JP2005147393A - Long size body end fixing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a long size body end fixing apparatus capable of easily conducting assembly to a matching member and fixation of a long size body such as a control cable and the like. <P>SOLUTION: The long size body end fixing apparatus is equipped with a key 2 having a base part 20 with a second engaging face 201 for engaging with an arbitral part in axial direction of a first engaging face 101 of the long size body 1 having the first engaging face 101 for extending in the axial direction at an outer peripheral side of an end part 10 and a pair of mutually and elastically deformable arm parts 26 with a engaging fist claw part 261 protruding from the base part 20, a storing chamber 31 for storing the end part 10 of the long size body 1, a fixing body 3 having a key mounting hole 32 with a second claw part 326, with the key 2 for fixing the end part 10 to the storing chamber 31 at an arbitral axial direction position by engaging the first engaging face 101 and the second engaging face 201 of the end part 10 which are stored in the storing chamber 31 is inserted in a direction crossing the axis of the end part 10, for engaging with the engaging first claw part 261 and a lock 4 for fixing the key 2 mounted in the key mounting hole 32. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a long body end fixing device for fixing a long body such as a control cable, and more particularly to a long body end fixing device capable of adjusting the length of a long body.

  The control cable is composed of a flexible cylindrical outer and a flexible inner that is housed in the outer and movable in the axial direction relative to the outer. For example, a transmission such as an automobile, an accelerator, a throttle, a clutch, a brake, It is also used for operations such as window regulators.

  When the control cable is used in the various devices described above, the outer is fixed, and one end of the inner is fixed to the operation side device (for example, an accelerator pedal) and the other end is fixed to the driving side device (for example, the throttle). Therefore, when the control cable is disposed in various devices that are mating members, it is necessary to adjust the length of the control cable before attaching it.

  Patent Document 1 is a document disclosing a device capable of adjusting the length of a control cable. In Patent Document 1, a rod-like member formed on the end of the cable and having a saw-tooth row on the outer surface is inserted into the cylindrical member in the axial direction, and the length of the cable is adjusted. The locking member and the sawtooth row member are locked by inserting the locking member in the axial direction from the opened window hole, and the length of the cable is fixed. At this time, the wedge-shaped protrusion formed on the side surface of the locking member is fitted into the split groove formed in the cylindrical member (see Patent Document 1 and FIG. 6), whereby the locking member is cylindrical. Inserted into the member.

  The device of Patent Document 1 has a stopper as a separate member that fixes the locking member to the cylindrical member, although it is not described in the specification because the protrusion easily moves when a force is applied to the locking member. . By using a stopper, the locking member and the cylindrical member can be fitted during transportation, and the locking member and the cylindrical member can be unfitted during use of the control cable. be able to.

However, depending on the form of the stopper, it may not be possible to release the stopper after fixing with the stopper, and even if the stopper can be released, the operation of fixing and releasing the stopper is inconvenient. It may occur.
JP-A-10-82414

  An object of this invention is to provide the elongate body end fixing apparatus which can perform the assembly | attachment to a counterpart member and fixation of elongate bodies, such as a control cable, easily.

  The elongated body end fixing device of the present invention is engaged with an arbitrary portion in the axial direction of the first engagement surface of the elongated body having a first engagement surface extending in the axial direction on the outer peripheral side of the end portion. A key that has a base portion having two engaging surfaces, a key that protrudes from the base portion, has a locking first claw portion, and has a pair of arm portions that can be elastically deformed with each other, and a housing for storing the end portion of the elongated body The key for fixing the end portion to the storage chamber at an arbitrary axial position by engaging the first engagement surface and the second engagement surface of the chamber and the end portion stored in the storage chamber. A fixed body having a key mounting hole having a second claw portion inserted in a direction intersecting with the axis of the end portion and locking with the locking first claw portion; and a key mounted in the key mounting hole And a lock for fixing.

  In the long body end fixing device of the present invention, it is desirable that the long body is an inner or outer of a control cable.

  Moreover, it is preferable that the storage chamber of the fixed main body has a lateral opening that is mounted from a direction in which the end portion intersects the axis.

  The base portion of the key has a U-shaped engagement groove that engages with the outer peripheral surface of the end portion from a direction intersecting the axis of the end portion, and the second engagement surface defines the engagement groove. It is preferable to be provided on the bottom surface of the groove. Further, it is preferable that the pair of arm portions extend at a predetermined distance from the base portion in parallel with the depth direction of the engagement groove from the tip portions on both sides facing the engagement groove of the base portion.

  The lock is preferably mounted between the pair of arm portions to prevent displacement of the arm portions. Moreover, it is preferable that the fixed main body has a guide holding portion that holds the lock in a reciprocable manner.

  The first engaging surface is formed on the outer peripheral side of the end of the elongated body and has a male thread surface having a thread that extends in a spiral manner, or the outer peripheral side of the end of the elongated body makes a ring. A first parallel groove surface having a screw thread extending parallel to the axial direction, wherein the second engagement surface is engaged with a female screw surface screwed with the male screw surface or the first parallel groove surface; Two parallel groove surfaces are desirable. At this time, the screw thread of the second engagement surface has a smaller tensile strength than the screw thread of the first engagement surface, and the axial thickness of the effective diameter of the screw thread of the second engagement surface is It is desirable that it is thicker than the thickness of the thread on the first engagement surface. Moreover, it is desirable that the thread angle of the first engagement surface and the second engagement surface is 35 ° or less.

  According to the long body end fixing device of the present invention, the key includes a key that engages with the end of the long body, a fixing main body that stores the end of the long body and the key, and a lock that fixes the key. With a simple configuration, the long body can be reliably fixed after being adjusted to a desired length. Further, by elastically deforming the arm portion of the key, the locking first claw portion formed on the arm portion and the second claw portion formed on the fixed body can be locked or released. The key can be freely detached from the fixed body. And after fixing the edge part of a long body, since a key is fixed by a lock | rock, misoperation, such as the engagement of the edge part of a long body and a key being cancelled | released, can be prevented.

  Further, when the storage chamber of the fixed body has a lateral opening that is mounted from the direction in which the end of the long body intersects the axis, when using a long body with high rigidity, Even when the fixed position is difficult to work, the end of the long body can be easily stored in the fixed main body.

  Further, when the lock is configured to be mounted between a pair of arm portions formed on the key portion, the displacement of the arm portion can be prevented, and the locking first claw portion and the second claw portion can be prevented during use. It is possible to prevent an erroneous operation such as releasing the engagement with the claw portion and releasing the engagement between the end of the elongated body and the key. Further, when the guide holding portion that holds the lock so as to be able to reciprocate is formed in the fixed body, the lock can be held integrally with the fixed body, and the lock is guided to an appropriate position of the key by the guide holding portion. Therefore, the key can be fixed and released smoothly.

  In addition, the first engagement surface and the second engagement surface have screw threads, and the engagement angle between the first engagement surface and the second engagement surface increases if the angle of the ridge is 35 ° or less. The long body can be securely fixed. In addition, since the strength of the thread is improved by increasing the thickness of the thread having a small tensile strength, the strength of the engaging portion between the first engagement surface and the second engagement surface is increased.

  Below, the best form for implementing the elongate body end fixing device of this invention is demonstrated.

  The long body end fixing device of the present invention is a device for fixing a long body such as a control cable. The long body end fixing device of the present invention has a key, a fixing main body, and a lock.

  Here, the elongate body is not particularly limited as long as it has a shape having a first engagement surface extending in the axial direction on the outer peripheral side of the end portion, but it is preferably the inner or outer of the control cable. Further, the material of the end portion may be appropriately selected in consideration of the desired mechanical strength, and is preferably made of metal or hard resin. Moreover, there is no limitation in particular also in the magnitude | size of an edge part.

  The end of the elongated body has a first engagement surface on the outer peripheral side thereof. The first engagement surface only needs to have a shape that can restrict at least the movement of the elongated body in the axial direction when engaged with a second engagement surface formed on a key described later. Therefore, it is desirable that the end portion has irregularities on its outer peripheral surface. In particular, a male screw surface having a screw thread formed on the outer peripheral side of the end portion and extending in a spiral shape, or a first parallel groove surface having a screw thread extending around the outer peripheral side in a ring shape and extending parallel to the axial direction. It is desirable. The male screw surface may be any one whose end is a normal male screw, or a screw thread formed on the outer peripheral surface of the cylindrical member. Further, the first parallel groove surface is a concavo-convex extending around the outer peripheral surface of the end portion in a ring shape and extending in the axial direction, and the convex portion has a shape similar to that of a screw thread.

  Furthermore, the end of the elongated body may be formed with a protrusion at the tip. By forming the protruding portion, it is possible to prevent the long body from coming out of the storage chamber of the fixed main body after the end portion is stored in the storage chamber of the fixed main body (described later). Further, it can be used as a stopper in the step of confirming the bonding strength between the long body main body and the end portion or in the pretensioning step. Note that the pretensioning step is a step of removing the initial elongation of a cable or the like that is a long body by applying a tensile load in the axial direction of the long body.

  In the elongated body end fixing device of the present invention, the key engages with an arbitrary portion in the axial direction of the first engagement surface of the elongated body having the first engagement surface extending in the axial direction on the outer peripheral side of the end portion. A base portion having a second engaging surface, and a pair of arm portions protruding from the base portion and having a locking first claw portion and elastically deformable with each other.

  The base has a second engagement surface that engages with an arbitrary portion in the axial direction of the first engagement surface of the elongated body. The second engagement surface may have any shape that can restrict at least the movement of the long body in the axial direction when engaged with the first engagement surface formed at the end of the long body. For example, if the first engagement surface is a male screw surface, the second engagement surface may be a female screw surface made of a female screw that is screwed with the male screw, and the first engagement surface may be a first parallel groove surface. For example, the movement of the long body in the axial direction can be restricted by using the second parallel groove surface formed by the concavities and convexities fitted to the concavities and convexities. Moreover, if it is a combination of the engaging surface of the form which many protrusions and the hollow which latches the protrusion latches, rotation can be controlled with the movement to the axial direction of a long body.

Here, FIG. 15 is an axial sectional view of a general screw. In FIG. 15, the lower side is the end (first engagement surface) side of the elongated body, and the upper side is the key (second engagement surface) side. D is the outer diameter of the male screw, D is the valley diameter of the female screw, d ₁ is the valley diameter of the male screw, D ₁ is the inner diameter of the female screw, d ₂ and D ₂ are the effective diameters of the male screw and the female screw, Α is the angle of the thread. Further, P is a pitch of the screw, and becomes a minimum unit for adjusting the attachment length of the long body when the end of the long body is fixed by the long body end fixing device of the present invention. That is, as the pitch P is shorter, the length can be adjusted more precisely and the long body can be fixed. Note that the names of the above parts are names based on JIS B 0205. If the pitch P is constant and the crest angle α is changed from 15 ° to 80 °, the meshing depth L between the first engagement surface and the second engagement surface (in the radial direction in which the crest and trough of the screw mesh with each other) ) Tends to increase as the peak angle α decreases (see FIG. 16 (P = 0.5 [mm])). Therefore, the crest angle α of the first engaging surface and the second engaging surface is preferably 35 ° or less, more preferably α = 15 ° to 35 °. If the mountain angle is within this range, it is possible to ensure a meshing depth L that allows the first engagement surface and the second engagement surface to be reliably engaged. Usually, when the pitch P is shortened (for example, less than 1 mm), the meshing depth L is also shortened. However, by reducing the mountain angle α, the pitch P can be shortened while maintaining a sufficient meshing depth L. Can do. As a result, when the long body is fixed to the long body end fixing device, the attachment length of the long body can be precisely adjusted. Further, when the pitch P is made constant and the ridge angle α is changed from 15 ° to 80 °, the axial thickness at the effective diameter D ₂ (d ₂ ) portion of the screw thread (hereinafter referred to as “tooth thickness at the effective diameter portion”). T ”) tends to be thicker as the peak angle α is smaller (see FIG. 17 (P = 0.5 [mm])). Therefore, the crest angle α of the first engaging surface and the second engaging surface is preferably 35 ° or less, more preferably α = 15 ° to 35 °. If the mountain angle is within this range, the tooth thickness of the screw thread increases and the strength is improved, so that the strength of the engagement portion between the first engagement surface and the second engagement surface can be set high.

  Further, when the screw thread of the second engagement surface has a smaller tensile strength than the screw thread of the first engagement surface, the axial thickness of the effective diameter of the screw thread of the second engagement surface is set to the first thickness. It is desirable to make it thicker than the thickness of the thread on the engaging surface. With this configuration, even if the end of the elongated body (having the first engagement surface) is made of high-strength metal and the key (having the second engagement surface) is made of resin, Since the strength of the thread on the mating surface can be improved, the strength of the engaging portion between the first engaging surface and the second engaging surface is increased. Therefore, if the thread thickness of the first engagement surface is set to the minimum tooth thickness that can be processed and the tooth thickness of the screw thread of the second engagement surface is made thick according to the material, the pitch P can be kept small while maintaining the strength. The long body can be fixed. At this time, if the peak angle α is set to 35 ° or less, the meshing depth L can be ensured as described above. Therefore, even if the tooth thickness T and the pitch P at the effective diameter portion are reduced, the long body is formed. It can be fixed securely.

  The configuration of the screw thread described above is the same whether the first engagement surface and the second engagement surface are male screws (female screws) or parallel grooves. Further, the shape of the thread may be a triangular thread such as a metric thread or a trapezoidal thread.

  Although there is no particular limitation on the shape of the base, it is preferable to have an engagement groove having a U-shaped cross section that engages with the outer peripheral surface of the end from the direction intersecting the axis of the end of the elongated body. Moreover, it is preferable that the 2nd engagement surface is provided in the groove bottom face which divides an engagement groove | channel.

  The base has a pair of arms that protrude from the base and have a locking first claw and can be elastically deformed with each other. The locking first claw portion is not particularly limited as long as it has a shape that locks with a second claw portion formed on the fixed body described later.

  And it is preferable that a pair of arm part is plate shape which has flexibility. By applying a force to the arm portion, the arm portion is bent and elastically deformed. Then, due to the elastic deformation of the arm portion, the locking first claw portion formed on the arm portion is displaced, and the locking first claw portion of the key and the second claw portion of the fixed body are locked or locked. Can be canceled. As a result, the key can be freely attached to and detached from the fixed body.

  In addition, the pair of arm portions preferably extend at a predetermined distance from the base portion in parallel with the depth direction of the engagement groove from the tip portions on both sides facing the engagement groove of the base portion. With this configuration, the operation for attaching and detaching the key is facilitated.

  The key may be appropriately selected in consideration of the mechanical strength desired for the long body end fixing device, but is preferably made of a resin such as polyacetal, nylon, or polypropylene. The size of the key is not particularly limited as long as the key can be mounted in a key mounting hole of the fixed body described later.

  In the long body end fixing device of the present invention, the fixing main body includes a storage chamber for storing the end of the long body, and a first engagement surface and a second engagement surface of the end stored in the storage chamber. Combined with a key that fixes the end to the storage chamber at an arbitrary axial position and has a second claw that is inserted in a direction intersecting the axis of the end and locked with the first claw And a hole.

  The shape of the fixed body is not particularly limited, but a shape having a hollow portion such as a cylindrical shape or a groove shape is preferable. Moreover, it is desirable that the fixed main body has a locking portion capable of locking other members such as pins, bolts, and rivets at a part thereof.

  The fixed body has a storage chamber for storing the end of the elongated body. The shape and size of the storage chamber are not particularly limited as long as the end of the elongated body can be stored, and may be appropriately selected according to the shape and size of the end. For example, when the fixed main body is formed of a cylindrical tube member, the inside of the cylinder may be a storage chamber. Further, the storage chamber preferably has a lateral opening that is mounted from the direction in which the end portion intersects the axis. Therefore, the fixed main body may have a shape in which a part of the cylindrical member is opened in the axial direction, or the cross section in the axial direction may be a U shape or a U shape. A storage chamber having a lateral opening can easily store a long body and can be easily adjusted in length.

  The fixed body has a key mounting hole having a second claw portion. And the 2nd nail | claw part latches with the latching 1st nail | claw part formed in the above-mentioned key. When the locking first claw portion and the second claw portion are locked, the key can be held on the fixed main body. Further, the key is inserted into the key mounting hole in a direction intersecting the axis of the end of the long body. At this time, when at least a part of the first engagement surface of the end portion is engaged with the second engagement surface of the key, the end portion can be fixed to the storage chamber at an arbitrary axial position.

  The fixing body may be appropriately selected in consideration of the mechanical strength desired for the long body end fixing device, but is preferably made of a resin such as polyacetal, polyamide, or polypropylene. Also, die casting such as zinc die casting and aluminum die casting may be used.

  In the elongated body end fixing device of the present invention, the lock fixes a key mounted in the key mounting hole of the fixed main body. Due to the locking, it is possible to prevent an erroneous operation such as the engagement between the end of the long body and the key being released during use. As for the form of the lock, as long as the key can be fixed so as not to come out of the key attachment hole, the form is not particularly limited. However, the lock is attached between a pair of arm parts of the key, and the displacement of the arm part is reduced. It is preferable to prevent. This is because if the displacement of the arm portion is prevented, it is possible to prevent the lock between the first locking claw portion of the key and the second claw portion of the fixed body from being released.

  Furthermore, it is preferable that the fixed main body has a guide holding portion that holds the lock in a reciprocable manner. The lock can be integrally held on the fixed main body by the guide holding portion. In addition, since the lock is guided to an appropriate position of the key by the guide holding unit, the key can be fixed and released smoothly.

  The lock may be appropriately selected in consideration of the mechanical strength desired for the long-body end fixing device, but is preferably made of a resin such as polyacetal, nylon, or polypropylene.

  In the long body end fixing device of the present invention, at least the fixing main body may be fixed to another member in advance. By fixing a part of the long body end fixing device in advance, the long body end fixing device can be easily used even in a place where it is difficult to fix the long body at the time of disposing the long body. Moreover, you may fix to another member previously in the state which hold | maintained the lock | rock in the fixed main body.

  Below, the Example of the elongate body end fixing device of this invention is described using figures.

[Example 1]
The long body end fixing device of the present embodiment is a device for fixing the end of the inner cable 1 of the control cable. The elongate body end fixing device according to the present embodiment includes a key 2, a fixing body 3, and a lock 4. Each configuration will be described below.

(Inner cable)
FIG. 1 is a diagram schematically showing an end portion of the inner cable 1. The inner cable 1 includes a wire cable 11 and an end member 10. The end member 10 has a cylindrical shape made of iron, and one end thereof corresponds to the insertion allowance of the inner cable 1. A first parallel groove surface 101 having a mountain angle of 60 ° and a pitch of 1 mm (corresponding to M8) is formed on the outer peripheral surface of the end member 10. The first parallel groove surface 101 has a shape that engages with a second parallel groove surface 201 on the inner peripheral surface of the key 2 described later. The end portion of the wire cable 11 is inserted into the cylinder of the end member 10, and the wire cable 11 and the end member 10 are fixed by caulking the portion.

  In addition, the tip of the end member 10 has a protrusion 103. The protrusion 103 is formed in a ring shape coaxially with the end member 10. Since the protruding portion 103 has a larger diameter than an end portion (a U-shaped convex portion 313 described later) of the fixed main body 3, even if the inner cable 1 is pulled in the axial direction, the end member 10 is a storage chamber of the fixed main body 3 described later. It is possible to prevent the shaft 31 from slipping out in the axial direction.

(Key)
2 and 3 are views showing the key 2 of the elongated body end fixing device of the present embodiment, in which FIG. 2 is a perspective view and FIG. 3 is a view as seen from the Z direction of FIG. In the elongated body end fixing device of the present embodiment, the key 2 is made of polyamide (FR-PA) containing glass fiber and includes a base portion 20 and an arm portion 26.

  The base portion 20 is U-shaped as a whole, and includes a ceiling portion 210 formed of a U-shaped bottom portion and two leg portions 220 extending linearly from the ceiling portion 210. A second parallel groove surface 201 is formed on the inner peripheral surface of the U-shaped base 20, that is, the inner peripheral surface of the space formed by the ceiling portion 210 and the two leg portions 220. The second parallel groove surface 201 has a shape (corresponding to M8) that engages with the first parallel groove surface 101 of the inner cable 1, and the meshing depth of both is 0.8 mm.

  The arm portion 26 includes an engagement portion 260 and an operation portion 266. The engaging portion 260 has a thin plate shape and is formed integrally with the distal end portion 221 of the leg portion 220. And the engaging part 260 is linearly extended toward the ceiling part 210 direction, maintaining the clearance gap 29 between the base parts 20. FIG. A locking projection 261 that protrudes outward is formed at the center of the engagement portion 260. The locking projection 261 has a substantially right-angled cross section in the longitudinal direction, and an acute angle of the triangle is directed to the tip side of the leg 220.

  The operation part 266 is extended from the upper end part of the engaging part 260, and has a shape in which opposing surfaces approach each other. When a force in the direction of arrow A in FIG. 3 is applied to the operation portion 266, the arm portion 26 is thin plate-like, and a gap 29 is provided between the arm portion 26 and the base portion 20. Bends toward the gap 29 side. At the same time, the locking projection 261 is displaced from the original position to the base 20 side.

  In addition, the front-end | tip part 221 of the leg part 220 is chamfered so that an edge may become a curve. With this configuration, the key 2 can be easily inserted into a key insertion slot 320 described later.

  Further, on the upper surface of the ceiling portion 210, a first protrusion 211 composed of a step portion parallel to the axial direction (axial direction when the end member 10 is fixed) and a central portion of the first protrusion 211 are formed. A second protrusion 212. The second ridge 212 is engaged with a distal end portion of a lock described later.

(Fixed body)
FIG. 4 is a perspective view of the fixing main body 3 of the long body end fixing device according to the present embodiment. In FIG. 4, the fixed main body 3 has a symmetric configuration with respect to the plane P.

  In the long body end fixing device of the present embodiment, the fixing main body 3 is made of reinforced polyamide. The fixed main body 3 has a housing member 30 having a groove portion whose U-shaped cross section in the axial direction (axial direction when the end member 10 is fixed) as a whole, and a donut-shaped latch connected to one end of the housing member 30 It consists of a member 39. A locking member 39 is integrally connected to one end of the storage member 30, and the storage member 30 and the locking member 39 are connected to each other with their axial directions perpendicular to each other.

  A groove portion having a U-shaped cross section of the storage member 30 is a storage chamber 31. The storage chamber 31 is a space for storing the end member 10 of the inner cable 1. The storage chamber 31 has one end in the axial direction connected to the locking member 39 and closed to be a closed end, while the other end is opened to be an open end. A U-shaped convex portion 313 that protrudes toward the groove surface of the storage chamber 31 is formed at the open end. Due to the U-shaped convex part 313, the end part of the storage chamber 31 is narrower than the other part. Further, the opening portion of the storage member 30 in the axial direction, that is, the opening side of the U-shaped groove portion is a lateral insertion hole 36 into which the end member 10 of the inner cable 1 is inserted.

  The storage member 30 has a key mounting hole 32 that intersects the axial direction of the end member 10 and penetrates the storage member 30. The key mounting hole 32 is a hole for detachably mounting the key 2. The key mounting hole 32 is defined by two surfaces 321 and 323 that are parallel to the axial direction and face each other in parallel, and two surfaces 322 and 324 that are perpendicular to the surfaces 321 and 323 and face each other in parallel. The surface 321 is a groove bottom side of the storage chamber 31 having a U-shaped cross section, the surface 323 is a surface on the lateral insertion hole 36 side, the surface 322 is the closed end side of the storage chamber 31, and the surface 324 is the storage chamber 31. It is the surface by the side of the open end. Since the surface 322 and the surface 324 face each other perpendicular to the axial direction, a part of the storage chamber 31 appears in a U-shape on the surface 322 and the surface 324.

  In the following description, the fixed main body 3 is symmetric with respect to the plane P in FIG. 4, so only one side of the plane P will be described, but the other has the same configuration. Since the fixed body 3 has a symmetric configuration with respect to the surface P, the key 2 and a lock 4 described later can be mounted on either side of the surface P of the fixed body 3.

  Each of the surfaces 321 and 323 has a locking end 326 that is parallel to the axial direction. Note that, on the surface 323, the end surface of the lateral insertion hole 36 becomes a locking end 326.

  Further, the tip end portion of the key mounting hole 32 in the insertion direction of the key 2 is a key insertion slot 320. That is, the key insertion slot 320 has a quadrangular shape including the ends of the surfaces 321 to 323 and a part of the surface 324. The key 2 is inserted into the key insertion hole 32 through the key insertion slot 320. The ends of the surfaces 321 to 323 are curved, and the end of the key mounting hole 32 becomes wider toward the key insertion slot 320.

  On the surface 324 side of the key mounting hole 32, a guide holding portion 34 is formed along the outer peripheral surface of the storage member 30 extending in the axial direction from the center portion of the key insertion port 320. The guide holding part 34 has a T-shaped cross section. The guide holder 34 holds a lock 4 described later. In addition, a protruding portion 328 is formed integrally with the surface 324 on a part of both sides in the axial direction of the guide holding portion 34. A portion having a U-shaped cross section defined by the upper surface of the guide holding portion 34 and the projection portion 328 becomes a guide groove portion 344.

  Further, on the upper surface of the guide holding portion 34, a holding protrusion 345 for locking a distal end portion of the lock 4 described later is provided. The holding protrusion 345 is formed outside the guide groove 344. The holding protrusion 345 has a right-angled triangular cross section and has an acute angle side facing the open end side of the storage chamber 31.

(Lock)
FIG. 5 is a perspective view of the lock 4 of the long body end fixing device of the present embodiment. FIG. 6 is a perspective view showing a state where the lock 4 is mounted on the fixed body 3 described above.

  In the elongated body end fixing device of the present embodiment, the lock 4 is made of polyacetal. The lock 4 includes a lock body 40 and a locking portion 46.

  The lock body 40 has a U-shaped cross section, and includes an upper surface portion 41 and two side surface portions 42 that linearly extend from the upper surface portion 41. And the guide holding part 34 provided in the above-mentioned fixed main body 3 is inserted in the space 44 divided by the upper surface part 41 and the side part 42. FIG. The end portions of the two side surface portions 42 have guide fitting portions 424 that protrude toward the space 44 side. The guide fitting portion 424 is slidably fitted to the guide holding portion 34 having a T-shaped cross section. Further, the upper surface portion 41 has an operation claw 414, and this operation claw 414 serves as an operation means when the lock 4 is slid along the guide holding portion 34.

  The locking portion 46 extends from the central portion of the upper surface portion 41 in the sliding direction of the lock 4 and is formed integrally with the upper surface portion 41. And the latching | locking part 46 has the latching protrusion 460 in the front-end | tip part. The locking protrusion 460 has a step portion 461 that is orthogonal to the locking portion 46. Further, the locking protrusion 460 has a slope 462 at the center thereof. The slope portion 462 is formed such that the thickness of the tip portion becomes thinner toward the tip portion side of the locking portion 46.

(Fixing procedure)
Next, a procedure for fixing the inner cable 1 to the long body end fixing device of the present embodiment will be described with reference to FIGS. FIG. 6 is a perspective view showing a state in which the lock 4 is attached to the fixed body 3 of the elongated body end fixing device of the present embodiment, and the fixed body 3 is attached in advance to the operating member L (lever). Indicates. FIG. 7 is a view showing a state in which the inner cable 1, the key 2, and the lock 4 are attached to the fixing body 3 of the long body end fixing device of the present embodiment, where the lateral insertion port 36 is the front surface. FIG. 8 and 9 are a side view and a cross-sectional view taken along the line XX ′ when viewed from the Y direction in FIG. 7. 10 and 11 are perspective views of the elongated body end fixing device according to the present embodiment, and show the state before and after the key 2 is fixed to the lock 4.

  In the long body end fixing device of the present embodiment, the fixing main body 3 is fixed to the operation member L in advance as shown in FIG. The fixing main body 3 is inserted into a cylindrical pin P provided with a locking member 39 protruding from the operation member L, and the locking member 39 is prevented from moving in the axial direction of the pin P by the E-ring R. It is fixed. Therefore, the fixed main body 3 can rotate around the axis of the pin P, and the operation member L moves on an arc centered on the bearing portion (not shown).

  The lock 4 has the guide holding portion 34 of the fixed main body 3 inserted into the space 44. At this time, the guide fitting portion 424 of the lock 4 is slidably fitted to the guide holding portion 34 having a T-shaped cross section. In this state, when the lock 4 is slid along the guide holding portion 34 using the operation claw 414, the slope of the holding projection 345 and the slope portion 462 formed on the locking protrusion 460 of the locking portion 46 are slid. In the meantime, the engaging portion 46 is bent by being pressed by the holding projection 345. When the lock 4 is further slid, the tip of the holding projection 345 fits into the stepped portion 461 (see FIG. 12 described later). At the same time, the end portion of the locking portion 46 of the lock 4 is inserted into the guide groove portion 344. That is, the lock 4 is held on the fixed body 3 by the holding protrusion 345 and the guide groove 344 of the fixed body 3.

  Thereafter, the end member 10 of the inner cable 1 is housed in the housing chamber 31 (in the direction of the black arrow in FIG. 6) from the lateral insertion port 36 and adjusted to a desired length.

  Next, the key 2 is attached to the key insertion hole 32 from the distal end portion 221. At this time, the arm portion 26 is bent toward the gap 29 side by pressing the operation portion 266 that is a part of the arm portion 26 of the key 2 in the direction A in FIG. At the same time, the locking projection 261 is also displaced from the original position toward the base 20, so that the key 2 is inserted into the key mounting hole 32 without the locking projection 261 of the key 2 colliding with the key insertion slot 320. be able to. After the key 2 is inserted, the locking projection 261 is locked to the locking end 326 (see FIGS. 7 and 9), so that the key 2 is inserted in the opposite insertion direction (upward direction in FIGS. 7 to 9). The movement is restricted, and the key 2 is prevented from protruding or falling off from the key mounting hole 32. At the same time, the second parallel groove surface 201 formed on the key 2 and a part of the first parallel groove surface 101 of the end member 10 are engaged with each other (see FIGS. 8 and 9). 1 is restricted from moving in the axial direction. In FIG. 8, the illustration of the lock 4 is omitted for explanation.

  Here, when the length of the inner cable 1 is adjusted again, the key 2 is removed from the key mounting hole 32 so that the first parallel groove surface 101 and a part of the second parallel groove surface 201 are engaged. Can be canceled. That is, by pressing the operation part 266 of the key 2 in the direction A in FIG. 3, the arm part 26 is bent, and the locking convex part 261 is displaced toward the base 20 side, thereby the locking convex part 261 and the locking end. If the locking with the portion 326 is released, the key 2 can be removed from the key mounting hole 32. At the same time, since the engagement between the first parallel groove surface 101 and a part of the second parallel groove surface 201 is released, the length of the end member 10 can be freely adjusted.

  Next, the key 2 is fixed by the lock 4. Before the key 2 is fixed by the lock 4, the state shown in the perspective view of FIG. By sliding the lock 4 along the guide holding portion 34 toward the key 2 (in the direction of arrow B in FIG. 10), the key 2 shown in the perspective view of FIG. 11 is fixed. The procedure for fixing the key 2 with the lock 4 will be described below. 10 and 11, the end member 10 is not shown.

  12 is a cross-sectional view in the sliding direction B (see FIG. 10) of the lock 4 in the state shown in FIGS. 10 and 11, and schematically shows the main parts of the lock 4, the key 2, and the fixed body 3. Represents.

  In a state before the key 2 is fixed by the lock 4 (hereinafter referred to as “pre-key-fixed state”), the stepped portion 461 located at the distal end portion of the locking portion 46 of the lock 4 and the holding projection 345 of the fixing main body 3 Locked. Next, when the lock 4 is slid in the sliding direction B, the inclined surface portion 462 formed in the locking portion 46 of the lock 4 comes into contact with the second protrusion 212 of the key 2. When the lock 4 is further moved, the inclined surface portion 462 is pressed by the second protrusion 212 to cause bending. When further moved in this state, the tip of the second protrusion 212 is fitted into the step 461. Thus, the key 2 is fixed by the lock 4 (hereinafter referred to as “key fixed state”).

  However, when the key 2 is inserted with an inclination with respect to the key mounting hole 32, the second parallel groove surface 201 formed in the key 2 and a part of the first parallel groove surface 101 of the end member 10 are completely formed. When not engaged, the first protrusion 211 of the key 2 protrudes beyond a predetermined amount from the key insertion port 320 of the key mounting hole 32. As a result, before the slope 462 of the locking portion 46 of the lock 4 contacts the second protrusion 212, the edge of the locking portion 46 contacts the first protrusion 211. (Refer to the schematic diagram of FIG. 13). Therefore, it is necessary to remove the key 2 from the key mounting hole 32 and reinsert the key 2 so that the second parallel groove surface 201 and a part of the first parallel groove surface 101 are completely engaged. The procedure for reinserting the key 2 is the same as the procedure for adjusting the length of the inner cable 1 again.

  In the key-fixed state, the locking portion 46 of the lock 4 is positioned between the pair of operation portions 266 that are a part of the arm portion 26 of the key 2. In this state, the operation unit 266 cannot be operated. As a result, it is possible to prevent the lock between the key 2 and the fixed body 3 from being erroneously released.

[Example 2]
In the long body end fixing device of Example 1, the fixing main body 3 was a fixing main body 3 ′ described below. Hereinafter, different portions of the fixed body 3 and the fixed body 3 ′ will be described with reference to FIG.

  FIG. 14 is a perspective view showing a state in which the lock 4 is mounted on the fixing main body 3 ′ of the long body end fixing device of the present embodiment. The fixed body 3 ′ of the present embodiment is obtained by forming a guide window 348 in the guide groove 344 of the fixed body 3 and changing the shape of the protrusion 328 of the fixed body 3.

  On the surface 324 side of the key mounting hole 32, a guide holding portion 34 is formed along the outer peripheral surface of the storage member 30 extending in the axial direction from the center portion of the key insertion port 320. In addition, a protrusion 328 ′ having a fan-shaped (quarter circle) cross section in the axial direction is formed integrally with the surface 324 on a part of both sides in the axial direction of the guide holding portion 34. A portion defined by the upper surface of the guide holding portion 34 and the protruding portion 328 ′ becomes a guide groove portion 344. Furthermore, a bridge portion 342 extending from the front end portions of the two protrusion portions 328 ′ is formed on the protrusion portion 328 ′, and a portion defined by the guide groove portion 344 and the bridge portion 342 becomes a guide window 348.

  The lock 4 has the guide holding portion 34 of the fixed main body 3 ′ inserted in the space 44. At this time, the end portion of the locking portion 46 of the lock 4 is inserted into the guide groove portion 344 through the guide window 348, and the holding protrusion 345 (FIG. 14) formed on the stepped portion 461 of the locking portion 46 and the guide holding portion 34. (Not shown) is held by the fixed main body 3. The guide window 348 is sized so that a space remains in the upper part even when the locking portion 46 is inserted. Therefore, even if the locking portion 46 bends while the lock 4 slides along the guide holding portion 34, the bridge portion 342 does not collide with the locking portion 46.

  Due to the guide window 348, the lock 4 is more reliably held on the fixed body 3 'even in the state before the key is fixed.

[Example 3]
In the long end fixing device of Example 1, the thread crest angle of the first parallel groove surface 101 of the inner cable 1 is 60 °, the pitch is 0.5 mm, the outer diameter, the effective diameter, and the valley diameter are 7.8 mm. , 7.6 mm, and 7.3 mm, the thread crest angle of the second parallel groove surface 201 of the key 2 is 60 °, the valley diameter, the effective diameter, and the inner diameter are 7.8 mm, 7.6 mm, and 7.3 mm, respectively. did. The meshing depth between the first parallel groove surface 101 and the second parallel groove surface 201 was 0.2 mm. In addition, the shape of the thread of the 1st parallel groove 101 and the 2nd parallel groove 201 is the same shape.

[Example 4]
In the long end fixing device of Example 1, the thread crest angle of the first parallel groove surface 101 of the inner cable 1 is 25 °, the pitch is 0.5 mm, the outer diameter, the effective diameter, and the valley diameter are 7.3 mm. , 6.7 mm, and 6.5 mm, the thread crest angle of the second parallel groove surface 201 of the key 2 is 25 °, the valley diameter, the effective diameter, and the inner diameter are 7.3 mm, 6.7 mm, and 6.5 mm, respectively. did. The meshing depth between the first parallel groove surface 101 and the second parallel groove surface 201 was 0.4 mm. In addition, the shape of the thread of the 1st parallel groove 101 and the 2nd parallel groove 201 is the same shape.

(Evaluation)
After the inner cable 1 is fixed to the long end fixing device of Example 1, Example 3, and Comparative Example, a tensile test in the axial direction of the end member 10 is performed, and the first parallel groove surface 101 and the second parallel groove surface 201 are tested. The engagement strength was investigated. The tensile test was performed at room temperature and 100 ° C. at a tensile speed of 10 mm / min using an ordinary tensile tester. Table 1 shows the test results.

  Since the pitch is 0.5 mm in the long end fixing device according to the third and fourth embodiments, the attachment length can be adjusted more precisely than the long end fixing device according to the first embodiment where the pitch is 1 mm. It is. Further, both of the example 3 and the example 4 have a pitch of 0.5 mm, but the example 4 in which the thread angle of the screw thread is 25 ° has a large meshing depth, so that the end member 10 is pulled in the axial direction. The strength against is strong.

[Example 5]
In the long end fixing device of Example 1, the thread crest angle of the first parallel groove surface 101 of the inner cable 1 is 7 °, the pitch is 0.5 mm, the outer diameter, the effective diameter, and the valley diameter are 7.3 mm. 6.8 mm, 6.3 mm, tooth diameter of the effective diameter portion is 0.125 mm, the thread crest angle of the second parallel groove surface 201 of the key 2 is 7 °, the valley diameter, the effective diameter, and the inner diameter are 7 respectively. .3 mm, 6.8 mm, 6.3 mm, and the tooth thickness of the effective diameter portion was 0.375 mm. The meshing depth between the first parallel groove surface 101 and the second parallel groove surface 201 was 0.5 mm.

  The end member 10 of the inner cable 1 having the first parallel groove surface 101 is made of iron and has a tensile strength of 1500 MPa and a shear strength of 900 MPa. The key 2 having the second parallel groove surface 201 is made of FR-PA, has a tensile strength of 124 MPa, a shear strength of 75.5 MPa, and is about 1/12 of iron. In this example, the tooth thickness of the effective diameter portion of the thread of the second parallel groove surface 201 made of FR-PA is three times the tooth thickness of the effective diameter portion of the screw thread of the first parallel groove surface 101 made of iron. is there. Therefore, the strength ratio of the thread is (strength of the thread of the first parallel groove surface 101) :( strength of the thread of the second parallel groove surface 201) = 4: 1.

  Since the long end fixing device of the present embodiment has a pitch of 0.5 mm, the attachment length can be precisely adjusted. Moreover, since the strength of the thread on the key 2 side is improved and the meshing depth is sufficient, the inner cable 1 can be firmly fixed.

It is the figure which showed typically a part of inner cable fixed to the elongate body end fixing device of Example 1 and Example 2. FIG. It is a perspective view which shows the key of the elongate body end fixing device of Example 1 and Example 2. FIG. It is the figure which looked at the key of the elongate body end fixing device of Example 1 and Example 2 from the Z direction of FIG. 2, Comprising: It is a figure at the time of changing an arm part elastically. It is a perspective view which shows the fixing main body of the elongate body end fixing device of Example 1. FIG. It is a perspective view which shows the lock | rock of the elongate body end fixing device of Example 1 and Example 2. FIG. It is a perspective view which shows the state which mounted | wore the fixed main body of the elongate body end fixing device of Example 1 with the lock | rock. It is a front view which shows the state which attached the key and the lock | rock to the fixing main body of the elongate body end fixing device of Example 1, and fixed the edge part of the inner cable. It is a side view of the elongate body end fixing device of Example 1, Comprising: It is the side view seen from the Y direction of FIG. It is sectional drawing of the elongate body end fixing device of Example 1, Comprising: The cross section in X-X 'of FIG. 7 is shown. It is a perspective view of the principal part of the elongate body end fixing device of Example 1, Comprising: It is a figure which shows the state before key fixing. It is a perspective view of the principal part of the elongate body end fixing device of Example 1, Comprising: It is a figure which shows a key fixing state. It is the figure which showed typically the process in which the key is fixed to a lock | rock in the elongate body end fixing device of Example 1 and Example 2, Comprising: It is sectional drawing of the sliding direction of a lock | rock. It is principal part sectional drawing of the elongate body end fixing device of Example 1 and Example 2, Comprising: It is a schematic diagram which shows the state which a key and a lock | rock contact. It is a perspective view which shows the state which mounted | wore the main-body part of the elongate body end fixing device of Example 2 with the lock | rock. It is an axial sectional view of a screw. It is a graph which shows the meshing depth with respect to the crest angle of a screw thread. It is a graph which shows the tooth thickness in the effective diameter part with respect to the crest angle of a screw thread.

Explanation of symbols

1: Inner cable (long body)
10: End member (end portion) 101: First parallel groove surface (first engagement surface)
2: Key 20: Base 201: Second parallel groove surface (second engagement surface)
26: Arm part 261: Locking convex part (locking first claw)
3, 3 ': Fixed body 31: Storage chamber 32: Key mounting hole 326: Locking end (second claw)
34: Guide holding part 36: Lateral insertion hole (lateral opening)
4: Lock 46: Locking portion 460: Locking protrusion

Claims (10)

A base portion having a second engagement surface that engages with an arbitrary axial portion of the first engagement surface of the elongated body having a first engagement surface extending in the axial direction on the outer peripheral side of the end portion; and the base portion A key having a pair of arm portions that protrude more and have a locking first claw portion and are elastically deformable with each other;
A storage chamber for storing the end portion of the elongated body, and the first engagement surface and the second engagement surface of the end portion stored in the storage chamber are engaged with each other to arbitrarily connect the end portion. A key mounting hole having a second claw portion that is inserted in a direction intersecting the axis of the end portion of the key that is fixed to the storage chamber at an axial position, and has a second claw portion that engages with the first claw portion; A fixed body with
A lock for fixing the key mounted in the key mounting hole;
An elongate body end fixing device characterized by comprising:   The long body end fixing device according to claim 1, wherein the long body is an inner or an outer of a control cable.   The elongate body end fixing device according to claim 1, wherein the storage chamber of the fixing main body has a lateral opening in which the end portion is mounted from a direction intersecting the axis.   The base portion of the key has a U-shaped engagement groove that engages with the outer peripheral surface of the end portion from a direction intersecting the axis of the end portion, and the second engagement surface defines the engagement groove. The long body end fixing device according to claim 1, wherein the long body end fixing device is provided on a bottom surface of the groove.   The long pair of arms according to claim 4, wherein the pair of arm portions extend at a predetermined distance from the base portion in parallel with the depth direction of the engagement groove from the tip portions on both sides facing the engagement groove of the base portion. Body edge fixing device.   The elongate body end fixing device according to claim 1, wherein the lock is mounted between the pair of arm portions to prevent displacement of the arm portions.   The elongate body end fixing device according to claim 6, wherein the fixing main body has a guide holding portion that holds the lock in a reciprocating manner. The first engaging surface is formed on the outer peripheral side of the end of the elongated body and has a male thread surface having a thread that extends in a spiral manner, or the outer peripheral side of the end of the elongated body makes a ring. A first parallel groove surface having a thread extending parallel to the axial direction,
2. The elongated body end fixing device according to claim 1, wherein the second engagement surface is a female screw surface screwed into the male screw surface or a second parallel groove surface fitted to the first parallel groove surface.   The thread of the second engagement surface has a lower tensile strength than the thread of the first engagement surface, and the axial thickness of the effective diameter of the thread of the second engagement surface is the first engagement surface. The elongate body end fixing device according to claim 8, wherein the elongate body end fixing device is thicker than a wall thickness of the thread on the mating surface.   The elongated body end fixing device according to claim 8 or 9, wherein a thread angle of the first engagement surface and the second engagement surface is 35 ° or less.

Images