JPH0311087Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a parking brake device that is connected to a brake operating section of a vehicle via a cable.

``Prior Art'' A conventional parking brake device consists of a base bracket fixed to the vehicle body and a ratchet plate having sector teeth, which are integrally formed, and the base of the parking lever is pivotally supported by the base bracket. When pivoting, the ratch plate, a pawl that engages with and disengages from the sector teeth of the ratch plate, and a release rod that operates the pawl are inserted into the approximately U-shaped base of the parking lever, and then Generally, a pivot pin was inserted from the side, which is a direction perpendicular to the direction of insertion.

``Problem that the invention aims to solve'' However, in such conventional parking brake devices, the direction in which parts such as the ratchet plate are inserted is different from the direction in which the pivot pin is inserted, so there is a problem in the assembly operation. Since the direction of the tool or product must be changed depending on the direction, there have been problems in that work efficiency is low and automation is difficult, hindering process rationalization.

The present invention has been made by focusing on such conventional problems, and an object of the present invention is to provide a parking brake device that solves the above problems by making the mounting direction of the parts and the direction of the pivot of the parking lever substantially the same. It is an object.

``Means for Solving the Problems'' The gist of the present invention to achieve this purpose is to provide a parking brake device that is connected to the cable operating part of the vehicle via a cable, and that is fixed to the vehicle body. A ratchet plate having sector teeth is fixed substantially parallel to the main wall of the base bracket, the base of the parking lever is rotatably held between the ratchet plate and the base bracket, and a cable is connected to the parking lever. The parking brake device is characterized in that it is equipped with a pawl that engages with and disengages from sector teeth of the ratchet plate, and a release rod that operates the pawl.

``Operation'' The base bracket, parking lever, and ratchet plate are stacked in the same direction as the parking lever's axis, and the parking lever is rotatably clamped by fixing the ratchet plate to the base bracket in the same direction. In addition, the parking brake device can be manufactured logically and costs can be reduced.

“Embodiment” An embodiment of the present invention will be described below based on the drawings.

1 to 3 show an embodiment of the present invention, and the parking brake device 10 includes a base bracket 20 fixed to the vehicle body, a ratchet plate 30 fixed to the base bracket 20,
Base bracket 20 and ratchet plate 30
The main part is a parking lever 40 rotatably held between.

The base bracket 20 has mounting legs 22 and 23 bent at the lower end of the main wall 21 on the vertical surface, which contact the vehicle body, and a cable mounting tube 24 is fixedly installed at one end. Reinforced embossing 21a, 2
1b is formed.

The ratchet plate 30 has a flat plate shape, and has a pivot boss 31 formed at its base, and sector teeth 32 centered around the pivot boss 31 are carved at its tip. A caulking hole 2 that abuts the main wall 21 of the bracket 20 and is bored in the main wall 21 of the base bracket 20
5, 25, etc., and are fixed substantially parallel to the main wall 21 with rivets 33, 33, which are inserted and caulked.

A pawl 50, a release rod 60, and a handle 70 are attached to the parking lever 40. An arm 42 extends from a flat base 41 of the parking lever 40, and a ratchet plate 3 is attached to the base 41.
A pivot hole 43 that loosely fits into the pivot boss 31 of No. 0 is drilled, and a reinforcing flange 41a is provided around the outer periphery, and the end portion extending approximately radially from the pivot hole 43 forms a cable connection portion 44. The cable connection portion 44 is provided with a connection hole 44a.

The arm portion 42 is formed into a cylindrical shape by extending and curling the base portion 41 to the reinforcing flange 41a, and has a spring stopper 42a cut and raised inwardly at the tip and a split groove 42b formed vertically.

The base 41 of the parking lever 40 is pivotally supported by the pivot boss 31 of the ratchet plate 30, and is connected to the base of the ratchet plate 30 and the base bracket 2.
It is movably clamped to the main wall 21 of 0.

A pivot hole 45 is provided in the middle part of the parking lever 40.
A pole 50 is pivotally supported in this pivot hole 45 via a pivot pin 51.

The pawl 50 has a pawl 52 formed at one end that engages and disengages with the sector teeth 32 of the ratchet plate 30, and an engagement notch 53 connected to the release rod 60 at the other end.
is formed, and a retaining plate 54 is fixed to the front side of the engagement notch 53. The retaining plate 54 may be integrally formed with the pole 50 body.

The release rod 60 has a hook portion 6 at one end of the main rod 61 that engages with the engagement notch 53 of the pawl 50.
2 is formed, and a button 63 is attached to the other end of the main rod 61.
is fixedly installed, and a biasing coil spring 64 is fitted to the main rod 61 on the side closer to the hook portion 62 than the button 63, and the split groove 42 of the arm portion 42 of the parking lever 40
The biasing coil spring 6 is inserted into the arm portion 42 from b.
The end of 4 on the hook portion 62 side is engaged with the stopper 42a.

A fitting hole 71 bored in the center of the handle 70 is pressed against the arm 42 of the parking lever 40, and the button 6 is inserted from the tip of the fitting hole 71 or the tip of the arm 42.
3 stands out.

An end fitting 82 of an inner cable 81 of a cable 80 is connected to the connection hole 44a of the cable connection portion 44 of the parking lever 40 via a pin 83.
A fitting 85 of an outer casing 84 is pressed into the mounting tube 24 of the base bracket 20. The end of the cable 80 is connected to a brake operating section (not shown).

Parking brake device 10 having the above configuration
For example, the assembly is performed as follows.

First, lay down the base bracket 20, and then turn the main wall 2
The parking lever 40 is positioned and placed on the base bracket 20, which is set so that the lever 1 faces upward, and the pivot boss 3 is placed on top of the base bracket 20.
1 into the pivot hole 43 of the parking lever 40, place the ratchet plate 30, and then tighten the pivot boss 31.
The tip end surface 31a of the base bracket 20 is connected to the main wall 2 of the base bracket 20.
1, and the tip surfaces 31a are fitted, and the tips of the rivets 33, 33... are inserted into the caulking holes 25 and caulked from the back side.

As a result, the parking lever 40 is rotatably supported with the pivot hole 43 of the base 41 loosely fitted into the pivot hole 43, and the main wall 21 of the base bracket 20
and the ratchet plate 30, and is held without wobbling.

The release rod 60 and pawl 50 are placed on the parking lever 40 in front and behind to fix the ratchet plate 30.

The release rod 60 passes through the groove 42b of the arm 42 before the pawl 50, and releases the arm 42 horizontally.
The end of the coil spring 64 is inserted into the stopper 42.
a.

The pawl 50 engages the hook portion 62 of the main rod 61 of the release rod 60 with the engagement notch 53,
Fit the pole 50 and insert the pivot pin 51 into the pivot hole 45.
The pivot pin 51 is fixed by inserting the tip end thereof and caulking it from the back side of the base 41 of the parking lever 40. The hook portion 62 of the release rod 60 is held down by the retaining plate 54 of the pawl 50, so that it does not come off from the engagement notch 53.

Thereafter, the arm portion 42 of the parking lever 40 is inserted into the fitting hole 71 of the handle 70 and pressed.

The cable 80 can be attached to the end fitting 82 of the inner cable 81 by pressing the end fitting 85 of the outer casing 84 onto the mounting tube 24 of the base bracket 20 in advance, or by pressing it after the assembly is completed.
is connected to the connection hole 4 of the cable connection part 44 of the parking lever 40 via the pin 83 at the same time or after the above-mentioned assembly.
Connect to 4a.

The release rod 60 is biased in the direction in which the button 63 protrudes by the biasing force of the biasing coil spring 64, and the pawl 50 is biased and held counterclockwise in FIG. 1 via the hook portion 62 and the engagement notch 53. Pawls 52 engage sector teeth 32 of ratchet plate 30.

FIG. 1 shows the brake released state, and when the handle 70 is pulled up from this state, the pawl 52 passes over the sector teeth 32 and the parking lever 40 can be rotated clockwise in the figure, and the cable is connected accordingly. The portion 44 also rotates, and the cable 8
0 end fitting 82 is pulled, and the brake operation section performs a braking operation.

When the handle 70 is released, the parking lever 40 attempts to return due to the reaction force of the inner cable 81, but this time the pawl 52 of the pawl 50 cannot overcome the sector teeth 32, so the brake operating section maintains the braking state. .

To release the brake, the button 63 is pressed to displace the release rod 60 in the vertical direction against the biasing force of the biasing coil spring 64. Then, the hook part 6
2 pushes the pawl 50 through the engagement notch 53 and rotates the pawl 50 clockwise, so the pawl 52 disengages from the sector tooth 32 of the ratchet plate 30 and rotates the parking lever 40 counterclockwise. It can be restored by

As a result, the inner cable 81 of the cable 80
The pulling force is removed and the brake operating section is released.

4a to 4f show various modifications of the structure for pivotally supporting the parking lever 40. FIG.

Figure 4a shows caulking protrusion 3 instead of rivet 33.
4, 34... are provided protrudingly from the tip end surface of the pivot boss 31, which has the advantage that the rivet 33 is unnecessary and the number of parts can be reduced. Note that, instead of protruding the caulking projection 34, key points on the tip surface of the pivot boss 31 may be plug welded.

FIG. 4b shows a structure in which a rotation prevention protrusion 35 is provided protruding from the tip end surface of the pivot boss 31 to prevent the main wall 2 of the base bracket 20 from turning.
1 and a slightly thicker pin 35a.
The pivot boss 31 of the ratchet plate 30 and the main wall 21 of the base bracket 20 are brought into contact and fixed by caulking. The advantage is that you only need to caulk in one place.

In Fig. 4c, the neck of the thick caulking pin 36 is deformed to prevent the rotation of the ratchet plate 30, and the pivot boss 31 of the ratchet plate 30 and the main wall 21 of the base bracket 20 are brought into contact with each other and fixed by caulking. It is. There is an advantage that the shape of the ratchet plate 30 can be simple.

In Fig. 4d, the pivot boss 31 of the ratchet plate 30 is omitted and a pivot pin 37 is provided.
The neck portions 37a and 37b of the parking lever 40 are shaped differently to form a shaft portion 37c which rotatably supports the pivot hole 43 of the base portion 41 of the parking lever 40, thereby fixing the ratchet plate 30 to the main wall 21 of the base bracket 20. A base 41 of the parking lever 40 is rotatably supported. There is an advantage that the ratchet plate 30 can be a flat plate.

In FIG. 4e, a pivot boss 46 is provided protruding from the base 41 of the parking lever 40, and the latch plate 30
is made into a flat plate, and the rivets 33,
At 33..., the base bracket 20 and the ratchet plate 30 are caulked and fixed.

In FIG. 4f, neither the base bracket 20 nor the ratchet plate 30 is provided with a pivot boss, and the main wall 21 of the base bracket 20 and the ratchet plate 3
0, and the main wall 21 of the base bracket 20, the pivot plate 38, and the ratchet plate 30 are connected by rivets 38a, 38.
It is caulked and fixed by a...

"Effect of the invention" According to the parking brake device according to the invention, the main parts can be assembled one on top of the other from the same assembly direction, so there is no need to change the posture of the product or tool during assembly operation. The efficient operation enables rational assembly, shortens the assembly time, and reduces costs.Furthermore, it becomes easier to automate and significantly contributes to reducing the manufacturing cost of the parking brake device.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention, and FIG. 1 is a front view of the parking brake device;
2 is an exploded perspective view, FIG. 3 is a sectional view taken along the line of FIG. 1, and FIGS. 4 a to 4 f are sectional views showing various modifications of the structure for pivotally supporting the parking lever. DESCRIPTION OF SYMBOLS 10...Parking brake device, 20...Base bracket, 21...Main wall, 30...Ratchet plate, 31...Pivot boss, 32...Sector tooth, 40...Parking lever, 41...Base, 42 ... Arm part, 43 ... Pivot hole, 50 ... Pole, 60 ... Release rod, 70 ... Handle,
80...cable.

Claims (1)

[Scope of utility model registration request] In a parking brake device that is connected to a brake operating part of a vehicle via a cable, a ratchet plate having sector teeth is fixed approximately parallel to the main wall of a base bracket fixed to the vehicle body, and the ratchet plate and the base are connected to each other. The base of the parking lever is rotatably held between the parking lever and the bracket, and the parking lever is equipped with a cable connection portion, a pawl that engages with and disengages from the sector teeth of the ratchet plate, and a release rod that operates the pawl. A parking brake device characterized by: