JP5820738B2 - Terminal connection structure - Google Patents

Description

  The present invention relates to a terminal connection structure in which a first contact portion of a first terminal and a second contact portion of a second terminal are contacted by sliding.

  There exists a thing disclosed by patent document 1 as this kind of terminal connection structure. This contact connection structure has a male terminal 50 and a female terminal 60 as shown in FIGS. The male terminal 50 is formed from a conductive member. The male terminal 50 has a tab portion 51. The female terminal 60 is formed by pressing a conductive member. The female terminal 60 has a box frame body 61 whose front is opened. On the upper surface side in the box frame 61, an elastic arm portion 62 is provided by bending. The elastic arm part 62 is provided with a contact part 63 that is bent downward and is bent. On the lower surface portion 61a of the box frame 61, contact piece portions 64 are provided at two locations by bending.

  4A, when the tab portion 51 of the male terminal 50 is inserted into the box frame body 61 of the female terminal 60, the distal end side of the tab portion 51 of the male terminal 50 is connected to the elastic arm portion 62 and the box frame body. It contacts the lower surface portion 61a of 61 or the contact piece portion 64. When an insertion force is further applied to the male terminal 50 from this state, the elastic arm portion 62 is bent and deformed, and the insertion of the tab portion 51 of the male terminal 50 is allowed. The male terminal 50 is inserted in the back while the tab part 51 slides on the contact part 63 and the contact piece part 64 of the female terminal 60, respectively. Then, as shown in FIG. 4B, when the male terminal 50 is inserted to the contact completion position, the terminal connection work is completed.

JP 2002-63961 A

  By the way, the surface of the male terminal 50 and the female terminal 60 is subjected to tin (Sn) plating from the viewpoint of corrosion resistance and the like. As described above, at the time of terminal connection work, the contact portion 63 of the female terminal 60 having a spot shape is always slid with respect to the tab portion 51 of the male terminal 50 in the entire section from the contact start position to the contact completion position. Therefore, there is a high possibility that the tin plating of the contact portion 63 of the female terminal 60 is peeled off. The peeled tin-plated wear powder is oxidized by a heat load or the like. When the oxidized wear powder is present at the contact point, it causes an increase in resistance and there is a problem that durability is lowered.

  Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a terminal connection structure that can prevent a decrease in durability caused by metal-plated wear powder.

  The present invention includes a first terminal having a first contact portion projecting from a first contact base portion, and a second terminal having a second contact portion projecting from the second contact base portion, The first contact base portion and the second contact base portion are moved relative to each other in an overlapping direction, and at the movement completion position, the first contact base portion and the second contact base portion are elastically deformed by the elastic deformation force of at least one of the first contact base portion and the second contact base portion. A terminal connection structure in which one contact portion and the second contact portion are in contact with each other, and at least one of the first contact base portion and the second contact base portion includes the first contact portion or the second contact portion. The first contact portion and the second contact point are disposed at a position forward of the contact portion and at a position shifted in a direction orthogonal to the moving direction with respect to the first contact portion and the second contact portion. Protective protrusion with higher protrusion height than the part A terminal connecting structure that parts are provided.

  It is preferable that the protective protrusion is provided on the left and right positions of the first contact portion and the second contact portion.

  According to the present invention, in the section where the first contact base part of the first terminal and the second contact base part of the second terminal overlap, the protective protrusion is formed except for the section where the first contact part and the second contact part overlap. The first contact portion and the second contact portion do not slide by sliding on the first contact base portion or the second contact base portion, and only in a section where both the first contact portion and the second contact portion overlap each other. Slide. Therefore, the sliding section of the first contact portion and the sliding section of the second contact portion are both smaller than in the conventional example, and metal plating can be prevented from being scraped. Accordingly, it is possible to prevent a decrease in durability caused by metal plating wear powder.

1 shows an embodiment of the present invention, in which (a) is a perspective view of a main part when the first contact part side of the first terminal is seen, and a perspective view of a main part when the second contact part side of the second terminal is shown in (b). It is. 1A shows an embodiment of the present invention, and FIG. 3A is a perspective view showing a state before the first contact base portion and the second contact base portion are overlapped in the terminal connection operation of the first terminal and the second terminal, FIG. Is a perspective view showing a state where the first contact base portion and the second contact base portion overlap each other in the terminal connection work of the first terminal and the second terminal, and (c) is a terminal connection work of the first terminal and the second terminal, It is a perspective view in which the 1st contact part and the 2nd contact part show a contact completion state. 1 shows an embodiment of the present invention, (a) is a terminal connection work of a first terminal and a second terminal, a side view showing a state where the first contact base part and the second contact base part overlap, (b) is a first view. It is a side view which shows the contact completion state of a 1st contact part and a 2nd contact part by the terminal connection operation | work of 1 terminal and 2nd terminal. A conventional example is shown, (a) is a sectional view showing a state before starting contact in a terminal connection process of a male terminal and a female terminal, (b) is a terminal connection operation of a male and a female terminal, It is a side view in which 2 contact parts show a contact completion state.

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

(One embodiment)
1 to 3 show an embodiment of the present invention. A connector device to which a terminal connection structure according to the present invention is applied includes a first connector (not shown) and a second connector (not shown). The first connector has a first connector housing (not shown) and a first terminal 1 fixed in the first connector housing. The second connector has a second connector housing (not shown) and a second terminal 10 fixed in the second connector housing. The first connector housing and the second connector housing are configured to be capable of connector fitting with each other. In the connector fitting state, the first terminal 1 and the second terminal 10 are brought into contact with each other by the elastic deformation force. Hereinafter, detailed configurations of the first terminal 1 and the second terminal 10 will be described.

  As shown to Fig.1 (a), the 1st terminal 1 is formed with an electroconductive member, and the tin (Sn) plating is given to the surface. The first terminal 1 has a plate-shaped first contact base portion 2, and a single first contact portion 3 and a pair of protective protrusions 4 are provided on the mating contact surface side of the first contact base portion 2. Each is protruding. The first contact portion 3 has a spot shape.

  The pair of protective protrusions 4 are arranged at a position ahead of the connector contact direction (movement direction) A with respect to the first contact part 3. The pair of protective protrusions 4 are arranged at the left and right positions shifted in the direction perpendicular to the connector fitting direction (movement direction) A with respect to the first contact part 3. The protrusion height H (shown in FIG. 3 (a)) of the pair of protective protrusions 4 is the protrusion height h1 (shown in FIG. 3 (a)) of the first contact part 3 and the second contact part described below. 12 is set higher than the protrusion height h2 (shown in FIG. 3A). However, the pair of protection projections 4 is lower than the total height (h1 + h2) of the projection height h1 of the first contact portion 3 and the projection height h2 of the second contact portion.

  As shown in FIG. 1B, the second terminal 10 is formed of a conductive member, and the surface thereof is tin (Sn) plated. The second terminal 10 has a plate-like second contact base portion 11, and a single second contact portion 12 is projected from the mating contact surface side of the second contact base portion 11. The second contact portion 12 has an elongated shape extending in the fitting direction (movement direction) A.

  In the above configuration, the connector fitting operation will be described. In order to fit the first connector and the second connector, for example, the first connector is moved toward the second connector. Then, as shown in FIG. 2A, the first terminal 1 gradually approaches the second terminal 10. When the first contact base portion 2 of the first terminal 1 reaches a position where it overlaps the second contact base portion 11 of the second terminal 10, the first terminal 1 and the second terminal 10 are deformed by bending deformation of at least one of the first terminal 1 and the second terminal 10. An elastic deformation force in a direction in which the first contact base portion 2 and the second contact base portion 11 are in close contact with each other acts.

  In the movement after the position where the first contact base portion 2 of the first terminal 1 overlaps with the second contact base portion 11 of the second terminal 10 due to this elastic deformation force, the movement shown in FIGS. As shown, the pair of protective protrusions 4 of the first terminal 1 slide on the second contact base portion 11 of the second terminal 10. Here, even if the second contact portion 12 is located on the first contact base portion 2 or the first contact portion 3 is located on the second contact base portion 11, Since the protruding height H is higher than the protruding heights h2 and h1 of the second contact portion 12 and the first contact portion 3, the second contact portion 12 is on the first contact base portion 2 or the first contact portion 3 is It does not slide on the second contact base portion 11.

  When the fitting of the first connector and the second connector proceeds and the first contact portion 3 moves to a position reaching the second contact portion 12, the first contact portion 3 slides on the second contact portion 12 for the first time. Then, as shown in FIGS. 2C and 3B, when the first contact portion 3 is moved to the fitting completion position of the first connector and the second connector, the first contact portion 3 is substantially at the center position of the second contact portion 12 ( The first contact portion 3 and the second contact portion 12 are brought into contact with each other by an elastic deformation force. Thus, the first terminal 1 and the second terminal 10 are electrically connected.

  As described above, when the connector is fitted, the first contact base portion 2 and the second contact point are in the section where the first contact base portion 2 of the first terminal 1 and the second contact base portion 11 of the second terminal 10 overlap. Except for the section where the portions 12 overlap, the protective protrusion 4 slides on the second contact base portion 11 so that the first contact portion 3 and the second contact portion 12 do not slide, and the first contact portion 3 and the first contact portion 3 The two contact portions 12 slide on each other only in the overlapping section. Therefore, the sliding section of the first contact portion 3 and the sliding section of the second contact portion 12 are both smaller than in the conventional example, and the tin plating is not scraped. In particular, the spot-shaped first contact portion 3 always slides at the same location in the entire section from the contact start position to the contact completion position with respect to the second contact portion 12, but because the slide section is short. No peeling of tin plating occurs. Even when the connectors are separated from each other, the first contact portion 3 and the second contact portion 12 slide relative to each other only in the section where both overlap. Therefore, the peeled tin-plated wear powder is oxidized by a thermal load or the like, and the oxidized wear powder does not intervene at the contact point between the first contact portion 3 and the second contact portion 12. From the above, it is possible to prevent a decrease in durability caused by tin-plated wear powder.

  For the reason described above, since the wear of the first contact portion 3 and the second contact portion 12 can be prevented as much as possible, the plating thickness can be reduced and the cost can be reduced.

  Since the protective projections 4 are provided in a pair on the outer side of the first contact part 3, even if the first contact base part 2 and the second contact base part 11 are inclined for some reason, the first contact part 3 and the second contact part 3 are provided. It is possible to reliably prevent the sliding of the contact portion 12 other than the overlapping section.

(Modification)
In the above embodiment, the protective projection 4 is provided on the first terminal 1 side, but the protective projection 4 may be provided on the second terminal 10 side. Moreover, you may provide the protection projection part 4 in both the 1st terminal 1 side and the 2nd terminal 10 side.

  In the above embodiment, tin (Sn) plating is applied to the surfaces of the first terminal 1 and the second terminal 10. Tin plating is preferable from the viewpoints of corrosion resistance, conductivity, connection reliability, solderability, economy, and the like, but it goes without saying that metal plating other than tin plating may be applied.

  In the first terminal 1 and the second terminal 10 of the above embodiment, the form of the first contact base part 2 and the second contact base part 11 is an example, depending on the form of the first terminal 1 and the second terminal 10. Various forms are possible. Various forms of the first contact part 3 and the second contact part 12 are conceivable as well. Of course, the terminal connection structure of the present invention can be applied to the male terminal and the female terminal of the conventional example.

DESCRIPTION OF SYMBOLS 1 1st terminal 2 1st contact base part 3 1st contact part 4 Protection protrusion part 10 2nd terminal 11 2nd contact base part 12 2nd contact part

Claims (2)

A first terminal having a first contact portion projecting from the first contact base portion; and a second terminal having a second contact portion projecting from the second contact base portion; And the second contact base portion are moved relative to each other in an overlapping direction, and at the movement completion position, at least one of the first contact base portion and the second contact base portion is elastically deformed with the first contact portion. A terminal connection structure with which the second contact portion is contacted,
At least one of the first contact base part and the second contact base part is located at a position forward of the first contact part or the second contact part, and the first contact part and the second contact part. The terminal connection structure is provided with a protective protrusion that is disposed at a position shifted in a direction perpendicular to the moving direction with respect to the contact portion and that has a protruding height higher than that of the first contact portion and the second contact portion. . The terminal connection structure according to claim 1,
The terminal connection structure according to claim 1, wherein the protective protrusion is provided at a right and left position of the first contact portion and the second contact portion.

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