Power wrench

Abstract

The utility model discloses a power wrench. The power wrench comprises a handle, a first elastic body, a second elastic body, a shell assembly and a driving mechanism. The handle is suitable for being held, and a mounting cavity is defined by the handle. The first elastic body is at least partially arranged in the mounting cavity, and the first elastic body is configured to deform under extrusion. At least part of the second elastic body is arranged in the installation cavity, and the second elastic body is configured to deform under extrusion. The shell assembly is connected with the handle in a relative movement mode, the shell assembly is provided with a first position and a second position relative to the handle, the shell assembly located at the first position extrudes the first elastic body, and the shell assembly located at the second position extrudes the first elastic body and the second elastic body; the driving mechanism is arranged in the shell assembly. The power wrench provided by the utility model has higher vibration reduction performance when the vibration and the impact force are larger.

Description

Technical Field

[0001] The utility model relates to the technical field of threaded piece operation equipment, in particular to a power wrench. Background Art

[0002] When the electric wrench is working, it will generate vibration and impact force, which will cause the user's hand to bear the impact force of the electric wrench, causing discomfort to the user. In addition, long-term use of the electric wrench will easily cause fatigue. For this reason, the electric wrench in the related art is provided with a shock-absorbing structure.

[0003] However, the electric wrench in the related art has poor shock absorption performance when the vibration and impact force are large. Utility Model Content

[0004] The purpose of the present invention is to at least solve the problem of poor shock absorption performance of electric wrenches in the related art when vibration and impact force are large. This purpose is achieved by the following means:

[0005] The utility model proposes a power wrench, comprising a handle, a first elastomer, a second elastomer, a shell assembly and a drive mechanism. The handle is suitable for being held, and the handle defines a mounting cavity. The first elastomer is at least partially disposed in the mounting cavity, and the first elastomer is configured to be deformed by extrusion. At least a portion of the second elastomer is disposed in the mounting cavity, and the second elastomer is configured to be deformed by extrusion. The shell assembly is connected to the handle in a relatively movable manner, and the shell assembly has a first position and a second position relative to the handle, the shell assembly at the first position extruding the first elastomer, and the shell assembly at the second position extruding the first elastomer and the second elastomer; the drive mechanism is disposed in the shell assembly.

[0006] The power wrench of this embodiment of the utility model utilizes a first and second elastic body to provide graded cushioning for the housing assembly. This allows the first and second elastic bodies to provide a strong shock-absorbing effect on the housing assembly when the power wrench is subjected to high vibration and impact forces, significantly reducing the impact force exerted by the handle on the user. Furthermore, the graded cushioning effect of the first and second elastic bodies on the housing assembly enhances the user's hand feel.

[0007] According to some embodiments of the present invention, the shell assembly includes a shell, the shell including a first abutting portion and a second abutting portion arranged opposite to each other in a first direction, the first elastomer and the second elastomer are both located between the first abutting portion and the second abutting portion, when the shell assembly is in the first position, one of the first abutting portion and the second abutting portion squeezes the first elastomer, and when the shell assembly is in the second position, one of the first abutting portion and the second abutting portion squeezes the first elastomer and the second elastomer.

[0008] According to some embodiments of the present invention, the first elastomer includes an elastic deformation portion, the second elastomer includes a first connecting portion, a second connecting portion and an elastic connecting portion, the first connecting portion and the second connecting portion are both located between the first abutting portion and the second abutting portion in the first direction, the first connecting portion and the second connecting portion are relatively arranged in the first direction, the first connecting portion and the second connecting portion are both connected to the elastic connecting portion, at least part of the elastic deformation portion is located between the first connecting portion and the second connecting portion in the first direction, when the shell assembly is in the first position, one of the first abutting portion and the second abutting portion squeezes the elastic deformation portion, and when the shell assembly is in the second position, one of the first abutting portion and the second abutting portion squeezes the elastic deformation portion and squeezes the first connecting portion or the second connecting portion.

[0009] According to some embodiments of the present invention, the shell assembly also includes a first middle piece and a second middle piece, the first connecting portion is provided with a first connecting hole, the second connecting portion is provided with a second connecting hole, the first middle piece includes a third abutting portion and a fourth abutting portion connected to each other, the second middle piece includes a fifth abutting portion and a sixth abutting portion connected to each other, the third abutting portion is located between the elastic deformation portion and the first abutting portion and abuts against the elastic deformation portion, the fourth abutting portion is located between the third abutting portion and the first abutting portion in the first direction, the fourth abutting portion abuts against the first abutting portion, the fifth abutting portion is located between the elastic deformation portion and the first abutting portion and abuts against the elastic deformation portion, and the third abutting portion is located between the elastic deformation portion and the first abutting portion and abuts against the elastic deformation portion. The sixth abutment portion is located between the fifth abutment portion and the second abutment portion in the first direction, and the sixth abutment portion abuts against the second abutment portion. When the shell assembly is located in the first position, at least part of the third abutment portion is located in the first connecting hole and squeezes the elastic deformation portion, or, at least part of the fifth abutment portion is located in the second connecting hole and squeezes the elastic deformation portion. When the shell assembly is located in the second position, at least part of the third abutment portion is located in the first connecting hole and squeezes the elastic deformation portion, and the fourth abutment portion squeezes the first connecting portion, or, at least part of the fifth abutment portion is located in the second connecting hole and squeezes the elastic deformation portion, and the sixth abutment portion squeezes the second connecting portion.

[0010] According to some embodiments of the present utility model, the elastic deformation portion includes an elastic body, a first deformation portion connected to the elastic body, and a second deformation portion connected to the elastic body, the elastic body is located between the first connecting portion and the second connecting portion in the first direction, the first deformation portion and the second deformation portion are located on both sides of the body in the first direction, at least part of the side wall of the first deformation portion abuts against the inner wall of the first connecting hole and is located in the first connecting hole, at least part of the side wall of the second deformation portion abuts against the inner wall of the second connecting hole and is located in the second connecting hole, the third abutting portion abuts against the first deformation portion, and the fifth abutting portion abuts against the second deformation portion. When the shell assembly is in the first position, at least part of the third abutting portion is located in the first connecting hole and squeezes the first deformation portion, or at least part of the fifth abutting portion is located in the second connecting hole and squeezes the second deformation portion. When the shell assembly is in the second position, the third abutting portion squeezes the first deformation portion, the fourth abutting portion squeezes the first connecting portion, or the fifth abutting portion squeezes the second deformation portion, and the sixth abutting portion squeezes the second connecting portion.

[0011] According to some embodiments of the present utility model, the first middle piece is provided with a first middle hole that passes through the third abutting portion and the fourth abutting portion along the first direction, the second middle piece is provided with a second middle hole that passes through the fifth abutting portion and the sixth abutting portion along the first direction, the first abutting portion is provided with a third connecting hole extending along the first direction, and the second abutting portion is provided with a fourth connecting hole extending along the first direction, the first elastic body also includes a first elastic protrusion and a second elastic protrusion, the first elastic protrusion is located on the side of the first deformation portion away from the elastic main body in the first direction and is connected to the first deformation portion, the second elastic protrusion is located on the side of the second deformation portion away from the elastic main body in the first direction and is connected to the second deformation portion, the first elastic protrusion is passed through the first middle hole, a part of the first elastic protrusion is located in the third connecting hole, the second elastic protrusion is passed through the second middle hole, and a part of the second elastic protrusion is located in the fourth connecting hole.

[0012] According to some embodiments of the present invention, there are multiple elastic deformation parts, the first elastomer also includes a base part, and each adjacent two elastic deformation parts are connected through the base part; and / or, the handle is provided with a mounting column located in the mounting cavity, and the mounting column is passed through the elastic connecting part.

[0013] According to some embodiments of the present invention, the shell includes a casing, the casing includes the first abutment portion and the second abutment portion, one of the casing and the handle is provided with a first guide column extending along the first direction, the other of the casing and the handle is provided with a first guide portion, the first guide portion defines a first guide hole extending along the first direction, the first guide column is passed through the first guide hole, the first guide column is passed through the first guide hole, and the inner wall of the first guide hole is spaced apart from the first guide column.

[0014] According to some embodiments of the present invention, the shell also includes a head shell connected to the casing in a second direction, the casing and the head shell are both connected to the handle in a third direction, one of the head shell and the handle is provided with a second guide column, and the other of the head shell and the handle is provided with a second guide portion, the second guide portion defines a second guide hole extending along the first direction, the second guide column is passed through the second guide hole, and the inner wall of the second guide hole is spaced apart from the second guide column, wherein the second direction and the third direction are both perpendicular to the first direction, and the second direction and the third direction intersect.

[0015] According to some embodiments of the present invention, the elastic coefficient of the second elastic body is greater than the elastic coefficient of the first elastic body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 This is a three-dimensional schematic diagram of a power wrench according to an embodiment of the present utility model;

[0018] Figure 2 A partial cross-sectional view of a power wrench according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the cooperation between the first elastic body and the second elastic body according to an embodiment of the present utility model;

[0020] Figure 4 A schematic diagram of a first elastic body according to an embodiment of the present invention;

[0021] Figure 5 A schematic diagram of a second elastic body according to an embodiment of the present invention;

[0022] Figure 6 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 7 for Figure 2 A magnified view from another angle at center A;

[0024] Figure 8 A schematic diagram of a housing according to an embodiment of the present invention;

[0025] Figure 9 for Figure 6 Enlarged view of point B in the middle;

[0026] Figure 10 This is a schematic diagram of a first middleware according to an embodiment of the present utility model;

[0027] Figure 11 This is a schematic diagram of the second middleware according to an embodiment of the present invention.

[0028] The reference numerals in the accompanying drawings represent the following:

[0029] 100. Power wrench;

[0030] 1. Handle; 11. Mounting cavity; 12. Mounting column; 13. First guide column; 14. Second guide column;

[0031] 2. First elastic body; 21. Elastic deformation portion; 211. Elastic body; 212. First deformation portion; 213. Second deformation portion; 22. First elastic protrusion; 23. Second elastic protrusion; 24. Base portion;

[0032] 3. Second elastic body; 31. First connecting portion; 311. First connecting hole; 312. Second connecting hole; 32. Second connecting portion; 33. Elastic connecting portion;

[0033] 4. Housing assembly; 41. Housing; 411. First abutting portion; 4111. Third connecting hole; 412. Second abutting portion; 4121. Fourth connecting hole; 413. Housing; 4131. First guide portion; 4132. First guide hole; 414. Head housing; 4141. Second guide portion; 4142. Second guide hole; 42. First intermediate member; 421. Third abutting portion; 422. Fourth abutting portion; 423. First intermediate hole; 43. Second intermediate member; 431. Fifth abutting portion; 432. Sixth abutting portion; 433. Second intermediate hole;

[0034] a. First direction; b. Second direction; c. Third direction. DETAILED DESCRIPTION

[0035] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention 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 invention and to fully convey the scope of the present invention to those skilled in the art.

[0036] 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.

[0037] 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 teachings of the example embodiments. In the description of the present utility model, the meaning of "multiple" is at least two, for example two, three, etc., unless otherwise clearly and specifically defined.

[0038] 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 rotated, an element described as "below" or "beneath" another element or feature would subsequently be oriented "above" or "above" the other element or feature. Thus, the example term "below" can encompass both above and below orientations.

[0039] In the description of this embodiment, the orientation or position relationship indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "circumferential", "height direction", "first direction", and "second direction" are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0040] In the description of this embodiment, the orientation or position relationship indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "circumferential", "height direction", "first direction", and "second direction" are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0041] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0042] An electric wrench is an electric tool widely used in industries such as industry, automobile maintenance, and construction. It can quickly and efficiently tighten and loosen bolts and nuts.

[0043] In the related art, electric wrenches generate vibration and impact force when working, which causes the user's hands to bear the impact force of the electric wrench, causing discomfort to the user. In addition, long-term use of the electric wrench can easily cause fatigue. For this reason, the electric wrench in the related art is provided with a shock-absorbing structure.

[0044] However, through analysis of electric wrenches in the related art, the inventors realized that these electric wrenches typically use a single shock-absorbing structure. When the impact force and vibration are too large, the elastic deformation of the shock-absorbing structure reaches its limit, and the shock-absorbing effect of the shock-absorbing structure decreases sharply, resulting in the user still being able to feel a large impact force during use. For example, some electric wrenches in the related art are equipped with a shock-absorbing structure at the junction of the upper shell and the handle. However, when the impact force of the electric wrench increases to 800N (Newton) or more, the shock-absorbing performance of the shock-absorbing structure decreases sharply, resulting in the user still being able to feel the huge impact force.

[0045] Therefore, the electric wrench in the related art has poor shock absorption performance when the vibration and impact force are large.

[0046] In order to at least solve the problem of poor vibration damping performance of electric wrenches in related art when vibration and impact force are large, an embodiment of the present utility model provides a power wrench 100 having high vibration damping performance when vibration and impact force are large.

[0047] The power wrench 100 may be driven by electricity, oil, or other driving methods to generate power. The power wrench 100 may also generate power by combining multiple different driving methods.

[0048] The power wrench 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0049] Combine Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the power wrench 100 of an embodiment of the present invention includes a handle 1, a first elastomer 2, a second elastomer 3, a shell assembly 4 and a drive mechanism (not shown in the figure). The handle 1 is suitable for being held, and the handle 1 defines a mounting cavity 11. At least a portion of the first elastomer 2 is disposed in the mounting cavity 11, and the first elastomer 2 is configured to be deformed by extrusion. At least a portion of the second elastomer 3 is disposed in the mounting cavity 11, and the second elastomer 3 is configured to be deformed by extrusion. The shell assembly 4 is connected to the handle 1 in a relatively movable manner, and the shell assembly 4 has a first position and a second position relative to the handle 1. The shell assembly 4 at the first position squeezes the first elastomer 2, and the shell assembly 4 at the second position squeezes the first elastomer 2 and the second elastomer 3. The drive mechanism (not shown in the figure) is disposed in the shell assembly 4.

[0050] It should be noted that the first position is a plurality of positions, and the second position is a plurality of positions.

[0051] The housing assembly 4 is connected to the handle 1 in a relatively movable manner, which means that the housing assembly 4 can vibrate relative to the handle 1 .

[0052] When the power wrench 100 of this embodiment is in operation, the drive mechanism outputs torque. Under the impact and vibration of the drive mechanism, the housing assembly 4 vibrates. When the vibration generated by the housing assembly 4 is relatively small, the housing assembly 4 can be in a first position during the vibration process. The housing assembly 4 in the first position compresses the first elastic body 2, causing the first elastic body 2 to deform due to the compression, thereby buffering the vibration of the housing assembly 4. When the vibration generated by the housing assembly 4 is relatively large, the housing assembly 4 can be in a second position during the vibration process. The housing assembly 4 in the second position compresses the first elastic body 2 and the second elastic body 3, causing both the first elastic body 2 and the second elastic body 3 to deform due to the compression, thereby buffering the vibration of the housing assembly 4. Because at least a portion of the first elastic body 2 and at least a portion of the second elastic body 3 are disposed within the mounting cavity 11, the shock-absorbing effect of the first elastic body 2 and the second elastic body 3 can reduce the impact force exerted by the housing assembly 4 on the handle 1, thereby reducing the impact force exerted by the handle 1 on the user.

[0053] When the vibration and impact force generated by the driving mechanism are small, the vibration degree of the shell assembly 4 is small. When the shell assembly 4 moves to the first position, the first elastomer 2 can cushion the movement of the shell assembly 4 to a large extent. Therefore, through the shock-absorbing effect of the first elastomer 2, the impact force of the shell assembly 4 on the handle 1 can be reduced, thereby reducing the impact force of the handle 1 on the user.

[0054] When the vibration and impact force generated by the driving mechanism are large, the vibration degree of the shell assembly 4 is large. The shell assembly 4 moves to the first position, and the first elastomer 2 is difficult to cushion the movement of the shell assembly 4 to a large extent. Therefore, the shell assembly 4 moves from the first position to the second position while squeezing the first elastomer 2. When the shell assembly 4 moves to the second position, the deformation of the first elastomer 2 is large, and the shock absorption performance of the first elastomer 2 becomes smaller. The shell assembly 4 squeezes the first elastomer 2 while squeezing the second elastomer 3. The second elastomer 3 is deformed to further cushion the vibration of the shell assembly 4. Since the deformation of the second elastomer 3 is relatively small when the shell assembly 4 moves to the second position, the cushioning effect of the second elastomer 3 is better, so that the shell assembly 4 can be cushioned to a large extent.

[0055] Thus, the housing assembly 4 can be buffered in stages by the first elastic body 2 and the second elastic body 3. Therefore, when the vibration and impact force of the power wrench 100 of this embodiment are large, the first elastic body 2 and the second elastic body 3 can produce a strong shock-absorbing effect on the housing assembly 4, so as to greatly reduce the impact force of the handle 1 on the user, thereby ensuring that the power wrench 100 of this embodiment has a higher shock-absorbing effect when the vibration and impact force are large.

[0056] In addition, the graded buffering effect of the first elastic body 2 and the second elastic body 3 on the housing assembly 4 can improve the hand feeling of the user.

[0057] Combine Figure 2 、 Figure 3 、 Figure 6 、 Figure 8 and Figure 9 As shown, in some embodiments, the shell assembly 4 includes a shell 41, the shell 41 includes a first abutment portion 411 and a second abutment portion 412 arranged opposite to each other in a first direction a, and the first elastomer 2 and the second elastomer 3 are both located between the first abutment portion 411 and the second abutment portion 412.

[0058] When the shell assembly 4 is in the first position, one of the first abutting portion 411 and the second abutting portion 412 squeezes the first elastomer 2 ; when the shell assembly 4 is in the second position, one of the first abutting portion 411 and the second abutting portion 412 squeezes the first elastomer 2 and the second elastomer 3 .

[0059] The first direction a is Figure 2 、 Figure 3 、 Figure 4 and Figure 9 As shown by the arrow at a, as an example, the first direction a is the thickness direction of the first elastic body 2.

[0060] The vibration of the shell assembly 4 can be regular vibration or irregular vibration. When the shell assembly 4 vibrates, the first abutment portion 411 can be close to the first elastomer 2, that is, the second abutment portion 412 is away from the first elastomer 2, or the first abutment portion 411 can be away from the first elastomer 2, that is, the second abutment portion 412 is close to the first elastomer 2.

[0061] When the shell assembly 4 is in the first position, the one of the first abutting portion 411 and the second abutting portion 412 closer to the first elastomer 2 squeezes the first elastomer 2. When the shell assembly 4 is in the second position, the one of the first abutting portion 411 and the second abutting portion 412 closer to the first elastomer 2 squeezes the first elastomer 2 and the second elastomer 3.

[0062] Thus, by providing the first abutting portion 411 and the second abutting portion 412 opposite to each other in the first direction a, the first elastic body 2 and the second elastic body 3 can more effectively cushion the housing assembly 4, thereby improving the shock absorption effect of the power wrench 100 of this embodiment.

[0063] Combine Figure 2 、 Figure 3 and Figure 5As shown, in some embodiments, the first elastic body 2 includes an elastic deformation portion 21, and the second elastic body 3 includes a first connecting portion 31, a second connecting portion 32, and an elastic connecting portion 33. The first connecting portion 31 and the second connecting portion 32 are both located between the first abutting portion 411 and the second abutting portion 412 in the first direction a. The first connecting portion 31 and the second connecting portion 32 are arranged opposite to each other in the first direction a. The first connecting portion 31 and the second connecting portion 32 are both connected to the elastic connecting portion 33. At least a portion of the elastic deformation portion 21 is located between the first connecting portion 31 and the second connecting portion 32 in the first direction a. In other words, the entire elastic deformation portion 21 may be located between the first connecting portion 31 and the second connecting portion 32 in the first direction a, or a portion of the elastic deformation portion 21 may be located between the first connecting portion 31 and the second connecting portion 32 in the first direction a.

[0064] When the shell assembly 4 is located at the first position, one of the first abutting portion 411 and the second abutting portion 412 squeezes the elastic deformation portion 21. When the shell assembly 4 is located at the second position, one of the first abutting portion 411 and the second abutting portion 412 squeezes the elastic deformation portion 21 and squeezes the first connecting portion 31 or the second connecting portion 32.

[0065] The first connecting portion 31 and the second connecting portion 32 are arranged opposite to each other in the first direction a, so that the second elastic body 3 can be adapted to the first abutting portion 411 and the second abutting portion 412 , thereby improving the shock absorption effect of the power wrench 100 of this embodiment.

[0066] Furthermore, at least a portion of the elastically deformable portion 21 is located between the first connecting portion 31 and the second connecting portion 32 in the first direction a, thereby achieving a compact structure and improving space utilization. By at least a portion of the elastically deformable portion 21 being located between the first connecting portion 31 and the second connecting portion 32 in the first direction a, the difficulty of the first connecting portion 31 squeezing the elastically deformable portion 21 and the first connecting portion 31 can be reduced, and the difficulty of the second connecting portion 32 squeezing the elastically deformable portion 21 and the second connecting portion 32 can also be reduced.

[0067] Combine Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11As shown, in some embodiments, the shell assembly 4 also includes a first middle piece 42 and a second middle piece 43, the first connecting portion 31 is provided with a first connecting hole 311, the second connecting portion 32 is provided with a second connecting hole 312, the first middle piece 42 includes a third abutting portion 421 and a fourth abutting portion 422 connected to each other, and the second middle piece 43 includes a fifth abutting portion 431 and a sixth abutting portion 432 connected to each other.

[0068] The third abutment portion 421 is located between the elastic deformation portion 21 and the first abutment portion 411 and abuts against the elastic deformation portion 21, the fourth abutment portion 422 is located between the third abutment portion 421 and the first abutment portion 411 in the first direction a, and the fourth abutment portion 422 abuts against the first abutment portion 411, the fifth abutment portion 431 is located between the elastic deformation portion 21 and the first abutment portion 411 and abuts against the elastic deformation portion 21, the sixth abutment portion 432 is located between the fifth abutment portion 431 and the second abutment portion 412 in the first direction a, and the sixth abutment portion 432 abuts against the second abutment portion 412.

[0069] When the housing assembly 4 is located at the first position, at least a portion of the third abutting portion 421 is located in the first connecting hole 311 and presses the elastic deformation portion 21 , or at least a portion of the fifth abutting portion 431 is located in the second connecting hole 312 and presses the elastic deformation portion 21 .

[0070] When the shell assembly 4 is in the second position, at least part of the third abutment portion 421 is located in the first connecting hole 311 and squeezes the elastic deformation portion 21, and the fourth abutment portion 422 squeezes the first connecting portion 31, or, at least part of the fifth abutment portion 431 is located in the second connecting hole 312 and squeezes the elastic deformation portion 21, and the sixth abutment portion 432 squeezes the second connecting portion 32.

[0071] The first middle piece 42 and the second middle piece 43 are both rigid pieces. When the first middle piece 42 and the second middle piece 43 squeeze the elastic deformation part 21, the first connecting part 31 and the second connecting part 32, the first middle piece 42 and the second middle piece 43 do not deform or the deformation generated is negligible.

[0072] When the housing assembly 4 is in the first position, the first intermediate piece 42 enables the first abutting portion 411 to press the elastic deformation portion 21 and separate from the first connecting portion 31, and the second intermediate piece 43 enables the second abutting portion 412 to press the elastic deformation portion 21 and separate from the second connecting portion 32. When the housing assembly 4 is in the second position, the first intermediate piece 42 enables the first abutting portion 411 to press the elastic deformation portion 21 and the first connecting portion 31, and the second intermediate piece 43 enables the elastic deformation portion 21 and the second connecting portion 32 to be pressed, thereby enabling the first elastic body 2 and the second elastic body 3 to provide graded cushioning to the housing assembly 4.

[0073] Furthermore, when the housing assembly 4 is in the second position, at least a portion of the third abutting portion 421 is located within the first connecting hole 311, and at least a portion of the fifth abutting portion 431 is located within the second connecting hole 312. The first connecting hole 311 allows the third abutting portion 421 to be guided, thereby ensuring more accurate movement of the first intermediate member 42. The second connecting hole 312 allows the fifth abutting portion 431 to be guided, thereby ensuring more accurate movement of the second intermediate member 43.

[0074] Combine Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11 As shown, in some embodiments, the elastic deformation portion 21 includes an elastic body 211, a first deformation portion 212 connected to the elastic body 211, and a second deformation portion 213 connected to the elastic body 211. The elastic body 211 is located between the first connecting portion 31 and the second connecting portion 32 in the first direction a. The first deformation portion 212 and the second deformation portion 213 are located on both sides of the body in the first direction a. At least a portion of the side wall of the first deformation portion 212 abuts against the inner wall of the first connecting hole 311 and is located in the first connecting hole 311. At least a portion of the side wall of the second deformation portion 213 abuts against the inner wall of the second connecting hole 312 and is located in the second connecting hole 312. The third abutting portion 421 abuts against the first deformation portion 212, and the fifth abutting portion 431 abuts against the second deformation portion 213.

[0075] When the shell 41 assembly 4 is located in the first position, at least part of the third abutting portion 421 is located in the first connecting hole 311 and presses the first deformable portion 212 , or at least part of the fifth abutting portion 431 is located in the second connecting hole 312 and presses the second deformable portion 213 .

[0076] When the housing assembly 4 is located at the second position, the third abutting portion 421 presses the first deforming portion 212 and the fourth abutting portion 422 presses the first connecting portion 31 , or the fifth abutting portion 431 presses the second deforming portion 213 and the sixth abutting portion 432 presses the second connecting portion 32 .

[0077] When the housing assembly 4 is in the first position, the first intermediate piece 42 enables the first abutting portion 411 to squeeze the first deformable portion 212 and separate from the first connecting portion 31, and the second intermediate piece 43 enables the second abutting portion 412 to squeeze the second deformable portion 213 and separate from the second connecting portion 32. When the housing assembly 4 is in the second position, the first intermediate piece 42 enables the first abutting portion 411 to squeeze the first deformable portion 212 and the first connecting portion 31, and the second intermediate piece 43 enables the second deformable portion 213 and the second connecting portion 32, thereby enabling the first elastic body 2 and the second elastic body 3 to provide graded cushioning to the housing assembly 4.

[0078] In addition, when the shell assembly 4 is in the second position, the third abutment portion 421 can be guided through the first connecting hole 311 to make the movement of the first middle piece 42 more accurate, and the fifth abutment portion 431 can be guided through the second connecting hole 312 to make the movement of the second middle piece 43 more accurate.

[0079] Furthermore, because at least a portion of the sidewall of the first deformable portion 212 abuts against the inner wall of the first connecting hole 311 and is located within the first connecting hole 311, the first deformable portion 212 and the first connecting hole 311 can be used to position the first connecting portion 31, thereby reducing the difficulty of installing the first elastic body 2 and the second elastic body 3. At least a portion of the sidewall of the second deformable portion 213 abuts against the inner wall of the second connecting hole 312 and is located within the second connecting hole 312. Therefore, the second deformable portion 213 and the second connecting hole 312 can be used to position the second connecting portion 32, thereby reducing the difficulty of installing the first elastic body 2 and the second elastic body 3.

[0080] In other embodiments, the entire elastic deformation portion 21 is located between the first connecting portion 31 and the second connecting portion 32 in the first direction a, the third abutting portion 421 is provided through the first connecting hole 311 and abuts against the elastic deformation portion 21, and the fifth abutting portion 431 is provided through the second connecting hole 312 and abuts against the elastic deformation portion 21. When the shell assembly 4 is in the first position, the third abutting portion 421 squeezes the elastic deformation portion 21, or the fifth abutting portion 431 squeezes the elastic deformation portion 21. When the shell assembly 4 is in the second position, the third abutting portion 421 squeezes the elastic deformation portion 21, the fourth abutting portion 422 squeezes the first connecting portion 31, or the fifth abutting portion 431 squeezes the elastic deformation portion 21, and the sixth abutting portion 432 squeezes the second connecting portion 32. In this way, the first elastomer 2 and the second elastomer 3 can provide graded buffering to the shell assembly 4.

[0081] Combine Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, in some embodiments, the first middle piece 42 is provided with a first middle hole 423 passing through the third abutting portion 421 and the fourth abutting portion 422 along the first direction a, the second middle piece 43 is provided with a second middle hole 433 passing through the fifth abutting portion 431 and the sixth abutting portion 432 along the first direction a, the first abutting portion 411 is provided with a third connecting hole 4111 extending along the first direction a, and the second abutting portion 412 is provided with a fourth connecting hole 4121 extending along the first direction a.

[0082] The first elastic body 2 also includes a first elastic protrusion 22 and a second elastic protrusion 23. The first elastic protrusion 22 is located on the side of the first deformation portion 212 away from the elastic main body 211 in the first direction a and is connected to the first deformation portion 212. The second elastic protrusion 23 is located on the side of the second deformation portion 213 away from the elastic main body 211 in the first direction a and is connected to the second deformation portion 213.

[0083] The first elastic protrusion 22 is passed through the first middle hole 423 , and a portion of the first elastic protrusion 22 is located in the third connecting hole 4111 . The second elastic protrusion 23 is passed through the second middle hole 433 , and a portion of the second elastic protrusion 23 is located in the fourth connecting hole 4121 .

[0084] The third connection hole 4111 can be a through hole or a blind hole with its opening facing the first elastic protrusion 22. The fourth connection hole 4121 can be a through hole or a blind hole with its opening facing the second elastic protrusion. A through hole is a hole that passes through an object. A blind hole is a hole that is open at one end and does not pass through the object at the other end.

[0085] A portion of the first elastic protrusion 22 is located within the third connection hole 4111. The first elastic protrusion 22 can cushion any movement of the first abutting portion 411 other than in the first direction a, thereby increasing the cushioning effect on the housing assembly 4. Furthermore, the first elastic protrusion 22 and the third connection hole 4111 enable positioning, thereby reducing the difficulty of installing the first elastic body 2 and the housing 41.

[0086] A portion of the second elastic protrusion 23 is located within the fourth connection hole 4121. The second elastic protrusion 23 can cushion any movement of the second abutting portion 412 other than in the first direction a, thereby increasing the cushioning effect on the housing assembly 4. Furthermore, the second elastic protrusion 23 and the fourth connection hole 4121 can be positioned, thereby reducing the difficulty of installing the first elastic body 2 and the housing 41.

[0087] The first elastic protrusion 22 is provided through the first middle hole 423. The first elastic protrusion 22 and the first middle hole 423 can guide the first middle member 42, thereby increasing the movement accuracy of the first middle member 42. The second elastic protrusion 23 is provided through the second middle hole 433. The second elastic protrusion 23 and the second middle hole 433 can guide the second middle member 43, thereby increasing the movement accuracy of the second middle member 43.

[0088] like Figure 4 As shown, in some embodiments, it is characterized in that a plurality of elastic deformation portions 21 are provided, and the first elastic body 2 further includes a base portion 24, and each two adjacent elastic deformation portions 21 are connected by the base portion 24. By providing a plurality of elastic deformation portions 21, the cushioning effect of the housing assembly 4 can be increased.

[0089] Combine Figure 2 and Figure 6 As shown, in some embodiments, the handle 1 is provided with a mounting post 12 located in the mounting cavity 11, and the mounting post 12 is provided through the elastic connecting portion 33. The elastic connecting portion 33 can be installed through the mounting post 12, so that the second elastic body 3 can be more stably located in the mounting cavity 11.

[0090] Combine Figure 2 、 Figure 6 and Figure 8 As shown, in some embodiments, the housing 41 includes a casing 413, which includes a first abutting portion 411 and a second abutting portion 412. One of the casing 413 and the handle 1 is provided with a first guide post 13 extending along a first direction a, and the other of the casing 413 and the handle 1 is provided with a first guide portion 4131. The first guide portion 4131 defines a first guide hole 4132 extending along the first direction a. The first guide post 13 is disposed in the first guide hole 4132, and the inner wall of the first guide hole 4132 is spaced apart from the first guide post 13. In other words, the first guide post 13 is disposed in the first guide hole 4132, and a gap exists between the inner wall of the first guide hole 4132 and the sidewall of the first guide post 13.

[0091] There is a gap between the first guide post 13 and the first guide hole 4132 , which can reduce the force exerted by the housing 413 on the handle 1 when the housing 413 vibrates relative to the handle 1 .

[0092] In addition, through the interaction between the first guide column 13 and the first guide hole 4132, the vibration of the casing 413 can be converted into movement along the first direction a as much as possible, so that the first elastomer 2 and the second elastomer 3 can more efficiently buffer the movement of the casing 413.

[0093] like Figure 2As shown, in some embodiments, the housing 41 further includes a head shell 414 connected to the housing 413 in the second direction b. Both the housing 413 and the head shell 414 are connected to the handle 1 in the third direction c. One of the head shell 414 and the handle 1 is provided with a second guide post 14, and the other of the head shell 414 and the handle 1 is provided with a second guide portion 4141. The second guide portion 4141 defines a second guide hole 4142 extending along the first direction a. The second guide post 14 is disposed in the second guide hole 4142, and the inner wall of the second guide hole 4142 is spaced apart from the second guide post 14. In other words, the second guide post 14 is disposed in the second guide hole 4142, and a gap exists between the inner wall of the second guide hole 4142 and the outer wall of the second guide post 14.

[0094] The second direction b and the third direction c are both perpendicular to the first direction a, and the second direction b and the third direction c intersect.

[0095] The second direction b is Figure 2 As shown by the arrow at b, as an example, the second direction b is the length direction of the shell 41.

[0096] The third direction c is Figure 2 As shown by the arrow at c, as an example, the third direction c is the length direction of the handle 1.

[0097] It should be noted that the intersection of the second direction b and the third direction c means that the second direction b can be perpendicular to the third direction c, or the second direction b can form an angle other than 90° with the third direction c. In other words, the housing 41 and the handle 1 can be perpendicular to each other, or the housing 41 and the handle 1 can form an angle other than 90°.

[0098] There is a gap between the second guide column 14 and the second guide hole 4142 , which can reduce the force exerted by the head shell 414 on the handle 1 when the head shell 414 vibrates relative to the handle 1 .

[0099] In addition, through the interaction between the second guide column 14 and the second guide hole 4142, the vibration of the head shell 414 can be converted into movement along the first direction a as much as possible, so that the first elastomer 2 and the second elastomer 3 can more efficiently buffer the movement of the head shell 414.

[0100] In some embodiments, the elastic coefficient of the second elastic body 3 is greater than the elastic coefficient of the first elastic body 2. In other words, the elastic coefficient of the first elastic body 2 is smaller than the elastic coefficient of the second elastic body 3.

[0101] By making the elastic coefficient of the second elastic body 3 greater than the elastic coefficient of the first elastic body 2 , the effect of providing graded cushioning to the housing assembly 4 can be enhanced.

[0102] The above description is merely a preferred embodiment 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 power wrench, characterized in that: include: a handle adapted to be gripped, the handle defining a mounting cavity; a first elastic body, at least partially disposed in the mounting cavity, the first elastic body being configured to deform under compression; a second elastic body, at least partially disposed in the mounting cavity, the second elastic body being configured to deform under compression; a housing assembly connected to the handle in a relatively movable manner, the housing assembly having a first position and a second position relative to the handle, the housing assembly in the first position squeezing the first elastic body, and the housing assembly in the second position squeezing the first elastic body and the second elastic body; The driving mechanism is arranged in the housing assembly.

2. The power wrench according to claim 1, characterized in that: The housing assembly includes a housing, the housing includes a first abutting portion and a second abutting portion arranged opposite to each other in a first direction, the first elastic body and the second elastic body are both located between the first abutting portion and the second abutting portion, When the shell assembly is located at the first position, one of the first abutting portion and the second abutting portion squeezes the first elastomer, and when the shell assembly is located at the second position, one of the first abutting portion and the second abutting portion squeezes the first elastomer and the second elastomer.

3. The power wrench according to claim 2, characterized in that: The first elastic body includes an elastic deformation portion, and the second elastic body includes a first connecting portion, a second connecting portion, and an elastic connecting portion. The first connecting portion and the second connecting portion are both located between the first abutting portion and the second abutting portion in the first direction. The first connecting portion and the second connecting portion are arranged opposite to each other in the first direction. The first connecting portion and the second connecting portion are both connected to the elastic connecting portion. At least part of the elastic deformation portion is located between the first connecting portion and the second connecting portion in the first direction. When the shell assembly is located at the first position, one of the first abutting portion and the second abutting portion squeezes the elastic deformation portion; when the shell assembly is located at the second position, one of the first abutting portion and the second abutting portion squeezes the elastic deformation portion and squeezes the first connecting portion or the second connecting portion.

4. The power wrench according to claim 3, characterized in that: The housing assembly further includes a first middle piece and a second middle piece, the first connecting portion is provided with a first connecting hole, the second connecting portion is provided with a second connecting hole, the first middle piece includes a third abutting portion and a fourth abutting portion connected to each other, and the second middle piece includes a fifth abutting portion and a sixth abutting portion connected to each other, The third abutting portion is located between the elastic deformation portion and the first abutting portion and abuts against the elastic deformation portion, the fourth abutting portion is located between the third abutting portion and the first abutting portion in the first direction, and the fourth abutting portion abuts against the first abutting portion, the fifth abutting portion is located between the elastic deformation portion and the first abutting portion and abuts against the elastic deformation portion, the sixth abutting portion is located between the fifth abutting portion and the second abutting portion in the first direction, and the sixth abutting portion abuts against the second abutting portion, When the housing assembly is located at the first position, at least a portion of the third abutting portion is located in the first connecting hole and presses the elastic deformation portion, or at least a portion of the fifth abutting portion is located in the second connecting hole and presses the elastic deformation portion. When the shell assembly is located in the second position, at least part of the third abutting portion is located in the first connecting hole and squeezes the elastic deformation portion, and the fourth abutting portion squeezes the first connecting portion, or at least part of the fifth abutting portion is located in the second connecting hole and squeezes the elastic deformation portion, and the sixth abutting portion squeezes the second connecting portion.

5. The power wrench according to claim 4, characterized in that: The elastic deformation portion includes an elastic body, a first deformation portion connected to the elastic body, and a second deformation portion connected to the elastic body, the elastic body is located between the first connecting portion and the second connecting portion in the first direction, the first deformation portion and the second deformation portion are located on both sides of the body in the first direction, at least a portion of the side wall of the first deformation portion abuts against the inner wall of the first connecting hole and is located in the first connecting hole, at least a portion of the side wall of the second deformation portion abuts against the inner wall of the second connecting hole and is located in the second connecting hole, the third abutting portion abuts against the first deformation portion, and the fifth abutting portion abuts against the second deformation portion. When the housing assembly is located at the first position, at least a portion of the third abutting portion is located in the first connecting hole and presses the first deformable portion, or at least a portion of the fifth abutting portion is located in the second connecting hole and presses the second deformable portion. When the housing assembly is located at the second position, the third abutting portion presses the first deformation portion, and the fourth abutting portion presses the first connecting portion, or the fifth abutting portion presses the second deformation portion, and the sixth abutting portion presses the second connecting portion.

6. The power wrench according to claim 5, characterized in that: The first middle piece is provided with a first middle hole penetrating the third abutting portion and the fourth abutting portion along the first direction, the second middle piece is provided with a second middle hole penetrating the fifth abutting portion and the sixth abutting portion along the first direction, the first abutting portion is provided with a third connecting hole extending along the first direction, and the second abutting portion is provided with a fourth connecting hole extending along the first direction, The first elastic body further includes a first elastic protrusion and a second elastic protrusion, wherein the first elastic protrusion is located on a side of the first deformation portion away from the elastic body in the first direction and is connected to the first deformation portion, and the second elastic protrusion is located on a side of the second deformation portion away from the elastic body in the first direction and is connected to the second deformation portion. The first elastic protrusion is passed through the first middle hole, and a portion of the first elastic protrusion is located in the third connecting hole. The second elastic protrusion is passed through the second middle hole, and a portion of the second elastic protrusion is located in the fourth connecting hole.

7. The power wrench according to any one of claims 3 to 6, characterized in that: There are multiple elastic deformation parts, the first elastic body further includes a base part, and each two adjacent elastic deformation parts are connected through the base part; and / or, The handle is provided with a mounting post located in the mounting cavity, and the mounting post passes through the elastic connecting portion.

8. The power wrench according to any one of claims 2 to 6, characterized in that: The shell includes a casing, the casing includes the first abutment portion and the second abutment portion, one of the casing and the handle is provided with a first guide column extending along the first direction, the other of the casing and the handle is provided with a first guide portion, the first guide portion defines a first guide hole extending along the first direction, the first guide column is passed through the first guide hole, and the inner wall of the first guide hole is spaced apart from the first guide column.

9. The power wrench according to claim 8, characterized in that: The shell further includes a head shell connected to the housing in a second direction, the housing and the head shell are both connected to the handle in a third direction, one of the head shell and the handle is provided with a second guide post, the other of the head shell and the handle is provided with a second guide portion, the second guide portion defines a second guide hole extending along the first direction, the second guide post is passed through the second guide hole, and the inner wall of the second guide hole is spaced apart from the second guide post. The second direction and the third direction are both perpendicular to the first direction, and the second direction and the third direction intersect.

10. The power wrench according to any one of claims 1 to 6, characterized in that: The elastic coefficient of the second elastic body is greater than the elastic coefficient of the first elastic body.

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