JPH0718367U - Electrical connection device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the contact tip from protruding and permanently deforming the contact. A housing 10 made of an insulating material, in which a contact holding space 11 having a terminal opening 12 on a side surface is formed,
The electrical connection device 1 is composed of the contact 20 made of an elastic conductive material and arranged in the contact holding space 11.
The contact 20 projects outward from the housing 10 and is fixedly held by the housing 10.
And the contact holding space 11 connected to the fixed end portion 21.
A U-shaped portion 22 which is bent and arranged in a U-shape, and a contact portion 23 which is connected to the U-shaped portion 22 and extends outward from the terminal opening 12 and is folded back into the contact holding space 11. , A free end portion 24 connected to the contact portion 23 and extending so as to overlap the U-shaped portion in the contact holding space 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to, for example, an electrical connection device that is connected to an electrode or the like of a battery that is detachably received.

[0002]

[Prior art]

 An example of such an electrical connecting device is shown in FIG. This electrical connecting device is configured by inserting and holding a contact 60 in a contact holding space 53 formed inside the housing 50. The contact 60 has a fixed end portion 61 that is protruded downward from a press-fitting hole 55 formed in the housing 50 and press-fitted and fixed, and a U-shaped portion 62 that is formed in an inverted U-shape in the contact holding space 53. The contact portion 63 is formed by projecting outward from the terminal opening 54 formed in the housing 50, and the tip 64 of the contact portion 63 is folded back into the terminal opening 54.

In this electrical connecting device, the electrode surface 81 of the battery 8 is pressed against the contact portion 63 protruding outward from the terminal opening 54, and the elastic force of the U-shaped portion 62 causes the contact portion 63 to move to the polar terminal surface. It is made to contact with 81. This electrical connecting device is attached to a printed circuit board 85, and the fixed end portion 61 of the contact 60 is connected to the power supply line of the printed circuit board 85. As a result, the battery 8 is connected to the power supply line of the printed circuit board 85 via the contact 60.

[0004]

[Problems to be solved by the device]

 In the electrical connecting device having such a configuration, the tip 64 of the contact portion 63 is a free end. Therefore, when the contact portion 63 is pulled outward for some reason, the tip 64 is shown in FIG. As shown in the figure, there is a problem that it may come out from the terminal opening 54. Then, if the battery 80 is pressed as it is, the contact portion 63 is pressed while the tip 64 is exposed to the outside, so that there is a problem that the contact portion 63 is deformed.

In the absence of such a problem, when the electrode surface 81 of the battery 80 is pressed against the contact portion 63, the electrode surface 81 of the contact portion 63 faces the electrode surface 81 according to the elastic deformation of the U-shaped portion 62. The contact point that moves moves downward in the figure. However, if the electrode surface 81 is dented or has a rough surface, the contact portion 63 of the contact portion 63 may not move and the battery 80 may be pressed while keeping contact with the same portion. . In this case, as shown in FIG. 8, when the contact portion 63 is pushed in by the battery 80, the bent portion 65 that connects the contact portion 63 and the U-shaped portion 62 is further bent, and this portion is permanently deformed. There is a problem.

The present invention has been made in view of such a problem, and has a structure in which the tip (free end) of the contact does not protrude to the outside of the housing and the permanent deformation of the contact can be prevented. An object is to provide an electrical connection device.

[0007]

[Means for Solving the Problems]

 In order to achieve such an object, in the present invention, a housing made of an insulating material in which a contact holding space having a terminal opening on a side surface is formed, and a contact made of an elastic conductive material arranged in the contact holding space. The electrical connection device is configured from the. The contact is fixed to the insulating housing and fixedly held by the insulating housing, and the contact is connected to the fixed end and is bent into a U-shape in the contact holding space. The U-shaped portion formed in the contact holding space, the contact portion connected to the U-shaped portion, extending outward from the terminal opening and folded back into the contact holding space, and connected to the contact portion in the contact holding space. It consists of a free end that extends over and over.

[0008]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the electrical connecting device 1 according to the present invention, as shown in FIG. 1, the electrode surface of the battery 80 is pressed and abuttingly connected to this electrode surface. The battery 80 has a plurality of electrode surfaces 81, and the electrical connection device 1 has a plurality of contacts 20 corresponding to the plurality of electrode surfaces 81.

As shown in FIG. 2, the electrical connecting device 1 holds a plurality of contacts 20 aligned in the width direction in a contact holding space 11 formed in a housing 10 made of an insulating material. It is formed. The housing 10 is divided into upper and lower parts, and these are combined to form a contact holding space 11 inside. A plurality of terminal openings 12 (same number as the contacts 20) are formed on the front surface of the housing 10, and a plurality of press-fit holes 13 (same number as the contacts 20) are formed on the rear lower surface of the contact holding space 11. . Also, several guide protrusions 15 are formed on the lower surface of the housing 10, and the guide protrusions 15 are press-fitted into the guide holes of the printed circuit board 85 so that the housing 10 is fixed to the printed circuit board 85. .

As shown in detail in FIG. 3, each contact 20 has a fixed end portion 21 that is press-fitted into the press-fitting hole 13 and projects downward from the lower surface of the housing 10, and is connected to the fixed end portion 21. A U-shaped portion 22 that extends upward and is bent and formed in an inverted U-shape, and is connected to the U-shaped portion 22 and is bent at the first bending portion 25 and extends forward to extend outward of the terminal opening 12. The contact portion 23 that protrudes to the upper side and is folded back upward to extend into the contact holding space 11, and the contact portion 23 that is connected to this contact portion and is bent at the second bending portion 26 to extend upward in the contact holding space 11. A free end portion 24 extending so as to overlap the letter-shaped portion 22 is formed integrally with a plate material made of an elastic conductive material.

A ridge 21 a for press-fitting and fixing is formed on the fixed end portion 21, and this portion is press-fitted into the press-fitting hole 13 and fixedly held in the housing 10. Further, the contact portion 23 is formed with a slit 28 extending in the longitudinal direction beyond the first and second bent portions 25 and 26 to the U-shaped portion 22 and the free end portion 24.

The electrical connecting device 1 having the above configuration is attached to the print substrate 85 by press-fitting the guide protrusions 15 into the guide holes. At this time, the fixed end portion 21 protruding downward from the lower surface of the housing 10 is press-fitted into the through hole of the printed circuit board 85 and connected to the power supply line on the printed circuit board 85.

In this manner, the battery 80 is attached to the printed circuit board 85 by pressing the electrode surface 81 against the contact portion 23 as shown in FIG. When the contact portion 23 is pushed by the electrode surface 81, the U-shaped portion 22 is elastically deformed and the contact portion 23 and the free end portion 24 are swung inward as shown by the arrow A. At the same time, the contact point 23a of the contact portion 23 with the electrode surface 81 moves in the direction of arrow B.

Here, if the electrode surface 81 with which the contact point 23a abuts has a dent or is rough from the surface of the electrode surface 81, the movement resistance of the contact point 23a in the direction of the arrow B increases. The force generated by this resistance acts to bend the first and second bent portions 25 and 26. Conversely, since this force is received by the first and second bent portions 25 and 26, even if the contact point 23a has a slightly large resistance to movement in the direction of arrow B, it is repelled and the first and second bent portions are repelled. The contact point 23a is moved in the direction of arrow B without being bent.

Then, finally, the battery 80 is pressed to the state shown in FIG. 5, and the contact portion 23 is pressed against the electrode surface 81 by the elastic force caused by the elastic deformation of the U-shaped portion 22, so that the both are surely held. Electrically connected. In this electrical connection device, the contact portion 23 of the contact 20 is bent inward from the terminal opening 12, and then is bent at the second bent portion 26 so as to extend upward in the contact holding space 11. Since the free end portion 24 is formed, the free end portion 24 hardly escapes outward from the terminal opening 12 even when the contact portion 23 receives a pulling force outward.

[0016]

As described above, according to the present invention, the contact disposed in the contact holding space of the housing has the fixed end portion protruding outward from the insulating housing and fixedly held, and the contact. A U-shaped part that is bent and arranged in a U-shape in the holding space, a contact part that extends outward from the terminal opening and is folded back into the contact holding space, and a U-shaped part in the contact holding space. Since it is composed of a free end part that extends so as to overlap the top part of the contact part, it is possible to prevent the free end part from coming out even if it is subjected to harmful force such as being pulled outward from the contact part. You can Also, when a battery or the like is pressed against the contact part, even if the contact resistance of the contact part becomes large due to the dent of the contact part, the contact resistance will be affected by the contact resistance on both sides of the contact part. Therefore, it is possible to prevent the contact from being permanently deformed by the movement resistance.

[Brief description of drawings]

FIG. 1 is a perspective view showing an electrical connection device according to the present invention and a battery connected thereto.

FIG. 2 is a cross-sectional view showing the electrical connecting device along arrow II-II.

FIG. 3 is a perspective view showing a contact that constitutes this electrical connection device.

FIG. 4 is a cross-sectional view showing the electric connecting device and a battery.

FIG. 5 is a cross-sectional view showing the electric connecting device and the battery.

FIG. 6 is a cross-sectional view showing a conventional electrical connecting device and a battery.

FIG. 7 is a cross-sectional view showing a conventional electrical connection device and a battery.

FIG. 8 is a cross-sectional view showing a conventional electrical connection device and a battery.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electrical connection device 10 Housing 11 Contact holding space 12 Terminal opening 20 Contact 22 U-shaped part 23 Contact part 80 Battery 85 Printed circuit board

Claims (1)

[Scope of utility model registration request] 1. A housing made of an insulating material, in which a contact holding space having a terminal opening on a side surface is formed, and a contact made of an elastic conductive material, arranged in the contact holding space. A fixed end portion fixedly held by the insulating housing and connected to the fixed end portion while projecting outward from the insulating housing, is inserted into the contact holding space.
A U-shaped portion that is bent and disposed in a U-shape, a contact portion that is connected to the U-shaped portion, extends outward from the terminal opening, and is folded back into the contact holding space; An electric connection device, comprising: a free end portion that is connected to and extends in the contact holding space so as to overlap the U-shaped portion.