JPS63298985A - Multipolar connector requiring little attaching-detaching force - Google Patents

Abstract

PURPOSE:To facilitate the attaching and detaching operation to be performed in a narrow space by causing a slider, which constitutes a cam mechanism for engaging and disengaging two housings, to be ordinarily installed on either one of the two. CONSTITUTION:A projected housing 2 is inserted into the recessed body 7 of a recessed housing 1. The insertion is carried on until the cam follower 21 of a temporarily locked slider 3 reaches the back wall of the inlet part 25a of a guiding groove 25. When the slider 3 is then moved to the left, the housing 2 approaches the housing 1 by means of the groove 25, which is engaged with the follower 21, and comes in sliding contact with a gentle slope of the groove 25 so that an engagement is completed with only a small force. If the operation of the slider 3 at the time of detaching is performed in such a manner that the central part of a pressing part 18, that is, the middle part between rails 11,12, is pressed with the tip of a finger, the angular moment is little and a wasteful force is unnecessary. Since the slider 3 is installed on the housing 1 in advance, a space for the installation thereof is not required specifically. Thereby, the attaching and detaching operation in a limited narrow space is made possible, and the force required for the attaching and detaching operation can also be made smaller.

Description

[Detailed Description of the Invention] Light and Light [Industrial Application Field] The present invention allows convex and concave housings that accommodate a plurality of female and A terminals to be fitted and disengaged with a small force. This invention relates to a multi-pole connector.

[Conventional technology]

Japanese Unexamined Patent Publication No. 61-203581 discloses a technique in which a cam mechanism is used to engage and disengage a first connector housing and a second connector housing with a small force. The cam mechanism consists of two aligned slots in the first housing, a cam tracker in the second housing, and a cam follower mounted on a cam follower slide. The cam driven slide is U-shaped, consisting of a web and a pair of parallel arms extending from the web, the arms extending approximately the distance between the end walls of a flange forming a hood for receiving a second housing in a first housing. The cam followers are of equal length and are located on the inner surface of the arm.

[Problem that the invention seeks to solve]

According to the cam mechanism, the cam driven slide must be installed perpendicular to the direction in which the first and second housings are fitted. Therefore, a mounting space that is sufficiently wider than the length of the slide is required on one side of the connector, which poses a problem in terms of workability when mating and unmating the connector in a narrow space such as a car dash board. Ta. Also, since the cam follower slides guided by the slot, the cam follower slide requires two aligned slots on one side to prevent rotation of the cam follower slide due to rotational moments. Correspondingly, two cam tracks must be provided on one side, and the slope thereof is steep, requiring a relatively large insertion/extraction force.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a low insertion/extraction force multipolar connector that allows connectors to be easily fitted or removed even in a limited narrow space with small force.

[Means and effects for solving the problem] In order to achieve the above object, the low insertion/extraction force multi-pole connector of the present invention has a convex housing housing a plurality of male terminals and a plurality of female terminals. In a multi-pole connector in which male and female terminals are electrically connected by fitting with a concave housing that accommodates the terminals, a shaft of the terminal and A pair of parallel guide rails are provided in orthogonal directions, a slider is slidably mounted on the guide rails, a cam follower is provided protruding from the lower surface of the slider, and the cam follower is provided on the housing portion. A space is provided to allow movement of the convex housing, and a guide groove is provided in the side wall of the convex housing to engage the cam follower extending through the space and extending obliquely toward the rear from the fitting surface with the concave housing. The present invention is characterized in that the convex housing is moved toward or away from the concave housing by moving the slider along the guide rail.

The slider is mounted in advance on a pair of guide rails provided on the sleeve portion of the concave housing. Therefore, there is no need to attach the housing from one side when fitting the housing, and as long as the convex and concave housings have a large space, it can be used even in a limited space.

Furthermore, since the slider slides along a pair of guide rails, by applying force for moving the slider near its center, stable movement is achieved with less rotational moment. Furthermore, since the slider slides along the guide rail, only one guide groove that engages with the cam follower needs to be provided on one side of the convex housing, and the slope of the guide groove can be formed gently. This has the effect of reducing the force required for fitting and disengaging the housing.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 3, 1 is a concave housing; 2 is a concave housing;
3 indicates a convex housing, and 3 indicates a slider. Both housings 1 and 2 house a plurality of male terminals 4 and female terminals 5, respectively, as shown in FIG.

The concave housing 1 has a convex housing 2 in front of the mating surface 6.
The receiver has a mantle part 7 for receiving. The mantle body part 7 is a frame body consisting of upper and lower side walls 8, 9 facing each other and left and right end walls 10. Above the end walls 10 is an enlarged part 10 that bulges outward.
It is in contact with the side wall 8 via 3 at both ends. The side wall 8 has a pair of parallel guide rails 11, 12 for the slider 3 and a slot 13 which is open at one end (on the left side as viewed in FIG. 1).

One guide rail 11 is formed one step higher along the front edge of the side wall 8, and the other guide rail 12 extends from the rear edge of the side wall 8 to have a stepped structure.

As described above, the slot 13 has at least one end opening 1.
3a, and is provided near the front guide rail 11. Further, the opening 13 is provided at the bottom of each guide rail 11, 12.
A locking/locking projection 14 and a temporary locking projection 15 for the slider 3 are provided on the side a, and a locking projection 16 is provided on the other side, and the slider 3 is provided on the terminal end side of the guide rail 11 (the right side as seen in FIG. 1). A stopper 17 is provided in a protruding manner.

The slider 3 has insertion grooves 19 and 20 on both sides of the lower surface of the chevron-shaped pressing portion 18 for the guide rails 11 and 12 of the stepped structure.
It has a structure in which a cylindrical cam follower 21 is provided protruding from the center of the lower surface. The locking protrusions 14 to 1 are provided on the inner end surfaces of the groove bottom walls 19a and 20a in each insertion groove 19 and 20.
A detent locking projection 22 is provided which engages with 6.

The lower surface of the pressing part 18, that is, the sliding surface 18 with the side wall 8
It is preferable to provide a plurality of recesses 18b in the groove a as shown in the figure to reduce sliding resistance.

The convex housing 2 includes a main body portion 23 that accommodates a female terminal.
An enlarged plate part 24 that matches the enlarged part 10a of the sleeve part 7 is formed in an enlarged manner on the upper part of the cam follower 2.
A guide groove 25 is provided which engages with 1. Guide groove 25
An inlet portion 25a extending inward from the fitting surface 26 of the convex housing 2, an intermediate portion 25b extending obliquely toward the rear thereof, and an outlet portion 25c extending parallel to the fitting surface 26.
It consists of.

In addition, since the concave housing 1 and the convex housing 2 are formed as large-sized multi-pole connectors, as shown in FIG.
The fitting surface 6 of the concave housing 1 is provided with a long fitting guide rod 27 at the center and short fitting guide rods 28 on both sides.
It is preferable to provide a corresponding recess 29 in the fitting surface 26 of the convex housing 2 to prevent reverse coupling and to eliminate vibration of both the housings 1 and 2 during operation of the slider 3, which will be described later.

As shown in FIG.
．． 12, and is slidably mounted in advance.

In FIG. 2, the cam follower 21 of the slider 3 is inserted into the slot 13.
is introduced into the interior through the opening 13a of the insertion groove 19, 20.
The detent locking protrusion 22 is shown temporarily locked between the locking protrusion 14 and the temporary locking protrusion 15 on the guide rails 11 and 12. The slider 3 has two guide rails 11, 1
2, the width of the slot 13 can be made wide or narrow as long as it allows the movement of the cam follower 21.

The two housings 1 and 2 are fitted together as shown in FIGS. 4 to 6.

First, the convex housing 2 is attached to the sleeve part 7 of the concave housing 1.
Insert. The insertion is continued until the temporarily locked cam follower 21 of the slider 3 reaches the back wall of the entrance portion 25a of the guide groove 25 (FIG. 4). As a result, the tips of the male and female terminals 4.degree. 5 shown in FIG. 7 come into contact with each other, and fitting begins.

Subsequently, when the slider 3 is moved to the left as shown in FIG. 5, the convex housing 2 approaches the concave housing 1 by the guide groove 25 that engages with the cam follower 21. The cam follower 21 is located at a gently inclined intermediate portion 25b of the guide groove 25.
Since it comes into sliding contact with the connector, it is possible to achieve fitting with a small amount of force.

FIG. 6 shows the fitted state, in which the cam follower 21 is located at the exit portion 25c of the guide groove 25, the slider 3 is in contact with the stopper 17, and the detent locking protrusion 22 and the guide rail 11.12 portion are in contact with each other. It is locked by engagement with the locking protrusion 16.

Both housings can be removed by following the exact opposite procedure to the above. If the slider 3 is operated by pressing the central part of the chevron-shaped pressing part 18, that is, the middle part of the two guide rails 11.degree. Since the slider 3 is mounted in the concave housing 1 in advance, the operator only has to operate the slider, which eliminates the trouble of mounting the slider from one side of the housing as in the prior art. Furthermore, since no particular space is required for mounting the slider, it can be mounted and removed in a narrow space.

In another embodiment, a cam follower 21' is formed at one end as shown in the figure, and a rail guide portion 19' is formed.

As a slider 3' with 20' facing each other, the front edge of the side wall 8' of the illustrated concave housing 1' may be cut off to provide a movement space for the cam follower 21'.

FIGS. 8A to 8C show other embodiments of the cam followers and their guide grooves, and the shapes of the cam followers 30, 31, and 32 are respectively conical (a) 9 cylinders (b) 9 trapezoids (C), and the corresponding guide grooves 33 and 34 have a triangular cross section (a) and two trapezoidal cross sections (b, c). (As shown in C1, the combination of trapezoids prevents the slider and the guide groove from coming off. It can also be used for prevention.

FIG. 9 is a graph showing the relationship between the stroke and the fitting force when the two housings are fitted, with respect to the connection state of the female and male terminals. As can be seen from the curve A, the fitting force initially rises rapidly due to static friction and reaches A, L peak A2, and then becomes constant A3 due to dynamic friction and the fitting is completed.

Therefore, although FIG. 1 shows the case where the slope of the middle part of the guide groove 25 is constant, as shown in FIGS. Various guide grooves 35, 36, 37 can be formed. All guide grooves have intermediate portions 35b, 36b, 3 with gentle slopes.
7b and the subsequent large inclined intermediate portion 35b', 3
6b' and 37b', and in (C), the slope S at the time of fitting and the slope S' at the time of separation are formed opposite to each other.

[溌] He L! As explained above, in the low insertion/extraction force multi-pole connector of the present invention, the slider that constitutes the cam mechanism for fitting or disengaging the convex and concave housings is always mounted on one housing (the concave type). Since the slider is in a fixed state, it is possible to work in a limited space, and since the slider slides along two guide rails, there is less wasted force such as rotational moment (and there is less cam tracking). Only one guide groove that engages with the child needs to be provided, and since the inclination of the guide groove can be made gentler, the force required for fitting and disengaging the two housings can be further reduced.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the low insertion/extraction force multi-pole connector according to the present invention, Fig. 2 is a plan view of the slider mounted in Fig. 1, and Fig. 3 is a view of the slider in Fig. 1 from below. 4 to 6 are plan views showing the mating process of the connector in FIG. 1, FIG. 7 is a cross-sectional view of a portion of the convex and concave housings in FIG. a) to (C1 are cross-sectional views showing other aspects of the cam follower and the guide groove, respectively; FIG. 9 is a graph showing the relationship between stroke and fitting force when fitting convex and concave housings; 10th Figures (al to (C)) are plan views showing other embodiments of the guide groove, respectively, and Fig. 11 is an exploded perspective view showing other embodiments of the slider and the recessed housing. 1... Recessed housing, 2 ...Convex housing, 3
... Slider, 7 ... Mantle body part, 11, 12 ... Guide rail, 13 ... Slot, 21 ... Cam follower, 25 ... Guide groove. Patent Applicant: Yazaki Sogyo Co., Ltd. Takashi Figure 4 Figure 5 Toro "= δ゛ Figure 9 5b (a) (C) (C) Figure 8 Figure 10 Figure 11 Procedural Amendment Document issued in 1988 August 14, 2006 Commissioner of the Japan Patent Office ノ J１月■ Rikushuu Tono 1, 11 Cow's 1986 Kiyoshi No. 131238 2 Title of the invention Low insertion/extraction force multi-pole connector 3 Amendator Hanyu Relationship with Patent applicant address: 1-4-28 Mita, Minato-ku, Tokyo Name (689)
) Yasaki Sogyo Co., Ltd. 4, Agent 5, Date of amendment order: Showa, Month, Day 6, ``Scope of Claims'' and ``Detailed Description of the Invention'' of the specification to be amended.
(column)・Contents of amendment (Japanese Patent Application No. 131238/1982) 1. The scope of the claims is amended as follows: A dish-shaped housing housing a plurality of male terminals and an irises-shaped housing housing a plurality of female terminals are fitted together to electrically connect male and female terminals. In this multi-pin connector, a pair of parallel guide rails are provided in a direction perpendicular to the axis of the terminal on one longitudinal side wall of the housing part that receives the convex housing of the concave housing, and the slider can slide on the guide rails. The slider has a cam follower protruding from its lower surface, a space for allowing movement of the cam follower in the housing, and a side wall of the convex housing with a cam follower extending through the space. A guide groove is provided that engages the extending cam follower and extends obliquely toward the rear from the fitting surface with the concave housing, and by moving the slider along the guide rail, the convex housing is moved relative to the concave housing. 2. On page 4 of the specification, lines 4 to 6, it says "a convex housing and a concave housing housing a plurality of female terminals". is corrected to be a convex housing J that accommodates a concave housing and a plurality of female terminals.

Claims (1)

[Claims] A multi-pole connector in which male and female terminals are electrically connected by fitting a convex housing housing a plurality of male terminals to a concave housing housing a plurality of female terminals,
A pair of parallel guide rails is provided in a direction perpendicular to the axis of the terminal on one longitudinal side wall of the housing portion of the concave housing that receives the convex housing, and a slider is slidably mounted on the guide rails. The slider has a cam follower protruding from its lower surface, and a space for allowing movement of the cam follower in the housing part, and a cam follower extending through the space is provided on the side wall of the convex housing. A guide groove is provided that engages with the concave housing and extends obliquely toward the rear from the fitting surface with the concave housing, and by moving the slider along the guide rail, the convex housing approaches or moves away from the concave housing. A multi-pole connector with low insertion/extraction force.