CN220384667U - Gear-shifting folding chair - Google Patents

Abstract

The utility model discloses a gear shifting folding chair which comprises a front foot support frame, a rear foot support frame, a chair surface frame, a chair back frame and two armrests, wherein the two bottom ends of a chair back frame are respectively hinged with the two sides of the rear end of the chair surface frame, the middle parts of the two sides of the rear foot support frame are respectively hinged with the outer sides of the two bottom ends of the chair back frame, the middle parts of the two sides of the front foot support frame are respectively hinged with the middle parts of the two sides of the chair surface frame, the rear ends of the two armrests are respectively hinged with the middle parts of the two sides of the chair back frame, the bottoms of the armrests are provided with gear pieces, a plurality of mutually communicated gear holes are formed in the gear pieces, the two top ends of the front foot support frame are respectively hinged with connecting pieces, one sides of the two connecting pieces far away from the front foot support frame are respectively fixedly arranged at the two top ends of the rear foot support frame, limiting hinge shafts are arranged on the connecting pieces, the limiting hinge shafts are penetratingly clamped in the gear holes, and the positions of the limiting hinge shafts in the different gear holes are adjusted through operation to adjust the angles between the chair surface frame and the chair back frame.

Description

Gear-shifting folding chair

Technical Field

The utility model relates to the technical field of folding chairs, in particular to a gear-shifting folding chair.

Background

With camping and the like, the external activities are rising, and the market of the external supplies of the users is greatly expanded. The folding chair has various forms, saves space due to the folding function, is convenient to store and carry, and is deeply favored by people. However, most existing folding chairs also have the defects of complex structure, inconvenient folding, unadjustable or difficult adjustment of the backrest angle and the like, thereby affecting the convenience and comfort of use of users. The common folding chair has an elastic folding chair with a vibration function as disclosed in the patent publication No. CN213882526U, and has a backrest angle adjusting function, but has a complex structure and high cost; there is also a folding chair as disclosed in CN212938916U, which solves the problems of complex folding structure and inconvenient folding, but the backrest angle cannot be adjusted, and the volume after folding is still larger, and the cost is also higher.

Disclosure of Invention

The utility model aims to provide a gear shifting folding chair so as to solve the technical problems.

In order to achieve the above purpose, the technical scheme of the utility model is that the gear shifting folding chair comprises a front foot supporting frame, a rear foot supporting frame, a seat frame, a chair back frame and two armrests, wherein the two bottom ends of the chair back frame are respectively hinged with first hinges, the two first hinges are respectively fixedly connected with two sides of the rear end of the seat frame, the middle parts of the two sides of the rear foot supporting frame are respectively hinged with second hinges, the two second hinges are respectively hinged with the outer sides of the two bottom ends of the chair back frame, the middle parts of the two sides of the front foot supporting frame are respectively hinged with the middle parts of the two sides of the seat frame, the rear ends of the two armrests are respectively hinged with the middle parts of the two sides of the chair back frame, the bottom of each armrests is provided with a gear piece, a plurality of mutually communicated gear holes are formed in the gear piece, one sides of the front foot supporting frame far away from the front foot is respectively fixedly arranged at the two top ends of the rear foot supporting frame, a limiting hinge shaft is arranged on the connecting piece, the limiting hinge shaft penetrates and is clamped in the gear holes, and the position adjusting position of the limiting hinge shaft in the different gear holes to adjust the angle of the seat frame between the seat back frame and the gear frame.

Preferably, the connecting piece is hollow triangle, and spacing articulated shaft sets up in the apex angle outside of connecting piece, and the base angle outside that the connecting piece is close to rear foot support frame one end is provided with fixed articulated shaft, fixedly connected with shift protection piece between spacing articulated shaft and the fixed articulated shaft.

Preferably, the seat frame comprises a seat tube and a front supporting tube, wherein the seat tube is in a U shape with a front opening, and two ends of the front supporting tube are respectively and fixedly connected with two front ends of the seat tube.

Preferably, the first iron pieces are respectively riveted and fixed at the lower sides of the two front ends of the seat tube, the first plastic pieces are respectively fixedly arranged at the two ends of the front supporting tube, and the first plastic pieces are rotatably arranged on the first iron pieces.

Preferably, the inner sides of the two front ends of the seat tube are provided with first mounting holes, the two ends of the front supporting tube are respectively fixedly provided with a first plastic piece, and the first plastic pieces are rotatably arranged in the first mounting holes.

Preferably, the back frame is U-shaped with a downward opening and comprises two back support pipes and a rear support pipe, wherein two ends of the rear support pipe are respectively and fixedly connected with the upper ends of the two back support pipes.

Preferably, the rear sides of the upper ends of the two backrest pipes are respectively riveted and fixed with a second iron piece, two ends of the rear supporting pipe are respectively fixedly provided with a second plastic piece, and the second plastic pieces are rotatably arranged on the second iron pieces.

Preferably, the inner sides of the upper ends of the two backrest pipes are provided with second mounting holes, and the two ends of the rear supporting pipe are respectively fixedly provided with a second plastic part which is rotatably arranged in the second mounting holes.

Preferably, the rear foot support frame is U-shaped, and reinforcing ribs are respectively arranged on two sides of the bottom of the rear foot support frame.

Preferably, the bicycle further comprises a crosspiece tube, wherein two ends of the crosspiece tube are fixedly connected to two sides of the middle part of the front foot support frame.

The utility model has the following beneficial effects:

the front leg support frame, the rear leg support frame, the seat frame and the chair back frame are arranged in a connecting structure, so that the folded volume of the gear shifting folding chair is smaller, the folded height is lower, the folding chair is convenient to store and transport, the folding structure is simpler, the cost is lower, the folding operation is faster and more convenient, and the angle between the seat frame and the chair back frame is adjusted by adjusting the positions of the limiting hinge shafts in different gear holes through operation, thereby facilitating a user to adjust the angle of the backrest according to own habit, being leaned on the adjustment folding chair, being convenient for adjusting the angle of the backrest, improving the convenience and comfort of use of the user and meeting various demands of the user.

Drawings

Fig. 1 is a perspective view of embodiment 1 of the present utility model in an expanded state;

FIG. 2 is a side view of embodiment 1 of the present utility model in an expanded state;

FIG. 3 is a schematic view of embodiment 1 of the present utility model in a semi-folded state;

FIG. 4 is a schematic view of embodiment 1 of the present utility model in a folded state;

FIG. 5 is a schematic view showing a part of the structure of embodiment 1 of the present utility model;

FIG. 6 is a schematic view of the structure of a forefoot support frame of embodiment 1 of the present utility model;

fig. 7 is a schematic structural view of a rear foot supporting frame according to embodiment 1 of the present utility model;

fig. 8 is a schematic view of the structure of the handrail of embodiment 1 of the present utility model;

FIG. 9 is a schematic view showing the structure of a gear member according to embodiment 1 of the present utility model;

FIG. 10 is an exploded view of embodiment 1 of the present utility model;

fig. 11 is a perspective view of embodiment 2 of the present utility model in an expanded state;

fig. 12 is an exploded view of embodiment 2 of the present utility model.

The drawings are marked: the bicycle comprises a front foot supporting frame, a rear foot supporting frame, a 3 seat tube, a 4 front supporting tube, a 5 backrest tube, a 6 rear supporting tube, a 7 handrail, an 8-gear piece, a 81-gear hole, a 9 first hinge, a 10 second hinge, a 11 connecting piece, a 12 limiting hinge shaft, a 13 fixed hinge shaft, a 14 gear shift protecting piece, a 15 first iron piece, a 16 first plastic piece, a 17 second iron piece, a 18 second plastic piece, 19 reinforcing ribs, a 20 crosspiece tube, a 21 first mounting hole and a 22 second mounting hole.

Detailed Description

For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1.

Referring to fig. 1-10, as an embodiment of the present utility model, a shift folding chair is provided, which comprises a front foot support 1, a rear foot support 2, a seat frame, a back frame and two armrests 7, wherein the two bottom ends of the back frame are respectively hinged with a first hinge 9, the two first hinges 9 are respectively fixedly connected with two sides of the rear end of the seat frame, the middle parts of the two sides of the rear foot support 2 are respectively hinged with a second hinge 10, the two second hinges 10 are respectively hinged with the outer sides of the two bottom ends of the back frame, the middle parts of the two sides of the front foot support 1 are respectively hinged with the middle parts of the two sides of the seat frame, the rear ends of the two armrests 7 are respectively hinged with the middle parts of the two sides of the back frame, the bottom parts of the armrests 7 are provided with a plurality of blocking parts 8, the two top ends of the front foot support 1 are respectively hinged with a connecting piece 11, one side of the two connecting pieces 11, which is far away from the front foot support 1, is respectively fixedly arranged at the two top ends of the rear foot support 2, the connecting piece 11 is provided with a limiting hinge shaft 12, the limiting hinge shaft 12 is respectively clamped with the middle parts of the two bottom ends of the back support 2, the limiting hinge shaft 12 is arranged in the back frame, and the position of the back frame is adjusted to have different angles between the two blocking shafts 81 and the back positions through the two blocking positions 81.

According to the technical scheme, when the folding chair is folded, the chair seat frame and the chair back frame are only required to be mutually close to each other to rotate and finally tend to be attached, meanwhile, the chair seat frame drives the armrest 7 to rotate upwards, so that the angle between the armrest 7 and the chair back frame is reduced, and the front foot support frame 1 and the rear foot support frame 2 are driven to be mutually close to each other to rotate and fold, so that the folding process of the folding chair is completed.

In this embodiment, the connecting piece 11 is the triangle-shaped of hollow structure, and spacing articulated shaft 12 sets up in the apex angle outside of connecting piece 11, and the base angle outside that connecting piece 11 is close to rear foot support frame 2 one end is provided with fixed articulated shaft 13, fixedly connected with fender guard 14 between spacing articulated shaft 12 and the fixed articulated shaft 13 to prevent that spacing articulated shaft 12 from breaking away from and keeping off position hole 81, guarantee the adjustment reliability of taking the angle and the security that the user took.

Specifically, three gear holes 81 are respectively provided at the front, middle and rear positions of the gear member 8 in sequence, and in the unfolded state, the more the position of the limiting hinge shaft 12 engaged with the gear hole 81 is located at the rear position, the more the angle between the seat frame and the chair back frame is close to 90 degrees, the more the position of the limiting hinge shaft 12 engaged with the gear hole 81 engaged with the gear hole is located at the front position, the more the angle between the seat frame and the chair back frame is close to 180 degrees, and the sitting posture angle can be specifically adjusted according to the user requirement.

In this embodiment, the armrest 7 is a wooden armrest, but other armrests, such as a bamboo armrest, may be used.

In this embodiment, the seat frame includes sitting tube 3 and preceding stay tube 4, sitting tube 3 is the U-shaped that the opening was forward, the both ends of preceding stay tube 4 are fixed connection respectively at two front ends of sitting tube 3, specifically, two front end downside of sitting tube 3 are riveted respectively and are fixed with first ironware 15, form the hole of stepping down between the front end downside of first ironware 15 and sitting tube 3, the both ends of preceding stay tube 4 are fixed respectively and are provided with first plastic piece 16, first plastic piece 16 rotates the hole of stepping down that sets up at first ironware 15 to the both ends rotation setting of preceding stay tube 4 is at two front end downside of sitting tube 3.

In this embodiment, the back frame is in a U shape with a downward opening, and includes two back support pipes 5 and a rear support pipe 6, where two ends of the rear support pipe 6 are respectively and fixedly connected to the upper ends of the two back support pipes 5.

In this embodiment, the second iron pieces 17 are respectively riveted and fixed on the rear sides of the upper ends of the two backrest pipes 5, a yielding hole is formed between the second iron pieces 17 and the rear sides of the upper ends of the backrest pipes 5, the second plastic pieces 18 are respectively fixedly arranged at the two ends of the rear support pipe 6, and the second plastic pieces 18 are rotatably arranged in the yielding holes of the second iron pieces 17, so that the two ends of the rear support pipe 6 are rotatably arranged at the rear sides of the upper ends of the two backrest pipes 5.

As shown in fig. 10, the first plastic part 16 and the second plastic part 18 are plastic plugs having the same structure, and the first iron part 15 and the second iron part 17 are iron parts each having the same structure with a central concave surface.

In this embodiment, the rear foot supporting frame 2 is U-shaped, and the corners at two sides of the bottom of the rear foot supporting frame are respectively provided with reinforcing ribs 19 to prevent the rear foot supporting frame 2 from deforming, thereby improving the supporting stability of the rear foot supporting frame 2.

In this embodiment, the rail tube 20 is further included, and two ends of the rail tube are fixedly connected to two sides of the middle part of the forefoot support frame 1, so that the forefoot support frame 1 is prevented from being deformed, and thus the support stability of the forefoot support frame 1 is improved.

In this embodiment, the middle part of the front support tube 4 is concavely curved toward the lower side, and the middle part of the rear support tube 6 is concavely curved toward the rear side, so that the comfort level of the legs and the back of the user during riding can be improved.

In this embodiment, the first hinge 9 is a U-shaped iron member, which is fixedly disposed at two sides of the rear end of the seat tube 3, and the lower ends of the two backrest tubes 5 are hinged to the two U-shaped iron members 21, so as to improve the connection strength; the second hinge 10 comprises two opposite long strips, and two ends between the two long strips are provided with rotating shafts respectively used for being connected with the middle part of the rear foot supporting frame 2 and the bottom end of the backrest tube 5 in a rotating way.

The use process of the embodiment is as follows:

when folding, only need be close to each other with seat frame and back of the chair frame and rotate, tend to laminating at last, the seat frame drives handrail 7 simultaneously and upwards rotates for angle between handrail 7 and the back of the chair frame diminishes, and drives front foot support frame 1, back foot support frame 2 to be close to each other and rotate folding, thereby accomplish folding chair's folding process.

When the folding chair is unfolded, the chair seat frame and the chair back frame are only required to be mutually far away from each other to rotate, and finally the folding chair is unfolded to be at an angle, and meanwhile, the chair seat frame drives the armrests 7 to rotate downwards, so that the angle between the armrests 7 and the chair back frame is enlarged, and the front foot support frame 1 and the rear foot support frame 2 are driven to be mutually far away from each other to be unfolded to be at a certain angle, and the unfolding process of the folding chair is completed.

Embodiment 2 for the sake of brevity, this embodiment mainly describes differences from embodiment 1.

Referring to fig. 11 and 12, as an embodiment of the present utility model, there is provided a shift folding chair, wherein first mounting holes 21 are formed on inner sides of two front ends of a seat tube 3, first plastic pieces 16 are fixedly provided at both ends of a front support tube 4, and the first plastic pieces 16 are rotatably provided in the first mounting holes 21; the second mounting holes 22 are formed in the inner sides of the upper ends of the two backrest tubes 5, the second plastic parts 18 are fixedly arranged at the two ends of the rear supporting tube 6 respectively, the second plastic parts 18 are rotatably arranged in the second mounting holes 22, the parts of the arrangement structure are fewer, the cost is further reduced, the seat tube 3 and the front supporting tube 4 as well as the backrest tubes 5 and the rear supporting tube 6 are more nearly in the same plane, and the riding comfort of a user is further improved.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. A shift folding chair, which is characterized in that: including front foot support frame, back foot support frame, the seat frame, back of the chair frame and two armrests, two bottoms of back of the chair frame are articulated respectively has first hinge, two first hinges respectively with the both sides fixed connection of seat frame rear end, the middle part of back foot support frame both sides is articulated respectively has the second hinge, two second hinges respectively with the outside of two bottoms of back of the chair frame articulated, the well upper portion of front foot support frame both sides is articulated with the middle part of seat frame both sides respectively, the rear end of two armrests is articulated with the both sides middle part of back of the chair frame respectively, the handrail bottom is provided with the fender position piece, a plurality of fender position holes that communicate each other have been seted up on the fender position piece, two tops of front foot support frame are articulated respectively has the connecting piece, one side that the front foot support frame was kept away from is fixed respectively to be set up on two tops of back of the foot support frame, be provided with spacing articulated shaft on the connecting piece, spacing articulated shaft runs through the card and is established in fender position hole, adjust the position of spacing articulated shaft in different fender position holes in order to adjust the angle between seat frame and the frame.

2. The shift folding chair according to claim 1, wherein: the connecting piece is hollow structure's triangle-shaped, and spacing articulated shaft sets up in the apex angle outside of connecting piece, and the base angle outside that the connecting piece is close to rear foot support frame one end is provided with fixed articulated shaft, fixedly connected with between spacing articulated shaft and the fixed articulated shaft and adjusts the fender protection piece.

3. The shift folding chair according to claim 1, wherein: the seat frame comprises a seat tube and a front supporting tube, wherein the seat tube is in a U shape with a front opening, and two ends of the front supporting tube are respectively and fixedly connected with two front ends of the seat tube.

4. A shift folding chair according to claim 3, characterized in that: the lower sides of the two front ends of the seat pipe are respectively riveted and fixed with a first iron piece, the two ends of the front supporting pipe are respectively fixedly provided with a first plastic piece, and the first plastic piece is rotationally arranged on the first iron piece.

5. A shift folding chair according to claim 3, characterized in that: the inner sides of the two front ends of the seat tube are provided with first mounting holes, the two ends of the front supporting tube are respectively fixedly provided with a first plastic part, and the first plastic parts are rotatably arranged in the first mounting holes.

6. The shift folding chair according to claim 1, wherein: the chair back frame is U-shaped with downward openings and comprises two back support pipes and a rear support pipe, wherein two ends of the rear support pipe are respectively and fixedly connected with the upper ends of the two back support pipes.

7. The shift folding chair according to claim 6, wherein: the rear sides of the upper ends of the two backrest pipes are respectively riveted and fixed with a second iron piece, two ends of the rear supporting pipe are respectively fixedly provided with a second plastic piece, and the second plastic pieces are rotatably arranged on the second iron pieces.

8. The shift folding chair according to claim 6, wherein: the inner sides of the upper ends of the two backrest pipes are provided with second mounting holes, and the two ends of the rear supporting pipe are respectively fixedly provided with a second plastic part which is rotatably arranged in the second mounting holes.

9. The shift folding chair according to claim 1, wherein: the rear foot supporting frame is U-shaped, and reinforcing ribs are respectively arranged on two sides of the bottom of the rear foot supporting frame.

10. The shift folding chair according to claim 1, wherein: the bicycle further comprises a crosspiece tube, wherein two ends of the crosspiece tube are fixedly connected to two sides of the middle part of the front foot support frame.