JPH0633324U - Equipment with built-in contacts - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a device with a built-in contact that allows the terminal plate to be appropriately temporarily fixed to the board and facilitates soldering work. [Structure] When a terminal plate 30 for electrically connecting a contact device 11 built in a body 10 and a substrate 40 is inserted into an insertion hole 41 of the substrate, the inner surface of the terminal plate 30 is elastic so as to be bent inward. Two deformable engaging pieces 33,33 and an intermediate portion of the engaging pieces 33,33
It has a narrow connecting piece 34 for connecting the engaging pieces 33, 33 so that the amount of bending of the 33a, 33a is maximized.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device with a built-in contact such as a small electromagnetic contactor.

[0002]

[Prior art]

 As conventional devices with a built-in contact, there are those shown in FIGS. 4 to 6. This is composed of a body 10 having a built-in contact device 11, a cover 20 that closes the opening of the body 10, and a terminal plate 30 of a multiple number that electrically connects the contact device 11 and an external substrate 40. Has been done.

As shown in FIG. 5, the body 10 has a built-in contact device 11 having a fixed contact 31 of a terminal plate 30 described later and a movable contact 12 facing the fixed contact 31. Further, as shown in FIGS. 4 and 5, the cover 20 that closes the opening of the body 10 has a plurality of through holes 21 through which a plurality of terminal plates 30 are projected, and the terminal plates 30 are locked. It has a locking portion 23 for locking. The terminal plate 30 has a fixed contact 31 facing the movable contact 12 built in the body 10, and a connecting portion 37 protruding from the body 10 and the cover 20 and electrically connected to the substrate 40. The connecting portion 37 includes a cutout portion 38 cut out from the center of the tip and engaging pieces 39, 39 forming the cutout portion 38. In the vicinity of the fixed contact 31, a locked portion 36 that is locked by the locking portion 23 of the cover 20 is provided.

To attach the device with built-in contacts to the board 40, insert both engaging pieces 39, 39 of the connection portion 37 into the insertion holes of the board 40 until the bottom surface of the cutout portion 38 of the connection portion 37 comes into contact with the board 40. Then, in this state, soldering is performed from the upper surface of the substrate 40.

[0005]

[Problems to be solved by the device]

 The device with built-in contact described above, when both engaging pieces of the connection part are inserted into the insertion hole of the board, keeps a temporary fixed state because there is a gap between the insertion hole of the board, that is, temporary fixing. I can't. Also, if the terminal plate is temporarily fixed to the board with a smaller diameter of the insertion hole, both engagement pieces will plastically deform if the amount of bending is too large, and plastic deformation will not occur if the amount of bending is small. On the contrary, the force of the direction to get out of the substrate is applied.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a device with a built-in contact in which a terminal plate can be appropriately temporarily fixed to a substrate, thereby facilitating soldering work. To do.

[0007]

[Means for Solving the Problems]

 The device with a built-in contact of the present invention projects from the body and the cover to electrically connect the body containing the contact device, the cover closing the opening of the body, and the contact device to the external board. In a device with a built-in contact provided with a plurality of terminal plates, the terminal plate, when inserted into an insertion hole of a board, has two engaging pieces that can elastically deform so as to be bent inward at an inner surface thereof. It is configured to have a narrow connecting piece that connects the engaging pieces so that the bending amount of the middle portion of the engaging pieces is maximized.

[0008]

[Action]

 According to the configuration of the present invention, when the terminal plate is inserted into the insertion hole of the board, first, the narrow connecting piece is slightly deformed in the plate thickness direction so that the connecting piece portion passes through the insertion hole of the board. After passing through the insertion hole of the board, this connecting piece bulges near the tips of the two engaging pieces, and the middle part of the engaging piece is bent by the insertion hole, so that the terminal board has an appropriate elasticity. It is held by force.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. The members having the same basic functions as those of the conventional example are designated by the same reference numerals.

That is, the device with a built-in contact is configured by electrically connecting the body 10 having the contact device 11 built therein, the cover 20 closing the opening of the body 10, the contact device 11 and the external substrate 40 (specifically, its conductive pattern). And a plurality of terminal plates 30 that are connected to each other.

As shown in FIG. 2, the body 10 contains a contact device 11 having a fixed contact 31 of a terminal board 30 described later and a movable contact 12 facing the fixed contact 31. Further, as shown in FIG. 3, a plurality of through holes 21 for projecting a plurality of terminal plates 30 and a through hole 21 provided in the longitudinal direction are provided on the outer surface of the cover 20 which closes the opening of the body 10. 2, and a locking portion 23 for locking the terminal plate 30, as shown in FIG.

The terminal plate 30 is formed by bending a thin metal plate, and is provided with a fixed contact 31 facing the movable contact point 12 on the side located inside the body 10 and from the body 10 and the cover 20. A connecting portion 32 is provided whose protruding side is electrically connected to an external substrate 40. When the connection portion 32 is inserted into the insertion hole 41 of the substrate 40, the two engagement pieces 33, 33 that can elastically deform so as to be bent inward on the inner surface thereof, and the engagement pieces 33, 33. And a narrow connecting piece 34 for connecting the engaging pieces 33, 33 from the tip of the. When this connecting portion 32 is inserted into the insertion hole 41 of the board 40, the amount of bending of the middle portion (the place where it abuts the insertion hole of the board) 33a of the engaging pieces 33, 33 is maximized. . Further, the terminal plate 30 has two claws 35, 35 for caulking and fixing to the body 10, and a locked portion 36 that is locked to the locking portion 23 of the cover 20. There is.

To attach the device with built-in contacts to the board 40, the connecting piece 34 of the terminal plate 30 is slightly deformed in the insertion hole 41 while the separating wall 22 formed on the cover 20 abuts the board 40. Insert 33,33. After that, soldering is performed from the upper surface of the conductive pattern of the substrate 40.

This one is provided with two engaging pieces 33, 33 and a narrow connecting piece 34 for connecting the engaging pieces 33, 33 from the tips of the engaging pieces 33, 33, and inserting the substrate 40. When the engaging piece 34 is inserted into the hole 41, after the portion of the engaging piece 34 has passed through the inserting hole 41, the two engaging pieces 33, 33 are bulged in the vicinity of their tips, and the intermediate portions 33a, 33a of the engaging pieces 33, 33 are separated. Since it is bent by the insertion hole 41, the terminal plate 30 is held with an appropriate elastic force.

The length of the connecting piece may be designed to be an appropriate length depending on the amount of deformation of the connecting piece when it is inserted into the insertion hole of the board and the force of stretching the vicinity of the tip of the engaging piece.

[0016]

[Effect of device]

 In the device with a built-in contact of the present invention, when the terminal plate is inserted into the insertion hole of the board, first, the narrow connecting piece is slightly deformed in the thickness direction so that the connecting piece part passes through the insertion hole of the board. After passing through the insertion hole, the connecting piece hangs up near the tips of the two engaging pieces, and the middle part of the engaging piece is bent by the inserting hole. As a result, the terminal board has an appropriate elastic force. Since it is held by the terminal board, the terminal board can be appropriately temporarily fixed to the board, which facilitates the soldering work.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of the one shown in FIG.

3 is a perspective view of that of FIG. 1. FIG.

FIG. 4 is a vertical sectional view showing a conventional example.

5 is a vertical cross-sectional view of that of FIG.

FIG. 6 is a perspective view of that of FIG.

[Explanation of symbols]

 10 Body 11 Contact device 12 Movable contact 20 Cover 30 Terminal plate 31 Fixed contact 32 Connection part 33 Engaging piece 33a Intermediate part of engaging piece 34 Coupling piece

Claims (1)

[Scope of utility model registration request] 1. A body including a contact device, a cover for closing an opening of the body, and a plurality of terminal boards protruding from the cover for electrically connecting the contact device and an external substrate. In the device with a built-in contact, the terminal plate, when inserted into the insertion hole of the substrate, has two engaging pieces that can elastically deform so as to be bent inward on the inner surface thereof, and an intermediate portion of the engaging pieces. A device with a built-in contact having a narrow connecting piece for connecting the engaging pieces so that the bending amount of the portion is maximized.