Dustproof rotor structure and automatic press-in method

Abstract

The embodiment of the invention provides a dustproof rotor structure and an automatic press-in method, and relates to the technical field of electric tools. The dustproof rotor structure comprises a rotor and a cover body, the rotor comprises a rotating shaft and an iron core sleeving the rotating shaft, the iron core is provided with a first butt joint part, and a positioning block is annularly arranged on the outer wall of the rotating shaft; the cover body is provided with a second butt joint part and positioning grooves, the number of at least one of the positioning blocks and the positioning grooves is multiple, and the positioning blocks are used for being embedded into the positioning grooves so that the first butt joint part can be in butt joint with the second butt joint part. The positioning blocks are arranged on the outer wall of the rotating shaft, and the positioning grooves matched with the positioning blocks are formed in the cover body, so that in the mounting process, one or more positioning blocks can be embedded into one or more positioning grooves only by rotating the rotating shaft and the cover body by a small angle, and the first butt joint part and the second butt joint part are in butt joint; and the installation is convenient, the efficiency is high, and automatic installation can be achieved.

Description

Technical Field

[0001] This invention relates to the field of power tool technology, and more specifically, to a dustproof rotor structure and an automated pressing method. Background Technology

[0002] Current power tools typically have dustproof structures on their rotors. However, the installation of these dustproof structures usually requires manual searching of specific installation locations before the equipment presses them in, or using a camera to locate specific installation locations before the equipment presses them in. This process is complex and involves too many steps, resulting in low installation efficiency and preventing automated production. Summary of the Invention

[0003] This invention provides a dustproof rotor structure and an automated pressing method, which enables automated installation, is convenient and efficient.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, the present invention provides a dustproof rotor structure, comprising:

[0006] The rotor includes a rotating shaft and an iron core sleeved outside the rotating shaft. The iron core is provided with a first mating part, and the outer wall of the rotating shaft is provided with a positioning block.

[0007] The cover body is provided with a second docking part and a positioning groove, wherein there are multiple positioning blocks and positioning grooves, and the positioning blocks are used to embed into the positioning grooves so that the first docking part and the second docking part are docked.

[0008] In an optional embodiment, the positioning groove is recessed into the inner wall of the cover, and the inner wall of the cover is also provided with a guide surface, which is used to restrict the plurality of positioning blocks within the guide surface so that the axis of the rotor and the cover are on the same straight line.

[0009] In an optional embodiment, the inner wall of the cover is provided with a first guide groove along the circumferential direction. The first guide groove is adjacent to the positioning groove and is arranged sequentially along the axial direction of the cover. The bottom wall of the first guide groove forms the guide surface. The inner diameter of the arc surface where the guide surface is located is greater than the outer diameter of the positioning block relative to the rotating shaft.

[0010] In an optional embodiment, the inner wall of the cover is further provided with a second guide groove, which is recessed in the guide surface. The second guide groove is adjacent to the positioning groove and is arranged sequentially along the axial direction of the cover.

[0011] In an optional embodiment, the inner diameter of the inner wall of the cover is smaller than the outer diameter of the positioning block relative to the rotating shaft, and when the positioning block is embedded in the positioning groove, the outer wall of the rotating shaft is interference-fitted with the inner wall of the cover.

[0012] In an optional embodiment, there are multiple positioning blocks and multiple positioning slots, with each positioning block and multiple positioning slots corresponding to one another. The multiple positioning blocks are evenly arranged around the outer wall of the rotating shaft, and the multiple positioning slots are evenly arranged around the inner wall of the cover.

[0013] In an optional embodiment, the positioning block protrudes from the outer wall of the rotating shaft and extends along the axial direction of the rotating shaft, and the end of the positioning block is also provided with a guide surface, which is used to guide the positioning block to extend into the positioning groove.

[0014] In an optional embodiment, the area of ​​the guide surface gradually decreases along the extension direction of the guide surface, and it is inclined toward the surface of the rotating shaft.

[0015] Secondly, the present invention provides a dustproof rotor structure, the dustproof rotor structure including a rotor, a cover and a fan blade, the rotor including a rotating shaft and an iron core sleeved outside the rotating shaft, the iron core being provided with a first docking portion, and the outer wall of the rotating shaft being provided with a positioning block;

[0016] The fan blade is connected to the cover, and the fan blade is provided with a positioning groove. The second docking part is provided on the cover. The number of at least one of the positioning block and the positioning groove is multiple. The positioning block is used to embed into the positioning groove so that the first docking part and the second docking part are docked.

[0017] Thirdly, the present invention provides an automated pressing method applicable to the dustproof rotor structure as described in any of the foregoing embodiments, the automated pressing method comprising:

[0018] Align the second docking portion of the cover with the first docking portion of the rotor;

[0019] The elastic element is pressed against the cover to drive the cover to move and rotate toward the rotor, so that the positioning block of the rotor is aligned with the positioning groove in sequence under the guidance of the first guide groove and the second guide groove, and is embedded into the positioning groove under the elastic force of the elastic element; and the second docking part docks with the first docking part.

[0020] The beneficial effects of the dustproof rotor structure and automated pressing method provided in this embodiment of the invention include: by setting a positioning block on the outer wall of the rotating shaft and setting a positioning groove matching the positioning block on the cover, during the installation process, it is only necessary to rotate the rotor and the cover by a small angle to make one or more positioning blocks embedded in one or more positioning grooves, thereby making the first docking part and the second docking part dock, thus realizing the installation of the cover. The installation is convenient and efficient, and can realize automated installation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a dustproof rotor structure provided in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the rotor structure provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the first-view structure of the cover provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the second-view structure of the cover provided in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram illustrating the application of elastic force to the elastic element provided in an embodiment of the present invention.

[0027] Icons: 10-Dustproof rotor structure; 100-Rotor; 110-Iron core; 111-First docking part; 120-Rotating shaft; 121-Positioning block; 122-Guide surface; 200-Cover; 210-Second docking part; 220-Positioning groove; 230-Guide surface; 240-Second guide groove; 250-First guide groove; 300-Fan blade; 500-Elastic element. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0030] 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.

[0031] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0032] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0033] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0034] First Embodiment

[0035] Current power tools typically have a dustproof structure on the rotor. Installing this dustproof structure usually requires locating a locking position on the rotor's circumference, then rotating it by the corresponding angle to lock the dustproof structure into place. However, this process is complex and involves too many steps, resulting in low installation efficiency and preventing automated production.

[0036] To address the above problems, this invention provides a power tool, particularly suitable for power tools such as electric hammers. To meet dust prevention requirements during construction, the power tool includes a dustproof rotor structure that provides dust protection.

[0037] Please see Figures 1 to 5 The dustproof rotor structure 10 includes a rotor 100 and a cover 200.

[0038] The rotor 100 includes a rotating shaft 120 and an iron core 110 sleeved on the rotating shaft 120. The iron core 110 is provided with a first docking part 111. The outer wall of the rotating shaft 120 is provided with a positioning block 121. The cover 200 is provided with a second docking part 210 and a positioning groove 220. At least one of the positioning blocks 121 and the positioning groove 220 is multiple.

[0039] Optionally, there can be multiple positioning slots 220 and one positioning block 121. In this case, the positioning block 121 can be embedded in any one of the positioning slots 220 to achieve a fixed fit. Moreover, there can also be multiple positioning blocks 121, and the number of positioning blocks 121 is less than the number of positioning slots 220. As long as multiple positioning blocks 121 are embedded in their respective positioning slots 220, a fixed fit can be achieved.

[0040] In this embodiment, the number of positioning grooves 220 and positioning blocks 121 are the same, and they are arranged in a one-to-one correspondence. Multiple positioning portions are evenly arranged around the outer wall of the rotating shaft 120, and multiple positioning grooves 220 are evenly arranged around the inner wall of the cover 200. Therefore, when multiple positioning grooves 220 and multiple positioning blocks 121 cooperate one-to-one, the first docking portion 111 and the second docking portion 210 can be docked.

[0041] In this embodiment, the dustproof rotor 100 typically also includes a fan blade 300, which is circular in shape and connected to the cover 200.

[0042] By setting multiple positioning blocks 121 on the outer wall of the rotating shaft 120 and setting multiple positioning grooves 220 that match the multiple positioning blocks 121 on the cover 200, during the installation process, the multiple positioning blocks 121 can be inserted into the multiple positioning grooves 220 by simply rotating the rotating shaft 120 and the cover 200 by a small angle, thereby making the first docking part 111 and the second docking part 210 dock together, thus realizing the installation of the cover 200. The installation is convenient and efficient, and can realize automated installation.

[0043] The first docking part 111 and the second docking part 210 are both serrated. Therefore, docking is completed by the interlocking of multiple teeth of the first docking part 111 and the second docking part 210.

[0044] Furthermore, the positioning groove 220 is recessed in the inner wall of the cover 200, and the inner wall of the cover 200 is also provided with a guide surface 230 and a first guide groove 250. The guide surface 230 and the first guide groove 250 are used to restrict the multiple positioning blocks 121 in the first guide groove 250 and guide the multiple positioning blocks 121 into the multiple positioning grooves 220.

[0045] It is understood that the first guide groove 250 also keeps the axes of the rotor 100 and the cover 200 on the same straight line, thereby ensuring that the axis of the cover 200 is not skewed when the guide surface 230 restricts the positioning block 121 within the cover 200.

[0046] In this embodiment, the cover 200 has a trumpet-shaped structure, and the guide surface 230 is disposed on the inner wall surface of the cover 200. Along the axial direction of the cover 200, the positioning groove 220 is adjacent to the guide surface 230. Therefore, during the installation process, the cover 200 is first placed over the rotating shaft 120. The guide surface 230 can restrict the rotating shaft 120 within the arc surface enclosed by the guide surface 230, and make the axis of the rotating shaft 120 coincide with the axis of the cover 200 as much as possible, avoiding relative misalignment between the rotating shaft 120 and the cover 200.

[0047] In this case, by applying an axial force toward the rotor 100 and a circumferential force to rotate the cover 200, the positioning block 121 moves both circumferentially and axially along the guide surface 230. After the positioning block 121 moves to the position corresponding to the first guide groove 250, the cover 200 continues to drive the positioning block 121 axially into the first guide groove 250 under the action of the elastic member 500, and is further embedded into the positioning groove 220 under the action of external force, thereby completing the installation of the cover 200 and the rotor 100.

[0048] Furthermore, the inner wall of the cover 200 is provided with a first guide groove 250. The first guide groove 250 is adjacent to the positioning groove 220 and is arranged sequentially along the axial direction of the cover 200. The bottom wall of the first guide groove 250 forms a guide surface 230. The inner diameter of the arc surface where the guide surface 230 is located is larger than the outer diameter of the multiple positioning blocks 121 relative to the rotating shaft 120.

[0049] In this embodiment, the first guide groove 250 is arranged in a ring-shaped circumferential direction on the inner wall of the cover 200. In order to ensure that the rotating shaft 120 can smoothly enter the space where the guide surface 230 is located, the inner diameter of the arc surface where the guide surface 230 is located is larger than the outer diameter of the multiple positioning blocks 121 relative to the rotating shaft 120.

[0050] Furthermore, the inner wall of the cover 200 is also provided with a second guide groove 240, and the second guide groove 240 is recessed in the guide surface 230. The second guide groove 240 is adjacent to the positioning groove 220 and is arranged sequentially along the axial direction of the cover 200.

[0051] In this embodiment, by providing a second guide groove 240 on the guide surface 230, during the rotation of the cover 200 relative to the rotating shaft 120 under the action of the elastic member 500, when the positioning block 121 rotates circumferentially along the guide surface 230 to the second guide groove 240, at least part of the positioning block 121 is engaged in the second guide groove 240, thereby preventing the cover 200 from rotating excessively relative to the rotor 100. At this time, the rotor 100 is still moving along the axial direction under the action of the second pressure, thereby causing the positioning block 121 located in the second guide groove 240 to move axially and embed into the positioning groove 220, thereby completing the installation of the cover 200 and the rotor 100.

[0052] Furthermore, the inner diameter of the arc surface where the bottom wall of the second guide groove 240 is located is greater than the inner diameter of the arc surface where the bottom wall of the positioning groove 220 is located.

[0053] In this embodiment, the depth of the second guide groove 240 is greater than the depth of the positioning groove 220, which makes it easier for the positioning block 121 to be inserted into the second guide groove 240 during the circumferential movement along the guide surface 230, and after the positioning block 121 is inserted into the positioning groove 220, it is easier to be embedded from the second guide groove 240 into the positioning groove 220 under the action of external force.

[0054] Furthermore, with multiple positioning blocks 121 embedded in multiple positioning slots 220, the outer wall of the rotating shaft 120 is interference-fitted with the inner wall of the cover 200.

[0055] In this embodiment, when the positioning block 121 is embedded in the positioning groove 220, the outer wall of the rotating shaft 120 is interference-fitted with the inner wall of the cover 200, thereby further improving the connection stability between the cover 200 and the rotor 100 and preventing the cover 200 from falling off the rotor 100 during use.

[0056] Furthermore, the inner diameter of the inner wall of the cover 200 is smaller than the outer diameter of the arc surface where the multiple positioning blocks 121 are located.

[0057] In this embodiment, by making the inner diameter of the inner wall of the cover 200 smaller than the outer diameter of the arc surface where the positioning block 121 is located, it is ensured that the positioning block 121 will not continue to move circumferentially under external force after being embedded in the positioning groove 220, thereby preventing it from falling out of the positioning groove 220. This ensures that the positioning block 121 is stably embedded in the positioning groove 220.

[0058] Furthermore, the positioning block 121 protrudes from the outer wall of the rotating shaft 120 and extends along the axial direction of the rotating shaft 120, and the end of the positioning block 121 is also provided with a guide surface 122, which is inclined and used to guide the positioning block 121 into the positioning groove 220.

[0059] In this embodiment, by providing a protruding, strip-shaped positioning block 121 on the outer wall of the rotating shaft 120, the positioning block 121 can more easily move axially and embed itself into the positioning groove 220. Furthermore, by providing an inclined guide surface 122 at the end of the positioning block 121, the positioning block 121 can more easily engage with the guide surface 230 and the positioning groove 220 during the axial movement of the cover 200 relative to the rotating shaft 120.

[0060] Specifically, the area of ​​the guide surface 122 gradually decreases along the extension direction of the guide surface 122 to form a triangle, and the guide surface 122 is inclined on the surface facing the rotating shaft 120 to facilitate guidance.

[0061] Furthermore, this application also provides an automated pressing method applicable to the dustproof rotor structure 10 described in the above embodiments, which enables automatic installation of the dustproof rotor structure 10. The automated pressing method includes the following steps:

[0062] Step S100: Align the second docking portion 210 of the cover 200 with the first docking portion 111 of the rotor 100.

[0063] In step S200, the elastic member 500 is pressed against the cover 200 to drive the cover 200 to move and rotate toward the rotor 100, so that the positioning block 121 of the rotor 100 is aligned with the positioning groove 220 under the guidance of the first guide groove 250 and the second guide groove 240, and is embedded in the positioning groove 220 under the elastic force of the elastic member 500; and the second docking part 210 docks with the first docking part 111.

[0064] In this embodiment, during the installation process, simply rotating the rotor and the cover by a small angle allows one or more positioning blocks to be embedded in one or more positioning slots, thereby connecting the first docking part and the second docking part, thus realizing the installation of the cover. The installation is convenient and efficient, and can achieve automated installation.

[0065] Second Embodiment

[0066] Unlike the first embodiment, this embodiment also includes a fan blade 300, which is connected to the rotor 100, and the cover 200 is positioned and connected to the fan blade 300. For brevity, please refer to the corresponding content in the first embodiment for any content not mentioned in the second embodiment.

[0067] Furthermore, the fan blade 300 is provided with a positioning groove 220, a first guide groove 250, and the cover 200 is provided with a second docking part 210. There are multiple of at least one of the positioning block 121 and the positioning groove 220. The positioning block 121 is used to embed into the positioning groove 220 so that the first docking part 111 and the second docking part 210 dock together.

[0068] In this embodiment, the pressing device acts on the fan blade 300, causing the cover 200 to abut against the positioning block 121 of the rotor 100 during installation and compressively set on the elastic member 500 of the pressing device. At this time, the elastic member 500 applies an axial force to the fan blade 300 toward the rotor 100. Under these circumstances, it is only necessary to rotate the fan blade 300 so that the second guide groove 240 corresponds to the positioning block 121. After the positioning block 121 is inserted into the second guide groove 240, the fan blade 300 continues to move toward the rotor 100 under the elastic restoring force of the elastic member 500, so that the positioning block 121 enters the first guide groove 250. Furthermore, under the action of the second external force, the positioning block 121 is finally embedded in the positioning groove 220, thus completing the installation and improving the ease of installation.

[0069] In summary, the embodiments of the present invention provide a dustproof rotor structure 10 and an automated pressing method. By setting multiple positioning blocks 121 on the outer wall of the rotor 100 and setting multiple positioning grooves 220 that match the multiple positioning blocks 121 on the cover 200, during the installation process, the rotor 100 and the cover 200 only need to be rotated by a small angle to make the multiple positioning blocks 121 respectively embed into the multiple positioning grooves 220, thereby making the first docking part 111 and the second docking part 210 dock, thereby realizing the installation of the cover 200. The installation is convenient and efficient, and can realize automated installation.

[0070] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A dustproof rotor structure, characterized in that, include: The rotor includes a rotating shaft and an iron core sleeved outside the rotating shaft. The iron core is provided with a first mating part, and the outer wall of the rotating shaft is provided with a positioning block. The cover body is provided with a second docking part and a positioning groove, wherein there are multiple positioning blocks and positioning grooves, and the positioning blocks are used to embed into the positioning grooves so that the first docking part and the second docking part are docked.

2. The dustproof rotor structure according to claim 1, characterized in that, The positioning groove is recessed in the inner wall of the cover, and the inner wall of the cover is also provided with a guide surface. The guide surface is used to restrict the multiple positioning blocks within the guide surface so that the axis of the rotor and the axis of the cover are on the same straight line.

3. The dustproof rotor structure according to claim 2, characterized in that, The inner wall of the cover is provided with a first guide groove along the circumferential direction. The first guide groove is adjacent to the positioning groove and is arranged sequentially along the axial direction of the cover. The bottom wall of the first guide groove forms the guide surface. The inner diameter of the arc surface where the guide surface is located is larger than the outer diameter of the positioning block relative to the rotating shaft.

4. The dustproof rotor structure according to claim 2, characterized in that, The inner wall of the cover is also provided with a second guide groove, which is recessed in the guide surface. The second guide groove is adjacent to the positioning groove and is arranged sequentially along the axial direction of the cover.

5. The dustproof rotor structure according to claim 1, characterized in that, The inner diameter of the inner wall of the cover is smaller than the outer diameter of the positioning block relative to the rotating shaft, and when the positioning block is embedded in the positioning groove, the outer wall of the rotating shaft is interference-fitted with the inner wall of the cover.

6. The dustproof rotor structure according to claim 1, characterized in that, The number of positioning blocks and positioning grooves are both multiple, and the multiple positioning blocks and multiple positioning grooves are arranged in a one-to-one correspondence. The multiple positioning blocks are evenly arranged around the outer wall of the rotating shaft, and the multiple positioning grooves are evenly arranged around the inner wall of the cover.

7. The dustproof rotor structure according to claim 1, characterized in that, The positioning block protrudes from the outer wall of the rotating shaft and extends along the axial direction of the rotating shaft. The end of the positioning block is also provided with a guide surface, which is used to guide the positioning block into the positioning groove.

8. The dustproof rotor structure according to claim 7, characterized in that, The area of ​​the guide surface gradually decreases along its extension direction and is inclined toward the surface of the rotating shaft.

9. A dustproof rotor structure, characterized in that, The dustproof rotor structure includes a rotor, a cover and a fan blade. The rotor includes a rotating shaft and an iron core sleeved outside the rotating shaft. The iron core is provided with a first docking part, and the outer wall of the rotating shaft is provided with a positioning block. The fan blade is connected to the cover, the fan blade is provided with a positioning groove, and the cover is provided with a second docking part. The number of at least one of the positioning block and the positioning groove is multiple. The positioning block is used to embed into the positioning groove so that the first docking part and the second docking part are docked.

10. An automated pressing method, applicable to the dustproof rotor structure as described in any one of claims 1-9, characterized in that, The automated pressing method includes: Align the second docking portion of the cover with the first docking portion of the rotor; The elastic element is pressed against the cover to drive the cover to move and rotate toward the rotor, so that the positioning block of the rotor is aligned with the positioning groove in sequence under the guidance of the first guide groove and the second guide groove, and is embedded into the positioning groove under the elastic force of the elastic element; and the second docking part docks with the first docking part.

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