JP4459075B2 - Operation wire mounting structure - Google Patents

Description

  The present invention relates to a mounting structure of an operation wire used in a lock device such as a two-wheeled vehicle, a transmission, a brake device, and the like, and more particularly, a locking body formed at the distal end of the operation wire due to loosening of the operation wire. The present invention relates to a structure for attaching an operation wire for preventing separation from a stop portion or incomplete locking.

  2. Description of the Related Art Conventionally, an operation wire used in a lock device such as a two-wheeled vehicle, a transmission, a brake device, or the like has a locking body formed at the tip of the operation wire locked in a locking hole of the device main body. This operation wire has a problem that the locking body is detached from the locking hole due to looseness during operation. For this reason, a structure for preventing the locking body at the distal end of the operation wire from being completely detached from the locking hole has been proposed.

  For example, in the structure described in Patent Document 1, when the locking body 106 of the operation wire 104 is locked in the engagement hole 102 of the locking lever 100 as shown in FIG. Is inserted into the first hole 102A from the direction of the arrow, and then the operation wire 104 is rotated by 90 degrees in the lateral direction, and the terminal portion of the operation wire 104 is guided into the second hole 102B to be locked. Thereby, when the operation wire 104 is operated with the apparatus shown in FIG. 9B, it is possible to prevent the locking body 106 of the operation wire 104 from being completely detached from the engagement hole 102.

  However, in this structure, when there is an obstacle on the insertion side of the locking body 106 into the engagement hole 102 shown in FIG. 9A, it is necessary to perform the locking operation of the operation wire 104 after removing the obstacle. Yes, workability is poor. Moreover, in the case of a structure in which an obstacle cannot be removed, the locking operation is very difficult.

  Further, as shown in FIG. 9B, when the operation wire 104 is loosened or when the locking lever 100 returns slower than the speed at which the operation wire 104 returns in the axial direction, the locking body 106 of the operation wire 104 is locked. There is a risk that the lever 100 may be held obliquely by the distal end portion or the bent portion 100A. In such a case, the locking device does not function normally.

  In order to prevent such a phenomenon, it is necessary to increase the spring force of the spring 108 that is locked to the locking lever 100 and the frame 109 to speed up the return of the locking lever 100. If it is strengthened, the operation of the locking lever 100 becomes heavy.

  In the structure described in Patent Document 2, as shown in FIG. 10, the engaging portion 114 and the wire insertion hole 116 are formed in the through hole 112 of the operation lever 110, and the operation wire 118 is connected to the wire insertion hole 116. The locking body 120 of the operation wire 118 is locked to the engaging portion 114. In this structure, since the through hole 112 is provided on the rotation center 110A side of the operation lever 110 with respect to the engaging portion 114 and the wire insertion hole 116, even if the operation wire 118 is loosened by the operation of the operation lever 110, for example. Since the locking body 120 is always urged in the direction of the arrow by the elastic restoring force of the bending operation wire 118, the locking body 120 is prevented from being completely detached from the engagement portion 114.

  However, when the through hole 112 is provided on the operation portion side of the operation lever 110 (on the side opposite to the rotation center 110 </ b> A) with respect to the engagement portion 114 and the wire insertion hole 116, the operation wire 104 is loosened by the operation of the operation lever 110. When this occurs, the locking body 120 may be disengaged from the engaging portion 114. Therefore, in order to prevent detachment of the locking body 120 of the operation wire 118 from the engaging portion 114, the position of the through hole 112 is limited as described in Patent Document 2, or the shape of the through hole 112 is complicated. Need to form.

  Similarly to Patent Document 1, when the operation wire 118 is loosened or the return speed of the operation wire 118 is slower than the return speed of the operation lever 110, the locking body 120 may be held obliquely by the engaging portion 114. In such a case, the device will not function normally.

  In order to prevent such a phenomenon, it is necessary to apply a certain amount of tension to the operation wire 118 from the beginning, but this makes the operation of the operation lever 110 heavy.

Further, in the structure described in Patent Document 3, as shown in FIG. 11A, a locking groove 130A is formed in the bent portion 130B on one end side of the C-arm 130, and the operating direction of the operation wire 132 ( The operation wire 132 is inserted from the upper side in the drawing, and the locking body 134 of the operation wire 132 is locked in the locking groove 130A. For this reason, even if there are obstructions before and after the locking groove 130A and right and left, there is no hindrance to the mounting of the operation wire 132. Further, as shown in FIG. 11B, a cover 136 is attached so as to cover the bent portion 130B and the locking body 134 in order to prevent the locking body 134 of the operation wire 132 from coming off from the locking groove 130A. Is done. For this reason, even if the operation wire 132 is loosened or the returning speed of the locking body 134 is slower than the returning speed of the C-arm 130, there is no possibility that the locking body 134 will come off the locking groove 130A. However, in such a structure, since the cover 136 is attached, man-hours and costs are increased.
JP 7-269201 A JP-A-62-79695 Japanese Utility Model Publication No. 7-4284

  The present invention has been made in view of the above-described problems, and the operation wire is disconnected or incomplete without complicating the structure for locking the terminal portion of the operation wire or attaching a cover or the like. An operation wire mounting structure that can prevent locking, can operate the operation wire with a light operating force, and can improve workability when locking the terminal portion of the operation wire. The purpose is to provide.

The invention according to claim 1 is an operation wire mounting structure in which an operation wire that moves in the axial direction to operate the operation device is attached to the operation device main body, and is provided at a terminal portion of the operation wire, and a tip portion is a hemisphere The cylindrically shaped locking member is guided in the axial direction of the locking body, the cross-sectional shape is a circular guide part, and the guide part communicates with the guide part. An insertion port that is formed in an oblique direction and has a circular cross-sectional shape for inserting the locking body into the guide portion from an oblique direction, and is formed continuously with the insertion port at the end portion of the guide portion, through the insertion port. in Rukoto is inserted to the operating wire, the operating wire characterized by having a, a through hole that does not leave the locking member which is engaged with the end portion with is positioned in the axial direction of the lock body Yes.

In the invention described in claim 1, the locking member provided in the terminal portion of the operating wire is provided with a guide portion for guiding the axial direction of the locking body, in the guide direction of the guide portion a locking body by inserting the insertion port formed in an oblique direction against, inserted obliquely into the guide portion. The end portion of the guide portion is inserted through hole is formed continuously with the insertion opening, in Rukoto is inserted the operation wire in the insertion hole through the insertion port, to position the operating wire in the axial direction of the locking body. Thereby, the locking body of the operation wire is locked to the terminal portion without being detached from the communication hole and is guided to the guide portion.

  For this reason, the operation wire can be attached to the operation device main body by a simple operation of simply inserting the locking member of the operation wire into the insertion port. Even if the operation wire is loosened or there is a time difference between the return of the operation wire and the operation lever of the operation device body, the locking body is guided by the guide part, so that the operation wire may be disconnected or Locking in the complete state can be reliably prevented. Furthermore, since the operation wire is not detached, it is not necessary to apply tension to the operation wire, and the operation wire can be operated with a light operation force.

Further, since the locking body of the operation wire is made of a cylindrical member having a hemispherical tip, the locking body can be easily inserted into the insertion port having a circular cross section. Further, when the operation wire is inserted into the insertion hole through the insertion port, the hemispherical tip of the locking body rotates smoothly, and the cylindrical locking body is guided by the guide section having a circular cross section. The This further simplifies the operation of attaching the operation wire.

According to a second aspect of the invention, the mounting structure of the operation wire according to claim 1, the locking member mounted on the operating device main body, said guide portion and said insertion opening and said insertion hole is formed It is characterized by having.

According to the second aspect of the present invention, the guide member, the insertion port, and the insertion hole are formed in the locking member attached to the operating device main body, and the operating wire is easily attached to the locking member of the operating device main body. Can do.

  In the operation wire mounting structure according to the present invention, it is easy to simply insert the operation wire locking body into the insertion slot without complicating the structure for locking the operation wire locking body or attaching a cover or the like. The operation wire can be attached to the operation device main body with a simple operation, and the workability can be improved. Even if the operation wire is loosened or there is a time difference between the return of the operation wire and the operation lever of the operation device main body, it is possible to reliably prevent the wire from coming off or being locked in an incomplete state. Furthermore, it is possible to operate the operation wire with a light operation force.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS The best embodiment of the operation wire mounting structure of the present invention will be described below with reference to the drawings.

  FIG. 1 is a partial perspective view showing a handle lock mechanism 10 of a bicycle 1 using an operation wire mounting structure according to an embodiment of the present invention. FIG. 2 is a partial perspective view of the handle lock mechanism 10 shown in FIG. 1 viewed from another direction.

  As shown in FIGS. 1 and 2, the handle lock mechanism 10 includes a lock device 16 provided at a connection portion between a head pipe 14 that is a body frame of the bicycle 1 and the handle 12, and a grip 12 a of the handle 12. An operating device 18 that is attached and operates the locking device 16 and a wire-like operating member 20 that connects the operating device 18 and the locking device 16 are provided. The handle 12 branches to the left and right at the upper part of the locking device 16 and extends upward, and a front car 22 is attached between these extended portions.

  As shown in FIG. 3, the locking device 16 includes an upper one 24 that is fixed to the upper end of the head pipe 14. A flange portion 24a is extended around the periphery of the upper one 24, and an engaging portion 24b made of corrugated irregularities is formed around the flange portion 24a. An upper ball push 26 is disposed on the upper one 24 via a retainer 25. This upper claw 26 is screwed to a front fork stem 32 that rotates integrally with the handle 12 (see FIG. 1). The front hawk stem 32 has an end inserted into the head pipe 14 and can rotate relative to the head pipe 14. A base assembly 27 having a fixing piece 39 is fixed to the front fork stem 32 on the upper part of the upper ball press 26 by a detent. Further, a main body cover 28 is attached so as to cover the upper part and the periphery of the base assembly 27. A rotation washer 29 fitted to the front fork stem 32 is pressed against the upper surface of the main body cover 28, and after the intermediate nut 30 is screwed onto it, the lock nut 31 is screwed to the front fork stem 32 and the whole. Is tightened.

  As shown in FIG. 4, the base assembly 27 includes a base 37 that is fixed to the front fork stem 32, and an arm 38 that is swingably attached to the base 37. One end of the arm 38 is bent downward, and a fixed piece 39 is extended. The fixed piece 39 is formed with a tooth-shaped portion 39a that is engaged with the engaging portion 24b. The shaft 41 is inserted into the opening 37 a formed in the base 37 and the openings 38 a and 39 b formed in the arm 38 and the fixed piece 39, and the bolt 40 is fastened to the shaft 41. A return spring 42 is attached to the shaft 41 between the arm 38 and the fixed piece 39, one end of the return spring 42 is locked to the locking portion 37 b of the base 37, and the other end is brought into contact with the fixed piece 39. The As a result, as shown in FIG. 6, the fixed piece 39 is urged in the direction of the engaging portion 24 b by the return spring 42, and the arm 38 can swing around the shaft 41.

  As shown in FIG. 4, the other end portion of the arm 38 extends around the engaging portion 24b (see FIG. 6), and the extending end portion is bent so that the support portion 38b extends in the vertical direction. Is formed. An opening 38c is formed in the support portion 38b, and a nut 43 is inserted into the opening 38c and the spring receiving bolt 44 is fastened. A release spring 45 for releasing the engagement between the fixed piece 39 and the engagement portion 24b is attached to the nut 43, so that the support portion 38b can move in the axial direction. The strength of the release spring 45 can be adjusted by the tightening position of the spring receiving bolt 44.

  As shown in FIGS. 5 and 6, the wire-like operation member 20 has an inner wire 46, which is an operation wire, movably inserted into the outer wire 21, and the inner wire 46 is a nut that is a locking member. In order to attach to 43, the operation wire attachment structure 2 of this embodiment is employed.

  Next, the operation wire mounting structure 2 will be described.

  As shown in FIG. 8B, a cylindrical locking body 56 larger than the diameter of the inner wire 46 is formed at the end of the inner wire 46, and the tip 56a of the locking body 56 is hemispherical. ing. Further, as shown in FIGS. 7 and 8B, a flange portion 53 is formed at the tip of the nut 43, and inside the nut 43 and the flange portion 53, a cylinder in which a locking body 56 is guided. A guide hole 53a is formed. The flange portion 53 is formed with a cylindrical insertion port 53b into which the locking member 56 is inserted in an oblique direction with respect to the axial direction of the guide hole 53a. The insertion port 53b communicates with the guide hole 53a. Yes. Further, a wire insertion hole 53d that holds the inner wire 46 in the axial direction of the nut 43 is formed in the end portion 53c of the flange portion 53 continuously with the insertion port 53b. The wire insertion hole 53d has a shape that does not allow the locking body 56 to be detached. When the inner wire 46 is held in the wire insertion hole 53d, the locking body 56 is locked to the terminal portion 53c and guided to the guide hole 53a.

  As shown in FIG. 5, the end portion 47 of the outer wire 21 through which the inner wire 46 is inserted is attached to a holding portion 37 c formed on the base 37. The other end of the inner wire 46 is connected to the operating device 18 shown in FIG. Then, by pushing the operation lever 62 (see FIG. 1), the inner wire 46 is pulled in the axial direction as shown in FIG. Further, when the release lever 64 (see FIG. 1) is pushed, the inner wire 46 moves in the axial direction and returns to the original position as shown in FIG.

  Next, after describing the operation of the handle lock mechanism 10, the operation of the operation wire mounting structure 2 of the present embodiment will be described.

  When the handle 12 is unlocked by the operating device 18 (see FIG. 1), as shown in FIG. 5, the inner wire 46 is moved to the curved portion 28a on the back side of the main body cover 28 in the lock device 16, The arm 38 supported by the nut 43 swings back.

  On the other hand, when the handle 12 is locked, the operation lever 62 of the operation device 18 shown in FIG. 1 is pushed. As a result, as shown in FIG. 6, the inner wire 46 is pulled in the lock device 16, and the support portion 38 b is moved by the movement of the nut 43, and the arm 38 swings with respect to the base 37 with the shaft 41 as a fulcrum. As a result, the tooth portion 39a of the fixed piece 39 engages with the engaging portion 24b, and the rotation of the front fork stem 32 connected to the handle 12 is locked. At this time, since the arm 38 is extended around the engaging portion 24b and the distance from the shaft 41 of the fulcrum to the support portion 38b is increased, even if the pulling force of the inner wire 46 is small, the arm 38 The fixed piece 39 moves in the direction in which it engages with the engaging portion 24b, and engages securely. For this reason, the whole locking device 16 can be made into a compact shape. Moreover, since the tension | tensile_strength of the inner wire 46 is small, while being able to reduce the operation input at the time of a lock | rock, the lock device 16 whole can be reduced in weight.

  In such a handle lock mechanism 10, when the inner wire 46 is attached to the nut 43, as shown in FIG. 8A, the distal end portion 56 a of the locking body 56 is obliquely upward (in the circular insertion port 53 b of the nut 43 ( Insert from the direction of arrow A). The front end portion 56a of the locking body 56 is hemispherical and can be easily inserted into the insertion port 53b. Then, with the locking body 56 inserted into the guide hole 53a, as shown in FIG. 8 (B), the inner wire 46 is rotated in the lateral direction (arrow B direction) and inserted into the wire insertion hole 53d, The nut 43 is positioned in the axial direction. As a result, the locking body 56 is rotated and inserted into the guide hole 53a, and the locking body 56 is locked to the end portion 53c, whereby the attachment of the inner wire 46 is completed. At this time, since the front end portion 56a of the locking body 56 is hemispherical, the locking body 56 rotates smoothly in the guide hole 53a.

  In the state where the inner wire 46 is attached, the distal end portion 56a of the locking body 56 is located on the back side of the nut 43 with respect to the insertion port 53b. For this reason, as shown in FIG. 8C, even when the inner wire 46 is loosened by the operation of the inner wire 46, the locking body 56 is guided by the guide hole 53a and moves to the back side, and does not come off from the insertion port 53b. .

  In such an operation wire mounting structure 2, the inner wire 46 is inserted into the insertion hole 53 b and the inner wire 46 is inserted into the wire insertion hole 53 d through the simple operation of inserting the inner wire 46 into the guide hole 53 a of the nut 43. Can be installed on. Even if the inner wire 46 is loosened or there is a time difference between the return of the inner wire 46 and the arm 38 of the locking device 16, the locking member 56 is guided by the guide hole 53a. And locking in an incomplete state can be reliably prevented. Further, since the inner wire 46 is not detached, it is not necessary to apply tension to the inner wire 46, and the inner wire 46 can be operated with a light operating force.

  In addition, in the said embodiment, although the operation wire attachment structure 2 is used for the handle lock mechanism 10, it is not limited to this structure. For example, it is possible to apply the operation wire mounting structure of the present invention to a device operated by an operation wire, such as a transmission or a brake device. The operation wire mounting structure of the present invention is also applicable to vehicles other than bicycles.

It is a fragmentary perspective view which shows the handle lock mechanism in which the operation wire attachment structure which concerns on one Embodiment of this invention was used. It is a fragmentary perspective view which shows the other direction of the handle lock mechanism in which the operation wire attachment structure concerning one Embodiment of this invention was used. It is a disassembled perspective view which shows the locking device of the handle lock mechanism in which the operation wire attachment structure which concerns on one Embodiment of this invention was used. It is a disassembled perspective view which shows the base assembly of the locking device in which the operation wire attachment structure concerning one Embodiment of this invention was used. It is a block diagram which shows the lock release state of the locking device in which the operation wire attachment structure which concerns on one Embodiment of this invention was used. It is a block diagram which shows the locked state of the locking device in which the operation wire attachment structure which concerns on one Embodiment of this invention was used. It is a perspective view which shows the latching member of the locking device in which the operation wire attachment structure which concerns on one Embodiment of this invention was used. It is a half cut perspective view explaining the attachment work of the wire in the operation wire attachment structure which concerns on one Embodiment of this invention. It is a block diagram which shows the 1st example of the conventional operation wire attachment structure. It is a block diagram which shows the 2nd example of the conventional operation wire attachment structure. It is a block diagram which shows the 3rd example of the conventional operation wire attachment structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bicycle 2 Operation wire attachment structure 10 Handle lock mechanism 12 Handle 14 Head pipe 16 Lock device 18 Operation device 20 Operation member 21 Outer wire 24 Upper one 24b Engagement part 25 Retainer 27 Base assembly 28 Main body cover 29 Non-turn washer 30 Middle nut 31 Lock nut 32 Front fork stem 37 Base 37a Opening hole 37b Locking part 37c Holding part 38 Arm 38b Supporting part 38c Opening hole 39 Fixed piece 39a Tooth part 40 Bolt 41 Shaft 42 Return spring 43 Nut (locking member)
44 Bolt 45 Release spring 46 Inner wire (operation wire)
47 End 53 Flange (Locking member)
53a Guide hole (guide part)
53b Insertion port 53c Termination part 53d Wire insertion hole (insertion hole)
56 Locking body 56a Tip 62 Operation lever 64 Release lever

Claims (2)

An operating wire mounting structure for mounting an operating wire that moves in the axial direction to operate the operating device to the operating device body,
A guide portion having a circular cross-sectional shape for guiding a locking body made of a cylindrical member provided at a terminal portion of the operation wire and having a hemispherical tip portion in the axial direction of the locking body;
An insertion port that communicates with the guide portion and is formed obliquely with respect to the guide direction of the guide portion, and has a circular cross-sectional shape for inserting the locking body into the guide portion from the oblique direction;
Formed continuously with the insertion opening at the end portion of the guide portion, in Rukoto by inserting the operating wire through the insertion port, the operating wire to the terminal end with is positioned in the axial direction of the lock body An insertion hole that does not release the locked locking body;
An operation wire mounting structure characterized by comprising: The operation wire mounting structure according to claim 1 , wherein the guide member, the insertion port, and the insertion hole are formed in a locking member attached to the operation device main body.

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