Grinding machine

Abstract

The utility model provides a grinding machine which comprises a shell, a power mechanism, a transmission mechanism and a grinding disc, the power mechanism and the transmission mechanism are arranged in the shell, the grinding disc is connected to the transmission mechanism, the power mechanism comprises an output shaft assembly, and the output shaft assembly comprises an output shaft, a meshing part arranged on the output shaft and a first bearing installed on the output shaft. The transmission mechanism comprises a transmission shaft assembly, the transmission shaft assembly comprises a transmission shaft, a gear and a second bearing, the gear and the second bearing are installed on the transmission shaft, the meshing part is meshed with the gear, the bearing seat is of an integrated structure and comprises a first bearing chamber and a second bearing chamber, and the first bearing is contained in the first bearing chamber. The second bearing is accommodated in the second bearing chamber.

Description

Technical Field

[0001] The present application relates to the field of electric tools, and in particular to a grinder. Background Art

[0002] In the prior art, a wall sander includes a drive assembly, a transmission assembly, and a sanding disc. The drive assembly includes an output shaft and a first gear mounted on the output shaft. The transmission assembly includes a drive shaft and a second gear mounted on the drive shaft. The first and second gears mesh, and the sanding disc is connected to the drive shaft. The wall sander also includes a first bearing and a second bearing. The first bearing is mounted on the output shaft, and the second bearing is mounted on the drive shaft. The center distance between the output shaft and the drive shaft is prone to error, which can cause improper meshing between the first and second gears, significantly shortening the lifespan of the first and second gears.

[0003] Therefore, it is necessary to provide a new wall grinding machine. Utility Model Content

[0004] The present application provides a grinder with good performance and long service life.

[0005] Specifically, the present application provides a grinder, which includes a shell, a power mechanism, a transmission mechanism and a grinding disc, the power mechanism and the transmission mechanism are arranged in the shell, the grinding disc is connected to the transmission mechanism, the power mechanism includes an output shaft assembly, the output shaft assembly includes an output shaft, an engaging portion arranged on the output shaft and a first bearing installed on the output shaft, the transmission mechanism includes a transmission shaft assembly, the transmission shaft assembly includes a transmission shaft and a gear and a second bearing installed on the transmission shaft, the engaging portion is engaged with the gear, the grinder also includes a bearing seat, the bearing seat is an integrated structure, the bearing seat includes a first bearing chamber and a second bearing chamber, the first bearing is accommodated in the first bearing chamber, and the second bearing is accommodated in the second bearing chamber.

[0006] Furthermore, the bearing seat is made of metal.

[0007] Furthermore, the bearing seat is formed by machining a metal part.

[0008] Furthermore, the engagement portion extends from the output shaft.

[0009] Furthermore, the output shaft and the transmission shaft both extend along a first direction, the output shaft and the transmission shaft are arranged in parallel, and the first bearing chamber and the second bearing chamber are arranged along a second direction, wherein the second direction is perpendicular to the first direction.

[0010] Furthermore, the engaging portion is provided with threads.

[0011] Furthermore, the bearing seat is fixed by the housing.

[0012] Furthermore, the bearing seat is arranged adjacent to the gear.

[0013] Furthermore, the grinder also includes a dust suction blade installed on the output shaft, and the bearing seat is closer to the gear than the dust suction blade.

[0014] Furthermore, the grinding disc is connected to the transmission shaft.

[0015] In this application, the bearing seat is an integrated structure, and the bearing seat is machined from metal parts. The first bearing is installed on the output shaft and accommodated in the first bearing chamber of the bearing seat, and the second bearing is installed on the transmission shaft and accommodated in the second bearing chamber of the bearing seat. With this design, the center distance between the meshing parts of the gears of the transmission mechanism and the power mechanism is highly accurate, which can ensure that the gears and the meshing parts are correctly engaged, greatly extending the life of the gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the grinding machine of this application.

[0017] Figure 2 yes Figure 1 A schematic structural diagram of part of the structure of the grinding machine shown.

[0018] Figure 3 yes Figure 2 Magnified view of the circled portion shown.

[0019] Figure 4 yes Figure 2 Exploded perspective view of part of the structure of the grinding machine shown.

[0020] Figure 5 yes Figure 4 Magnified view of the circled portion shown.

[0021] Figure 6 yes Figure 4 A further exploded perspective view of part of the structure of the grinding machine is shown.

[0022] Figure 7 yes Figure 6 Magnified view of the circled portion shown.

[0023] Figure 8 yes Figure 6 Schematic diagram of the structure of the bearing seat shown.

[0024] Figure 9 yes Figure 8 A structural diagram of the bearing seat shown in another perspective. DETAILED DESCRIPTION

[0025] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different drawings represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with this application.

[0026] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the same ordinary meaning as those of ordinary skill in the art to which this invention belongs. The terms "first," "second," and similar terms used in this application do not denote any order, quantity, or importance, but are simply used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a limitation of quantity, but rather indicate the presence of at least one. "Multiple" or "several" means two or more. Unless otherwise indicated, terms such as "front," "rear," "lower," and / or "upper" are for convenience only and are not intended to limit a position or spatial orientation. Terms such as "include" or "comprising" mean that the elements or objects listed before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. Terms such as "connected" or "connected" are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "an," "said," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0027] Please combine Figures 1 to 9The present application provides a grinding machine 100, which includes a housing 10, a power mechanism 20, a transmission mechanism 30, and a grinding disc. The power mechanism 20 and the transmission mechanism 30 are disposed in the housing 10, and the grinding disc is connected to the transmission mechanism 30. The power mechanism 20 drives the grinding disc through the transmission mechanism 30. The power mechanism 20 includes an output shaft assembly, which includes an output shaft 211, an engaging portion 212 disposed on the output shaft 211, and a first bearing 213 mounted on the output shaft 211. The transmission mechanism 30 includes a transmission shaft assembly, which includes a transmission shaft 311, a gear 312 mounted on the transmission shaft 311, and a second bearing 313. The gear 312 meshes with the engaging portion 212. The grinder 100 also includes a bearing seat 50. The bearing seat 50 is an integrated structure. The bearing seat 50 includes a first bearing chamber 51 and a second bearing chamber 52. The first bearing 213 is mounted on the output shaft 211 and accommodated in the first bearing chamber 51. The second bearing 313 is mounted on the transmission shaft 311 and accommodated in the second bearing chamber 52. The bearing seat 50 is fixed by the housing 10. The bearing seat 50 is made of metal. Specifically, the bearing seat 50 is machined from a metal part. The grinding disc is connected to the transmission shaft 311. In this embodiment, the output shaft 211 is a motor shaft, and the meshing portion 212 extends from the output shaft 211. The meshing portion 212 is integrally arranged with the output shaft 211, and the meshing portion 212 is provided with a thread; in other embodiments, the meshing portion 212 may also be a gear mounted on the output shaft 211.

[0028] The output shaft 211 and the transmission shaft 311 both extend along the first direction X. The output shaft 211 and the transmission shaft 311 are arranged in parallel. The first bearing chamber 51 and the second bearing chamber 52 are arranged along the second direction Y, wherein the second direction Y is perpendicular to the first direction X.

[0029] The bearing seat 50 is disposed adjacent to the gear 312. The grinding machine 100 further includes a dust suction blade 60 mounted on the output shaft 211. The bearing seat 50 is closer to the gear 312 than the dust suction blade 60.

[0030] In the present application, the bearing seat 50 is an integrated structure, and the bearing seat 50 is machined from metal parts. The first bearing 213 is installed on the output shaft 211 and accommodated in the first bearing chamber 51 of the bearing seat 50. The second bearing 313 is installed on the transmission shaft 311 and accommodated in the second bearing chamber 52 of the bearing seat 50. With this design, the center distance between the gear 312 of the transmission mechanism 30 and the meshing part 212 of the power mechanism 20 has high accuracy, which can ensure that the gear 312 and the meshing part 212 are correctly engaged, thereby greatly extending the life of the gear 312.

[0031] The above description is merely a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with this profession can make slight changes or modifications to equivalent embodiments with equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A grinder, comprising a housing, a power mechanism, a transmission mechanism, and a grinding disc, wherein the power mechanism and the transmission mechanism are arranged in the housing, the grinding disc is connected to the transmission mechanism, the power mechanism comprises an output shaft assembly, the output shaft assembly comprises an output shaft, an engaging portion arranged on the output shaft, and a first bearing mounted on the output shaft, the transmission mechanism comprises a transmission shaft assembly, the transmission shaft assembly comprises a transmission shaft and a gear mounted on the transmission shaft and a second bearing, the engaging portion meshes with the gear, and is characterized in that: The grinder also includes a bearing seat, which is an integrated structure. The bearing seat includes a first bearing chamber and a second bearing chamber. The first bearing is accommodated in the first bearing chamber, and the second bearing is accommodated in the second bearing chamber.

2. The grinding machine according to claim 1, characterized in that The bearing seat is made of metal.

3. The grinding machine according to claim 2, characterized in that The bearing seat is formed by machining a metal part.

4. The grinding machine according to claim 1, characterized in that The engaging portion extends from the output shaft.

5. The grinding machine according to claim 1, characterized in that The output shaft and the transmission shaft both extend along a first direction, the output shaft and the transmission shaft are arranged in parallel, the first bearing chamber and the second bearing chamber are arranged along a second direction, wherein the second direction is perpendicular to the first direction.

6. The grinding machine according to claim 1, characterized in that The engaging portion is provided with threads.

7. The grinding machine according to claim 1, characterized in that The bearing seat is fixed by the housing.

8. The grinding machine according to claim 1, characterized in that The bearing seat is disposed adjacent to the gear.

9. The grinding machine according to claim 1, characterized in that The grinder further includes a dust suction blade mounted on the output shaft, and the bearing seat is closer to the gear than the dust suction blade.

10. The grinding machine according to claim 1, characterized in that The grinding disc is connected to the transmission shaft.

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