JPH0353992Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Application Field] The present invention relates to a parking brake device for a vehicle that locks wheels in conjunction with the rotation of a clutch lever pivotally supported on a bar handle that steers the front wheels. [Conventional technology] Off-road vehicles such as motorcycles and three- and four-wheel buggies used for driving on sandy or muddy terrain are equipped with a parking brake device using a clutch lever in addition to front and rear wheel brakes. , for example, has been proposed in Japanese Utility Model Application Publication No. 57-60895. In this device, a parking brake lever equipped with an engagement pin that engages with the clutch lever is pivotally supported on the upper surface of the clutch lever coaxially with the clutch lever, and the lower end of the engagement pin that protrudes when pushed downward. It engages with the clutch lever that rotates when gripped, causing the parking brake lever to rotate together.One end of the locking member covers the top surface of the engagement pin of the parking brake lever that has been rotated to the parking brake operating position. , the other end is latched to a latching step formed on the mounting bracket, so that the parking brake lever is held in the parking brake operating position even after the clutch lever is released. However, with this device, when operating the parking brake device, in addition to pushing the engagement pin and gripping the clutch lever, the locking member must be engaged at the same time, making the operation complicated. It was hot. A vehicle parking brake device that eliminates this complexity has been proposed, for example, in Japanese Utility Model Application Publication No. 156098/1983. This device pivots the clutch lever to the lower part of the lever holder fixed to the bar handle, and also connects the parking brake lever arranged at the lower part of the clutch lever to the lever holder by a pivot other than the clutch lever pivot. An engagement pin provided on the clutch lever is pushed by a push pin provided on the lever holder to engage the parking brake lever, and when the clutch lever is gripped, the parking brake lever rotates together. By further pushing down the push pin and engaging the push pin with the clutch lever, the clutch lever and parking brake lever are held in the parking brake operating position even after the clutch lever is released. It is configured. [Problem to be solved by the invention] Therefore, when operating the parking brake device, it is not necessary to simultaneously engage the locking member in addition to pushing the engagement pin and grasping the clutch lever. Although it is no longer there, it is not possible to hold the clutch lever and parking brake lever in the parking brake operating position unless the push pin, which is a locking member, is pushed down further to engage the clutch lever while the clutch lever is being gripped. Since the clutch lever and the parking brake lever are held in the parking brake operating position, a slight movement of the clutch lever releases the engagement between the push pin and the clutch lever, and the parking brake is released. Furthermore, since both the clutch lever and the parking brake lever are in the locked state when the parking brake is applied, the clutch is in the disengaged state, which means that the transmission has not been shifted to the driving state. However, the transmission gear mesh cannot be used in conjunction with the parking brake force. The present invention solves the above problems by automatically holding the parking brake lever in the parking brake operating position by simply squeezing the clutch lever and pressing down the push pin, and also allows the parking brake lever to be automatically held in the parking brake operating position. In terms of behavior, the purpose is to provide a parking brake device that does not release the parking brake and can also use the meshing of the gears of the transmission as a parking brake force. [Means for solving the problem] The present invention was made in view of the above-mentioned purpose.
A parking brake lever, which is biased in the counter-actuating direction by connection with a parking cable, is pivotally supported on the upper part of the clutch lever that is pivotally supported on the bar handle, and the engagement pin provided on the parking brake lever is projected to engage the clutch. In a parking brake device for a vehicle that engages with a lever and rotates the parking brake lever in the operating direction by gripping the clutch lever, a radial direction is provided in the middle of a vertical sleeve provided on the rotation side of the parking brake lever. A slit is formed to define the sleeve into an upper pin holder and a lower pin holder, and the upper pin holder includes a push pin having a small diameter shaft portion at the lower part and biased upward by the first return spring. At the same time, a second
A slide pin that is urged downward by a return spring is mounted in a ring, and inside the lower pin holder,
The engagement pin protrudes downward of the lower pin holder when pushed by the push pin, and a third return spring that always urges the engagement pin upward, and the engagement pin is provided in the parking brake operating position. A lever stopper to be inserted into the slit is arranged, and an engagement hole into which the slide pin is inserted into the lever stopper, and a small diameter shaft portion of the push pin that opens at the turning side edge of the parking brake lever continuously from the engagement hole. The slide pin is provided with an inclined surface that pushes the slide pin upward upon contact with the lever stopper and allows the lever stopper to be inserted into the slit. It is something. [Operation] With the above configuration, when the push pin of the parking brake lever is pushed down, the descending push pin and slide pin push down the engagement pin, and the lower end of the engagement pin protrudes from the lower pin holder. When the clutch lever is gripped, the clutch lever engages with the protruding lower end of the engagement pin, causing the parking brake lever to rotate in the operating direction, and the slit formed in the parking brake lever enters the lever stopper. While the slide pin is pushed up by the lever stopper, the small diameter shaft portion of the push pin is guided by the guide groove of the lever stopper and introduced into the engagement hole, and the slide pin is pushed up by the lever stopper coming into contact with the inclined surface. 2nd after overcoming the lever stopper
The biasing force of the return spring causes it to descend again and fit into the engagement hole, automatically holding the parking brake lever in the parking brake operating position. [Example] Hereinafter, an example in which the present invention is applied to a three-wheel buggy vehicle will be described based on the drawings. As shown in FIGS. 1 and 2, the bar handle 1
The front wheels 2 are steered by the
The three-wheeled buggy vehicle 4 includes a fuel tank 6 disposed in front of a seat 5, and an engine 7 mounted below the tank 6. The driving force of the engine 7 is transmitted to the rear wheels via a chain 8. 3,3. Bar steps 9, 9 are fixedly installed at the left and right lower portions of the engine 7, a change pedal 10 is provided in front of the bar step 9 on the left side of the vehicle body, and a brake pedal 11 for braking the rear wheels is provided in front of the bar step 9 on the right side.
has been set up. A brake lever 14 for braking the front wheel is attached to the inner side of the right grip 12 of the bar handle 1 via a lever holder 13, and a left grip 15 is attached to the brake lever 14 for braking the front wheels.
Clutch levers 17 are provided at the inner positions of the clutch levers 17 via lever holders 16, respectively. As shown in FIGS. 3 and 4, a parking brake lever 19 of a parking brake device 18 is rotatably supported on the same pivot shaft 20 as the clutch lever 17 at the upper part of the clutch lever 17. As shown in FIGS. A flat lever stopper 21 for locking the parking brake lever 19 in the operating position is disposed on the upper surface of the lever holder 16 and is connected to the pivot shaft 20.
It is fixed with two points: and screw 22. A clutch cable 23 is connected to the clutch lever 17, and a parking cable 24 is connected to the parking brake lever 19, so that both levers 17, 19 are always urged in the counteracting direction. A vertical sleeve 19a is integrally provided on the rotating side surface of the parking brake lever 19, and the sleeve 19a has a slit 25 formed in the radial direction that opens in the middle part toward the rotating direction. The pin holder 26 is defined by an upper pin holder 26 and a lower pin holder 27. Inside the upper pin holder 26 is a guide bush 2.
Guide bushes 29 are press-fitted into the lower pin holders 27, respectively. The guide bush 28 has a push pin 30 and a slide pin 31.
However, the guide bush 29 also has an engaging pin 32.
is interpolated. The push pin 30 descends during operation and engages the engagement pin 3.
a small-diameter shaft portion 33 for pushing the guide button 2 downward; a push button 34 protruding from the upper surface of the guide bush 28;
and a guide sleeve 35 having a flange 35a at the lower end that guides the vertical movement of the push pin 30. The push pin 30 is regulated at the lower limit of the flange 35a by the flange 28a of the guide bush 28 and at the upper end by the locking ring 36, and the elastic force of the first return spring 37 compressed between the flanges 35a and 28a. It is constantly urged upward by force. A sleeve-shaped slide pin 31 is mounted around the small diameter shaft portion 33 of the push pin 30 . The slide pin 31 has an inclined surface 31a formed on its lower outer periphery on the lever stopper 21 side. The inclined surface 3
1a pushes the slide pin 31 upward by contacting the lever stopper 21, and the lever stopper 21 is pushed up.
It serves to allow insertion into the slit 25 of 1. The slide pin 31 is moved to the small diameter shaft portion 3 of the push pin 30 by the elastic force of the second return spring 38 contracted between the slide pin 31 and the guide sleeve 35.
3 is biased toward the lower position where it comes into contact with the stopper pin 39 inserted into the hole. The engagement pin 32 has a flange 32a that guides the slide approximately in the middle of the shaft portion.
2 is a guide bush 29 that connects the lower limit of the flange 32a.
At the flange 29a, the upper end is fixed to the locking ring 40
and is constantly urged upward by the elastic force of the third return spring 41 contracted between the flanges 32a and 29a. The lower ends of each of the push pin 30 and slide pin 31 are in a non-operating state. , the lower end of the upper pin holder 26 is flush with the lower end of the lower pin holder 26, and the lower end of the engaging pin 32 is flush with the lower end of the lower pin holder 27 in the non-operating state. The lever stopper 21 includes a mounting portion 21a fixed to the mounting bracket 16, and a parking brake lever 19 connected to the mounting portion 21a.
It consists of a plate-shaped engaging part 21b that is at the same height as the slit 25 in the operating position of the lever 19 and horizontally arranged in the operating position of the lever 19, and the engaging part 21b has a slide pin of the parking brake lever 19. 31
The small diameter shaft portion 33 of the push pin 30 is inserted into the engagement hole 42 which is continuous with the engagement hole 42 and opens at the turning side edge of the parking brake lever 19.
A guide groove 43 is provided for guiding. Next, the operation of this embodiment configured as above will be explained. When operating the clutch, the lower end of the engagement pin 32 is located within the lower pin holder 27 due to the elastic force of the third return spring 41, as shown in FIG. In this case, the parking brake lever 19 does not rotate together, and only the clutch lever 17 rotates to disengage the clutch via the clutch cable 23. If you stop squeezing the clutch lever 17,
The clutch lever 17 returns to its original position and the clutch becomes connected. When operating the parking brake, the fifth
In the state shown in FIG. A, when the push button 34 of the push pin 30 protruding from the upper surface of the upper pin holder 26 is pushed downward, the push pin 30 itself
The slide pin 31 which has been released from the restriction by the stopper pin 39 descends and comes into contact with the upper surface of the engagement pin 32, and pushes the pin 32 downward to release the engagement pin 32.
The lower end of the pin holder 27 protrudes from the lower surface of the lower pin holder 27 . When the clutch lever 17 is gripped and operated, the protruding lower end of the engagement pin 32 is moved to the clutch lever 1.
7, the parking brake lever 19 rotates in the operating direction.

[Figure 5B]. When the parking brake lever 19 has been rotated to the operating position, the lever stopper 21 is inserted into the slit 25, and the sloped surface 31a of the slide pin 31 contacts the rotation side end of the lever stopper 21, and the parking brake lever 19 contacts the sloped surface 31a. Due to the contact action, the slide pin 31 is pushed upward against the biasing force of the second return spring 38.

[Fig. 5C], Small diameter shaft part 3
3 is guided by the guide groove 43 and enters the engagement hole 42, the slide pin 31, which has been released from being pushed up by climbing over the lever stopper 21, descends again due to the biasing force of the second return spring 38 and enters the engagement hole. 4
2, and the parking brake is activated via the parking cable 24.

[Figure 5D]. This lever stopper 21 is connected to the clutch lever 1.
Even after the grip operation of 7 and the pushing of the push button 34 are released, the slide pin 3 remains biased in the anti-braking direction by the parking cable 24.
Due to the frictional force generated between the side surfaces of 1 and the engagement hole 42,
The engagement is maintained. Furthermore, since the clutch lever 17 is not locked by the lever stopper 21, the clutch cable 2
Since the clutch is returned to its original position by the biasing force in the anti-braking direction of step 3, the clutch is in the connected state, and the engagement of the gears of the transmission that has been shifted to the running state can be used as a parking brake force, making parking more reliable. The brake state is maintained. To release the parking brake, hold and operate the clutch lever 17 once.
When the inner surface 17a of the clutch lever 17 contacts the engagement pin 32 protruding from the lower surface of the lower pin holder 27 and the parking brake lever 19 is further rotated slightly, the slide pin 31 and the engagement hole 42 are brought into contact with each other.
The push pin 30, slide pin 31, and engagement pin 32 are moved to each pin holder 2 by the urging force of their respective return springs.
6, 27, and the parking brake lever 19 returns to its original position by the biasing force of the parking cable 24 in the opposite braking direction. [Effect of the invention] As explained above, the present invention forms a radial slit in the middle part of the vertical sleeve provided on the rotating side of the parking brake lever, and connects the sleeve to the upper pin holder and the lower pin holder. A push pin which is biased upwardly by a first return spring, and a slide pin which is ringed around a small diameter shaft portion at the bottom of the push pin and is biased downwardly by a second return spring are inserted into the upper pin holder. The lower pin holder is provided with an engagement pin that protrudes downward from the lower pin holder when pushed by the push pin, and a third return spring that constantly biases the engagement pin upward. A lever stopper to be inserted into the slit is placed in the operating position, and the lever stopper has an engagement hole into which the slide pin is inserted, and an engagement hole that is continuous with the engagement hole and opens at the turning side edge of the parking brake lever, and the push pin is inserted into the engagement hole. The clutch lever is formed with a guide groove into which the small diameter shaft part is introduced, and the slide pin is provided with an inclined surface that pushes the slide pin upward upon contact with the lever stopper and allows insertion into the lever stopper's slit. The slide pin is locked into the lever stopper simply by gripping the lever and pressing down on the push pin, so the parking brake lever can be automatically held in the parking brake operating position easily with one hand, and the clutch lever can be moved back to its original position. Since the parking brake will not be released even with a slight movement of the clutch lever, and when the parking brake is activated, the clutch will be in the connected state, so the gear mesh of the transmission that has been shifted to the driving state will be affected. can also be used as a parking brake force, and a more reliable parking brake state can be maintained.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a side view of a three-wheeled buggy, Fig. 2 is a plan view of the same, Fig. 3 is a plan view of the two-parking brake device when it is not activated, and Fig. 4 is a plan view of the three-wheeled buggy. - cross-sectional view of Fig. 3, Fig. 5 A,
B, C, and D are main part sectional views showing the operation of the parking brake in order. 16... Lever holder, 17... Clutch lever, 18... Parking brake device, 19...
Parking brake lever, 19a...Sleeve, 20...Pivot, 21...Lever stopper, 2
3...Clutch cable, 24...Parking cable, 25...Slit, 26...Upper pin holder, 27...Lower pin holder, 28, 29...
Guide bush, 30...Push pin, 31...Slide pin, 32...Engagement pin, 33...Small diameter shaft portion, 35...Guide sleeve, 37...First return spring, 38...Second return spring , 41...Third return spring, 39...
Stopper pin, 42...engaging hole, 43...guide groove.

Claims (1)

[Scope of utility model registration request] A parking brake lever, which is biased in the counter-actuating direction by connection with a parking cable, is pivotally supported on the upper part of the clutch lever that is pivotally supported on the bar handle, and the engagement pin provided on the parking brake lever is projected to engage the clutch. In a parking brake device for a vehicle that engages with a lever and rotates the parking brake lever in the operating direction by gripping the clutch lever, a radial direction is provided in the middle of a vertical sleeve provided on the rotation side of the parking brake lever. forming a slit to define the sleeve in an upper pin holder and a lower pin holder;
A push pin is inserted into the upper pin holder, the lower part of which is a small diameter shaft part and which is biased upwardly by a first return spring, and the small diameter shaft part is biased downwardly by a second return spring. The lower pin holder includes the engagement pin that projects downward from the lower pin holder when pushed by the push pin, and the engagement pin that always urges the engagement pin upward. 3 return spring is provided, and the parking brake is activated at the position where the parking brake is activated.
A lever stopper to be inserted into the slit is arranged, and an engagement hole into which the slide pin is inserted into the lever stopper, and a small diameter shaft of the push pin which opens at the turning side edge of the parking brake lever and which is continuous with the engagement hole. The slide pin is provided with an inclined surface that pushes the slide pin upward upon contact with the lever stopper and allows the lever stopper to be inserted into the slit. Parking brake device for vehicles.