JPH019346Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a jack that can be easily grounded to the chassis.

Conventionally, in jacks that use a metal sleeve, the jack is attached to the chassis at the metal sleeve part, so the metal sleeve is automatically connected to the chassis, and by connecting the ground terminal to the metal sleeve, the chassis can be easily attached. I was able to ground it. However, recently, jacks in which the sleeve is integrally molded with the body have been increasingly used. In this case, unless special processing is done, the chassis will not be grounded when the jack is attached to the chassis.

This invention provides a jack that automatically grounds the chassis when attached to the chassis by attaching a relatively simple grounding fitting to the body from the outside.

Hereinafter, embodiments of the jack according to this invention will be described with reference to the drawings. Insulating rectangular parallelepiped body 1
A sleeve 12 is integrally formed and protrudes from the front surface 11a of 1. Screw 1 on the outer peripheral surface of sleeve 12
3 is formed. At least one contact piece (not shown) is accommodated in the body 11, and a terminal 14 of the contact piece projects downward from the bottom surface 11b of the body 11. On the bottom surface 11b of the body 11,
When the body 11 is attached to the wiring board 15, positioning projections 16 are arranged left and right, front and back, and are formed into four pieces. The end surface of the positioning protrusion 16 comes into contact with the wiring board 15 to determine the height position of the jack. The terminal 14 is inserted into a small hole in the wiring board 15 and connected to the wiring on the back surface of the wiring board 15. When the plug is inserted into and removed from the body 11 through the sleeve 12, the contact pieces within the body 11 are controlled.

A grounding fitting 17 is fitted to the front part of the body 11. The grounding metal fitting 17 is constructed by integrally forming a chassis contacting portion 18, a locking portion 19, and a grounding terminal 21. The chassis contact portion 18 is disposed on the front surface 11a of the body 11, and in this example has a flat plate shape that contacts almost the entire front surface 11a, and has an opening 22 formed in the center thereof through which the sleeve 12 is inserted.

The locking portion 19 is bent and extended rearward from the lower edge of the chassis contact portion 18 to be in contact with the bottom surface 11b of the body 11, and is locked to the positioning projection 16. That is, as shown in FIGS. 2 and 3, cut grooves 23 are formed at the front of the rear end of the locking part 19 in correspondence with the two protrusions 16, respectively, and the front end of the cut groove 23 is formed with a circular hole 23a. It has been done. The groove width of the cut groove 23 is made slightly smaller than the diameter of the protrusion 16. When the locking part 19 is brought into contact with the bottom surface 11b and moved rearward, the protrusion 16 is forced to pass through the cut groove 23, and when the chassis contact part 18 comes into contact with the front surface 11a of the body, the protrusion 16 is forced to pass through the groove 23.
6 is located in the circular hole 23a, and the locking portion 19 is locked to the body 11.

In this example, body engaging pieces 24 and 2 are integrated from the upper edge of the chassis contact portion 18 and the left and right side edges, respectively.
5 and 26 contact the upper surface, right and left side surfaces of the body 11, respectively, and are bent and extended rearward. The front part of the body 11 is fitted into a square cylinder formed by the body engaging pieces 24, 25, 26 and the locking part 19.

The ground terminal 21 extends downward integrally with the rear end of the lower edge of the body engaging piece 25. The chassis contact portion 18, the locking portion 19, the ground terminal 21, and the body engagement pieces 24, 25, and 26 can be made by pressing a single metal plate.

According to the jack of this configuration, when the sleeve 12 is inserted into the mounting hole of the chassis 27 as shown in FIG. The chassis contact portion 18 contacts the chassis 27, and the ground terminal 21 protrudes in the same direction as the terminal 14.
It is similarly inserted into the wiring board 15 and connected to the ground conductor of the wiring board 15. Therefore, when this jack is attached to the chassis 27, the chassis 2
7 is grounded. Moreover, the grounding metal fitting 17 can be easily made by press working, and the grounding metal fitting 17 can also be easily fitted into an existing jack.

In addition, as the locking part 19 of the grounding metal fitting 17, the fourth
Tongue 1 extending forward from the rear edge as shown in the figure
9a may be integrally formed, and the tongue piece 19a may be inclined downward so that the tongue piece 19a engages with a recessed portion of the bottom surface 11b of the body 11 to prevent it from coming off in the forward direction. Body engaging pieces 24, 25, 26
may be omitted; in that case, the ground terminal 21 may be formed integrally with the locking portion 19, for example. Further, the chassis contact portion 18 may be configured in the shape of an elastic claw so as to come into elastic contact with the chassis 27.

[Brief explanation of drawings]

Fig. 1 is a side view showing an example of the jack according to this invention, Fig. 2 is an exploded perspective view thereof, Fig. 3 is a bottom view of the grounding fitting 17, and Fig. 4 is another example of the grounding fitting 17. FIG. 11: Body, 12: Sleeve, 14: Terminal,
6: Positioning protrusion, 17: Grounding fitting, 18:
Chassis contact portion, 19: Locking portion, 21: Ground terminal.

Claims (1)

[Scope of utility model registration request] A sleeve is provided protruding from the front of the body,
A contact piece in the body is controlled by inserting and removing a plug into the body through the sleeve, and the terminal of the contact piece is attached to the front surface of the body in a jack in which the terminal of the contact piece protrudes outward from the bottom surface of the body. a chassis contacting part that is arranged and comes into contact with a chassis to which the body is attached; a locking part that is locked to the body when the body is fitted to the body;
A grounding fitting is provided which is integrally formed with the above-mentioned terminal and a grounding terminal that protrudes below the bottom surface of the above-mentioned body in parallel with the above-mentioned terminal, and the bottom surface of the above-mentioned body has a protrusion for positioning when mounting on a wiring board. is formed, and the locking portion is locked to the positioning projection, and the grounding metal fitting is attached to the body.