A plastic gear rack

Abstract

The utility model discloses a plastic rack, including base and a plurality of tooth blocks, the base includes L type connecting seat and the limit board of rotation setting in one end of L type connecting seat, be equipped with the locking member of locking its rotation on the limit board, through locking member to make limit board and L type connecting seat combination form the installation cavity of upper opening, a plurality of tooth blocks are arranged in series and are spliced along the length direction of installation cavity, and the limit guide groove of recessing is limited to one side of L type connecting seat along its length direction, and the first limit flange of recessing can be matched with limit guide groove on one side of tooth block. Through the base design is L type connecting seat and the limit board of rotation setting, and is equipped with locking member, makes limit board and L type connecting seat can combination form the installation cavity of upper opening, and this kind of structure design is convenient for the installation and disassembly of tooth block. When the local damage of tooth block appears, need not integral replacement plastic rack, only need to disassemble locking member, open installation cavity, can carry out individual replacement to the damaged tooth block.

Description

Technical Field

[0001] This utility model specifically relates to a plastic toothed rack. Background Technology

[0002] In the field of mechanical transmission, plastic racks are widely used in various automated equipment, office equipment, and light industrial machinery due to their advantages such as light weight, low cost, and low noise. However, existing plastic racks have many shortcomings in their structural design.

[0003] Traditional plastic racks are mostly made of one piece or simply spliced. When a part of the plastic rack is damaged, the whole rack needs to be replaced, which wastes resources and is costly. On the other hand, the installation process of the racks that are simply spliced ​​is more complicated, requiring the use of a variety of tools and auxiliary parts, which not only increases the difficulty of installation, but also prolongs the installation time and reduces production efficiency. Utility Model Content

[0004] In view of the defects of the existing technology, the technical problem to be solved by this utility model is to provide a plastic toothed rack.

[0005] A plastic toothed rack includes a base and several toothed blocks. The base includes an L-shaped connecting seat and a limiting plate rotatably disposed at one end of the L-shaped connecting seat. The limiting plate is provided with a locking member for locking its rotation. The locking member causes the limiting plate and the L-shaped connecting seat to combine to form an upper-opening mounting cavity. Several toothed blocks are arranged and spliced ​​sequentially along the length direction of the mounting cavity. One side of the L-shaped connecting seat has a limiting guide groove recessed inward along its length direction, and one side of the toothed block has a first limiting flange that can cooperate with the limiting guide groove.

[0006] In one embodiment, the locking member includes a U-shaped connecting seat disposed on the limiting plate at both ends of the L-shaped connecting seat, a pin is movably inserted into the U-shaped connecting seat, a pin hole is provided on the inner side of the L-shaped connecting seat, the pin is fitted into the pin hole, a second limiting flange is provided on the pin on the inner side of the U-shaped connecting seat, and a spring is sleeved on the pin between the second limiting flange and the U-shaped connecting seat, so that the pin is kept inserted into the pin hole by the spring.

[0007] In one embodiment, the lower side of the toothed block has a spring sheet that can elastically deform relative to it, and one end of the spring sheet has a third limiting flange protruding outward. A limiting hole is opened through the L-shaped connecting seat corresponding to the third limiting flange, and the third limiting flange is engaged and locked in the limiting hole.

[0008] In one embodiment, the spring and the tooth block are integrally formed.

[0009] In one embodiment, a threaded hole is provided through one of the U-shaped connectors, and a tightening screw that can press against the toothed blocks is inserted into the threaded hole. The tightening screw presses against the toothed blocks so that the sequentially arranged toothed blocks fit tightly together.

[0010] In one embodiment, the width of the mounting cavity is equal to the width of the tooth block.

[0011] In summary, the advantages of this utility model over the prior art are: This invention designs the base as an L-shaped connecting seat and a rotatable limiting plate, and equips it with a locking component. This allows the limiting plate and the L-shaped connecting seat to combine to form an open mounting cavity. This structural design facilitates the installation and removal of the toothed block. When a toothed block is partially damaged, there is no need to replace the entire plastic toothed rack; only the locking component needs to be removed, the mounting cavity opened, and the damaged toothed block can be replaced individually, reducing maintenance costs and improving resource utilization. Furthermore, the concave limiting guide groove on one side of the L-shaped connecting seat cooperates with the convex first limiting flange on one side of the tooth block, and the third limiting flange on the lower side spring plate of the tooth block engages with the upper limiting hole of the L-shaped connecting seat. The double limiting structure effectively improves the stability of the tooth block installation and avoids the tooth block from becoming loose or misaligned during transmission, thereby ensuring transmission accuracy. Attached Figure Description

[0012] Figure 1 This is one perspective view of a plastic toothed rack in one embodiment of the present invention; Figure 2 As one embodiment of this utility model Figure 1 Enlarged view of point A; Figure 3 This is a cross-sectional view of a plastic toothed rack in one embodiment of the present invention; Figure 4 This is a second perspective view of a plastic toothed rack in one embodiment of the present invention. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1 to 4The present invention preferably provides a plastic toothed rack, including a base and a plurality of toothed blocks 1. The base includes an L-shaped connecting seat 2 and a limiting plate 3 rotatably disposed at one end of the L-shaped connecting seat 2. The limiting plate 3 is provided with a locking member 4 for locking its rotation. The locking member 4 causes the limiting plate 3 and the L-shaped connecting seat 2 to combine to form an upper-opening mounting cavity 5. The plurality of toothed blocks 1 are arranged and spliced ​​sequentially along the length direction of the mounting cavity 5. One side of the L-shaped connecting seat 2 is recessed inward along its length direction with a limiting guide groove 6, and one side of the toothed block 1 is protruding with a first limiting flange 7 that can cooperate with the limiting guide groove 6.

[0014] Specifically, during actual assembly, a suitable rotating connector (such as a hinge or rotating shaft) can be used to achieve a rotatable connection between the limiting plate and the L-shaped connecting seat, allowing the limiting plate to rotate around the connection point. By designing the base as an L-shaped connecting seat and the rotatable limiting plate, and equipping it with a locking component, the limiting plate can be locked and combined with the L-shaped connecting seat to form an open mounting cavity. This structural design facilitates the installation and removal of the gear block. When the gear block is partially damaged, there is no need to replace the entire plastic gear rack; simply loosen the locking component, flip the limiting plate to open the mounting cavity, and the damaged gear block can be replaced individually, reducing maintenance costs and improving resource utilization.

[0015] Furthermore, the locking component 4 includes a U-shaped connecting seat 8 disposed on the limiting plate 3 at both ends of the L-shaped connecting seat 2. A pin 9 is movably inserted into the U-shaped connecting seat 8. A pin hole 10 is provided on the inner side of the L-shaped connecting seat 2. The pin 9 is inserted into the pin hole 10. A second limiting flange 11 is provided on the pin 9 on the inner side of the U-shaped connecting seat 8. A spring 12 is sleeved on the pin 9 between the second limiting flange 11 and the U-shaped connecting seat 8. The spring 12 keeps the pin 9 inserted into the pin hole 10.

[0016] Specifically, when it is necessary to combine the limiting plate with the L-shaped connecting seat to form an installation cavity, pull the pin and rotate the limiting plate to the appropriate position, then release the pin. Under the action of the spring force, the pin will automatically insert into the pin hole, thereby locking the limiting plate 3 and forming an upper-opening installation cavity. When it is necessary to rotate the limiting plate to remove the toothed block in the installation cavity, simply pull the pin to compress the spring force, causing the pin to disengage from the pin hole.

[0017] Furthermore, the lower side of the toothed block 1 has a spring piece 21 that can elastically deform relative to it. One end of the spring piece 21 has a third limiting flange 13 protruding outward. The L-shaped connecting seat 2 has a limiting hole 14 through which the third limiting flange 13 is opened. The third limiting flange 13 is engaged and locked in the limiting hole 14.

[0018] Specifically, during installation, the first limiting flange on the toothed block is aligned with the limiting guide groove on the L-shaped connecting seat. The toothed block is then slid into the mounting cavity sequentially along the direction of the limiting guide groove. The toothed block is initially positioned by the cooperation between the first limiting flange and the limiting guide groove. Simultaneously, during the process of installing the toothed block into the mounting cavity, the spring undergoes elastic deformation. When the third limiting flange moves to the position of the limiting hole, it engages with the limiting hole, further limiting and fixing the toothed block to prevent axial movement within the mounting cavity.

[0019] Furthermore, the spring piece 21 and the toothed block 1 are integrally formed. This effectively reduces production costs while ensuring the stability and reliability of the structure.

[0020] Furthermore, a threaded hole 15 is provided through one of the U-shaped connecting seats 8. A tightening screw (not shown in the figure) is inserted into the threaded hole 15 to press against the toothed blocks 1. The tightening screw (not shown in the figure) presses against the toothed blocks, causing the sequentially arranged toothed blocks 1 to fit tightly together. Specifically, after all the toothed blocks are installed, the tightening screw is tightened to press against the toothed blocks, causing the sequentially arranged toothed blocks to fit tightly together, thus improving the overall structural strength and transmission performance of the plastic toothed rack.

[0021] Furthermore, the width of the mounting cavity 5 is equal to the width of the toothed block 1. This ensures a tight fit of the toothed block within the mounting cavity and avoids problems such as toothed block wobbling caused by excessive mounting gaps.

[0022] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A plastic toothed rack, characterized in that: The device includes a base and several toothed blocks (1). The base includes an L-shaped connecting seat (2) and a limiting plate (3) rotatably disposed at one end of the L-shaped connecting seat (2). The limiting plate (3) is provided with a locking member (4) for locking its rotation. The locking member (4) causes the limiting plate (3) and the L-shaped connecting seat (2) to combine to form an upper-opening mounting cavity (5). Several toothed blocks (1) are arranged and spliced ​​sequentially along the length direction of the mounting cavity (5). One side of the L-shaped connecting seat (2) has a limiting guide groove (6) recessed in its length direction. One side of the toothed block (1) has a first limiting flange (7) that can cooperate with the limiting guide groove (6).

2. The plastic toothed rack according to claim 1, characterized in that: The locking component (4) includes a U-shaped connecting seat (8) located on the limiting plate (3) at both ends of the L-shaped connecting seat (2). A pin (9) is inserted into the U-shaped connecting seat (8) in a vertically movable manner. The L-shaped connecting seat (2) has a pin hole (10) on its inner side. The pin (9) is inserted into the pin hole (10). A second limiting flange (11) is provided on the pin (9) on the inner side of the U-shaped connecting seat (8). A spring (12) is sleeved on the pin (9) between the second limiting flange (11) and the U-shaped connecting seat (8). The spring (12) keeps the pin (9) inserted into the pin hole (10).

3. A plastic toothed rack according to claim 1, characterized in that: The toothed block (1) has a spring piece (21) on its lower side that can elastically deform relative to it. One end of the spring piece (21) has a third limiting flange (13) protruding outward. The L-shaped connecting seat (2) has a limiting hole (14) through which the third limiting flange (13) is opened. The third limiting flange (13) is engaged and snapped into the limiting hole (14).

4. A plastic toothed rack according to claim 3, characterized in that: The spring piece (21) and the toothed block (1) are integrally formed.

5. A plastic toothed rack according to claim 2, characterized in that: A threaded hole (15) is provided through one of the U-shaped connectors (8). A tightening screw that can press against the toothed blocks (1) is inserted into the threaded hole (15). The tightening screw presses against the toothed blocks (1) so that the toothed blocks (1) arranged in sequence fit tightly together.

6. A plastic toothed rack according to claim 1, characterized in that: The width of the mounting cavity (5) is equal to the width of the tooth block (1).

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