JP4998034B2 - Binder - Google Patents

Description

The present invention relates to Vine da.

Recently, Oite to Vine da, when parking, such as in slope, the vehicle body by the vehicle body its own weight in order to prevent that move in inclined downward side, providing the parking brake is desired.

As such a parking brake for the binder, a parking brake for braking the rotation of the traveling wheel is provided on a traveling output shaft that projects from the transmission case and transmits the traveling power to the chain case at a side position of the transmission case. The thing is known (for example, refer patent document 1).
Japanese Patent Laid-Open No. 11-127669

  The travel output shaft that protrudes from the transmission case extends through the chain case to the outer side opposite to the transmission case in order to provide a parking brake device. Since the parking brake device is provided at the extended portion of the travel output shaft that is extended, the configuration is not simple, and the brake device protrudes greatly outside the chain case, and the brake cover, brake drum, Many parts such as brake cams and brake arms are required, and there is a problem that is difficult to implement at low cost. Further, since the parking brake is a friction type parking brake, if the vehicle is driven without completely releasing the parking brake, there is a problem in that the parking brake is prematurely worn or damaged, resulting in a decrease in durability. Moreover, if the parking brake is not applied sufficiently and left on an inclined ground in a half-brake state, there is a drawback that the airframe moves unknowingly due to its own weight.

  It is an object of the present invention to implement a parking brake device that can be implemented at a low cost with a simple configuration and is reliable in operation.

The present invention has taken the following technical means in order to solve the above-described problems.
That is, the first aspect of the present invention includes a bundling portion cutting in front of the right and left running wheels (2) (3), a rear portion of the rear become car body running wheels (2) equipped with an engine (E) In addition, the rotational power of the engine (E) is transmitted to the traveling wheel (2) via the traveling mission case (8) and the chain case (9), and the walking operation handle ( in the binder having a seven), comprising a support shaft (31) disposed in a portion between the front and rear direction of the vehicle body traveling wheels (2) and the engine (E) in the lower portion of the chain case (9), said supporting A base end portion of the parking brake lever (20) is connected to a front end portion of the swing arm (21) swinging around the shaft (31), and the rear end portion of the swing arm (21) and the engaging claw operating arm are connected. (18) Pull the tension spring (22) between the rear end. When the parking brake lever (20) is pulled to the rear parking brake operating position, the swinging arm (21) is rotated in the standing direction so that the tension spring (22) exceeds the support shaft (31). The engagement claw operating arm (18) and the engagement claw (16) rotate downward integrally by the tension of the tension spring (22), and the engagement claw (16) is a wheel inside the chain case (9). The binder is characterized in that it engages with the drive chain (13) to stop the rotation of the wheel drive chain (13).

For parking brake equipment for braking the rotation of the driving wheel (2) is by engaging claw (16) for stopping the rotation engages the wheel drive chain in the chain case (9) (13) It can be stopped reliably with a simple configuration. Further, since the engaging claw ( 16 ) can be provided in the chain case ( 9 ) , the braking device is not exposed to the outside of the chain case as in the prior art, and the configuration is simple and compact, The number of parts is small and it can be implemented at low cost.

The invention according to claim 2 is provided with a stand (30) that swings up and down around the support shaft (31), and in a state in which the stand (30) is rotated and stored in a tilting direction, the stand (30) is stored. 2) The binder according to claim 1, wherein the foot (30a) provided at the tip of the upper part is located in a lower part of the engine (E) behind the chain case (9) .

According to a third aspect of the present invention, the walking operation handle (7) is provided with a traveling clutch lever (4), and the traveling clutch lever (4) is rotated by swinging from the neutral position in the front-rear direction. A clutch cam (24) for engaging the traveling clutch is provided, and a check member (25) for checking the engaging and disengaging operations of the traveling clutch lever (4) is provided at a portion near the traveling clutch lever (4). In a state where the check member (25) and the engaging claw operating arm (18) are connected by an interlocking wire (27) and the parking brake lever (20) is pulled to the parking brake operating position. The binder according to claim 1 or 2, wherein rotation of the clutch cam (24) is prevented by a check pin (26) protruding from the check member (25).

According to the first aspect of the present invention, the traveling wheel ( 2 ) can be reliably braked with a simple configuration in which the engagement claw ( 16 ) is simply engaged with the wheel drive chain ( 13 ) . claws (16) because is housed in the chain case (9), a conventional parking brake system as it is not necessary to expose larger outside of Chenke scan, obtained by implementing a concise and compact parking brake system And can be provided at low cost. In addition, since the half brake state is less likely to occur than when using a friction brake, the braking state and the non-braking state of the traveling wheel ( 2 ) are clear, and the vehicle is started and parked in the half brake state. It is difficult to damage the brake device, and durability can be improved. In addition, it is possible to reduce the problem of leaving the vehicle body in the half-brake state and moving on the slope, thereby improving safety.
Further, a swing arm (21) that rotates around a support shaft (31) provided at the lower part of the chain case (9), and an engagement claw operating arm (18) that rotates together with the engagement claw (16). Are connected via a tension spring (22), the fulcrum of the swing arm (21) can be easily exceeded, and the operation of the parking brake is ensured.

When Ru good to the invention 請 Motomeko 2 wherein, in addition to the effect of the invention according to the first aspect, when receiving the stand (30) for undulating rotating said shaft (31) around the engine (E) Since the foot (30a) of the stand (30) is located on the lower side, when the stand (30) is raised, the stand (30) can be easily raised even with the walking operation handle (7) held. Can.
According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, it is possible to restrain the travel clutch from being engaged when the parking brake is operated.

Embodiments of the present invention will be specifically described below with reference to the drawings.
Figure 1 shows a binder for binding while cutting the napped culms of 圃 field, and this binder B has a pair of right and left running wheels in the front-rear direction intermediate portion of the (rubber tire) 2,2 body 1 In front of the traveling wheels 2 and 2, there is provided a cutting and binding portion 3 that cuts, binds and discharges the napped grains. A walking operation handle 7 including an operation tool such as a clutch lever 6 is provided so as to protrude rearward from the vehicle body 1. An engine E is mounted on the rear portion of the vehicle body 1. The rotational power from the engine E is configured to be linked to the traveling wheel 2 through the traveling mission case 8 and the chain case 9. The chain case 9 is fixed to a drive sprocket 11 that is integrally fitted to a traveling output shaft 10 that protrudes from the traveling mission case 8, and an intermediate shaft 2b that is loosely fitted between the left and right axles 2a and 2a of the traveling wheel 2. The driven sprocket 12 and the wheel drive chain 13 that is turned between the two sprockets 11 and 12 are internally provided. Ball clutches 2c, 2c are provided between the intermediate shaft 2b and the left and right axles 2a, 2a so that the ball clutches 2c, 2c can be disconnected by operating the left and right side clutch levers 5, 5. .

  The parking brake device 15 for braking the rotation of the traveling wheel 2 is engaged with a wheel drive chain 13 to lock the rotation of the wheel drive chain, and the engagement claw 16 is connected to the wheel drive chain 13. Switch operating mechanisms 17, 18, etc. for switching between a braking state to be engaged with the vehicle and a brake releasing state to be disengaged from the wheel drive chain 13. The parking brake lever 20 provided below the operation handle 7 is connected via an operation interlocking mechanism. Linked together.

  The engaging claw 16 is mounted on the interior of the chain case 9, and is fixed to the rotating shaft 17 rotatably mounted on the left and right side walls of the chain case 9. By engaging the engaging claw operating arm 18 fixed to the outer end of the wheel with a return spring 19, the engaging claw 16 engages with the wheel drive chain 13 to lock the rotation of the wheel drive chain 13. It is configured so that it can be switched between a braking state and a braking release state in which it is detached from the wheel drive chain 13 to release the lock.

The parking brake lever 20 is connected at its base end to a swing operation arm (swing arm) 21 that can swing around the support shaft 31 of the stand 30, and the swing operation arm 21 is connected via a tension spring 22. The engaging claw operating arm 18 is connected. When the parking brake device 15 is switched to the brake operating state, the brake lever 20 is pulled backward, and the grip operation portion of the parking brake lever 20 is close to the position below the grip portion 7a of the operation handle 7. When the pulling operation is performed, the engagement claw 16 is moved to the wheel via the operation interlocking mechanism using the swing operation arm 21 and the tension spring 22 and the switching operation mechanism such as the rotation shaft 17, the engagement claw operation arm 18, and the return spring 19. It can be engaged with the drive chain 13 to switch to the locked state, and when the parking brake device 15 is switched to the brake released state, the engaging claw 16 is driven by pushing the brake lever 20 back to the front side. It is configured such that it can be detached from the chain 13 and switched to a brake release state.

The tension spring 22 spans between the pin P1 at the rear end of the swing operation arm 21 and the pin Q at the rear end of the engagement claw operating arm 18, and the rod front end (base end) of the parking brake lever 20 is It is pivotally attached to a pin P2 at the front end of the swing operation arm 21. Accordingly, when the parking brake lever 20 is pulled rearward, the swing operation arm 21 rises and rotates, and the tension spring 22 is pulled and exceeds the fulcrum, and the engagement claw operating arm 18 and the engagement claw are pulled by the tension force of this spring. 16 is turned downward, and the engaging claw 16 engages with the wheel drive chain 13 to be locked.

  By connecting the swing operation arm and the engaging claw operation arm via a tension spring, the swing operation arm can be easily moved beyond the fulcrum, and the operation is ensured. Also, by providing a return spring on the engaging claw operating arm, it is possible to ensure the return when the brake is released.

  The stand 30 is configured to swing up and down around a support shaft 31, and the support shaft 31 is supported by a support bracket 32 provided at the lower part of the chain case 9, and the traveling wheel 2, the engine E, It is set near the middle of (the rear of the center of gravity of the binder). When the stand is stored, the arrangement is made so that the stand 30a is positioned below the chain 9 and below the engine E behind the chain case. When the stand is stowed, the foot of the stand is located below the engine, so when the stand stands up, the stand can be easily raised even with the operation handle held, and the stand is stored under the chain case. It can be configured in a narrow space.

  The traveling clutch lever 4 is configured to be swingable in the front-rear direction. The clutch is engaged by the operation of the clutch cam 24 by the swinging operation from the neutral position to the front, and the machine body moves forward and swings from the neutral position to the rear. By operation, the clutch is engaged via the clutch cam 24, and the machine body moves backward. The clutch cam 24 rotates counterclockwise regardless of whether the clutch lever 4 is operated forward or backward. A restraining member 25 that restrains the on / off operation of the travel clutch lever is provided near the travel clutch lever 4 and is configured to be rotatable about the axis X. And this check member 25 connects the engaging claw operating arm 18 and the check member 25 to the interlocking wire so that it operates in conjunction with the movement of the engaging claw operating arm 18 that engages and disengages the engaging claw 16 of the parking brake. 27, etc., and linked so that the travel clutch is not engaged when the brake is activated. In other words, when the parking brake lever 20 is operated to the brake “on” position, the check member 25 is rotated from the illustrated phantom line to the actual state position, and is clutched by the check pin 26 protruding from the check member 25. The cam 24 is prevented from rotating.

Binder side view Same as above Cross sectional view of the main part Expanded plan sectional view of the main part Side view of the main part Side view for explanation showing a related configuration of the traveling clutch lever and the check member Side view for explaining the main part Side view for explaining the main part

2 running wheels
3 Cutting tie unit
4 traveling clutch lever 7 walking operation handle 8 traveling mission case 9 chain case 13 wheel drive chain 15 parking brake device 16 engaging claw 17 rotating shaft 18 engaging claw operating arm 20 parking brake lever 21 swing operation arm (swing arm)
22 Tension spring
24 clutch cam
25 check members
26 check pins
27 interlocking wire
30 stands
30a foot
31 spindle E engine

Claims (3)

Comprising the binding portion cutting in front of the right and left running wheels (2) (3), equipped with an engine (E) to a rear portion of the rear become car body running wheels (2), rotational power of the engine (E) was configured to transmit the traveling transmission case (8) and running wheels via a chain case (9) (2), from the rear part of the vehicle body in a binder having a walking operating handle (7) toward the rear, vehicle A support shaft (31) disposed in a portion between the traveling wheel (2) and the engine (E) in the front-rear direction is provided at the lower portion of the chain case (9) and swings around the support shaft (31). A base end portion of the parking brake lever (20) is connected to a front end portion of the moving arm (21), and between the rear end portion of the swing arm (21) and the rear end portion of the engaging claw operating arm (18). A tension spring (22) is passed over the parking brake lever (20 Is pulled to the rear parking brake operating position, the swing arm (21) is rotated in the direction to stand up, and the tension spring (22) exceeds the support shaft (31), and the tension spring (22) The engaging claw operating arm (18) and the engaging claw (16) rotate downward integrally by tension, and the engaging claw (16) engages with the wheel drive chain (13) inside the chain case (9). binder, characterized in that a configuration for stopping the rotation of the wheel drive chain (13) and. In the state where the stand (30) that swings up and down around the support shaft (31) is provided, and the stand (30) is rotated and stored in the direction of lying down, the foot provided at the tip of the stand (30) The binder according to claim 1, wherein (30a) is located in a lower part of the engine (E) behind the chain case (9) . A clutch cam provided with a travel clutch lever (4) on the walking operation handle (7), and pivoting by turning the travel clutch lever (4) from the neutral position in the front-rear direction to engage the travel clutch. (24), a check member (25) for checking the turning operation and turning operation of the running clutch lever (4) is rotatably provided at a portion in the vicinity of the running clutch lever (4). (25) and the engaging claw operating arm (18) are connected by an interlocking wire (27), and in a state where the parking brake lever (20) is pulled to the parking brake operating position, the check member (25) The binder according to claim 1 or 2, wherein rotation of the clutch cam (24) is prevented by a protruding check pin (26).

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