JP4933477B2 - connector - Google Patents

Description

  The present invention relates to a connector that uses a flat cable and has a structure in which the flat cable is fixed at a clamp portion to reduce stress on a soldered portion.

  Conventionally, in order to fix a flat cable, there is a flat cable wiring structure disclosed in Patent Document 1. The flat cable wiring structure shown in Patent Document 1 includes a fixed member, a movable member, and a flexible flat cable that connects the fixed member and the movable member. The movable member is formed to be relatively movable with respect to the fixed member, and the flexible flat cable is folded back in a U shape at the intermediate portion along the movement of the movable member. Furthermore, the flat cable wiring structure has a first cable support member and a second cable support member. The first cable support member has a flat plate shape in which an intermediate portion is folded in a U shape along the outer side of the flat cable, and both ends are connected to a fixed member and a movable member, respectively, and can be bent and deformed in the length direction. It has been. The second cable support member has a flat plate shape in which the middle portion is folded back into a U shape along the inner side of the flat cable, and both ends are connected to a fixed member and a movable member, respectively, and provided so as to be able to bend and deform in the length direction. It has been. The first and second cable support members have a configuration in which the flat cable is sandwiched from both sides.

  Patent Document 2 discloses a flat cable fixture. In the flat cable fixing device of Patent Document 2, two flat cables are sandwiched between rubber plates, and a double-sided tape is stretched on the upper surface of the flat cable fixing device. Has a structure that fits into the groove provided. In this structure, the flat cable rising from the connector portion is bent at the shoulder portion, and the flat cable extending horizontally from the shoulder portion is suppressed from above by a sandwiching tool with a double-sided tape. At this time, the sandwiching tool has a structure in which the projection of the sandwiching tool is inserted into a window provided in the flat cable fixing tool to serve as a fulcrum, and is fixed to the sensor module with a screw.

JP 2000-92680 A JP 2005-218269 A

  The flat cable fixing structures shown in Patent Documents 1 and 2 are structures that are directly fixed to the connector or the surface of the board, and are not in the form of pulling out the flat cables in the same direction on both sides of one board. Here, in the flat cable fixing structure, a connector in a form in which the flat cable is pulled out in the same direction on both surfaces of a single substrate can be considered, but there are the following problems.

  First, in the connector as shown in FIG. 10 (a), as shown in FIG. 10 (b), the core portions 5a of the two flat cables 5 are soldered to both surfaces of one substrate 6, and soldering is performed. The attaching portions 5b are respectively formed on both surfaces of the substrate. As shown in FIG. 10A, the board 6 is assembled and fixed to the connector 20. When the board 6 to which the two flat cables 5 are soldered is inserted into the connector 20, it is indicated by arrows 21 and 22. Thus, when the two cables 5 are pushed in, stress is applied to the position indicated by the arrow 23 in FIG. Also, by bending the cable 5, the magnitude of stress differs between the upper and lower cables 5 at the position indicated by the arrow 23 in FIG. The flat cable 5 is displaced. Due to the occurrence of this deviation, stress was applied to the core wire portion 5a and the wire was easily disconnected.

  Further, as shown in FIG. 11, after the flat cable 5 soldered to the housing 1 of the connector 20 is assembled, potting is performed. When an external force as indicated by an arrow 24 is applied, the flat cable 5 flutters. Occurs. Due to the flapping, the potting interface was easily peeled off.

  Furthermore, as shown in FIG. 12, for the purpose of protecting the two flat cables 5 coming out of the connector 20, the two flat cables 5 were covered with the outer packaging materials 31 and 32 so as to be sandwiched. , The rigidity of the flat cable 5 is increased, and as a result, the pushing force by the spring back in the direction indicated by the arrow 25 is increased. In addition, as shown by the arrow 26, when one end of the flat cable is moved up and down, excessive stress is generated in the soldering portions 5b and 5b (see FIG. 10).

  Therefore, a technical problem of the present invention is to provide a connector having a flat cable fixing structure that can reduce stress on a soldering portion and can prevent the potting agent from peeling off.

According to the present invention, in the connector connected to the cable, the connector includes a contact, a housing that holds the contact, and a clamp portion that holds and fixes the cable, and the clamp portion includes a pair of cable holding portions. And holding and fixing the cable in a state in which the cables are used and stacked in the thickness direction of the cable, and the cables fix the adjacent cables in the thickness direction of the cable. A fixing portion, and the fixing portion is formed in a range of a predetermined length in a part of one end side in the longitudinal direction of the cable orthogonal to the thickness direction of the cable, and the thickness direction of the cable The pair of cable holding portions are formed in a range of a predetermined width in the width direction of the cable that is orthogonal and orthogonal to the longitudinal direction of the cable. Connector, characterized in that to sandwich at least a part of the fixing portion can be obtained.

  According to the invention, in the connector connected to the cable, the connector includes a contact, a housing that holds the contact, and a clamp portion that holds and fixes the cable, and the clamp portion holds a pair of cable holdings. A plurality of the cables, and holding and fixing the cables in a state of being overlapped in the thickness direction of the cables, and the cables are adjacent to each other in the thickness direction of the cables. A fixing portion for fixing, the fixing portion being formed to have a predetermined length in the longitudinal direction of the cable orthogonal to the thickness direction of the cable, and orthogonal to the thickness direction of the cable; And formed in a range of a predetermined width in the width direction of the cable orthogonal to the longitudinal direction of the cable, and the fixing portion is a length of the cable Formed in plurality at a predetermined interval in the direction, the cable holding portion is a connector, characterized in that clamping between the fixing portion of the next to each other is obtained.

  According to the invention, in any one of the connectors, the range of the predetermined length of the fixing portion is formed larger than the length dimension of the cable holding portion in the longitudinal direction of the cable. A connector characterized by the above is obtained.

  According to the present invention, in the connector, the range of the predetermined length of the fixing portion is formed larger than the length dimension of the cable holding portion in the longitudinal direction of the cable, and the pair of cable holding portions The connector can be obtained by sandwiching the fixing portion within the predetermined length range of the fixing portion.

  Further, according to the present invention, in any one of the connectors, a connector characterized in that an exterior material covering at least one of the outer front and back surfaces of the plurality of cables is provided.

  According to the present invention, a connector having a flat cable fixing structure in which a part of a plurality of flat cables is integrated at a fixing portion and the fixing portion is sandwiched between clamp portions to reduce stress on a soldering portion. Can be provided.

  In addition, according to the present invention, the flat cable is fixed to the housing at the clamp portion, thereby suppressing the flapping of the flat cable after the connector root, and as a result, the stress of the soldering portion of the flat cable can be reduced. Further, it is possible to provide a connector having a flat cable fixing structure capable of preventing the peeling of the interface between the potting agent and the flat cable.

  Embodiments of the present invention will be described below.

  Fig.1 (a) is a figure which shows the connector for cable connection by embodiment of this invention. FIG. 1B is an exploded perspective view showing the connector of FIG.

  Referring to FIGS. 1A and 1B, the connector harness includes a housing 1, a contact 14 (see FIG. 2), a substrate 6 (see FIG. 2), and a plurality of integrated flats that are attached to the substrate 6. A pair of clamp portions 2 for fixing the flat cable 5 to the cable 5 and the housing 1 are provided. A pair of clamp part 2 has the cable holding part 3 for pinching and hold | maintaining a flat cable on the flat cables 5 and 5 side, respectively. Each of the clamp portions 2 includes an engaging portion including a U-shaped portion 4a on one side and a protruding portion 4b in order to hold and fix the state in which the flat cable 5 is sandwiched. Therefore, when the two clamp parts 2 sandwich the flat cable, the U-shaped part 4a of one clamp part 2, the protrusion part 4b of the other clamp part 2, and the protrusion part 4b of the one clamp part 2, The U-shaped part 4a of the other clamp part 2 is engaged with each other.

  A pair of protrusions 1b provided on the housing 1 and a pair of recesses 4c provided on each of the pair of clamp parts 2 respectively position the pair of clamp parts 2 on the housing 1, and the U-shaped part 4a and the protrusions. The clamp part 2 is fixed to the housing 1 by engaging the part 4b.

  FIG. 2 is a cross-sectional view of the connector of FIG. Referring to FIG. 2, the connector 10 includes a housing 1 and a pair of upper and lower clamp portions 2. One end of the housing has an opening 11, and the other end is provided with a housing portion 1 a for housing cables 5, 5 fixed to both surfaces of the substrate 6 by soldering. A contact 14 is provided so as to penetrate from the opening 11 side along the upper and lower surfaces of the partition wall 11a to the accommodating portion 1a and project from the partition wall 11a. One end of the substrate 6 is sandwiched between the tips of the contacts 14 projecting from the housing portion 1a, and one end of the contact 14 is soldered to the substrate 6. Thereafter, the core wire portion 5 a of the flat cable 5 is soldered to the substrate 6. After soldering the core wire portion 5a, a potting portion 16 is formed so as to fill a gap with the accommodating portion 1a by potting, and the flat cables 5 and 5 are sandwiched between the clamp portions 2 and connected and fixed to the connector 10. The In addition, after soldering a flat cable to a board | substrate, after inserting this board | substrate in a accommodating part, a contact can be soldered to a board | substrate, and formation of a potting part can also form the flat cables 5 and 5 by the clamp part 2. Of course, it may be a post-process after being sandwiched.

  The housing 1 is provided with a lock arm 13 having a locking portion for locking the fitting state with the mating connector and elastically displacing.

  3 to 7 are cross-sectional views for explaining the positional relationship between the cable clamp 2 and the fixing portion 7 and the effects.

  Referring to FIG. 3, each of the two flat cables 5, 5 is attached to the substrate by soldering portions 5 b, 5 b each having a core wire portion 5 a formed of a fine wire at one end formed on the front and back of the substrate 6 by soldering. It is connected. On the opposing surfaces of the two flat cables 5 and 5, a fixing portion 7 integrated by fusion, adhesion or the like is formed at a position away from the substrate in the cable length direction.

  The fixed portion 7 is formed so that the range 8 of the predetermined length is somewhat longer than the length of the clamp portion 2 (in the cable longitudinal direction 18 in FIG. 1B). Moreover, the width | variety of the adhering part 7 (length of the width direction 17 of the cable of FIG. 1) should just be a length provided with the intensity | strength of a flat cable.

  The positional relationship between the clamp portions 2 and 2 shown in FIG. 3 and the fixing portion 7 in which the flat cable is integrated is optimal. That is, the predetermined length range 8 of the fixing portion 7 of the flat cable 5 is larger than the length of the cable holding portion 3 of the clamp portions 2 and 2 in the longitudinal direction of the cable, and the clamp portions 2 and 2 are in the fixing portion 7. Is more effective.

  4 and FIG. 5, also in the positional relationship between the clamp part 2 and the fixing part 7, about a half of the length of the cable holding part 3 of the clamp part 2 in the cable longitudinal direction is the fixing part in which the flat cable 5 is integrated. A range 8 having a predetermined length of 7 is included, and the effect of preventing stress on the soldering portion 5b is obtained.

  Furthermore, when the positional relationship between the clamp part 2 and the fixing part 7 shown in FIG. 6 is within the predetermined length range 8 of the fixing part 7 on the soldering part 5b side than the cable holding part 3 of the clamp part 2 The stress prevention effect of the soldering part 5b is reduced as compared with FIGS.

  Further, as shown in FIG. 7, the positional relationship between the clamp part 2 and the fixing part 7 is such that a predetermined length range 8 of the fixing part 7 is opposite to the soldering part 5b from the cable holding part 3 of the clamp part 2. In some cases, since the stress applied to the soldering portion 5b of the flat cable 5 cannot be absorbed, the effect of reducing the stress applied to the soldering portion 5b cannot be obtained.

  Thus, it is effective to apply the predetermined length range 8 of the fixing portion 7 for integrating the flat cable 5 to the cable holding portion 3 and the soldering portion 5b side of the clamp portion 2.

  FIG. 8 is a cross-sectional view showing a modification of the cable fixing structure of the connector of FIGS. In the example shown in FIG. 8, one end of each of the two flat cables 5 is soldered to the substrate via the soldering portion 5 b by soldering the core wire portion 5 a to the front and back of the substrate 6, and is separated from the substrate 6. A fixing portion 7 integrated by fusion, adhesion, or the like is formed on the side, and another cable fixing portion 7 ′ is formed on the side away from the substrate 6. In such a case, the effect of preventing stress on the soldering portion 5b is obtained by providing the respective fixing portions 7 and 7 'before and after the cable holding portion 3 of the clamp portion 2 in the longitudinal direction of the flat cable 5. In addition, the cable holding part 3 of the clamp part 2 in the longitudinal direction of the flat cable 5 further absorbs the deviation between the length ranges 8 and 8 'of the fixing parts 7 and 7' and the clamp part 2. The position where the flat cable 5 is held can have a degree of freedom.

  In addition, it is preferable that the space | interval of the longitudinal direction of the flat cables 5 and 5 of the adhering parts 7 and 7 'is somewhat longer than the length of the cable holding part 3. FIG. The position of the clamp part may be at the position shown in FIGS. Alternatively, the fixing portions 7 and 7 'may be clamped across the two fixing portions 7 and 7' by narrowing the distance in the longitudinal direction of the cable.

  As described above, in the embodiment of the present invention, a part of the plurality of flat cables 5 is integrated by forming the adhering portion 7, whereby a part of the two flat cables 5, 5 is integrated. By holding the fixing portion 7 at the clamp portion, the difference due to the difference in bending radius R between the upper and lower flat cables 5 (due to the difference in bending radius R when the flat cable is bent) is caused in the soldering portions 5b and 5b. It does not occur, and it is difficult for external force to be transmitted to the soldering part 5b. As a result, the stress of the soldering part 5b on the substrate 6 can be reduced. By fixing the vicinity of the soldering portion 5b of the substrate 6 with the clamp portion 2 and mounting the clamp portion 2 on the connector 10, the stress applied to the soldering portion 5b can be reduced.

  Further, as shown in FIG. 2, the flat cable 5 is fixed to the housing 1 by the clamp portion 2, thereby suppressing fluttering of the flat cable after the connector base, and as a result, the stress of the soldering portion 5b is reduced. I can do it.

  As shown in FIG. 2, the clamp part 2 is attached so that the movement of the flat cable 5 does not transmit stress to the potting parts 15 and 16 of the connector, so that the boundary surface between the potting agent and the flat cables 5 and 5 is obtained. Can be prevented, and a waterproof effect can be obtained.

  FIG. 9 is a side view showing an example in which the outer periphery of the flat cable 5 exposed from the connector 10 fixed and held in FIG. As shown in FIG. 9, in this embodiment in which the fixing portion 7 is provided on the flat cable 5, when the flat cable 5 is protected by the exterior material 31, the soldering portion 5 b (see FIG. 3) by springback is used. The applied stress can be reduced.

  As described above, according to the embodiment of the present invention, in the connector harness using a plurality of flat cables 5, the fixing portion 7 is formed on a part of the plurality of flat cables 5 and integrated. It is possible to provide a connector having a cable fixing structure in which a portion is fixed by a clamp part and stress on a soldering part can be reduced.

  In the embodiment of the present invention, the portion where the stress is prevented or reduced is described as the soldering portion 5b, but the stress portion includes the soldering portion 5b and the core wire portion 5a in the vicinity thereof. Needless to say.

  The connector of the present invention is a sensor for a control unit in a small package and a waterproof function and for exchanging electrical signals, specifically, gasoline vehicles, hybrid vehicles, fuel cell vehicles, and home cogeneration as specific examples. The present invention can be applied to parts such as voltage monitoring, monitors, cameras, communication devices, and the like that are connected to the monitor.

(A) is a figure which shows the connector for cable connection by embodiment of this invention, (b) is a disassembled perspective view which shows the connector of (a). It is sectional drawing of the connector of Fig.1 (a). It is sectional drawing with which it uses for description of the positional relationship and effect of the cable clamp 2 and the cable integrated part 7 of the connector of Fig.1 (a). It is sectional drawing with which it uses for description of the positional relationship and effect of the cable clamp 2 and the cable integrated part 7 of the connector of Fig.1 (a). It is sectional drawing with which it uses for description of the positional relationship and effect of the cable clamp 2 and the cable integrated part 7 of the connector of Fig.1 (a). It is sectional drawing with which it uses for description of the positional relationship and effect of the cable clamp 2 and the cable integrated part 7 of the connector of Fig.1 (a). It is sectional drawing with which it uses for description of the positional relationship and effect of the cable clamp 2 and the cable integrated part 7 of the connector of Fig.1 (a). FIG. 8 is a cross-sectional view illustrating a modification of the connector of FIGS. 3 to 7. It is a side view which shows the example which provided the exterior material around the flat cable exposed from the connector which fixedly held the flat cable of FIG. (A) is a figure which shows the prior art example of the connector provided with the flat cable fixing structure, (b) is a connector of (a), and solders the core part of two flat cables on both surfaces of the one board | substrate 6 Sectional drawing which shows the structure at the time of performing, (c) is a figure which shows the fault of the cable connection structure of (b). It is a perspective view which shows the fault when the cable soldered to the connector of FIG. 10 is integrated. It is a figure which shows the fault when an exterior material is provided in the cable of the connector of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 1a Accommodating part 2 Clamping part 3 Cable holding part 5 Flat cable 5a Core wire part 5b Soldering part 6 Substrate 7, 7 'Adhering part 8, 8' Length range 10 Connector 11 Opening part 11a Partition wall 14 Contact 16 Potting Part 17 Flat cable width direction 18 Flat cable longitudinal direction 20 Connector 31, 32 Exterior material

Claims (4)

For connectors that connect to cables
The connector includes a contact, a housing that holds the contact, and a clamp portion that holds and fixes the cable.
The clamp portion has a pair of cable holding portions, and uses a plurality of the cables to hold and fix the cables in a state of being overlapped in the thickness direction of the cables,
The cable has a fixing portion that fixes the cables adjacent in the thickness direction of the cable,
The adhering portion is formed in a range of a predetermined length on a part of one end side in the longitudinal direction of the cable orthogonal to the thickness direction of the cable, and is orthogonal to the thickness direction of the cable, and the cable Formed in a range of a predetermined width in the width direction of the cable orthogonal to the longitudinal direction of
The pair of cable holding portions sandwich at least a part of the fixing portion. For connectors that connect to cables
The connector includes a contact, a housing that holds the contact, and a clamp portion that holds and fixes the cable.
The clamp portion has a pair of cable holding portions, and uses a plurality of the cables to hold and fix the cables in a state of being overlapped in the thickness direction of the cables,
The cable has a fixing portion that fixes the cables adjacent in the thickness direction of the cable,
The adhering portion is formed to have a predetermined length range in the longitudinal direction of the cable orthogonal to the thickness direction of the cable, and is orthogonal to the thickness direction of the cable, and the longitudinal direction of the cable. It is formed in a range of a predetermined width in the width direction of the orthogonal cable,
A plurality of the fixing portions are formed with a predetermined interval in the longitudinal direction of the cable,
The cable holding part clamps between the adhering parts adjacent to each other.   The connector according to claim 1, wherein the range of the predetermined length of the fixing portion is formed larger than the length dimension of the cable holding portion in the longitudinal direction of the cable, and the pair of cable holding portions are: The connector, wherein the fixing portion is clamped within the predetermined length range of the fixing portion.   4. The connector according to claim 1, further comprising an exterior material that covers at least one of the outer front and back surfaces of the plurality of cables. 5.

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