JPS644586Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is based on the idea that when the clutch pedal returns,
This relates to a stopper cushion installed on a part of this pedal so as to come into contact with the stopper on the body side.

In the past, for example, in a clutch pedal equipped with a turn-over mechanism, the return force on the pedal was significantly greater than in a normal clutch pedal, which caused problems with the durability of the stopper clutch.

In view of these circumstances, the object of this invention is to provide a stopper cushion that exhibits sufficient durability even when a large return force is applied to the clutch pedal.

Next, the configuration of this invention will be explained in detail according to an embodiment shown in the drawings.

First, in FIGS. 1 and 2 showing an embodiment of a clutch pedal employing a turnover mechanism, a clutch pedal 1 has a pedal boss 1a.
is rotatably supported by a pedal shaft 2 fixed to a pedal bracket 3 shown in FIG. Therefore, as the pedal 1 is depressed, it is rotated about the axis of the shaft 2. The clutch pedal 1 also includes a clutch master cylinder (not shown).
A clevis 5 connected to the push rod 4 is connected by a clevis pin 6.

Behind the clutch pedal 1 (to the right in FIG. 1), a turnover arm 7 rotates around the axis of an arm shaft 8 fixed to a part of the pedal bracket 3 (not shown). It is set up to obtain. Approximately the middle portion of this arm 7 and a portion of the clutch pedal 1 are interconnected by a turnover rod 9. As a result, the arm 7 rotates in conjunction with the depression of the clutch pedal 1. Further, a locking pin 1b is integrally provided on the clutch pedal 1 and protrudes from the pedal 1, and a tension pin 1b is provided between this pin 1b and a locking pin 10 protruding from the free end of the turnover arm 7. A spring spring 11 is applied.

The force of this spring 11 is the force of the clutch pedal 1
When the pedal is in the state shown in FIG. 1, it acts to pull the pedal 1 back in the return direction through the arm 7 and rod 9. When the pedal 1 is depressed to a certain stroke position (generally a pedal stroke position of several tens of millimeters), as described above, based on the displacement of the arm 7 that rotates in conjunction with this, the elasticity of the tension spring 11 is Through this arm 7 and rod 9, a force acts to push the pedal 1 in the opposite direction to the direction in which the pedal is depressed. That is, the tension spring 11 exerts a pedal return force until the clutch pedal 1 is depressed to the above-described certain stroke position (referred to as the turnover point), and after this turnover point, it exerts an auxiliary force to the pedal depression force. It shows itself.

Now, behind the clutch pedal 1, there is a first
As shown in the figure, a stopper 12 that determines the return position of the clutch pedal 1 is connected to a part 3A of the pedal bracket 3 by two lock nuts 1.
3 so that the amount of protrusion can be adjusted. On the back surface of the clutch pedal 1, a pedal seat 14 is integrally fixed to the pedal 1 at a location corresponding to the above-mentioned stopper 12 by means such as welding. This seat 14 is provided with a stopper cushion 18 for buffering the return force acting on the pedal 1 due to the elasticity of the tension spring 11 between it and the stopper 12.
is provided. The cushion 18 is made of a material such as rubber and includes a disk-shaped cushion main body 15, as is clear from FIG. . This leg portion 17 is connected to the pedal seat 14
It is inserted into the hole 14a, and has a stepped portion 17a for locking into the hole 14a.

Stopper cushion 18 in this example
has a reinforcing member 1 inside the cushion body 15.
6 is inserted (see Figure 3). This reinforcing member 16 is made by pressing a metal plate into the shape (hat shape) shown in FIG. 3, and is intended to improve the durability of the cushion body 15. Therefore, this stopper suspension 18 has sufficient durability against the strong pedal return force (approximately four times the force of a normal pedal return spring) caused by the turnover tension spring 11 described above. It can be demonstrated.

In addition, as a molding means for the above-mentioned stopper cushion 18, the above-mentioned reinforcing member 16 is placed in the mold,
The rubber material is positioned using a support member such as a pin protruding from the inner surface of the mold, and then a rubber material is poured into the mold and vulcanized. In order to improve the flow of the rubber material during this molding, an appropriate number of holes 16a are bored in the reinforcing member 16 (see FIG. 3). In addition, the Stotsu Park Cushion 18
As a result of making a prototype, it was found that the hardness of the rubber depends on the condition of
It has been found that the plate thickness of the reinforcing member 16 is preferably about 75° and about 0.8 mm from the viewpoint of workability.

In the embodiment shown in FIG. 4, the reinforcing member 16 has a simple disk shape, and its workability is simplified.

As described above, the present invention is achieved by providing a rigid reinforcing member floating above the pedal seat on the side of the cushion body that comes into contact with the stopper on the body side, which is attached to the pedal seat that is integrated with the clutch pedal. In the cushion body, the side that repeatedly separates from and comes into contact with the stopper as the clutch pedal is depressed and returned is protected by the above-mentioned reinforcing member, and when this reinforcing member is floating above the pedal seat, the cushion body is protected by the reinforcing member. can maintain proper function.
For this reason, the cushion body can be protected from the severe impact when the pedal returns without impairing its shock-absorbing function when the pedal returns. It has the effect that it can be sufficiently applied as a stopper cushion when the return force to the pedal is strong.

[Brief explanation of drawings]

The drawings show an embodiment of this invention; FIG. 1 is a front view schematically showing a clutch pedal equipped with a turnover mechanism, and FIG. Side view seen from the back side)
FIG. 3 is an enlarged sectional view of the stopper cushion, and FIG. 4 is a sectional view corresponding to FIG. 3 of the stopper cushion of a different embodiment. 1...Clutch pedal, 12...Stopper,
14... Pedal seat, 18... Stopper cushion, 15... Cushion body, 17... Leg portion, 16... Reinforcement member.

Claims (1)

[Scope of utility model registration request] A stopper cushion is a stopper cushion in which a cushion body is attached to a pedal seat integrated with a clutch pedal so as to come into contact with a stopper on the body side when the pedal returns, and a rigid member is attached to the side of the cushion body that comes into contact with the stopper. A stopper suspension for a clutch pedal, characterized in that the reinforcing member is provided in a state floating from the pedal seat.