JPH0668330U - Electrical connector - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide an electrical connector that prevents damage to a metal cover for protecting a contact and that is smaller than conventional ones. A first housing 40 having a recess 41 formed on a fitting surface and a second housing 50 housed in the recess 41 with a gap between the inner wall and the inner wall of the recess 41 are provided. The contacts 60 arranged on the electrical connector include
A contact portion 61 with which the mating contact 81 contacts, a connection portion 62 connected to the circuit board 10, and a coupling portion 63 that elastically couples the contact portion 61 and the connection portion 62 are formed. It is fixed to the housing 50, and the connecting portion 62 is fixed to the first housing 40.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electrical connector.

[0002]

[Prior art]

 In recent years, in order to prevent the car audio device mounted on an automobile from being stolen, the car audio device is divided into a main body part provided with a tape drive part and an operation panel part provided with various switches. A type in which the main body is attached to a car rack, the operation panel is fitted into the recess formed in this rack to electrically connect to the main body, and the operation panel can be removed and carried when necessary. Car audio devices are known. The main body and the operation panel are each provided with an electrical connector in which contacts are arranged. The operation panel is fitted into the recess formed in the rack, and the contact between the main body and the operation panel is made. The main body and the operation panel are electrically connected to each other by making contact with each other.

Further, when the operation panel section is removed from the recess of the rack, some of the contacts of the electrical connector of the main body are exposed, so the electrical connector of the main body has a metal cover for protecting this contact. Is attached. This metal cover is movable and has a window through which contacts are exposed.When the removed operation panel is fitted into the above-mentioned recess, the metal cover is pushed in the fitting direction by the electrical connector of the operation panel. Then, the contacts of the main body and the operation panel come into contact with each other. When the operation panel is removed from the recess of the rack, the metal cover moves to the front surface of the contact of the main body to protect the contact (Japanese Utility Model Laid-Open No. 2-146497 and Japanese Utility Model Laid-Open No. 10985). (See the official gazette).

Further, the inner diameter of the recess into which the operation panel portion is fitted is slightly larger than the outer dimension of the operation panel portion, so that the operation panel portion can be easily fitted into this recess portion. It is configured. Since the inner diameter of the recess is larger than the outer dimension of the operation panel, when the operation panel is fitted into this recess, the operation panel may shift with respect to the main unit. As a result, the electrical connector of the operation panel The contact position between the contact and the contact of the electrical connector of the main unit may be displaced from the proper contact position. In order to absorb this misalignment, the electric connector of the main body is provided with two housings, and a recess is formed in the mating surface of one housing, and this recess has a gap between it and the inner wall of this recess. Then, the other housing is fitted and the other housing is moved in the fitting / removing direction and in a direction intersecting with the fitting / releasing direction to absorb the deviation. 4-370 bulletin).

[0005]

[Problems to be solved by the device]

 In the above-mentioned electrical connector with a metal cover attached, since the metal cover is movable, the user may pry open the metal cover unnecessarily, which may damage the metal cover or prevent the contact protected by the metal cover. There is a risk of contact. When a hand touches a contact, static electricity may destroy the circuit connected to this contact.

[0006] Furthermore, the above-described electrical connector including the two housings is provided with a locking portion for preventing the two housings from coming off from each other, and the electrical connector has an amount corresponding to this locking portion. The dimensions are large. In view of the above circumstances, the present invention provides an electrical connector that prevents the metal cover from being damaged by prying open the metal cover, prevents the user from easily touching the contact, and enables downsizing. The purpose is to do.

[0007]

[Means for Solving the Problems]

 The electrical connector of the present invention for achieving the above object includes: (1) a first housing having a recess formed in a fitting surface; (2) fitting into the recess with a gap between the inner wall and the inner wall of the recess. (3) A contact part fixed to the second housing and in contact with the mating contact, a connection part fixed to the first housing, which is connected to the board, and the contact part and the connection. (4) The second housing, fixed to the first housing, covers the fitting surface of the housing 1 and covers a part of the recess. It is characterized in that it is provided with a metal cover for preventing it from coming out of the recess.

[0008]

[Action]

 In the electrical connector of the present invention, since the metal cover is fixed to the first housing, the user cannot pry open the metal cover, which prevents the metal cover from being damaged. Also, since the metal cover cannot be opened by prying, the user cannot easily contact the contact, and the destruction of the circuit to which the contact is connected is prevented.

In addition, the metal cover covers a part of the recess formed in the fitting surface, which prevents the second housing from slipping out of the recess. Therefore, it is not necessary to form a locking portion or the like for preventing the second housing from slipping out of the concave portion in the first and second housings, so that the electrical connector can be downsized.

[0010]

【Example】

 An embodiment of the electrical connector of the present invention will be described with reference to the drawings. Here, an example will be described in which the electrical connector of the present invention is attached to a circuit board of a main body portion of a car audio device in which a tape drive portion and the like are provided. The electrical connector of this embodiment will be described with reference to FIGS. 1, 2, and 3.

FIG. 1 shows a state in which the electrical connector of the present embodiment mounted on the circuit board of the main body and the electrical connector mounted on the circuit board of the operation panel provided with various switches and the like are fitted to each other. FIG. 2 is a view taken along the line AA of FIG. 1 when the electric connector of the operation panel is detached, and FIG. 3 is a view taken along the line BB of FIG. The car audio device is composed of a main body (not shown) provided with a tape drive unit and the like, and an operation panel unit (not shown) provided with various switches and the like. The operation panel section is fixed to the main body section by being fitted in a recess formed in this rack. This electrical connection is made by fitting the electric connectors 30 and 80 attached to the circuit board 10 of the main body and the circuit board 20 of the operation panel, respectively.

The electric connector 30 attached to the circuit board 10 of the main body portion includes a first housing 40 having a recess 41 formed on a fitting surface, and a second housing 50 fitted in the recess 41. The second housing 50 has a gap with the inner wall of the recess 41. A large number of ridges 41a are formed on the inner wall of the recess 41, and the contact surface when the second housing 50 contacts the inner wall is reduced to reduce the friction when the second housing 50 slides on the inner wall. is doing. A contact 60 is arranged inside the electric connector 30, and a contact portion 61 with which a contact 81 on the other side contacts, a connection portion 62 connected to the circuit board 10, and a contact 60 are arranged in the contact 60. A connecting portion 63 is formed by elastically connecting the contact portion 61 and the connecting portion 62. A barb (projection) 61a is formed on the contact portion 61, and the contact portion 61 is fixed to the second housing 50 and extends in the fitting direction. A barb 62a is also formed on the connecting portion 62, and the connecting portion 62 is fixed to the first housing 40 and soldered to the circuit board 10.

A protrusion 71 (see FIG. 3) is formed on both side surfaces in the longitudinal direction of the first housing 40, and a latch 72 formed on the metal cover 70 is locked to the protrusion to allow the metal to move. The cover 70 is fixed to the first housing 40. The metal cover 70 covers the fitting surface of the first housing 40 and a part of the recess 41 to prevent the second housing 50 from coming out of the recess 41, and the user can easily contact the contact 60. This contact 60 is protected by preventing it from contacting with. Since the conventional metal cover is movable, as described above, the user may open or close the metal cover, which may damage the metal cover or touch the contacts protected by the metal cover. In addition, if the contact is touched with a hand, the circuit to which the contact is connected may be destroyed. However, this metal cover 70 is fixed to the first housing 40, and the opening thereof is extremely narrow (in this embodiment, it is a rectangular opening having a length of about 2 cm and a width of about 6 mm). The person cannot move the metal cover 70, and since the surface of the metal cover 70 is positioned so as to project from the contact portion 61, the contact 60 cannot be touched. In addition, as described above, since the metal cover 70 also functions as a stopper for preventing the second housing 50 from coming off, it is not necessary to separately form a retaining portion or the like for preventing the stopper from coming off, and therefore, the electrical connector can be used. Can be miniaturized. Fixing plates 42 for fixing the first housing 40 to the circuit board 10 are provided at both longitudinal ends of the electric connector 30.

Next, the operation panel section and the electric connector attached to the circuit board of the operation panel section will be described. FIG. 4 is a view taken along the line CC of FIG. 1 when the electric connector of the main body is detached from the electric connector shown in FIG. 1, and FIG. 5 is a view taken along the line D-D of FIG. The operation panel unit includes a housing (not shown), and the circuit board of the operation panel unit is formed so that the electric connector 80 projects outward from the opening formed in the wall 21 of the housing. It is attached to 20. The electrical connector 80 is of a conventionally known type, and includes a contact 81 that makes electrical contact with the contact 60 of the electrical connector 30 and a housing 82 in which the contacts 81 are arranged.

The operation panel unit is fitted into a recess formed in the rack, and is fixed to the recess by a latch claw. The inner diameter of the recess is slightly larger than the size of the operation panel section, so that the operation panel section can be easily fitted. Since the inner diameter of the recess is larger than the size of the operation panel, when the operation panel is installed in this recess, the operation panel may shift from the main unit, and as a result, the electrical connector of the operation panel may The position of the contact and the contact of the electrical connector of the main body part may shift from each other. However, in the electrical connector 30, as described above, the second housing 50 is accommodated in the recess 41 with a gap between the second housing 50 and the inner wall of the recess 41, and the contact portion is formed by the coupling portion 63 of the contact 60. Since 61 and the connecting portion 62 are elastically coupled to each other, they can be moved in a direction intersecting with the fitting / removing direction, and the positional deviation when fitting the electrical connector 30 and the electrical connector 80 is absorbed.

[0016]

[Effect of device]

 As described above, according to the electrical connector of the present invention, since the metal cover is fixed to the first housing, the user cannot easily open and close the metal cover, which prevents damage to the metal cover due to opening and closing. It In addition, since the metal cover cannot be easily opened and closed, the user cannot easily contact the contact and the circuit board connected to the contact is prevented from being destroyed. Furthermore, since the metal cover prevents the second housing from slipping out of the recess, the first and second housings do not need a locking portion or the like to prevent the second housing from slipping out of the recess. Can be made smaller.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which an electric connector attached to a circuit board of a main body section and an electric connector attached to a circuit board of an operation panel section are fitted to each other.

FIG. 2 is a view taken along the line AA of FIG. 1 when the electric connector of the operation panel unit is detached.

3 is a BB arrow view of FIG. 2. FIG.

FIG. 4 is a view taken along the line C-C in FIG. 1 when the electric connector of the main body is detached.

FIG. 5 is a view on arrow D-D of FIG. 4.

[Explanation of symbols]

 30, 80 Electric connector 40 First housing 41 Recessed portion 50 Second housing 60 Contact 61 Contact portion 62 Connection portion 63 Coupling portion 70 Metal cover

Claims (1)

[Scope of utility model registration request] 1. A first housing having a recess formed in a fitting surface, a second housing fitted in the recess with a gap between the recess and an inner wall of the recess, and fixed to the second housing. A contact portion that comes into contact with the mating contact, a connection portion that is fixed to the first housing and that is connected to the substrate, and a contact portion that elastically connects the contact portion and the connection portion to each other. A metal cover that covers the fitting surface of the first housing and partially covers the recess, and is fixed to the first housing to prevent the second housing from coming out of the recess. And electrical connector.