JPS58112862A - Two-operation type parking brake - Google Patents

Abstract

PURPOSE:To prevent the erroneous releasing of a brake by providing a compression/twist spring between a shaft and a handle in a parking brake for constructing the handle and the shaft to be in one body in their rotational direction when the handle is pushed in against the spring. CONSTITUTION:A knob 8 is fast fixed in the rear part of a shaft 4, and a handle 10 is fitted on the rear end to be easily slided. A cylindrical part 13 fixed on a core member 12 of the handle 10 is fitted to the shaft 4, while a compression/ twist spring 14 is provided between the top of the shaft 4 and the knob 8 for pushing the handle 10 backward. When the handle 10 is pushed in against the spring 14, a projection 17 on the above-said cylindrical part 13 is pushed into a groove part 18 on the shaft 4, and the handle 10 is caught by the shaft 4 to be in one body in the rotational direction. Meanwhile, a key 21 is inserted between a groove 19 of the shaft 4 and a groove 20 of the cylindrical part 13 to combine the handle 10 and the shaft 14 in one body when the handle 10 is pulled outward.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a two-operation type parking brake that is easy to operate and inexpensive.Specifically, the handle portion is of the idle swing type, and a knob is provided on the shaft, so that the knob does not stroke. The present invention aims to provide a two-operation type parking brake in which the handle portion can be stroked.

Embodiments of the present invention will be explained below with reference to the drawings. FIG. 7 is a side view showing the entire two-operation type parking brake showing an embodiment of the present invention, and the details of the handle portion are shown in FIG. In Figure 0, which shows the ANA cross-sectional view of (
January = Mounting bracket whose front part is fixed to the vehicle body (-Mount bracket whose rear part is supported and attached to the vehicle body)
3) A guide supported by the guide (1), in which a shaft (ri) is inserted so as to be movable back and forth)
The tip of (lI) is connected to a parking brake (not shown), and is always biased in the direction of the arrow in the direction of releasing the parking brake. −(q) is connected,
The wire (&) is hung over a groove pulley (6) so that its direction can be changed. Further, ratchet teeth (IIa) are provided on the upper surface of the shaft (4'), and the ratchet teeth (+a) have pawls (7) attached to the guide (1).
) are engaged, and in this engaged position, the shaft (lI) is fixed in its position, and the applied parking brake is held.

A knob (g) detailed in Fig. 2 is fixed to the rear position of the shirt (lI) by a bottle (9), and a handle (l) is fitted to the rear end so as to be slidable in the axial direction. The knob is made of synthetic resin and has a finger rest (//) on the upper part of the knob, and the grip part of the handle (10) is made of synthetic resin and has a core material inside. /) is buried.
A cylindrical body part (13) that fits into the end of the shirt (lI) is fixed to the core material (12), and the cylindrical body part (/3)
A compression and torsion spring (the left side is the shirt) is fitted around the outer periphery of the spring (41) and is interposed between the tip of the handle and the knob (g). The outer periphery of the compression/torsion spring (1) is covered with a cover (/S), and a spring (16) is stretched between the cover (/S) and the handle (1).

There is a distance S between the end faces of the handle (L) and the shaft (DA), and the handle (L) can be pushed in by the distance S between the springs (/4'). The protrusion (l) provided on the handle (/no's cylindrical body (13)) enters the illumination (cog) formed on the shaft (ri), and the handle (10) and the shirt (4Q) engage. It is supposed to be done.

Between the groove [/q] of the shaft (ri) and the cylindrical body part (/3) (7') groove (,2/)) of the handle (10)
) Key C2/) (21) is inserted, and this key (C2/) is used to unite the handle (10) and the shaft (lI) when the handle (/) is pulled outward. Also, to prevent the key (:lI) from coming off, the sea urchin cylinder part (/
3) is held down by a clamp (U) fitted into the groove.

(katana) is a bottle installed in the shaft (da), and the bottle (
:13) so that the rotational position of the handle [10] is maintained.

Next, to explain the operation, to apply the parking brake, first grasp the handle [10] and pull it backwards, then the key (ko/) moves in the groove (19) of the shaft (lI), and the key ( By engaging the end of the groove (19), the handle (l) and the shaft (lI) become integrated.
shirt) (lI) is pulled out. In this case, the ratchet teeth (IIa) slide against the pawl (7), and in the pulled out position, the ratchet teeth (IIa) and the pawl (7) engage, and the parking brake is applied.

Next, to release the parking brake from this state,
Hold the handle (10) and press the finger grip (//
), grip the handle [10] with your fingers hooked on the handle (/).
4') side and the protrusion (17) of the cylindrical body (13)
enters the groove (18) of the shaft (ll).

In this state, the handle protrusion (17) is a bottle (,l,?)
When the handle (/) is rotated in the direction away from the handle (4'), it also rotates in the same direction as the handle (/), causing the ratchet tooth (IIa) to engage with the pawl (7). Since the handle will come off, the handle Cl0) will remain in this rotating state.
When the tensile force of the shaft is weakened, the wire
(5) is pulled in the forward direction to release the parking brake.

The present invention is constructed as described above in detail, and when the handle is pulled rearward to apply the parking brake, the shaft is pulled out integrally with the handle via the key, and the parking brake is applied. Also, when releasing the parking brake, put your finger on the knob fixed to the shaft and squeeze the handle.The handle moves toward the shaft and its protrusion enters the groove of the shaft. The handle is integrated in the direction of rotation, so when you turn the handle, the shaft also rotates, the ratchet and pawl disengage, and the sharad is retracted, allowing you to release the parking brake. In this way, the steering wheel is always spinning, and the steering wheel and shaft do not become one body unless you put your finger on the knob and pull it, so even if you touch the steering wheel by mistake, the parking brake will not be released, making it safe. O is

[Brief explanation of drawings]

FIG. 7 is a side view of a two-operation parking brake showing an embodiment of the present invention, FIG. 2 is a detailed sectional view of the /1 handle portion in FIG. 7, and FIG. 3 is a view taken from A to 8 in FIG. O is a cross-sectional view. Explanation of the main parts of the diagram. C. Guide C. 3. Mounting bracket D. Shaft lIa. Ratchet teeth S. Wire 7. Claw g. Knob 9...Bin 10...Handle
l/...Finger hook part 13...Cylinder body part
/Da...Torsion spring/7...Protrusion/
8...Groove portion 19...Groove 20...
・Groove 21...Key here...Clamp

Claims (1)

[Claims] A shaft, which is partially equipped with ratchet teeth and is always biased in the retracting direction to release the parking brake, is inserted so as to be movable back and forth through a guide whose front and rear sides are supported by a mounting bracket attached to the vehicle body.・σ of the shaft [
In a parking brake in which the extended position is fixed by a pawl attached to the guide meshing with the ratchet teeth, a knob is fixed to the shaft, and the knob is connected to the shaft via a key fitted to the end of the shaft. A compression and torsion spring is interposed between the shirt and the handle integrated in the pull-out direction, and when the handle is pushed against the spring,
A two-operation type parking brake characterized in that a protrusion provided on the handle enters a groove in the shaft so that the handle and the shaft become integrated in the rotational direction.