JPH0635067U - forklift - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a forklift having a parking brake device that allows easy brake operation and does not disturb the driver when getting on and off. [Structure] A forklift is arranged between a driver's seat 3, a steering wheel 4 of a steering device in front of the driver's seat 3, and an operating position for applying a braking force and a releasing position for releasing the braking force, which are arranged in the vicinity of the steering wheel. Parking brake device 10 including a possible brake lever. The parking brake device 10 is arranged so as to move from the release position to the operating position when the brake lever is pushed in the direction away from the driver's seat.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a forklift, and more particularly, to a layout structure of a parking brake device thereof.

[0002]

[Prior art]

 FIG. 4 is a schematic side view of a forklift having a conventional parking brake device arrangement structure. The forklift is mounted on the engine hood 1 rotatably around the hinge portion 1a. The driver's seat 3 is rotatably integrated with the engine hood 1. Further, a steering wheel 4 of the steering device is arranged in front of it so that it can be operated by a driver sitting in the driver's seat 3.

A parking brake device 7 attached to the front protector P via a bracket 6 is disposed on the front side of the handle 4. The parking brake device 7 is pulled rearward (to the right in the drawing) by the driver of the driver's seat 3 when applying a braking force, that is, a brake to the machine base, and the solid line position (operating position) indicated by reference symbol A is shown. ) Is taken, and a braking force is applied to the wheel through a brake main body (not shown) connected to a brake operating system including the wire 8. Further, when releasing the brake, the parking brake device 7 is pushed by the driver to take the dotted line position (release position) shown by the symbol B.

A step 9 is provided on the side of the machine base 2, and the driver uses the step 9 to get on and off the driver's seat 3 both when getting on and off the vehicle. The parking brake device 7 is arranged so that, when it is in the release position, the tip of the parking brake device 7 does not project out of the front pillar 5 and interfere with the mast (not shown). Therefore, when in the operating position, the parking brake device 7 is in a state of protruding toward the driver's seat 3.

[0005]

[Problems to be solved by the device]

 When the parking brake is activated, it is absolutely necessary for the driver sitting on the driver's seat 3 to pull the brake lever 7a of the parking brake device 7 toward himself, and the operating force is approximately 25 kg ± 5 kg. Due to the reaction of the operating force, a force acts in the direction in which the driver's body is lifted, making lever operation extremely heavy. In particular, in recent years, women have actually seen remarkable expansion into various workplaces, and in order to make up for the labor shortage, elderly people are often employed to operate forklifts. Heavy lever operations impose heavy labor on women and the elderly, and improvements are strongly desired.

Further, as described above, the parking brake device 7 is always in the operating position when the driver gets on and off the vehicle. In this position, the parking brake device 7 was protruding toward the driver's seat 3 and was an obstacle to getting on and off, but there was a strong stereotype of "pull the brake to operate", and no measures were taken. There wasn't.

Therefore, an object of the present invention is to provide a forklift having a parking brake device which is easy to operate and which does not disturb the driver when getting on and off the vehicle.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a driver's seat, a steering wheel handle in front of the driver's seat, an operating position for applying a braking force and a release position for releasing the braking force, which is disposed in the vicinity of the steering wheel. In a forklift including a parking brake device including a brake lever movable between positions, the parking brake device moves from the release position to the operating position when the brake lever is pushed away from the driver's seat. It is characterized by being arranged to move.

[0009]

[Operation] The brake lever naturally requires a larger force for the driver when shifting from the operating position to the release position than when returning to the releasing position. If the brake lever is moved by the pushing operation as described above instead of the pulling operation as in the conventional case, the driver in the sitting posture can use the reaction of moving the upper body forward.

The driver enters the driver's seat or exits from the driver's seat only when the forklift is stopped, that is, when the parking brake device is in the operating position. You will get on and off the vehicle with the brake lever of the device further away from the driver's seat.

[0011]

【Example】

 Next, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which the same reference numerals indicate the same or corresponding parts.

FIG. 1 illustrates a side view of a portion of a forklift having a toggle parking brake device 10 according to an embodiment of the present invention. Similar to the conventional forklift described with reference to FIG. 4, on the engine hood 1 mounted on the machine base 2 so as to be rotatable about the hinge portion 1a, the engine hood 1 and the engine hood 1 are rotatable together. The driver's seat 3 is prepared. In addition, a steering wheel 4 of the steering device is arranged in front of it, and is operated by a driver seated in the driver's seat 3. Step 9 is used to get on and off the driver's seat 3.

The parking brake device 10 is attached to the front protector P via the bracket 6 on the front side of the handle 4 in the drawing. The parking brake device 10 is operated by a driver seated in the driver's seat 3 as in the conventional case. However, according to the present invention, contrary to the conventional case, the driver moves backward (to the right side in the drawing). ), The dotted line position (release position) shown by the reference symbol B'is taken, and when pushed by the operator, the solid line position (operating position) shown by the reference symbol A'is taken, including the wire 8 and the like. The braking force is applied to the wheels by the brake main body (not shown) via the brake operation system.

FIG. 2 shows the details of the parking brake device 10 described above. In the figure, since the mechanical structure itself may be a well-known one, a brief description will be made. A long hole 14 is formed in a gantry 12 mounted on the bracket 6, and a gas inserted into the long hole 14 is formed. An end of a cable 8 of a brake operating system, which is connected to a brake main body (not shown), is connected to a hook 18 which is guided by the id pin 16 and moves linearly. The toggle mechanism that strongly pulls the cable 8 that is interlocked via the hook 18 is a brake pivotally mounted on the frame 12 at a point on the longitudinal axis of the slot 14 by a pin 22. A lever 24 and a link plate 26 that connects the intermediate point of the brake lever 24 and the guide pin 16 of the hook 18 to each other. The operation of the brake lever 24 in a solid line slightly beyond the dead point from the release position shown by the chain line. By rotating to the position, the cable 8 is pulled through the link plate 26 and the hook 18, and the brake main body operates to brake the wheel.

The brake lever 24 is formed in a hollow cylinder shape, one end of the link plate 26 is connected by a pin 30 to a slider 28 fitted in the hollow cylinder, and the slider 28 is From the upper end of the brake lever 24, it is screwed with the tip of an adjusting rod 32 inserted into the hollow cylinder. Therefore, by rotating the top end knob 34 of the adjusting rod 32 and sliding the slider 28 together with the pin 30 along the long hole 36 of the brake lever 24, the hook 18 of the hook 18 is connected via the link plate 26 which is articulated. The position is adjusted to absorb the above-mentioned play of the brake operating system.

Therefore, when the grip 24a fitted to the brake lever 24 is grasped and pushed in the direction indicated by the arrow, the parking brake device 10 shifts from the release position B'in the chain line to the operating position A'in the solid line, and the cable 8 Is towed upwards and braking force is applied. Conversely, if the brake lever 24 is pulled from the operating position A'to the releasing position B ', the braking force is released. It is to be noted that what is indicated by a chain line in FIG. 2 by a symbol A is the operating position of the conventional parking brake device 7. When comparing this with the operating position A ′ of the present invention, in the present invention, It can easily be seen that the brake lever 24 is located further forward in the actuated position A ′.

In the above embodiment, the case where the toggle type parking brake device is used has been described, but the present invention is not limited to this, and the ratchet type parking brake 40 shown in FIG. 3 may be used. Has the same effect.

That is, in FIG. 3A, since the parking brake devices 40 are arranged in the conventional manner, reference symbol A indicates an operating position indicated by a solid line and reference symbol B indicates a release position indicated by a chain line. A parking brake device is moved to the operating position A by pulling the brake lever 41 in the clockwise direction (direction of the driver's seat (not shown)) around the pin 42, pulling the cable 8 to the wheels. Braking force is applied. The transition from the operating position A to the releasing position B is performed by pressing the push button 45 to disengage the ratchet 44 from the ratchet teeth formed on the sector 43 via the operating rod 46 while the brake lever 41 is opposite to the arrow. Done by pushing in the direction.

FIG. 3B shows an arrangement of the parking brake devices 40 according to the present invention. The parking brake device 40 in the release position B ′ is shown by a solid line by pushing the brake lever 41 in the counterclockwise direction shown by the arrow. Is moved to the operating position A '. By this movement, the cable 8 is pulled and the braking force is applied to the wheels.

[0020]

[Effect of device]

 As described above, according to the present invention, the braking brake device located in front of the driver's seat switches from the release position to the operating position when the driver pushes the brake lever forward to separate the driver further from the driver's seat. It is arranged. The brake lever naturally requires a greater force for the driver when moving from the operating position to the released position than when returning to the released position. However, if the driver is moved by pushing as described above instead of pulling as in the past, the seated driver can use the recoil of the motion of tilting the upper body forward at that time. Even a relatively weak person such as a person can easily apply the parking brake while avoiding an unstable posture in which the waist is lifted.

Further, the driver enters the driver's seat or leaves the driver's seat only when the forklift is in a stopped state, that is, when the parking brake device is in the operating position. Since the passengers get on and off the vehicle further away from the driver's seat, and the obstructive brake lever does not project toward the driver's seat, the frontage of the driver's cab is substantially widened, and getting on and off is very easy.

[Brief description of drawings]

FIG. 1 is a schematic side view of a portion of a forklift in which a toggle parking brake device is arranged according to the present invention.

FIG. 2 is a detailed array diagram of the toggle type parking brake device of FIG.

3A is a schematic view showing an arrangement of a ratchet type parking brake device according to a conventional method, and FIG. 3B is a schematic diagram showing an arrangement of the ratchet type parking brake device according to the present invention.

FIG. 4 is a schematic side view showing a part of a conventional forklift equipped with a toggle-type parking brake device.

[Explanation of symbols]

3 is a driver's seat, 4 is a steering wheel of a steering device, 10 is a parking brake device, 9 is a step, 24 is a brake lever, 40 is a parking brake device, A'is an operating position, and B'is a release position.

Claims (1)

[Scope of utility model registration request] 1. A brake which is arranged between a driver's seat, a steering wheel of a steering device in front of the driver's seat, and an operating position for applying a braking force and a releasing position for releasing the braking force. In a forklift including a parking brake device including a lever, the parking brake device is arranged so as to move from the release position to the operating position when the brake lever is pushed in a direction away from the driver seat. A forklift that is characterized by that.