JP7190415B2 - Mating structure and control cable length adjustment mechanism - Google Patents

Description

The present invention relates to a fitting structure and a control cable length adjusting mechanism.

For example, in a control cable length adjustment mechanism, when a rod connected to a cable is assembled into a housing, the tip of the rod is inserted into a hole formed in the housing so that the rod is fitted and connected to the housing. A fitting structure is known (see, for example, Patent Document 1). In the fitting structure of Patent Document 1, the maximum outer diameter of the tip of the rod is larger than the inner diameter of the hole in the housing, and the tip of the rod is formed with a slit extending in the axial direction of the rod. there is

When the tip of the rod is inserted into the hole in the housing, the gap between the slits at the tip of the rod narrows, and the outer diameter of the tip of the rod becomes equal to or less than the inner diameter of the hole in the housing. is inserted into the hole in the housing. After the tip of the rod passes through the hole in the housing, the outer diameter of the tip of the rod increases again, and the rod is attached to the housing while being restrained from coming off the hole in the housing.

JP 2013-36569 A

However, in the case of the fitting structure as described above, when inserting the rod into the mounting target hole of the housing or the like, it was necessary to assemble carefully so that the tip of the rod would not be damaged.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fitting structure and a control cable length adjusting mechanism that suppresses damage to the tip of a rod and facilitates assembly of the rod to an attachment target.

A fitting structure according to the present invention is a fitting structure having an attachment target having a hole and a rod inserted through the hole, wherein the tip of the rod protrudes with a diameter larger than the inner diameter of the hole. a tip that serves as an edge in the axial direction of the rod; a tapered portion that connects the projecting portion and the tip in the axial direction; and the projecting portion has a concave portion recessed from the groove portion toward the tip in the radially inner side of the outer periphery.

Further, a control cable length adjusting mechanism of the present invention is a control cable length adjusting mechanism including the fitting structure described above, wherein a cable is connected to the rod, and the length adjusting mechanism comprises the a housing into which a rod is inserted so as to move back and forth in the axial direction; a locking member that locks at a predetermined position, the attachment target is the housing, and the hole is a through hole provided in the housing.

A length adjusting mechanism according to another aspect of the present invention is a control cable length adjusting mechanism including the fitting structure described above, wherein a cable is connected to the rod, and the length adjusting mechanism comprises: a housing into which the rod is inserted so as to move back and forth in the axial direction; a locking member for locking at a predetermined position of the housing; a biasing member provided in the housing for biasing the rod in the axial direction; One end of the biasing member is attached to the housing, the other end of the biasing member is attached to the fitting member, the attachment target is the fitting member, and the hole is provided in the fitting member. It is a fitted hole.

According to the fitting structure and the control cable length adjusting mechanism of the present invention, damage to the tip of the rod is suppressed, and the rod can be easily assembled to the attachment target.

1 is an exploded perspective view of a control cable length adjusting mechanism to which a fitting structure according to an embodiment of the present invention is applied; FIG. FIG. 2 is a top view of the control cable length adjusting mechanism of FIG. 1; (A) is a schematic diagram showing an unlocked state before the rod inserted into the housing is fixed to the lock member, and (B) is a locked state in which the rod inserted into the housing is fixed to the lock member; 1 is a schematic diagram showing the . FIG. 2 is a partial cross-sectional view of a rod used in the fitting structure of FIG. 1; 5 is a partially enlarged view of area A in FIG. 4; FIG. FIG. 6 is a schematic diagram showing a state in which the tip portion of the rod is deformed from the state shown in FIG. 5; FIG. 5 is a cross-sectional view taken along line VII-VII of FIG. 4; 1. It is a schematic diagram which shows the state before the rod of the fitting structure of FIG. 1 is inserted in the hole of attachment object. FIG. 9 is a schematic diagram showing a state in which the tip of the rod slightly enters the hole to be attached from the state of FIG. 8 and the tapered portion and the opening edge of the hole are in contact. 10 is a schematic diagram showing a state in which the tip of the rod is further inserted into the hole from the state of FIG. 9 and the tip of the rod is deformed; FIG. FIG. 4 is a schematic diagram showing a state in which the tip portion of the rod is inserted through the hole and the rod is fitted to the attachment target; FIG. 8 is an exploded perspective view of a control cable length adjusting mechanism to which a fitting structure according to another embodiment of the present invention is applied; FIG. 13 is a top view of the control cable length adjustment mechanism of FIG. 12;

A fitting structure and a control cable length adjusting mechanism according to an embodiment of the present invention will be described below with reference to the drawings. The embodiments shown below are merely examples, and the fitting structure and control cable length adjusting mechanism of the present invention are not limited to the following embodiments.

As shown in FIGS. 1 and 2, the fitting structure S of this embodiment includes an attachment target (in this embodiment, a housing 1 described later) having a hole H, and a rod 2 inserted through the hole H. have. The fitting structure S is a structure for fitting and connecting the rod 2 and an attachment target to which the rod 2 is attached. The fitting structure S may be applied to any object as long as it can fit and connect the rod 2 to the attachment object. In this embodiment, the attachment target is the housing 1 , and the hole H provided in the attachment target is a through hole provided in the housing 1 . The attachment target may be anything other than the housing 1 as long as the rod 2 can be attached. For example, as in a later-described modified example (see FIGS. 12 and 13), the attachment target is a fitting member EN (see FIG. 12) having a fitting hole H3 into which a tip portion 21 of the rod 2 (described later) is fitted. It may be both the housing 1 and the fitting member EN, or it may be an attachment object other than these.

In this embodiment, as shown in FIGS. 1 and 2, the length adjustment mechanism M includes a housing 1 to be attached, a rod 2, a cable 3 (see FIG. 1) connected to the rod 2, A lock member 4 is provided. The length adjustment mechanism M adjusts the overall length of the control cable C including the housing 1 by adjusting the positions of the cable 3 and the rod 2 in the X-axis direction with respect to the housing 1 . Note that the control cable C is an assembly in which the housing 1, the rod 2 and the cable 3 are connected to each other in this embodiment. One end (not shown) of the control cable C is connected to the operation section, and the other end Ca is connected to the operated section (not shown). More specifically, for example, one end of the control cable C is connected to an operating portion such as a shift lever, and the other end Ca of the control cable C is connected to an operated portion such as an engine transmission.

The length adjustment mechanism M adjusts the overall length of the control cable C by fixing the rod 2 to the housing 1 after adjusting the position of the rod 2 in the direction of the axis X with respect to the housing 1. . In this embodiment, the length adjustment mechanism M is configured such that, in the unlocked state (see FIG. 3A) in which the rod 2 is not locked, as schematically shown in FIGS. 3A and 3B, After the position of the rod 2 in the axial X direction with respect to the housing 1 is adjusted, the lock member 4 is moved to the lock position (see FIG. 3(B)). As a result, the lock member 4 is engaged with the rod 2 in the X-axis direction, the position of the rod 2 in the X-axis direction with respect to the housing 1 is maintained, and the length of the control cable C from one end to the other end Ca can be adjusted. complete.

The cable 3 is connected to the rod 2 and transmits the operating force of the operating portion to the operated portion via the rod 2 and the housing 1 . The cable 3 is routed along a predetermined routing route between the operating section and the operated section in an installation target such as a vehicle. Although the structure of the cable 3 is not particularly limited, it can be an inner cable of a known control cable. In addition, the cable 3 may be housed in the outer casing along a predetermined wiring route.

The rod 2 is a long member attached to an attachment target. In this embodiment, the rod 2 is fitted and attached to the housing 1 to be attached, as will be described later. In this embodiment, rod 2 is connected to cable 3 and housing 1 to transmit the operating force of cable 3 to housing 1 . As a result, the operated portion connected to the housing 1 operates. The rod 2, as shown in FIGS. 1 and 2, has a tip portion 21 that fits into the hole H to be attached. The tip 21 inserted through the hole H engages with the peripheral edge of the hole H in the direction of the axis X of the rod 2 when the rod 2 moves in the direction of the axis X in the direction away from the hole H. Detachment from the housing 1 is suppressed.

As shown in FIG. 4, the rod 2 in this embodiment includes a tip end portion 21 fitted to an object to be attached, an engaging portion 22 engaging with the locking member 4 in the direction of the axis X, and a cable 3. and a cable connecting portion 23 that The tip portion 21 of the rod 2 will be described later.

As shown in FIG. 4 , the engaging portion 22 is a portion that engages with the locking member 4 and is arranged on the base end side (left side in FIG. 4 ) of the distal end portion 21 in the direction of the axis X. As shown in FIG. Although the structure of the engaging portion 22 is not particularly limited, in the present embodiment, the engaging portion 22 has an uneven structure in which grooves and protrusions are alternately arranged along the X-axis direction. The cable connecting portion 23 is a portion to which the cable 3 is connected, which is arranged on the base end side of the engaging portion 22 in the X-axis direction. In this embodiment, as shown in FIG. 4, the cable connecting portion 23 has a cavity into which the cable 3 is inserted, and the cable 3 is fixed by crimping or the like.

Although the material constituting the rod 2 is not particularly limited, it can be, for example, a hard synthetic resin. It should be noted that the rod 2 does not need to be entirely made of the same material, and may be partially made of a different material. For example, the tip portion 21 and the engaging portion 22 of the rod 2 may be made of synthetic resin, and the cable connecting portion 23 may be made of metal.

A housing 1 is an object to which a rod 2 is attached. In this embodiment, the housing 1 is connected to the operated part and transmits the operating force of the cable 3 transmitted via the rod 2 to the operated part. The housing 1 has a hole H into which the rod 2 is inserted, as shown in FIGS. In this embodiment, the housing 1 also functions as a base for fixing the rod 2 with the locking member 4 in a state where the rod 2 is adjusted in the axial direction with respect to the housing 1 .

Hole H is a through hole into which rod 2 is inserted. In this embodiment, the hole H is a through hole formed in the housing 1, as shown in FIGS. In this embodiment, the hole H is formed to have a substantially circular cross section perpendicular to the X-axis direction. Although the housing 1 has a plurality of holes H1 and H2 in this embodiment, the number of holes H is not particularly limited. Further, as will be described later, the tip portion 21 of the rod 2 is configured to fit into the holes H1 and H2. You just have to mate with one. In this specification, the case where the tip portion 21 of the rod 2 fits into the hole H1 will be described as an example, but the case where the tip portion 21 of the rod 2 fits into the hole H2 is similar.

The overall shape of the housing 1 is not particularly limited as long as the rod 2 can be attached. In this embodiment, the housing 1 has an elongated shape extending in the axial X direction of the rod 2 . In the following description, the direction toward the tip of the rod 2 in the direction of the axis X of the rod 2 in the housing 1 (the right side in FIG. 2) is defined as the tip side of the housing 1, and the base end of the rod 2 in the direction of the axis X of the rod 2. (left side in FIG. 2) is called the base end side of the housing 1 .

In this embodiment, as shown in FIGS. 1 and 2, the housing 1 includes a rod insertion portion 11 having a hole H2 into which the rod 2 is inserted into the housing 1, and a lock member 4 extending in the X-axis direction. It has a lock member holding portion 12 to which the lock member 4 can be attached, and a mounting portion 13 to be attached to the operated portion.

The rod insertion portion 11 is located on the base end side of the housing 1 and has a hole H2 through which the rod 2 passes. In this embodiment, the rod insertion portion 11 connects the outside of the housing 1 and the internal space of the lock member holding portion 12 through the hole H2. As shown in FIGS. 3(A) and 3(B), the lock member holding portion 12 can move the lock member 4 in a direction perpendicular to the axis X direction with the rod 2 inserted therethrough, and can move the lock member 4 vertically. The inner space has a shape corresponding to that of the lock member 4 so that the movement of the lock member 4 in the direction of the axis X is restricted. In the present embodiment, the locking member holding portion 12 has a substantially rectangular parallelepiped internal space. The attachment portion 13 connects the housing 1 to the operated portion. In this embodiment, the mounting portion 13 is provided on the distal end side of the housing 1 . The shape and structure of the attachment portion 13 are not particularly limited as long as they can be attached to the operated portion. In this embodiment, the attachment portion 13 has a fitting hole 13a into which a member such as a pin attached to the operated portion is inserted. The fitting hole 13a is a through-hole penetrating in a direction perpendicular to the axis X direction in this embodiment.

1 and 2, the housing 1 includes a wall portion 14 having a hole H1 through which the tip end portion 21 of the rod 2 passes, and a hole H1 in the wall portion 14 on the tip end side of the wall portion 14. A distal end portion 21 of the protruding rod 2 has a movable space portion 15 movable in the X-axis direction. A hole H1 formed in the wall portion 14 connects the internal space of the lock member holding portion 12 and the movement space portion 15 in the axial X direction. In this embodiment, the wall portion 14 (attachment target) of the housing 1 extends substantially perpendicularly to the X-axis direction, and has an engagement surface 14a that engages with an overhanging portion 211 (described later) of the rod 2 in the X-axis direction. ing. In the present embodiment, the engagement surface 14a is a surface of the wall portion 14 on the moving space portion 15 side (front end side in the direction of the axis X). Note that the engaging surface 14a may be provided on another portion to be attached instead of the wall portion 14 as long as it can be engaged with the protruding portion 211 in the axial X direction. The movement space portion 15 has a predetermined axial length so that the tip portion 21 of the rod 2 is disposed and the tip portion 21 of the rod 2 can move in the X-axis direction. The movement space portion 15 has an opening 16 that opens in a direction perpendicular to the axis X direction so that the tip portion 21 of the rod 2 is exposed to the outside of the housing 1 . Further, in the present embodiment, the housing 1 has a regulation mechanism that regulates movement of the lock member 4 from the locked state to the unlocked state when the lock member 4 is in the locked state (see FIG. 3B). A portion 17 is further provided.

The lock member 4 engages with the outer circumference of the rod 2 to lock the rod 2 with respect to the housing 1 at a predetermined position in the X-axis direction. In this embodiment, the lock member 4 is attached to the housing 1 so as to be movable in a direction substantially perpendicular to the X-axis direction. The lock member 4 is in an unlocked position (see FIG. 3A) in which the rod 2 is not engaged with the outer circumference of the rod 2 and allows the rod 2 to move in the direction of the axis X (see FIG. 3A), and in which the lock member 4 is engaged with the outer circumference of the rod 2 so that the rod 2 to the lock position (see FIG. 3(B)) that restricts the movement in the X-axis direction. The shape and structure of the lock member 4 are not particularly limited as long as they can be engaged with the rod 2 in the X-axis direction to restrict the movement of the rod 2 in the X-axis direction. In this embodiment, as shown in FIG. 1, the lock member 4 includes a pair of side walls 41 and 42 that face each other, and a connecting portion 43 that connects the pair of side walls 41 and 42. It has a substantially U-shaped cross section. The pair of side walls 41 and 42 have engaged portions 44 that engage with the engaging portion 22 at portions facing the outer periphery of the rod 2 . In this embodiment, the engaged portion 44 has an uneven structure in which grooves and protrusions are alternately arranged along the X-axis direction. The engaged portion 44 engages with the engaging portion 22 of the rod 2 in the X-axis direction when the lock member 4 moves to the lock position, and restricts the movement of the rod 2 with respect to the housing 1 in the X-axis direction. .

In this embodiment, when adjusting the length of the control cable C, after adjusting the position of the rod 2 in the axial X direction with respect to the housing 1, the lock member 4 is pressed toward the outer circumference of the rod 2, to the locked position. When the lock member 4 moves to the lock position, the lock member 4 engages with the outer circumference of the rod 2 to restrict the movement of the rod 2 in the direction of the axis X, the position of the rod 2 with respect to the housing 1 is held, and the control cable C length is adjusted. After moving the lock member 4 to the lock position, as shown in FIG. 3B, the lock member 4 can be moved from the lock position to the unlock position by sliding the restricting portion 17 in the direction of the axis X. Regulated. This further restricts the movement of the rod 2 in the X-axis direction.

Next, the tip portion 21 of the rod 2 will be described. The tip portion 21 of the rod 2 refers to a predetermined portion on the tip side of the rod 2 that is inserted through the hole H provided in the attachment target. In this embodiment, the tip portion 21 of the rod 2 is inserted and fitted into the hole H provided in the housing 1, and moves toward the disengagement direction opposite to the insertion direction in the direction of the axis X with respect to the hole H. movement is restricted.

As shown in FIGS. 2, 4 and 5, the tip 21 of the rod 2 has a protruding portion 211 larger in diameter than the inner diameter of the hole H and a tip 212 which serves as the edge of the rod 2 in the direction of the axis X. , a tapered portion 213 that connects the projecting portion 211 and the distal end 212 in the X-axis direction, and a groove portion 214 that is provided on the base end side of the projecting portion 211 in the direction around the X-axis. In this embodiment, the tip 21 of the rod 2 has a space 215 extending from the tip 212 in the X-axis direction. The space portion 215 divides the tip portion 21 of the rod 2 into two portions in the radial direction or a plurality of portions in the direction around the X axis in a cross section perpendicular to the X axis. Although the overall shape of the distal end portion 21 of the rod 2 is not particularly limited, in this embodiment, it is formed in a substantially hollow truncated cone shape tapering toward the distal end 212 . More specifically, in the present embodiment, the distal end portion 21 of the rod 2 has a substantially cylindrical projection 211 connected to the base end side of a substantially truncated conical tapered portion 213 in the axial X direction. Two slit-shaped spaces 215 are formed on the side surface of the portion 21 so as to sandwich the axis X therebetween.

A tip 212 of the rod 2 is an insertion end of the tip portion 21 of the rod 2 that is inserted into the hole H. As shown in FIG. In this embodiment, the tip 212 is configured to have a smaller diameter than the inner diameter of the hole H. As shown in FIG. In this case, when the tip portion 21 of the rod 2 is introduced into the hole H, the tapered portion 213 comes into contact with the opening edge of the hole H (see FIG. 9), making it easy to pass the tip portion 21 through the hole H. .

The tapered portion 213 is provided between the tip 212 and the projecting portion 211 in the X-axis direction. When the tapered portion 213 is inserted into the hole H, it contacts the opening edge of the hole H, and when the tip portion 21 of the rod 2 is inserted into the hole H, it slides against the opening edge of the hole H. The outer diameter of the tapered portion 213 on the distal end side is smaller than the inner diameter of the hole H, and the outer diameter of the tapered portion 213 on the proximal end side is larger than the inner diameter of the hole H. In this embodiment, when the tip portion 21 of the rod 2 is inserted into the hole H, the outer periphery of the tapered portion 213 receives a radially inward force from the opening edge of the hole H, and the space provided in the tip portion 21 is reduced. Tip portion 21 is deformed such that portion 215 narrows. As a result, the outer diameters of the tapered portion 213 and the projecting portion 211 are reduced, making it easier to insert the tip portion 21 of the rod 2 into the hole H. As shown in FIG.

The groove portion 214 is a groove-shaped portion provided in the direction around the axis X on the base end side of the projecting portion 211 . The groove portion 214 is configured to have an outer diameter smaller than that of the projecting portion 211 . In the present embodiment, the groove portion 214 is provided between the projecting portion 211 and the engaging portion 22 in the X-axis direction, and is an annular recess recessed radially inward with respect to the projecting portion 211 and the engaging portion 22 . It has become. In the present embodiment, the groove portion 214 is configured so that when the projecting portion 211 enters the hole H, the base end side of the groove portion 214 is used as a fulcrum and the portion from the groove portion 214 to the tip end 212 bends toward the axis X. (see FIG. 10). In this embodiment, the outer diameter of the groove 214 is smaller than the outer diameter of the projecting portion 211, and the space 215 extends from the distal end 212 of the rod 2 to the proximal end of the groove 214, so that the groove 214 serves as a fulcrum. The tip portion 21 is easily bent.

After being inserted into the hole H, the protruding portion 211 engages with the peripheral portion of the hole H in the direction of the axis X to prevent the tip portion 21 of the rod 2 from being detached from the attachment target (see FIG. 11). . In this embodiment, the outer diameter of the projecting portion 211 is larger than the inner diameter of the hole H after being inserted into the hole H. As shown in FIG. 5, the projecting portion 211 has an engaged surface 211a that extends substantially perpendicularly to the X-axis direction and engages with the engaging surface 14a in the X-axis direction. As shown in FIG. 11, the engaged surface 211a of the protruding portion 211 engages with the engaging surface 14a of the attachment target (wall portion 14) in the X-axis direction, thereby moving the rod 2 from the housing 1. Separation in the X-axis direction is suppressed.

As shown in FIG. 5, the projecting portion 211 has a concave portion 211b that is recessed from the groove portion 214 in the distal direction radially inward of the outer periphery. As will be described later, when the tip 21 of the rod 2 is inserted into the hole H, the recess 211b deforms such that the space inside the recess 211b narrows in the radial direction. As a result, when the tip portion 21 of the rod 2 is inserted into the hole H, the tip portion 21 is easily deformed radially inward so that the outer diameter of the projecting portion 211 becomes smaller. Damage to the tip portion 21 is suppressed.

In this embodiment, as shown in FIG. 5, the recessed portion 211b is formed so as to be recessed toward the distal end side in the X-axis direction with respect to the engaged surface 211a of the overhanging portion 211 . As described above, the concave portion 211b is not particularly limited in radial position as long as it is provided radially inward with respect to the outer periphery of the projecting portion 211. However, in the present embodiment, It is provided in the boundary area between the groove portion 214 and the projecting portion 211 . More specifically, the recessed portion 211b extends in the axis X direction on an extension line of the outer periphery of the groove portion 214 .

As shown in FIG. 5, the concave portion 211b is formed in a substantially U shape, specifically a substantially semicircular shape in a cross section of the distal end portion 21 cut along the axis X direction. However, the cross-sectional shape of the recess 211b is not particularly limited as long as it is deformable so that the space inside the recess 211b becomes narrower in the radial direction when the tip 21 is inserted into the hole H. For example, the cross-sectional shape of the concave portion 211b may be a substantially semicircular shape, a substantially semielliptical shape, a substantially triangular shape, a substantially rectangular shape, a wedge shape, a slit shape, or other shapes.

In the present embodiment, as shown in FIG. 7, the concave portion 211b extends substantially annularly along the boundary region with the groove portion 214 of the engaged surface 211a when viewed in the direction of the axis X. As shown in FIG. In this case, the protruding portion 211 is easily bent in almost all directions around the X axis. Therefore, when the tip portion 21 is inserted into the hole H, the protrusion portion 211 is easily deformed, and the breakage of the tip portion 21 is further suppressed. Note that the term “substantially annular” includes a state in which the concave portion 211b is continuous and completely annular in the direction around the X axis, and a state in which the concave portion 211b is partially interrupted in the direction around the X axis.

The radial width of the recess 211b (the distance L1 between the radially inner edge E1 and the radially outer edge E2 of the recess 211b shown in FIGS. 5 and 6) is equal to the tip 21 of the rod 2. It can be changed as appropriate according to the material, etc., and is not particularly limited. The distance L1 between the radially inner edge E1 and the radially outer edge E2 of the recess 211b is, for example, the protrusion width L2 (FIG. 5 See) is preferably 30 to 60%. Further, the depth L3 of the recessed portion 211b in the direction of the axis X can be appropriately changed according to the material of the tip portion 21 of the rod 2, and is not particularly limited. to the tip 212 is preferably 20 to 40% of the axial length L4.

As described above, the projecting portion 211 has the concave portion 211b recessed in the distal direction from the groove portion 214 radially inward of the outer periphery, so that when the distal end portion 21 of the rod 2 is inserted into the hole H, , the space inside the concave portion 211b is deformed so as to narrow in the radial direction. More specifically, as shown in FIG. 6, the distance L1 between the radially inner edge E1 and the radially outer edge E2 of the recess 211b is such that when the tip 21 is inserted into the hole H , the projecting portion 211 is narrowed by receiving a radially inward force from the opening edge of the hole H (see the narrowed interval L5 in FIG. 6). As a result, the outer diameter of the protruding portion 211 becomes smaller, making it easier to insert the tip portion 21 of the rod 2 into the hole H, as compared with when fitting into the hole H without the concave portion 211b. , the force applied to the tip end portion 21 of the rod 2, such as the outer periphery of the projecting portion 211 and the groove portion 214, can be reduced, and breakage of the tip end portion 21 of the rod 2 can be suppressed.

In addition, in this embodiment, the distal end portion 21 has a space portion 215 extending from the distal end portion 212 in the direction of the axis X, as shown in FIGS. In this case, when the distal end portion 21 is inserted into the hole H, the distal end portion 21 is bent radially inward so that the gap of the space portion 215 is narrowed in the radial direction, and the radial distance L1 of the concave portion 211b is increased. narrows (see FIGS. 6 and 10). Therefore, the distal end portion 21 is inserted into the hole H with deformation of both the bending of the distal end portion 21 by the space portion 215 and the deformation of the concave portion 211b. Therefore, compared to the case where only the space portion 215 is deformed or the case where only the concave portion 211b is deformed, each deformation amount can be reduced. Therefore, the load applied to each part of the distal end portion 21 (for example, the base end side of the groove portion 214, the outer periphery of the projecting portion 211, etc.) is reduced, and the damage of the distal end portion 21 is further suppressed.

Next, an example of the attachment operation for attaching the rod 2 to the attachment object will be described with reference to FIGS. 8 to 11. FIG.

As shown in FIG. 8, the tip 21 of the rod 2 is moved toward the hole H in the direction of the axis X to insert the tip 212 of the rod 2 into the hole H. As shown in FIG. When the tip 212 of the rod 2 enters the hole H, the opening edge of the hole H contacts the tapered portion 213 of the tip 21 of the rod 2 (see FIG. 9). When the rod 2 is pushed in the direction of the axis X in this state, a reaction force is applied radially inward from the opening edge of the hole H to the tapered portion 213 of the rod 2 . As a result, the radial distance L1 between the concave portions 211b is narrowed, and the distal end portion 21 is deformed so that the radial distance between the space portions 215 is narrowed (see FIG. 10). At this time, the rod 2 moves in the direction of the axis X while the tapered portion 213 of the rod 2 and the opening edge of the hole H slide. By deforming the tip portion 21 so that the radial interval L1 of the recessed portion 211b and the radial interval of the space portion 215 are narrowed, the outer diameter of the protruding portion 211 becomes equal to or smaller than the inner diameter of the hole H, and the tip of the rod 2 The portion 21 is inserted into the hole H. At this time, due to the deformation of the recess 211b, the force applied to the tip portion 21 of the rod 2, such as the outer periphery of the protruding portion 211 and the groove 214, is reduced compared to when fitting into the hole H without the recess 211b. can be reduced, and breakage of the tip portion 21 of the rod 2 can be suppressed. In addition, in the present embodiment, the distal end portion 21 is inserted into the hole H with deformation of both the bending of the distal end portion 21 by the space portion 215 and the deformation of the concave portion 211b. Therefore, compared to the case where only the space portion 215 is deformed or the case where only the concave portion 211b is deformed, each deformation amount can be reduced. As a result, when the distal end portion 21 is press-fitted into the hole H, the proximal end side of the groove portion 214, which is the fulcrum of the deformation of the distal end portion 21, may be cracked due to excessive deformation of the distal end portion 21, and the outer circumference of the projecting portion 211 may be broken. Cracking, chipping, or deformation is suppressed.

When the rod 2 is further inserted in the direction of the axis X from the state shown in FIG. 10, the protruding portion 211 protrudes from the hole H, the radial interval of the concave portion 211b is widened, and the radial interval of the space portion 215 is widened. Then, the outer diameter of the projecting portion 211 returns to a state larger than the inner diameter of the hole H. As a result, the engaged surface 211a of the protruding portion 211 becomes engageable with the engaging surface 14a of the peripheral portion of the hole H, and the detachment of the rod 2 from the housing 1 is suppressed.

12 and 13, the length adjusting device M of the control cable C includes, as a modification, a biasing member 5 provided in the housing 1 and biasing the rod 2 in the direction of the axis X; A fitting member EN that fits into the distal end portion 21 of the rod 2 may be provided. Configurations other than the biasing member 5 and the fitting member EN can be the same as those of the embodiment shown in FIGS. In this embodiment, the biasing member 5 is a coil spring that expands and contracts in the X-axis direction. In this embodiment, one end 5a of the biasing member 5 is attached to the housing 1, and the other end 5b of the biasing member 5 is attached to the fitting member EN. 12 and 13, the biasing member 5 biases the rod 2 in one direction along the axis X, and when the attachment portion 13 of the housing 1 is attached to the operated portion, Then, the rod 2 is pulled (or pushed) in one direction in the direction of the axis X by the biasing force of the biasing member 5, and the rod 2 and the cable 3 are semi-automatically brought into a tight state. The rod 2 can be fixed by the lock member 4 in this state. Therefore, there is no need to manually adjust the position of the rod 2 before locking the rod 2 with the lock member 4, and the length adjustment of the control cable C and the work of assembling the control cable C to the operated portion are facilitated.

The fitting member EN functions as a spring seat that supports the other end 5b of the biasing member 5 in the modified example. As shown in FIG. 12, the fitting member EN is formed in an annular shape and has a fitting hole H3 in the center. In the modification shown in FIGS. 12 and 13, the attachment target is the fitting member EN, and the attachment target hole is the fitting hole H3 provided in the fitting member EN. When the tip end portion 21 of the rod 2 is attached to the fitting hole H3 of the fitting member EN, after the biasing member 5 is passed through the tip end portion 21 of the rod 2, the tip end portion 21 is inserted into the hole H3 of the fitting member EN. Fitting completes the assembly. Specifically, by moving the tip portion 21 with respect to the fitting member EN toward the fitting hole H3 of the fitting member EN in a manner similar to the assembling method shown in FIGS. , the tip portion 21 can be inserted into the fitting hole H3 of the fitting member EN, and the modification shown in FIGS. 12 and 13 can obtain the same effect as the embodiment shown in FIGS. be able to.

Reference Signs List 1 housing 11 rod insertion portion 12 locking member holding portion 13 mounting portion 13a fitting hole 14 wall portion 14a engaging surface 15 movement space portion 16 opening 17 restricting portion 2 rod 21 rod tip portion 211 projecting portion 211a engaged surface 211b concave portion 212 tip 213 tapered portion 214 groove portion 215 space portion 22 engaging portion 23 cable connecting portion 3 cable 4 locking member 41, 42 side wall 43 connecting portion 44 engaged portion 5 biasing member 5a one end of biasing member 5b biasing Other end of member C Control cable Ca Other end E1 Radial inner edge of tip E2 Radial outer edge of recess EN Fitting member H Holes H1, H2 Hole H3 Fitting hole L1 Radial inner edge of recess L2 Length of protrusion radially extending from the outer periphery of the groove L3 Axial depth of the recess L4 Length from the engaged surface of the protrusion to the tip L5 Distance between the radially inner edge and the radially outer edge of the recess in the narrowed state M Length adjustment mechanism S Fitting structure X Axis

Claims (5)

A fitting structure having a mounting target having a hole and a rod inserted through the hole,
The tip of the rod includes an overhang having a diameter larger than the inner diameter of the hole, a tip that serves as an edge in the axial direction of the rod, and a tapered portion that connects the overhang and the tip in the axial direction. and a groove provided in a direction around the axis on the base end side of the overhang,
The projecting portion has a concave portion recessed from the groove portion toward the distal end radially inward of the outer periphery ,
The tip has a smaller diameter than the inner diameter of the hole,
the tip portion has a space extending in the axial direction from the tip,
The tip portion is configured to bend radially inward so that the gap in the space portion narrows in the radial direction when the tip portion is inserted into the hole.
Mating structure. the object to be attached has an engaging surface that extends substantially perpendicularly to the axial direction and engages the projecting portion in the axial direction;
the overhanging portion extends substantially perpendicularly to the axial direction and has an engaged surface that engages with the engaging surface in the axial direction;
2. The fitting structure according to claim 1 , wherein said concave portion extends in a substantially annular shape along a boundary region between said engaged surface and said groove portion. A control cable length adjusting mechanism comprising the fitting structure according to claim 1 or 2 ,
A cable is connected to the rod,
The length adjustment mechanism is
a housing into which the rod is inserted so that it can move back and forth in the axial direction;
a lock member attached to the housing so as to be movable in a direction substantially perpendicular to the axial direction, and engaging with the outer circumference of the rod to lock the rod at a predetermined position in the axial direction;
A length adjusting mechanism, wherein the attachment target is the housing, and the hole is a through hole provided in the housing. A control cable length adjusting mechanism comprising the fitting structure according to claim 1 or 2 ,
A cable is connected to the rod,
The length adjustment mechanism is
a housing into which the rod is inserted so that it can move back and forth in the axial direction;
a lock member attached to the housing so as to be movable in a direction substantially perpendicular to the axial direction and engaged with the outer circumference of the rod to lock the rod at a predetermined position in the axial direction;
a biasing member provided in the housing for biasing the rod in the axial direction;
A fitting member fitted to the tip of the rod,
one end of the biasing member is attached to the housing and the other end of the biasing member is attached to the fitting member;
A length adjusting mechanism, wherein the attachment target is the fitting member, and the hole is a fitting hole provided in the fitting member. A control cable length adjusting mechanism having a fitting structure,
The fitting structure is
having a mounting target having a hole and a rod inserted through the hole,
The tip of the rod includes an overhang having a diameter larger than the inner diameter of the hole, a tip that serves as an edge in the axial direction of the rod, and a tapered portion that connects the overhang and the tip in the axial direction. and a groove provided in a direction around the axis on the base end side of the overhang,
The projecting portion has a concave portion recessed from the groove portion toward the distal end radially inward of the outer periphery,
A cable is connected to the rod,
The length adjustment mechanism is
a housing into which the rod is inserted so that it can move back and forth in the axial direction;
a lock member attached to the housing so as to be movable in a direction substantially perpendicular to the axial direction and engaged with the outer circumference of the rod to lock the rod at a predetermined position in the axial direction;
a biasing member provided in the housing for biasing the rod in the axial direction;
a fitting member fitted to the tip of the rod;
with
one end of the biasing member is attached to the housing and the other end of the biasing member is attached to the fitting member;
A length adjusting mechanism, wherein the attachment target is the fitting member, and the hole is a fitting hole provided in the fitting member.

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