and the cylinder, or the upper half. It is configured to have any combination of the tubular portion and the upper half portion. Therefore, during the molding process, the core pin is set in the vertical direction, for example, in the
It is necessary to move in the Y direction or the opposite Y direction in Fig. 12.
That is, only a pair of cavities 202 for the dispenser body can be arranged in series in the vertical direction on the fixed mold 204, and many dead spaces are left in the middle of the fixed mold. Therefore, the number of dispenser bodies that are molded in each injection cycle is limited.

Further, among the constituent parts of the dispenser, the dispenser body has a more complicated structure than the piston, the trigger and the like. The molten plastic is injected into the dispenser body cavity 202 under a large injection pressure.
Moreover, since the structure of the cavity 202 is complicated, the molten plastic is not rapidly filled in the cavity, and the injection time becomes long. Furthermore, since the moving time of the core pin is also required, the injection cycle becomes long. As described above, since the number of moldings in each injection cycle is small and the injection cycle is long, mass production of the dispenser body is difficult.

In order to provide the trigger type dispenser at a low cost, it is necessary not only to mass-produce the most structurally complicated dispenser body but also to easily assemble it with other components. However, in a known trigger type dispenser, a trigger, a piston, a cylinder, a bottle cap, etc. incorporated in the dispenser body,
It is not easy to fit and lock the dispenser body, and the assembly cannot be done quickly.

Also, as the basic structure of the dispenser, since the return spring is arranged between the piston and the cylinder, the movable body (generally the piston, or the cylinder in the cylinder movable type such as US Pat. No. 4,371,097) is pushed outward. And tend to leave. Therefore, if the piston and the cylinder are left with the return spring interposed, the piston and the cylinder are separated. And, in the known configuration, the return spring, the piston, and the cylinder are not configured to be integrally maintained without separation,
It is not considered to store and supply the assembly that integrates the piston and cylinder as a semi-finished product. Therefore, it is necessary to assemble and produce this kind of dispenser from the first step to the last step at the same factory in a lump, and it is impossible to carry out the production by the knockdown method in which the semi-finished products are supplied.

[Object of the Invention]

A first object of the present invention is to provide a manual trigger type dispenser that is equipped with a dispenser body having a configuration suitable for mass production, is easy to assemble, and can be produced by a knockdown system.

A second object of the present invention is to provide a method for producing a manual trigger type dispenser by a knockdown method.

[Outline of Invention]

In order to achieve the first object, in the present invention, neither the inflow passage nor the outflow passage is formed in the dispenser body. That is, both the piston and the cylinder are molded separately from the dispenser body. The piston has the valve seat of the secondary valve and is fixedly attached to the upper half of the dispenser body. In addition, the cylinder has a valve seat of a primary valve, is engaged with the trigger, and is disposed in the lower half portion of the dispenser so as to be reciprocally movable in association with the swing of the trigger. The inflow passage is formed in the cylinder and the outflow passage is formed in the piston. Further, a notch is provided in the dispenser body, and the dispenser body and the bottle cap are fitted and locked by utilizing elasticity. And the piston is
Engages and supports the cylinder in its initial position.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, a manual trigger type dispenser 10 according to the present invention comprises a dispenser body 12 injection molded from a plastic material such as polyethylene. The dispenser body 12 includes an upper half portion 14,
With a lower half 16 extending almost vertically downward from the upper half,
The lower half is the mouth 19 of the easy 18 containing the liquid to be drained.
At the same time, it is removably attached via the bottle cap 20. Furthermore, the dispenser 10 is configured to include a cylinder 22, a piston 24, and a trigger 26, and the cylinder, the piston, and the trigger are also injection-molded from a plastic material like the dispenser body.

As can be seen from FIG. 2, the upper half portion 14 of the dispenser body integrally includes a pair of side walls 14b hanging from an upper edge 14a, and a piston 24 is disposed between these side walls as described later. . Further, the trigger 26 is swingably attached to the piston 24. On the other hand, the lower half 16 is formed with a notch 28 in the front surface, and the presence of the notch gives elasticity to the lower edge of the lower half. Then, using elasticity, a locking means 32 for fitting and locking the dispenser body 12 and the base portion (bottom portion) 30 of the bottomed cylindrical bottle cap is provided in the lower half portion 16 of the dispenser body. (See Figure 3).

As shown in FIGS. 2 and 3, the locking means 32 is provided below the first locking portion 34 and the first locking member, and between the first locking member, And a second locking portion 36 for locking the base portion 30 of the bottle cap. In the example,
The first locking portion 34 is embodied as an axial rib provided on the back surface of the lower half 16 of the dispenser body. Also, the second locking portion 36 is the base portion 30 of the bottle cap.
Is formed having a slope 38 for guiding the insertion of the bottle cap and a horizontal surface 39 extending substantially parallel to the lower surface of the base of the bottle cap. The second locking portion 36 is largely cut out at a portion intersecting the extension line of the first locking portion 34. By providing such a notch, molding can be easily performed. Of course, the configurations of the first and second locking portions 34 and 36 are not limited to those shown in the drawings, and can take various other shapes.

The bottle cap 20 is formed, for example, with an internal thread portion, and the mess section is screwed onto the external thread portion of the container mouth portion 19, so that the bottle cap can be detachably attached to the dispenser body 12 in the container mouth portion. Mounted. Then, as shown in FIG. 1, the sealing collar 42 is housed in the bottle cap 20. The upper end of the sealing collar 42 is formed in a groove shape capable of accommodating the lower half portion 16 of the dispenser body. When the lower half portion 16 of the dispenser body is attached to the container mouth portion 19 by the bottle cap 20, the lower half portion 16 of the dispenser body is attached to the inner and outer walls 42a, 42b of the upper end of the sealing collar.
Stored in between, the ceiling collar upper end is the lower half lower end,
It is sandwiched between the upper ends of the container mouth portion 19 to ensure liquid tightness. Further, an engagement recess 43 is formed on the inner wall of the lower end of the lower half portion 16 of the dispenser body, and an engagement protrusion 44 engaged with the engagement recess is formed on the inner wall 42a of the ceiling of the sealing collar. In such a configuration, the engagement recess 43 and the engagement protrusion 44 are engaged with each other, so that the sealing collar 42 is prevented from falling off even before the bottle cap 20 is screwed into the container mouth 19. In addition, in the embodiment, the engagement recess 43 is formed in the dispenser body 12
Although the engaging protrusion 44 is formed on the sealing collar 42, the engaging recess may be formed on the dispenser body and the engaging protrusion may be formed on the sealing collar.

The bottle cap 20 and the sealing collar 42 configured as described above are
It is assembled in the lower half portion 16 of the dispenser body as follows.

First, bottle cap on the lower half 16 of the dispenser body
When the bottle cap 20 is pressed, the base portion 30 of the bottle cap is guided by the inclined surface 38 of the second locking portion of the locking member, and the lower end of the lower half portion is compressed, so that the space between the first and second locking portions is reduced. It enters and is incorporated into the dispenser body 12. Bottle cap base 30
When is inserted between the first and second locking portions, the lower end of the lower half portion 16 returns to its original shape by elasticity. Here, the upward movement of the base portion 30 of the bottle cap is hindered by the first locking portion 34. Also, since the lower end of the lower half has returned to its original shape,
The downward movement of the bottle cap base 30 is impeded by the horizontal surface 39 of the second stop. In particular, since the horizontal surface 39 extends substantially parallel to the lower surface of the bottle cap base, the downward separation of the bottle cap is prevented, and the horizontal surface functions as a stopper. In this way, the bottle cap 20
Is incorporated in the lower half 16 of the dispenser body.

The sealing collar 42 is then pushed into the lower half 16 of the dispenser body within the bottle cap 20. Then, the engaging protrusion 44 at the upper end of the sealing collar is engaged with the engaging recess 43 at the lower half of the dispenser body. By the engagement of the engagement recess 43 and the engagement protrusion 44, the sealing collar 42 is assembled into the dispenser body 12 without dropping.

In this way, bottle cap 20, sealing color
42 is incorporated into the dispenser body 12, and even before the bottle cap is screwed into the container mouth portion 19, the bottle cap and the sealing collar are incorporated into the dispenser body 12 and integrated.

Although the bottle cap 20 and the sealing collar 42 are incorporated into the dispenser body 12, the actual incorporation is performed at the same time as the integral piston 24, trigger 26, and cylinder 22 are incorporated, as will be described later.

As can be seen clearly from FIG. 4 in addition to FIG. 1, the cylinder 22 is formed by defining a pump chamber 56 inside and integrally forming a small diameter portion 58 at a lower end portion, and an inflow passage 60 is formed. It is provided in the small diameter part. A valve seat 62 is formed in the small diameter portion 58 of the cylinder, and a primary valve 64 made of steel balls is housed in the small diameter portion of the cylinder. Also, suction tube 66
Are fitted into the small diameter portion 58 of the cylinder and extend into the container 18. The suction tube 66 may be integrally formed with the cylinder 22. The reference numeral 68 is an upward primary valve 64.
It shows the valve retainer that prevents the release of.

As can be seen from FIGS. 1, 5, and 6, a pair of engagement pieces 68 extend from the rear surface of the oliger 26 so that they can engage with the step portion 70 of the cylinder. Therefore, in FIG. 1, when the trigger 28 is pulled and swings in the direction of the arrow, the cylinder 22
The piston is linked to the trigger from the initial position shown.
Moved vertically upwards along 24. Then, when the pulling force of the trigger 26 is removed, the trigger and the cylinder 22 are both returned to the initial position by the biasing force of the return spring described later. The sealing collar 42 is the small diameter part of the cylinder.
58 is provided with a small-diameter guide portion 71 that is loosely fitted, and the cylinder 22 is guided by this guide portion and reciprocates without shaking.

As shown in FIG. 1, the cylinder 22 has an open upper end, and the main body (piston main body) 72 of the piston 24 extends from the open end.
Extends into the cylinder. Then, the skirt-shaped lip seal 74 slidingly contacting the inner circumference of the cylinder 22 is
Is integrally molded at the lower end of. Further, a return spring, for example, a compression coil spring 76 is arranged in the cylinder 22,
The upper end is in contact with the stepped portion 72 of the piston body 72.

An annular engagement piece 78 formed in a reverse hook shape is formed at the upper end of the cylinder and extends outward. Then, as described later, the engagement piece engages with the corresponding hook-shaped support piece of the piston 24, so that the cylinder 22 is supported by the piston at its initial position.

As shown in FIGS. 7 to 9 in addition to FIG. 1, the piston 24 is a piston main body for guiding the reciprocating motion of the cylinder.
In addition to 72, it is formed in a substantially L-shape having a housing 79 extending substantially horizontally. Further, an outflow passage 80 communicating with an orifice of a nozzle cap described later is formed in the housing 79. In addition, a connecting passage 82 that connects the outflow passage 80 to the pump chamber 56 is formed in the piston body 72.

As is apparent from FIG. 1, the piston main body 72 is molded separately from the housing 79. Then, the piston main body 72 is assembled into the housing by being fitted into the fitting tubular portion 84 integrally formed at the rear end of the housing 79. A valve seat 86 is integrally formed on the upper end of the piston main body 72, and a secondary valve 88 made of a steel ball is arranged on the upper end of the piston main body, and the outflow passage 80 and the connecting flow passage 82 are provided.
The communication between them is cut off.

An engagement cylinder part 90 coaxial with the fitting cylinder part 84 extends upward from the upper edge of the rear part of the housing 79. In addition, the support cylinder portion 92 extends downward from the rear portion of the housing 79 coaxially with the piston body 72. The left portion of the support tube portion 92 is largely cut out (8th
), A hook-shaped engaging piece 94 is formed at the lower end of the inner wall of the support tubular portion (see FIGS. 1 and 9). The engagement piece 94 is
Instead of being formed entirely around the lower end of the inner wall of the support tubular portion 92,
It is divided and molded, and in the example, it is divided into three pieces. In the configuration in which the engaging piece 94 is divided and formed in this manner,
By inserting the insert through the hole 96 formed in the upper edge of the support tube portion, the molding can be easily performed.

A pair of depending pieces 98 are formed in the center of the housing, and the connection between the depending pieces 98 is missing at the lower end so that elasticity occurs at the lower end of the depending pieces. Then, outward from the lower end of the hanging piece 98,
A pair of engagement pins 99 extend respectively, and these engagement pins function as pivot points of the trigger 26. That is, a corresponding pair of engaging recesses 100 are provided so as to face the inner wall of the engaging piece 68 of the trigger (see FIGS. 5 and 6). Here, the interval L1 (see FIG. 6) between the engaging recesses 100 is equal to the engaging pin 9
It is formed to be slightly smaller than the height L2 of 9 (see FIG. 9). In such a configuration, the trigger engagement recess 10
When 0 is pushed into the housing 79 from below while being aligned with the engagement pin 99 of the housing, the elasticity of the lower end of the hanging piece causes the engagement pin to be held in the engagement recess and fitted into the housing. Therefore, the trigger 26 is pivotally supported by the housing 79 so as to be swingable, and does not easily fall from the housing. Note that, contrary to the embodiment, the engagement pin 99 may be provided in the trigger 26 and the corresponding engagement recess 100 may be provided in the housing 79.

Further, as shown in FIG. 7 and FIG.
Extends from the top edge of the housing 79. Then, the distal end portion 104 of the dispenser body is formed to have a narrow width so that the engaging piece 102 of the housing is fitted (see FIG. 2). Further, a corresponding engaging cylinder portion 106 that can be fitted with the engaging cylinder portion 90 of the housing hangs down from the upper edge 14a of the dispenser body (see FIG. 1). In such a configuration, when the engaging cylinders 90, 106 are aligned and the housing 72 is pushed into the dispenser body 12 from below, the engaging cylinder 90 is in the engaging cylinder 106 and the engaging piece 102 is in the dispenser. The tips 104 of the main body are respectively fitted. Therefore, the housing 79 is incorporated into the dispenser body 12 as shown in FIG. In particular, in the structure in which the front half and the rear half are respectively supported in this manner, the housing 79 is reliably assembled into the dispenser body 12 without play.

Further, a large-diameter male screw portion 108 is formed in front of the engaging piece 102 (FIGS. 7 and 8), and a bottomed cylindrical nozzle cap 110 is screwed onto this male screw portion. Further, a spinner 112, which turns the pressurized liquid flowing in the outflow passage 80 into a vortex to form a spray flow, is interposed between the front end of the housing 79 and the nozzle cap 110. A flow passage 114 communicating with the outflow passage 80 is formed on the peripheral surface of the rear portion of the spinner, and the rear portion of the spinner is fitted to the front end of the housing. An orifice 116 is provided at the center of the housing of the nozzle cap 110. And the nozzle cap 11
The pressurized liquid is discharged as a spray flow or a jet flow by advancing and retracting 0 to bring the entire surface of the spinner into contact with or away from the bottom of the nozzle cap.

Ventilation means should be provided to prevent the formation of liquid locks in the container 18. Therefore, as shown in FIG. 1, the step portion 118 of the sealing collar 42 and the step portion 120 of the small diameter portion of the cylinder are chamfered so as to be in close contact with each other, and these step portions constitute a ventilation means. According to the ventilation means having such a configuration, reliable airtightness is ensured with a simple configuration. When the cylinder 22 is lifted from the initial position due to the swing of the trigger 28, the steps 118 and 120 are separated from each other. The small diameter portion 58 of the cylinder is loosely fitted in the small diameter guide portion 71 of the sealing collar, and naturally there is a gap between them. Therefore, it goes without saying that if the stepped portions 118 and 120 separate from each other, the inside of the container 18 communicates with the outside air and the outside air flows into the container to prevent the occurrence of liquid lock. Assembling the trigger type dispenser 10 including the above-mentioned components can be easily performed in several steps as follows.

(1) First, the inner element built in the dispenser body 12, that is, the piston 24, the trigger 26, the cylinder 22, and the like are integrated in advance. Therefore, as shown in FIG. 10, with reference to the piston 24, the cylinder 22, the primary valve 64, the return spring 76, the piston body 72, the secondary valve 88,
It is arranged coaxially from below on the vertical axis 126 of the piston in this order. When the cylinder 22 is pushed into the piston 24, the cylinder, the primary valve 64, the return spring 76, the piston main body 72, and the secondary valve 88 are simultaneously assembled in the piston.
Specifically, the secondary valve 88 is housed in the upper end of the piston body 72, and the cylinder is pushed into the piston housing 79 and assembled with the primary valve 64, the return spring 76, and the piston body housed in the cylinder. . When the cylinder 22 is pushed into the piston 24, the engagement piece 94 of the piston support cylinder portion
Is pressed by the engaging piece 78 of the cylinder and escapes outward in the radial direction, and after passing through the engaging piece 78, returns to its original shape by elasticity,
The engagement pieces 78 and 94 are engaged. Then, the cylinder 22 is supported by the piston 24 by the engagement of the engagement pieces 78 and 94, and is held at its initial position against the biasing force of the return spring 76. Although the engaging pieces 78, 94 are formed in a reverse hook shape or a hook shape in the embodiment, the engaging pieces 78, 94 are not limited to such a shape, and a shape capable of supporting the cylinder 22 at the initial position without being disengaged. If

Further, by aligning the engagement recess 100 of the engagement piece of the trigger with the engagement pin 99 of the piston and pushing the trigger 26 into the piston from below to engage the engagement pin and the engagement piece 68, the trigger is obtained. Is swingably attached to the piston.

Further, the nozzle cap 110 is coaxially arranged with the spinner 112 interposed on the horizontal axis 128 of the piston. Then, when the nozzle cap is screwed onto the male screw portion 108 and is advanced, the spinner is fitted to the tip of the piston, and the nozzle cap and the spinner are incorporated in the piston.

It is not necessary to perform vertical assembling of the cylinder or the like based on the piston 24, attachment of the trigger 26, and horizontal assembling of the nozzle cap or the like in the above-mentioned order, and the order may be changed appropriately. There is no end.

For convenience of explanation, the piston 22, the cylinder 22, the trigger 26,
Inner element assembly (assembly) 124 with nozzle cap 110 etc. incorporated and integrated
Will be called.

(2) Then, as shown in FIG. 11, with the dispenser body 12 as a reference, the assembly 124, the bottle cap 20, and the sealing collar 42 are arranged coaxially with the lower half portion 16 of the dispenser body. Then, if the ceiling collar 42 located at the lowermost position is pressed upward, the locking means 32 of the lower half of the dispenser body is fitted and locked to the bottle cap 20 as described above, and the bottle cap is assembled to the assembly 124. Together with this, it is incorporated into the dispenser body 12. Further, the engaging protrusion 44 of the sealing collar is engaged with the engaging recess 43 at the lower end of the lower half portion, and the sealing collar is also incorporated in the dispenser body 12. Then, the dispenser 10 as a finished product is provided. Of course, the dispenser main body 12 may be lowered, and the bottle cap 20 and the sealing collar 42 may be pressed through the assembly 124 to be incorporated therein.

As described above, in the present invention, the cylinder 22 and the piston 24 are
Is formed separately from the dispenser body 12, and an inflow passage 60 is provided in the cylinder and an outflow passage 80 is provided in the piston 24. That is, the dispenser body 12 does not have the inflow passage 60 and the outflow passage 80, but only has the vertically extending lower half portion 16. Therefore, the dispenser body 12 is structurally simplified and the injection time in injection molding is shortened. Further, the outflow passage 80 intersecting the axis of the lower half portion 16 is not formed in the dispenser body 12. Therefore, the dispenser body 12 can be injection-molded only by moving the movable mold without using the core pin for the outflow passage 80. Therefore, it is not necessary to consider the moving direction of the core pin, three or more rows of cavities can be arranged in series in the fixed mold, and the space of the fixed mold can be effectively used. For example, as shown in FIG. 12, in the known configuration, the two cavities 202 for the dispenser body in the Y-axis direction are not provided in the fixed mold 204. As shown in FIG. 5, for example, two more rows of cavities 202 can be set in the Y-axis direction. Therefore, the number of moldings of the dispenser body 12 for each injection cycle is doubled.

The structure of the cavity 202 for the body of the dispenser is simplified and the injection time is shortened. Further, since the core pin for molding the outflow passage is not used, the moving time of the core pin becomes unnecessary. Therefore, the injection cycle is shortened.

As described above, the structure of the dispenser body is simplified, the number of moldings for each injection cycle is increased, and the injection cycle is shortened. Therefore, the dispenser body can be mass-produced.

In the embodiment, the piston 24 is fixedly incorporated in the dispenser body 12, and the cylinder 22 is configured to move in association with the trigger 26. But the dispenser body
For mass production of 12, the cylinder 22 and the piston 24 are molded separately from the dispenser body 12, and the inflow passage 60,
It is sufficient if the outflow passage 80 is provided in each of the cylinder and the piston. Therefore, contrary to the embodiment, the cylinder may be fixedly incorporated in the dispenser body, the piston may be reciprocated in conjunction with the trigger, and the inflow passage may be provided in the piston and the outflow passage may be provided in the cylinder.

Also, the piston 24 built in the dispenser body 12,
The cylinder 22 and the trigger 26 are arranged coaxially in the horizontal direction or the vertical direction with respect to the piston, and are easily integrated by being pushed in, and do not separate even if left as they are. In addition to the integrated assembly 124,
When the bottle cap 20 and the sealing collar 42 are coaxially arranged and pushed into the dispenser body 12, the dispenser 10 as a finished product is obtained.

As described above, for mass production by molding, either the cylinder movable type or the piston movable type may be used. However, regarding the assembling of the dispenser 10, it is necessary to support the movable body in the initial position, and therefore, it is necessary to configure the cylinder movable type as in the embodiment.

If you arrange it coaxially and just push it in, the piston 24,
Cylinder 22 and trigger 26 are integrated, easy to assemble,
It can be done quickly. Further, since the inner element such as the piston 24 is previously integrated as the assembly 124, the dispenser body 12, the assembly, the bottle cap 20, and the sealing collar 42 are coaxially arranged in this order and simply pushed in to complete the dispenser 10. To do. Therefore, the assembly process of the dispenser 10 is greatly simplified, and quick and easy assembly is possible.

In particular, the engagement of the engagement pieces 78, 94 supports the cylinder 22 on the piston 24 and prevents the cylinder from being disengaged from the piston. Therefore, the assembly 124 can be stored and transported while being integrated. Where the bottle cap 2
0, the molding process of the sealing collar 42 is not difficult due to its shape, and as described above, the dispenser body 12
Is not difficult to mold. Furthermore, the assembly of the sealing body 42 of the dispenser body 12 and the bottle cap 20 and the assembly 124 is coaxially arranged so that the dispenser body can be lowered or the sealing collar 42 can be raised and pushed in. Not difficult to. As described above, there is no difficulty in molding the dispenser body 12, the bottle cap 20, and the sealing collar 42, and since the assembly of these and the assembly 124 can be easily performed, the molding and assembling of these are technically performed. It can be easily performed even in the reverse ground. On the other hand, as described above, since the assembly 124 can be conveyed while being integrated, there is no difficulty in supplying the assembly. Therefore, in the central factory, the assembly
The so-called knockdown system is possible in which 124 is made in advance and is supplied to another factory and is incorporated into the dispenser body 12 together with the bottle cap 20 and the sealing collar 42. In the knockdown method of production, the dispenser 10 can be mass-produced without seriously affecting the quality of employees. Therefore, in Japan, even in a factory in a depopulated area where skilled workers are difficult to secure, the dispenser 10 can be easily mass-produced, and local hiring can be sufficiently secured. It also makes it possible to expand overseas. Furthermore, the assembly 124
The dispenser 10 of various designs and types can be provided by changing the. For example, if foaming means such as a sponge or a barrier is provided on the nozzle cap 110, a dispenser of a former type can be obtained. Therefore, by managing the assembly 124 produced at the central factory and supplied to other factories, the management of production plans, design changes, etc. can be easily controlled from a global perspective.

The above-mentioned embodiments are intended to explain the present invention, and are not intended to limit the present invention at all, and all modifications and alterations made within the technical scope of the present invention are also included in the present invention. Needless to say.

〔The invention's effect〕

As described above, according to the present invention, the dispenser body has neither an inflow path nor an outflow path, and the orthogonal axis is not formed in the dispenser body. Therefore, the dispenser body is structurally simplified, and the core pin is unnecessary in the molding process. Therefore, the number of moldings for each injection cycle is increased, the injection cycle is shortened, and the dispenser body can be mass-produced. In addition, mass production of the dispenser body allows the dispenser to be manufactured at low cost.

Further, inner elements such as pistons, cylinders, triggers, etc. built in the dispenser body can be easily integrated, and can be stored and transported as they are without being separated. Since the inter-elements are integrated in advance and supplied as the inner element assembly, the inner element assembly, the dispenser body, the bottle cap, and the sealing collar can be easily assembled, and the dispenser as a finished product can be easily produced.

As described above, in the present invention, the inner elements such as the piston, the cylinder, and the trigger can be supplied integrally without being separated. Therefore, it becomes possible to produce a dispenser by producing and supplying an inner element assembly including a piston and the like at a central factory and incorporating it into a dispenser body, a nozzle cap, and a sealing collar prepared locally. Therefore, the present invention enables the production of the dispenser by the knockdown method, which is difficult with the known configuration.

In such knockdown system production, dispensers of various designs and types can be provided by changing the inner element assembly produced at the central factory and supplied to other plants. Also, by managing the inner element assembly, it is possible to easily control the management of production plans and design changes from a global perspective.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a manual trigger type dispenser according to the present invention, FIG. 2 is a perspective view of a dispenser body, and FIG. 3 is one of the dispenser bodies fitted and locked in a bottle cap. FIG. 4 is a longitudinal sectional view of the cylinder, FIG. 5 and FIG. 6 are side and rear views of the trigger, and FIGS. 7 to 9 are side views of the housing of the piston. FIG. 10 is a plan view and a front view, FIG. 10 is an exploded view of an inner element assembly, FIG. 11 is an exploded view of a dispenser, and FIG. 12 is a schematic plan view of a fixed mold. 10: Manual trigger type dispenser, 12: Dispenser body, 14, 16: Upper half and lower half of dispenser body, 18: Container, 19: Container mouth, 20: Bottle cap, 22:
Cylinder, 24: Piston, 26: Trigger, 28: Notch, 30:
Base of bottle cap, 32: locking means, 34, 36: first and second locking portions, 38, 39: slope of second locking portion, horizontal surface, 42:
Sealing collar, 72: piston body, 78: cylinder engagement piece, 79: piston housing, 84: fitting cylinder portion, 90: engagement cylinder portion, 92: support cylinder portion, 94: piston engagement piece, 110: nozzle cap, 112: spinner, 124: inner element assembly (assembly).

Claims (8)

[Claims] 1. A bottle cap is attached to a container mouth, and liquid is sucked up from the container into an inside of a pump chamber of the cylinder through an inflow path by a swing of a trigger to be pressurized and pressurized. In a manual trigger-type dispenser in which liquid flows out through an outflow passage that is almost orthogonal to the inflow passage, a piston that is molded separately from the dispenser body and has a valve seat for the secondary valve is the upper half of the dispenser body. A cylinder that is fixedly attached to the dispenser and is molded separately from the dispenser body and has a valve seat for the primary valve engages the trigger and can reciprocate along the piston in conjunction with the swing of the trigger. And an inflow passage is provided in the cylinder and an outflow passage is provided in the piston to allow passage of the rear end of the trigger engaging with the cylinder and the piston. A notch is provided in the dispenser body, and using the elasticity generated by the presence of the notch, locking means for fitting and locking the dispenser body with the bottle cap is provided in the lower half of the dispenser body, A manual trigger type dispenser, wherein a piston is formed so as to engage with the cylinder and support the cylinder in its initial position. 2. A piston, which is clamped in an upper half of a dispenser body and has an outflow passage formed therein,
It is configured in a substantially L-shape including a housing and a piston body that is molded separately and guides the reciprocating movement of the cylinder. The housing of the piston is provided with a support cylinder portion arranged outside the cylinder, and An extended locking piece is formed on the upper end of the cylinder, and is locked to this outer locking piece to support the cylinder in the initial position.An inwardly extended locking piece is formed on the lower end of the support cylinder. The manual trigger type dispenser according to claim 1. 3. A notch is provided in the support cylinder portion, and
The manual trigger type dispenser according to claim 2, wherein the engagement piece at the lower end of the support cylinder is divided and molded. 4. A second locking means for locking the base portion of the bottle cap between the first locking member and the first locking member provided below the first locking member. The manual trigger type dispenser according to any one of claims 1 to 3, further comprising a locking portion. 5. The first locking portion has an inclined surface for guiding the insertion of the base of the bottle cap, and a horizontal surface extending substantially parallel to the lower surface of the bottle cap base to prevent the bottle cap from being detached from the dispenser body. 5. The manual trigger type dispenser according to claim 4, which is formed by having. 6. The manual trigger type dispenser according to claim 1, wherein the sealing collar is housed in the bottle cap so as to be engageable with the lower end of the lower half of the dispenser body. . 7. The manual trigger type dispenser according to claim 6, wherein the cylinder and the sealing collar are respectively provided with shoulders which are tightly adhered to each other to establish a liquid-tight state when the cylinder is in the initial position. . 8. A nozzle cap is attached to the tip of a piston containing a secondary valve via a spinner, a trigger is pivotally supported by the piston, and a cylinder is a primary valve.
It is assembled so that it will not separate from the piston via a return spring, and the piston, nozzle cap, cylinder, and trigger are integrated in advance to form an assembly, and then the assembly such as the piston is sandwiched between the dispenser body and the assembly. , The bottle cap and the sealing collar are respectively arranged on the other side, the bottle cap and the sealing collar are pressed relative to the dispenser body, and the bottle cap is attached to the lower end of the dispenser body.
A manual trigger type dispenser manufacturing method that fits and locks the sealing collar, and incorporates the bottle cap and sealing collar into the dispenser body together with the assembly such as the piston.