JP3244190B2 - Pedal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pedal device having a pedaling force assisting spring, and is particularly suitable for application to a brake pedal device and a clutch pedal device of an automobile.

[0002]

2. Description of the Related Art FIGS. 4 and 5 show a main part of a conventional brake pedal device 20 of this kind. This device 2
Reference numeral 0 denotes a support shaft 22 fixed to the pedal bracket 21, a spacer 23 fixedly fitted to the outer periphery of the support shaft 22, and a pedal lever rotatably mounted on the outer periphery of the spacer 23. 24, and a pedaling force assisting spring 25 for urging the pedal lever 24 to rotate.

More specifically, a support shaft 22 composed of a bolt member is fastened and fixed by a nut 26 in a state of being inserted through the pedal bracket 21, and a cylindrical spacer 23 is fixed to the outer periphery of the support shaft 22. The spacers 23 are fitted in this state, and cylindrical bushes 27a and 27b are fitted around the outer periphery of both ends of the spacer 23. A boss (cylindrical portion) 28 which is welded to one end of the pedal lever 24 in an orthogonal state is formed by the bushes 27a, 27.
It is rotatably fitted and disposed on the outer periphery of b.

A pedaling force assisting spring 25 is stretched over holes 30 and 31 provided in the pedal bracket 21 and the pedal lever 24, respectively.

When the pedal 32 starts to be depressed, the urging force of the spring 25 acts as a force opposing the depressing force, and after a predetermined rotation of the pedal lever 24 (passing through a dead point indicated by α in FIG. 5). After that, the urging force of the spring 25 acts as an assisting force of the pedaling force.

[0006]

However, in the conventional brake pedal device 20 as described above, a support point (point indicated by point β in FIGS. 4 and 5) of the pedaling force assisting spring 25 is provided on the pedal bracket 21. As a result, the switching point (dead point α) in the direction of the urging force of the spring 25 is set at a predetermined position, and the setting change of the switching point cannot be appropriately performed as needed. There is a point.

Further, as shown in FIG. 4, the spring 25 is inclined between the pedal lever 24 and the pedal lever 24 in a region between the pedal lever 24 and the pedal bracket 21, and Therefore, the urging force of the spring 25 is dispersed in each direction. Therefore, only a part of the urging force of the spring 25 is used as the rotation urging force of the pedal lever 24, and there is a problem that the assisting operation of the pedal 32, that is, the reduction of the pedaling force cannot be effectively performed.

The present invention has been made in order to solve such a problem, and an object of the present invention is to arbitrarily change the setting of a switching point (dead point) of the direction of the urging force of a pedal effort assisting spring. It is an object of the present invention to provide a pedal device which can perform the pedal operation and can effectively reduce the pedal depression force, that is, reduce the pedal depression force.

[0009]

According to the present invention, a support shaft fixed to a pedal bracket, a spacer fitted on the outer periphery of the support shaft, and an outer periphery of the spacer are provided. In a pedal device comprising a pedal lever rotatably mounted and a pedaling force assisting spring for urging the pedal lever to rotate, a stay is integrally connected to the spacer,
The pedal force assisting spring is provided between the stay and the pedal lever.

[0010]

[Operation] After the switching point in the direction of the predetermined biasing force is exceeded by the pedaling force assisting spring installed between the stay and the pedal lever, the pedaling force of the pedal is reduced. Further, by changing the position of the stay provided so as not to be affected by the movement of the pedal lever, the switching point in the direction of the biasing force of the spring is arbitrarily adjusted. By narrowing the interval between the stay and the pedal lever, the spring installed between them is disposed substantially parallel to the members without being inclined with respect to these members, and the distribution of the biasing force of the spring is prevented. .

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a brake pedal device 1 of a motor vehicle. The device 1 is mounted on a dash panel 3 together with a brake master cylinder 2. The above-described brake pedal device 1 includes a pedal bracket 4 fixed to the dash panel 3 as shown in FIG. 1, and bolt members are provided on opposing walls 5 a and 5 b of the pedal bracket 4 as shown in FIG. 2. 6 are inserted and secured with nuts 7. Then, the pair of opposed wall portions 5
A part of the bolt member 6 between a and 5b is fixedly provided on the pedal bracket 4 as a support shaft 8.

On the outer periphery of the support shaft 8 described above,
A cylindrical spacer 9 extending over the entire width between the pair of opposed wall portions 5a and 5b is fitted, and is fixed on the support shaft 8 by a tightening force between the bolt member 6 and the nut 7. The upper end 10a of the stay 10 is welded to the middle portion of the spacer 9 in an orthogonal state, whereby the spacer 9 and the stay 10 are integrally assembled.

Further, of the spacer 9, the stay 1
A pair of left and right cylindrical bushes 11a and 11b are fitted around the outer periphery of a portion between the bush 11 and the one opposing wall 5b. The boss 13 is rotatably fitted. The boss 13 is perpendicularly inserted into the upper end 12a of the pedal lever 12 and welded to the boss 13.
A pedal 14 is attached to the other end (lower end) of the pedal lever 12. Thus, this pedal lever 12
It is supported by the support shaft 8 via the spacer 9 and the bushes 11a and 11b, and is arranged to be rotatable about the support shaft 8. The stay 10 is welded to the spacer 9 fixed between the opposing walls 5a and 5b of the pedal bracket 4, so that the stay 10 is fixedly arranged without being affected by the movement of the pedal lever 12. .

At the lower end 10b of the stay 10 and the intermediate portion 12b of the pedal lever 12, spring engaging pins 15 and 16 are provided upright, respectively. A spring (compression coil spring) 17 is provided. As shown in FIG. 1, when no pedaling force is applied to the pedal 14, the pin 16 of the pedal lever 12 is moved by the reaction force from a brake system (not shown) and the axis of the support shaft 8 and the stay 10.
The pin 15 is arranged at a position deviating from a straight line (dead point or urging force switching point) α connecting to the axis of the pin 15, that is, at a position indicated by a solid line in FIG. Therefore, in this case, the urging force of the spring 17 causes the pedal lever 12 to move around the support shaft 8 by the arrow A in FIG.
It is configured to act as a force for energizing rotation in the direction (return direction).

Next, the function of the above-described brake pedal device 1 will be described as follows. First, pedal 14
When the pedal is depressed in the direction of arrow B in FIG. 1, the pedal lever 12 turns around the support shaft 8 in the direction of arrow B against the reaction force from a brake system (not shown) and the urging force of the pedaling force assisting spring 17. Be moved. Then, when the pedal lever 12 is rotated by a certain angle and passes through a dead point indicated by α in FIG.
Of the pedal lever 12 acts as an operating force in the stepping direction (the direction of the arrow B) of the pedal lever 12, and the pedaling force is reduced by the amount of the urging force.

Thus, a braking system (not shown) is activated in response to the rotation of the pedal lever 12, and a braking force is applied to the wheels. When the depression of the pedal 14 is released, the pedal lever 12 rotates in the direction of arrow A in FIG. 1 around the support shaft 8 to the dead point α against the urging force of the spring 17 due to the reaction force from the brake system. Thereafter, the pedal lever 12 is returned to the position shown by the solid line in FIG. 1 due to the urging force of the spring 17 and the reaction force.

According to the pedal device 1 configured as described above,
One end of the pedaling force assisting spring 17 is hooked on the pin 16 of the pedal lever 12, and the other end is hooked on the pin 15 of the stay 10 integrally attached to the spacer 9, so that the direction of the urging force of the spring 17 is applied. The switching point (dead point α) can be adjusted. That is, by changing the mounting position of the spacer 9 on the support shaft 8 in the rotational direction, the position of the pin 15 to which the spring 17 is engaged can be adjusted, and the position of the dead point α can be changed.

Further, as shown in FIG. 2, the direction in which the spring 25 is provided can be set so as to be substantially parallel to the pedal lever 12, so that all of the urging force of the spring 17 is used for assisting the pedaling force. Can be used as

FIG. 3 shows a brake pedal device 18 according to another embodiment of the present invention. In this embodiment, one end of a stay 10 welded and connected to a spacer 9 is bent.
The bent portion 10 a is selectively inserted into one of a plurality of holes 19 formed in the pedal bracket 4. In FIG. 3, portions having the same functions as those in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted.

The brake pedal device 18 having such a configuration
According to this, by selecting the hole 19 into which the bent portion 10a of the stay 10 is inserted, it is possible to adjust the engagement position of the pin 15 of the stay 10 and thus the pedaling force assisting spring 17 (not shown in FIG. 3). In addition, the stay 10 can be prevented from rotating.

As described above, one embodiment of the present invention has been described.
The present invention is not limited to the embodiments described above, and various changes and modifications can be made based on the technical idea of the present invention. For example, the present invention relates to the brake pedal devices 1, 18
The present invention is not limited to this, and can be applied to a clutch pedal device and the like.

[0023]

As described above, according to the present invention, the pedaling force assisting spring is provided between the stay and the pedal lever integrally connected to the spacer of the support shaft. Thereby, the pedaling force after the pedal lever is depressed by a certain amount can be reduced,
Since it is possible to arbitrarily change the position at which the stay is provided, and hence the position at which one end of the spring is attached, it is possible to arbitrarily adjust a switching point (dead point) in the direction of the urging force of the spring. Moreover, since the spring can be installed substantially parallel to the pedal lever, there is no dispersion of the urging force of the spring, and almost all of the urging force can be used as a pedaling force assisting force (stepping force reducing force). it can. In addition, despite the fact that such a practical function and effect can be achieved, the pedal bracket does not require any change, so there is no need to change the assembling jig. It also has the economic advantage of not having to worry.

[Brief description of the drawings]

FIG. 1 is a side view of a brake pedal device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view of a main part of a brake pedal device according to another embodiment of the present invention.

FIG. 4 is a sectional view of a main part of a conventional brake pedal device.

FIG. 5 is a side view showing the operation of the conventional brake pedal device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 18 Brake pedal device 4 Pedal bracket 8 Support shaft 9 Spacer 10 Stay 11a, 11b Bush 12 Pedal lever 13 Boss 14 Pedal 15, 16 Spring fastening pin 17 Treading force assisting spring (tensile coil spring) 19 hole

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G05G 1 / 14,7 / 04 B60T 7/06

Claims (1)

(57) [Claims] 1. A support shaft fixed to a pedal bracket, a spacer fitted to the outer periphery of the support shaft between both ends of the support shaft, and a rotatably mounted on the outer periphery of the spacer. A pedal lever comprising a pedal lever and a pedaling force assisting spring for rotatingly biasing the pedal lever, wherein a stay is integrally connected to the spacer, and the pedaling force assisting spring is connected to the stay and the pedal lever. A pedal device which is installed between the pedals.