JP4890994B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic device, and more particularly to an electronic device that electrically connects a connector mounted on a circuit board accommodated in a case and an external mating connector.

Conventional electronic devices have a structure in which a circuit board on which a connector is mounted is attached to a case. For example, in a case-integrated connector as an electronic apparatus disclosed in Patent Document 1, a connector portion that is electrically connected to a mating connector is held in the case portion. The case portion is formed with a receiving port for receiving the mating connector corresponding to the connector portion, and the case portion cooperates with the waterproof seal portion of the mating connector to obtain a waterproof action therebetween. The seal part is integrated. And the connector part has an electroconductive contact (terminal) and the insulator part which fixed this.
Japanese Patent Laid-Open No. 7-263069

  However, in the electronic device described above, the terminal of the connector was soldered and mounted in a state of being fitted into the through-hole hole of the circuit board, so that the load generated when the mating connector is inserted and removed is transmitted to the board connection part, There was a risk of solder cracks and poor contact. Further, in the case-integrated connector shown in the cited document 1 described above, the case and the insulator portion are separate members, and the load on the key portion is likely to increase, so there is a risk of breakage.

  In addition, when the terminal of the connector part is mounted on the circuit board by surface mount technology (SMT), that is, when the terminal is reflow soldered to the board that does not open the through hole, the terminal is applied. The risk of contact failure was increased by the load.

  Therefore, in view of the above-described problems, an object of the present invention is to provide an electronic device that can reduce the load applied to the connector terminal and improve the connection reliability.

In order to solve the above-mentioned problems, an electronic apparatus according to claim 1, wherein the electronic device according to the present invention has a case having a receiving port for receiving a mating connector, a circuit board disposed in the case, and the receiving port. An electronic device having a connector mounted on the circuit board and removably connected to the mating connector, wherein the case integrally integrates the mating connector with the circuit board and the connector mounted on the circuit board. Holding means for movably holding in the insertion / removal direction and a restriction recess for restricting movement of the circuit board in the insertion / removal direction, wherein the circuit board has a shape equivalent to the shape of the restriction recess and the restriction The circuit has a recess formed larger than the recess, and the circuit board is brought into contact with the recess of the circuit board and the restriction recess of the case at a predetermined position. Characterized by being adapted to restrict the movement in the insertion and removal direction of the plate.

  According to the electronic device of the present invention described in claim 1, the circuit board and the connector mounted on the circuit board are held in the case so that the circuit board and the connector mounted on the circuit board can be moved integrally in the insertion / removal direction of the mating connector. Therefore, it is possible to reduce the load generated when the connector is connected to the mating connector transmitted to the connection portion between the connector and the circuit board.

  According to a second aspect of the present invention, there is provided the electronic device according to the first aspect, wherein the holding means is formed in the case to restrict movement of the connector in the insertion / removal direction. It is characterized by having a movement restricting wall.

  According to the electronic device of the present invention described in claim 2, when the connector is moved in the insertion / removal direction by the holding means, the movement is restricted by the movement restriction wall formed in the case. The load that occurs sometimes can be released from the connector to the case.

  Invention of Claim 3 made | formed in order to solve the said subject WHEREIN: In the electronic device of Claim 1 or 2, the said holding means is a slide hole extended in the said insertion / extraction direction formed in the said circuit board, And an engaging portion that is formed in the case and is slidably engaged with the slide hole.

  According to the electronic device of the present invention described in claim 3, the circuit board is slidably engaged with the sliding portion of the case and the case is slid in the insertion / removal direction. Even if it is moved, rattling can be prevented by the engagement between the slide hole and the engaging portion.

  As described above, according to the electronic device of the present invention described in claim 1, the circuit board and the connector mounted on the circuit board can be integrally moved in the insertion / removal direction of the mating connector by the holding means. Since the load generated when the connector is connected to the mating connector transmitted to the connection part between the connector and the circuit board can be reduced, the load on the connector terminal can be reduced and the connector and the circuit board can be reduced. Connection reliability can be improved. Therefore, it is possible to easily cope with surface mounting and multipolarization of the connector, and to absorb variations in the connector due to thermal expansion, thermal contraction, etc. of the connector.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, when the connector is moved in the insertion / removal direction, the movement is regulated by the movement regulating wall formed in the case. Therefore, since the load generated when the mating connector is inserted and removed can be released from the connector to the case, the load generated when the mating connector is transferred to the connection portion between the connector and the circuit board can be further reduced.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the engaging portion of the case is slidably engaged with the slide hole of the circuit board so that the circuit board is inserted and removed. Since the circuit board can be prevented from rattling due to the engagement between the slide hole and the engagement portion, it is possible to prevent the generation of abnormal noise even if vibration is transmitted to the electronic device. Can do.

  Hereinafter, an embodiment of an electronic apparatus according to the present invention will be described with reference to the drawings of FIGS. 1 to 5, the X axis indicates the width direction, the Y axis indicates the insertion / removal direction, and the Z axis indicates the vertical direction.

  An electronic device 1 shown in FIG. 1 includes a rectangular box-shaped case 2, a circuit board 3 disposed in the case 2, and a plurality (three in FIG. 1) of connectors 4 mounted on the circuit board 3. And have. The electronic device 1 is configured to maintain watertightness (waterproofness) when a female connector which is the mating connector 50 is connected.

  Case 2 is formed of a metal member, synthetic resin, or the like. The case 2 has a plate case 21 and an outer case 22. The case 2 is assembled in a rectangular box shape by fitting the plate case 21 and the outer case 22 and fixing with a screw or the like (not shown). That is, the case 2 is divided into a plate case 21 and an outer case 22.

  The plate case 21 includes a bottom plate portion 211 formed in a rectangular flat plate shape, a standing portion 212 standing from the bottom plate portion 211, and a member protruding from the surface of the bottom plate portion 211 and engaging with a slide groove of the circuit board 3. It has a joint part 213 and a convex part 214 that restricts movement of the circuit board 3 in the insertion / removal direction.

  The bottom plate portion 211 is formed in the same shape as the outer shape of the outer case 22. The bottom plate portion 211 has screw holes 215 at the four corners for screwing to the outer case 22.

  The standing portion 212 is accommodated from the opening of the outer case 22 and is formed to be slightly smaller than the opening. The circuit board 3 is movably disposed above the standing portion 212, that is, the circuit board 3 is formed smaller than the circuit board 3 in consideration of the movement amount of the circuit board 3. A planar portion 216 is formed at the corner on the front side (front side in FIG. 1) of the standing portion 212, and the corner of the circuit board 3 is disposed on the upper surface of the planar portion 216.

  The engaging portion 213 is formed in a cylindrical projection shape so as to be higher than the standing portion 212. That is, it is formed so as to penetrate the circuit board 3 disposed in the standing portion 212 and is configured to be slidably engaged with the slide hole of the circuit board 3. The engaging portion 213 is formed to have a diameter equivalent to the width of the slide hole so as to prevent the circuit board 3 from moving in the lateral direction and to allow movement only in the insertion / removal direction by being engaged with the slide hole. Has been.

  The convex portion 214 is formed as a part of the standing portion 212 and protrudes in a step shape toward the inside of the case 2 in the width direction. The convex part 214 has substantially the same shape as the concave part formed in the circuit board 3 and the outer case 22.

  The outer case 22 has an outer case main body 221. The outer case main body 221 is formed in a substantially lid shape, and is fitted into the standing portion 212 of the plate case 21 to form an accommodation space surrounded by the inner surface of the outer case 22 and the bottom plate portion 211. ing. The outer case main body 221 regulates the movement of the circuit board 3 in the insertion / removal direction, the housing portion 222 that houses the plurality of connectors 4, the plurality of receiving ports 223 that are formed in the housing portion 221 and receive the mating connector 50. And a restriction recess 224.

  The accommodating part 222 has a first movement restriction wall 225 and a second movement restriction wall 226. The first movement restriction wall 225 and the second movement restriction wall 226 are formed in the housing portion 222 so as to correspond to a plurality (three in FIG. 1) of the connectors 4.

  When the first movement restriction wall 225 is moved in the insertion direction (direction toward the inside of the case) in accordance with the insertion of the mating connector 50, the first movement restriction wall 225 abuts against the side surface on one side of the connector 4 to restrict the movement. It is formed in a wall shape standing from the inner surface of the accommodating portion 222 toward the inside of the case 2. When the second movement restriction wall 226 is moved in the extraction direction (direction toward the outside of the case) in accordance with the extraction of the mating connector 50, the second movement restriction wall 226 abuts against the other side surface of the connector 4 to restrict the movement. The inner surface of the accommodating portion 222 is formed as a stepped portion that continues to the receiving port 223.

  Therefore, the first movement restriction wall 225 and the second movement restriction wall 226 function as holding means in the claims, and the outer case surrounded by the first movement restriction wall 225 and the second movement restriction wall 226. The inner wall 22 is a housing portion 23 for the connector 4. And the accommodating part 23 hold | maintains the connector 4 so that the movement to the insertion / extraction direction of the other party connector 50 is hold | maintained, and between the 1st movement control wall 225 and the 2nd movement control wall 226 is the connector 4 (circuit board 3). It is a movable range. In addition, the accommodating portion 23 has a gap between the upper peripheral wall 43 of the connector 4 and the inner wall of the outer case 22, so that the movement of the connector 4 is not hindered.

  The receiving port 223 is formed in a shape corresponding to the shape of the mating connector 50 so as to correspond to one or a plurality of connectors 4. The receiving port 223 is integrally provided with a shield member (not shown) for providing waterproofness between the receiving port 223 and the mating connector 50 on the entire inner peripheral surface thereof. The restriction recess 224 is formed on both sides of the outer case main body 221 in a shape equivalent to the recess of the circuit board 3 described later and smaller than the recess.

  The circuit board 3 is formed in a flat plate shape using, for example, a flexible board or a printed board. Although not shown, the circuit board 3 has a wiring pattern formed on the surface thereof and can be electrically connected to the terminals of the connector 4. The circuit board 3 has slide holes 31 formed in the vicinity of both rear corners and extending in the insertion / removal direction. The slide hole 31 is formed in the circuit board 3 as a groove-like through hole, and the length of the slide hole 31 is a movement range of the circuit board 3.

  The circuit board 3 is formed so that the concave portions 32 are formed on both sides thereof in the same shape as the regulating concave portion 224 of the outer case 22 and larger than the regulating concave portion 224. That is, the movement of the circuit board 3 in the insertion / removal direction is regulated by bringing the concave part 32 of the circuit board 3 and the regulation concave part 224 of the outer case 22 into contact with each other at a predetermined position. Therefore, the lengths of the restricting recess 224 and the recess 32 are designed to correspond to the movement range of the circuit board 3.

  As shown in FIG. 3, the connector 4 includes a connector base 41 and a plurality of terminals 42 erected from the connector base 41 toward the mating connector 50. In the best mode, the case where three connectors 4 are mounted on the circuit board 3 will be described. However, since the basic configuration thereof is the same, the connector 4 shown in FIG. Only the configuration will be described.

  The connector base 41 is formed in a substantially box shape with a synthetic resin or the like, and has a peripheral wall 43. The peripheral wall 43 covers a plurality of terminals 42 provided by insert formation or the like and forms an opening 44.

  As described above, the plurality of terminals 42 are formed in a predetermined shape using a metal plate material, a composite member, or the like. Each of the terminals 42 is formed in a substantially L shape, and one end side faces the mating connector 50 as described above, and the other end side projects from the bottom surface of the connector base 41 toward the board 3. And the other end side of each terminal 42 is a connection part 45, and the connection part 45 is electrically connected to the circuit pattern of the circuit board 3 by surface mounting technology (SMT: Surface Mount Technology). A connector 4 is mounted on the circuit board 3.

  In the best mode, the case where the connector 4 is mounted on the circuit board 3 by SMT will be described. However, the present invention is not limited to this, and a through hole in which the terminal 42 of the connector 4 is formed on the circuit board 3 is described. It can also be set as the embodiment which is penetrated and mounted by soldering.

  In the electronic device 1 having the above-described configuration, the circuit board 3 is slid with respect to the case 2 so that the engaging portions 31 of the case 2 are engaged with the slide holes 31 of the circuit board 3 on which the plurality of connectors 4 are surface-mounted. It arrange | positions in case 2 so that it may become free. Then, the plate case 21 is covered with the outer case 22 so that the plurality of connectors 4 are covered with the accommodating portion 222 of the outer case 22 and the concave portion 32 of the circuit board 3 is engaged with the regulating concave portion 224 of the outer case 22. Is called. At this time, each of the plurality of connectors 4 is positioned so as to face a predetermined receiving port 223.

  A seal member (not shown) is interposed between the plate case 21 and the outer case 22 in order to maintain watertightness (waterproofness). The screw hole 215 of the plate case 21 and the screw hole 227 of the outer case 22 are communicated, positioned, and screwed, whereby the waterproof electronic device 1 is assembled. As a result, the circuit board 3 and the plurality of connectors 4 mounted on the circuit board are integrally held in the case 2 so as to be movable in the insertion / removal direction of the mating connector 50.

  Next, an example of the operation (action) when the mating connector 50 is inserted into and removed from the electronic device 1 described above will be described below.

  In the electronic device 1, when the mating connector 50 is inserted from the receiving port 223, the mating connector 50 is press-fitted into the connector 4. As a result, when the connector 4 is moved in the insertion direction according to the pressure input, the circuit board 3 is also moved in the insertion direction together with the connector 4. Then, even after the connector 4 and the mating connector 50 are press-fitted, when pressure is applied from the mating connector 50, the connector 4 abuts against the first movement restriction wall 225 and moves in the insertion direction as shown in FIG. Is blocked. That is, the load applied to the connector 4 is released to the case 2 through the first movement restriction wall 225.

  In the electronic device 1, when the mating connector 50 is removed from the receiving port 223, the connector 4 is moved toward the receiving port 223 by the pulling force on the mating connector 50, and the circuit board 3 follows the connector 4 and is pulled out. Moved to. As shown in FIG. 5, the connector 4 abuts against the second movement restriction wall 226 to restrict movement in the extraction direction. In this state, when the mating connector 50 is further pulled, the mating connector 50 is removed from the connector 4. At this time, since the connector 4 is in contact with the second movement restriction wall 226, the load applied to the connector 4 is released to the case 2 through the second movement restriction wall 226.

  According to the electronic device 1 described above, the circuit board 3 and the plurality of connectors 4 mounted on the circuit board 3 are connected to the mating connector 50 by the first movement restriction wall 225 and the second movement restriction wall 226 that are holding means. Since it is held in the case 2 so that it can move integrally in the insertion / removal direction, it is possible to reduce the load generated during the insertion / removal of the mating connector 50 transmitted to the connection portion between the connector 4 and the circuit board 3. The load applied to the terminal 41 of the connector 4 can be reduced and the connection reliability between the connector 4 and the circuit board 3 can be improved. Therefore, it is possible to easily cope with surface mounting and multipolarization of the connector 4 and to absorb variations in the connector 4 due to thermal expansion, thermal contraction, etc. of the connector 4.

  When the connector 4 is moved in the insertion / removal direction, the movement is restricted by the first movement restriction wall 225 and the second movement restriction wall 226 formed in the case 2, so that when the mating connector 50 is inserted / removed, Since the generated load can be released from the connector 4 to the case 2, it is possible to further reduce the load generated when the mating connector 50 is transferred to and from the connection portion between the connector 4 and the circuit board 3.

  Further, since the engagement portion 213 of the case 2 is slidably engaged with the slide hole 31 of the circuit board 3 and the circuit board 3 is slid in the insertion / removal direction, the slide hole 31 and the engagement portion 213 Since the backlash of the circuit board 3 can be prevented by the engagement, even if external vibration or the like is transmitted to the electronic device 1, the generation of abnormal noise can be prevented.

  In the present best mode described above, the case where the holding means in the claims is configured by the first movement restriction wall 225, the second movement restriction wall 226, the slide hole 31, and the engaging portion 213 has been described. Various embodiments such as a configuration including only the first movement restriction wall 225 and the second movement restriction wall 226 can be employed.

  For preventing the circuit board 3 from rattling, for example, the circuit board 3 is held by an elastic member such as a spring or rubber from above and below, or kept in a biased state in one direction. Various embodiments such as preventing rattling can be provided. In this way, the elastic member can reduce the influence of rattling caused by the follow-up between the circuit board 3 and the connector 4, and can more reliably prevent the generation of abnormal noise.

  Note that the electronic device 1 according to the present invention described above is merely a representative form of the present invention, and the present invention is not limited to the embodiment. That is, various modifications can be made without departing from the scope of the present invention.

It is a disassembled perspective view of the electronic device which concerns on this invention. FIG. 2 is a cross-sectional view of the electronic device in FIG. 1, (a) is an enlarged cross-sectional view of a connector housing portion, and (b) is an enlarged view of a portion A in (a). It is a perspective view for demonstrating the relationship between a connector and a mating connector. It is a cross section at the time of the other party connector insertion of the electronic device in FIG. 1, (a) is an expanded sectional view of a connector accommodating part, (b) is an enlarged view of the part B in (a). It is a cross section at the time of the other party connector removal of the electronic device in FIG. 1, (a) is an expanded sectional view of a connector accommodating part, (b) is an enlarged view of the part C in (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic device 2 Case 3 Circuit board 4 Connector 31 Slide hole (holding means)
50 Mating connector 213 Engaging portion (holding means)
225 First movement restriction wall (holding means)
226 Second movement restriction wall (holding means)

Claims (3)

A case having a receiving port for receiving the mating connector, a circuit board disposed in the case, and a connector mounted on the circuit board so as to face the receiving port and removably connected to the mating connector In an electronic device having
The case includes a holding means for integrally holding the circuit board and the connector mounted on the circuit board so as to be movable in the insertion / removal direction of the mating connector; And having
The circuit board has a recess formed in a shape equivalent to the shape of the restriction recess and larger than the restriction recess,
An electronic apparatus characterized in that movement of the circuit board in the insertion / removal direction is regulated by bringing a concave part of the circuit board and a regulation concave part of the case into contact with each other at a predetermined position .   The electronic device according to claim 1, wherein the holding unit includes a movement restriction wall that is formed in the case and restricts movement of the connector in the insertion / removal direction.   The holding means has a slide hole formed in the circuit board and extending in the insertion / removal direction, and an engagement portion formed in the case and slidably engaged with the slide hole. The electronic device according to claim 1 or 2.

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