Angle adjusting mechanism for forklift waist support

Abstract

The utility model discloses an angle adjusting mechanism for a forklift waist support, the waist support comprises a rotating shaft and two hand guards respectively arranged at the two ends of the waist support, the rotating shaft is rotatably arranged on a mounting frame, the angle adjusting mechanism comprises a first locking block arranged on the rotating shaft, a second locking block arranged on the rotating shaft, and a third locking block arranged on the rotating shaft, the first locking block is sequentially provided with a plurality of locking notches in the rotating direction of the first locking block. The second locking block is movably arranged on the mounting frame, and at least one locking bulge is arranged on the second locking block; wherein the end portion of the first locking block abuts against the end portion of the second locking block to limit downward rotation of the waist support, and the locking protrusion extends into any locking notch to limit rotation of the waist support in any direction. According to the utility model, the height / angle of the waist support can be adjusted so as to meet the requirements of drivers with different heights.

Description

Technical Field

[0001] This utility model relates to the field of forklift technology, and in particular to an angle adjustment mechanism for a forklift waist protector. Background Art

[0002] A forklift is a tool used for moving goods. The back support on a forklift serves to protect the driver's safety, stabilizing the driver's posture during operation and preventing excessive swaying that could lead to danger.

[0003] However, existing lumbar supports only have the function of folding up and unfolding, and do not have the function of height or angle adjustment when unfolded, which cannot meet the needs of drivers of different heights. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by this utility model is to propose an angle adjustment mechanism for a forklift waist protector, so as to solve the problem that the waist protector angle is not adjustable in the prior art.

[0005] The technical solution adopted by this utility model to solve its technical problem is an angle adjustment mechanism for a forklift waist protector. The waist protector includes a rotating shaft and two handguards respectively disposed at both ends of the waist protector. The rotating shaft is rotatably mounted on a mounting bracket. The angle adjustment mechanism includes:

[0006] A first locking block is provided on the rotating shaft, and the first locking block has a plurality of locking notches arranged sequentially along its rotation direction;

[0007] A second locking block is movably mounted on the mounting bracket, and the second locking block is provided with at least one locking protrusion;

[0008] Wherein, the end of the first locking block abuts against the end of the second locking block to restrict the waist support from rotating downward, and the locking protrusion extends into any of the locking notches to restrict the waist support from rotating in any direction.

[0009] Furthermore, a hinge seat is provided on the mounting bracket, the second locking block is hinged to the hinge seat, and the second locking block rotates relative to the hinge seat to allow the locking protrusion to extend into or retract from any of the locking notches.

[0010] Furthermore, it also includes a lever, which includes a connecting part and a toggle part, the connecting part being fixedly connected to the second locking block.

[0011] Furthermore, the hinge seat is also provided with a torsion spring for providing a preload force to rotate the second locking block along the locking protrusion toward the locking notch.

[0012] Furthermore, a first limiting block is provided on the mounting bracket, and a second limiting block is provided on the rotating shaft. The second limiting block has a first limiting end and a second limiting end that are opposite to each other. Rotating the waist guard can cause the first limiting end or the second limiting end to abut against the first limiting block.

[0013] When the first limiting end abuts against the first limiting block, the waist guard faces downward; when the second limiting end abuts against the first limiting block, the waist guard faces upward; when the first locking block connects with the second locking block, the waist guard is positioned facing forward of the forklift.

[0014] Furthermore, a gas spring is provided, one end of which is hinged to the waist guard and the other end is hinged to the mounting bracket. When the waist guard faces the front of the forklift, the gas spring can apply a force to the waist guard to make it rotate downward.

[0015] Furthermore, a first hinge portion is provided on the side wall of the rotating shaft, and a second hinge portion is provided on the mounting bracket. One end of the gas spring is hinged to the first hinge portion, and the other end is hinged to the second hinge portion. The gas spring is used to provide thrust to the first hinge portion.

[0016] When the waist support faces the front of the forklift, the first hinge is located above the plane containing the axis of the second hinge and the axis of the rotation shaft.

[0017] Furthermore, when the lumbar support is facing downwards, the first hinge portion is located above the plane containing the axis of the second hinge portion and the axis of the rotation shaft.

[0018] Furthermore, when the lumbar support is facing upwards, the first hinge portion is located below the plane containing the axis of the second hinge portion and the axis of the rotation shaft.

[0019] Furthermore, as the waist support rotates from an upward or downward direction to face the front of the forklift, the gas spring is compressed.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] A first locking block is installed on the rotating shaft, and a second locking block is installed on the mounting bracket. When the first locking block just touches the end of the second locking block, the lumbar support cannot rotate further downwards. To further adjust the height of the lumbar support, first remove the second locking block, allowing the lumbar support to continue rotating downwards. Then, the locking protrusion on the second locking block engages with the locking notch, locking the height of the lumbar support. This allows for adjustment of the lumbar support's height and angle to accommodate drivers of different heights. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of the lumbar support and mounting bracket from one perspective in the embodiment.

[0023] Figure 2 This is a structural schematic diagram of the lumbar support and mounting bracket from another perspective in the embodiment;

[0024] Figure 3 This is a schematic diagram of the structure of the first locking block and the second locking block in the embodiment;

[0025] In the picture:

[0026] 100. Waist support; 110. Rotating shaft; 111. First hinge; 120. Hand guard;

[0027] 200. Mounting bracket; 210. Second hinge;

[0028] 300. First locking block; 310. Locking notch;

[0029] 400. Second locking block; 410. Locking protrusion; 420. Hinge seat; 421. Torsion spring;

[0030] 500, First limit block;

[0031] 600, Second limit block;

[0032] 700. Handle; 710. Connecting part; 720. Actuating part;

[0033] 800, gas spring. Detailed Implementation

[0034] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0035] Please refer to Figure 1-Figure 3 This utility model discloses an angle adjustment mechanism for a forklift waist support. The waist support 100 includes a rotating shaft 110 and two handguards 120 respectively disposed at both ends of the waist support 100. The rotating shaft 110 is rotatably mounted on a mounting bracket 200. The angle adjustment mechanism includes:

[0036] A first locking block 300 is provided on the rotating shaft 110, and the first locking block 300 is provided with a plurality of locking notches 310 in sequence along its rotation direction;

[0037] A second locking block 400 is movably mounted on the mounting bracket 200, and the second locking block 400 is provided with at least one locking protrusion 410;

[0038] Wherein, the end of the first locking block 300 abuts against the end of the second locking block 400 to restrict the waist support 100 from rotating downward, and the locking protrusion 410 extends into any of the locking notches 310 to restrict the waist support 100 from rotating in any direction.

[0039] Specifically, this application provides a first locking block 300 on the rotating shaft 110 and a second locking block 400 on the mounting bracket 200. When the first locking block 300 just contacts the end of the second locking block 400, the lumbar support 100 can no longer rotate downwards. When it is necessary to further adjust the height of the lumbar support 100, the second locking block 400 is first removed, allowing the lumbar support 100 to continue rotating downwards. Then, the locking protrusion 410 on the second locking block 400 engages with the locking notch 310, locking the height of the lumbar support 100. This achieves the adjustment of the height / angle of the lumbar support 100 to accommodate drivers of different heights. Each locking notch 310 corresponds to a different height of the lumbar support 100.

[0040] Furthermore, a hinge seat 420 is provided on the mounting bracket 200, the second locking block 400 is hinged to the hinge seat 420, and the second locking block 400 can rotate relative to the hinge seat 420 to allow the locking protrusion 410 to extend into or retract from any of the locking notches 310.

[0041] Specifically, a hinge seat 420 is provided, and a second locking block 400 is rotatably mounted on the hinge seat 420. By rotating the second locking block 400 relative to the hinge seat 420, the locking protrusion 410 on the second locking block 400 is driven to move up and down to extend into or out of the locking notch 310, thereby unlocking and locking the waist support 100.

[0042] Furthermore, it also includes a lever 700, which includes a connecting part 710 and a toggle part 720. The connecting part 710 is fixedly connected to the second locking block 400. The connecting part 710 is fixedly connected to the second locking block 400, and the toggle part 720 is used to apply force.

[0043] A lever 700 is provided, which, when moved, causes the second locking block 400 to rotate. Specifically, the lever 700 is fixedly connected to the second locking block 400. The functions of the lever 700 are twofold: first, to facilitate the application of force and provide space for force application; and second, to increase the distance between the force application position and the rotation axis of the second locking block 400, thereby extending the lever arm and reducing the required force to save effort.

[0044] Furthermore, the hinge seat 420 is also provided with a torsion spring 421 for providing a preload force to rotate the second locking block 400 along the locking protrusion 410 toward the locking notch 310.

[0045] Specifically, a torsion spring 421 is provided so that when the lever 700 is released, the second locking block 400 can rotate under the elastic force of the torsion spring 421, allowing the locking protrusion 410 to automatically extend into the locking notch 310. Simultaneously, after the locking protrusion 410 extends into the locking notch 310, the elastic force of the torsion spring 421 ensures that the locking protrusion 410 remains abutted within the locking notch 310, thereby enhancing the locking strength of the waist support 100.

[0046] Furthermore, a first limiting block 500 is provided on the mounting bracket 200, and a second limiting block 600 is provided on the rotating shaft 110. The second limiting block 600 has a first limiting end and a second limiting end that are opposite to each other. Rotating the waist support 100 can cause the first limiting end or the second limiting end to abut against the first limiting block 500.

[0047] When the first limiting end abuts against the first limiting block 500, the waist guard 100 faces downward; when the second limiting end abuts against the first limiting block 500, the waist guard 100 faces upward; when the first locking block 300 is in contact with the second locking block 400, the waist guard 100 is positioned in front of the forklift.

[0048] Specifically, the first limiting block 500 and the second limiting block 600 can limit the waist support 100 at its extreme positions at both the upper and lower ends; the first locking block 300 and the second locking block 400 can slightly adjust the height and angle of the waist support 100 when it is in a flat position.

[0049] Furthermore, a gas spring 800 is provided, one end of which is hinged to the waist support 100 and the other end is hinged to the mounting bracket 200. When the waist support 100 is facing the front of the forklift, the gas spring 800 can apply a force to the waist support 100 to make it rotate downward.

[0050] It should be noted that when the end of the first locking block 300 just contacts the end of the second locking block 400, although the waist guard 100 cannot continue to rotate downwards at this time, when the forklift is traveling on a bumpy road, the waist guard 100 is easily lifted up and rotated upwards by the up-and-down movement of the forklift, which can easily cause danger to the driver.

[0051] Based on this, this application provides a gas spring 800. When the waist support 100 faces the front of the forklift, the gas spring 800 can apply a force to the waist support 100 to make it rotate downward, thereby preventing the waist support 100 from jumping up and down with the forklift, so that the end of the first locking block 300 always abuts against the end of the second locking block 400, enhancing the stability of the waist support 100 in this position.

[0052] Furthermore, a first hinge portion 111 is provided on the side wall of the rotating shaft 110, and a second hinge portion 210 is provided on the mounting bracket 200. One end of the gas spring 800 is hinged to the first hinge portion 111, and the other end is hinged to the second hinge portion 210. The gas spring 800 is used to provide thrust to the first hinge portion 111.

[0053] When the waist support 100 faces the front of the forklift, the first hinge portion 111 is located above the plane containing the axis of the second hinge portion 210 and the axis of the rotation shaft 110.

[0054] Specifically, the plane containing the axis of the second hinge 210 and the axis of the rotating shaft 110 can be defined as the reference plane. When the first hinge 111 is above the reference plane, since the gas spring 800 applies an outward pushing force rather than an inward pulling force, the pushing force will inevitably be converted into a force that can make the rotating shaft 110 rotate downward, thus achieving the purpose of preventing the waist support 100 from jumping up and down.

[0055] Furthermore, when the waist support 100 is facing downwards, the first hinge portion 111 is located above the plane containing the axis of the second hinge portion 210 and the axis of the rotation shaft 110.

[0056] Specifically, when the waist support 100 is facing downwards, the first hinge 111 is above the reference plane, so that the gas spring 800 still applies a force to the waist support 100 to make it rotate downwards, preventing it from bouncing upwards with the up and down movement of the forklift.

[0057] Furthermore, when the waist support 100 is facing upward, the first hinge portion 111 is located below the plane containing the axis of the second hinge portion 210 and the axis of the rotation shaft 110.

[0058] Specifically, when the waist support 100 is facing upward, the first hinge 111 is below the reference plane. At this time, the gas spring 800 applies a force to the waist support 100 to make it rotate upward, so as to prevent the waist support 100 from falling downward with the forklift's bouncing when it is in the upward position.

[0059] Furthermore, during the process of the waist support 100 rotating from an upward or downward direction to facing the front of the forklift, the gas spring 800 is compressed.

[0060] During the horizontal rotation at the two extreme positions of upward or downward, the gas spring 800 is gradually compressed. During this rotation, the force exerted by the gas spring 800 on the waist support 100 gradually increases, thereby providing a damping effect on the rotation of the waist support 100 and preventing the waist support 100 from rotating rapidly and causing the first locking block 300 and the second locking block 400 to collide.

[0061] Meanwhile, as the lumbar support rotates from the horizontal direction to the upward or downward direction, the gas spring slowly rebounds, and the rebound speed is less than the rotation speed of the lumbar support. This helps to hold the lumbar support in place and provides a damping effect, preventing the lumbar support from rotating too fast and avoiding collision between the first and second limit blocks.

[0062] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0063] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. An angle adjustment mechanism for a forklift waist guard, the waist guard comprising a rotating shaft and two hand guards respectively provided at both ends of the waist guard, the rotating shaft being rotatably provided on a mounting frame, characterized in that: The angle adjustment mechanism comprises: A first locking block is provided on the rotating shaft, wherein the first locking block is provided with a plurality of locking notches in sequence along the rotation direction thereof; a second locking block movably arranged on the mounting frame, wherein the second locking block is provided with at least one locking protrusion; The end of the first locking block abuts against the end of the second locking block to limit the waist protector from rotating downward, and the locking protrusion extends into any of the locking notches to limit the waist protector from rotating in any direction.

2. The angle adjustment mechanism for a forklift waist guard according to claim 1, characterized in that: A hinged seat is further provided on the mounting frame, the second locking block is hinged to the hinged seat, and the second locking block rotates relative to the hinged seat to allow the locking protrusion to extend into or exit from any of the locking notches.

3. The angle adjustment mechanism for a forklift waist guard according to claim 2, characterized in that: It also includes a shifting handle, which includes a connecting portion and a shifting portion, and the connecting portion is fixedly connected to the second locking block.

4. The angle adjustment mechanism for a forklift waist guard according to claim 2, characterized in that: The hinge seat is further provided with a torsion spring for providing a pre-tightening force for causing the second locking block to rotate along the locking protrusion toward the locking notch.

5. The angle adjustment mechanism for a forklift waist guard according to claim 1, characterized in that: A first limiting block is further provided on the mounting frame, and a second limiting block is further provided on the rotating shaft. The second limiting block has a first limiting end and a second limiting end which are opposite to each other. Rotating the waist protector can cause the first limiting end or the second limiting end to abut against the first limiting block. When the first limiting end abuts against the first limiting block, the waist protector faces downward; when the second limiting end abuts against the first limiting block, the waist protector faces upward; when the first locking block is connected to the second locking block, the waist protector is facing the front of the forklift.

6. The angle adjustment mechanism for a forklift waist guard according to claim 1, characterized in that: A gas spring is also provided, one end of which is hinged to the waist guard and the other end is hinged to the mounting frame. When the waist guard is facing the front of the forklift, the gas spring can exert a force on the waist guard to rotate it downward.

7. The angle adjustment mechanism for a forklift waist guard according to claim 6, characterized in that: A first hinge portion is provided on the side wall of the rotating shaft, a second hinge portion is provided on the mounting frame, one end of the gas spring is hinged to the first hinge portion, and the other end is hinged to the second hinge portion, and the gas spring is used to provide thrust to the first hinge portion; Wherein, when the waist guard faces the front of the forklift, the first hinged portion is located above the plane where the second hinged portion and the axis of the rotating shaft are located.

8. The angle adjustment mechanism for a forklift waist guard according to claim 7, characterized in that: When the waist protector faces downward, the first hinge portion is located above the plane where the second hinge portion and the axis of the rotating shaft are located.

9. The angle adjustment mechanism for a forklift waist guard according to claim 7, characterized in that: When the waist protector faces upward, the first hinge portion is located below the plane where the second hinge portion and the axis of the rotating shaft are located.

10. The angle adjustment mechanism for a forklift waist guard according to claim 6, characterized in that: When the waist protector is rotated from an upward direction or a downward direction to a direction toward the front of the forklift, the gas spring is compressed.

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