JPH0454339Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (1) Industrial application field The present invention relates to a terminal fitting for the outer wire of Bowden wire used for the operation wire of the brake or clutch of a vehicle. a thin-walled cylindrical caulking portion that fits and caulks together; a shaft portion that fits and is supported in a support hole of a bracket for supporting an outer wire; a flange portion that abuts against one side of the bracket; The present invention relates to an improvement in a device in which a locking member mounting portion for mounting a locking member that cooperates with the flange portion and clamps the bracket is integrally connected to the flange portion.

(2) Prior Art The conventional structure of such a terminal fitting is shown in FIG. That is, the terminal fitting 1 includes a thin cylindrical caulked portion 2, a flange portion 3, a shaft portion 4, a locking member attachment portion 5, and a boot attachment portion 6 which are sequentially connected integrally in the axial direction from one end side. be done. The caulking portion 2 is fitted onto the outer periphery of the outer wire Wo end of the Bowden wire W to be caulked together, and the shaft portion 4 is fitted and supported in the support hole Ba of the bracket B for supporting the outer wire Wo. The locking member mounting portion 5 is formed as an annular groove, and a bifurcated locking member 8 made of a leaf spring that cooperates with the flange portion 3 to elastically clamp the bracket B is attached to the locking member mounting portion 5 so as to straddle the terminal fitting 1. It will be installed. The boot attachment part 6 is also formed as an annular groove, into which the end of the retractable boot 9 that covers the exposed part of the inner wire Wi is fitted, and furthermore, the end part is fitted with the band 10.
tightened by

(3) Problems to be solved by the invention In conventional terminal fittings, the caulked portion protrudes from the outer end of the flange portion, so the caulked portion becomes an obstacle when attempting to shorten the overall length.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide the terminal fitting whose overall length can be significantly shortened despite the presence of the caulked portion.

B. Structure of the invention (1) Means for solving the problem In order to achieve the above object, the present invention includes a thin-walled cylindrical caulking portion that fits and caulks the outer periphery of the end of the outer wire, and the outer wire. A shaft portion that fits into and is supported by a support hole of a bracket for supporting the bracket, a flange portion that abuts one side of the bracket, and a locking member that clamps the bracket is installed between the flange portion and the flange portion. In the terminal fitting for an outer wire of Bowden wire, which is formed by integrally connecting a locking member mounting part with a locking member mounting part, the caulking part is located in the support hole and is connected between the flange part and the shaft part. The caulking portion is arranged so as to be integrally connected, and the diameter of the caulking portion is smaller than that of the shaft portion so that an annular gap is formed between the outer circumference of the caulking portion and the inner circumference of the support hole. .

(2) Effect Since the caulked portion is located within the support hole, the total dimension in the axial direction of the caulked portion and the shaft portion corresponds to the length of the shaft portion of a conventional terminal fitting. Therefore, the overall length of the terminal fitting can be reduced by the amount of the conventional caulking portion.

Moreover, the end fitting is always fixed to the bracket by the bracket being held between the flange portion and the locking member, and the caulking portion is also always held within the support hole, so that the caulking portion can be secured to the caulking portion using the bracket. can always be effectively protected from collisions with other objects.

Furthermore, due to the existence of a gap between the outer periphery of the caulking part and the inner periphery of the support hole, even if distortion or irregularities occur on the outer circumference of the caulking part due to the caulking process, these can be easily fixed without interfering with the inner periphery of the support hole. A proper fitting state between the part and the support hole can be obtained, and play in the fitting part can be prevented. Furthermore, since the flange portion and the shaft portion are integrated into each end of the caulked portion in the shape of an outward facing brim, both ends of the caulked portion are effectively reinforced.

(3) Embodiment Hereinafter, an embodiment of the present invention will be explained with reference to FIG. 1. Bowden wire W is used for brake operation of a vehicle, and tube-shaped outer wire Wo
and an inner wire that slides freely through it.
Both ends of the outer wire Wo are supported by the bracket B via the terminal fitting 11 of the present invention, one end of the inner wire Wi is connected to the brake operating lever 20, and the other end is connected to the brake 21.

The terminal fitting 11 is connected to the flange portion 1 from one end side.
3. The thin cylindrical caulking part 12, the shaft part 14, the locking member mounting part 15, and the boot mounting part 16 are sequentially connected integrally in the axial direction. The flange portion 13 is abutted against one side of the bracket B, and the caulking portion 12 is fitted onto the outer periphery of the end of the outer wire Wo and is caulked and connected to the support hole of the bracket B.
The shaft portion 14 is disposed within the support hole Ba, and the shaft portion 14 is fitted into only one end portion of the support hole Ba.

The caulking portion 12 is formed to have a smaller diameter than the shaft portion 14, so that an annular gap S is formed between the outer circumference of the caulking portion 12 and the inner circumference of the support hole Ba. Due to the existence of this gap S, even if distortion or unevenness occurs on the outer circumferential surface of the caulking part 12 due to caulking, these can be prevented from interfering with the inner circumference of the support hole Ba, and the shaft part 14 and the support hole Ba can be properly aligned. Since a proper fitted state can be obtained, it is possible to prevent looseness of the fitted portions.

As in the past, the locking member mounting portion 15 is equipped with a locking member 8 that cooperates with the flange portion 13 to clamp the bracket B, and the boot mounting portion 16 is equipped with an elastic member that covers the exposed portion of the inner wire Wi. The end of the boot 9 is fitted and a tightening band 10 is applied to the end.

Next, the operation of this embodiment will be explained. Since the end of the outer wire Wo is supported by the bracket B via the terminal fitting 11, the brake operation wire 20
When the inner wire Wi is pulled by the operation, the inner wire Wi slides while being guided by the outer wire Wo, and the brake 21 can be operated. At this time, the pulling force of the inner wire Wi acts on the outer wire Wo as a stretching force, and the stretching force is supported by the bracket B via the flange portion 13 of the terminal fitting 11.

Furthermore, since the flange portion 13 and the locking member 8 work together to hold the bracket B, the shaft portion 14 will hold the bracket B even if the flexible portion of the Bowden wire W vibrates.
It will not come out of the support hole Ba.

Moreover, the flange portion 13 and shaft portion 14 are
Since the connection is made by the caulking part 12 arranged in the support hole Ba, there is no need for the caulking part 12 to protrude from the outer end surface of the flange part 13, and the terminal fitting 11
The length can be shortened.

Moreover, the caulking part 1 arranged in the support hole Ba
2 is protected from external impact by bracket B, and there is no risk of damage.

C. Effects of the invention As described above, according to the invention, the thin-walled cylindrical caulking part is fitted onto the outer periphery of the end of the outer wire and is caulked, and the caulking part is fitted into the support hole of the bracket for supporting the outer wire. The shaft part supported by the bracket, the flange part that abuts one side of the bracket, and the locking member mounting part where the locking member that clamps the bracket is mounted between this flange part are integrally connected to each other. In the outer wire terminal fitting made of
Since the caulked portion is disposed within the support hole and integrally connects the flange portion and the shaft portion, the overall length of the terminal fitting can be significantly shortened despite the presence of the caulked portion. Therefore, it is possible to reduce the size of the device. Moreover, the end fitting is always fixed to the bracket by the bracket being held between the flange portion and the locking member, and the caulking portion is also always held within the support hole, so the caulking portion can be held using the bracket. It can always be effectively protected from collision with other objects, and can also contribute to improving its durability.

In addition, since the caulking part is made smaller in diameter than the shaft part so that an annular gap is formed between the outer circumference of the caulking part and the inner circumference of the support hole, distortion and unevenness may occur on the outer circumference of the caulking part due to the caulking process. Even if this occurs, the shaft portion and the support hole can be properly fitted without interfering with the inner periphery of the support hole, which is effective in preventing rattling of the fitting portion. Moreover, the flange portion and the shaft portion are integrated into each end of the caulked portion in the shape of an outward facing brim, thereby effectively reinforcing both ends of the caulked portion, so that the caulked portion itself is thin-walled and cylindrical. However, the required rigidity and strength can be imparted to the caulked portion, and the durability of the caulked portion can be further improved.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of a brake operation system in a vehicle showing an embodiment of the present invention, and FIG. 2 is a sectional view showing a conventional structure. B... Bracket, Ba... Support hole, S... Gap, W... Bowden wire, Wo... Outer wire, Wi... Inner wire, 8... Locking member, 1
DESCRIPTION OF SYMBOLS 1... Terminal fitting, 12... Caulking part, 13... Flange part, 14... Shaft part, 15... Locking member attachment part, 16... Boot attachment part.

Claims (1)

[Scope of utility model registration request] A thin-walled cylindrical caulking part 12 that fits and is caulked to the outer periphery of the end of the outer wire Wo, and a shaft part 14 that fits and is supported in the support hole Ba of the bracket B for supporting the outer wire Wo. , a flange portion 13 that abuts one side of the bracket B.
and a locking member mounting portion 15 to which a locking member 8 that engages with the other side of the bracket B and clamps the bracket B between it and the flange portion 13 is installed and are integrally connected to each other. In the terminal fitting for the outer wire of Bowden wire, the caulking portion 1
2 is disposed in the support hole Ba so as to integrally connect the flange portion 13 and the shaft portion 14, and the outer periphery of the caulked portion 12 and the support hole
So that an annular air S is formed between the inner circumference of Ba and
A terminal fitting for an outer wire of Bowden wire, characterized in that the caulked portion 12 has a smaller diameter than the shaft portion 14.