JP4014168B2 - connector - Google Patents

Description

  The present invention relates to a connector connected to an object to be connected such as a card, and more specifically, to a connector having a robust structure that can reliably engage and disengage from the object to be connected.

  A push-push type card connector using a conventional heart cam will be described (for example, see Patent Document 1).

  8 is an exploded perspective view of the connector, FIG. 9 is a perspective view showing a state before the card is inserted into the connector, and FIGS. 10A to 10E sequentially show the process of inserting and ejecting the card from the connector. FIG. 11 is a perspective view showing the process of the guide pin of the cam follower guided by the cam groove of the heart cam in the connector.

  The connector 31 includes an insulator 32, a plurality of contacts 33 fixed to the insulator 32, an eject bar 34 attached to the frame portion 32a of the insulator 32, and a compression coil spring 35 that constantly urges the eject bar 34 in the discharging direction. And a cam follower 36 guided by a heart cam 34c formed on the eject bar 34. The card 41 is inserted into the connector 31 and discharged from the connector 11.

  The individual parts will be described in detail. The insulator 32 is manufactured from a synthetic resin in a substantially rectangular shape, and U-shaped frame portions 32a, 32b, and 32c are formed on three sides thereof. Each contact 33 has a convex curved contact portion 33a on one end side and a flat contact portion 33b on the other end side. The eject bar 34 is manufactured in a substantially L shape from metal, and has a guide portion 34a and a right-angle bent portion 34b. A heart cam 34c is formed on one surface of the guide portion 34a, and the card holder of the right-angle bent portion 34b is formed. The leading end of the card 41 comes into contact with the contact portion 34d. The guide part 34a of the eject bar 34 is slidably accommodated in a groove (not shown) having a U-shaped cross section formed in the frame part 32a, and is compressed in a groove 34e formed on one surface of the guide part 34a. A spring 35 is inserted. One end of the compression coil spring 35 is in pressure contact with the eject bar 34, and the other end is in pressure contact with the inner surface of the frame portion 32c. Therefore, the eject bar 34 is always urged by the compression coil spring 35 in the direction of ejecting the card 41 from the connector 31. The cam follower 36 is formed in a lever shape, and is disposed in a notch 32d formed outside the frame portion 32a so as to be rotatable by a predetermined angle. A hole 36a formed in the base portion of the cam follower 36 fits into a shaft 32e formed in the frame portion 32a, and a guide pin 36b bent at the tip end portion of the cam follower 36 is provided in the frame portion 32a. Through the hole (not shown), it engages with the cam groove of the heart cam 34c.

  The entire connector 31 is covered with a rectangular cover (not shown).

  Details of the heart cam 34c of the eject bar 34 will be described with reference to FIG. A heart cam 34 c is formed on one surface of the guide portion 34 a of the eject bar 34. The heart cam 34 c includes a starting point circle 1 of the guide pin 36 b of the cam follower 36, a guide part circle 2 inclined with respect to the sliding direction of the eject bar 34, a heart-shaped recess circle 3, and the eject bar 34. The guide part circle 4 parallel to the sliding direction and the end point circle 5 of the guide pin 36b, that is, the starting point circle 1, constitute a circular guide rail (cam groove). In the free state, the guide pin 36b is urged rightward in FIG. 11 by the elasticity of the cam follower 36.

  Insertion and ejection of the card 41 from the connector 31 will be described with reference to FIGS. 10 and 11.

  First, FIG. 10A shows a free state in which a part of the card 41 is inserted into the connector 31. In FIG. 11, the guide pin 36b of the cam follower 36 is positioned at the starting point circle 1 of the heart cam 34c. To do.

  Next, in FIG. 10B, the card 41 and the eject bar 34 are integrated by pushing the card 41 inward of the connector 31 and the front end of the card 41 abutting against the card abutting portion 34d of the eject bar 34. Thus, it is in the middle of sliding into the connector 31 while resisting the compressive force of the compression coil spring 35. In FIG. 11, the guide pin 36b is located in the guide portion circle 2 that is inclined with respect to the sliding direction of the eject bar 34 in the heart cam 34c.

  Subsequently, when the card 41 is pushed to the maximum stroke and then the push is stopped, the card 41 and the eject bar 34 are slightly returned by the restoring force of the compression coil spring 35 to reach the state shown in FIG. . FIG. 10C shows a fitting state in which a plurality of pads (not shown) of the card 41 are in contact with the convex curved contact portions 33a of the plurality of contacts 33. In FIG. 11, the guide pin 36b is a heart cam. It is immersed in the heart-shaped recess circle 3 of 34c. Thus, the fitting operation of the card 41 is completed.

  When the push is stopped after the card 41 is pushed again to the maximum stroke, in FIG. 11, the guide pin 36b escapes from the heart-shaped recess circle 3 of the heart cam 34c and moves in the sliding direction of the eject bar 34. The end point circle 5, that is, the starting point circle 1 is reached via the parallel guide portion circle 4. The card 41 and the eject bar 34 reach the state shown in FIG. 10E through the state shown in FIG. 10D due to the restoring force of the compression coil spring 35. Thus, the card 41 ejection operation is completed.

  A push-push type card connector using this type of heart cam is also described in other documents (for example, see Patent Documents 2 and 3).

JP 2001-267013 A (2nd page, 2nd column, 34th line-3rd page, 4th column, 21st line, FIG. 1-4) JP 2001-52812 A JP 2004-178815 A

  In the conventional card connector, the cam follower is processed from a thin sheet metal, but there is no particular difference from that processed from a wire rod. Therefore, it is difficult to expect improvement in machining accuracy and increase in rigidity.

  Accordingly, the present invention aims to provide a connector having a robust structure, which can improve the drawbacks of the conventional card connector and can reliably engage and disengage the connection object.

  The present invention employs the following means in order to solve the above problems.

  1. In a connector that is fitted and detached from the connection object 11 and includes an ejection mechanism, the ejection mechanism constantly urges the ejection bar that moves together with the connection object and the ejection bar in the direction in which the connection object is detached. And a cam follower rotatably held by the eject bar, and a cam for guiding the engaged portion 6a1 of the cam follower, the cam follower integrally including an actuator portion, and the actuator The part has an elastically deformable main body part 6b3 and an abutting part 6b4, and the connector has an abutted part 10a that abuts against the abutting part. When the abutting portion and the abutted portion abut, the main body portion is elastically deformed to give a rotational force to the cam follower, and the cam follower Connector engagement portion is guided by the cam.

  2. The cam follower is manufactured from a metal plate, the actuator part has an engaging part, the connection target has an engaged part that engages with the engaging part, and the connection target is When fitting, the contact portion of the actuator portion and the contacted portion of the connector contact each other, whereby the main body portion of the actuator portion is elastically deformed so that the engagement portion and the engaged portion are 2. The connector according to 1, wherein the connection object is locked by being engaged.

  As is apparent from the description of the specification, the present invention has the following effects.

  1. In the eject mechanism, the cam follower has an actuator part and is held rotatably on the eject bar, so the structure is simple and robust, so that it can be securely engaged and disconnected from the connection object. Can do.

  2. Since the eject bar and the cam follower are configured only by a simple punching process and a bending process, they are easy to manufacture and the cost is low.

  3. Since the actuator main body is elastically deformable, the engaged portion of the cam follower is reliably guided by the cam.

  4). When the connection object is fitted, the engaging part of the actuator part and the engaged part of the connection object are engaged, so that the connection object is prevented from being removed from the connector.

  A push-push type card connector using a heart cam according to an embodiment of the present invention will be described.

  A first embodiment of the present invention will be described with reference to FIGS.

  1A is a perspective view of the card connector 1 before the card 11 is inserted, FIG. 1B is an enlarged perspective view of the card connector 1, and FIG. 1C is an enlarged exploded view of the card connector 1. A perspective view is shown respectively.

  A plurality of contacts 3 are held in a row in the heat-resistant housing 2, and the eject bar 4 is attached so as to be urged by a coil spring 5 in a direction in which the card 11 is ejected from the card connector 1. . The cam follower 6 is made of a metal plate and is rotatably held by the eject bar 4. Furthermore, switches 7 and 8 for detecting insertion / ejection of the card 11 are attached to the housing 2, and a friction brake 9 is attached to prevent the card 11 from jumping out vigorously. The housing 2 is covered with a cover 10 after the various components are accommodated.

  FIG. 2 is a perspective view showing an assembled state in which the cam follower 6 is rotatably held by the eject bar 4 slidably attached to the housing 2.

  3A is a perspective view of the cam follower 6 as viewed from the front side, and FIG. 3B is a reduced perspective view of the cam follower 6 as viewed from the back side.

  A bent tip 6a1 is formed on one end side of the cam follower 6, and a gourd-shaped hole 6a2 is provided on the other end side. Further, the cam follower 6 has an actuator portion 6b integrally. The actuator portion 6b is configured integrally with a fixed end 6b1 fixed to the cam follower 6, a substantially inverted V-shaped convex portion 6b2, an elastically deformable main body portion 6b3, and a support end 6b4. .

  FIG. 4 is a perspective view of the eject bar 4. The eject bar 4 is formed with a shaft portion 4a bent upward at the center, and an abutting portion 4b with which the coil spring 5 abuts slightly on the front portion of the shaft portion 4a. The abutting part 4c with which the tip of the card 11 abuts is formed by bending leftward.

  When the hole 6a2 of the cam follower 6 is rotatably fitted to the shaft portion 4a of the eject bar 4, the state shown in FIG.

  FIG. 5 is a perspective view of the main part of the housing 2. A heart cam 2 a is formed on the right side of the housing 2. When the card 11 is inserted into the card connector 1, the tip 6a1 of the cam follower 6 engages with the recess 2a1 of the heart cam 2a, so that the cam follower 6 is locked to the heart cam 2a.

  FIG. 6 is a perspective view of the cover 10 as viewed from the inside. On the inner right side of the cover 10, a support portion 10a for supporting the support end 6b4 of the actuator portion 6b when the card 11 is inserted into the card connector 1 is formed by cutting and raising.

  FIG. 7 is a front view of the main part showing the state change from the ejected state of the card 11 to the fitted (inserted) state.

  The state a is a card 11 ejection state. When the card 11 is inserted into the card connector 1 with fingers, the tip of the card 11 presses the abutting portion 4c of the eject bar 4. Then, as shown in state b, since the eject bar 4 slides along the right side surface of the housing 2, the cam follower 6 moves together with the eject bar 4. Further, when the eject bar 4 slides, the support end 6b4 of the elastically deforming actuator portion 6b rides on the support portion 10a of the cover 10 as shown in the state c. Therefore, the cam follower 6 is given a rotational moment in the direction of the arrow, and the tip 6a1 of the cam follower 6 is guided by the heart cam 2a to reach the state d.

  Thereafter, when the finger is released from the rear end of the card 11, the eject bar 4 slightly returns due to the reaction force of the coil spring 5, as shown in the state e, and the tip 6a1 of the cam follower 6 is recessed in the recess 2a1 of the heart cam 2a. Therefore, the cam follower 6 is locked to the heart cam 2a. At this time, the actuator portion 6b has a double-supported beam spring structure in which the fixed end 6b1 and the support end 6b4 are fixed portions, so that the convex portion 6b2 reliably engages with the concave portion 11a of the card 11. In the state e, that is, the card fitting state, the card 11 is prevented from being removed from the card connector 1.

  In state e, when the rear end of the card 11 is pushed with fingers, the tip 6a1 of the cam follower 6 escapes from the recess 2a1 of the heart cam 2a and is guided by the heart cam 2a, and the reaction force of the coil spring 5 causes the eject bar 4 and cam The follower 6 and the card 11 reach state a. In this state, most of the convex portions 6b2 of the actuator portion 6b are removed from the concave portions 11a of the card 11, so that the card 11 can be easily removed from the card connector 1.

BRIEF DESCRIPTION OF THE DRAWINGS It is various drawings of the connector for cards of Example 1 of this invention, (A) is a perspective view of the connector before a card | curd is inserted, (B) is an enlarged perspective view of the connector, (C) is the connector Are respectively enlarged exploded perspective views. It is a perspective view of the assembly state of the eject bar and cam follower in the connector. It is the perspective view of the cam follower, (A) is a perspective view seen from the front side, (B) shows a reduced perspective view seen from the back side, respectively. It is a perspective view of the eject bar. It is a perspective view of the principal part of the housing in the connector. It is the perspective view seen from the inner side of the cover in the connector. It is a front view of the principal part which shows sequentially the state change from the discharge state of the card | curd with respect to the connector to a fitting (insertion) state. It is a disassembled perspective view of the conventional card connector. It is a perspective view of a state before a card is inserted in the connector. It is a perspective view which shows the process of insertion and discharge | emission of the card | curd with respect to the connector sequentially from (A)-(E). It is a perspective view which shows the process of the guide pin of the cam follower guided by the guide rail (cam groove) of the heart cam in the connector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Card connector 2 Housing 2a Heart cam 2a1 Concave 3 Contact 4 Eject bar 4a Shaft part 4b Abutting part 4c Abutting part 5 Coil spring 6 Cam follower 6a1 Tip 6a2 Hole 6b Actuator part 6b1 Fixed end 6b4 Main part 6b3 Main part 6b3 End 7 Switch 8 Switch 9 Friction brake 10 Cover 10a Support part 11 Card 11a Recess

Claims (2)

In the connector with the eject mechanism, the mating with the connection object is released.
The eject mechanism includes: an eject bar that moves together with the connection object; a spring that constantly urges the eject bar in a direction in which the connection object is detached; a cam follower that is rotatably held by the eject bar; A cam for guiding the engaged portion of the cam follower,
The cam follower has an actuator part integrally, the actuator part has an elastically deformable main body part and a contact part,
The connector has a contacted portion that contacts the contact portion;
When the connection object is fitted, the abutment portion and the abutted portion abut against each other, whereby the main body portion is elastically deformed to give a rotational force to the cam follower, and the cam follower is engaged. The connector is characterized in that the joint portion is guided by the cam. The cam follower is manufactured from a metal plate,
The actuator part has an engaging part,
The connection object has an engaged portion that engages with the engaging portion,
When the connection object is fitted, the abutting portion of the actuator portion and the abutted portion of the connector abut on each other, so that the main body portion of the actuator portion is elastically deformed, and the engaging portion and the abutted portion are connected. The connector according to claim 1, wherein the connection object is locked by engaging with the engaging portion.

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