Novel rack push rod mechanism

Abstract

The utility model relates to the field of rack push rods, in particular to a novel rack push rod mechanism, a guide groove is formed in a rack push rod body, a plurality of symmetrical limiting grooves are formed in the inner walls of the two sides of the guide groove, and a guide piece is inserted into the guide groove in a matched mode; and movable blocks are movably arranged in the guide groove and located on the two sides of the guide piece, adjusting cavities are inwards formed in the two sides of the movable blocks, limiting columns are movably arranged in the adjusting cavities, and the limiting columns are matched with the limiting grooves. According to the rack push rod, the limiting columns are inserted into the different limiting grooves, the positions of the movable parts in the guide grooves can be adjusted, and therefore the distance between the movable parts on the two sides can be adjusted, and the stroke of the rack push rod body can be adjusted; the stroke adjusting mode of the rack push rod body is simple and convenient, and a user can use the rack push rod conveniently.

Description

Technical Field

[0001] This utility model relates to the field of rack and pinion technology, and in particular to a novel rack and pinion mechanism. Background Technology

[0002] A rack and pinion linear actuator is a mechanical transmission device widely used in various mechanical equipment and industrial automation systems. It primarily uses a motor to drive a gear to rotate, which then meshes with the rack, causing the rack to move linearly and driving the linear actuator to perform a push-pull motion. This mechanical structure is simple and efficient, suitable for applications requiring large strokes and rapid response.

[0003] Currently, the stroke of traditional rack and pinion actuators on the market is determined by the length of the rack. If it is necessary to change the stroke during operation, it is necessary to replace the rack with one of different lengths or use other complex adjustment mechanisms. This adjustment method is cumbersome and inconvenient for users, so there is an urgent need for a rack and pinion actuator that allows for easy stroke adjustment. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a novel rack and pinion mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A novel rack and pinion mechanism includes a rack and pinion body and a guide member. The rack and pinion body has a guide groove, and multiple symmetrical limiting grooves are formed on the inner walls of both sides of the guide groove. The guide member is adapted to be inserted into the guide groove. Movable blocks are movably arranged on both sides of the guide member in the guide groove. Adjustment cavities are formed on both sides of the movable blocks. Limiting posts are movably arranged in the adjustment cavities, and the limiting posts are adapted to the limiting grooves.

[0007] Furthermore, in a preferred configuration, springs are provided outward on the inner wall of each adjustment cavity, and the other end of each spring is connected to a limiting post.

[0008] In addition, in a preferred configuration, a push plate is fixedly mounted on the top of the end of the limiting post facing the spring, and the push plate extends from the top of the movable block.

[0009] Furthermore, in a preferred configuration, each of the movable blocks has a corresponding push plate cavity, and the push plate cavity and the adjustment cavity are adapted to be connected.

[0010] In addition, a preferred structure is that multiple guide posts are fixedly installed inside each of the push plate cavities, and the push plates are guided to move by the guide posts.

[0011] In addition, a preferred structure is that anti-dropping components are fixedly provided on both inner walls of the adjustment cavity, and anti-dropping grooves are provided on both sides of the limiting post to match the anti-dropping components.

[0012] The beneficial effects of this utility model are as follows: by inserting the limiting post into different limiting grooves, the position of the movable part in the guide groove can be adjusted. In this way, the stroke of the rack push rod body can be adjusted by adjusting the distance between the movable parts on both sides. This method of adjusting the stroke of the rack push rod body is simple and convenient, and easy for users to use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a novel rack and pinion mechanism proposed in this utility model;

[0014] Figure 2 for Figure 1 Enlarged detail view of the active block;

[0015] Figure 3 This is a schematic diagram of the movable block and limiting post of a novel rack and pinion mechanism proposed in this utility model;

[0016] Figure 4 for Figure 3 A schematic diagram of the explosion structure.

[0017] In the diagram: 1 rack push rod body, 11 guide groove, 111 limit groove, 2 guide component, 3 movable block, 31 adjustment cavity, 32 push plate cavity, 33 guide post, 34 anti-drop component, 4 limit post, 41 push plate, 42 anti-drop groove, 5 spring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1-4 A novel rack and pinion mechanism includes a rack and pinion body 1 and a guide member 2. The rack and pinion body 1 has a guide groove 11, and multiple symmetrical limiting grooves 111 are formed on the inner walls of both sides of the guide groove 11. The guide member 2 is fitted into the guide groove 11. Movable blocks 3 are movably arranged on both sides of the guide member 2 within the guide groove 11. Adjustment cavities 31 are formed inward on both sides of the movable blocks 3. Limiting posts 4 are movably arranged within each adjustment cavity 31, and the limiting posts 4 are fitted into the limiting grooves 111.

[0020] The rack and pinion pusher body 1 is provided with a toothed groove and a push rod. By meshing the toothed groove with an external gear and driving the gear, the rack and pinion pusher body 1 can be moved through the adaptive transmission between the toothed groove and the gear, thereby achieving synchronous movement of the push rod. A guide groove 11 is provided on the rack and pinion pusher body 1, and a guide member 2 is fixedly mounted on an external machine and inserted into the guide groove 11. This allows the rack and pinion pusher body 1 to be guided by the fixed guide member 2 when it moves. Furthermore, a guide groove 11 is also provided at the bottom of the rack and pinion pusher body 1 to further improve its guiding performance via a guide rail. It is worth noting that the specific structure and working method of the rack and pinion pusher body 1, guide groove 11, guide member 2, and gear are all existing technologies and will not be described in detail here.

[0021] Each adjusting cavity 31 has an outwardly extending spring 5 on its inner wall, and the other end of each spring 5 is connected to a limiting post 4. The springs 5 ​​allow the limiting post 4 to be pushed outwards.

[0022] Each of the limiting posts 4 has a push plate 41 fixedly mounted on the top of the end facing the spring 5, and the push plate 41 extends from the top of the movable block 3. The movable block 3 has a push plate cavity 32 corresponding to the push plate 41, and the push plate cavity 32 is connected to the adjustment cavity 31. The push plate 41 allows the user to easily adjust the position of the limiting post 4.

[0023] Each push plate cavity 32 is fixedly equipped with multiple guide posts 33, and the push plates 41 are guided to move by the guide posts 33. The guide posts 33 can guide the push plates 41 to improve the stability of the push plates 41 and the limiting posts 4 during movement.

[0024] The regulating cavity 31 has anti-detachment components 34 fixedly installed on both inner walls, and the limiting post 4 has anti-detachment grooves 42 on both sides corresponding to the anti-detachment components 34. The anti-detachment components 34 and the anti-detachment grooves 42 are adapted to prevent the limiting post 4 from falling out of the regulating cavity 31.

[0025] In this embodiment, when the user needs to use the rack and pinion pusher body 1, they only need to assemble the toothed groove on the rack and pinion pusher body 1 onto the external gear, and insert the externally fixed guide member 2 into the guide groove 11. This allows for transmission through the meshing of the toothed groove and the gear, combined with the guidance between the guide groove 11 and the guide member 2, thus driving the pusher. It is worth noting that the rack and pinion pusher body 1, the guide groove 11, the guide member 2, and the gear are all existing technologies, and therefore will not be described in detail.

[0026] Furthermore, when the rack and pinion pusher body 1 is driven, since the guide member 2 is fixed, its position within the guide groove 11 changes as the rack and pinion pusher body 1 moves. The movable member 3 moves synchronously with the rack and pinion pusher body 1. When the guide member 2 contacts the movable member 3, the rack and pinion pusher body 1 cannot move. Therefore, the stroke of the rack and pinion pusher body 1 can be adjusted by regulating the distance between the movable members 3 on both sides.

[0027] When the user needs to shorten the stroke of the rack and pinion pusher body 1, simply shorten the distance between the moving parts 3 on both sides; when the user needs to lengthen the stroke of the rack and pinion pusher body 1, simply lengthen the distance between the moving parts 3 on both sides.

[0028] Furthermore, when the user needs to adjust the movable part 3, they only need to pinch the push plates 41 on both sides of the top of the movable part 3 towards the center. This will cause the limiting posts 4 on both sides to move into the adjustment cavity 31, and at this time the spring 5 is compressed. This will release the mutual jamming between the limiting posts 4 and the limiting groove 111, and the user can then adjust the position of the movable part 3.

[0029] After the user has adjusted the position of the movable part 3, simply release the push plate 41 and then fine-tune the position of the movable part 3 within the guide groove 11. When the adjustment cavities 31 on both sides of the movable part 3 are aligned with the limiting groove 111, the spring 5 will automatically reset through its own elastic force. This will push the limiting post 4 into the limiting groove 111, thus fixing the movable part 3 again through the mutual locking between the limiting post 4 and the limiting groove 111, thereby achieving the adjustment of the position of the movable part 3.

[0030] In this utility model, by inserting the limiting post 4 into different limiting grooves 111, the position of the movable part 3 in the guide groove 11 can be adjusted. In this way, the stroke of the rack push rod body 1 can be adjusted by adjusting the distance between the movable parts 3 on both sides. This method of adjusting the stroke of the rack push rod body 1 is simple and convenient, and easy for users to use.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel rack and pinion mechanism, comprising a rack and pinion body (1) and a guide member (2), characterized in that, The rack push rod body (1) is provided with a guide groove (11), and multiple symmetrical limiting grooves (111) are provided on the inner walls of both sides of the guide groove (11), and the guide member (2) is adapted to be inserted into the guide groove (11). Movable blocks (3) are movably arranged on both sides of the guide member (2) in the guide groove (11). Adjustment cavities (31) are opened inward on both sides of the movable blocks (3). Limiting posts (4) are movably arranged in the adjustment cavities (31), and the limiting posts (4) are adapted to the limiting groove (111).

2. The novel rack and pinion mechanism according to claim 1, characterized in that, Springs (5) are provided outward on the inner wall of each adjustment cavity (31), and the other end of each spring (5) is connected to a limiting post (4).

3. The novel rack and pinion mechanism according to claim 2, characterized in that, Each of the limiting posts (4) has a push plate (41) fixedly mounted on the top of the end facing the spring (5), and the push plate (41) extends from the top of the movable block (3).

4. A novel rack and pinion mechanism according to claim 3, characterized in that, Each of the movable block (3) and the corresponding push plate (41) is provided with a push plate cavity (32), and the push plate cavity (32) and the adjustment cavity (31) are adapted to be connected.

5. A novel rack and pinion mechanism according to claim 4, characterized in that, Multiple guide posts (33) are fixedly installed inside each push plate cavity (32), and the push plates (41) are guided to move by the guide posts (33).

6. A novel rack and pinion mechanism according to claim 1, characterized in that, Anti-dropping parts (34) are fixedly installed on both sides of the inner wall of the adjustment cavity (31), and anti-dropping grooves (42) are opened on both sides of the limiting post (4) to match the anti-dropping parts (34).

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