Multistage damping electric tool

Abstract

The utility model belongs to the technical field of electric tools, and particularly relates to a multi-stage damping electric tool. The multi-stage damping electric tool comprises a tool body, a handle shell and a damping assembly. The tool body comprises a body shell and an electric component arranged in the body shell. The handle housing is connected to the main body housing. The damping assembly is arranged in the handle shell and comprises a first elastic body and a second elastic body, the first elastic body is connected to the bottom of the body shell, the second elastic body is connected to the first elastic body, and the elastic coefficient of the second elastic body is smaller than that of the first elastic body. By means of the multi-stage damping electric tool in the technical scheme, when an operator holds the handle shell to conduct drilling or hammering or other operation, vibration borne by the operator is greatly reduced, and therefore fatigue and damage are not prone to being generated.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric tools, and in particular relates to a multi-stage shock-absorbing electric tool. Background Art

[0002] Multi-stage vibration-damping power tools are commonly used in manufacturing. There are many types of multi-stage vibration-damping power tools, and they are widely used. For example, an electric wrench is a multi-stage vibration-damping power tool that can automatically control torque. It is suitable for projects that require high-strength bolt connections, such as bridge structures, large steel towers, steel structure workshops, metallurgical equipment frames, large crane racks, mine steel frames, and large diesel engines, power generation equipment, and chemical equipment. Bolts that require constant clamping force can also be tightened with a constant torque wrench. Multi-stage vibration-damping power tools also include electric drills for drilling holes in hard materials such as concrete and stone, electric hammers for drilling holes in hard materials such as concrete, floor slabs, brick walls, and stone, and electric saws for cutting materials such as wood, metal, and plastic.

[0003] When using existing multi-stage shock-absorbing power tools, since their outer shell is in contact with the internal impact structure, when reciprocating impact occurs, the residual energy will be converted into kinetic energy of mechanical vibration. When the user uses it, the hand will be subjected to the impact force, feeling uncomfortable, and prone to fatigue after long-term use. In order to reduce the damage and discomfort caused by vibration to the human body, it is urgent to design an impact wrench structure that changes the user's working conditions. Utility Model Content

[0004] The purpose of this utility model is to at least solve the problem of large impact vibrations on the human body caused by multi-stage shock-absorbing power tools. This purpose is achieved through the following technical solutions:

[0005] The first aspect of the present invention provides a multi-stage vibration reduction electric tool, comprising:

[0006] The tool body comprises a main body shell and an electric component arranged inside the main body shell;

[0007] a handle housing connected to the main body housing;

[0008] A shock absorbing assembly is arranged inside the handle shell, and the shock absorbing assembly includes a first elastomer and a second elastomer, the first elastomer is connected to the main shell, the second elastomer is connected to the first elastomer, and the elastic coefficient of the second elastomer is smaller than the elastic coefficient of the first elastomer.

[0009] In the above technical solution, by connecting the shock-absorbing assembly and the main body shell, the vibration generated by the electric component during operation will be transmitted to the shock-absorbing assembly and absorbed by the shock-absorbing assembly, thereby making the overall structure more stable. Since the shock-absorbing assembly includes a first elastomer and a second elastomer with different elastic coefficients, the vibration generated by the electric component will be absorbed step by step by the first elastomer and the second elastomer. When the vibration level is relatively low, the vibration will be absorbed by the first elastomer. When the vibration level increases to a certain level, the ability of the first elastomer to absorb vibration reaches its limit. At this time, the vibration will continue to be transmitted to the second elastomer, and the vibration that cannot be absorbed by the first elastomer will be absorbed into the second elastomer, thereby reducing the vibration sense transmitted to the handle shell. Therefore, when the operator holds the handle shell to perform operations such as drilling or hammering, the vibration will be greatly reduced, making it less likely to cause fatigue and damage.

[0010] In addition, the multi-stage shock-absorbing electric tool of the present invention may also have the following additional technical features:

[0011] In some embodiments of the present invention, a connecting piece is connected to the inner wall of the handle housing, and the connecting piece passes through the first elastomer and the second elastomer.

[0012] In some embodiments of the present invention, the first elastic body includes a connecting piece and an extending piece, the extending piece is connected to the connecting piece, the connecting piece is connected to the main body shell, and the second elastic body is connected to the extending piece.

[0013] In some embodiments of the present invention, the shock absorbing assembly includes a fixed block connected to the main shell, the connecting piece is connected to a side of the fixed block away from the main shell, and the extending piece is located on the side of the fixed block.

[0014] In some embodiments of the present invention, the shock absorbing assembly further includes a connecting bolt, which passes through the connecting plate and the fixing block and is connected to the main body shell.

[0015] In some embodiments of the present invention, there are two extension pieces, which are respectively connected to opposite sides of the connecting piece, and the two extension pieces are symmetrically arranged about the axis of the tool body, and the fixing block is located between the two extension pieces.

[0016] In some embodiments of the present invention, a first connecting hole is provided on the first elastic body, and the second elastic body is inserted into the first connecting hole.

[0017] In some embodiments of the present invention, the second elastomer includes a shock-absorbing pad and a connecting portion, the connecting portion is connected to the shock-absorbing pad, the connecting portion is inserted into the first connecting hole, and the shock-absorbing pad is in contact with the first elastomer on one side facing the first elastomer.

[0018] In some embodiments of the present invention, the first elastic body is a metal sheet or a nylon sheet.

[0019] In some embodiments of the present invention, the second elastic body is a rubber block or a plastic block. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0021] Figure 1 The following schematically shows a structural diagram of a multi-stage vibration-absorbing power tool according to an embodiment of the present utility model;

[0022] Figure 2 Schematically shows a partial structural diagram of a multi-stage vibration-absorbing power tool according to an embodiment of the present utility model;

[0023] Figure 3 yes Figure 2 Schematic diagram of the local structure at A in the middle;

[0024] Figure 4 Schematically shows a partial structural diagram of a handle housing according to an embodiment of the present utility model;

[0025] Figure 5 Schematically shows a structural diagram of a first elastic body according to an embodiment of the present utility model;

[0026] Figure 6 The schematic structural diagram of the second elastic body according to the embodiment of the present utility model is schematically shown.

[0027] The reference numerals in the accompanying drawings represent the following:

[0028] 100. Tool body; 110. Main body shell;

[0029] 200, handle housing; 210, connector; 220, switch button;

[0030] 300, shock-absorbing assembly; 310, first elastic body; 311, connecting piece; 312, extending piece; 313, first through hole; 314, first connecting hole; 320, second elastic body; 321, shock-absorbing pad; 322, connecting portion; 333, second connecting hole; 330, fixing block; 340, connecting bolt;

[0031] 400. Battery pack. DETAILED DESCRIPTION

[0032] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0033] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0034] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0035] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped over, an element described as "below" or "beneath" another element or feature would then be oriented "above" or "above" the other element or feature. Thus, the example term "below" can encompass both above and below orientations.

[0036] Figure 1 The structure diagram of the multi-stage vibration-absorbing power tool according to the embodiment of the present utility model is schematically shown. Figure 2 The partial structural diagram of the multi-stage vibration-absorbing power tool according to the embodiment of the present utility model is schematically shown. Figure 3 yes Figure 2 A partial enlarged view of the middle A. Figures 1 to 3 As shown, the utility model proposes a multi-stage shock-absorbing electric tool, including a tool body 100, a handle housing 200 and a shock-absorbing assembly 300. The tool body 100 includes a main body housing 110 and an electric component arranged inside the main body housing 110. The handle housing 200 is connected to the main body housing 110. The shock-absorbing assembly 300 is arranged inside the handle housing 200, and the shock-absorbing assembly 300 includes a first elastomer 310 and a second elastomer 320. The first elastomer 310 is connected to the bottom of the main body housing 110, and the second elastomer 320 is connected to the first elastomer 310. The elastic coefficient of the second elastomer 320 is smaller than the elastic coefficient of the first elastomer 310.

[0037] In the above technical solution, by connecting the shock-absorbing assembly 300 to the main housing 110, vibrations generated by the electric components during operation are transmitted to the shock-absorbing assembly 300 and absorbed by it, thereby enhancing the overall structural stability. Because the shock-absorbing assembly 300 includes a first elastic body 310 and a second elastic body 320 with different elastic coefficients, the vibrations generated by the electric components are gradually absorbed by the first and second elastic bodies 310, 320. When the vibration level is low, the vibration is absorbed by the first elastic body 310. When the vibration level increases to a certain level, the first elastic body 310 reaches its limit of vibration absorption. At this point, the vibration will continue to be transmitted to the second elastic body 320, absorbing the vibration that the first elastic body 310 cannot absorb. This absorbs the vibration within the second elastic body 320, thereby reducing the vibration sensation transmitted to the handle housing 200. Therefore, when the operator holds the handle housing 200 for operations such as drilling or hammering, the vibrations they experience are significantly reduced, thus reducing fatigue and injury.

[0038] In this embodiment, the handle housing 200 is located at the bottom of the tool body 100, making it convenient for the operator to hold the tool in hand. Optionally, a switch button 220 is provided on the handle housing 200 for activating the electric components. A battery pack 400 is located at the bottom of the handle housing 200 to power the electric components.

[0039] Furthermore, Figure 4 Schematically shows a partial structural diagram of the handle housing 200 according to an embodiment of the present utility model. Figure 4 , the inner wall of the handle housing 200 is connected with a connector 210, and the connector 210 passes through the first elastomer 310 and the second elastomer 320. By using the connector 210 to connect the first elastomer 310 and the second elastomer 320 to the handle housing 200, the stability of the structure can be increased. Optionally, the connector 210 is rod-shaped. Optionally, the handle housing 200 includes a first shell and a second shell, and the first shell and the second shell are arranged symmetrically. In one embodiment, the connector 210 and the first shell are integrally formed. During assembly, the first elastomer 310 and the second elastomer 320 are passed through the connector 210, and then the second shell and the first shell are connected. In another embodiment, the connector 210 and the handle housing 200 are split. During assembly, the connector 210 is used to pass through the first elastomer 310 and the second elastomer 320, and then the first shell and the second shell are connected to both ends of the connector 210.

[0040] Furthermore, the first elastic body 310 includes a connecting piece 311 and an extension piece 312. The extension piece 312 is connected to the connecting piece 311, and the connecting piece 311 is connected to the main housing 110. The second elastic body 320 is connected to the extension piece 312. Optionally, the extension piece 312 and the connecting piece 311 are connected at an angle. The connector 210 is provided through the second elastic body 320 and the extension piece 312. The provision of the extension piece 312 increases the area of ​​the first elastic body 310, thereby enhancing the vibration absorption effect, and the extension piece 312 provides support for the first elastic body 310.

[0041] Optionally, the first elastic body 310 may be a metal sheet or a nylon sheet, for example, a steel sheet, an iron sheet, or an aluminum sheet. Using metal or nylon as the material for the first elastic body 310 provides good shock absorption, effectively reducing the impact of vibration on the human body and alleviating human discomfort.

[0042] Furthermore, the shock-absorbing assembly 300 includes a fixed block 330, which is connected to the main housing 110. The connecting piece 311 is connected to the side of the fixed block 330 facing away from the main housing 110. The extension piece 312 is located on the side of the fixed block 330. The fixed block 330 is used to connect the first elastic body 310 and the main housing 110, so that the vibration generated by the electric component can be transmitted to the first elastic body 310 through the fixed block 330. Optionally, the fixed block 330 can have a rectangular parallelepiped structure or a cube structure, etc., which is not specifically limited here. In this embodiment, the fixed block 330 is connected to the bottom of the main housing 110, and the connecting piece 311 is connected to the bottom of the fixed block 330. The extension piece 312 is located on the side of the fixed block 330, that is, the side of the extension piece 312 away from the connecting piece 311 extends toward the main housing 110. Optionally, the side of the extension piece 312 away from the connecting piece 311 can contact the main housing 110, thereby directly absorbing the vibration generated by the electric component.

[0043] Furthermore, the shock absorber assembly 300 also includes a connecting bolt 340, which passes through the connecting piece 311 and the fixing block 330 and is connected to the main housing 110. In this embodiment, the connecting piece 311 is provided with a first through hole 313, the fixing block 330 is provided with a second through hole, and the main housing 110 is provided with a third through hole. The connecting bolt 340 passes through the first through hole 313, the second through hole, and the third through hole in sequence and is tightened with a nut. In another embodiment, the fixing block 330 is provided with a threaded hole, and the connecting bolt 340 passes through the connecting piece 311 and the threaded hole to be threadedly connected. The fixing block 330 is connected to the main housing 110 by welding or bonding.

[0044] Furthermore, two extension pieces 312 are provided, and the two extension pieces 312 are respectively connected to opposite sides of the connecting piece 311. The two extension pieces 312 are symmetrically arranged about the axis of the tool body 100, and the fixing block 330 is located between the two extension pieces 312. Optionally, a second elastic body 320 is connected to each extension piece 312, so as to make the shock absorption effect more uniform and effective.

[0045] Optionally, the extension piece 312 is a curved sheet structure. For example, the extension piece 312 can be S-shaped, arc-shaped, or wavy. It is understood that a curved elastic sheet can better deform when subjected to pressure, and can better disperse and absorb impact force during the shock absorption process, thereby improving the shock absorption effect.

[0046] Further, Figure 5 The schematic structural diagram of the first elastic body 310 according to the embodiment of the present utility model is schematically shown. Figure 6 The schematic diagram of the structure of the second elastic body 320 according to the embodiment of the present invention is shown schematically. Figure 5 and Figure 6 The first elastic body 310 is provided with a first connection hole 314, and the second elastic body 320 is inserted into the first connection hole 314. By inserting and connecting the second elastic body 320 into the first connection hole 314, a stable connection between the second elastic body 320 and the first elastic body 310 can be achieved, and the vibration on the first elastic body 310 can be effectively transmitted to the second elastic body 320. Of course, in other embodiments, the second elastic body 320 can also be bonded to the surface of the first elastic body 310 by bonding. Optionally, a second connection hole 333 is provided on the second elastic body 320, and the second connection hole 333 is used to pass the connector 210.

[0047] Furthermore, the second elastic body 320 includes a shock-absorbing pad 321 and a connecting portion 322. The connecting portion 322 is connected to the shock-absorbing pad 321, and the connecting portion 322 is inserted into the first connecting hole 314. The side of the shock-absorbing pad 321 facing the first elastic body 310 contacts the first elastic body 310. Optionally, the connecting portion 322 is cylindrical, and correspondingly, the first connecting hole 314 is a circular hole. It can be understood that the shape of the surface where the shock-absorbing pad 321 and the first elastic body 310 contact each other is set according to the shape of the first elastic body 310, so that there is a large contact area between the shock-absorbing pad 321 and the first elastic body 310, ensuring that the vibration of the first elastic body 310 can be transmitted to the second elastic body 320 as much as possible.

[0048] Optionally, the second elastic body 320 is a rubber or plastic block. Using rubber or plastic as the material for the second elastic body 320 provides good shock absorption. Of course, the second elastic body 320 may also be made of other materials, as long as the elastic coefficient of the second elastic body 320 is less than the elastic coefficient of the first elastic body 310.

[0049] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A multi-stage shock-absorbing electric tool, characterized in that: include: A tool body (100) includes a main body shell (110) and an electric component arranged inside the main body shell (110); A handle housing (200), the handle housing (200) being connected to the main body housing (110); A shock absorbing assembly (300) is provided inside the handle housing (200), and the shock absorbing assembly (300) comprises a first elastomer (310) and a second elastomer (320), wherein the first elastomer (310) is connected to the main housing (110), and the second elastomer (320) is connected to the first elastomer (310), and the elastic coefficient of the second elastomer (320) is smaller than the elastic coefficient of the first elastomer (310).

2. The multi-stage vibration-absorbing power tool according to claim 1, characterized in that: The inner wall of the handle housing (200) is connected to a connecting piece (210), and the connecting piece (210) passes through the first elastic body (310) and the second elastic body (320).

3. The multi-stage vibration-absorbing power tool according to claim 1, characterized in that: The first elastic body (310) includes a connecting piece (311) and an extension piece (312), the extension piece (312) is connected to the connecting piece (311), the connecting piece (311) is connected to the main body shell (110), and the second elastic body (320) is connected to the extension piece (312).

4. The multi-stage vibration-absorbing power tool according to claim 3, characterized in that: The shock absorbing assembly (300) comprises a fixing block (330), the fixing block (330) being connected to the main body shell (110), the connecting piece (311) being connected to a side of the fixing block (330) facing away from the main body shell (110), and the extending piece (312) being located on a side of the fixing block (330).

5. The multi-stage vibration-absorbing electric tool according to claim 4, characterized in that: The shock absorbing assembly (300) further includes a connecting bolt (340), wherein the connecting bolt (340) passes through the connecting piece (311) and the fixing block (330) and is connected to the main body shell (110).

6. The multi-stage vibration-absorbing electric tool according to claim 4, characterized in that: Two extension pieces (312) are provided, and the two extension pieces (312) are respectively connected to opposite sides of the connecting piece (311), and the two extension pieces (312) are symmetrically arranged about the axis of the tool body (100), and the fixing block (330) is located between the two extension pieces (312).

7. The multi-stage vibration-absorbing power tool according to claim 1, characterized in that: The first elastic body (310) is provided with a first connection hole (314), and the second elastic body (320) is inserted into the first connection hole (314).

8. The multi-stage vibration-absorbing electric tool according to claim 7, characterized in that: The second elastic body (320) includes a shock-absorbing pad (321) and a connecting portion (322), wherein the connecting portion (322) is connected to the shock-absorbing pad (321), the connecting portion (322) is plugged into the first connecting hole (314), and the shock-absorbing pad (321) contacts the first elastic body (310) with one side facing the first elastic body (310).

9. The multi-stage vibration-absorbing electric tool according to any one of claims 1 to 8, characterized in that: The first elastic body (310) is a metal sheet or a nylon sheet.

10. The multi-stage vibration-absorbing electric tool according to any one of claims 1 to 8, characterized in that: The second elastic body (320) is a rubber block or a plastic block.

Images