Forklift chair with multifunctional armrest

Abstract

The application discloses a forklift seat with a multifunctional handrail, which comprises a seat body and seat handrails installed on both sides of the seat body, wherein the seat handrail on one side is a multifunctional handrail, a switch control module is installed on the multifunctional handrail, a sliding module is installed below the multifunctional handrail, a height lifting module is installed on the side of the seat body, the sliding module is installed on the upper end of the height lifting module, and the multifunctional handrail is adjusted in front-back movement and height lifting through the sliding module and the height lifting module. The application can realize the front-back movement of the handrail through a sliding rail, realize the up-down lifting of the handrail through a motor, realize the functions of the turn signal, forward and backward movement, emergency stop and horn of the whole forklift through a rocker switch, realize the forward and backward movement, inclination and leveling of the mast of the forklift, and improve the comfort and operation convenience of the forklift. The design of the simulated thumb makes the use more humanized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of forklift seats, in particular to a forklift seat with a multifunctional handrail. BACKGROUND

[0002] The current forklift seat handrail only has a supporting function and cannot move forward and backward or be raised and lowered. Most importantly, the current seat does not have an electrical part and cannot control the forward and backward movement, emergency stop, horn, turn signal of the forklift, nor can it control the forklift accessories. SUMMARY

[0003] The purpose of the present application is to overcome the defects of the prior art and provide a forklift seat with a multifunctional handrail.

[0004] The present application is achieved by the following technical solutions:

[0005] A forklift seat with a multifunctional handrail comprises a seat body and seat handrails installed on both sides of the seat body, one of which is a multifunctional handrail. A switch control module is installed on the multifunctional handrail, and a sliding module is installed below the multifunctional handrail. A height lifting module is installed on the side of the seat body. The sliding module is installed on the upper end of the height lifting module, and the multifunctional handrail is adjusted in height and moved forward and backward through the sliding module and the height lifting module.

[0006] The switch control module comprises a horn switch, an emergency stop switch, multiple rocker switches for controlling the forward and backward movement, turn signal, speed switching, headlight, and signal reset of the forklift, a fingertip controller for controlling the forward and backward movement and tilting of the mast, and a blank cover plate for a reserved interface.

[0007] The height lifting module comprises a straight rod motor, a connecting plate, a support rod, and a connecting piece. The connecting plate is fixed to the side of the seat body through three axes arranged in a triangular shape. The two ends of the support rod are connected to the connecting piece and the connecting plate through plane thrust ball bearings. The straight rod motor is rotatably installed below the support rod, and the output end of the straight rod motor is rotatably connected to the connecting piece. The sliding module is installed on the upper surface of the connecting piece. The connecting piece is driven upward by the straight rod motor, and the support rod slowly tilts upward from the horizontal state, thereby driving the sliding module and the multifunctional handrail to move upward.

[0008] A motor control switch is also provided on the lower surface of the multifunctional handrail.

[0009] The support rod has two parts arranged above and below. A lug is provided at the lower end of the lower support rod. The lower end of the straight rod motor is rotatably connected to the lug.

[0010] The sliding module comprises a sliding rail and a sliding block, the sliding rail is fixed to the lower surface of the multifunctional handrail, the sliding block is fixed to the upper surface of the connecting piece, the sliding rail and the sliding block are slidingly fitted, the multifunctional handrail is manually pushed to make the sliding rail slide on the sliding block, so that the multifunctional handrail is adjusted to move forward and backward.

[0011] The sliding block is fixed to the connecting piece through a sliding block base, and a sliding rail locking device is arranged on the sliding block base.

[0012] The sliding rail locking device comprises a positioning block, an adjusting screw and a rotating handle, a positioning groove is formed in the front end of the sliding block on the sliding block base, the positioning block is arranged in the positioning groove, the positioning block is located on the inner side of the sliding rail, a threaded hole is formed in the side surface of the positioning groove, the adjusting screw is arranged in the threaded hole, and the rotating handle is arranged on the adjusting screw; the rotating handle is rotated to make the adjusting screw push the positioning block to press the sliding rail, so that the sliding rail is locked; when the multifunctional handrail needs to be adjusted, the rotating handle is rotated to make the adjusting screw release the positioning block.

[0013] The fingertip controller is a simulated thumb switch with a Hall effect.

[0014] The electrical part: four fingertip controllers with a Hall effect and a plurality of cantilever switches, a horn switch, an emergency stop switch and the like are arranged on the multifunctional handrail to realize the required functions. The multifunctional handrail can move up and down through a straight rod motor and move forward and backward through a sliding rail, so that the height and the forward and backward position can be adjusted. The four fingertip controllers with a Hall effect have mechanical clamping and no contact sensing, and the analog output is lifting, tilting, forward and backward movement and the like. Six cantilever switches control the headlamp, the turn signal, the speed switching, the signal resetting and the like; one horn switch; one emergency stop switch; and one forward and backward movement switch.

[0015] The lifting mechanical principle: the motion principle of a multi-link mechanism is used, the degree of freedom F of the handrail is 3x4-2x6=0, the straight rod motor pushes the rod to change the length of the moving member, and the rod is fixed to be a rigid member, so that the stability during use is ensured.

[0016] The mechanical principle of the handrail translation: the adjusting screw is used to press the sliding rail to ensure that the handrail does not move. When the handrail needs to move forward or backward, the adjusting screw is loosened, the sliding block in the handrail moves to the desired position, and the adjusting screw is tightened again.

[0017] The planar thrust ball bearing is used to realize the cooperation of fixed parts and rotating parts.

[0018] The advantages of this invention are: it can use a slide rail to move the handrail back and forth, use a motor to lift the handrail up and down, use a rocker switch to control the turn signals, forward and reverse movement, emergency stop, and horn functions of the entire forklift, and enable the mast of the forklift to move forward and backward, tilt, and level, thus improving the comfort and ease of operation of the forklift. The simulated thumb design makes it more user-friendly. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the rear structure of the present invention.

[0021] Figure 3 This is a top view of the present invention.

[0022] Figure 4 This is a schematic diagram of the height lifting module structure of the present invention. Detailed Implementation

[0023] like Figures 1-4 As shown, a forklift seat with multi-functional armrests includes a seat body 1 and armrests installed on both sides of the seat body 1. One side of the armrest is a multi-functional armrest 2. A switch control module 3 is installed on the multi-functional armrest 2. A sliding module 4 is installed below the multi-functional armrest 2. A height adjustment module 5 is installed on the side of the seat body 1. The sliding module 4 is installed on the upper end of the height adjustment module 5. The sliding module 4 and the height adjustment module 5 realize the forward and backward movement adjustment and the height adjustment of the multi-functional armrest 2.

[0024] The switch control module 3 includes a horn switch 31, an emergency stop switch 32, multiple rocker switches 33 for controlling the forklift's forward and reverse movement, turn signals, speed switching, headlights, and signal reset, a fingertip controller 34 for controlling the mast's forward, reverse, and tilting movement, and a blank cover plate 35 with reserved interfaces.

[0025] The height adjustment module 5 includes a straight rod motor 51, a connecting plate 52, a support rod 53, and a connector 54. The connecting plate 52 is fixed to the side of the seat body 1 by three shafts 55 arranged in a triangle. The two ends of the support rod 53 are connected to the connector 54 and the connecting plate 52 by pins 58 and planar thrust ball bearings 56, respectively. The straight rod motor 51 is rotatably mounted under the support rod 53, and the output end of the straight rod motor 51 is rotatably connected to the connector 54. The sliding module 4 is mounted on the upper surface of the connector 54. The straight rod motor 51 drives the connector 54 to move upward, and the support rod 53 slowly tilts upward from a horizontal state, thereby driving the sliding module 4 and the multi-functional armrest 2 to move upward.

[0026] A motor control switch 57 is arranged on the lower surface of the multifunctional handrail 2.

[0027] As shown in the figure, the support rods 53 are arranged in two, one above the other, and a lug 59 is arranged at the lower end of the lower support rod 53. The lower end of the straight rod motor 51 is rotatably connected with the lug 59. Figure 4

[0028] The sliding module 4 comprises a sliding rail 41 and a sliding block 42. The sliding rail 41 is fixed on the lower surface of the multifunctional handrail 2, and the sliding block 42 is fixed on the upper surface of the connecting piece 54. The sliding rail 41 and the sliding block 42 are slidingly fitted. The multifunctional handrail 2 is manually pushed to make the sliding rail 41 slide on the sliding block 42, so as to adjust the forward and backward movement of the multifunctional handrail 2.

[0029] The sliding block 42 is fixed on the connecting piece 54 through a sliding block base. A sliding rail locking device is arranged on the sliding block base.

[0030] The sliding rail locking device comprises a positioning block, an adjusting screw and a rotating handle 43. A positioning groove is arranged on the sliding block base at the front end of the sliding block. The positioning block is arranged in the positioning groove. The positioning block is located on the inner side of the sliding rail. Threaded holes are arranged on the side surface of the positioning groove. The adjusting screw is arranged in the threaded holes. The rotating handle 43 is arranged on the adjusting screw. The rotating handle 43 is rotated to make the adjusting screw push the positioning block to press the sliding rail 41, so as to lock the sliding rail 41. When the multifunctional handrail 2 needs to be adjusted, the rotating handle 43 is rotated to make the adjusting screw release the positioning block.

[0031] The fingertip controller 34 is a simulated thumb switch with Hall effect.

[0032] The three shafts 55 are connected with the seat body 1 through threads. According to the principle of three-point fixing a plane, the three shafts 55 can be tightly fitted. The adjusting screw is used to press the sliding rail 41, so that the sliding block 42 and the sliding rail 41 are tightly fitted or loosely fitted. When the sliding block 42 and the sliding rail 41 are loosely fitted, the multifunctional handrail 2 can move forward and backward. The straight rod motor 51 can change the length of the push rod. When the length increases, the height increases. The principle is a plane four-bar mechanism. The two support rods 53, the connecting piece 54, the connecting plate 52 and the straight rod motor 51 form a rigid mechanism with a degree of freedom of 0. 3*4-2*6=0. When the straight rod motor 51 changes, the height of the multifunctional handrail 2 can be changed.

[0033] Various rocker switches 33 are used to control forward and backward movement, turn signal, speed switching, headlight, signal reset, etc. Four thumb switches are used to control the forward and backward movement and inclination of the gantry. The plane thrust ball bearing 56 can rotate with the inner side of the support rod. The outer side of the bearing is a loose ring, which is fixed with a bolt.

[0034] ​The other side armrest 6 of the seat body 1 for supporting the left hand can rotate around an axis and the rotation angle is controllable.

Claims

1. A forklift seat with multi-functional armrests, characterized in that: It includes a seat body and seat armrests installed on both sides of the seat body. One of the seat armrests is a multi-functional armrest. A switch control module is installed on the multi-functional armrest. A sliding module is installed below the multi-functional armrest. A height adjustment module is installed on the side of the seat body. The sliding module is installed on the upper end of the height adjustment module. The front-back movement adjustment and height adjustment of the multi-functional armrest are realized through the sliding module and the height adjustment module. The height adjustment module includes a straight rod motor, a connecting plate, a support rod, and a connector. The connecting plate is fixed to the side of the seat body by three shafts arranged in a triangle. The two ends of the support rod are connected to the connector and the connecting plate by planar thrust ball bearings, respectively. The straight rod motor is rotatably mounted under the support rod, and its output end is rotatably connected to the connector. The sliding module is mounted on the upper surface of the connector. The straight rod motor drives the connector to move upward, and the support rod slowly tilts upward from a horizontal position, thereby driving the sliding module and the multi-functional armrest to move upward. The sliding module includes a slide rail and a slider. The slide rail is fixed to the lower surface of the multi-functional handrail, and the slider is fixed to the upper surface of the connector. The slide rail and the slider are slidably installed. By manually pushing the multi-functional handrail, the slide rail slides on the slider, thereby adjusting the forward and backward movement of the multi-functional handrail. The slider is fixed to the connector by a slider base, and a slide rail locking device is installed on the slider base; The slide rail locking device includes a positioning block, an adjusting screw, and a rotating handle. A positioning groove is formed on the front end of the slider base, and the positioning block is located in the positioning groove. The positioning block is located on the inner side of the slide rail. A threaded hole is formed on the side of the positioning groove, and the adjusting screw is installed in the threaded hole. The rotating handle is installed on the adjusting screw. By rotating the rotating handle, the adjusting screw pushes the positioning block to press the slide rail, thus locking the slide rail. When it is necessary to adjust the multi-functional handrail, the rotating handle is rotated to release the positioning block by adjusting the adjusting screw. The switch control module includes a horn switch, an emergency stop switch, multiple rocker switches for controlling the forklift's forward and reverse movement, turn signals, speed switching, headlights, and signal reset, a fingertip controller for controlling the mast's forward, reverse, and tilt movements, and an empty cover plate with reserved interfaces.

2. A forklift seat with multi-functional armrests according to claim 1, characterized in that: A motor control switch is also provided on the lower surface of the multi-functional handrail.

3. A forklift seat with multi-functional armrests according to claim 1, characterized in that: There are two support rods, arranged one above the other. The lower end of the lower support rod is provided with a lug, and the lower end of the straight rod motor is rotatably connected to the lug.

4. A forklift seat with multi-functional armrests according to claim 1, characterized in that: The aforementioned fingertip controller is a simulated thumb switch with Hall effect.

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