JP2587628Y2 - connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a male connector housing accommodating a male terminal and a female connector housing accommodating a female terminal, which are electrically connected to each other. .

`` Prior art '' Generally used connectors have a low number of terminals to be connected and have a small number of terminals.In this case, the insertion force for mating is low. In the case of a multi-pole structure with a large number of terminals, the insertion force increases,
The fitting operation is difficult to perform, and a half-fitting may occur in which the two are not sufficiently fitted.

Therefore, as a means for improving the fitting property of the multipolar connector, there is a proposal of a "connector assembly having a small insertion force" disclosed in JP-A-55-80282. That is, this "connector assembly" fits an annular operating member, which operates in a direction perpendicular to the fitting direction of the mating male connector housing and female connector housing, to the outer periphery of one side of the housing, and forms the operating member. The power is amplified and transmitted to the housing on the other side to be fitted, so that the insertion force is reduced.

"Problem to be Solved by the Invention" The "connector assembly" of the above-mentioned known means has a structure in which the operating force due to the left and right movement of the operating member is converted to an orthogonal direction and transmitted to the connector housing, and used as an insertion force. Therefore, there is a disadvantage that the degree of amplification of the transmitted insertion force is low, and it is difficult to say that the improvement of the insertability of the connector is good.

Further, the "connector assembly" is used in a state in which the operating member fitted on the outer periphery of the connector housing is loosely fitted to one of the left and right sides of the fitted connector housing, and is used when the connector is used. When the operating member receives some external force, the setting posture of the operating member is easily moved, and the fitting of the connector may be broken.

An object of the present invention is to provide a connector that solves the above-mentioned drawbacks of the conventional means.

[Means for Solving the Problems] The configuration of the present invention for achieving the above object is an operation in which the operating portion at the end of the cam plate is rotatably supported on one connector housing by projecting the operating portion at the end of the cam plate from the side wall of the connector housing. Along with mounting the member, the other connector housing is provided with a cam pin that engages with the cam groove of the cam plate, and the cam pin is formed as a rotatable friction reducing pin at a contact portion with the cam groove. One end of the cam groove is open in the fitting connection direction of the two connector housings and serves as an opening start end in which the cam pin can be introduced.In a free state before the connection of the connector housing, the opening start end and the opening start The two connector housings are arranged such that a cam pin is provided to face the guide pin, and the cam pin guided to the opening start end is engaged with the cam groove by rotation of the operation unit. And a temporary locking means for temporarily locking the posture of the operating member before rotation is provided on the opposing surface of the operating member and the connector housing on one side. It is assumed that.

Further, in the above, the temporary locking means is disposed on the side of the cam plate and the one side of the connector housing, respectively, and the operating member is in a state before the operating member rotates. The rotation locking state is released by engaging the stop means with each other, and the operating member is deformed as the two connector housings are fitted together. Is also good.

`` Operation '' Before the two connector housings are joined, the operating member is temporarily locked in a posture before rotation, and when the two connector housings are opposed to each other in this state, the cam pin faces the opening start end of the cam groove, When the fitting of both connector housings is started, the cam pins are directly introduced into the opening start ends of the cam grooves. Thereafter, the operating member is rotated by the operating portion, but the cam pin is displaced along the cam groove, and further rolls to form a low-friction relative movement, and the amplified mating coupling force obtained based on the leverage principle is obtained. Thereby, both connector housings can be easily brought into a connected state.

Further, in the case where the means for releasing the locked state of the operating member by the above-mentioned temporary locking means is set, the locking is released by the deformation of the operating member at the start of the mating between the connector housings, and the turning operation of the operating member is performed. Becomes possible.

"Example" Hereinafter, a detailed description will be given based on an example. Referring to FIGS. 1 and 2 showing an embodiment of the present invention, a male connector housing 1 (hereinafter simply referred to as male housing 1) accommodating a male terminal and a female connector housing 2 (hereinafter simply referred to as a male connector housing) accommodating a female terminal. A female housing 2) and a hood portion 3 provided in the front half of the male housing 1 for housing the front half of the female housing 2 and fittingly connecting them. On the outside of each of the upper and lower peripheral walls 4, the upper and lower peripheral walls 4
A cantilever-shaped protection plate 5 having a fixed end is formed at the rear end portion of the upper and lower peripheral walls 4 in parallel with the upper and lower peripheral walls 4, and the outer surfaces of the upper and lower peripheral walls 4 are substantially entirely covered by the protective plates 5. I have.

In the female housing 2, leg-like cam plates 8A8B are inserted into the upper and lower slits 6, and a rotatable operating member 7 is mounted to form a mechanism for amplifying the insertion force of the connector. For details, see FIGS. 1 (B), 1 (C) and 1 (D), and the operating member 7 is a cam plate 8A which is vertically symmetrical at intervals.
8B and a U-shaped two-legged body having a belt-shaped operation unit 9 connecting the head of the cam plate as a main part, and a fulcrum pin 11 protrudes at a symmetrical position outside the cam plate 8A8B. At the same time, a cam groove 10 is provided at a symmetrical position inside the cam plate 8A8B between the fulcrum pin 11 and the operation unit 9. Then, see FIG. 1 (F),
The cam groove 10 has an opening start end 10A at an edge of the cam plate 8A8B, forms a curved groove having a width B having an end 10B at an intermediate portion of the cam plate 8A8B, and the center line 10 'of the cam groove 10 is a fulcrum pin. 11 hearts
The distance L from the opening 11 'gradually decreases from the opening start 10A toward the end 10B, and forms a groove cam for receiving a cam pin 14 of the male housing 1 to be described later from the opening start 10A and leading it to the end 10B.

A fulcrum pin hole 12 for rotatably fitting the fulcrum pin 11 is formed near the center rear of the protection plate 5 of the female housing 2 as shown in FIGS. 1 (C) and 1 (G). When the cam plate 8A8B of the operating member 7 is pushed in, the cantilevered protection plate 5 is elastically displaced to allow the fulcrum pin 11 to be inserted, and finally the fulcrum pin 11 is fitted into the fulcrum pin hole 12 and , Cam plate 8A8B
Are mounted on the upper and lower slits 6 of the female housing 2 and the male and female housings 1 and 2 are in a free state in which the male and female housings 1 and 2 are not joined, and the end of the cam plate 8A8B protrudes from the side wall of the female housing 2 and the operating portion 9 contacts the side wall. Contact and stop, and the cam groove
The opening start end 10A of the female housing 2 is located at the center of the female housing 2 and faces the cam pin 14 of the mating housing.

On the other hand, referring to FIG. 1 (A), the female housing 1 is arranged at an intermediate position near the front edge of the upper and lower peripheral walls 4 so as to face the opening start end 10A of the cam groove 10 of the female housing 2 in the free state. A cam pin 14 protrudes, and this cam pin 14 fits into the cam groove 10 and forms a cam follower that is guided by the cam groove 10 and moves. And the cam pin 14 is shown in FIG.
As shown in the figure, the friction reduction pin is formed as a stepped pin body and penetrated through a cam pin hole 20 penetrating through the peripheral wall 4, and has a snap ring 21 attached to the lower end so as to be rotatable.

Then, as shown in FIG.
With the cam pins 14 facing the cam grooves 10 of the female housing 2.
, The front end of the female housing 2 is slightly inserted into the hood portion 3 of the male housing 1 to engage them,
When the operating portion 9 of the operating member 7 is rotated to the side of the male housing 1 as shown by an arrow A in the figure, the cam pin 14 is guided to the rotatable cam groove 10 and reaches the end 10B of the cam groove. The operation unit 9 of the member 7 is stopped so as to be attached to the side wall of the male housing 1 and the male and female housings 1 and 2 are fitted close to each other and connected in a normal posture.

Further, the connector having the above operating member 7 is provided with a temporary locking mechanism of the operating member 7 described in detail below. That is, as shown in FIGS. 1B, 1C, and 1D, the mutual interval between the cam plates 8A8B is "a front-end gap" of "front end interval Y <rear end interval Z", and "the front end interval Y <cam plate. The width of the front end X of the male housing 1 sandwiched between 8A8B is set to "the front end width X≤the rear end interval Z" (that is, Y <X≤Z).

At the mounting stop position of the operating member 7 shown in FIG. 1 (D), provisional locking means comprising a locking projection 15 on the side of the cam plate 8A8B and a stopper step 16 on the side of the female housing 2 are provided. When the actuating member 7 is mounted on the female housing 2 and the cam plate 8A8B is in a free state, the interlocking projection 15 and the stopper step 16 interfere with each other as shown in FIG. Then, the rotation of the operation unit 9 in the stop position in the direction of arrow A in the drawing is locked. Then, as shown in FIG. 1 (D), the female housing 2 starts fitting with the male housing 1, and the cam plate 8A
8B is forcibly expanded to the front end width X of the male housing 1 and “X ≦
When “Y” is reached, the dimensional relationship between the locking projection 15 and the stopper step 16 is adopted so that the locking projection 15 is disengaged from the stopper step 16 to release the rotation lock of the operation unit 9.

When the state of "X = Y" is reached, the cam plate 8A
A clearance C for receiving the peripheral wall of the male housing 1 is formed between the inside of the inner wall 8B and the peripheral wall 4. At the front end of the male housing 1, there is a taper guide 17 for forcibly widening the cam plate 8A8B.

According to the connector of the present invention having the above-described structure, the operating member 7 which sandwiches the upper and lower walls 4 of the female housing 2 between the cam plates 8A8B is mounted on the cam plate 8A8B. It is located in the middle of the operation unit 9 that occurs, and
A cam groove 10 having an asymptote from the fulcrum pin 11 is provided in a direction from the opening start end 10A to the end 10B, and the cam pin 14 of the female housing 2 corresponding to the cam follower is guided into the cam groove 10 by the male and female housings 1. 2 is fitted, the moment due to the reversing operation of the operating portion 9 of the operating member 7 is greatly amplified mechanically and transmitted to the cam pin 14 of the cam follower. In addition, since the cam pin 14 is a friction reducing pin, Since the friction due to the high pressure contact with the groove 10 is small, a strong approaching force is applied to the male housing 1 to the female housing 2 in the upper and lower directions evenly.

Therefore, even a pair of housings having a multi-pole structure having a large insertion resistance fit smoothly without tilting, and the male and female housings 1 and 2 are easily and securely fitted by rotation of the operation unit 9 performed by a fingertip or the like. . In addition, since the reverse rotation of the operating member 7 in the fitted set posture involves the reverse movement of the cam groove 10 of the cam pin 14 of the cam follower, it is difficult unless the operation unit 9 is caused artificially, and during the use of the connector, There is no possibility of reverse movement due to external force, and the connection posture of the connector is extremely stable.

Further, the cam plate 8A8B of the operating member 7 that generates the above-described amplifying fitting force is provided inside the protection plate 5 that covers the upper and lower walls 4 of the female housing 2 and is connected to the operation unit 9 that connects the cam plates 8A8B.
Since the connector is attached and set to the sides of the male and female housings 1 and 2, there is very little risk of the operating member 7 being damaged or breaking the set position due to some external force when the connector is used, and the connector connection position is good. Is maintained.

Further, the operating member 7 of the connector of the present invention is
Since the operating portion 9 of the female housing 2 in a single product state does not move or "raise" due to the locking action of the temporary locking means, the handleability of the female housing 2 is improved. In addition, when the male and female housings 1 and 2 are fitted, there is no need to perform an operation of resetting or confirming the operation unit 9 to a normal stop position, and it is only necessary to perform the fitting without any change. easy.

In addition, the said temporary locking means is not limited to the said Example,
As the stopper step 16, a step on the peripheral wall 4 of the female housing 2 may be used. In short, the combination of the locking projection on the cam plate 8A8B side and the step on the side of the peripheral wall 4 which perform the temporary locking action described above. Is good.

Next, another embodiment of the cam pin 14 having the friction reducing pin structure will be described with reference to FIG. First, FIG. 3 (A) shows a stepped cam pin 14 formed by insert molding at the time of injection molding of the connector housing 1. The cam pin 14 does not adhere to the peripheral wall 4 of the connector housing, and thus functions as a rotatable pin.

FIG. 3 (B) shows that a cam pin core 22 is integrally erected on the peripheral wall 4 of the connector housing to form a separate rotatable collar 23.
Are externally fitted, and a contact portion with the cam groove 10 is rotatable.

Further, FIG. 3 (C) shows a cam pin 14 at both ends of a rotatable shaft 24 which penetrates the connector housing in the vertical direction. The structure is such that the elastic locking pieces 27 are engaged to stabilize the vertical position. The cam pin of the third embodiment
14 also has a low frictional action because it rotates relative to the cam groove 10 which is in strong pressure contact and relatively moves.

[Effects of the Invention] As described above, in the connector of the present invention, since the temporary locking means for temporarily locking the operating member in the posture before the rotation is set, when the connector housings are opposed to each other, the cam pins and the cam pins are not engaged. Since the cam groove can be held at a position where the opening start end of the cam groove fits as it is, the fitting operability is excellent.

Further, since the cam pin is configured as a friction reducing pin, a low insertion force effect of the connector is large, and furthermore,
This has the effect of preventing damage to the cam pins and cam grooves and stabilizing the low insertion force performance.

[Brief description of the drawings]

FIG. 1 shows a connector of one embodiment of the present invention, (A) and (B) are perspective views of the connector, (C) is a perspective view of an operating member and a female connector housing, and (D) is a state before fitting of the connector. (E) is a sectional view taken along line AA of (C), (F) is a plan view of a cam plate of the operating member, (G) is a plan view of a protection plate of the female connector housing, H) is an enlarged front view of the mounted state of the cam pin, FIG. 2 (A)
(B) and (C): plan views showing the operation of the operating member of the embodiment of FIG. 1, and FIGS. 3 (A), (B) and (C): front views showing the mounting state of the cam pins of another embodiment of the present invention. Figure Main symbols: 1: Male connector housing, 2: Female connector housing, 3: Hood, 4: Upper and lower walls of housing, 5: Protective plate, 6: Slit, 7: Actuating member, 8A8B: Cam plate, 9 : Operation part, 10: cam groove, 10A: start end of cam groove opening, 10B: end of cam groove, 11: fulcrum pin, 12: fulcrum pin hole, 14: cam pin, 15:
Locking projection, 16: stopper step, 20: cam pin hole, 21: snap ring, 22: cam pin core, 23: rotatable collar, 2
4: Rotatable shaft, 25: Elastic locking piece

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01R 13/62-13/629

Claims (2)

(57) [Scope of request for utility model registration] An operating member having an operating portion at the end of a cam plate protruding from a side wall of the connector housing and rotatably supported is mounted on one side of the connector housing, and the cam plate is mounted on the other side of the connector housing. A cam pin is provided for engaging with the cam groove. The cam pin is formed as a rotatable friction reducing pin at a contact portion with the cam groove.
One end of the connector housing is open toward the mating direction of the two connector housings and serves as an opening start end in which the cam pins can be introduced. In a free state before the connection of the connector housings,
The opening start end and the cam pin are disposed to face each other, and the cam pin guided and introduced at the opening start end is engaged with the cam groove by the rotation of the operation portion, so that the two connector housings can be fitted and connected, A connector, wherein a temporary locking means for temporarily locking the posture before the rotation of the operating member is provided on an opposing surface of the operating member and the connector housing on one side. 2. The connector according to claim 1, wherein said temporary locking means is provided on each of said cam plate and said one connector housing, and said operating member is provided before said operating member rotates. In the state described above, while the respective temporary locking means are engaged with each other, the rotation lock state is established, while the rotational lock state is released by deforming the operating member with the fitting of the two connector housings. A connector characterized in that it is adapted to be used.