JPS61266813A - Cable connector - Google Patents

Abstract

PURPOSE:To prevent interference of a connector with other components when installed in a limited space with the connector's small size and light weight by forming opposed insertion holes for respective clinching pieces through both connection walls and by forming cable guide slots extending from respective insertion holes. CONSTITUTION:A clinching piece 14, when inserted through an insertion hole 28 and inclined sideways, can be prevented from interfering with a connection wall 22 by making the clinching piece escape into an insertion hole 32. Especially a projecting end 18 of a cable can escape through a cable guide slot 34 formed through the opposed connection wall 22. Naturally it is also similar for the insertion of a clinching piece 16. Since the directions of cable guide slots 30 and 34 are opposite each other on engage-stop walls 24 and 26, displacement of the connector relative to the cables in case of any slack in a cable 10 or 12, can be limited to either one side. Accordingly a distance T between both connection walls can be made small so that the connector can be made small-sized and light-weight for preventing interference with other components.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to improved technology for cable connections, particularly connections used to connect cables to each other.

(Prior Art) Conventionally, cables used in, for example, parking brake devices of automobiles are routed from the operating lever on the driver's seat to the parking brake mechanism. The cable extending from the operating lever and the cable extending from the parking brake mechanism are connected via a coupling.

In this case, since the cable is passed through a narrow space, the connection is required to be small and lightweight.

As a conventional cable connection, for example, the one shown in FIG. 6 is known.

This conventional cable connection B has connection wall surfaces 50. S 2 is formed, and locking wall surfaces 54 and 56 are formed facing each other in the wide width direction, and an insertion hole 58 for a caulking piece is formed in one connecting wall surface 50, and the locking wall surface 54 is formed from the insertion hole 58, respectively. It had a structure in which a cable guide groove 60.62 was formed extending in the opposite direction to the center of the cable.

Then, using this cable connector B, the cable 70.
72, as shown in Fig. 7, use a caulking piece 74.7 fixed to the tip of the cable 70.72.
6 to the locking wall surfaces 54 and 56 of cable connector B, respectively.
In this case, as shown in FIG. 8, for example, insert the caulking piece 74 into the interior through the insertion hole 58, then turn the cable 70 horizontally along the cable guide groove 60, and insert the caulking piece 74. Locking wall surface 5
It is made to engage with the inner surface of 4.

(Problems to be Solved by the Invention) However, in this conventional cable connector B, the insertion hole 58 for the caulking piece is provided only in one connecting wall surface 50, and the insertion hole 58 in the other connecting wall surface 52 Since the opposing position is a wall, it was necessary to widen the opposing interval T between the connecting wall surfaces 50 and 52 in order to insert the caulking piece through the insertion hole 58 and tilt it sideways.

In particular, in order to strengthen the caulking bee or the caulking to the cable, a protrusion 78 is provided at the tip of the cable by about 2 [11
The presence of this protrusion 78 also requires the above-mentioned opposing interval T1 to be widened, which has been an obstacle to reducing the size and weight of the cable connector B.

This cable connector B also has a cable guide groove 60.
62 are formed in the same direction (downward in FIG. 6) on the locking wall surfaces 54 and 56, so if the cables 70 and 72 become slack, the cables 70 and 72 will bend as shown in FIG. There is also a problem in that the connector B is biased downward as a whole with respect to 70 and 72, and as a result, it catches or interferes with surrounding parts, which impedes the operation of the cable.

It is possible to increase the diameter of the insertion hole as a means of making it easier to incorporate the caulking piece while keeping the facing distance between the connecting walls narrow. In particular, when the cable becomes slack, the problem arises that the caulking piece is likely to come off from the second insertion hole.

(Means for Solving the Problems) The present invention has been made in order to solve the problems of the conventional art, and as a technical means for that purpose, in the present invention, connecting wall surfaces are formed facing each other in the narrow width direction. At the same time, a locking wall surface is formed facing in a wide width direction perpendicular to the facing direction of the connecting wall surface, and an insertion hole for inserting a caulking piece fixed to the tip of the cable is formed in the one connecting wall surface. Along with
A cable guide groove is formed extending from the insertion hole to approximately the center of one of the locking wall surfaces, and an insertion hole for a caulking piece is formed in the other connecting wall surface opposite to the insertion hole, A configuration is adopted in which a cable guide groove is formed extending from the insertion hole mainly at the substantially central portion of the other locking wall surface.

(Function) Therefore, in the cable connector of the present invention, insertion holes for the caulking pieces are formed in opposing positions on both connection walls, and cable guide grooves are formed extending from both insertion holes. Therefore, when inserting a caulking piece through the insertion hole and tilting it sideways, interference between the caulking piece and the connecting wall surface can be avoided through both insertion holes. The cable can escape through the cable guide groove formed on the connecting wall surface.

Furthermore, since the cable guide grooves are oriented in opposite directions on both locking wall surfaces, even if the cable becomes slack, the coupling tool can be biased only on one side with respect to the cable.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

In addition, in this embodiment, the parking brake device P of the automobile
The explanation will be given by taking as an example the cable connector A used for this purpose.

In the parking brake device P, an operating lever 2, a drum brake, and several parking brakes 6 built in ↓ are connected by a control F roll cable 8, and the operating force to the operating lever 2 is transmitted to the parking brake mechanism via the control cable 8. The structure is such that braking is applied to the drum brake gear 4 by transmitting the signal to the drum brake gear 6 (Fig. 5).

The control cable 8 has two cables 10 and 12 connected in the middle due to the wiring. In this case, one end is connected to the control lever 2, and the other end is connected to the parking brake mechanism 6. cable 10
and are connected via a cable connector A (hereinafter referred to as "connector").

Incidentally, a caulking piece 14.16 for connection is fixed to the tip of each cable 10.12, and in this case, the caulking piece 14.16 is attached to the cable 10.12.
It is attached with a protrusion 18° 18 of about 2 mm left at the tip of the cable 10.18, and this is a means to ensure the strength of the crimping piece 14.16 against the cable 10.12.

The connecting tool A is formed into a rectangular endless shape made by cutting a flat square pipe material into ring shapes, and the wall surface facing in the narrow width direction is a connecting wall surface 20.22, and the connecting wall surface 20.22
A wall surface facing in the wide direction and perpendicular to the facing direction is the locking wall surface 24.26, and the one connecting wall surface 2
An insertion hole 28 for the caulking piece 14 is formed in the center of 0, and the connecting wall surface 20 is inserted from one of the insertion holes 28.
A cable guide groove 30 is formed extending through the locking wall surface 24 to the center of the locking wall surface 24, and a connecting wall surface 22 for external force.
An insertion hole 32 for the caulking piece 16 is formed opposite the insertion hole 28 in the center thereof, and extends from the insertion hole 32 through the connecting wall surface 22 to the center of the locking wall surface 26 for external force. A cable guide groove 34 is formed (Fig. 1).
.

Generally, when the car is a right-hand drive, the cable 12 extending from the operating lever 2 is as shown in FIG.
The cable 12 is routed so that it passes through the side of the engine cover 36, passes through the 70a 40, and reaches the rear, and when the vehicle is applied to a left-hand drive vehicle, the cable 12 is routed after passing through the floor. In order to do this, as shown by the imaginary line in FIG. 5, the cable 12 is laid horizontally at the upper edge of the engine cover 36, and then passed through the side of the engine cover 36 and penetrated through the floor 40 as in the case of the right-hand drive. I have to.

And cable 12 when applied to this left handle
The horizontal portion of the engine cover 36 is held by a holder 38 integrally formed on the upper edge of the engine cover 36. This has the advantage that the holder 38 can be integrally formed with the propeller shaft cover 36, and the installation of the holder 38 is easy. This has the advantage of saving time and effort.

Next, the operation of this embodiment will be explained.

To connect the cables 10 and 12 using the connector A of this embodiment, both cables 10 and 12 are connected as shown in FIG.
Both cables 10.12 are stretched under tension with the crimping pieces 14.16 fixed to the ends of the cables 10.16 engaged with the inner surfaces of the locking walls 24.26, respectively.

In this case, for example, in order to engage one of the caulking pieces 14 with one of the locking wall surfaces 24, the caulking pieces 14 are inserted into the interior through the insertion holes 28 formed in one of the connecting wall surfaces 20, and then the cable 10 is inserted into the cable guide. By turning it sideways rather than along the groove 30, the crimp piece 14 is laid down sideways, and the crimp piece 14 in the laid-down state is engaged with the inner surface of one of the locking wall surfaces 24 (FIG. 3).

At this time, in this embodiment, insertion holes 28.32 are formed in both connecting wall surfaces 20.degree.
2 and extend in opposite directions from cable guide groove 3.
0.34 is formed, so the above caulking piece 1
Connecting wall surface 20.22 due to installation of 4 and sideways movement
Interference between the diagonal portion caused by the inclination of the crimping piece 14 and the gap between the insertion hole 28 and the crimping piece 14,
'It can be released through the gap between the other insertion hole 32 and the caulking piece 14 and the insertion hole 28.32, and the protrusion 18 of the cable 14 can also be released through the cable guide groove 34 formed on the opposing connecting wall surface 22. I can do it.

Therefore, in this embodiment, there is no need to widen the facing interval T between the connecting wall surfaces 20 and 22 in order to prevent interference with the caulking piece 14 and catching on the protrusion 18 during cable connection work, and the connecting tool A It is possible to achieve smaller size and lighter weight.

Furthermore, in the connector A of the embodiment, since the directions of the cable guide grooves 30.34 on the locking walls 24, 26 are opposite, the cable 10.12 may become slack and may not engage with the caulking piece 14.16. Even if the engagement state with the stop wall surfaces 24 and 26 sag, the cable 1
2, one of the locking wall surfaces 26 is connected to the cable guide groove 34.
It is in a state where it is locked by the back wall of the wall, and it is possible to get away with shifting only on one side, rather than shifting the whole thing.

Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration of the present invention is not limited to these embodiments, and even if there are design changes within the scope of the invention, the present invention included in the technical scope of

For example, in the embodiment, a coupling device used in a parking brake device of an automobile is taken as an example, but the present invention is not limited to this, and the present invention can be applied to any coupling device for connecting cables to each other.

Further, the size of the insertion hole is preferably made as large as possible, taking into consideration the ease with which the caulking piece can come off and the strength of the connector.

(Effects of the Invention) As explained above, according to the present invention, when engaging the crimping piece, interference with the crimping piece is released by both insertion holes, and the hooking with the protruding end portion of the cable is prevented from being connected to the opposing connection. The cable guide groove formed on the wall allows the cable to escape, and if the cable sag, the external connector can be kept from shifting to one side only.

This allows the connector to be made smaller and lighter, so
This prevents interference with other parts when installed in a narrow space and ensures smooth operation of the cable.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a cable connection according to an embodiment of the present invention;
Figure 2 is a cross-sectional view of the cables connected using the cable connector, Figure 3 is a cross-sectional view showing the process of connecting the cable connector, and Figure 4 is a sectional view showing the cables of the cable connector being loosened. 5 is a perspective view of a parking brake device using the cable connection, FIG. 6 is a perspective view of a conventional cable connection, and FIG. 7 is a perspective view of a parking brake device using the conventional cable connection. FIG. 8 is a cross-sectional view showing the connecting process of a conventional cable connector, and FIG. 9 is a cross-sectional view of the conventional cable connector in a state where the cables are loosened. A: Cable connector 10: Cable 12: Cable 14: Crimping piece 16: Crimping piece 20: Connection wall surface 22: Connection wall surface 2, t: Locking wall surface 26: Locking wall surface 28: Insertion hole 30: Cable guide groove 32: Insertion hole 34: Cable guide groove

Claims (1)

[Claims] 1) Connecting wall surfaces are formed facing each other in the narrow width direction, and
A locking wall surface is formed opposite to the width direction perpendicular to the facing direction of the connecting wall surface, and an insertion hole for inserting a caulking piece fixed to the tip of the cable is formed in the one connecting wall surface, and
A cable guide groove is formed extending from the insertion hole to approximately the center of one of the locking wall surfaces, and an insertion hole for a caulking piece is formed in the other connecting wall surface opposite to the insertion hole, A cable connector characterized in that a cable guide groove is formed extending from the insertion hole to approximately the center of the other locking wall surface.