JPH0579618U - Clutch pedal structure - Google Patents

Abstract

(57) [Summary] [Purpose] The magnitude of the stepping assistance force is changed with respect to the magnitude of the stepping reaction force. [Structure] A support shaft 3 is rotatably attached to a bracket 1, and a clutch pedal 5 is fixed to the support shaft 3. A receiving groove 9 is formed on the upper end of the clutch pedal 5. Bracket 1
The one end side 12 of the double torsion spring 11 is rotatably mounted on the other end, and the other end side 15 is housed in the receiving groove 9. The receiving groove 9 has a length such that the other end 15 can move.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a vehicle clutch pedal.

[0002]

[Prior Art]

 A structure shown in FIG. 8 is known as a structure of a clutch pedal for operating a clutch used for transmitting power in a vehicle. In this clutch pedal structure, a clutch pedal C is fixed to a support shaft B rotatably attached to a bracket A (support member), and a push rod D connected to a clutch master cylinder (not shown) is connected to the clutch pedal C. It is attached. A receiving groove E (receiving portion) is formed at the upper end of the clutch pedal C, and the other end side of the double torsion spring F (torsion coil spring) rotatably attached to the bracket A is inside the receiving groove E. It is stored in.

When the clutch pedal C is stepped on, the double torsion spring F acts on the stepping reaction force, but when the other end passes through the point G (dead point) in FIG. 9, it acts on the stepping assisting force (virtual See line).

That is, this clutch pedal structure has a turnover function in which the action of the spring reverses midway.

A reaction force of a spring built into the clutch acts on the clutch pedal C, but the stepping force is reduced by the stepping assisting force of the double torsion spring F.

[0006]

[Problems to be solved by the device]

 By the way, if an attempt is made to obtain a stepping assist force of a specific magnitude by the double torsion spring F, a stepping reaction force of the same magnitude acts as shown in FIG. 10 (see the solid line). Therefore, if the magnitude of the pedaling assistance force is increased to correspond to a high-power engine, the magnitude of the pedaling reaction force is also increased, and in particular, the operability is increased due to the increase of the initial pedaling reaction force. Worsens (see dotted line). On the contrary, in some cases, it may be desirable to keep only the magnitude of the stepping assist force low.

Therefore, an object of the present invention is to provide a clutch pedal structure capable of changing the magnitude of the stepping assistance force with respect to the magnitude of the stepping reaction force.

[0008]

[Means for Solving the Problems]

 In order to achieve this object, the clutch pedal structure of the present invention has one end side rotatably attached to a supporting member and the other end side housed in a clutch pedal receiving portion by a turn coil spring to provide a turnover. In a clutch pedal structure having a function, the shape of the receiving portion is configured such that when the clutch pedal is depressed, the other end side of the torsion coil spring moves along the receiving portion. ..

In many cases, the initial stepping reaction force due to the torsion coil spring is kept low.

[0010]

[Action]

 The distance between the one end side and the other end side of the torsion coil spring also changes according to the movement along the receiving portion on the other end side.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a side view showing a first clutch pedal structure according to the present invention.

A support shaft 3 is rotatably attached to the bracket 1 (support member), and a clutch pedal 5 is fixed to the support shaft 3. A recess is formed in the upper end of the clutch pedal 5, and a sliding member 7 made of resin is fitted in the recess to form a receiving groove 9 (receiving portion). Also, one end side 12 of a double torsion spring 11 (torsion coil spring) is rotatably attached to the bracket 1 via a resin bearing 13, and the other end side 15 is housed in a receiving groove 9. The receiving groove 9 has a length such that the other end side 15 can move.

By making the contact portion 16 of the receiving groove 9 curved, the other end side 15 moves smoothly (see reference numeral 16a in FIG. 2).

Reference numeral 17 in the drawing denotes a clutch switch, and 19 denotes a push rod connected to a clutch master cylinder (not shown).

FIG. 3 to FIG. 5 are views showing the operating state of the double torsion spring 11 in the stepping-in process.

When the clutch pedal 5 is not depressed, the other end 15 of the double torsion spring 11 is located at the upper end of the receiving groove 9 (one end 12 and the other end 15 as shown in FIG. 3). The angle θ between the straight line connecting to and the contact portion 16 of the receiving groove 9 is smaller than 90 degrees). Therefore, the distance a between the one end side 12 and the other end side 15 becomes large as compared with the conventional structure (see the phantom line) in which the other end side is immovably accommodated in the lower end position of the receiving groove 9. (A> b). Therefore, the magnitude of the initial stepping reaction force by the double torsion spring 11 is smaller than that of the conventional structure.

When the clutch pedal 5 is depressed, the other end side 15 of the double torsion spring 11 moves to the lower end of the receiving groove 9 (θ> 90 degrees) as shown in FIG. The state is similar to the conventional structure (a = b).

When the clutch pedal 5 is further depressed, as shown in FIG. 5, the double torsion spring 11 applies a depression assisting force in the same state as the conventional structure (a = b, θ> 90 degrees).

FIG. 6 is a diagram showing the acting force characteristics of the double torsion spring 11.

The magnitude of the initial stepping reaction force by the double torsion spring 11 (see the solid line) is smaller than that of the conventional structure (see the dotted line). After that, the magnitude of the stepping reaction force and the stepping assist force are almost the same as in the conventional structure.

FIG. 7 is a side view showing a second clutch pedal structure according to the present invention.

Since the receiving groove 23 of the clutch pedal 21 is extended downward with respect to the conventional structure, the magnitude of the stepping assist force can be suppressed lower than that of the conventional structure.

[0024]

[Effect of the device]

 As described above, according to the clutch pedal structure of the present invention, the distance between the one end side and the other end side of the torsion coil spring changes due to the movement along the receiving portion on the other end side. The magnitude of the stepping assist force can be changed with respect to the magnitude of.

If the magnitude of the initial stepping reaction force is kept low, excellent operability can be secured even for a high-power engine.

[Brief description of drawings]

FIG. 1 is a side view showing a first clutch pedal structure according to the present invention.

FIG. 2 is a diagram showing a case where a contact portion has a curved shape.

FIG. 3 is a diagram showing an operating state of a double torsion spring in a stepping-on process, and is a diagram showing a state in which a clutch pedal is not stepped on.

FIG. 4 is a diagram showing an operating state of the double torsion spring in the stepping-in process, and is a diagram showing a state in which the other end side of the double torsion spring is located at a dead point.

FIG. 5 is a diagram showing an operating state of a double torsion spring in a stepping-on process, and is a diagram showing a state in which a clutch pedal has been depressed.

FIG. 6 is a diagram showing the acting force characteristics of a double torsion spring.

FIG. 7 is a side view showing a second clutch pedal structure according to the present invention.

FIG. 8 is a side view showing a conventional clutch pedal structure.

FIG. 9 is a view showing a working state of a double torsion spring having a conventional clutch pedal structure.

FIG. 10 is a diagram showing a change in acting force of a double torsion spring having a conventional clutch pedal structure.

[Explanation of symbols]

1, A bracket (supporting member) 5, 21, C clutch pedal 9, 23, E receiving groove (receiving portion) 11, F double torsion spring (torsion coil spring) 12 one end side 15 other end side

Claims (2)

[Scope of utility model registration request] 1. A clutch pedal structure in which one end side is rotatably attached to a support member, and the other end side is housed in a receiving portion of a clutch pedal and has a turnover function by a torsion coil spring. A clutch pedal structure characterized in that the shape of the portion is configured such that when the clutch pedal is depressed, the other end side of the torsion coil spring moves along the receiving portion. 2. The clutch pedal structure according to claim 1, wherein the torsion coil spring exerts an initial depression reaction force which is suppressed low.