JPH07180719A - Terminal connection structure for control cable - Google Patents

Abstract

PURPOSE:To improve reliablity in respect to escape-prevention by integrating engagement pieces to be fitted to a fitting groove of an pin of an opposite side in a flexible and deformable manner, with an engagement part formed on a leading end of a connection body, and thereby performing strong engagement with the pin of the opposite side. CONSTITUTION:A pin 2 provided with a flange-like base is fixed to a leading end side of an outer lever 1. A pair of engagement pieces 17 are integrated with bilateral surfaces of a synthetic resin connection body 12. An insertion hole 13 of the connection body 12 is fitted to a leading end of the pin 2. The leading end of the pin 2 is then projected from the insertion hole 13. Its tapered surface 8 enters a portion between engagement parts 18 of the engagement pieces 17 of the connection body 12. The pin 2 is inserted while elastically deforming the engagement pieces 17 outward. The insertion is regulated by a base 3 of the pin 2. A fitting groove 9 of the pin 2 is projected from the insertion hole 13 and corresponds to the engagement part 18. The engagement pieces 17 are deformed inward in a resetting manner. The engagement part 18 is fitted to the fitting groove 9. The connection body 12 is connected with one-touch to the pin 2, being incapable of escaping and relatively in a rotatable manner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mounts an eye-shaped connecting body having an insertion hole at the end of a control cable, and inserts a pin projecting from a mating member such as a lever into the insertion hole of the connecting body. The present invention relates to a terminal connection structure for inserting and connecting with one touch.

[0002]

2. Description of the Related Art Conventionally, a one-touch connecting structure of this type is known as shown in FIG. This is because a fitting groove c is provided around the outer periphery of a pin b protruding from the mating member a, while a rod d connected to the end of the control cable is provided.
A soft resin in which an eyeball-shaped connecting body e having an insertion hole f is attached to the tip of the mold by cast molding of a reinforced resin, and an inward locking flange h is formed on the inner periphery in the insertion hole f. The locking ring g made of steel is fitted, and the pin b is pushed into the locking ring g while deforming the locking collar h, and when a certain amount is inserted, the locking ring h is restored and deformed to fit into the fitting groove c. When they are combined, they are connected so that they cannot be pulled out.

[0003]

However, in the conventional connecting structure, since the locking collar h itself which is fitted and locked in the fitting groove c of the pin b is a soft resin and is easily deformed, the retaining structure is prevented. However, there is a drawback that the manufacturing cost is high because the locking ring g made of a material different from that of the coupling body e is required.

[0004]

SUMMARY OF THE INVENTION The present invention has been completed in view of the above points, and when the pin is inserted into an insertion hole, the outer peripheral surface on the tip end side protruding from the insertion hole has a peripheral surface. In addition to forming a fitting groove along the direction, a locking piece provided at the tip on the outer surface of the connector always faces the edge of the insertion hole so that it can fit into the fitting groove of the pin. The insertion hole is integrally formed so as to be flexibly deformable in the radial direction.

[0005]

The present invention has the above-mentioned structure, and when the pin is inserted into the insertion hole of the connecting body, the pin engages with the locking portion when the tip end side of the pin comes out of the insertion hole, and the locking piece is moved to the outside. When the pin is bent and deformed further and is inserted a certain amount, the fitting groove on the outer periphery of the pin corresponds to the locking part of the locking piece, the locking piece is restored and deformed inward, and the locking part is released. It fits in the fitting groove and is connected so that it cannot be removed.

[0006]

That is, according to the present invention, the main body of the locking piece is bent and deformed when the pin is inserted, and the locking portion itself that fits into the fitting groove of the pin is not deformed. It is locked and the reliability of the stopper is improved. Further, since the locking piece is formed integrally with the connecting body, the number of parts is only one, and it can be manufactured relatively inexpensively. Furthermore, there is an effect that the setting value of the insertion load can be freely selected by changing the shape and the size of the locking piece.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In this embodiment, a structure of a portion for connecting a terminal of a push-pull type control cable to an outer lever of a transmission of an automobile is exemplified.

In the drawings, reference numeral 1 is an outer lever of a transmission, and a pin 2 having a flange-shaped base portion 3 provided on the tip end side of the outer lever 1 has a screw rod 4 projecting from the rear surface of the base portion 3 to the outer lever. It is fixed by being inserted into the mounting hole 5 formed in 1 and tightened with a nut 6. The outer periphery of the tip of the pin 2 is formed on a tapered inclined surface 8, and a fitting groove 9 having a constant depth is formed on the outer peripheral surface slightly before the inclined surface 8.

Reference numeral 11 is a rod connected to the end of a push-pull type control cable (not shown), and the tip of the rod 11 is tightly and relatively rotatably fitted to the pin 2 described above. A connecting body 12 made of a synthetic resin such as nylon 66 is fixed to the center of the insertion hole 13 so as to be transparent. The thickness of the eyeball portion of the connecting body 12 is such that when the pin 2 is inserted into the insertion hole 13 and the base portion 3 hits one end surface, the fitting groove 9 of the pin 2 is formed.
Has a thickness that slightly projects from the other end surface.

The left and right faces of the connecting body 12 which sandwich the axis of the rod 11 are machined into flat planes 15 parallel to the axial direction of the rod 11, leaving a peripheral surface in the center. A pair of locking pieces 17 are integrally formed on the left and right surfaces.

Each locking piece 17 is bifurcated so that the lower end side straddles the remaining peripheral surface, and is formed into a single narrow piece on the way.
It is extended from the lower end side of the flat surface 15 so as to stand up along the flat surface 15, and the extended end is folded back to a position slightly above the end surface of the eyeball portion, and then bent inward along the end surface and inserted. It faces the left and right edges of the hole 13.

The tip edge of each locking piece 17 facing the edge of the insertion hole 13 is formed into an arc shape having the same radius as the fitting groove 9 of the pin 2 described above, and the tip edge of the pin 2 is formed. It is a locking portion 18 that fits in the fitting groove 9.

The present embodiment has such a structure, and subsequently the assembling procedure will be described.

When the connecting body 12 is pushed in with its insertion hole 13 aligned with the tip of the pin 2, the pin 2 is relatively inserted into the insertion hole 13, and when the tip of the pin 2 comes out of the insertion hole 13, its inclination. The surface 8 enters between the locking portions 18 of both locking pieces 17 and is further inserted while flexing and deforming both locking pieces 17 to the outside, as shown in FIG. 3 (A).

When the base portion 3 of the pin 2 hits the end face on the back side of the connecting body 12 and the insertion operation is restricted, the fitting groove 9 of the pin 2 projects from the insertion hole 13 and the locking portions 18 of both locking pieces 17. Correspondingly, as shown in FIG.
Is restored and deformed inward so that the locking portion 18 fits into the fitting groove 9.
As a result, the connecting body 12 is connected to the pin 2 in a one-touch manner so that it cannot be pulled out and is relatively rotatable.

As described above, according to this embodiment, the main body of each locking piece 17 is flexibly deformed like a cantilever when the pin 2 is inserted. The locking portion 18 itself that fits in can be made to have a high hardness that does not require deformation, thereby improving the reliability of retaining. Moreover, since the locking piece 17 is formed integrally with the connecting body 12, the number of parts is one, and the manufacturing is relatively inexpensive. Further, the setting value of the insertion load can be freely selected by appropriately changing the shape, size, etc. of the locking piece 17.

The present invention is not limited to the control cable for operating the transmission of the above-described embodiment, but is also applicable to the case of connecting a control cable terminal for other purposes, and also to the control cable terminal without a rod. It can also be applied to the one that directly attaches the eyeball-shaped connecting body, etc., in short, general when connecting the eyeball-shaped connecting body attached to the end of the control cable to the pin protruding from the mating member with one touch. Can be widely applied over.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a plan view of the connected body.

FIG. 3 is an explanatory diagram of its operation.

FIG. 4 is an explanatory diagram of a conventional example.

[Explanation of symbols]

1: Outer lever (mate member) 2: Pin 9: Fitting groove 11: Rod 12: Connection body 13: Insertion hole 17:
Locking piece 18: Locking part

Claims (2)

[Claims] 1. An eyeball-shaped connecting body having an insertion hole is attached to an end of a control cable, and a pin protruding from a mating member such as a lever is inserted into the insertion hole of the connecting body for connection. A structure for, in the outer peripheral surface of the tip side protruding from the insertion hole when inserted into the insertion hole, while forming a fitting groove along the circumferential direction, on the outer surface of the coupling body , The locking piece provided at the tip always faces the edge of the insertion hole so that it can be fitted in the fitting groove of the pin, and the locking piece is integrally formed so as to be flexibly deformable in the radial direction of the insertion hole. The terminal connection structure of the control cable, which is characterized in that 2. The terminal connection structure for a control cable according to claim 1, wherein two or more locking pieces are provided at intervals.