A plate assembly, gear box and stepper motor

Abstract

The utility model discloses a kind of plate assembly, gear box and stepping motor. Plate assembly includes upper pole plate and gear plate integrally injection molded in the side of the upper pole plate;Gear plate has fastening part, for fastening the cover plate of assembled gear box. The plate assembly provided by the utility model, which integrally injection molds the upper pole plate and the gear plate together, optimizes the assembly structure, optimizes the radial collision that may be generated in the low-frequency operation process of motor to cause motor abnormal sound;Gear plate is assembled in gear plate, and the noise of separate gear box body model can be tested (i.e. detecting the noise problem of gear box), without gear box noise detection after the completion of the overall assembly of existing motor, optimize product quality detection method, so that its gear box body can independently detect whether its noise meets quality requirement.

Description

Technical Field

[0001] This utility model relates to the field of motor component technology, and in particular to a plate assembly, a gearbox and a stepper motor. Background Technology

[0002] Currently, the gear plates of common stepper motors are made of SECC material through stamping. The gear plate and the upper electrode plate are separate. This structural design has the following problems: the upper electrode plate and the gear plate are separate structures, which requires disassembly in the assembly process, making the process relatively complex and requiring more personnel; the upper electrode plate and the gear are separate structures, and there are unavoidable assembly gaps during assembly, which may cause abnormal noise due to axial vibration caused by low-frequency resonance during motor operation; the gear plate is made of SECC sheet, and the perforated boss formed on it has burrs. When the output shaft head is assembled with the boss, the burrs may cause wear on the shaft head, which will accelerate the wear of the motor's overall lifespan.

[0003] When performing gearbox noise testing on existing stepper motors, the entire motor needs to be assembled before the gearbox noise test can be conducted. However, if a defect is found during the test, the entire riveted motor needs to be disassembled for analysis, resulting in unnecessary losses. Utility Model Content

[0004] Therefore, it is necessary to provide a board assembly, a gearbox, and a stepper motor to address the aforementioned technical problems.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a plate assembly, which includes an upper electrode plate and a gear plate integrally injection molded on one side of the upper electrode plate; the gear plate has a fastening part for fastening the cover plate of the gearbox.

[0007] As a preferred embodiment of the plate assembly provided by this utility model, the fastening part includes at least two fastening posts located around the gear plate, and a clamping element is provided on the top of the posts.

[0008] As a preferred embodiment of the plate assembly provided by this utility model, the clamping member includes at least two clamping rods. After the clamping member is inserted into the clamping hole of the cover plate, the clamping rods are squeezed and then spread open in opposite directions to clamp the clamping hole.

[0009] As a preferred embodiment of the plate assembly provided by this utility model, the fastening part includes at least two buckle holes formed on the gear plate for engaging with the buckle on the cover plate.

[0010] As a preferred embodiment of the plate assembly provided by this utility model, the upper electrode plate includes a plate body with a plurality of glue passage holes; a plurality of pole claws are integrally stamped in the middle of the plate body; the gear plate includes a base plate and a support plate located around the base plate; the base plate has a hole in the middle to facilitate the rotor shaft to pass through, and the support plate is used to support the cover plate.

[0011] As a preferred embodiment of the plate assembly provided by this utility model, the base plate has a shaft hole platform for assembling the output shaft.

[0012] As a preferred embodiment of the plate assembly provided by this utility model, the height of the shaft hole stage is 0.5-0.9mm and the hole wall thickness is 0.3-0.5mm.

[0013] As a preferred embodiment of the plate assembly provided by this utility model, the base plate also has a pinhole platform for assembling plate pins.

[0014] As a preferred embodiment of the plate assembly provided by this utility model, the gear plate is formed of plastic engineering material; or, the gear plate and plate needle are formed of plastic engineering material, and the gear plate and plate needle are integrally injection molded on the upper electrode plate.

[0015] In a second aspect, a gearbox includes a cover plate and the aforementioned plate assembly, wherein a gear plate of the plate assembly is fastened to the cover plate by a fastening portion thereof.

[0016] As a preferred embodiment of the gearbox provided by this utility model, the gearbox further includes an output shaft and a transmission gear set. One end of the output shaft is fitted into the shaft hole platform on the gear plate, and the other end extends out of the cover plate. The transmission gear set has multiple meshing gears, which are respectively fitted on the plate pin.

[0017] Thirdly, a stepper motor includes the plate assembly as described above or the gearbox as described above.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The plate assembly provided by this utility model integrates the upper electrode plate and gear plate through injection molding, reducing processing steps and improving efficiency. Compared to the separate assembly of the upper electrode plate and gear plate, this plate assembly optimizes the assembly structure, reducing motor noise caused by radial collisions during low-frequency operation and minimizing wear on the motor output shaft and gear plate boss during operation, thus improving overall motor lifespan and enhancing product quality. It can extend motor lifespan by 1.3 times, meeting customers' long-life requirements. The gear plate has a fastening part for securing the gearbox cover, optimizing the testing segmentation of the motor body and gearbox. After assembling the cover plate, noise testing of the gearbox can be performed independently (i.e., detecting gearbox noise issues), eliminating the need for complete motor assembly as in existing methods. This optimizes product quality testing methods, allowing independent noise testing of the gearbox to ensure it meets quality requirements. Attached Figure Description

[0020] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the plate assembly of this utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the decomposition process;

[0023] Figure 3 This is a schematic diagram of the gearbox structure of this utility model;

[0024] Figure 4 for Figure 3 Top view;

[0025] Figure 5 for Figure 4 Sectional view at point AA;

[0026] Figure 6 for Figure 3 A schematic diagram of the decomposition process;

[0027] Figure 7 This is a schematic diagram of the structure of the gearbox and fixture of this utility model. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] Example 1: Board Assembly

[0033] Please refer to Figure 1-2 This embodiment provides a plate assembly 1, which includes an upper electrode plate 11 and a gear plate 12, both of which are integrally injection molded.

[0034] The upper electrode plate 11 is a metal or alloy plate, which includes a plate body 111. Several electrode claws 112 are integrally stamped in the middle of the plate body 111. Several glue holes 1111 are also provided on the plate body 111. The upper electrode plate 11 is glued and fixed to the gear plate 12 through the glue holes 1111 on the upper electrode plate 11 to form an integral structure.

[0035] The gear plate 12 is formed of plastic engineering material. The use of plastic engineering material in the gear plate 12 replaces the stamped structural parts made of SECC material, which facilitates the formation of a plastic-coated integrated structure with the upper pole plate 11 through injection molding. The gear plate 12 includes a base plate 121 and a support plate 122 located around the base plate 121. The support plate 122 is used to support the cover plate 2. The base plate 121 is injection molded on the plate body 111, and an opening 1213 is made in the middle of the base plate 121 to facilitate the rotor shaft to pass through the middle of the plate body 111 and the middle of the base plate 121, thereby enabling transmission with the transmission gear set.

[0036] This structural design, with the upper electrode plate 11 and gear plate 12 integrally injection molded, reduces processing steps and improves efficiency. Compared to the separate assembly of the upper electrode plate 11 and gear plate 12, the plate assembly 1 optimizes the assembly structure, reducing motor noise caused by radial collisions during low-frequency operation and minimizing the reduction in overall motor lifespan due to wear between the motor output shaft 3 and the gear plate 12 boss during operation, thus improving product quality. It can increase the original motor lifespan by 1.3 times, meeting customers' long-life requirements.

[0037] Please refer to Figure 1-7 The gear plate 12 also has a fastening part for fastening the cover plate 2 of the gearbox 100. After the transmission gear set is assembled onto the gear plate 12, the cover plate 2 is fastened to the gear plate 12 by the fastening part to form the gearbox 100. Without further assembling other motor structures, the gearbox 100 can be tested for noise independently. Figure 7 As shown, a testing fixture 200 is provided. The fixture 200 includes a platform 210, a rotating shaft 220 located in the middle of the platform 210, a claw groove 230 for embedding the electrode claw 112 opened next to the rotating shaft 220 on the plate, and a positioning table 240 located on the edge of the platform 210. The positioning table 240 is used to position and limit the upper electrode plate 11 so that the gearbox 100 does not rotate relative to the fixture 200. When testing is required, the gearbox 100 is placed on the fixture 200, one side of the upper electrode plate 11 is embedded in the positioning table 240 and the electrode claw 112 is embedded in the claw groove 230, and the rotating shaft 220 is... The shaft 220 passes through the opening 1213 and meshes with the transmission gear set. Specifically, the rotating shaft 220 meshes with gear B 5, gear B 5 meshes with gear C 6, gear C 6 meshes with gear D 7, and gear D 7 meshes with the output shaft 3. The rotating shaft 220 rotates under force (such as a motor drive or other driving components), which drives the gears of the transmission gear set to perform transmission. Noise testing can be conducted. If there is noise pollution, it can be detected in time with few interfering factors. It also eliminates the need for cumbersome rework processes such as unriveting and riveting of the entire motor, as required by existing technologies, and there are no other major interfering factors.

[0038] Furthermore, the fastening part includes at least two fastening posts 123 located around the gear plate 12. There can be two fastening posts 123, three fastening posts 123, etc. Each fastening post 123 has a clamping element 1231 at its top. The clamping element 1231 includes at least two clamping rods 1232. After the clamping hole 21 of the cover plate 2 is fitted into the clamping element 1231, the clamping rods 1232 are compressed and open towards each other, clamping the clamping hole 21. The tension of the clamping rods 1232 clamps the cover plate 2 onto the gear plate 12, with the bottom of the cover plate 2 abutting against the top of the support plate 122. In other embodiments, the fastening part includes at least two snap holes formed on the support plate 122 of the gear plate 12 for engaging with snaps on the cover plate 2. During assembly, after the cover plate 2 is placed on the support plate 122, the snaps are inserted into the snap holes to fasten the cover plate 2 onto the gear plate 12.

[0039] Furthermore, the base plate 121 has a shaft hole platform 1211 for assembling the output shaft 3. The shaft hole platform 1211 is formed synchronously with the gear plate 12 and is also made of plastic, eliminating the burrs of metal or alloy plates and causing minimal wear to the output shaft 3, thus extending the overall service life of the motor. The height and wall thickness of the shaft hole platform 1211 can be adjusted according to actual usage. In this embodiment, preferably but not limited to, the height of the shaft hole platform 1211 is 0.5-0.9 mm, and the hole wall thickness is 0.3-0.5 mm.

[0040] Furthermore, the base plate 121 also has a pinhole platform 1212 for mating with the mounting plate pin 4.

[0041] Furthermore, the base plate 121, support plate 122, fastening part, shaft hole platform 1211, and pin hole platform 1212 on the gear plate 12 are all integrally injection molded onto the upper electrode plate 11. Even further, the plate needle 4 located on the pin hole platform 1212 can also be integrally injection molded onto the upper electrode plate 11. It is worth noting that the plate needle 4 can also be riveted into the pin hole platform 1212.

[0042] Example 2 Gearbox

[0043] Please refer to Figure 3-6 The gearbox 100 of this embodiment includes a cover plate 2 and a plate assembly 1 as described in Embodiment 1 above. The gear plate 12 of the plate assembly 1 is fastened to the cover plate 2 by its fastening part. The gearbox 100 also includes an output shaft 3 and a transmission gear set. One end of the output shaft 3 is fitted into the shaft hole platform 1211 on the gear plate 12, and the other end extends out of the cover plate 2. The transmission gear set has multiple meshing gears, such as gear B 5, gear C 6 and gear D 7, which are respectively fitted on the plate pin 4.

[0044] Example 3 Stepper Motor

[0045] The stepper motor in this embodiment includes a plate assembly 1 as in Embodiment 1 or a gearbox 100 as in Embodiment 2.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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.

[0047] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; conversely, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A panel assembly, characterized by It includes an upper electrode plate and a gear plate integrally injection molded on one side of the upper electrode plate; the gear plate has a fastening part for fastening the cover plate of the gearbox.

2. The board assembly according to claim 1, characterized in that, The fastening part includes at least two fastening posts located around the gear plate, with a clamping element provided on the top of each post.

3. The board assembly according to claim 2, characterized in that, The clamping component includes at least two clamping rods. After the clamping hole of the cover plate is fitted into the clamping component, the clamping rods are squeezed and then spread out in opposite directions to clamp the clamping hole.

4. The board assembly according to claim 1, characterized in that, The fastening part includes at least two buckle holes formed on the gear plate for engaging with the buckles on the cover plate.

5. The board assembly according to claim 1, characterized in that, The upper electrode plate includes a plate body with several glue passage holes; several pole claws are integrally stamped in the middle of the plate body; the gear plate includes a base plate and a support plate located around the base plate; the base plate has a hole in the middle to facilitate the rotor shaft to pass through, and the support plate is used to support the cover plate.

6. The board assembly according to claim 5, characterized in that, The base plate has a shaft hole platform for assembling the output shaft.

7. The board assembly according to claim 6, characterized in that, The height of the shaft hole platform is 0.5-0.9mm, and the hole wall thickness is 0.3-0.5mm.

8. The board assembly according to claim 1, characterized in that, The gear plate is formed of plastic engineering material; or, the gear plate and the pin are formed of plastic engineering material, and the gear plate and the pin are injection molded integrally on the upper electrode plate.

9. A gearbox, characterized in that, It includes a cover plate and a plate assembly as described in any one of claims 1-8, wherein a gear plate of the plate assembly is fastened to the cover plate by its fastening portion; the gearbox further includes an output shaft and a transmission gear set, one end of the output shaft is fitted into a shaft hole platform on the gear plate, and the other end extends out of the cover plate; the transmission gear set has a plurality of meshing gears, which are respectively fitted on plate pins located on the gear plate.

10. A stepper motor, characterized in that, It includes the plate assembly as described in any one of claims 1-8 or the gearbox as described in claim 9.

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