KR19990030545A - Pedal pedal of automobile pedal - Google Patents

Abstract

The present invention relates to a pedal effort reducing apparatus for a pedal including a coil spring having at least three movable parts, wherein the spring force can be distributed by varying the position and operating time of the coil spring movable parts.

Therefore, the pedaling force recoiled at the pedal during the initial operation of the pedal is lowered, and the clutch pedal operation is smooth. In addition, since stress is not concentrated at the end of the coil spring, wear of the bushing provided at the end is reduced.

Description

Pedal pedal of automobile pedal

The present invention relates to a device for reducing the pedaling force of, for example, a clutch pedal of an automobile, and more particularly, to an improvement of a pedal pressurizing means.

In recent years, with the increase in the output of the engine, the repulsive force of the spring inside the clutch is also increased, and the pedal effort required at the time of clutch operation is also greatly increased. Therefore, there is a demand for a pedal that can increase the pedal effort as much as possible when operating the clutch pedal.

6 and 7 show examples of the conventional pedal effort reducing device for increasing the pedal effort. An equalizer bar 102 is pivotally attached to the pair of support brackets 112 and 114 connected to the vehicle body in a direction orthogonal to this, and the pedal arm 100 to the equalizer bar 102. It is supported by this material. Coil springs 104 are installed between the support brackets 112 and 114 in a state capable of providing a torsion. Both ends 116 and 118 of the coil spring 104 are bent at a right angle so that the support brackets 112 and 114 are mounted to the bushings 108 and 110 along the engagement hole. The central portion of the coil spring 104, i.e., the swing end 124, is also bent at a right angle and fitted to the tip of the pedal arm 100 via a bushing 122. Since the coil spring 104 is free to rotate around the pivotally mounted ends, the spring force can be applied to the pedal arm 100.

In the prior art, in order to reduce the stepping force, for example, when the spring constant of the coil spring is increased or the lever arm is lengthened, there is a problem that the stepping force required at the initial step of the stepping increases. In addition, even in the case of dispersing the coil spring force by the two left and right springs, the initial pedaling force is increased to obtain a smooth pedal pedaling effect, it is due to the repeated clutch pedal operation to promote the wear of the bushing.

A method for solving the problem of the conventional pedal effort reducing device is disclosed in Japanese Patent Application Laid-Open No. 3-13779.

Referring to FIG. 8, the apparatus disclosed in the publication includes a first coil part 202 and a second coil part 204, and between the first coil part 202 and the second coil part 204. Coil spring 201 which constitutes the swing end 206 and the first pivot end 208 and the second pivot end 210 respectively at the front end of the first coil part 202 and the second coil part 204. It includes, the swing end 206 is locked to the spring attachment portion 212.

The first pivot stage 208 is located closer to the depression position C of the pedal than the line segment A connecting the rotational center M of the pedal arm 200 and the swinging stage 206 in a state before the pedal is operated. Pivoting the support bracket 214 so that the arm 200 is positioned closer to the return side of the pedal than the line segment A connecting the rotational center M of the pedal arm 200 and the swing end 206 with the arm 200 operated at a predetermined angle or more. Is mounted.

Further, the second pivot stage 210 is located at the return side of the pedal rather than near the line segment A which connects the rotational center M of the pedal arm 200 and the swing stage 206 in the state before the pedal is depressed, or near the line segment. It is pivotally mounted to the support bracket 214 so as to.

However, the apparatus disclosed in the above publication disperses the coil spring force by deforming the shape of the single coil spring, but since the single spring is used, the effort reduction can not be achieved effectively.

Thus, by dispersing the concentration of the coil spring force in the pivotally coupled moving part, it disperses the repulsive force applied to the initial pedal arm, preventing the initial stepping force during operation, enabling a smoother clutch pedal operation, and to the pedal arm The pedal power applied by the pedal is distributed to more moving parts, and the pedal effort reducing device of the pedal that can act as a smooth soft pedal constantly during the period as well as the end of the pedal operation is required.

SUMMARY OF THE INVENTION The main object of the present invention for solving the conventional problems is to provide a pedal effort reducing apparatus for reducing pedal effort during initial operation of a clutch pedal to smooth initial pedal operation.

Another object of the present invention is to distribute the effort applied to the spring to prevent the wear of the bushing provided in the pedal effort reduction device of the pedal.

1 is a schematic diagram of a pedal effort reducing device according to a first embodiment of the present invention having first and second coil springs;

Figure 2 is a side view of the pedal effort reducing device of the pedal shown in Figure 1,

3 is a side view showing a main portion operating state of FIG.

4 is a schematic diagram of a pedal effort reducing device according to a second embodiment of the present invention;

5 is a side view of FIG. 4;

6 is a schematic diagram of a pedal effort reducing device of a conventional pedal;

7 is a side view of FIG. 6;

8 is a schematic side view of another conventional pedal effort reducing device.

<Description of the reference numerals for the main parts of the drawings>

10,50: pedal arm 12, 52: equalizer bar

16, 18, 54, 56: Bracket 20, 22, 62, 64, 66, 68: Spring

24, 58, 60: Lever member 26: Bolt

40, 42, 44, 70, 72, 74, 76, 78: bushing

The present invention has been made to achieve the above object, a plurality of support brackets fixed to the vehicle body; An equalizer bar fixed between the brackets; A pedal arm rotatably connected to the equalizer bar located between the support brackets; A lever member coupled to the equalizer bar end; A main elastic member coupled between the support bracket and the pedal arm; And, an auxiliary elastic member coupled between the support bracket and the lever member; Characterized in that it comprises a.

In addition, the main elastic member has a first engaging end pivotally coupled to the front end of the pedal arm, and a second engaging end pivotally coupled to the support bracket; The auxiliary elastic member is configured to have a third coupling end pivotally coupled to the support bracket, and a fourth coupling end pivotally coupled to the tip of the lever member.

In addition, the first and second coupling ends exist in different positions when viewed from the side of the elastic member, and the third and fourth coupling ends exist in different positions when viewed from the side of the elastic member. The second and third coupling ends may be configured to be in the same position when viewed from the side of the elastic member.

According to another embodiment of the present invention, the present invention comprises: a plurality of support brackets fixed to a vehicle body; An equalizer bar fixed between the brackets; A pedal integrally rotatable with an equalizer bar located between the support brackets; A plurality of lever members coupled to the equalizer bar ends; A plurality of main elastic members coupled between the support bracket and the pedal; And, a plurality of auxiliary elastic members coupled between the support bracket and the lever member; Characterized in that it comprises a.

The plurality of main elastic members may include a first main elastic member and a second main elastic member; The first main elastic member includes a first engaging end pivotally coupled to the pedal arm, and a second engaging end pivotally coupled to the first bracket; The second main elastic member may include a third coupling end pivotally coupled to the pedal arm, and a fourth coupling end pivotally coupled to the second bracket.

The plurality of auxiliary elastic members may include a first auxiliary elastic member and a second auxiliary elastic member: the first elastic member may include a fifth coupling end pivotally coupled to a first bracket, and a first lever member. A sixth coupling end pivotally coupled thereto; The second elastic member may include a seventh coupling end pivotally coupled to the second bracket, and an eighth coupling end pivotally coupled to the second lever member.

In the above, the positions of the first and third coupling ends, the positions of the second, fourth, fifth and seventh coupling ends, and the positions of the sixth and eighth coupling ends are viewed from the side of the elastic member. When the first and third coupling ends, the second, fourth, fifth and seventh coupling end, and the sixth and eighth coupling end are respectively connected It is characterized in that it is configured to exist in different positions when viewed from the side of the spring.

And, each of the elastic members, characterized in that the coil spring is formed with a coupling portion extending in a straight line at both ends, the coupling portion bent at 90 ° at the end of the connection portion.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the pedal effort reducing device of the vehicle pedal according to the present invention will be described in detail.

1 is a schematic view of the pedal effort reducing device of the pedal according to the first embodiment of the present invention having a first and second coil spring, Figure 2 shows a side view of the pedal effort reducing device shown in FIG.

Referring to FIG. 1, there is schematically shown a pedal effort reducing apparatus according to a first embodiment of the present invention including a coil spring composed of a first coil spring 20 and a second coil spring 22. In the illustrated pedal effort reducing device, a pair of support brackets 16 and 18 are fixed to a vehicle body (not shown), and a cylindrical equalizer bar 12 is fixed by a bolt 26 therebetween.

The base of the pedal arm 10 is fixed to the equalizer bar 12 while the base of the lever member 24 is fixed. Thus, the equalizer bar 12 becomes the center of rotation of the pedal arm 10 and the lever member 24. The tip 28 of the pedal arm 10 is cut out to form a spring attachment portion. A first coil spring 20 is provided between the pedal arm 10 and the support bracket 18, and a second coil spring 22 is provided between the support bracket 18 and the lever member 24.

Each coil spring 20, 22 has a connecting portion extending in a straight line at both ends, the connecting end is configured to be bent by 90 degrees to form a coupling end (32, 34) and the coupling end (36, 38), respectively do.

The first coupling end 32, which is one end of the first coil spring 20, is fitted to the bushing 40 provided at the tip 28 of the pedal arm 10 to form the movable portion B, and the second coupling end 34 that is the other end 34. ) Is fitted to the bushing 42 provided on the support bracket 18 to form the swinging portion A. The third coupling end 36, which is one end of the second coil spring 22, is fitted to the bushing 42 of the support bracket 18, and the second coupling end 38, which is the other end, is a lever member 24. It is configured to fit into the bushing 44 provided at the tip of the) to form the movable portion C.

FIG. 2 also shows a side view of the pedal effort reduction device of the pedal arm 10 shown in FIG. 1. The second coupling end 34 of the first coil spring 20 and the third coupling end 36 of the second coil spring 22 are coupled to the same bushing 42 to form coil springs 20 and 22. When viewed in the lateral direction, the position is configured to achieve the same point. However, the coupling ends 32 and 34 of the first coil spring 20 and the coupling ends 36 and 38 of the second coil spring 22 are viewed from the side of the coil springs 20 and 22. At that time, the positions are configured not to achieve the same point, respectively.

In addition, the movable portion B of the front end 28 of the pedal arm 10 is located on the right side of the swinging portion A when viewed from the side of the coil springs 20 and 22, and the movable portion of the front end 28 of the pedal arm 10 is located. B is located to the left of the movable portion C of the lever member 24. As a result, each of the movable portion and the swinging portion is configured to be positioned in the order of A, B, and C from the left side, as shown in FIG. Accordingly, when the pedal arm 10 is operated in the P direction, the movable portion B moves in the P 'direction and compresses the first coil spring 20. When the movable portion B coincides with the swinging portion A (coil At the point of view of the spring, the elastic portion of the first coil spring 20 is rotated in the X direction by its own elastic force. At this time, according to the rotation of the equalizer bar 12, the movable part C connected to the lever member 24 is also rotated to compress the second coil spring 22, which is the point of time when the movable part C coincides with the swinging part A (coil spring). At the point of view of the point of view of the side), the elastic portion of the second coil spring 22 is rotated in the Y direction by its elastic force.

The first coil spring 20 and the second coil spring 22 are made of the same material, and the starting point of each coil spring can be changed according to the characteristics of the pedal, and the position of the movable part B of the pedal is also required. Of course, it can be changed according to.

Hereinafter, the operation of the pedal effort reducing device of the pedal according to the first embodiment of the present invention will be described.

When the pedal arm 10 is pushed in the P direction, since the first coupling end 32 of the first coil spring 20 to which the pedal arm 10 is connected moves in the P 'direction, the first coil spring 20 Torsion is added. When the movable portion B of the first coil spring 20 thus moved is positioned on the same axis as the swinging portion A, the first coil spring 20 is rotated in the X direction by the added elastic force.

As the pedal arm 10 is pushed in the P direction, the lever member 24 also rotates clockwise as seen in FIG. At this time, the coupling end 38 of the second coil spring 22 coupled to the lever member 24 is also moved, whereby the torsion is added to the second coil spring 22 while the movable part C is moved to the swinging part A side. do. When the movable part C of the second coil spring 22 thus moved is positioned on the same axis as the swinging part A, the first coil spring 20 is rotated in the Y direction by the added elastic force.

In other words, as shown in FIG. 3, when the pedal arm 10 is rotated in the P direction, as the end portion 28 is rotated in the P 'direction, the movable portion B of the first coil spring 20 is pedaled. It rotates with the edge part 28 of the arm 10 crossing the line segments 1, 2, and 3 in order.

At this time, in the section a, which is from the initial driving of the pedal arm 10 (line segment 1) to the line segment 2 where the pivoting portion A, the movable portion B, and the pivot center point O of the pedal arm 10 form a straight line, As the force Fa is directed downward, the effort of the pedal is increased. Then, the force Fb at the movable portion B is directed upward in the section b that is moved toward the line segment 3 from the line segment 2 where the pivoting portion A, the movable portion B, and the pivot center point O of the lever form a straight line. This will reduce the pedal's effort. That is, according to the position of the pivot center point O of the lever, the size of a region that increases the pedal effort is determined.

Accordingly, by appropriately setting the position of the center of rotation (O) of the pedal arm 10, the first coil spring 20 reaches the area b beyond the boundary of line segment 2 as soon as the pedal is pressed, It is possible to solve the initial problem of excessive effort occurring in the existing zone a. The second coil spring 22 is also configured to quickly pass the excess effort region generated at the initial driving of the pedal arm 10 by the same principle as the first coil spring 20. In FIG. 3, the force Fo at the point where the pivoting point O of the swinging portion A, the movable portion B, and the pedal arm 10 forms a straight line is a reference step force according to the inherent elastic force of the first coil spring 20. It is shown.

Accordingly, at the time of the initial pedal operation, only the engaging end 38 of the first coil spring 20 and the engaging end 38 of the second coil spring 22, that is, the movable part B and the movable part C, move. The torsion and torque applied to the coil springs 20 and 22 are considerably weaker than conventional mechanisms. Therefore, it is possible to prevent a large load from concentrating on the bushings 40, 42 and 44 provided at the pivot coupling portion of the coil springs 20 and 22 during the initial pedal operation. In addition, since the repulsive force acting on the pedal arm 10 is weakened during the initial pedal operation, the pedal operation is smoothed, and the pedal force applied by the pedal arm 10 is distributed to more movable parts. Pedal operation is smooth even in entrance examination.

4 is a schematic view of the pedal effort reducing device of the pedal according to the second embodiment of the present invention, Figure 5 is a side view of Figure 4, by installing a pair of coil springs of the embodiment symmetrically on both sides of the pedal arm, Another embodiment is shown to further reduce the pedal effort at the time of depression. That is, the device in this embodiment is fixed to the pedal arm 50 located at the center of the equalizer bar 52, the equalizer bar 52 at regular intervals left and right about the pedal arm 50, and the vehicle body (not shown). The first and second brackets (54, 56) fixed to the) and the first and second lever members (58, 60) fixed to both ends of the equalizer bar (52).

Further, in the device of this embodiment, first and second main springs 62, 64 are pivotally coupled between the first and second brackets 54, 56 around the pedal arm 50, and The first and second auxiliary springs 66, 68 are configured to pivotally engage between the respective lever members 58, 60 and the brackets 54, 56. At this time, each of the spring (62, 64, 66, 68), each having a connecting portion extending in a straight line, the end of the connecting portion is composed of a coil spring coupled by each coupling end bent at 90 ° .

The first and second main springs 62, 64 pivotally coupled to the bushings 78 provided at the front end 82 of the pedal arm 50 are movable parts C at the pivot engagement portion with the pedal arm 50. Has In addition, the first auxiliary spring 66 has a movable portion B at one end pivotally coupled to the first lever member 58, and a swinging portion at the other end pivotally coupled to the first bracket 54. Has A. The second auxiliary spring 68 is also coupled to the second lever member 60 and the second bracket 56 in the same manner as the first auxiliary spring 66 so as to have a movable part B and a swinging part A, respectively. Each movable portion B and each swinging portion A of the first and second auxiliary springs 66 are mounted to achieve the same point when viewed from the lateral direction of the spring. Reference numerals 70, 72, 74 and 76 denote bushings.

In the above-described configuration, the initial movable portion becomes C when the pedal is actuated. The initial torsion applied to the movable portion C is absorbed through the main springs 62 and 64 on both sides. When the movable portion C rotates to reach the position of the swinging portion A, and the movable portions B at both ends of the lever members 58 and 60 reach the position of the swinging portion A, the first and second auxiliary springs 66 and 68 rotate. As a result, the initial pedal operation force is distributed to the coil springs 62, 64, 66, and 68 by the same action as the first embodiment. Accordingly, the pedaling force transmitted to the bushing 78 provided in the pivot coupling portion is weaker than the initial pedaling force, and the pedaling force recoiled at the initial depression is weakened, so that the depression operation can be made very smooth.

As can be seen by the above embodiment, by the pedal effort reducing device of the present invention, by dispersing the concentration of the coil spring force in the pivotally coupled movable portion, the repulsive force applied to the initial pedal arm is dispersed By preventing excessive initial pedal effort during operation, not only enables smoother clutch pedal operation, but also the pedal force applied by the pedal arm is distributed to more movable parts, so that the clutch can be smoothly applied during the pedal operation, even during the end period. This has the effect of operating the pedals.

The above described embodiments are merely one of various embodiments, and the present invention is not limited thereto, and those skilled in the art can appreciate that various changes or modifications can be made within the scope of the appended claims.

Claims (14)

A plurality of support brackets fixed to the vehicle body; An equalizer bar fixed between the brackets; A pedal arm rotatably connected to the equalizer bar located between the support brackets; A lever member coupled to the equalizer bar end; A main elastic member coupled between the support bracket and the pedal arm; And, An auxiliary elastic member coupled between the support bracket and the lever member; Pedal effort reducing device, characterized in that it comprises a. The method of claim 1, wherein the main elastic member has a first coupling end pivotally coupled to the front end of the pedal arm, and a second coupling end pivotally coupled to the support bracket; And the auxiliary elastic member has a third coupling end pivotally coupled to the support bracket, and a fourth coupling end pivotally coupled to the front end of the lever member. 3. The method of claim 2, wherein the first and second coupling ends are respectively located at different positions when viewed from the side of the elastic member, and the third and fourth coupling ends are respectively different from each other when viewed from the side of the elastic member. Is present in a different position, the second and third coupling end of the pedal effort reducing device, characterized in that configured to be in the same position when viewed from the side of the elastic member. 4. The pedal pedal effort reducing apparatus according to claim 2 or 3, wherein bushings are provided at the engaging portions of the first to fourth engaging ends, respectively. The pedal effort reducing device of claim 1, wherein the main elastic member and the auxiliary elastic member are coil springs. 6. The pedal pedal of claim 5, wherein the coil spring has a connecting portion extending in a straight line at both ends, and a coupling portion bent at 90 ° is formed at the end of the connecting portion. A plurality of support brackets fixed to the vehicle body; An equalizer bar fixed between the brackets; A pedal integrally rotatable with an equalizer bar located between the support brackets; A plurality of lever members coupled to the equalizer bar ends; A plurality of main elastic members coupled between the support bracket and the pedal; And, A plurality of auxiliary elastic members coupled between the support bracket and the lever member; Pedal effort reducing device, characterized in that it comprises a. 8. The method of claim 7, wherein the plurality of main elastic members comprise: a first main elastic member and a second main elastic member; The first main elastic member includes a first engaging end pivotally coupled to the pedal arm, and a second engaging end pivotally coupled to the first bracket; And the second main elastic member has a third engaging end pivotally coupled to the pedal arm, and a fourth engaging end pivotally coupled to the second bracket. The method of claim 7, wherein the plurality of auxiliary elastic members, the first auxiliary elastic member and the second auxiliary elastic member comprises: The first elastic member includes a fifth coupling end pivotally coupled to the first bracket, and a sixth coupling end pivotally coupled to the first lever member; And the second elastic member has a seventh coupling end pivotally coupled to the second bracket, and an eighth coupling end pivotally coupled to the second lever member. The method of claim 8 or 9, wherein the position of the first and third coupling end, the position of the second, fourth, fifth and seventh coupling end, and the sixth and eighth coupling end Pedal pedal relieving device, characterized in that the position forms a point each when viewed from the side of the elastic member. The spring of claim 10, wherein a line connecting the first and third coupling ends, the second, fourth, fifth and seventh coupling ends, and the sixth and eighth coupling ends, respectively, is provided at the side of the spring. Pedal effort reducing device, characterized in that present in different positions. 10. The pedal effort reducing device of claim 8 or 9, wherein bushings are respectively provided at the engaging portions of the respective engaging ends. 8. The pedal effort reducing device of claim 7, wherein the main elastic member and the auxiliary elastic member are coil springs. 15. The pedal pedal of claim 13, wherein the coil spring has a connecting portion extending in a straight line at both ends, and a coupling portion bent at an angle of 90 degrees is formed at the end of the connecting portion.