JP2009103263A - Cable transmission mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To extremely enhance reliability in a joining state of an inner wire of a cable and a driving member, the cable being capable of transmitting tensile force to an operation member from the driving member. <P>SOLUTION: An I-shaped connection part (y) orthogonal to the longitudinal direction of the inner wire is arranged in one end part 15a1 of the inner wire. A connection mechanism D1 having a connection member 62 and a rotation suppressing member 63 is interposed between the one end part 15a1 of the inner wire and the driving member. The connection member 62 has an insertion hole part capable of inserting the I-shaped connection part (y), a rotation allowable part 62b allowing rotation around an insertion hole of the I-shaped connection part (y) inserted into this insertion hole part, and an engaging part 62c engageable with the I-shaped connection part (y) in a state of rotating the I-shaped connection part (y) by a predetermined quantity by the rotation allowable part 62b. The rotation suppressing member 63 has a restraining part 63b attachable-detachable to a connection part of the connection member 52 and the one end part 15a1 of the inner wire and holding a state of rotating by the predetermined quantity of the I-shaped connection part (y). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cable transmission mechanism applicable to, for example, an electric parking brake device, and in particular, a cable that is interposed between a drive member and an operation member and can transmit a tensile force from the drive member to the operation member. An inner wire connected to the drive member at one end via a connecting mechanism and connected to the actuating member at the other end, and an outer periphery other than both ends of the inner wire and covering both ends. It is related with the cable transmission mechanism provided with the outer tube hold | maintained by movement by this.

This type of cable transmission mechanism is described, for example, in Patent Document 1 below. In the cable transmission mechanism applied to the electric parking brake device described in Patent Document 1 below, it is possible to transmit a tensile force by being interposed between an operating portion of an equalizer as a driving member and a parking brake as an operating member. An inner wire connected to an equalizer (driving member) at one end via a connecting mechanism and connected to an operating portion (operating member) of a parking brake at the other end, and both ends of the inner wire An outer tube that covers the outer periphery other than the portion and is held immovably by the holding members at both ends is provided.
JP 2006-17158 A

  In the cable transmission mechanism described in Patent Document 1 described above, as a coupling mechanism that couples the equalizer and one end of the inner wire, it is formed in an oscillating portion of the equalizer (a U-shape that opens toward the inner wire side). A pair of through-holes penetrating in a direction perpendicular to the longitudinal direction of the inner wire, and a part of the through-hole provided in one of the through-holes in the longitudinal direction and through the inner wire. A notch that is opened in a direction perpendicular to the hole is employed. Also, an I-shaped connecting portion orthogonal to the longitudinal direction of the inner wire is integrally provided at one end of the inner wire, and a part of the I-shaped connecting portion passes through the notch described above. It is inserted and fixed to the above-described pair of through holes at both ends.

  In the cable transmission mechanism described in Patent Document 1, an annular groove is formed at one end of the outer tube that covers the outer periphery of the inner wire, and a housing (assembled into the vehicle body) is formed in the annular groove. Part of the outer tube) is fitted so that one end of the outer tube is held immovably by the housing.

  In the cable transmission mechanism described in Patent Document 1 described above, the I-shaped connecting portion provided at one end of the inner wire is fitted and fixed to the pair of through holes provided in the swinging portion of the equalizer at both ends thereof. In this configuration, it is difficult to reliably hold the connection between the I-shaped connecting portion and the equalizer, and the I-shaped connecting portion may be detached from the equalizer for some reason, and the reliability is insufficient.

  Further, in the cable transmission mechanism described in Patent Document 1 described above, an I-shaped connecting portion provided at one end portion of the inner wire is assembled to the swinging portion of the equalizer assembled in the housing. At the same time, it is necessary to assemble one end of the outer tube into a part of the housing so that a part of the housing is fitted into an annular groove formed at one end of the outer tube. For this reason, when the equalizer, inner wire, outer tube, etc. are assembled to the housing, it is necessary to handle the housing and the cable integrally, and in the middle of the production line, handle a long and inconvenient cable. It is necessary and productivity is bad. Further, when replacing the cable, it is necessary to disassemble and reassemble the housing, and the serviceability in the market is also poor.

  The present invention has been made to cope with the above-described problems, and a cable that is interposed between a drive member and an operation member and can transmit a tensile force from the drive member to the operation member is connected to the drive member. An inner wire connected at one end through a mechanism and connected to the actuating member at the other end, and an outer periphery other than both ends of the inner wire is covered and each end cannot be moved by a holding member. In the cable transmission mechanism including the outer tube to be held, one end portion of the inner wire is integrally provided with an I-shaped connecting portion orthogonal to the longitudinal direction of the inner wire. The mechanism allows an insertion hole portion through which the I-shaped connecting portion can be inserted in the longitudinal direction of the inner wire, and rotation around the insertion hole of the I-shaped connecting portion inserted through the insertion hole portion. And the I-shaped connecting portion inserted through the insertion hole and rotated through the rotation-permissible portion by a predetermined amount in the longitudinal direction of the I-shaped connecting portion and the inner wire. And a connecting member connected to the driving member at the driving end, and connecting the connecting member to one end of the inner wire. It is characterized in that it includes a rotation restraining member that is detachably assembled to the part and that can maintain a state in which the I-shaped connecting portion is rotated by a predetermined amount.

  In the cable transmission mechanism according to the present invention, the I-shaped connecting portion provided at one end portion of the inner wire is inserted into the insertion hole portion of the connecting member connected to the driving member and allowed to rotate therethrough. After rotating a predetermined amount at the portion, the rotation restraining member is assembled to the connecting portion of the connecting member and one end portion of the inner wire, and the I-shaped connecting portion is kept rotated by the predetermined amount. Inner wires can be joined. In addition, after removing the rotation restraining member from the connecting portion between the connecting member and one end of the inner wire, the I-shaped connecting portion provided at the one end of the inner wire is inserted into the insertion hole of the connecting member at the rotation allowing portion of the connecting member. If it is rotated until it matches the part and pulled out in the longitudinal direction of the inner wire, the coupling of the driving member and the inner wire can be released.

  By the way, in the cable transmission mechanism according to the present invention, in the coupled state of the driving member and the inner wire, the engaging portion of the connecting member and the I-shaped connecting portion of the inner wire can be engaged in the longitudinal direction of the inner wire, Moreover, since the I-shaped connecting portion rotated by a predetermined amount can be held by the rotation restraining member, even when a tensile force acts on the inner wire, the I-shaped connecting portion of the inner wire acts on the drive member. It is difficult to rotate, and the reliability in the combined state of the driving member and the inner wire is extremely high.

  In carrying out the present invention, the rotation restraining member is elastically engaged with a part of the connecting member or a part of the inner wire in a direction orthogonal to the longitudinal direction of the inner wire to prevent the rotation preventing member from coming off. In the state where the elastic repulsive engagement is released, the engaging portion is movable along the longitudinal direction of the inner wire, and the insertion portion is inserted through the insertion hole portion and the I portion passes through the insertion portion. It is also possible to integrally include a suppressing portion that suppresses the rotation of the character-shaped connecting portion. In this case, it is possible to configure a highly reliable coupling mechanism for coupling the drive member and the I-shaped coupling portion of the inner wire with two parts of the coupling member and the rotation restraining member, which is simple and inexpensive. It is possible to configure.

  In carrying out the present invention, the actuating member is provided in an actuating portion of a vehicle parking brake, and the driving member is assembled in a housing assembled to a vehicle body and is generated by a parking brake operation. The one end of the inner wire is detachable from the outside of the housing through the housing to the output of the driving member via the connecting mechanism, and the one end of the outer tube is It is also possible to be detachable from the housing.

  In this case, one end portion of the outer tube can be inserted into and removed from the housing along the longitudinal direction of the inner wire, and a tube cover covering the one end portion of the outer tube is removable from the housing. In the state assembled to the housing, one end of the outer tube can be prevented from coming off from the housing. The tube cover includes a notch portion that can be inserted into and removed from the outer tube in a direction perpendicular to the longitudinal direction thereof, and a fitting portion that is positioned by being fitted to a part of the outer periphery of the outer tube. It is also possible to have an engaging part that is detachably engaged with a locking part provided in the housing.

  In these cases, in the cable transmission mechanism, one end portion of the inner wire can be detached from the outside of the housing through the housing to the output portion of the driving member via the connection mechanism, and one end portion of the outer tube is Removable with respect to the housing. For this reason, after assembling various parts to the housing, it is possible to assemble the housing side end part of the cable by assembling only the component parts of the corresponding part. Therefore, productivity is very good because it is not necessary to handle it in the state where it is assembled to the housing. Further, the detachment (disassembly / reassembly) of the housing side end portion of the cable can be performed by detaching only the components of the corresponding part without disassembling the housing, and the serviceability in the market is extremely good.

  Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show a first embodiment of the present invention, and this first embodiment is an embodiment of the present invention applied to an electric parking brake device for an automobile. The electric parking brake device shown in FIG. 1 decelerates and transmits the rotational driving force, which is the output of the electric motor 11, and the rotational driving force of the electric motor 11 transmitted through the speed reducing mechanism A. A conversion mechanism B that converts linear driving force (linear driving force) and an equalizer 12 that is driven by the linear driving force converted by the conversion mechanism B and distributes the linear driving force to two output units are provided. Yes.

  The electric parking brake device is connected to the output portions 12 a and 12 b of the equalizer 12 to transmit a linear driving force to the parking brakes 13 and 14, and inner cables of these cables 15 and 16. A tension sensor TS that can detect a tensile force acting on the wires 15a and 16a and outputs an electric signal, and an electric control unit ECU that controls the rotational drive of the electric motor 11 are provided.

  Note that a one-way power transmission mechanism C is interposed at a connecting portion between the speed reduction mechanism A and the conversion mechanism B. The one-way power transmission mechanism C is assembled on the screw shaft 41 and transmits the rotational driving force from the electric motor 11 and the speed reduction mechanism A to the conversion mechanism B, but the rotational drive from the conversion mechanism B to the speed reduction mechanism A. The transmission of force can be prevented, and the braking state of the parking brakes 13 and 14 can be maintained when the electric motor 11 is stopped from rotating forward.

  The electric motor 11 is assembled to a casing 32 that is assembled to one side of a housing 31 that is fixedly held on a part of the vehicle body, and its operation is controlled by the electric control unit ECU. For example, the electric motor 11 is rotated in the forward direction when the driver operates the brake switch SW1, and is rotated in the reverse direction when the driver operates the release switch SW2.

  The speed reduction mechanism A is incorporated in a housing portion between the housing 31 and the casing 32, and is connected to an output shaft (not shown) of the electric motor 11 and rotates integrally with an input small gear (not shown), a screw An output large gear 21 is rotatably attached to the end of the shaft 41 and connected to the input portion of the one-way power transmission mechanism C so as to be able to transmit torque. Further, the speed reduction mechanism A is rotatably assembled to the housing 31 and the casing 32, and an intermediate large gear (not shown) that is always meshed with the input small gear, and the intermediate large gear can rotate integrally with the intermediate large gear, and the output is large. An intermediate small gear (not shown) that always meshes with the gear 21 is provided.

  The conversion mechanism B has a configuration in which a screw shaft 41 connected to an output portion of the one-way power transmission mechanism C is connected to be able to transmit torque as an input element, and a nut 42 screwed and assembled to the screw shaft 41 is used as an output element. When the screw shaft 41 is rotationally driven in the forward direction, the nut 42 is moved from the release position (shown in the solid line in FIG. 1) toward the brake position (shown in the phantom line in the drawing) on the left in FIG. The nut 42 is moved in the axial direction of the screw shaft 41 toward the release position on the right side in FIG. 1 when the screw shaft 41 is driven to rotate in the reverse direction. Yes.

  The screw shaft 41 is arranged with the moving direction of the inner wires 15a, 16a in the cables 15, 16 as the axial direction, and has a male screw (the number and shape of the male screw can be changed as appropriate), and the housing 31 In contrast, it is assembled so as to be movable and rotatable slightly in the axial direction (so that the tensile force acting on the inner wires 15a and 16a of the cables 15 and 16 can be detected by the tension sensor TS). The nut 42 is connected to the equalizer 12 via the connecting pin 43 and supports the equalizer 12 so as to be able to swing (rotate around the connecting pin 43). In addition, in the housing 31 shown in FIG. 1, the cover (illustration omitted) which seals the opening of the housing 31 is removed.

  The equalizer 12 distributes the linear driving force acting on the nut 42 equally to the two output parts 12a and 12b, and a set amount (for example, left and right from the state of FIG. It is assembled so that it can swing. The equalizer 12 is connected to one end portion 15a1 of the inner wire 15a in one cable 15 through one connecting portion D1 at one output portion 12a, and to the inner portion in the other cable 16 at the other output portion 12b. It is connected to one end 16a1 of the wire 16a via a connecting mechanism D2.

  One cable 15 is immovable by an inner wire 15a, a housing 31 that covers the outer periphery other than both ends of the inner wire 15a, and each end is a holding member and a brake housing (not shown) of one parking brake 13. The other end portion of the inner wire 15a is connected to the operating portion of one parking brake 13 in a well-known manner.

  The other cable 16 is immovable by an inner wire 16a and an outer periphery other than both ends of the inner wire 16a and a housing 31 serving as a holding member at each end and a brake housing (not shown) of the other parking brake 14. The other end portion of the inner wire 16a is connected to the operating portion of the other parking brake 14 in a well-known manner.

  The tension sensor TS is assembled to the right end of the housing 31 in FIG. 1, and is fitted and fixed to the housing 31 from the inside via an O-ring, and the clip 51 is assembled to the case 51. The bearing plate 53, the thrust bearing 54, the pressure plate 55, and the rubber disk 56, which are prevented from coming off, are fitted to the housing 31 from the outside via an O-ring and screwed to the case 51 to be part of the disk 56. The pressure sensor 57 is configured to detect a part of the axial load that contacts and acts on the screw shaft 41.

  In this tension sensor TS, the entire axial load acting on the screw shaft 41 is transmitted to the disk 56 through the bearing plate 53, the thrust bearing 54, and the pressure plate 55, and is preset in the case 51 and the pressure sensor 57 by the disk 56. Therefore, the tensile force acting on the inner wires 15a and 16a of the cables 15 and 16 based on the output of the pressure sensor 57 (corresponding to the total axial load acting on the screw shaft 41) is distributed. It is possible to detect.

  As shown in FIG. 1, one connecting mechanism D1 includes a connecting member 62 rotatably connected to one output portion 12a of the equalizer 12 via a connecting pin 61, and the connecting member 62 and one cable. 15 is provided with a rotation restraining member 63 that is detachably assembled to a connecting portion of the inner wire 15a with one end 15a1 of the inner wire 15a. As shown in FIG. 1, the other connecting mechanism D2 includes a connecting member 72 that is rotatably connected to the other output portion 12b of the equalizer 12 via a connecting pin 71, and the connecting member 72 and the other cable. 16 is provided with a rotation restraining member 73 which is detachably assembled to a connecting portion of the inner wire 16a with one end portion 16a1 of the inner wire 16a.

  Since the one end 15a1 of the inner wire 15a and the one end 16a1 of the inner wire 16a are formed in the same shape, the one end 15a1 of the inner wire 15a will be described in detail, and the one end 16a1 of the inner wire 16a will be described. Is omitted. As shown in FIGS. 2 to 5, the one end portion 15 a 1 of the inner wire 15 a is integrally provided on the shaft portion x extending in the longitudinal direction of the inner wire 15 a and the tip of the shaft portion x. It has an I-shaped connecting portion y orthogonal to the longitudinal direction, and is generally T-shaped (see FIG. 4).

  Since one connecting member 62 and the other connecting member 72 are formed in the same shape, one connecting member 62 will be described in detail, and description of the other connecting member 72 will be omitted. As shown in FIGS. 2, 4 and 5, one connecting member 62 includes an insertion hole 62a through which the I-shaped connecting portion y of the inner wire 15a can be inserted in the longitudinal direction of the inner wire 15a, and the insertion hole 62a. A rotation allowing portion 62b that allows rotation around the insertion hole of the I-shaped connecting portion y inserted through the hole portion 62a and an I-shaped connecting portion y that passes through the insertion hole portion 62a and passes therethrough are rotation-allowing portions. The wire-side end portion has an I-shaped connecting portion y and an engaging portion 62c that can be engaged in the longitudinal direction of the inner wire 15a while being rotated by a predetermined amount (approximately 90 degrees) at 62b.

  Further, the I-shaped connecting portion y of the inner wire 15a is inserted into the insertion hole 62a at the wire side end of one of the connecting members 62 and is allowed to rotate around the insertion hole. A stopper portion 62d with which the connecting portion y can abut, a pair of protruding piece portions 62e extending in the longitudinal direction of the inner wire 15a from the end of the insertion hole portion 62a, and a rotation formed by these protruding piece portions 62e. A pair of protrusions 62 f are provided that allow the locking portion 63 a of the restraining member 63 to be elastically engaged and disengaged and to allow the rotation restraining member 63 to be attached to and detached from the connecting member 62.

  Since one rotation suppression member 63 and the other rotation suppression member 73 are formed in the same shape, one rotation suppression member 63 will be described in detail, and description of the other rotation suppression member 73 will be omitted. As shown in FIGS. 2 and 4 to 6, one rotation restraining member 63 is detachably assembled to the connecting portion of the connecting member 62 and the one end portion 15 a 1 of the inner wire 15 a, and has an I-shaped connection. The state where the portion y is rotated by a predetermined amount can be held.

  One rotation restraining member 63 is elastically engaged with each protrusion 62f of the connecting member 62 in a direction orthogonal to the longitudinal direction of the inner wire 15a and is prevented from coming off, and the elastic repulsive engagement. In the released state, the inner wire 15a is inserted through the pair of engaging portions 63a movable along the longitudinal direction of the inner wire 15a and the insertion hole portion 62a of the connecting member 62 and partially penetrates the inner wire 15a. And a pair of restraining portions 63b that restrain the rotation of the I-shaped connecting portion y. In addition, one rotation restraining member 63 is formed with a rectangular hole 63c into which the I-shaped connecting portion y of the inner wire 15a and both protruding pieces 62e of the connecting member 62 can be inserted, and both protrusions of the connecting member 62 A pair of notches 63d through which 62f can pass is formed.

  Further, in this embodiment, one end portions 15a1 and 16a1 of the inner wires 15a and 16a can be attached to and detached from the output portions 12a and 12b of the equalizer 12 from the outside of the housing 31 through the housing 31 via the connecting mechanisms D1 and D2. is there. Further, one end portions 15b1 and 16b1 of the outer tubes 15b and 16b can be inserted into and removed from the housing 31 along the longitudinal direction of the inner wires 15a and 16a via an O-ring (removable). The tubes 15b and 16b are prevented from being detached from the housing 31 by tube covers 81 and 82 covering the one end portions 15b1 and 16b1.

  Since one tube cover 81 and the other tube cover 82 are formed in the same shape, the one tube cover 81 will be described in detail, and the description of the other tube cover 82 will be omitted. One tube cover 81 is detachable from the housing 31 in a state assembled to one end portion 15b1 of the outer tube 15b. As shown in FIGS. 2 to 4, the tube cover 81 is attached to the outer tube 15b. A notch portion 81a that can be inserted and removed in a direction orthogonal to the longitudinal direction, a fitting portion 81b that is fitted and positioned on a part of the outer periphery of the outer tube 15b, and a pair of locking portions provided in the housing 31 It has a pair of engaging part 81c (claw part) engaged with 31a (groove part) so that attachment or detachment is possible.

  In the first embodiment configured as described above, when the brake switch SW1 is operated, the electric motor 11 is driven to rotate in the forward direction, and the screw shaft 41 of the conversion mechanism B is rotated in the forward direction. 42 and the equalizer 12 move in the axial direction of the screw shaft 41 from the right position (release position) in FIG. 1 toward the left position (braking position) in FIG. For this reason, the inner wires 15a and 16a of the cables 15 and 16 are pulled, and the parking brakes 13 and 14 are changed from the released state to the braked state.

  At this time (when the inner wires 15a and 16a of both cables 15 and 16 are pulled), the tension force acting on the inner wires 15a and 16a of both cables 15 and 16 is detected by the tension sensor TS. This tensile force is input to the electric control unit ECU, and when the value reaches a high set value (braking determination value), the forward rotation drive of the electric motor 11 is stopped based on a control signal from the electric control unit ECU. . When the electric motor 11 stops rotating forward, the reverse rotation of the screw shaft 41 is regulated and held by the conversion mechanism B, the one-way power transmission mechanism C, the speed reduction mechanism A, etc. State is maintained.

  Further, when the release switch SW2 is operated in the braking state of both the parking brakes 13 and 14, the electric motor 11 is driven in reverse rotation, and the screw shaft 41 of the conversion mechanism B is rotated in reverse, whereby the nut 42 and the equalizer 12 move from the left position (braking position) in FIG. 1 to the right position (release position) in FIG. For this reason, the inner wires 15a and 16a of both the cables 15 and 16 are loosened, and both the parking brakes 13 and 14 are released from the braking state.

  Also at this time (when the inner wires 15a and 16a of both cables 15 and 16 are loosened), the tension force acting on the inner wires 15a and 16a of both cables 15 and 16 is detected by the tension sensor TS. The tensile force is input to the electric control unit ECU, and when the value becomes a low set value (release determination value), the reverse rotation driving of the electric motor 11 is stopped based on the control signal from the electric control unit ECU. .

  Further, in the first embodiment described above, the tube covers 81 and 82 are removed from the housing 31 (from a pair of locking portions 31a (grooves) provided with a pair of engaging portions 81c (claw portions) on the housing 31). The one end portions 15b1 and 16b1 of the outer tubes 15b and 16b can be removed from the housing 31 (withdrawn along the longitudinal direction of the inner wires 15a and 16a).

  Further, in a state where the tube covers 81 and 82 and the one end portions 15b1 and 16b1 of the outer tubes 15b and 16b are removed from the housing 31, the connection members 62 and 72 and the end portions 15a1 and 16a1 of the inner wires 15a and 16a After the rotation restraining members 63 and 73 are removed from the connecting portions, the I-shaped connecting portions y provided on the one end portions 15a1 and 16a1 of the inner wires 15a and 16a are connected to the rotation permissible portions of the connecting members 62 and 72 ( 62b) until it is aligned with the insertion hole 62a of each connecting member 62, 72 and pulled out in the longitudinal direction of the inner wire, the connection between each connecting member 62, 72 and each inner wire 15a, 16a is released. Thus, the coupling between the equalizer 12 and each of the inner wires 15a and 16a can be released. In addition, each rotation suppression member 63, 73 is described above by pulling out in the longitudinal direction of the inner wire in a state where the pair of locking portions (63a) is removed from the projections (62f) of the connection members 62, 72. It can be removed from the connection site.

  On the other hand, the I-shaped connecting portion y provided at the one end portions 15a1 and 16a1 of the inner wires 15a and 16a is inserted through the insertion hole portions (62a) of the connecting members 62 and 72 connected to the equalizer 12, and penetrated. The I-shaped connecting portion y is rotated by a predetermined amount (approximately 90 degrees) in the rotation allowing portion (62b) of each connecting member 62, 72 in a state where the left end of the I-shaped connecting portion y is pushed to the extent that it abuts against the stopper portion 62d. The rotation restraining members 63 and 73 are assembled to the connecting portions of the connecting members 62 and 72 and the one end portions 15a1 and 16a1 of the inner wires 15a and 16a to maintain the state where the I-shaped connecting portion y is rotated by a predetermined amount. Thereby, the equalizer 12 and each inner wire 15a, 16a can be combined.

  Further, in a state where the equalizer 12 and the inner wires 15a and 16a are coupled via the coupling mechanisms D1 and D2, one end portions 15b1 and 16b1 of the outer tubes 15b and 16b are attached to the housing 31 (each inner wire 15a and 16a can be fitted along the longitudinal direction), and the tube covers 81 and 82 are attached to the housing 31 (by fitting the tube covers 81 and 82 into the housing 31, a pair of engaging portions 81c (claw portion) can be engaged with a pair of locking portions 31a (groove portions) provided in the housing 31).

  By the way, in this 1st Embodiment, in the connection state of the equalizer 12 and each inner wire 15a, 16a, the engaging part (62c) of each connection member 62,72 and the I-shaped connection part of each inner wire 15a, 16a Since y can be engaged in the longitudinal direction of the inner wire, and the state where each I-shaped connecting portion y is rotated by a predetermined amount can be held by each rotation restraining member 63, 73, each inner wire 15a. 16a, the I-shaped connecting portion y of each inner wire 15a, 16a is difficult to rotate with respect to each connecting member 62, 72 connected to the equalizer 12, and the equalizer 12 and each inner wire 15a, 16a are not easily rotated. The reliability in the coupled state of the wires 15a and 16a is extremely high.

  In the first embodiment, the rotation restraining members 63 and 73 are elastically engaged with the protrusions (62f) of the connecting members 62 and 72 in a direction orthogonal to the longitudinal direction of the inner wire. In the state where the stopper is released and the elastic repellent engagement is released, the engaging portion (63a) movable along the longitudinal direction of the inner wire, and the insertion hole portion (62a) of each of the connecting members 62, 72 And a suppression portion (63b) that is partially penetrated and that suppresses the rotation of the I-shaped coupling portion y at the penetration portion. For this reason, the highly reliable connection mechanisms D1 and D2 for connecting the equalizer 12 and the I-shaped connection portions y of the inner wires 15a and 16a are connected to the connection members 62 and 72 and the rotation suppression members 63 and 73, respectively. It can be configured with two parts, and can be configured simply and inexpensively.

  In the first embodiment, as described above, the I-shaped connecting portion y (one end portion) of each of the inner wires 15a and 16a is inserted into the housing 31 from the outside of the housing 31, and the equalizer in the housing 31 is inserted. The twelve output portions 12a and 12b can be attached to and detached from each other via the connecting mechanisms D1 and D2, and the one end portions 15b1 and 16b1 of the outer tubes 15b and 16b can be attached to and detached from the housing 31.

  Moreover, the end portions 15b1 and 16b1 of the outer tubes 15b and 16b can be inserted into and removed from the housing 31 along the longitudinal direction of the inner wire, and the tube covers that cover the end portions 15b1 and 16b1 of the outer tubes 15b and 16b. Reference numerals 81 and 82 are detachable from the housing 31, and prevent the end portions 15 b 1 and 16 b 1 of the outer tubes 15 b and 16 b from coming off from the housing 31 when assembled to the housing 31. Each tube cover 81, 82 has a notch portion (81a) that can be inserted into and removed from each outer tube 15b, 16b in a direction perpendicular to the longitudinal direction, and a part of the outer periphery of each outer tube 15b, 16b. A fitting portion (81b) that is fitted and positioned on the housing 31 and an engaging portion (81c) that is detachably engaged with a locking portion 31a provided on the housing 31.

  For this reason, after assembling the various parts to the housing 31, the assembly of the housing side end portions of the cables 15 and 16 is made up of the corresponding component parts (inner wires 15a and 16a, outer tubes 15b and 16b, The rotation restraining members 63 and 73 and the tube covers 81 and 82) can be assembled, and the cables 15 and 16 are assembled to the housing 31 in the middle of the electric parking brake device or the vehicle production line. Productivity is extremely good because there is no need to handle it in a wet state. Moreover, the attachment / detachment (disassembly / reassembly) of the housing side end of each cable 15, 16 can be performed by attaching / detaching only the components of the corresponding part without disassembling the housing 31, and the serviceability in the market is improved. Very good.

  In the first embodiment described above, the protrusions (62f) of the connecting members 62 and 72 are elastically engaged with each other in the direction orthogonal to the longitudinal direction of the inner wire to prevent the inner wires from coming off and In a state where the engagement is released, the engaging portion (63a) movable along the longitudinal direction of the inner wire and the insertion hole portion (62a) of each of the connecting members 62 and 72 are partially penetrated and penetrated. The rotation restraining members 63 and 73 that are integrally provided with a restraining portion (63b) that restrains the rotation of the I-shaped connecting portion y at the portion are employed, but the second shown in FIGS. As in the embodiment, the connection member 162 may be used instead of the connection members 62 and 72, and the rotation suppression member 163 may be used instead of the rotation suppression members 63 and 73.

  The connecting member 162 of the second embodiment has substantially the same configuration as the connecting member 62 of the first embodiment, except that it does not include the protruding piece portion 62e and the protrusion 62f of the first embodiment described above. An insertion hole 162a through which the I-shaped connecting portion y of the inner wire 15a can be inserted in the longitudinal direction of the inner wire 15a, and rotation around the insertion hole of the I-shaped connecting portion y inserted through the insertion hole 162a. And the I-shaped connecting portion y in a state where the I-shaped connecting portion y inserted through the insertion hole 162a and rotated therethrough is rotated by a predetermined amount (approximately 90 degrees) by the rotation allowing portion 162b. And an engaging portion 162c that can be engaged in the longitudinal direction of the inner wire 15a at the wire side end, and the I-shaped connecting portion y of the inner wire 15a is inserted through the insertion hole 162a and penetrates therethrough. Abutable And a stopper portion 162d on the wire end. For this reason, the I-shaped connecting portion y is allowed to rotate around the insertion hole 162a in a state where the I-shaped connecting portion y is pushed to such an extent that it contacts the stopper portion 162d.

  The rotation restraining member 163 of the second embodiment is elastically engaged with an annular protrusion z provided on the inner wire 15a in a direction orthogonal to the longitudinal direction of the inner wire 15a and is prevented from coming off. In a state where the general engagement is released, a pair of engaging portions 163a movable along the longitudinal direction of the inner wire 15a and an insertion hole portion 162a of the connecting member 162 are inserted, and a part thereof penetrates at a through portion. A pair of restraining portions 163b that restrains the rotation of the I-shaped connecting portion y of the inner wire 15a are integrally provided. Further, the rotation inhibiting member 163 is formed with a rectangular hole 163c into which the I-shaped connecting portion y of the inner wire 15a can be inserted.

  In the second embodiment shown in FIGS. 7 to 9, it is possible to remove the one end 15 b 1 of the outer tube 15 b from the housing 31 by removing the tube cover 81 from the housing 31. Further, in a state where the one end portion 15b1 of the outer tube 15b is extracted from the housing 31, the pair of locking portions 163a are expanded to release the engagement with the annular protrusion z, whereby the rotation restraining member 163 is taken out from the housing 31. It is possible. Furthermore, in this state, the inner wire 15a can be extracted from the connecting member 162 by rotating the I-shaped connecting portion y of the inner wire 15a by approximately 90 degrees and pulling it out. For this reason, also in this 2nd Embodiment, the effect similar to above-mentioned 1st Embodiment is acquired.

  Further, in the first embodiment described above, the end portions 15b1 and 16b1 of the outer tubes 15b and 16b are prevented from being detached from the housing 31 by the tube covers 81 and 82 covering the outer ends 15b1 and 16b1, respectively. As in the third embodiment shown in FIG. 13, it is possible to employ a hawk-like member 281 instead of the tube covers 81 and 82. In addition, in the third embodiment shown in FIGS. 10 to 13, a connecting member 262 is employed instead of the connecting members 62 and 72 of the first embodiment, and each of the first embodiment described above. Instead of the rotation suppression members 63 and 73, a rotation suppression member 263 is adopted.

  The fork-like member 281 of the third embodiment is detachable from the housing 231 and is inserted into a pair of slits 231a provided in the housing 231 by a pair of legs 281a. Each leg portion 281a can abut on one end portion 215b1 of the outer tube 215b fitted to the housing 231 at an intermediate portion thereof, and prevents the end portion 215b1 of the outer tube 215b from coming off. Further, a claw portion 281a1 that can be engaged with the housing 231 is provided at the tip end portion of each leg portion 281a, and the fork-like member 281 is prevented from coming off from the housing 231 by the claw portion 281a1.

  The connecting member 262 according to the third embodiment includes an insertion hole portion 262a through which the I-shaped connection portion y of the inner wire 15a can be inserted in the longitudinal direction of the inner wire 15a, and an I-shape inserted through the insertion hole portion 262a. Rotation permitting portion 262b allowing rotation around the insertion hole of the connecting portion y, and I-shaped connecting portion y inserted through the insertion hole portion 262a rotate by a predetermined amount (approximately 90 degrees) at the rotation allowing portion 262b. In this state, the I-shaped connecting portion y and the engaging portion 262c that can be engaged in the longitudinal direction of the inner wire 15a are provided at the wire side end portion. In addition, a stopper plate 262d that can come into contact with the I-shaped connecting portion y of the inner wire 15a through the insertion hole 262a is fixed to the connecting member 262. For this reason, the I-shaped connecting portion y is allowed to rotate around the insertion hole 262a in a state where the I-shaped connecting portion y is pushed to such an extent that it contacts the stopper plate 262d.

  The rotation restraining member 263 of the third embodiment is elastically engaged with an engagement hole 262e provided in the connecting member 262 in a direction orthogonal to the longitudinal direction of the inner wire 15a and is prevented from coming off. In a state where the repellent engagement is released, a pair of engaging portions 263a movable along the longitudinal direction of the inner wire 15a and an insertion hole portion 262a of the connecting member 262 are inserted and partially penetrated into the through portion. And a pair of suppressing portions 263b that suppress the rotation of the I-shaped connecting portion y of the inner wire 15a. Further, the rotation restraining member 263 is formed with an insertion hole 263c through which the I-shaped connecting portion y of the inner wire 15a can be inserted, and between the above-described locking portions 263a and the engaging holes 262e of the connecting member 262. A pair of operation lever portions 263d for releasing the engagement is formed.

  In the third embodiment shown in FIGS. 10 to 13, the one end 215 b 1 of the outer tube 215 b can be extracted from the housing 231 by extracting the hawk-like member 281 from the housing 231. Further, in a state where the one end portion 215b1 of the outer tube 215b is removed from the housing 231, the pair of operation lever portions 263d are brought close to each other to release the engagement between the locking portions 263a and the engagement holes 262e, thereby preventing the rotation suppression member. 263 can be taken out of the housing 231. Further, in this state, the inner wire 15a can be extracted from the connecting member 262 by rotating the I-shaped connecting portion y of the inner wire 15a by approximately 90 degrees and pulling it out. For this reason, also in this 3rd Embodiment, the same operation effect as above-mentioned 1st Embodiment is acquired.

  In each of the above-described embodiments, the cable transmission mechanism according to the present invention is applied to the vehicle parking brake device. However, the cable transmission mechanism according to the present invention is also applicable to various operating devices other than the vehicle parking brake device. It is possible to carry out by carrying out or changing suitably.

1 is a partially broken plan view of a first embodiment in which a cable transmission mechanism according to the present invention is applied to a vehicle parking brake device. It is a principal part enlarged plan view of FIG. FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. 2. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. FIG. 6 is a partial front view of a single rotation suppression member shown in FIGS. 1, 2, 4, and 5. It is a principal part enlarged plan view equivalent to FIG. 2 which shows 2nd Embodiment of this invention. It is sectional drawing equivalent to FIG. 4 of 2nd Embodiment shown in FIG. It is a partial front view of the rotation suppression member single-piece | unit shown in FIG. 7 and FIG. It is a principal part enlarged plan view equivalent to FIG. 2 which shows 3rd Embodiment of this invention. It is sectional drawing equivalent to FIG. 4 of 3rd Embodiment shown in FIG. It is a figure which shows the relationship between the housing shown in FIG.10 and FIG.11, and a hawk-shaped member. It is a partial front view of the rotation suppression member simple substance shown in FIG. 10 and FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 12 ... Equalizer (drive member), 12a, 12b ... Output part, 13, 14 ... Parking brake (operation member), 15, 16 ... Cable, 15a ... Inner wire, 15a1 ... One end part of an inner wire, y ... I shape Connection part, 15b ... Outer tube, 15b1 ... One end part of outer tube, 31 ... Housing, D1, D2 ... Connection mechanism, 62 ... Connection member, 62a ... Insertion hole part, 62b ... Rotation permission part, 62c ... Engagement part, 63 ... Rotation suppression member, 63a ... Locking portion, 63b ... Suppression portion, 81 ... Tube cover, 81a ... Notch portion, 81b ... Fitting portion, 81c ... engagement portion

Claims (5)

A cable (15) interposed between the drive member (12) and the actuating member (13) and capable of transmitting a tensile force from the drive member (12) to the actuating member (13) is provided to the drive member (12). An inner wire (15a) connected at one end (15a1) via the connecting mechanism (D1) and connected to the actuating member (13) at the other end, and both ends of the inner wire (15a) In the cable transmission mechanism provided with an outer tube (15b) that covers the outer periphery other than and has each end held immovably by a holding member,
An I-shaped connecting portion (y) orthogonal to the longitudinal direction of the inner wire (15a) is integrally provided at one end (15a1) of the inner wire (15a),
The connection mechanism (D1) is inserted through the insertion hole (62a) through which the I-shaped connection (y) can be inserted in the longitudinal direction of the inner wire (15a) and the insertion hole (62a). A rotation allowing portion (62b) that allows rotation of the penetrating I-shaped connecting portion (y) around the insertion hole, and the I-shaped connecting portion (y) that is inserted through the inserting hole portion (62a) and passes therethrough. The I-shaped connecting portion (y) and the engaging portion (62c) that can be engaged in the longitudinal direction of the inner wire (15a) with the rotation allowing portion (62b) rotated by a predetermined amount. A connecting member (62) that is provided at the wire side end and is connected to the driving member (12) at the driving side end, and one end of the connecting member (62) and the inner wire (15a). (15a1) is detachably assembled to the connecting portion, and the I-shaped Cable transmission mechanism, characterized in that it comprises forming unit capable of holding rotation inhibiting member a predetermined amount of rotation state of (y) (63).   The cable transmission mechanism according to claim 1, wherein the rotation restraining member (63) is a part of the connecting member (62) or the inner wire in a direction orthogonal to a longitudinal direction of the inner wire (15a). A locking portion (15a) that is movable along the longitudinal direction of the inner wire (15a) in a state in which it is elastically engaged with a part of (15a) and is prevented from coming off and released. 63a) and a suppression portion (63b) that is inserted through the insertion hole portion (62a) and partially penetrates and suppresses the rotation of the I-shaped connection portion (y) at the penetration portion. A cable transmission mechanism characterized by that.   The cable transmission mechanism according to claim 1 or 2, wherein the operating member (13) is provided in an operating portion of a vehicle parking brake, and the driving member (12) is provided in a housing (31) assembled to a vehicle body. The driving force generated by the parking brake operation can be output at the output portion (12a), and one end portion (15a1) of the inner wire (15a) is connected to the housing (31) from the outside of the housing (31). 31) can be attached to and detached from the output part (12a) of the driving member through the connecting mechanism (D1) through the connecting part (D1), and one end part (15b1) of the outer tube (15b) can be attached to and detached from the housing (31). A cable transmission mechanism characterized by being.   The cable transmission mechanism according to claim 3, wherein one end (15b1) of the outer tube (15b) is detachable along the longitudinal direction of the inner wire (15a) with respect to the housing (31), A tube cover (81) that covers one end (15b1) of the outer tube (15b) is detachable from the housing (31), and the outer tube (15b) is attached to the housing (31). One end portion (15b1) of the cable is prevented from coming off from the housing (31).   5. The cable transmission mechanism according to claim 4, wherein the tube cover (81) is capable of being inserted into and removed from the outer tube (15 b) in a direction perpendicular to the longitudinal direction thereof, and the outer cover (81 a). A fitting portion (81b) that is positioned by being fitted to a part of the outer periphery of the tube (15b), and an engaging portion that is detachably engaged with a locking portion (31a) provided in the housing (31). 81c). A cable transmission mechanism characterized by comprising:

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