JPH0538544Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to a contact locking structure that prevents a plurality of contacts housed in a housing from being pulled out.

"Conventional technology" The contact locking structure of conventional connectors is
As shown in FIG. 5, contact receiving holes 12 are formed in the front and rear of the housing 11, and although not shown in the drawings, contacts are respectively accommodated in these contact receiving holes 12 from the back side. A window 13 communicating with each contact receiving hole 12 is formed in the housing 11, and a connector locking lid 14 is connected to the housing 11 with a band 15 facing the window 13.
It is integrally connected to the The connector locking lid 14 has engaging protrusions 1 at the front and rear corresponding to each window 13.
6 and 17 are integrally formed, and a locking protrusion 18 is integrally protruded from the inner surface of the lid 14 in correspondence with the window 13.

To lock the lid 14 to the housing 11, first insert the front engaging protrusion 16 into the window 13 as shown in FIG. 5B.
After hooking it on the front edge of the lid 1, as shown in Figure 5C,
4, the rear engaging protrusion 17 is hooked on the rear edge of the window 13 to complete the operation. At this time,
The back surface of the stabilizer 20 of the contact 19 in the contact receiving hole 12 and the locking protrusion 18 closely face each other, thereby preventing the contact 19 from being pulled out.

In this conventional contact locking structure, the locking protrusion 18 merely draws a rotation locus around the front edge of the window 13, and does not move in the axial direction, so that the incompletely inserted contact can be moved to the correct position. The pushing function was not sufficient.

"Means for Solving the Problem" According to this invention, the first and second connecting bodies extending in the arrangement direction of the contact receiving holes arranged in two rows vertically in the housing are connected by a slightly slack band. The housing is provided integrally connected to the housing, and the rear portions of the top plate and bottom plate of the housing are cut off from the back surface in correspondence with the first and second connecting bodies, respectively, to form openings communicating with the respective contact receiving holes. On the surfaces of the first and second connecting bodies facing the housing jig, locking pieces are integrally formed to protrude and are inserted into the respective contact receiving holes from the back side and lock the contacts respectively, and these locking pieces Engagement means for maintaining the contact inserted into the contact receiving hole from the back is formed between the first and second connectors and the housing. Furthermore, the leg pieces are integrally formed so as to protrude from both sides of the first and second connecting bodies so as to approach each other, and these corresponding leg pieces are connected to each other in the vertical direction and the front-back direction by the concave-convex engagement means, and this connection In this state, the bottom surface of the groove between the adjacent locking pieces and the wall end surface between the adjacent contact accommodating holes are closely opposed to each other, and the groove bottom surface and wall end surface and the wall between the locking piece and the contact accommodating hole The first and second connecting bodies in the connected state are restricted relative to the housing in the vertical direction and in the longitudinal direction of the connecting bodies, and are movable in the front-rear direction.

In other words, since the contact locking structure of this invention has a structure in which the locking piece is pushed into the contact housing hole from the back side thereof, if there is an incompletely inserted contact, it will be pushed into the correct position.

"Embodiment" FIG. 1 shows an embodiment of this invention. In the housing 11, contact receiving holes 12 extending longitudinally are formed in two vertical rows. As shown in FIG. 3, contacts 19 are respectively inserted and accommodated in the contact accommodation holes 12 from the back side.

Connecting bodies 21a, 21 extend in the direction of arrangement of the upper and lower contact housing holes 12, corresponding to the arrangement of the upper and lower contact housing holes 12.
b is arranged at the rear part of the housing 11. As shown in FIG. 1, these connecting bodies 21a and 21b are integrally connected to the side surface of the housing 11 by slack bands 22a and 22b so that they can be positioned rearward from the insertion state holding position. In FIG. 1, band 22a is shown cut away.

A locking piece 23 is integrally formed on the connecting bodies 21a and 21b so that the locking piece 23 can be inserted into each contact receiving hole 12 from the back side thereof.
The rear portions of the top plate and bottom plate of the housing 11 are cut off from the back surface in correspondence with the connecting bodies 21a and 21b, respectively, to form openings communicating with the contact receiving holes 12, respectively. A protrusion 24 is integrally formed on the front surface of each locking piece 23, as shown in FIG. Contact accommodation hole 12 of housing 11
A stopper 25 that abuts against the protrusion 24 is formed inside.

The connecting body 21 is an engaging means for maintaining the state in which the locking piece 23 is inserted into the contact housing hole 12 from the back side.
a, 21b and the housing 11.
That is, as shown in FIGS. 1 and 2, tapered engagement protrusions 2 are formed on the wall surfaces of adjacent contact housing holes 12.
6 are integrally formed, and an engagement recess 27 is formed on the opposing wall surface between the locking pieces 23 in correspondence with the engagement protrusion 26, so that the engagement protrusion 26 and the engagement recess 27 can be engaged. Ru.

In order to connect the connecting bodies 21a and 21b to each other in the vertical direction, leg pieces 28a and 28b facing each other on both sides of the connecting bodies 21a and 21b are integrally formed so as to protrude toward each other, and one leg piece 28a A small hole 29 is formed at the end of the other leg piece 28b, and a claw 31 that is engaged with the small hole 29 is integrally formed at the end of the other leg piece 28b.

To lock a contact using the contact locking structure described above, first move the connecting bodies 21a and 21b closer to each other as shown in FIG. 3B from the state shown in FIG. 29 is hooked onto the claw 31 of the leg piece 28b to connect the connecting bodies 21a and 21b to each other in the vertical direction and the front-back direction, and the locking piece 23
is inserted into the opening of the contact receiving hole 12.

In this connected state, as shown in FIG. 1, the bottom surface of the groove between the adjacent locking pieces 23, 23 and the wall end surface between the adjacent contact receiving holes 12, 12 are closely opposed to each other, and the bottom surface of the groove and Wall end surface and locking piece 2
3 and the wall between the contact housing hole 12, the first and second connecting bodies in a connected state are restricted in the vertical direction and the longitudinal direction of the connecting body with respect to the housing 11, and are only movable in the front-back direction. .

That is, the connecting bodies 21a and 21b are connected to the housing 1.
1, the locking piece 23 is moved forward within the contact receiving hole 12 as shown in FIG. 3C. When the protrusion 24 abuts against the stopper 25, the engagement protrusion 26 engages with the engagement recess 27, and the connecting bodies 21a, 21b are prevented from coming out rearward. At this time, the front surface of the locking piece 23 comes close to the back surface of the stabilizer 20 of the contact 19, thereby preventing the contact 19 from being pulled out. Even if the contact 19 is in an incompletely inserted state, by moving the locking piece 23 forward, the contact 19 is automatically inserted to the normal position by the locking piece 23.

"Effect of the invention" As described above, according to the contact locking structure of this invention, movement of the connected first and second connecting bodies in the vertical direction and the longitudinal direction of the connecting body with respect to the housing 11 is completely restricted. Since the locking piece 23 can be moved only in the front-back direction, the locking piece 23 can be moved over a large distance, and even if there is an incompletely inserted contact that is large enough to be seen visually, it can be reliably placed in the correct position. It can be moved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of the contact locking structure of the connector according to this invention, FIG. 2 is a perspective view showing an example of the means for engaging the housing and the connecting body,
Fig. 3 is a cross-sectional view showing each process of locking the locking piece, Fig. 4 is a perspective view showing a conventional contact locking structure, and Fig. 5 is a partial cross-sectional view showing the locking process of the conventional one. be.

Claims (1)

[Scope of Claim for Utility Model Registration] A connector in which contact accommodation holes are arranged in two rows vertically in a housing, and contacts are inserted into these contact accommodation holes from the back side, wherein each of the above-mentioned upper and lower contacts is provided in the rear part of the housing. First and second connecting bodies are provided that face the arrangement of the housing holes and extend in the direction of the arrangement, and rear portions of the top and bottom plates of the housing correspond to the first and second connecting bodies, respectively. openings are cut off from the back surface and communicate with the respective contact receiving holes, and the contact receiving holes are respectively inserted into the respective contact receiving holes from the back surface on the surfaces of the first and second connecting bodies facing the housing; Locking pieces for locking each of the contacts are integrally formed in a protruding manner, and an engaging means for maintaining the locking pieces inserted into the contact housing hole from the back side is provided in the first and second contacts.
The first and second connecting bodies are formed between a connecting body and the housing, and the first and second connecting bodies are integrally connected to the housing by a slack band so that they can be positioned rearward from the inserted state holding position, Leg pieces are integrally formed so as to protrude from both sides of the first and second connecting bodies so as to approach each other, and these corresponding leg pieces are connected to each other in the vertical direction and the front-back direction by a concave-convex engagement means, and this connection In this state, the bottom surface of the groove between the adjacent locking pieces and the wall end surface between the adjacent contact receiving holes are close to each other, and the groove bottom and wall end surface are in contact with each other between the locking piece and the contact receiving hole. The first and second connected bodies connected by the wall of
A contact locking structure of a connector that is movable in a front-back direction with respect to the housing while being restricted in the vertical direction and the longitudinal direction of the connecting body.