JPH025505Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a jack that is electrically connected to a plug.

(Prior Art) In a jack in which a ground contact piece, a ring contact piece, and a tip contact piece are respectively inserted into the cavity of the body, the ground contact piece and the ring contact piece are
A contact portion formed at the tip thereof is arranged so as to be able to come into elastic contact with the plug inserted from the sleeve into the cavity from both sides.

(Problem to be solved by the invention) In this type of conventional jack, when the contact piece is placed in an unloaded state and the plug is inserted into the cavity from the sleeve, the contact piece is attached to the ground part and ring part of the plug. The contact parts of the contact parts interfere with each other, and each contact piece is elastically deformed in the width direction of the body, that is, in the thickness direction of each contact piece.
In this case, the elastic return force causes the contact portion to come into elastic contact with the plug.

In this way, with a configuration in which the contact piece placed under no load is elastically deformed and the resulting elastic return force causes the contact part to come into elastic contact with the circumferential surface of the plug, reliable electrical continuity cannot be achieved. In order to obtain an elastic return force large enough to bring the contact portion into elastic contact with the circumferential surface of the plug using the resulting contact pressure, a contact piece that is thick and wide is required.

The body into which such a thick and wide contact piece is incorporated has an increased width (in the thickness direction of the contact piece) and length (in the width direction of the contact piece), making it larger and smaller. This has become a problem that is contrary to the desired trend.

The present invention was made to improve the problems of the conventional technology, and although the contact piece is thin and narrow, the contact part can be connected to the circumferential surface of the plug with reliable electrical power. It is an object of the present invention to provide a jack which can be brought into elastic contact with a contact pressure that provides electrical conduction, thereby realizing miniaturization.

(Means for Solving the Problems) The jack according to the present invention has a sleeve protruding from the center of the front surface, a body in which a cavity is formed that communicates with the sleeve and opens downward, and and a cover that is coupled to the cover to close the opening, and a contact piece locking portion is formed on the top wall of the body.

A locking portion is formed at the upper end of the contact piece that is inserted into both side walls of the body from below the respective contact piece insertion positions to the cavity, and from which the lower end terminal portion is led out from the contact piece holding hole of the cover. The locking portion is elastically locked to the inner end in the body width direction of the contact piece locking portion, and the contact portion provided below the locking portion is disposed in the cavity.

Furthermore, when the plug is inserted into the cavity from the sleeve, the contact portion interferes with the circumferential surface of the plug to elastically lock the locking portion to the outer end in the body width direction of the armature locking portion, and The plug is configured such that the portion comes into elastic contact with the circumferential surface of the plug.

(Function) In the present invention, the upper end locking portion is elastically locked to the inner end in the body width direction of the contact piece locking portion formed on the top wall of the body, thereby applying a load to the contact piece.
The contact portion can be placed within the cavity with a pre-pressure applied in the direction of elastic contact.

Further, since the locking portion is elastically locked to the outer end of the contact piece locking portion in the body width direction when the plug is inserted, the contact portion is brought into elastic contact with the circumferential surface of the plug with strong contact pressure.

(Embodiment) Fig. 1 is an exploded perspective view showing an embodiment of the jack according to the present invention. It is shaped like a box with a downwardly opening cavity 12 formed inside. In other words,
The body 10 has four peripheral walls 10A, 10B, 10C, 1
0D and a top wall 10E (see FIG. 2), and a sleeve 11 is provided protruding from the front wall 10A. Also,
Contact piece locking portions 13A, 13B formed by windows extending in the width direction and longitudinal direction of the body 10 correspond to the contact piece insertion positions to be described later on the ceiling wall 10E.
has been established.

Then, as shown in FIG. 3, a downward contact surface 14 is provided in the middle from the lower end surface of the contact piece insertion position of each of the side walls 10B, 10C to the cavity 12, and the contact surface 14 is provided above the contact surface 14. The contact piece insertion holes 15, 15 are formed through the contact piece insertion holes 15, 15 whose hole width is reduced to form a small width part 15a and a lower part thereof is a large width part 15b.
These contact piece insertion holes 15, 15 are dovetail-shaped in this embodiment.

The cover 20 is formed by integrally protruding a plurality of upward engaging arms 20a on a rectangular plate of a size capable of closing the lower end opening of the cavity 12 of the body 10.
The engaging claws 20b of the engaging arms 20a are fitted into the body 10 by engaging the engaging holes 10a formed in the body 10. Further, when the contact piece insertion position in the opposing side walls 20A and 20B, that is, the cover 20 is fitted to the body 10 as described later, the contact piece insertion hole 15 of the body 10
Groove-shaped contact piece holding holes 21, 21 are formed at positions concentrically facing each other in the vertical direction. The rear wall 20C of the cover 20 is formed with a groove-shaped chip contact insertion hole 22 extending in the vertical direction.

The contact pieces 30, 30, and 40 are obtained by pressing a highly conductive metal plate, respectively, and show contact pieces for ground, ring, and chip.

The upper end portions of the grounding and ring contact pieces 30, 30 are bent into a dogleg shape in the thickness direction, with the upper side serving as a locking portion 31 and the lower side serving as a contact portion 32. When the contact portion 32 extends in the board width direction on both sides of the lower root portion, a flange portion 33 is formed, and this flange 33
The structure includes a lower end terminal portion 34 which extends downward in a rectangular shape and is bent outward in the board thickness direction in a dogleg shape.

The flange portion 33 is connected to the contact piece insertion hole 15 of the body 10,
It is inserted into the wide part 15b in the cover 20, and its upper end surface is extended to a size that abuts the downward contact surface 14, and the lower end edge is the front and rear edges of the contact piece holding holes 21, 21 in the cover 20. It is formed to protrude to a size that allows it to be held in contact with the section.

The tip contact piece 40 has a clamping part 41 bent forward and upward on both sides at its upper end to elastically clamp the tip part of the plug, and extends downward from the clamping part 41 in a rectangular shape and extends forward. It has a configuration including a lower end portion 42 that is bent into a box shape.

Next, the assembly procedure of the above structure will be explained.

First, as shown in FIG. 4, insert the grounding contact 30, the ring contact 30, and the tip contact 40 into the contact holding holes 21, 21 and the tip contact insertion hole 22 of the cover 20. do. That is, contact piece 3
0 and 30 are inserted into the contact piece holding hole 2 by the amount of insertion regulated by the bottom edge of the flange 33 coming into contact with the front and rear edges of the contact piece holding holes 21, 21 in the cover 20.
1 and 21, and the lower end terminal portion 34 is inserted into the cover 2.
It is held in a state derived below 0.

The chip contact piece 40 is held in a state in which the lower end terminal portion 42 is led out below the cover 20 with a regulated insertion amount by the lower surface of the holding portion 41 coming into contact with the upper surface of the cover 20.

Next, the cover 20 is opposed to the lower side of the body 10, and from this state, both the body 10 and the cover 20 are brought relatively close to each other, and the cover 20 is fitted into the downward opening in the cavity 12 of the body 10. As shown in FIG. 5, the body 10 and cover 20 are integrally joined.

In this way, when joining the body 10 and the cover 20, first, the upper end locking part 31 and the contact part 32 of the contact pieces 30, 30 are connected to the contact piece insertion hole 1, respectively.
5, 15 and is inserted into the cavity 12, and the upper inner surface of the locking part 31 is formed on the top wall 10E of the body 10 as shown in FIG. 6a. It interferes with the lower edge portion E of the portions 13A and 13B in the body width direction.

Further, when the body 10 and the cover 20 are moved relative to each other to increase the degree of connection between them, the upper surface of the collar 33 comes into contact with the downward contact surface 14 of the contact piece insertion holes 15 and 15, and The amount of insertion of the pieces 30, 30 is regulated, and the two pieces 10, 20 are completely connected, and the locking portion 31 of each contact piece 30, 30 is placed on the outside in the thickness direction, that is, on the outside in the width direction of the body 10. After being elastically deformed, as shown in FIG. 6b, the contact portion 32 is elastically locked to the inner ends in the body width direction of the contact piece locking portions 13A and 13B, and the contact portion 32 is disposed within the cavity 12.

That is, the locking portion 31 is connected to the armature locking portions 13A, 1
By elastically locking the inner end of the body 3B in the width direction, the contact portion 32 is inserted into the cavity 12 while a load is applied to the contact pieces 30 and preliminary pressure is applied in the direction of elastic contact with the plug, which will be described later. Placed.

On the other hand, the chip contact piece 40 is connected to the body and the cover 20, so that the holding part 41 is connected to the cavity 1.
2, the tip portion of the plug inserted into the cavity 12 is placed at a position where it can be elastically clamped.

When the plug is inserted into the cavity 12 from the sleeve 11, as shown in FIG. The upper ends of the pieces 30, 30 are pushed outward in the plate thickness direction, that is, outward in the body width direction.

As a result, in a state where the locking portions 31 of the contact pieces 30, 30 are pressed against the outer ends of the contact piece locking portions 13A, 13B in the body width direction and are elastically locked, the contact portion 32 is attached to the circumferential surface of the plug 50. come into contact with bullets.

In this way, the locking portion 31 is connected to the armature locking portion 13A,
13B, the contact portion 3
2 is placed in the cavity 12, and when the plug 50 is inserted, the locking portion 31 is connected to the contact piece locking portions 13A, 1.
Since the contact portion 32 is elastically engaged with the plug 50 by being elastically locked at the outer end of the body width direction of the plug 4B, the contact pressure between the contact portion 32 and the circumferential surface of the plug 50 is increased. Therefore, even if the contact pieces 30, 30 are formed thin and narrow, they can be brought into elastic contact with a contact pressure that ensures reliable electrical continuity.

On the other hand, the tip portion (not shown) of the plug 50 inserted into the cavity 12 from the sleeve 11 is elastically held by the holding portion 41 of the tip contact piece 40.

In the above embodiment, the contact piece locking portions 13A and 13B are constructed by windows formed through the top wall 10E of the body 10, but as shown in FIG.
1 protruding from the lower surface of 0E facing in the width direction of the body.
The armature locking portions 13A and 13B may be formed by a pair of protrusions.

In addition, the contact pieces 30, 30 can be used in common with jacks of different sizes by displacing the assembly positions in the width direction and longitudinal direction of the body 10, so that the contact pieces 30, 30 can be commonly used in processing dies. It can have sex.

(Effect of the invention) As explained above, according to the invention, the contact piece locking part is formed on the top wall of the body, and the cavity of the body is opened from below the contact piece insertion position on each side wall of the body. A locking part is formed at the upper end of the contact piece that is inserted through the contact piece holding hole of the cover and leads out the lower end terminal part from the contact piece holding hole of the cover, and this locking part is elastically engaged with the inner end in the width direction of the body of the contact piece part locking part. When the plug is inserted into the cavity from the sleeve, the contact portion interferes with the circumferential surface of the plug and the contact portion provided on the lower side of the locking portion is placed in the cavity. The contact part is elastically locked to the outer end of the body width direction of the contact piece locking part, and the contact part is brought into elastic contact with the circumferential surface of the plug, so even if the contact piece is thin and narrow, the contact The portion can be made elastic with a large contact pressure that ensures reliable electrical continuity with the circumferential surface of the plug.

Therefore, it has the advantage of being smaller than conventional jacks of this type.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of an embodiment of the jack according to the present invention, Fig. 2 is an erect perspective view of the body, and Fig. 3 shows the state in which the contact piece is inserted into the contact piece insertion hole of the body. FIG. 4 is a perspective view showing the state in which the contact piece is inserted and held in the cover, FIG. 5 is a perspective view of the assembled state, and FIGS. 6a and 6b show the procedure for locking the contact piece. Explanatory drawing, Fig. 7 is an explanatory drawing showing the locked state of the contact piece when inserting the plug, Fig. 8
The figure is a sectional view showing another embodiment of the contact piece locking portion. 10... Body, 10E... Top wall, 11... Sleeve, 12... Cavity, 13A, 13B... Contact piece locking portion, 20... Cover, 21... Contact piece insertion hole,
30... Contact piece, 31... Locking part, 32... Contact part, 39... Terminal part, 50... Plug.

Claims (1)

[Scope of utility model registration request] The body includes a sleeve protruding from the center of the front surface, a cavity communicating with the sleeve and opening downward, and a cover coupled to the body from below to close the opening. A contact piece locking portion is formed on the top wall, and the contact piece is inserted into the cavity from below the contact piece insertion position on each side wall of the body, and the lower end terminal portion is led out from the contact piece holding hole of the cover. A locking portion is formed at the upper end of the contact piece, and this locking portion is elastically locked to the inner end in the body width direction of the contact piece locking portion, and the contact portion provided on the lower side of the locking portion is emptied. When the plug is inserted into the cavity from the sleeve, the contact portion interferes with the circumferential surface of the plug to elastically engage the locking portion with the outer end in the width direction of the body of the contact piece locking portion. A jack characterized in that the contact portion is configured to come into elastic contact with the circumferential surface of the plug.