JP2010218880A - Electric connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric connector with an opening and closing door of a completely sealed structure, with inadvertent opening of the door prevented, and capable of stably maintaining an opened or a closed state of the door without using a member like a spring material. <P>SOLUTION: The electric connector includes a first connector 1 with a connector terminal 3 housed in a box-shape case having a flange part 2d formed, a shaft 4 arranged inside the flange part 2d, an opening and closing door 5 axially supported by the shaft in free turning, a second connector 7 equipped with a connector body having a first and a second guide formed at one of its sidewall parts. When the second connector 7 is inserted into or pulled out of the first connector 1, the opening and closing door 5 is positioned at a first guide recess and a second guide recess to be guided toward insertion or pulling out, and at the same time, barrier rib parts forming the first and the second guide recesses press the opening and closing door 5 to turn. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a small-sized electrical connector used in a personal computer, a camera, a medical device, a measuring device, and the like, and in particular, the receiving side connector is inserted into a receiving side connector housed in a box-shaped case for dust prevention. The present invention relates to an electrical connector with an opening / closing door having a sealed structure for connecting a connector and a plug-in connector.

  Japanese Utility Model Laid-Open No. 5-61975 discloses a door by pivotally supporting a pair of opening and closing doors urged in a closing direction by a torsion spring in an opening of a housing accommodating a receiving connector, and inserting the insertion connector. An electrical connector with an opening / closing door is disclosed in which the opening / closing door is closed by the spring force of a torsion spring disposed on the opening / closing door shaft when the insertion side connector is pulled open.

  Japanese Patent Application Laid-Open No. 11-8005 discloses an opening of a case that accommodates a receiving-side connector in an electrical connector that can be applied to a high voltage and a strong current that prevents an operator from accidentally touching a terminal in the connector. An insertion guide part is inserted into the insertion side connector that is inserted into the case housing the receiving side connector and is connected to the receiving side connector. When the insertion side connector is inserted into the case, the engagement projection provided on the insertion side connector and the protrusion provided on the opening / closing door of the receiving side connector are engaged to open the opening / closing door. When the pull-out connector is pulled out of the case, the open / close door is rotated in the closing direction by the engagement of the engaging protrusion provided on the plug-in connector and the protrusion provided on the open / close door of the receiving connector. Move and open An electrical connector with an opening / closing door is disclosed in which an engagement protrusion is provided at an end of the opening / closing door and a closing / opening engagement hole is provided in the case to hold the opening / closing door to hold the opening / closing state. Has been.

Japanese Utility Model Publication No. 5-61975 JP-A-11-8005

  However, the electrical connector with an open / close door disclosed in Patent Document 1 is difficult to completely prevent intrusion of dust and the like into the housing because the housing for housing the receiving connector is not completely sealed from the outside. It is. Further, since a spring means such as a torsion spring is required to urge the open / close door to the closed state, it is necessary to set the torsion spring while twisting the connector, which causes a problem that the assembling work becomes complicated. Furthermore, a spring material such as a torsion spring has a problem of fatigue deterioration as the use time and the number of uses increase.

  Since the electrical connector with an opening / closing door disclosed in Patent Document 2 does not use a spring for the opening / closing door, the problem of fatigue deterioration of the spring and the difficulty of assembly are solved. However, since the protrusion provided on the open / close door is exposed outside the case, the structure is not completely sealed. Also, in order to hold the open / close door in an open state and a closed state, it is necessary to provide an engagement protrusion at the end of the open / close door and to provide a close and open engagement hole that engages with the engagement protrusion in the case. There is no structure to seal the case. In the first place, the electrical connector disclosed in Patent Document 2 is an electrical connector that can be applied to a high voltage and a strong current, and it is a problem to be solved to prevent an operator from accidentally touching a terminal in the connector. It is not considered to prevent the intrusion of dust and the like. In addition, since the connector pin is not sealed, the connector pin housed in the case is exposed to the outside air, which may cause corrosion of the connector pin and problems such as heat generation due to contact failure due to corrosion.

  The present invention solves the problems of the prior art with a sealed structure, prevents inadvertent opening of the door, and stably opens and closes the door without using a member such as a spring material. An object of the present invention is to provide an electrical connector with a door that can be held.

  In order to solve the above problems, an electrical connector according to the present invention includes a first connector in which a connector terminal is accommodated in a box-shaped case in which a flange portion for reducing an opening is formed, and a shaft disposed inside the flange portion. And an opening / closing door pivotally supported on the shaft and having a first tooth portion and a second tooth portion formed on the shaft portion, and a connector body on which a connector terminal connected to the connector terminal of the first connector is disposed. A second connector having a first guide recess and a second guide recess formed on at least one side wall of the connector body, and when the second connector is inserted into or pulled out from the first connector, The first guide concave portion and the second guide concave portion position the first tooth portion and the second tooth portion to serve as guides for insertion or extraction, and the first guide concave portion and the second guide concave portion Wherein the partition wall demarcating rotates the door by pressing the first tooth portion and the second tooth portion in the opening or closing direction.

  In the electrical connector of the present invention, at least one elastically deformable lock member having one end fixed to the box-shaped case is disposed, and the open / close door is disposed at an end of the lock member when the open / close door is closed. It is characterized in that a lock groove for locking the is formed.

  In the electrical connector of the present invention, a protrusion is formed at the distal end of the lock member, an engagement recess is formed in the connector body, and when the first connector and the second connector are connected, the protrusion is It engages with the engaging recess.

  The electrical connector according to the present invention is characterized in that a first engagement step portion for engaging the second tooth portion is formed on an inner wall of the flange portion.

  The electrical connector of the present invention is characterized in that a second engagement step portion that engages the tip end portion of the shaft portion of the door is formed on the inner wall of the flange portion.

  The electrical connector according to the present invention is characterized in that the opening and closing doors are a pair of opening and closing doors, and opposite ends of the pair of opening and closing doors are in a comb-teeth shape engaged with each other in a closed state.

  The electrical connector according to the present invention is characterized in that an outer dimension of the first connector is within 10 mm in length and width and an outer dimension of the second connector is within 7 mm.

A first connector housing a connector terminal in a box-shaped case in which a flange portion for reducing an opening is formed; a shaft disposed inside the flange portion; and a shaft portion rotatably supported by the shaft. An opening / closing door formed with a first tooth portion and a second tooth portion, and a connector body in which a connector terminal connected to the connector terminal of the first connector is arranged, and the first at least one side wall portion of the connector body. A second connector formed with a guide recess and a second guide recess, and the first guide recess and the second guide recess when the second connector is inserted into or pulled out of the first connector. The tooth portion and the second tooth portion are positioned as a guide for insertion or extraction, and the partition portion forming the first guide concave portion and the second guide concave portion is the first tooth portion and the second tooth portion. Since the door is rotated in the opening / closing direction inside the case without using a spring material, the opening / closing door is rotated in the opening / closing direction inside the case without using a spring material. It is possible to achieve a complete sealing structure without any dust and the like. Further, since the connector pins are not exposed, contact failure due to corrosion and heat generation due to this can be prevented.
With at least one elastically deformable lock member having one end fixed to a box-shaped case, and a lock groove for locking the open / close door when the open / close door is closed at the end of the lock member The closed state of the opening / closing lid can be stably held without using a torsion spring or the like.
An engaging convex portion is formed on the lock member, an engaging concave portion is formed on a side surface of the connector body, and the engaging convex portion engages with the engaging concave portion when the first connector and the second connector are connected. With this configuration, the connection state between the first connector and the second connector can be stably maintained.
By the structure which forms the 1st engagement step part which engages with the said 2nd tooth | gear part in the inner wall of a flange part, it can function as a stopper of rotation of the opening / closing door in the closing direction.
With the configuration in which the second engagement step portion that engages the distal end portion of the shaft portion of the opening / closing door is formed on the inner wall of the flange portion, it can function as a stopper for turning the opening / closing door in the opening direction.
The opening / closing doors are a pair of opening / closing doors, and the opposite end portions of the pair of opening / closing doors are in a comb-like shape that engages with each other in the closed state, thereby shortening the rotational trajectory dimensions associated with opening / closing of the opening / closing doors. And the connector dimensions can be shortened.
An electrical connector suitable for use as a micro-size electrical connector used in personal computers, cameras, medical devices, measuring instruments, etc., with a configuration in which the external dimensions of the first connector are within 10 mm in length and width and the external dimensions of the second connector are within 7 mm It can be.

(A) (b) It is a figure which shows 1st Embodiment of the electrical connector of this invention. (A) (b) It is a figure which shows a locking member. (A) (b) It is a figure which shows a 2nd connector. (A) (b) It is a figure which shows the 1st step which inserts a 2nd connector in a 1st connector. (A) (b) It is a figure which shows the 2nd step which inserts a 2nd connector in a 1st connector. (A) (b) It is a figure which shows the 3rd step which inserts a 2nd connector in a 1st connector. (A) (b) It is a figure which shows the 4th step which inserts a 2nd connector in a 1st connector. (A) (b) It is a figure which shows the 5th step of the state which fitted the 2nd connector to the 1st connector. (A) (b) It is a figure which shows 2nd Embodiment of the electrical connector of this invention. (A) (b) It is a figure which shows 3rd Embodiment of the electrical connector of this invention.

  Embodiments of the present invention will be described with reference to the drawings. FIGS. 1A and 1B are views showing a first embodiment of the electrical connector of the present invention.

  The first connector 1 constituting the electrical connector includes a box-shaped case 2 including a bottom wall portion 2a and four side wall portions 2b, 2b, 2c, and 2c. A flange portion 2d extending at right angles from the four side wall portions 2b, 2b, 2c, and 2c is formed at the tip opening portion of the box-shaped case so as to reduce the opening portion. The box-shaped case 2 is formed of an insulating synthetic resin or the like. The male connector terminal 3 is disposed on the bottom wall portion 2 a of the box-shaped case 2 of the first connector 1. In this embodiment, the male connector terminal 3 is disposed, but the female connector terminal may be disposed in the box-shaped case 2.

  A shaft 4 extending horizontally inside the flange portion 2 d of the box-shaped case 2 is arranged with its both ends fixed to the side wall portions 2 c and 2 c of the box-shaped case 2. In the first embodiment, since there are two doors 5, two shafts 4 are arranged in parallel. The shaft 4 is formed of an insulating synthetic resin or the like.

  An opening / closing door 5 is pivotally supported on each of the two shafts 4. The opening / closing door 5 is integrally formed with a shaft portion 5 a that is pivotally supported on the shaft 4. The distal end portion 5f of the shaft portion 5a is formed such that the outer dimension in a free state before being attached to the first connector 1 is slightly larger than the inner diameter dimension of the side wall portion 2b of the first connector 1. On the inner wall of the flange portion 2d of the box-shaped case 2, a curved surface portion that guides the rotation of the shaft portion 5a and a second engagement step portion 2f that engages the tip portion 5f of the shaft portion 5a are formed. Therefore, the front end portion 5f rotates while pressing the curved surface portion, and when the front end portion 5d of the shaft portion 5a is engaged with the second engagement step portion 2f, the opening / closing door 5 becomes the shaft of the first connector 1. Parallel to the direction, it is confirmed that the female connector terminal is completely connected to the male connector terminal. On the other hand, a first tooth portion 5b and a second tooth portion 5c are formed on the shaft portion 5a so as to protrude outward from the surface of the shaft portion 5a. On the inner wall of the flange portion 2d of the box-shaped case 2, a curved surface portion that guides the rotation of the shaft portion 5a and a first engagement step portion 2e that engages the second tooth portion 5c formed on the shaft portion 5a are formed. The When the door 5 is in the closed state, the second tooth portion 5c formed on the shaft portion 5a of the door 5 is engaged with the first engagement step portion 2e, and the stopper that limits the rotation of the door 5 in the closing direction. Function as. The opening / closing lid 5 is formed of an insulating synthetic resin or the like.

  Comb-like end portions 5d are formed at opposite ends of a pair of opening / closing doors 5 pivotally supported by the two shafts 4 respectively. When the open / close door 5 is closed, the comb-like end portions 5d of the pair of open / close doors 5 mesh with each other to close the opening of the box-shaped case 2 in a sealed state. The pair of opening / closing doors 5 have comb ends 5d as opposed ends, so that the radius of the turning trajectory accompanying opening / closing of the opening / closing door 5 can be reduced. Since the space for preventing interference with the terminal 3 can be reduced, the electrical connector can be made compact.

  2A and 2B are views showing the lock member 6 arranged in the box-shaped case 2. FIG.

  The lock member 6 is a member having one end fixed to the bottom wall 2 a of the box-shaped case 2 and extending along the side wall 2 c in the direction of the opening of the box-shaped case 2. The lock members 6 may be arranged on the top and bottom, respectively, or one on either the top or bottom. The lock member 6 is formed of an insulating synthetic resin that can be elastically deformed. A protruding portion 6c that protrudes inward of the first connector 1 is formed at the distal end of the lock member 6, and a lock groove 6a that locks the pair of open / close doors 5 in the closed state when the open / close door 5 is closed. It is formed. Further, a convex portion 6 b that partitions the lock groove 6 a is formed in the vicinity of the lock groove 6 a of the lock member 6.

  FIGS. 3A and 3B are views showing the second connector 7 connected to the first connector 1 having the box-shaped case 2.

  The second connector 7 includes a connector body 7 a that is inserted from the opening of the box-shaped case 2 and connected to the first connector 1. A female connector terminal (not shown) connected to the male connector terminal 3 of the first connector 1 is accommodated in the connector body 7a. An insertion portion of the connector body 7a into the box-shaped case 2 is configured by a member having a rectangular section including four side wall portions 7b, 7b, 7c, and 7c. A guide hole 7j for inserting and guiding the male terminal 3 accommodated in the first connector 1 is formed in the distal end surface of the connector body 7a. The size of the cross section of the insertion portion of the connector body 7 a into the box-shaped case 2 is made slightly smaller than the size of the opening of the box-shaped case 2.

  A first guide concave portion 7d and a second guide concave portion 7e are formed on the side wall portions 7b and 7b of the second connector 7 from the distal end portion in the insertion direction. A portion that divides the distal end of the connector body 7a in the insertion direction and the first guide recess 7d is referred to as a first partition 7f, and a portion that partitions the first guide recess 7d and the second guide recess 7e is referred to as a second partition 7g. An engagement recess 7h is formed in the side wall 7c where the first guide recess 7d and the second guide recess 7e are not formed in the connector body 7a. When the lock member 6 is vertically arranged in the first connector 1, the engaging recess 7h is formed in the upper and lower side wall portions 7c and 7c, respectively. The connector body 7a is formed of an insulating synthetic resin or the like.

  FIGS. 4A, 4B to 8A, 8B are diagrams showing stages for connecting the second connector 7 to the first connector 1 of the first embodiment.

  FIGS. 4A and 4B are diagrams showing a stage before the second connector 7 is connected to the first connector 1. As shown in FIG. 4B, the open / close door 5 is engaged with the lock groove a of the lock member 6 and locked in the closed state.

  FIGS. 5A and 5B are diagrams showing a stage where the second connector 7 starts insertion from the opening of the box-shaped case 2 of the first connector 1. At this stage, the tip end portion of the first partition wall portion 7 f of the connector body 7 a of the second connector 7 starts to press the pair of opening / closing doors 5. As shown in FIG. 5 (b), the protrusion 6 c formed at the tip of the lock member 6 is pressed by pressing the tip of the first partition wall 7 f of the second connector, and the tip of the lock member 6 is pressed. Is elastically deformed in the direction of the side wall 2c of the first connector 1, and as a result, the pair of open / close doors 5 starts to be detached from the lock groove 6a of the lock member 6.

  FIGS. 6A and 6B are diagrams showing a stage where the second connector 7 is further inserted into the box-shaped case 2 of the first connector 1. At this stage, the pair of open / close doors 5 completely separate from the lock groove 6 a of the lock member 6. The first tooth portion 5b formed on the shaft portion 5a of the open / close door 5 is located in the first guide recess 7d formed on the side wall portion 7c of the second connector 7.

  7A and 7B are views showing a state in which the first guide recess 7d side portion of the second partition wall portion 7g of the second connector 7 is engaged with the first tooth portion 5b. A portion of the second partition wall portion 7g on the first guide recess 7d side presses the first tooth portion 5b to rotate the open / close door 4 in the opening direction. At this stage, the second tooth portion 5c is positioned in the second guide recess 7e.

  FIGS. 8A and 8B are diagrams showing a stage where the fitting of the second connector 7 to the first connector 1 is completed. At this stage, the first tooth portion 5b and the second tooth portion 5c are located in the second guide recess 7e. The protrusion 6c formed at the tip of the lock member 6 engages with the engagement recess 7h formed in the side wall 7c of the connector body 7a of the second connector 7, and the connection state between the first connector 1 and the second connector 7 is determined. Hold.

  The step of pulling out the second connector 7 from the box-shaped case 2 of the first connector 1 will be described. When a pulling direction force is applied to the second connector 7 from the connection state of the first connector 1 and the second connector 7 shown in FIGS. 8A and 8B, the second connector 7 is formed on the side wall portion 7c of the connector body 7a. At the same time as the engagement between the engaged recess 7h and the protrusion 6c formed at the tip of the lock member 6 is released, the tip 5f of the shaft 5a is detached from the second engagement step 2f. In the first tooth portion 5b and the second tooth portion 5c located in the second guide recess portion 7e, first, the second tooth portion 5c engages with the second guide recess portion 7e portion of the second partition wall portion 7g, and the second partition wall portion. The second guide recess 7e of 7g is pressed and rotated in the closing direction.

  As the rotation in the closing direction proceeds, the first tooth portion 5b is positioned in the first guide recess 7d and engages with the portion of the first partition wall portion 7f on the first guide recess 7d side. The first tooth portion 5b is pressed by the portion of the first partition wall portion 7f on the side of the first guide recess 7d and rotates the door 5 in the closing direction. When the first tooth portion 5b is disengaged from the first guide recess 7d and the second tooth portion 5c is engaged with the first engagement step portion 2e formed on the flange portion 2d, the opening / closing door 5 is rotated in the closing direction. The comb-like end portions 5d of the pair of opening / closing doors 5 are engaged with each other, and the opening of the box-shaped case 2 is sealed and closed. In this state, the pair of open / close doors 5 is engaged with the lock groove 6a of the lock member 6, and the pair of open / close doors 5 are locked in the closed state. Further, as described above, if the distal end portion 5f of the shaft portion 5a is rotated while pressing the curved surface portion, the pulling force rapidly decreases even after the male and female connector terminals are separated from each other. The male and female connectors can be pulled out smoothly without any problems.

  FIGS. 9A and 9B are views showing a second embodiment of the electrical connector of the present invention.

  In the electrical connector according to the second embodiment, a pair of opening / closing doors 5 is rotatably disposed in the opening of the box-shaped case 2 of the first connector 1. Engagement step portions 5e are formed at opposite ends of the pair of opening / closing doors 5 pivotally supported by the two shafts 4, respectively, and the pair of opening / closing doors 5 are closed. The engaging step 5e is engaged to improve the sealing function. Since other configurations are the same as those of the electrical connector of the first embodiment, description thereof is omitted.

  FIGS. 10A and 10B are views showing a third embodiment of the electrical connector of the present invention.

  In the electrical connector according to the third embodiment, one opening / closing door 5 is rotatably disposed in the opening of the box-shaped case 2 of the first connector 1. Since there is one door 5, the first guide recess 7 d, the second guide recess 7 e, the first partition 7 f and the second partition 7 g formed on the side wall 7 b of the connector body 7 a of the second connector 7 5 is formed only on one side wall portion 7b on the rotating portion side. Since other configurations are the same as those of the electrical connector of the first embodiment, description thereof is omitted.

  As described above, according to the electrical connector of the present invention, it is possible to prevent intrusion of dust and the like with a completely sealed structure, prevent inadvertent opening of the open / close door, and stably open and close without using a member such as a spring material. The door can be kept open or closed.

  1: first connector, 2: box-shaped case, 2a: bottom wall, 2b, 2c: side wall, 2d: flange, 2e: first engagement step, 2f: second engagement step, 3: Male terminal, 4: shaft, 5: open / close door, 5a: shaft portion, 5b: first tooth portion, 5c: second tooth portion, 5d: comb tooth-shaped end portion, 5e: engagement step portion, 5f: shaft portion 6a: lock groove, 6b: protrusion, 6c: protrusion, 7: second connector, 7a: connector body, 7b, 7c: side wall, 7d: first guide recess, 7e : Second guide recess, 7f: first partition, 7g: second partition, 7h: engagement recess, 7j: guide hole

Claims (7)

A first connector in which a connector terminal is accommodated in a box-shaped case in which a flange portion for reducing an opening is formed;
A shaft disposed inside the flange portion;
An opening / closing door pivotally supported on the shaft and having a first tooth portion and a second tooth portion formed on the shaft portion;
A second connector having a connector body in which a connector terminal connected to a connector terminal of the first connector is disposed, and having a first guide recess and a second guide recess formed in at least one side wall of the connector body;
With
When the second connector is inserted into or pulled out from the first connector, the first tooth portion and the second tooth portion are positioned in the first guide recess and the second guide recess to serve as an insertion or extraction guide. In addition, the partition portion forming the first guide recess and the second guide recess presses the first tooth portion and the second tooth portion to rotate the open / close door in the opening direction or the closing direction. Electrical connector. At least one elastically deformable lock member having one end fixed to the box-shaped case is disposed, and a lock groove for locking the open / close door is formed at an end of the lock member when the open / close door is closed. The electrical connector according to claim 1. A protrusion is formed at the tip of the lock member, an engagement recess is formed in the connector body, and the protrusion engages with the engagement recess when the first connector and the second connector are connected. The electrical connector according to claim 1 or 2. The electrical connector according to any one of claims 1 to 3, wherein a first engagement step portion that engages the second tooth portion is formed on an inner wall of the flange portion. 5. The electrical connector according to claim 1, wherein a second engagement step portion that engages a tip end portion of the shaft portion of the opening / closing door is formed on an inner wall of the flange portion. The said opening / closing door is made into a pair of opening / closing door, and it is set as the comb-tooth shape which mutually engages in the closed state the opposing edge part of the said pair of opening / closing door. Electrical connector. 7. The electrical connector according to claim 1, wherein an outer dimension of the first connector is within 10 mm in length and width, and an outer dimension of the second connector is within 7 mm.

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