Handheld electric tool

Abstract

A handheld electric tool comprises a machine shell which comprises a first holding part and a main machine shell, and the first holding part is detachably connected with the main machine shell; the motor is arranged in the main machine shell and used for providing a power source, and the motor comprises a motor shaft rotating around the axis of the motor; the battery pack is electrically connected with the motor; the main case comprises a main body part and a connecting part extending from the main body part, the first holding part is in threaded connection with the connecting part, the handheld electric tool further comprises an elastic piece, the elastic piece is arranged between the connecting part and the first holding part, and the elastic piece is arranged between the connecting part and the first holding part. The connecting part is configured to compress the elastic piece so as to provide locking force between the connecting part and the first holding part, the connecting part comprises a stop part, and the stop part is configured to determine the final position of the first holding part after the first holding part is rotated through the threads.

Description

Technical Field

[0001] The utility model relates to the field of electric tools, in particular to a handheld electric tool. Background Art

[0002] In recent years, sanders have become a common power tool in the field of power tools, often used to polish the surfaces of wood products. A sander primarily consists of a motor, a transmission assembly, and a base plate. The transmission assembly at least drives the base plate in eccentric motion. Sandpaper or other polishing elements are mounted on the lower surface of the base plate, which moves with the base plate to polish and polish the surface being processed.

[0003] Currently, lithium-ion flat sanders are widely used for polishing walls and floors. They consist of a motor, a work chassis, and sandpaper attached to the bottom of the work chassis. The motor drives the work chassis to rotate around a shaft, and the sandpaper polishes the workpiece surface as the work chassis rotates, smoothing the workpiece surface. Existing sanding machines generally have two types of fixing structures for the auxiliary handle and housing. One is fixed via a conventional threaded structure, and the positioning surface is controlled by the end face of the auxiliary handle. Due to product dimensional tolerances and the different torques applied by different users, it is impossible to accurately control the final phase angle of the auxiliary handle, making it impossible to shape the auxiliary handle into a special shape that fits the palm of the hand. The second method is to first fix the auxiliary handle to the housing and then tighten it with screws. Because the auxiliary handle needs to be frequently disassembled to adapt to different working scenarios, this operation makes disassembly inconvenient and unstable, greatly affecting work efficiency and causing great trouble for users. Utility Model Content

[0004] The purpose of this application is to overcome the shortcomings of the existing technology by providing an elastic member between the auxiliary handle and the housing. When the auxiliary handle and the housing are connected, the elastic member is compressed to provide a locking force, thereby providing a handheld power tool that is more convenient to disassemble. This utility model is achieved through the following technical solutions:

[0005] A handheld power tool comprises a housing, the housing comprising a first grip and a main housing, the first grip being detachably connected to the main housing; the handheld power tool comprises a motor disposed in the main housing for providing a power source, the motor comprising a motor shaft rotating around a motor axis; the handheld power tool comprises a battery pack, the battery pack being electrically connected to the motor; the main housing comprises a main body and a connecting portion extending from the main body, the first grip being threadedly connected to the connecting portion, the handheld power tool further comprising an elastic member disposed between the connecting portion and the first grip, the connecting portion being configured to compress the elastic member to provide a locking force between the connecting portion and the first grip.

[0006] Furthermore, the connecting portion includes a stop portion, which is configured to determine the final position of the first gripping portion after being rotated through the thread. When the first gripping portion moves to the stop portion, the first gripping portion stops moving.

[0007] Furthermore, the stop portion is located at one end of the thread close to the main body.

[0008] Furthermore, the elastic member is sleeved on an end of the connecting portion away from the main body portion, and the elastic member is located between the connecting portion and the first gripping portion.

[0009] Furthermore, the elastic member includes a rubber ring or a spring, and when the first gripping portion moves to the stop portion, the elastic member is compressed to provide a locking force between the connecting portion and the first gripping portion.

[0010] Furthermore, the handheld power tool includes a base plate, which is used to connect sandpaper, and the motor is located between the battery pack and the base plate.

[0011] Furthermore, the first gripping portion includes a supporting surface. When the first gripping portion is rotated to the stop portion through a thread, the supporting surface faces away from the base plate. The supporting surface is raised away from the base plate to fit the shape of the user's palm and improve grip comfort.

[0012] Furthermore, the handheld power tool includes a battery pack coupling portion, which is used to detachably couple the battery pack to the housing.

[0013] Furthermore, the battery pack coupling portion is located on the surface of the casing.

[0014] Furthermore, the handheld power tool further includes a second gripping portion, and the first gripping portion and the second gripping portion can be operated simultaneously by an operator to use the handheld power tool.

[0015] The handheld power tool includes an elastic member disposed between the connecting portion and the first grip. The connecting portion is configured to compress the elastic member to provide a locking force between the connecting portion and the first grip. The first grip can be removed by rotating the first grip in the opposite direction. A threaded stop is provided on the connecting portion. When the first grip reaches the stop, the first grip stops moving. The supporting surface of the first grip faces away from the base plate. The supporting surface is raised away from the base plate to fit the user's palm, improving grip comfort. This provides a more convenient handheld power tool, making operation more convenient and greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of a handheld power tool according to one embodiment of the present application.

[0017] Figure 2 for Figure 1 Another perspective view of the handheld power tool shown.

[0018] Figure 3 for Figure 1 A cross-sectional view of the handheld power tool is shown.

[0019] Figure 4 for Figure 2 An enlarged view of the connection portion of the handheld power tool is shown. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] Combine Figures 1 to 3, a handheld power tool (in this embodiment, a sander is taken as an example), including a housing 100, the housing 100 including a first gripping portion 101 and a main housing 102, the first gripping portion 101 being detachably connected to the main housing 102; the handheld power tool includes a motor 103 arranged in the main housing 102 for providing a power source, the motor 103 including a motor shaft 104 rotating around the axis of the motor 103; the handheld power tool includes a battery pack 105, the battery pack 105 being electrically connected to the motor 103; the main housing 102 includes a main body 1 and a connecting portion 2 extending from the main body 1, the first gripping portion 101 and the connecting portion 2 are connected by a thread 3, the handheld power tool also includes an elastic member 4, the elastic member 4 is arranged between the connecting portion 2 and the first gripping portion 101, the connecting portion 2 is configured to compress the elastic member 4 to provide a locking force between the connecting portion 2 and the first gripping portion 101.

[0023] Preferably, the connecting portion 2 includes a stop portion 5, which is configured to determine the final position of the first gripping portion 101 after rotating through the thread 3. When the first gripping portion 101 moves to the stop portion 5, the first gripping portion 101 stops moving. The stop portion 5 is located at one end of the thread 3 close to the main body 1.

[0024] The elastic member 4 is sleeved on an end of the connecting portion 2 away from the main body 1 , and the elastic member 4 is located between the connecting portion 2 and the first gripping portion 101 .

[0025] Preferably, the elastic member 4 includes a rubber ring or a spring. When the first gripping portion 101 moves to the stop portion 5 , the elastic member 4 is compressed to provide a locking force between the connecting portion 2 and the first gripping portion 101 .

[0026] The handheld power tool includes a base plate 6 , which is used to connect sandpaper. The motor 103 is located between the battery pack 105 and the base plate 6 .

[0027] Preferably, the first gripping portion 101 includes a supporting surface 7. When the first gripping portion 101 is rotated to the stop portion 5 through the thread 3, the supporting surface 7 faces away from the base plate 6. The supporting surface 7 is raised away from the base plate 6 to fit the shape of the user's palm and improve the comfort of grip.

[0028] The handheld power tool includes a battery pack coupling portion 8, which is used to detachably couple the battery pack 105 to the housing 100. The battery pack coupling portion 8 is located on a surface of the housing 100. The handheld power tool also includes a second grip portion 9. The first grip portion 101 and the second grip portion 9 can be operated simultaneously by an operator to use the handheld power tool.

[0029] The handheld power tool includes an elastic member 4, which is disposed between the connecting portion 2 and the first grip portion 101. The connecting portion 2 is configured to compress the elastic member 4 to provide a locking force between the connecting portion 2 and the first grip portion 101. The first grip portion 101 can be removed by rotating the first grip portion 101 in the opposite direction. A threaded stop portion 5 is provided on the connecting portion 2. When the first grip portion 101 moves to the stop portion 5, the first grip portion 101 stops moving. The support surface 7 of the first grip portion 101 faces away from the base plate 6. The support surface 7 is raised away from the base plate 6 to fit the shape of the user's palm, improving grip comfort and providing a more convenient handheld power tool that is easier to operate and greatly improves work efficiency.

[0030] It should be understood that the drawings illustrate exemplary embodiments in detail, and it should be understood that the present application is not limited to the details or methods set forth in the specification or illustrated in the drawings. It should also be understood that the terminology is for descriptive purposes only and should not be considered as limiting.

[0031] In view of this specification, further modifications and alternative embodiments of various aspects of the present invention will be obvious to those skilled in the art. Therefore, this description should be interpreted as being illustrative only. The configurations and arrangements shown in the various exemplary embodiments are illustrative only. Although only some embodiments are described in detail in this disclosure, many modifications (for example, variations in the size, dimensions, structure, shape and proportion of various elements, the value of parameters, the installation arrangement, the use of materials, colors, orientations, etc.) can be made without substantially departing from the novel teachings and advantages of the subject matter described herein. Some elements shown as being integrally formed can be constructed from multiple parts or elements, can be reversed or otherwise changed in the position of the elements, and the nature or number or position of discrete elements can be changed or varied. According to alternative embodiments, the order or sequence of any process, logical algorithm or method steps can be changed or reordered. Other replacements, modifications, changes and omissions can also be made to the design, operating conditions and arrangement of the various exemplary embodiments without departing from the scope of the present invention.

[0032] Although the present application recites particular combinations of features in the appended claims, various embodiments of the present invention relate to any combination of any of the features described herein, whether or not such combinations are currently claimed, and any such combination of features may be claimed in this application or in a future application. Any feature, element, or component of any exemplary embodiment discussed above may be used alone or in combination with any feature, element, or component of any other embodiment discussed above.

[0033] In various exemplary embodiments, relative dimensions, including angles, lengths, and radii, as shown in the accompanying drawings are drawn to scale. Actual measurements of the accompanying drawings would disclose the relative dimensions, angles, and ratios of the various exemplary embodiments. The various exemplary embodiments extend to various ranges encompassing absolute and relative dimensions, angles, and ratios that can be determined from the accompanying drawings. Various exemplary embodiments include any combination of one or more relative dimensions or angles that can be determined from the accompanying drawings. In addition, actual dimensions not expressly stated in this specification can be determined by combining the ratios of the dimensions measured in the accompanying drawings with the explicit dimensions stated in this specification.

Claims

1. A handheld power tool comprising: The housing comprises a first grip portion and a main housing, wherein the first grip portion is detachably connected to the main housing; a motor, disposed in the main housing, for providing a power source, the motor comprising a motor shaft rotating around a motor axis; a battery pack, electrically connected to the motor; The main housing comprises a main body and a connecting portion extending from the main body, the first gripping portion is connected to the connecting portion by a thread, the handheld power tool further comprises an elastic member, the elastic member is disposed between the connecting portion and the first gripping portion, and the connecting portion is configured to compress the elastic member to provide a locking force between the connecting portion and the first gripping portion; The connecting portion includes a stop portion configured to determine a final position of the first grip portion after being rotated through the thread.

2. The handheld power tool according to claim 1, wherein: The stop portion is located at one end of the thread close to the main body.

3. The handheld power tool according to claim 1, wherein: The elastic member is sleeved on an end of the connecting portion away from the main body portion.

4. The handheld power tool according to claim 2, wherein: The elastic member includes a rubber ring or a spring.

5. The handheld power tool according to claim 4, wherein: The handheld power tool includes a base plate, which is used to connect sandpaper, and the motor is located between the battery pack and the base plate.

6. The handheld power tool according to claim 5, wherein: The first gripping portion includes a supporting surface. When the first gripping portion is rotated to the stop portion through the thread, the supporting surface faces away from the bottom plate.

7. The handheld power tool according to claim 6, wherein: The handheld power tool includes a battery pack coupling portion, which is used to detachably couple the battery pack to the housing.

8. The handheld power tool according to claim 7, wherein: The battery pack coupling portion is located on the surface of the housing.

9. The handheld power tool according to claim 1, wherein: The handheld power tool further includes a second gripping portion, and the first gripping portion and the second gripping portion can be operated simultaneously by an operator to use the handheld power tool.

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