JP2013069622A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize a holding force of a housing without enlarging the housing.SOLUTION: This connector comprises: a male housing 71 that can be fitted with and detached from a female housing 11; and a finger hooking part 77 that is indented inward from an outer face of the male housing 71 and that is formed so that a width dimension in a width direction orthogonal to a fitting direction is enlarged from both ends in the fitting direction to the female housing 11 toward a center part of the fitting direction. In this constitution, the finger hooking part 77 is not projected from the outer face of the male housing 71, and therefore, the finger hooking part 77 can be formed without enlarging the male housing 71. Also, the finger hooking part 77 is formed corresponding to a shape of a tip of a finger F, and therefore, the tip of the finger F can be hooked in contact with the finger hooking part 77. Accordingly, a holding force of the male housing 71 when the finger F is hooked to the finger hooking part 77 can be stabilized.

Description

  The present invention relates to a connector provided with a finger hook portion.

  2. Description of the Related Art Conventionally, a connector described in Patent Document 1 below is known as a connector provided with a finger hook portion for hooking a finger when the connector is fitted and detached. This connector has a synthetic resin housing, a lock arm is formed on the upper surface of the housing, and a finger-hanging projection is formed on the lower surface of the housing. An operation protrusion is formed at the rear end of the lock arm, and the operation hook and the finger hook protrusion constitute a finger hook. By placing a finger on this finger-hanging portion, the finger is fixed so as not to slide with respect to the housing, and the connector can be fitted and detached.

Japanese Patent No. 3235484

  However, the above-described finger-hanging portion has a structure in which a protrusion is formed on the outer surface of the housing, and the larger the protrusion amount of the protrusion, the larger the housing. Also, since the housing is held by biting the protrusion into the belly of the finger, depending on the shape and hardness of the finger, there is a difference in the degree of hooking of the protrusion, and the holding force of the housing changes. End up.

  The present invention has been completed based on the above situation, and an object thereof is to stabilize the holding force of the housing without increasing the size of the housing.

  The present invention is a housing that can be fitted to and detached from the mating housing, and is recessed from the outer surface of the housing to the inner side, from both ends in the mating direction with the mating housing toward the center in the mating direction. It is characterized in that it is configured to include a finger hook portion formed so that the width dimension in the width direction orthogonal to the fitting direction is widened.

  According to such a configuration, since the finger hanging portion does not protrude from the outer surface of the housing, the finger hanging portion can be formed without increasing the size of the housing. In addition, since the finger hooking portion is formed along the shape of the finger belly, the finger belly can be hooked in a state of being directed to the finger hooking portion. Accordingly, it is possible to stabilize the holding force of the housing when the finger is hooked on the finger-hanging portion.

The following configuration is preferable as an embodiment of the present invention.
The center part in the fitting direction of the finger-hanging part is the deepest part having the deepest depth dimension, and the width dimension may be the largest in the deepest part.
According to such a configuration, since the deepest is the deepest in the center portion in the fitting direction of the finger-hanging portion and the width dimension is the widest, the finger can be easily placed on the finger-hanging portion.

The finger-hanging part may be configured to be deeper from the both ends in the width direction toward the center part in the width direction.
According to such a configuration, the finger can hardly slide in the width direction in a state where the belly of the finger is directed to the finger hanging portion.

Both ends in the fitting direction of the finger hanging portion may be arranged symmetrically with respect to the central portion in the fitting direction.
According to such a configuration, it is easy to operate by hooking a finger on the finger-hanging portion both during the fitting and the detaching.

The mating housing can be engaged with a cam groove provided on the lever on the outer surface of the housing by rotating the lever so that the mating housing is properly fitted with the housing. A cam pin may be provided, and the finger-hanging portion may be configured to be recessed on the surface on which the cam pin is provided.
According to such a configuration, since the cam pin and the finger hook portion are arranged on the same surface, the cam pin can be easily inserted into and removed from the cam groove.

The housing may have a cylindrical portion that is configured to open forward, a cam pin is provided on the outer surface of the cylindrical portion, and a finger hooking portion may be provided behind the cam pin in the housing.
According to such a configuration, there is no possibility that the finger hook portion interferes with the mating housing when the cam pin is inserted into and removed from the cam groove.

The finger hooking part may be configured to have a step shape from both ends in the fitting direction toward the center in the fitting direction.
According to such a configuration, each step of the finger hook is hooked on the belly of the finger, so that the holding force of the housing can be increased.

The inner surface of the wall constituting the finger hanging portion may be configured to protrude toward the inner side of the housing toward the rear.
According to such a configuration, since the finger-hanging portion can be formed without increasing the wall constituting the finger-hanging portion, the housing can be reduced in size.

  According to the present invention, the holding force of the housing can be stabilized without increasing the size of the housing.

Left side view of male housing Top view of male housing Front view of male housing Rear view of male housing AA line sectional view of FIG. FIG. 2 is a cross-sectional view taken along the line B-B in FIG. Female connector right side view Top view of female connector Sectional view showing a normal mated state where both male and female connectors are mated properly

<Embodiment>
An embodiment of the present invention will be described with reference to the drawings of FIGS. In this embodiment, the male connector 70 shown in FIG. 1 and the lever-type connector 10 shown in FIG. 7 can be fitted, and the male connector 70 corresponds to the connector of the present invention. As shown in FIG. 7, the lever-type connector 10 includes a female housing 11 made of synthetic resin, a lever 30 that is rotatably attached to the female housing 11, and an electric wire cover (behind the female housing 11). (Not shown). In the following description, the front-rear direction is based on the fitting direction of the male and female connectors 10 and 70 shown in FIG.

  The male connector 70 includes a male housing 71 made of synthetic resin, and the male housing 71 includes an inner cylinder portion 72 that is open forward. A male terminal 80 is housed inside the male housing 71 behind the inner cylinder portion 72. The male housing 71 is provided with a male lance 73 that holds the male terminal 80 inside the male housing 71. The male lance 73 has a shape that projects forward in a cantilevered manner.

  A front retainer 74 is attached to the inner wall of the inner cylinder portion 72. The front retainer 74 includes a bending restricting piece 75 that restricts the bending of the male lance 73 by entering the bending space of the male lance 73 from the front. Further, the front surface of the front retainer 74 and the back surface of the inner cylinder portion 72 are arranged so as to be flush with each other. Thereby, the male terminal 80 is held by the male housing 71 in a double locked state by the male lance 73 and the front retainer 74.

  As shown in FIG. 6, the male terminal 80 includes a male tab 81 that protrudes forward in the form of a tab, a male terminal main body 82 that is connected to the male lance 73 and is connected to the rear of the male tab 81. It is configured. The male tab 81 is configured to project forward from the inside of the male housing 71 through the inner wall of the inner cylindrical portion 72. The front end of the male tab 81 is located behind the front edge of the inner cylinder portion 72. For this reason, the male tab 81 is covered with the inner cylinder part 72 over the perimeter.

  As shown in FIG. 9, the female housing 11 has an outer tube portion 12 in which the inner tube portion 72 of the male connector 70 can be fitted. Inside the outer cylinder portion 12, a terminal accommodating portion 13 capable of accommodating a female terminal (not shown) is provided. The terminal accommodating portion 13 can be fitted into the inner cylindrical portion 72 of the male connector 70. The terminal accommodating part 13 can accommodate each female terminal individually. The terminal accommodating portion 13 is configured to protrude forward from the inner surface of the outer cylinder portion 12. The front end of the terminal accommodating portion 13 is located behind the front edge of the outer cylinder portion 12. For this reason, the terminal accommodating part 13 is covered with the outer cylinder part 12 over the perimeter.

  A female lance 14 is provided inside the terminal accommodating portion 13. The female lance 14 has a shape that projects forward in a cantilevered manner. Unlike the male connector 70, the terminal accommodating portion 13 is not equipped with a front retainer. On the other hand, a rubber plug housing portion 15 in which a cylindrical rubber plug (not shown) is mounted is provided behind the terminal housing portion 13. The rubber plug housing 15 is configured to open rearward. Further, the internal space of the rubber plug housing portion 15 communicates with the internal space of the terminal housing portion 13. Further, the rubber plug housing portion 15 has a larger diameter than the terminal housing portion 13.

  A mounting cylinder 16 to which a rubber ring 41 is mounted is provided around the base end portion of the terminal accommodating portion 13. The mounting cylinder 16 is slightly larger than the terminal accommodating portion 13. Further, the mounting cylinder 16 is connected to the rear wall 17 of the female housing 11 so as to collectively surround the plurality of terminal accommodating portions 13 (a pair of terminal accommodating portions 13 in the present embodiment). When the rubber ring 41 is externally fitted to the mounting cylinder 16 and both the connectors 10 and 70 are fitted, the rubber ring 41 has an inner peripheral surface of the inner cylindrical portion 72 and an outer peripheral surface of the mounting cylinder 16 as shown in FIG. Between the connectors 10 and 70 and the ingress of water into the inner cylindrical portion 72 is restricted.

  A protective wall 18 is provided on the rear wall 17 of the female housing 11 so as to protrude rearward. The protective wall 18 has a horizontally long, substantially rectangular shape along the left and right side edges and the upper and lower side edges of the rear wall 17 of the female housing 11. The rear edge of the protective wall 18 is arranged in front of the rear edge of the rubber stopper housing 15. In addition, a finger insertion portion 18A is formed in the upper portion of the protection wall 18 by cutting out a part of the protection wall 18, and the finger insertion portion 18A has a size that allows the tip of the finger to enter. Further, the protective wall 18 is provided with a reinforcing wall 19 connected to the outer peripheral surface of the rubber stopper housing 15. The protective wall 18 is reinforced by the reinforcing wall 19.

  The lever 30 is made of synthetic resin, and as shown in FIG. 8, a pair of arm portions 31, 31 arranged along the left and right side walls of the female housing 11, and the free ends of both arm portions 31, 31 are provided. The operation unit 32 is connected to each other. The lever 30 is rotatable between an initial position shown in FIG. 7 and a fitting position shown in FIG. A cam groove (not shown) is formed in the arm portion 31, and a pair of cam pins 76 provided on the left and right side walls of the male housing 71 enter the cam groove, and then follow the turning operation of the lever 30. Then, the cam pins 76 and the cam grooves are engaged, and the two connectors 10 and 70 are engaged by exerting a cam action, and both the connectors 10 and 70 are detached by rotating the lever 30 in the reverse direction.

  As shown in FIG. 9, the operation portion 32 is provided with a lever lock portion 33. The lever lock portion 33 has an elastically deflectable lock piece 34, and a lock hole 35 is formed through the lock piece 34. Further, a finger-addressed portion 36 is provided at a position facing the lock piece 34. The finger-addressed portion 36 is provided with a plurality of protrusions so that the finger is difficult to slip. In the initial position, the lever lock portion 33 is disposed obliquely above and forward of the female housing 11 as shown in FIG.

  On the other hand, on the upper edge portion of the rear wall 17 of the female housing 11, a housing lock portion 25 that can be engaged with the lever lock portion 33 at the fitting position is provided. The housing lock portion 25 is configured to extend rearward from the upper edge portion of the rear wall 17 of the female housing 11, and a lock protrusion 26 that fits into the lock hole 35 of the lock piece 34 is provided at the extended end portion. It has been. As shown in FIG. 7, the lock protrusion 26 is formed at a position one step higher than the upper surface of the female housing 11, and is opened rearward between the lock protrusion 26 and the upper surface of the reinforcing wall 19. The space which makes the form which forms is formed.

  As shown in FIG. 9, when the lever 30 is rotated to the fitting position, the lock projection 26 is fitted and locked in the lock hole 35, and the rotation of the lever 30 to the initial position is restricted. Locked to the locked state. In order to release the lock between the lock hole 35 and the lock projection 26, the finger is hooked on the finger-addressed portion 36 provided at the tip of the lock piece 34, and the lock piece 34 is bent in the release direction. At this time, the tip of the finger is arranged in the finger insertion portion 18 </ b> A, and the tip of the finger is prevented from interfering with the protective wall 18.

  As shown in FIGS. 1 and 2, a pair of left and right finger hooks 77, 77 are recessed behind the cam pins 76, 76 on the left and right side walls of the male housing 71. Specifically, the finger hook portion 77 is formed to be recessed from the surface of the outer surface of the male housing 71 where the cam pin 76 is provided to the inner side of the male housing 71. Further, the finger-hanging portion 77 is formed so that the width dimension in the vertical direction becomes wider from the both ends in the front-rear direction toward the center in the front-rear direction. Furthermore, the center part in the front-rear direction of the finger-hanging part 77 is the deepest part with the deepest depth dimension, and the width dimension is the widest at the deepest part.

  Both front and rear ends of the finger rest 77 are arranged symmetrically with respect to the front and rear center. Further, the finger rest portion 77 is formed in a stepped shape from both front and rear end portions toward the front and rear center portion. Specifically, the finger hanging portion 77 is divided into five steps and is formed in a staircase shape, of which the third step is the deepest portion. Further, as shown in FIG. 5, the finger hook portion 77 is formed so as to become deeper from both ends in the vertical direction toward the central portion in the vertical direction. Of the left and right side walls of the male housing 71, the inner surface of the wall constituting the finger rest 77 is configured to protrude toward the inner side of the male housing 71 toward the rear as shown in FIG.

  The present embodiment is configured as described above, and its operation will be described subsequently. First, the fitting operation of both the connectors 10 and 70 will be described. As shown in FIG. 6, the fingers F are directed to the finger hooks 77, the male housing 71 is held in the hand, and both the connectors 10 and 70 are shallowly fitted with the lever 30 placed in the initial position. When the lever 30 is rotated from the initial position toward the fitting position, the two connectors 10 and 70 are attracted to each other by exerting a cam action by the engagement of the cam pin and the cam groove. When the lever lock portion 33 is inserted into the housing lock portion 25, the lock piece 34 is bent so that the tip of the lock piece 34 rides on the lock projection 26, and the tip of the lock piece 34 gets over the lock projection 26. Then, the lock piece 34 is elastically restored, and the lock protrusion 26 is fitted into the lock hole 35 vigorously. As a result, as shown in FIG. 9, the lever 30 reaches the fitting position, the connectors 10 and 70 are properly fitted, and the lock projection 26 and the lock hole 35 are locked and locked. 30 is held in the fitting position.

  Next, the operation of detaching both connectors 10 and 70 will be described. First, the tip of the finger is advanced into the finger insertion portion 18A, and the lock protrusion 34 is bent by bending the lock piece 34 in the release direction (upward direction in FIG. 9) by applying the belly portion of the finger to the finger-addressed portion 36. 26 and the lock hole 35 are unlocked. On the other hand, the finger F is applied to the finger hooking portion 77 of the male housing 71, and the lever 30 is rotated from the fitting position toward the initial position. During this time, both the connectors 10 and 70 are separated from each other by the cam action caused by the engagement of the cam pins and the cam grooves, and after the lever 30 has reached the initial position, the connectors 10 and 70 are manually detached, whereby both the connectors 10 and 70 are removed. The departure of 70 is completed.

  As described above, according to the present embodiment, since the finger hanging portion 77 does not protrude from the outer surface of the male housing 71, the finger hanging portion 77 can be formed without increasing the size of the male housing 71. In addition, since the finger hook portion 77 is formed along the shape of the belly of the finger F, the finger F can be hooked in a state where the bell of the finger F is directed to the finger hook portion 77. Therefore, it is possible to stabilize the holding force of the male housing 71 when the finger F is hooked on the finger hook portion 77. In addition, since the depth dimension of the finger hanging portion 77 is the deepest and the width dimension is the widest at the center in the front-rear direction of the finger hanging portion 77, the finger F can be easily placed on the finger hanging portion 77.

  In addition, since it is formed so as to become deeper from the both front and rear ends of the finger hanging portion 77 toward the center portion in the front and rear direction, the finger F is difficult to slip in the width direction when the belly of the finger F is directed to the finger hanging portion 77. it can. In addition, since both the front and rear ends of the finger hanging portion 77 are arranged symmetrically with respect to the center portion in the front and rear direction, the finger F can be easily hooked on the finger hanging portion 77 at the time of both engagement and disengagement. Further, since the cam pin 76 and the finger hook portion 77 are arranged on the same surface, the cam pin 76 can be easily inserted into and removed from the cam groove. Further, since the finger hooking portion 77 is provided behind the cam pin 76, the finger hooking portion 77 does not interfere with the female housing 11 when the cam pin 76 is inserted into and removed from the cam groove.

  In addition, since the finger hanging portion 77 is formed in a step shape, each step of the finger hanging portion 77 is caught on the belly of the finger F, and the holding force of the male housing 71 can be increased. Moreover, since it was set as the form which protrudes to the inner side of the male housing 71, so that the inner surface of the finger hanging part 77 goes back, since the finger hanging part 77 can be formed without making the wall which comprises the finger hanging part 77 thick, the male housing 71 is formed. Can be downsized.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) Although the pair of finger hooks 77 and 77 are formed on the outer surface of the male housing 71 in the above embodiment, only one finger hook may be formed according to the present invention.

  (2) Although the pair of finger hooks 77 and 77 are formed on the left and right side walls of the male housing 71 in the above embodiment, a pair of finger hooks are formed on the bottom wall and the ceiling wall of the male housing 71 according to the present invention. May be.

  (3) Although the width dimension is the widest at the deepest part of the finger hanging part 77 in the above embodiment, according to the present invention, the width dimension may be the widest at a position away from the deepest part. Moreover, it is good also considering the position remove | deviated from the front-back direction center part of the finger-hanging part as the deepest part.

  (4) Although the finger hook portion 77 is arranged behind the cam pin 76 in the above embodiment, according to the present invention, the finger hook portion may be provided at the same position as the cam pin 76 in the front-rear direction.

  (5) Although the step-shaped finger hanging portion 77 is formed in the above embodiment, according to the present invention, a finger hanging portion having no step may be formed.

  (6) In the above embodiment, the inner surface of the wall constituting the finger hanging portion 77 protrudes toward the inner side of the male housing 71 toward the rear, but according to the present invention, the inner surface of the wall constituting the finger hanging portion is It is good also as a form extended in a direction.

11 ... Female housing (mating housing)
70 ... Male connector 71 ... Male housing 72 ... Inner cylinder part (cylinder part)
76 ... Cam pin 77 ... Finger part F ... Finger

Claims (8)

A housing that can be fitted and removed from the mating housing;
This housing is recessed from the outer surface to the inner side so that the width dimension in the width direction perpendicular to the fitting direction increases from both ends in the fitting direction with the counterpart housing toward the center in the fitting direction. And a finger hook formed on the connector.   2. The connector according to claim 1, wherein a center portion in the fitting direction of the finger-hanging portion is a deepest portion having a deepest depth, and the width is widest at the deepest portion.   The connector according to claim 1, wherein the finger-hanging portion is formed so as to become deeper from the both ends in the width direction toward the center portion in the width direction.   4. The connector according to claim 1, wherein both end portions in the fitting direction of the finger hanging portions are arranged symmetrically with respect to a central portion in the fitting direction. 5.   The counterpart housing is brought into a regular fitting state in which the mating housing is properly fitted with the housing by rotating the lever, and a cam groove provided in the lever is provided on an outer surface of the housing. The cam pin which can be engaged is provided, The said finger-hanging part is recessedly provided in the surface in which the said cam pin is provided, The Claim 1 thru | or 4 characterized by the above-mentioned. connector.   The housing has a cylindrical portion that is configured to open to the front, the cam pin is provided on an outer surface of the cylindrical portion, and the finger hooking portion is provided behind the cam pin in the housing. The connector according to claim 5.   The connector according to any one of claims 1 to 6, wherein the finger-hanging portion is formed in a step shape from both ends in the fitting direction toward the center in the fitting direction.   8. The connector according to claim 1, wherein an inner surface of a wall constituting the finger-hanging portion is configured to protrude toward an inner side of the housing toward a rear side. 9.

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