Plastic gear

Abstract

The utility model discloses a plastic gear which comprises a plastic gear body and an installation shaft assembled with the plastic gear body in a matched mode, and a convenient installation mechanism which can be adjusted to be assembled with installation shafts of different sizes and specifications is arranged in the plastic gear body. According to the plastic gear, by rotating the lifting plate, the plastic gear body can be conveniently and rapidly transferred to the position of the mounting shaft, the mounting steps are greatly simplified, and the working efficiency is improved. And under the synergistic effect of the guide rails and the limiting rails, the multiple sets of positioning plates can achieve centering movement and clamp the mounting shaft, and stable assembly between the plastic gear body and the mounting shaft is ensured. By means of the design, the installation accuracy is improved, and the stability of the whole structure is enhanced. And through the meshing mechanism of the pawl and the ratchet disc, the ratchet disc can be automatically locked after fixing is completed, the plastic gear body is effectively prevented from being accidentally disengaged from the mounting shaft in the using process, and the safety and reliability of the device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic gear, specifically relates to a plastic gear. BACKGROUND

[0002] With the sustained growth of domestic and foreign economy and the continuous expansion of the industrial field, the market demand for plastic gears shows a rising trend. Especially in the automobile, electronic, household appliance, toy and precision machinery industries, plastic gears are widely used due to their unique advantages. In order to improve the convenience of plastic gears, some improvements and innovations will be made to the existing plastic gears.

[0003] In the prior art, for example, a plastic gear convenient to disassemble disclosed by Chinese utility model patent (authorized publication number CN221921879U) passes through the rotating shaft and is provided in the plastic gear body, the rotating shaft rotates and drives the plastic gear body to rotate at the same time, through the rotation, the opening of the fixed block and the position of the limiting groove are staggered, and then the position of the plastic gear body is limited, when disassembly is needed, the fixed block is rotated to the position corresponding to the opening and the limiting groove, and the plastic gear body is disassembled from the rotating shaft. However, the existing plastic gear can usually only cooperate with a rotating shaft of a specific size, and lacks universality and flexibility. When different sizes of gears need to be replaced, multiple specifications of gears often need to be prepared, which not only increases the cost, but also reduces the work efficiency. And in the prior art, additional operation steps are needed to fix or reset the carrying tool during the carrying and installation of the gear, which lacks convenience. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a plastic gear, through the synergistic effect of multiple positioning plates in the guide rail and the limiting rail, realizing the centering movement and clamping the installation shaft, and ensuring the stable assembly between the plastic gear body and the installation shaft.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a plastic gear, comprising a plastic gear body and an installation shaft assembled with the plastic gear body, the plastic gear body is provided with a convenient installation mechanism for assembling with installation shafts of different sizes.

[0006] The convenient installation mechanism comprises a connecting frame arranged in the plastic gear body, and multiple positioning plates are slidingly arranged in the connecting frame.

[0007] Preferably, the convenient installation mechanism further comprises an installation plate arranged in the connecting frame, a limiting rail is formed in the installation plate, a sliding block is fixed to one side of the positioning plate close to the limiting rail, and the sliding block is slidingly arranged in the limiting rail.

[0008] Preferably, the convenient mounting mechanism further comprises a ratchet disc rotatably arranged in the connecting frame, a guide track is formed in the ratchet disc, a connecting column is fixed to the side of the ratchet disc close to the positioning plate, and the connecting column is slidably arranged in the guide track.

[0009] Preferably, a pawl that can engage with the ratchet disc is rotatably arranged in the connecting frame, a first torsional spring that can reset the pawl after the pawl is rotated is arranged in the pawl, and a second poking column is fixed to the top end of the pawl.

[0010] Preferably, a first poking column is fixed to the top end of the ratchet disc, and an arc-shaped track for the movement of the first poking column is formed in the top of the connecting frame.

[0011] Preferably, the positioning plate is provided in six groups, and the six groups of positioning plates are distributed around the connecting frame.

[0012] Preferably, the plastic gear body is further provided with a lifting mechanism that can quickly transport the plastic gear body, the lifting mechanism comprises an installation rod arranged in the plastic gear body, and a lifting plate is rotatably arranged outside the installation rod.

[0013] Preferably, a second torsional spring that can reset the lifting plate after the lifting plate is rotated is arranged outside the installation rod, and the two ends of the second torsional spring are connected with the lifting plate.

[0014] Compared with the prior art, the plastic gear provided by the utility model has the following beneficial effects:

[0015] 1. The plastic gear can conveniently and quickly transport the plastic gear body to the position of the mounting shaft by rotating the lifting plate, greatly simplifies the installation steps, and improves the work efficiency. The multiple positioning plates can realize the centering movement and clamp the mounting shaft under the cooperation of the guide track and the limiting track, and ensure the stable assembly between the plastic gear body and the mounting shaft. This design not only improves the installation accuracy, but also enhances the stability of the whole structure.

[0016] 2. The plastic gear can automatically lock the ratchet disc after the fixing is completed through the engagement mechanism of the pawl and the ratchet disc, effectively prevents the plastic gear body from accidentally separating from the mounting shaft during use, and improves the safety and reliability of the device. After completing the transportation task, the lifting plate can be automatically stored in the plastic gear body under the resetting action of the second torsional spring, which not only saves space, but also avoids the interference and damage of the lifting plate outside the device, and embodies the convenience and practicality of the design. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A plastic gear three-dimensional structure of the utility model Figure 1 .

[0018] Figure 2 A plastic gear three-dimensional structure schematic diagram of the utility model Figure 2 .

[0019] Figure 3 A plastic gear convenient installation mechanism three-dimensional structure schematic diagram of the utility model.

[0020] Figure 4 A plastic gear convenient installation mechanism disassembly structure schematic diagram of the utility model.

[0021] Figure 5 A plastic gear lifting mechanism three-dimensional structure schematic diagram of the utility model.

[0022] Figure 6 A plastic gear A place enlarged structure schematic diagram of the utility model.

[0023] In the drawing: 1, plastic gear main body;11, installation shaft;2, convenient installation mechanism;21, connecting frame;22, mounting plate;23, limiting track;24, positioning plate;25, sliding block;26, connecting column;27, ratchet disc;28, guide rail;29, first driving column;210, arc-shaped track;211, pawl;212, first torsional spring;213, second driving column;3, lifting mechanism;31, mounting rod;32, lifting plate;33, second torsional spring. DETAILED DESCRIPTION

[0024] In order to further understand the characteristics, technical means and specific purposes and functions reached by the utility model, the utility model is described in further detail below in combination with the drawings and specific embodiments.

[0025] Embodiment one: please refer to Figures 1-4 The utility model provides a technical scheme: a plastic gear, including plastic gear main body 1 and with its adaptive assembly installation shaft 11, plastic gear main body 1 is provided with the convenient installation mechanism 2 of adjustment to assemble with the installation shaft 11 of different size specifications.

[0026] Convenient installation mechanism 2 includes the connecting frame 21 that is arranged in plastic gear main body 1, and multiple sets of positioning plate 24 are arranged in the sliding mode in connecting frame 21.The design allows plastic gear main body 1 to adapt to multiple size specifications of installation shaft 11, and enhances versatility and flexibility.

[0027] Further, the convenient installation mechanism 2 further comprises an installation plate 22 arranged in the connecting frame 21, a limiting track 23 is arranged in the installation plate 22, a sliding block 25 is fixed to one side of the limiting track 23 close to the positioning plate 24, and the sliding block 25 is slidingly arranged in the limiting track 23. The cooperation of the limiting track 23 and the sliding block 25 ensures the stability and accuracy of the positioning plate 24 during movement, and improves the installation accuracy and reliability.

[0028] Further, the convenient installation mechanism 2 further comprises a ratchet disc 27 rotatably arranged in the connecting frame 21, a guide track 28 is arranged in the ratchet disc 27, a connecting column 26 is fixed to one side of the ratchet disc 27 close to the positioning plate 24, and the connecting column 26 is slidingly arranged in the guide track 28. The design of the ratchet disc 27 and the guide track 28 enables the positioning plate 24 to move synchronously and coordinately, thereby achieving effective clamping of the installation shaft 11 of different sizes.

[0029] Further, a pawl 211 that can engage with the ratchet disc 27 is rotatably arranged in the connecting frame 21, a first torsional spring 212 is arranged in the pawl 211 to reset the pawl 211 after rotation, and a second actuating column 213 is fixed to the top end of the pawl 211. The cooperation of the pawl 211 and the first torsional spring 212 realizes the locking and unlocking functions of the ratchet disc 27, ensuring the stability and safety during installation.

[0030] Further, a first actuating column 29 is fixed to the top end of the ratchet disc 27, and an arc-shaped track 210 is arranged at the top of the connecting frame 21 for the movement of the first actuating column 29. The design of the first actuating column 29 and the arc-shaped track 210 enables the user to conveniently rotate the ratchet disc 27, thereby achieving adjustment of the positioning plate 24.

[0031] Further, the positioning plate 24 is arranged in six groups, and the six groups of positioning plates 24 are distributed around the connecting frame 21. The uniform distribution of the six groups of positioning plates 24 improves the clamping force and stability of the installation shaft 11, ensuring the normal operation of the gear.

[0032] Example two: please refer to Figures 5-6 , and in combination with example one, it is further obtained that the plastic gear body 1 further comprises a lifting mechanism 3 that can quickly transport the plastic gear body 1, the lifting mechanism 3 comprises an installation rod 31 arranged in the plastic gear body 1, and a lifting plate 32 is rotatably arranged outside the installation rod 31. The design of the lifting mechanism 3 enables the user to conveniently transport and install the plastic gear body 1, improving work efficiency and convenience.

[0033] Furthermore, a second torsion spring 33 is provided outside the mounting rod 31 to reset the lifting plate 32 after rotation. The two ends of the second torsion spring 33 are connected to the lifting plate 32. The use of the second torsion spring 33 enables the lifting plate 32 to automatically reset after use, reducing the user's operation steps and improving the convenience of use.

[0034] In actual operation, when it is necessary to install the plastic gear body 1 onto the mounting shaft 11, first rotate the two sets of lifting plates 32 to quickly transfer the plastic gear body 1. Then, pass the plastic gear body 1 through the holes between the multiple sets of positioning plates 24 onto the mounting shaft 11.

[0035] After the plastic gear body 1 reaches the appropriate position of the mounting shaft 11, rotate the second actuating pin 213 to make the pawl 211 rotate and lose engagement with the ratchet disc 27. Then, rotate the first actuating pin 29 to drive the ratchet disc 27 to rotate and make the first actuating pin 29 slide along the arc-shaped track 210.

[0036] Subsequently, the connecting column 26 slides within the guide rail 28. Under the limiting action of the limiting rail 23, the six sets of positioning plates 24 move in the center, clamping the mounting shaft 11 to ensure the stable assembly of the plastic gear body 1 and the mounting shaft 11.

[0037] After fixing, release the pawl 211. Under the reset action of the first torsion spring 212, the pawl 211 resumes engagement with the ratchet disc 27, locking the ratchet disc 27 and preventing the plastic gear body 1 from disengaging from the mounting shaft 11 during use.

[0038] Finally, release the lifting plate 32, and the lifting plate 32 will be retracted into the plastic gear body 1 under the reset action of the second torsion spring 33, completing the installation.

[0039] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A plastic gear, comprising a plastic gear body (1) and a mounting shaft (11) adapted to be assembled therewith, characterized in that: The plastic gear body (1) is provided with a convenient mounting mechanism (2) that can be adjusted to assemble with mounting shafts (11) of different sizes; The convenient installation mechanism (2) includes a connecting frame (21) disposed in the plastic gear body (1), and multiple sets of positioning plates (24) are slidably disposed in the connecting frame (21).

2. A plastic gear according to claim 1, characterized in that: The convenient installation mechanism (2) also includes an installation plate (22) set in the connecting frame (21), a limiting track (23) is provided in the installation plate (22), and a slider (25) is fixed on the side of the positioning plate (24) near the limiting track (23), and the slider (25) is slidably set in the limiting track (23).

3. A plastic gear according to claim 1, characterized in that: The convenient installation mechanism (2) also includes a ratchet disc (27) rotatably disposed in the connecting frame (21), a guide rail (28) is provided in the ratchet disc (27), and a connecting post (26) is fixed on the side of the positioning plate (24) near the ratchet disc (27), and the connecting post (26) is slidably disposed in the guide rail (28).

4. A plastic gear according to claim 3, characterized in that: The connecting frame (21) is rotatably provided with a pawl (211) that can engage with the ratchet disc (27). The pawl (211) is provided with a first torsion spring (212) that resets the pawl (211) after rotation. The top of the pawl (211) is fixed with a second actuating post (213).

5. A plastic gear according to claim 3, characterized in that: The top of the ratchet disc (27) is fixed with a first actuating post (29), and the top of the connecting frame (21) is provided with an arc-shaped track (210) for the first actuating post (29) to move.

6. A plastic gear according to claim 1, characterized in that: The positioning plate (24) is provided in six groups, and the six groups of positioning plates (24) are distributed in the connecting frame (21) with the connecting frame (21) as the circumference.

7. A plastic gear according to claim 1, characterized in that: The plastic gear body (1) is also provided with a lifting mechanism (3) that can quickly transfer the plastic gear body (1). The lifting mechanism (3) includes a mounting rod (31) provided in the plastic gear body (1), and a lifting plate (32) is rotatably mounted on the mounting rod (31).

8. A plastic gear according to claim 7, characterized in that: The mounting rod (31) is provided with a second torsion spring (33) that resets the lifting plate (32) after rotation. The two ends of the second torsion spring (33) are connected to the lifting plate (32).

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