CN201065114Y - Foot operated brake device for parking vehicle - Google Patents

Abstract

A foot-operated parking brake device, which includes a bracket, a pedal, a ratchet piece, a pawl piece and an elastic piece, the elastic piece has a first end and a second end, and the first end is fixed on the ratchet On the claw piece; Wherein, the device also includes a moving track groove, a first reset baffle and a pusher, the moving track groove is arranged on the bracket or the pedal, and the moving track groove has a first moving end and a second moving end , the second end can slide in the groove of the moving track. When the second end is located at the first moving end, the connecting line between the first end and the second end of the elastic member is located at one side of the first rotating shaft. When the second end is located at During the second movement end, the connecting line between the first end and the second end of the elastic member is located on the other side of the first rotating shaft; The second end of the elastic member contacts, and when the pedal is released again, the first reset baffle contacts the second end of the elastic member. The device has the advantages of good rigidity and long service life.

Description

A foot-operated parking brake device

technical field

The utility model relates to a parking brake device, in particular to a pedal type parking brake device.

Background technique

US6508341 discloses a foot-operated parking brake device. As shown in FIG. 1, the ratchet part 3 is installed on the pedal 2, the ratchet part 3 has a ratchet 6, the ratchet part 4 is installed on the bracket 1, and the ratchet part 4 has a pawl 7, so The torsion spring 5 has a first fixed end 13 and a second fixed end 14, the first fixed end 13 is fixed on the bracket 1, the second fixed end 14 is held on the ratchet member 4, and the ratchet member 4 is provided with a waist-shaped hole 8, and the first rotating shaft 20 is arranged in the waist-shaped hole 8, and the first rotating shaft 20 can slide in the waist-shaped hole 8, so that the ratchet member 4 has a first movement position and In the second movement position, when the ratchet member 4 is in the first movement position, the second fixed end 14 is located on one side of the line connecting the first fixed end 13 and the first rotating shaft 20, at this moment, the elastic force of the torsion spring 5 makes The ratchet 7 has a tendency to move toward the ratchet 6. When the ratchet member 4 is in the second moving position, the second fixed end 14 is located on the other side of the line connecting the first fixed end 13 and the first rotating shaft 20. At this time , the elastic force of the torsion spring 5 makes the ratchet 7 have a tendency to move away from the ratchet 6 . It can be seen from the above description that the waist-shaped hole 8 provides the first movement position and the second movement position of the ratchet member 4, thereby changing the direction of action of the elastic force of the torsion spring 5, so that the ratchet 7 has a tendency to move toward the ratchet 6 Or away from the tendency of the ratchet 6 to move, the pawl 7 is engaged or separated from the ratchet 6, thereby completing the braking and reset of the foot-operated parking brake device. Since the ratchet part 4 is a moving part, the setting of the waist-shaped hole 8 on the ratchet part 4 will reduce the rigidity and lifespan of the ratchet part 4, thereby reducing the rigidity and lifespan of the foot-operated parking brake device.

Utility model content

The purpose of the utility model is to provide a pedal type parking brake device with high rigidity.

The utility model provides a foot-operated parking brake device, which comprises a bracket 1, a pedal 2, a ratchet piece 3, a pawl piece 4 and an elastic piece 10, and the pedal 2 is rotatably mounted on the bracket 1 Above, the ratchet part 3 is fixed on the pedal 2, the ratchet part 3 has a ratchet 6, the ratchet part 4 is rotatably mounted on the bracket 1 through the first rotating shaft 20, the ratchet part 4 has a pawl 7 and an extension arm 22, the pawl 7 and the extension arm 22 are respectively located on both sides of the first rotating shaft 20, the elastic member 10 has a first end 15 and a second end 16, the first end 15 is fixed on the extension arm 22; wherein, the device also includes a moving track groove 11, a first reset baffle plate 12 and a pusher 23, the moving track groove 11 is arranged on the support 1, and the moving track groove 11 has a first A moving end 17 and a second moving end 18, the second end 16 of the elastic member 10 can slide in the moving track groove 11, when the second end 16 is located at the first moving end 17, the first end of the elastic member 10 15 and the second end 16 on one side of the first rotating shaft 20, when the second end 16 is located at the second moving end 18, the line connecting the first end 15 and the second end 16 of the elastic member 10 is located at the first The other side of the rotating shaft 20; the pusher 23 is connected with the extension arm 22 and is arranged on one side of the first moving end 17 of the moving track groove 11, and the first reset baffle 12 is installed on the pedal 2 and arranged on the On the side of the second moving end 18 of the moving track groove 11, during the parking brake process, when the pedal 2 is loosened for the first time, the pusher 23 is in contact with the second end 16 of the elastic member 10, and when the pedal 2 is loosened again When pedaling 2 , the first reset baffle 12 is in contact with the second end 16 of the elastic member 10 .

The utility model also provides a foot-operated parking brake device, which includes a bracket 1, a pedal 2, a ratchet piece 3, a pawl piece 4 and an elastic piece 10, and the pedal 2 is rotatably mounted on the bracket 1, the ratchet member 4 is rotatably mounted on the pedal 2 through the first rotating shaft 20, the ratchet member 4 has a ratchet 7 and an extension arm 22, and the ratchet 7 and the extension arm 22 are respectively located at the second On both sides of a rotating shaft 20, the ratchet member 3 is fixed on the bracket 1, the ratchet member 3 has a ratchet 6, the elastic member 10 has a first end 15 and a second end 16, the first The end 15 is fixed on the extension arm 22; wherein, the device also includes a moving track groove 11, a first reset baffle plate 12 and a pusher 23, and the moving track groove 11 is arranged on the pedal 2, and the moving track groove 11 has The first moving end 17 and the second moving end 18, the second end 16 of the elastic member 10 can slide in the moving track groove 11, when the second end 16 is located at the first moving end 17, the first end of the elastic member 10 The line connecting the first end 15 and the second end 16 is located on one side of the first rotating shaft 20. When the second end 16 is located at the second moving end 18, the line connecting the first end 15 and the second end 16 of the elastic member 10 is located at the second end 18. The other side of a rotating shaft 20; the pusher 23 is connected with the extension arm 22 and is arranged on one side of the first moving end 17 of the moving track groove 11, and the first reset baffle 12 is installed on the bracket 1 and set On the side of the second moving end 18 of the moving track groove 11, during the parking brake process, when the pedal 2 is loosened for the first time, the pushing member 23 is in contact with the second end 16 of the elastic member 10. When the pedal 2 is loosened, the first reset baffle 12 is in contact with the second end 16 of the elastic member 10 .

Because the foot-operated parking brake device provided by the utility model cancels the waist-shaped hole in the ratchet part, by setting the moving track groove on the bracket or the pedal, one end of the elastic part moves in the moving track groove, through the The position of the end in the groove of the moving track changes the direction of action of the elastic force of the elastic member on the pawl, so that the pawl and the ratchet engage or disengage, thereby completing the braking and reset of the foot-operated parking brake device . Therefore, the foot-operated parking brake device provided by the utility model improves the rigidity and life of the ratchet member, and further improves the rigidity and life of the entire foot-operated parking brake device.

Description of drawings

Fig. 1 is a structural schematic diagram of a traditional foot-operated parking brake device;

Fig. 2 is a schematic structural view of the foot-operated parking brake device of the first embodiment provided by the utility model;

Figure 3 is an enlarged view of A in Figure 2;

Fig. 4 is a schematic diagram of the working state of the foot-operated parking brake device of the first embodiment provided by the utility model;

Fig. 5 is a schematic diagram of the working state of the foot-operated parking brake device of the first embodiment provided by the utility model;

Fig. 6 is a schematic diagram of the working state of the foot-operated parking brake device of the first embodiment provided by the utility model;

Fig. 7 is a schematic diagram of the working state of the foot-operated parking brake device of the first embodiment provided by the utility model;

Fig. 8 is a schematic structural view of a foot-operated parking brake device according to a second embodiment of the present invention;

Fig. 9 is an enlarged view at C in Fig. 8;

Fig. 10 is a schematic structural view of a foot-operated parking brake device according to a second embodiment of the present invention;

Fig. 11 is a schematic diagram of the working state of the foot-operated parking brake device according to the second embodiment of the present invention;

Fig. 12 is a schematic diagram of the working state of the foot-operated parking brake device according to the second embodiment of the present invention;

Fig. 13 is a schematic diagram of the working state of the foot-operated parking brake device according to the second embodiment of the present invention;

Fig. 14 is a schematic diagram of the working state of the foot-operated parking brake device according to the second embodiment of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 2 and Figure 3, the foot-operated parking brake device according to the first embodiment of the present utility model includes a bracket 1, a pedal 2, a ratchet member 3, a pawl member 4 and an elastic member 10. The pedal 2 is rotatably mounted on the bracket 1, the ratchet part 3 is fixed on the pedal 2, the ratchet part 3 has a ratchet 6, and the ratchet part 4 is rotatably mounted on the On the bracket 1, the ratchet member 4 has a ratchet 7 and an extension arm 22, the ratchet 7 and the extension arm 22 are respectively located on both sides of the first rotating shaft 20, and the elastic member 10 has a first end 15 and a second Two ends 16, the first end 15 is fixed on the extension arm 22; wherein, the device also includes a moving track groove 11, a first reset baffle plate 12 and a pusher 23, and the moving track groove 11 is arranged on the bracket 1 , the moving track groove 11 has a first moving end 17 and a second moving end 18, the second end 16 of the elastic member 10 can slide in the moving track groove 11, when the second end 16 is positioned at the first moving end 17 , the connecting line between the first end 15 and the second end 16 of the elastic member 10 is located on one side of the first rotating shaft 20, and when the second end 16 is located at the second moving end 18, the first end 15 of the elastic member 10 and the second The connecting line of the two ends 16 is located on the other side of the first rotating shaft 20; the pusher 23 is connected with the extension arm 22 and is arranged on one side of the first moving end 17 of the moving track groove 11, and the first reset baffle 12 is installed on the pedal 2 and is arranged on the side of the second moving end 18 of the moving track groove 11. During the parking braking process, when the pedal 2 is loosened for the first time, the pushing member 23 and the elastic member 10 The second end 16 is in contact, and when the pedal 2 is released again, the first reset baffle 12 is in contact with the second end 16 of the elastic member 10 .

The shape, size and position of the moving track groove 11 are not particularly limited, as the moving track groove 11 can be a straight line groove, a broken line groove or an arc groove, in order to make the second end 16 of the elastic member 10 in the moving track groove 11 Stable movement ensures the realization of two moving positions of the second end 16. Preferably, the moving track groove 11 is a broken line groove or an arc groove. The size and position of the moving track groove 11 can be set according to specific conditions, as long as the elastic force of the elastic member 10 can change the action direction of the ratchet member 4 . As shown in FIGS. 2 , 3 and 4 , when the second end 16 of the elastic member 10 is located at the first moving end 17 , the line connecting the first end 15 and the second end 16 of the elastic member 10 is located at the first rotating shaft 20 At this time, the elastic member 10 makes the ratchet 7 have a tendency to move towards the ratchet 6; as shown in Figure 3, Figure 5 and Figure 6, when the second end 16 of the elastic member 10 is located at the second moving end 18 , the connecting line between the first end 15 and the second end 16 of the elastic member 10 is located on the other side of the first rotating shaft 20 , and at this moment, the elastic member 10 makes the ratchet 7 have a tendency to move away from the ratchet 6 .

In order to make the second end 16 of the elastic member 10 move stably in the moving track groove 11, ensure that two moving positions of the second end 16 are realized, as shown in FIG. 3 , preferably, the moving track groove 11 also includes an inflection point 19. The inflection point 19 is located between the first moving end 17 and the second moving end 18. When the second end 16 of the elastic member 10 is located at the inflection point 19, the elastic force of the elastic member 10 is smaller than that of the second end 16 of the elastic member 10 when the second end 16 of the elastic member 10 is in motion. The elastic force of the elastic member 10 is used for other positions of the track groove 11. As shown in Figure 3, when the second end 16 of the elastic member 10 is located at the inflection point 19, the elastic force of the elastic member 10 is the smallest, so when the second end 16 crosses the inflection point 19, the second end 16 can move under its own elastic force To the first moving end 17 or the second moving end 18.

The pusher 23 can be connected to the extension arm 22 through various fasteners, such as screws or bolts, or can be connected to the extension arm 22 through a lever mechanism, or has an integrated structure with the extension arm 22. In order to simplify the structure, as shown in Figure 3 As shown, preferably, the pusher 23 and the extension arm 22 are integrally structured. The pushing member 23 is used to push the second end 16 from the first moving end 17 to the second moving end 18 when the pedal 2 is released for the first time, so as to change the acting direction of the elastic force of the elastic member 10 . There is no special requirement on the shape and size of the pusher 23, as long as its function can be realized. For example, the pusher 23 can be block, plate, spherical or other irregular shapes.

The first reset baffle 12 is used to push the second end 16 of the elastic member 10 from the second moving end 18 to the first moving end 17 after the parking brake is completed, so that the second end 16 of the elastic member 10 reset. There is no special requirement on the shape and size of the first reset baffle 12, as long as the second end 16 can be reset, as the first reset baffle 12 can be block, plate, spherical or other irregular shapes.

As shown in FIG. 2 , the pedal 2 is rotatably mounted on the bracket 1 through a second rotating shaft 21 . During parking braking, the pedal 2 can rotate about the second rotational axis 21 . The pedal 2 and the second rotating shaft 21 are well known in the art and will not be repeated here.

The ratchet member 3 is well known in the art, and the ratchet member 3 is generally sector-shaped. The ratchet member 3 can be fixed on the pedal 2 by various methods known in the art, such as bolt connection, screw connection or welding. The ratchet member 3 has a ratchet 6 for engagement with a pawl 7 during parking braking.

The pawl member 4 is well known in the art. The pawl member 4 can swing around the first rotating shaft 20 . The pawl 7 of the pawl member 4 is intended to engage with the ratchet 6 during parking braking. The ratchet member 4 and the first rotating shaft 20 are well known in the art and will not be repeated here.

The elastic member 10 can be various elastic components known in the art, such as a torsion spring or an elastic sheet. The first end 15 of the elastic member 10 is fixed on the extension arm 22, and the second end 16 can slide in the moving track groove 11, so that the direction of the elastic force of the elastic member 10 on the ratchet member 4 is changed, so that the ratchet 7 has a tendency to move towards or away from the ratchet 6 .

The foot-operated parking brake device also includes a common parking cable 24 , a limit block 25 and a second reset baffle 26 . The parking cable 24 is connected with the pedal 2 or the ratchet member 3 . The limiting block 25 is fixed on the bracket 1 for limiting the movement of the ratchet member 4 . The second reset baffle 26 is fixed on the pedal 2 and can move together with the pedal 2 to reset the pawl member 4 after the parking brake is completed.

Other structures of the foot-operated parking brake device provided by the utility model are the structures of the traditional foot-operated parking brake device, which will not be repeated here.

The following describes the working process of the foot-operated parking brake device according to the first embodiment of the present utility model.

As shown in Figure 2 and Figure 3, when the device is not in action, the ratchet 6 and the pawl 7 are in a separated state, the second end 16 is located at the first moving end 17, and the first end 15 and the second end of the elastic member 10 The connecting line of 16 is located on one side of the first rotating shaft 20, and at this time, the force of the elastic member 10 makes the pawl member 4 have a tendency to move clockwise. Since the ratchet part 4 is blocked by the ratchet part 3, the ratchet part 4 cannot move.

When the pedal 2 needs to be braked, the pedal 2 rotates clockwise around the second shaft 21 , and at the same time drives the ratchet member 3 to rotate clockwise around the second shaft 21 . The second end 16 is still located at the first moving end 17, and the connecting line between the first end 15 and the second end 16 of the elastic member 10 is located at one side of the first rotating shaft 20, and the active force of the elastic member 10 makes the pawl member 4 rotate around the second end. A rotating shaft 20 moves clockwise, and the ratchet 7 slides over the ratchet 6 on the ratchet member 3 . Depress the pedal 2 to the parking position, make the pawl 7 and the ratchet 6 engage together, and obtain the motion state as shown in FIG. 4 .

When the pedal 2 is released, the ratchet member 3 rotates counterclockwise around the second rotating shaft 21 under the pulling force of the parking cable 24. At this time, since the pawl 7 and the ratchet 6 are engaged together, the ratchet member 4 is driven to rotate at the same time. The first rotating shaft 20 rotates clockwise, and the pawl 7 is further engaged with the ratchet 6 . The pusher 23 integrally structured with the ratchet member 4 pushes the second end 16 to move in the moving track groove 11, so that the second end 16 passes through the inflection point 19, and then the second end 16 moves to the second end 16 under the elastic force of the elastic member 10. Two moving ends 18 obtain the motion state as shown in Figure 5, arrow B among the figure represents the pulling force action direction of parking cable 24, at this moment, the connecting line of first end 15 and second end 16 of elastic member 10 is positioned at On the other side of the first rotating shaft 20 , the force of the elastic member 10 causes the pawl member 4 to move counterclockwise around the first rotating shaft 20 . Since the ratchet 7 is blocked by the ratchet 6, the ratchet member 4 cannot move.

Want to release the brake, still need to step on pedal 2. When the pedal 2 is stepped on again, the pedal 2 drives the ratchet member 3 to move clockwise around the second rotating shaft 21, so that the ratchet 6 and the pawl 7 are disengaged, and the ratchet member 4 rotates around the first rotating shaft under the action of the elastic member 10. 20 moves counterclockwise and is blocked by the limit block 25 to obtain the motion state as shown in FIG. 6 .

When the pedal 2 is loosened again, as shown in Figure 7, the pedal 2 resets under the pulling force of the parking cable 24, and the first reset baffle 12 and the second reset baffle 26 go around the second rotating shaft 21 counterclockwise along with the pedal 2. sports. The first return baffle plate 12 pushes the second end 16 of the elastic member 10 to move in the moving track groove 11, so that the second end 16 passes through the inflection point 19, and then the second end 16 moves to the first movement under the elastic force of the elastic member 10 End 17, so that the second end 16 of the elastic member 10 returns. The second reset baffle 26 pushes the ratchet 7 to reset the ratchet member 4, and returns to the state shown in FIG. 2 at this time.

As shown in Fig. 8, Fig. 9 and Fig. 10, the foot-operated parking brake device according to the second embodiment of the utility model includes a bracket 1, a pedal 2, a ratchet part 3, a pawl part 4 and an elastic part 10 , the pedal 2 is rotatably mounted on the bracket 1, the pawl member 4 is rotatably mounted on the pedal 2 through the first rotating shaft 20, the pawl member 4 has a pawl 7 and an extension arm 22, so The ratchet 7 and the extension arm 22 are respectively located on both sides of the first rotating shaft 20, the ratchet member 3 is fixed on the bracket 1, the ratchet member 3 has a ratchet 6, and the elastic member 10 has a first end 15 and the second end 16, the first end 15 is fixed on the extension arm 22; wherein, the device also includes a moving track groove 11, a first reset baffle plate 12 and a pusher 23, and the moving track groove 11 is arranged on On the pedal 2, the moving track groove 11 has a first moving end 17 and a second moving end 18, and the second end 16 of the elastic member 10 can slide in the moving track groove 11, when the second end 16 is located at the first When moving the end 17, the connecting line between the first end 15 and the second end 16 of the elastic member 10 is located on one side of the first rotating shaft 20. When the second end 16 is located at the second moving end 18, the first end of the elastic member 10 15 and the second end 16 are located on the other side of the first rotating shaft 20; the pusher 23 is connected with the extension arm 22 and is arranged on one side of the first moving end 17 of the moving track groove 11, the first The reset baffle 12 is installed on the support 1 and is arranged on one side of the second moving end 18 of the moving track groove 11. During the parking braking process, when the pedal 2 is loosened for the first time, the pushing member 23 and the elastic The second end 16 of the elastic member 10 is in contact with the second end 16 of the elastic member 10 . When the pedal 2 is released again, the first reset baffle 12 is in contact with the second end 16 of the elastic member 10 .

The shape, size and position of the moving track groove 11 are not particularly limited, as the moving track groove 11 can be a straight line groove, a broken line groove or an arc groove, in order to make the second end 16 of the elastic member 10 in the moving track groove 11 Stable movement ensures the realization of two moving positions of the second end 16. Preferably, the moving track groove 11 is a broken line groove or an arc groove. The size and position of the moving track groove 11 can be set according to specific conditions, as long as the elastic force of the elastic member 10 can change the action direction of the ratchet member 4 . As shown in FIGS. 8 , 9 and 11 , when the second end 16 of the elastic member 10 is located at the first moving end 17 , the line connecting the first end 15 and the second end 16 of the elastic member 10 is located at the first rotating shaft 20 At this time, the elastic member 10 makes the pawl 7 have a tendency to move towards the ratchet 6; as shown in Figure 9, Figure 12 and Figure 13, when the second end 16 of the elastic member 10 is located at the second moving end 18 , the connecting line between the first end 15 and the second end 16 of the elastic member 10 is located on the other side of the first rotating shaft 20 , and at this moment, the elastic member 10 makes the ratchet 7 have a tendency to move away from the ratchet 6 .

In order to make the second end 16 of the elastic member 10 move stably in the moving track groove 11, ensure that two moving positions of the second end 16 are realized, as shown in FIG. 9 , preferably, the moving track groove 11 also includes an inflection point 19. The inflection point 19 is located between the first moving end 17 and the second moving end 18. When the second end 16 of the elastic member 10 is located at the inflection point 19, the elastic force of the elastic member 10 is smaller than that of the second end 16 of the elastic member 10 when the second end 16 of the elastic member 10 is in motion. The elastic force of the elastic member 10 is used for other positions of the track groove 11. As shown in Figure 9, when the second end 16 of the elastic member 10 is located at the inflection point 19, the elastic force of the elastic member 10 is the smallest, so when the second end 16 crosses the inflection point 19, the second end 16 can move under its own elastic force To the first moving end 17 or the second moving end 18.

The pusher 23 can be connected to the extension arm 22 through various fasteners, such as screws or bolts, or can be connected to the extension arm 22 through a lever mechanism, or has an integrated structure with the extension arm 22. In order to simplify the structure, as shown in Figure 9 As shown, preferably, the pusher 23 and the extension arm 22 are integrally structured. The pushing member 23 is used to push the second end 16 from the first moving end 17 to the second moving end 18 when the pedal 2 is released for the first time, so as to change the acting direction of the elastic force of the elastic member 10 . There is no special requirement on the shape and size of the pusher 23, as long as its function can be realized. For example, the pusher 23 can be block, plate, spherical or other irregular shapes.

The first reset baffle 12 is used to push the second end 16 of the elastic member 10 from the second moving end 18 to the first moving end 17 after the parking brake is completed, so that the second end 16 of the elastic member 10 reset. There is no special requirement on the shape and size of the first reset baffle 12, as long as the second end 16 can be reset, as the first reset baffle 12 can be block, plate, spherical or other irregular shapes.

As shown in FIG. 8 , the pedal 2 is rotatably mounted on the bracket 1 through the second rotating shaft 21 . During parking braking, the pedal 2 can rotate about the second rotational axis 21 . The pedal 2 and the second rotating shaft 21 are well known in the art and will not be repeated here.

The ratchet member 3 is well known in the art, and the ratchet member 3 is generally sector-shaped. The ratchet member 3 can be fixed on the bracket 1 by various methods known in the art, such as bolt connection, screw connection or welding. The ratchet member 3 has a ratchet 6 for engagement with a pawl 7 during parking braking.

The pawl piece 4 can be directly installed on the pedal 2 , or the pawl piece 4 can be installed through a mounting plate fixed on the pedal 2 . As shown in Figures 8 and 10, the pedal 2 is fixed with a mounting plate 9, and the ratchet member 4 is rotatably mounted on the mounting plate 9 through the first rotating shaft 20. At this time, the moving track groove 11 is also correspondingly arranged on the mounting plate 9. Mounting plate 9. During parking braking, the pawl member 4 moves together with the pedal 2 or the mounting plate 9 fixed on the pedal 2 .

The elastic member 10 can be various elastic components known in the art, such as a torsion spring or an elastic sheet. The first end 15 of the elastic member 10 is fixed on the extension arm 22, and the second end 16 can slide in the moving track groove 11, so that the direction of the elastic force of the elastic member 10 on the ratchet member 4 is changed, so that the ratchet 7 has a tendency to move towards or away from the ratchet 6 .

The foot-operated parking brake device also includes a common parking cable 24 , a limit block 25 and a second reset baffle 26 . The parking cable 24 is connected with the pedal 2 or the mounting plate 9 . The limiting block 25 is fixed on the pedal 2 or the mounting plate 9 for limiting the movement of the ratchet member 4 . As shown in FIG. 8 , when the pawl member 4 is installed on the mounting plate 9 , the limit block 25 is correspondingly fixed on the mounting plate 9 , and the parking cable 24 can be connected with the pedal 2 or the mounting plate 9 . The second reset baffle 26 is fixed on the bracket 1 and is used to reset the pawl member 4 after the parking brake is completed.

Other structures of the foot-operated parking brake device provided by the utility model are the structures of the traditional foot-operated parking brake device, which will not be repeated here.

The following describes the working process of the foot-operated parking brake device according to the second embodiment of the present invention.

As shown in Figure 8 and Figure 9, when the device is not in action, the ratchet 6 and the pawl 7 are in a separated state, the second end 16 is located at the first moving end 17, and the first end 15 and the second end of the elastic member 10 are The connecting line of 16 is located on one side of the first rotating shaft 20 . At this time, the force of the elastic member 10 makes the ratchet member 4 tend to move counterclockwise around the first rotating shaft 20 . Since the ratchet part 4 is blocked by the ratchet part 3, the ratchet part 4 cannot move.

When the pedal 2 needs to be braked, the pedal 2 rotates clockwise around the second rotating shaft 21, and at the same time drives the mounting plate 9 fixed on the pedal 2 to rotate clockwise around the second rotating shaft 21, and the mounting plate 9 drives and is installed on the mounting plate The pawl member 4 on 9 rotates clockwise around the second rotating shaft 21. The second end 16 is still located at the first moving end 17, and the connecting line between the first end 15 and the second end 16 of the elastic member 10 is located at one side of the first rotating shaft 20, and the active force of the elastic member 10 makes the pawl member 4 rotate around the second end. A rotating shaft 20 moves counterclockwise, and the ratchet 7 slides over the ratchet 6 on the ratchet member 3 . Depress the pedal 2 to the parking position, make the pawl 7 and the ratchet 6 engage together, and obtain the motion state as shown in FIG. 11 .

When the pedal 2 is loosened, the pawl part 4 and the mounting plate 9 rotate counterclockwise around the second rotating shaft 21 under the tension of the parking cable 24, and the pawl part 4 rotates counterclockwise around the first rotating shaft 20 at the same time, and the pawl 7 Further engagement with the ratchet 6. The pusher 23 integrally structured with the ratchet member 4 pushes the second end 16 to move in the moving track groove 11, so that the second end 16 passes through the inflection point 19, and then the second end 16 moves to the second end 16 under the elastic force of the elastic member 10. The second moving end 18 obtains the moving state as shown in FIG. 12 , and the arrow D in the figure indicates the direction of the pulling force of the parking cable 24 . At this time, the connecting line between the first end 15 and the second end 16 of the elastic member 10 is located on the other side of the first rotating shaft 20, and the active force of the elastic member 10 makes the pawl member 4 move clockwise around the first rotating shaft 20. trend. Since the ratchet 7 is blocked by the ratchet 6, the ratchet member 4 cannot move.

Want to release the brake, still need to step on pedal 2. When the pedal 2 is stepped on again, the pedal 2 drives the pawl member 4 to move clockwise around the second rotating shaft 21, so that the ratchet 6 and the pawl 7 are disengaged, and the pawl member 4 rotates around the first rotating shaft under the action of the elastic member 10 20 moves clockwise and is blocked by the limit block 25 to obtain the motion state as shown in FIG. 13 .

When the pedal 2 is released again, as shown in Figure 14, the pedal 2 resets under the pulling force of the parking cable 24, and the pawl member 4 and the mounting plate 9 rotate counterclockwise around the second rotating shaft 21 together with the pedal 2, so that the second The end 16 is in contact with the first reset baffle 12 fixed on the bracket 1 , and the ratchet 7 is in contact with the second reset baffle 26 fixed on the bracket 1 . The first return baffle plate 12 pushes the second end 16 of the elastic member 10 to move in the moving track groove 11, so that the second end 16 passes through the inflection point 19, and then the second end 16 moves to the first movement under the elastic force of the elastic member 10 End 17, so that the second end 16 of the elastic member 10 returns. The second reset baffle 26 pushes the ratchet 7 to reset the ratchet member 4, and returns to the state shown in FIG. 8 at this time.

The foot-operated parking brake device provided by the utility model cancels the waist-shaped hole in the ratchet part, and by setting a moving track groove on the bracket or the pedal, one end of the elastic part moves in the moving track groove, and through the The position of the end in the groove of the moving track changes the direction of action of the elastic force of the elastic member on the pawl, so that the pawl and the ratchet engage or disengage, thereby completing the braking and reset of the foot-operated parking brake device . Therefore, the foot-operated parking brake device provided by the utility model improves the rigidity and life of the ratchet member, and further improves the rigidity and life of the entire foot-operated parking brake device.

Claims (8)

1. A foot-operated parking brake device, which comprises a support (1), a pedal (2), a ratchet (3), a pawl (4) and an elastic member (10), the pedal ( 2) rotatably installed on the bracket (1), the ratchet part (3) is fixed on the pedal (2), the ratchet part (3) has a ratchet (6), the ratchet part ( 4) It is rotatably installed on the bracket (1) through the first rotating shaft (20), the pawl (4) has a pawl (7) and an extension arm (22), and the pawl (7) and the extension The arms (22) are respectively located on both sides of the first rotating shaft (20), the elastic member (10) has a first end (15) and a second end (16), and the first end (15) is fixed on the extension arm (22) on; It is characterized in that the device also includes a moving track groove (11), a first reset baffle (12) and a pusher (23); The moving track groove (11) is arranged on the bracket (1), the moving track groove (11) has a first moving end (17) and a second moving end (18), and the first moving end (18) of the elastic member (10) The two ends (16) can slide in the track groove (11), and when the second end (16) was positioned at the first moving end (17), the first end (15) and the second end ( 16) is positioned at one side of the first rotating shaft (20), and when the second end (16) was positioned at the second moving end (18), the first end (15) and the second end ( 16) is located on the other side of the first rotating shaft (20); The pusher (23) is connected to the extension arm (22) and is arranged on one side of the first moving end (17) of the moving track groove (11), and the first reset baffle (12) is installed on the pedal (2 ) and set on the side of the second moving end (18) of the moving track groove (11), during the parking braking process, when the pedal (2) is loosened for the first time, the pushing member (23) The second end (16) of the elastic member (10) contacts, and when the pedal (2) is released again, the first reset baffle (12) contacts the second end (16) of the elastic member (10). 2. The foot-operated parking brake device according to claim 1, characterized in that, the moving track groove (11) is a broken-line groove or an arc-shaped groove. 3. The foot-operated parking brake device according to claim 1, characterized in that, the moving track groove (11) further includes an inflection point (19), and the inflection point (19) is located at the first moving end (17 ) and the second moving end (18), when the second end (16) of the elastic member (10) is located at the inflection point (19), the elastic force of the elastic member (10) is less than that of the second end (16) of the elastic member (10). ) is located at the elastic force of the elastic member (10) when other positions of the track groove (11) are located. 4. The foot-operated parking brake device according to claim 1, characterized in that the pushing member (23) and the extension arm (22) are integrally structured. 5. A foot-operated parking brake device, which comprises a bracket (1), a pedal (2), a ratchet (3), a pawl (4) and an elastic member (10), the pedal ( 2) rotatably mounted on the bracket (1), the pawl member (4) is rotatably mounted on the pedal (2) through the first rotating shaft (20), and the pawl member (4) has a pawl (7) and the extension arm (22), the pawl (7) and the extension arm (22) are respectively located on both sides of the first rotating shaft (20), and the ratchet part (3) is fixed on the bracket (1) , the ratchet member (3) has a ratchet (6), the elastic member (10) has a first end (15) and a second end (16), the first end (15) is fixed on the extension arm (22) on; It is characterized in that the device also includes a moving track groove (11), a first reset baffle (12) and a pusher (23); The moving track groove (11) is arranged on the pedal (2), the moving track groove (11) has a first moving end (17) and a second moving end (18), and the first moving end (18) of the elastic member (10) The two ends (16) can slide in the track groove (11), and when the second end (16) was positioned at the first moving end (17), the first end (15) and the second end ( 16) is positioned at one side of the first rotating shaft (20), and when the second end (16) was positioned at the second moving end (18), the first end (15) and the second end ( 16) is located on the other side of the first rotating shaft (20); The pusher (23) is connected to the extension arm (22) and is arranged on one side of the first moving end (17) of the moving track groove (11), and the first reset baffle (12) is installed on the bracket (1 ) and set on the side of the second moving end (18) of the moving track groove (11), during the parking braking process, when the pedal (2) is loosened for the first time, the pushing member (23) The second end (16) of the elastic member (10) contacts, and when the pedal (2) is released again, the first reset baffle (12) contacts the second end (16) of the elastic member (10). 6. The foot-operated parking brake device according to claim 5, characterized in that, the moving track groove (11) is a broken-line groove or an arc-shaped groove. 7. The foot-operated parking brake device according to claim 5, characterized in that, the moving track groove (11) further includes an inflection point (19), and the inflection point (19) is located at the first moving end (17 ) and the second moving end (18), when the second end (16) of the elastic member (10) is located at the inflection point (19), the elastic force of the elastic member (10) is less than the second end (16) of the elastic member (10) 16) The elastic force of the elastic member (10) when located in other positions of the moving track groove (11). 8. The foot-operated parking brake device according to claim 5, characterized in that, the pusher (23) and the extension arm (22) are integrally structured.

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