Electric tool

Abstract

Disclosed is an electric tool, comprising: a main housing (1), a handle (2), and an elastic member (3), wherein a protruding portion (11) is provided below the main housing (1); the handle (2) is connected to the main housing (1), the upper end of the handle (2) being provided with an accommodating cavity (21), which is configured to accommodate at least part of the protruding portion (11); and the elastic member (3) is arranged in the accommodating cavity (21), and a first inner side wall (211) of the accommodating cavity (21) presses the elastic member (3) and causes same to abut against first outer side walls (111) of the protruding portion (11).

Description

power tools

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 21, 2023, with application number 202322590062.X, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of tools, for example, to an electric tool. Background Art

[0003] During use, an impact wrench transmits an outward impact force to rotate the fastener. Simultaneously, the fastener is impacted, which transmits the impact force back to the tool body, causing the impact wrench to vibrate violently, especially at the handle grip, which affects the grip feel of the entire device during use. Furthermore, since a battery pack is typically located at the bottom of the handle, prolonged vibration can severely impact the communication and structural stability of the battery pack, potentially causing it to fall off or become damaged, rendering the entire device inoperable. Furthermore, as the torque applied to the impact wrench increases, the vibration problem becomes more pronounced, affecting more components.

[0004] Summary of the Invention

[0005] The present application provides an electric tool, which can reduce the vibration transmitted from the main housing to the handle and improve the comfort of holding the handle.

[0006] The present application provides a power tool comprising a main housing, a handle, and an elastic member. A raised portion is disposed below the main housing; the handle is connected to the main housing, and an accommodating cavity is defined at the upper end of the handle, configured to accommodate at least a portion of the raised portion; the elastic member is disposed within the accommodating cavity, with a first inner sidewall of the accommodating cavity pressing the elastic member against a first outer sidewall of the raised portion.

[0007] In one or more embodiments, the first outer side wall is arranged along the length direction of the main shell, and the first inner side wall is arranged along the length direction of the main shell; or, the first outer side wall is arranged along the width direction of the main shell, and the first inner side wall is arranged along the width direction of the main shell; or, the first outer side wall is arranged along the length direction and width direction of the main shell, and the first inner side wall is arranged along the length direction and width direction of the main shell.

[0008] In one or more embodiments, two first outer side walls are provided and are oppositely arranged on both sides of the protrusion, two first inner side walls are provided and are oppositely arranged on both sides of the accommodating cavity, and the two first outer side walls and the two first inner side walls are respectively oppositely arranged and clamp the elastic member.

[0009] In one or more embodiments, a buffer gap is provided between the upper edge of the first outer sidewall and the upper edge of the first inner sidewall, and a buffer gap is provided between the lower edge of the first outer sidewall and the lower edge of the first inner sidewall.

[0010] In one or more embodiments, the first inner side wall is provided with a first notch along the width direction of the main shell.

[0011] In one or more embodiments, a limiting portion is provided on the main housing, a matching portion is provided in the handle, and the matching portion and the limiting portion are configured to match the handle and the main housing.

[0012] In one or more embodiments, the limiting portion includes a limiting hole arranged on the bottom surface of the protrusion and extending along the width direction of the protrusion, and the matching portion includes a limiting column arranged inside the handle and extending along the width direction of the protrusion. The limiting column can be inserted into the limiting hole to mate the handle and the main shell.

[0013] In one or more embodiments, there is a gap between the side wall of the limiting post and the inner wall of the limiting hole.

[0014] In one or more embodiments, the elastic member is made of an elastic material; the elastic member includes an O-shaped elastic ring or a plurality of rubber columns; and a supporting member is provided inside the elastic member.

[0015] In one or more embodiments, the first outer side wall partially clamps the elastic member along the height direction of the main housing; and the first inner side wall partially clamps the elastic member along the height direction of the main housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a first perspective view of a power tool according to an embodiment of the present application.

[0017] FIG2 is an exploded perspective view of a power tool according to an embodiment of the present application.

[0018] FIG3 is a schematic cross-sectional view of the connection between the main housing and the handle of the power tool according to one embodiment of the present application.

[0019] FIG4 is a schematic cross-sectional view of an electric tool according to an embodiment of the present application.

[0020] FIG5 is an exploded schematic diagram of a handle according to an embodiment of the present application.

[0021] Description of main reference numerals:

[0022] 1-main shell, 11-protrusion, 111-first outer wall, 112-limiting hole, 2-handle, 21-accommodating cavity, 211-first inner wall, 212-first notch, 22-limiting column, 3-elastic member, A-buffer gap. DETAILED DESCRIPTION

[0023] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations such as "include" or "comprising", etc., will be understood to include the stated elements or components but not to exclude other elements or other components.

[0024] As shown in Figures 1 to 5, an electric tool according to one embodiment of the present application includes a main housing 1, a handle 2, and an elastic member 3. A cavity is provided inside the main housing 1, which is configured to accommodate a motor and a gearbox, and a protrusion 11 is provided below the main housing 1. The handle 2 is connected to the main housing 1, and a receiving chamber 21 is provided at the upper end of the handle 2, which is configured to accommodate at least part of the bottom of the handle 2 of the protrusion 11, and can also be connected to a battery pack configured to power the electric tool. The elastic member 3 is provided in the receiving chamber 21, and the first inner side wall 211 of the receiving chamber 21 squeezes the elastic member 3 so that it is tightly against the first outer side wall 111 of the protrusion 11.

[0025] In the above embodiment, the main housing 1 and handle 2 are connected via an elastic member 3. The elastic member 3 abuts the raised portion 11 and the sidewalls of the accommodating cavity 21, and the raised portion 11, the sidewalls of the accommodating cavity 21, and the elastic member 3 are tightly positioned between the raised portion 11 and the sidewalls of the accommodating cavity 21, thereby firmly connecting the main housing 1 and handle 2. Since the connection between the handle 2 and the main housing 1 is primarily through the connection between the raised portion 11 and the accommodating cavity 21, the installation of the elastic member 3 at the connection between the handle 2 and the main housing 1 ensures that vibrations from the main housing 1 are transmitted to the handle 2 through the elastic member 3. The elastic member 3 filters the vibrations, thereby partially or completely attenuating the vibrations transmitted to the handle 2. This attenuated vibration transmission to the handle 2 improves the grip comfort of the handle 2, and prevents the battery pack connected to the handle 2 from falling off due to vibration, thereby improving stability. Furthermore, a clearance between the upper end surface of the handle 2 and the lower end surface of the main housing 1 can also provide space for vibrations of the main housing 1 to move, preventing the main housing 1 from contacting the main handle 2 during vibration. If the handle 2 abuts against the end surface of the main housing 1 , vibration will be transmitted from the abutment point of the two end surfaces, thereby weakening the filtering effect of the elastic member 3 .

[0026] In one embodiment, as shown in FIG2 , the first outer sidewall 111 of the protrusion 11 may be arranged along the length direction of the main shell 1 and relatively arranged on both sides of the protrusion 11, or may be arranged along the width direction of the main shell 1 and relatively arranged on both sides of the protrusion 11. The first inner sidewall 211 of the accommodating cavity 21 may be arranged along the length direction of the main shell 1 and relatively arranged on both sides of the accommodating cavity 21, or may be arranged along the width direction of the main shell 1 and relatively arranged on both sides of the accommodating cavity 21. The two first outer sidewalls 111 and the two first inner sidewalls 211 are arranged opposite to each other and sandwich the elastic member 3 therebetween. As shown in FIG2 , the first outer sidewall 111 may be recessed inward to form an arcuate wall, and as shown in FIG5 , the first inner sidewall 211 may be convex outward to form an arcuate wall, with the first outer sidewall 111 and the second inner sidewall 211 sandwiching the elastic member therebetween.

[0027] As shown in Figures 3 and 4, when the protrusion 11 of the main housing 1 is disposed within the accommodating cavity 21 of the handle 2, the elastic member 3 is partially sandwiched between the first outer side wall 111 and the second inner side wall 211. Furthermore, the first outer side wall 111 and the first inner side wall 211 can be configured as arcuate walls that match the shape of the elastic member 3, thereby more securely sandwiching the elastic member 3 between the protrusion 11 and the accommodating cavity 21.

[0028] As shown in Figures 3 and 4, the first outer sidewall 111 can partially clamp the elastic member 3 along the height direction of the main housing 1; the first inner sidewall 211 can also partially clamp the elastic member 3 along the height direction of the main housing 1. Therefore, a buffer gap A is defined between the upper edge of the first outer sidewall 111 and the upper edge of the first inner sidewall 211, and a buffer gap A is defined between the lower edge of the first outer sidewall 111 and the lower edge of the first inner sidewall 211. With this arrangement, when the protrusion 11 shakes or vibrates in the accommodating cavity 21, a buffer space is created between the protrusion 11 and the accommodating cavity 21. Therefore, the protrusion 11 will not directly contact the accommodating cavity 21 during shaking or vibration, thereby preventing the vibration from being transmitted to the handle 2.

[0029] As shown in Figures 3 to 5 , the elastic member 3 is sandwiched between the raised portion 11 and the accommodating cavity 21. When squeezed, it deforms. Uneven deformation may cause the raised portion 11 to abut against the accommodating cavity 21, amplifying vibration. Therefore, a first notch 212 is defined in the first inner sidewall 211. When squeezed, the elastic member 3 can only deform along the first notch 212 without affecting the raised portion 11 and the accommodating cavity 21. Furthermore, the first notch 212 provides sufficient space for the elastic member 3 to deform and extrude.

[0030] To prevent the handle 2 from falling off due to the unstable connection between the handle and the main housing 1 solely relying on the elastic member 3, in one embodiment, a stopper is provided on the bottom surface of the raised portion 11, and a mating portion is provided within the handle 2. The mating portion and the stopper are configured to connect the handle 2 to the main housing 1 to prevent the handle 2 from falling off. As shown in Figures 2 and 5, the stopper can be a stopper hole 112 provided on the bottom surface of the raised portion 11 and extending along the width of the raised portion 11. The mating portion can be a stopper post 22 provided within the handle 2 and extending along the width of the raised portion 11. The stopper post 22 can be inserted into the stopper hole 112 to connect the handle 2 to the main housing 1. A gap is provided between the sidewall of the stopper post 22 and the inner wall of the stopper hole 112, so that there is no contact between the stopper post 22 and the stopper hole 112, thereby preventing vibrations from the main housing 1 from being transmitted to the handle 2 through the gap between the stopper post 22 and the stopper hole 112. In addition, the limiting column 22 is inserted into the limiting hole 112 and is configured to prevent the interaction relationship between the main shell 1, the handle 2 and the elastic member 3 from failing, thereby avoiding the handle 2 from falling off from the main shell 1.

[0031] In one embodiment, the elastic member 3 is made of an elastic material, and a support member may be provided inside the elastic member 3 to increase the support of the elastic member 3. The support member prevents the elastic member 3 from being easily deformed, thereby preventing the connection between the protrusion 11 and the accommodating cavity 21 from vibrating and becoming loose, thereby ensuring a stable connection between the main shell 1 and the handle 2 when the elastic member 2 is squeezed. In different embodiments, the elastic member 3 may be an O-shaped elastic ring or a plurality of rubber columns. The O-shaped elastic ring may be directly placed on the protrusion 11. The rubber column may be provided in four sections, which are respectively arranged around the four side walls of the protrusion 11 and the accommodating cavity 21 to filter vibrations.

[0032] In summary, by providing an elastic member 3 between the handle 2 and the main shell 1, and the elastic member 3 being tightly clamped between the side wall of the protrusion 11 and the side wall of the accommodating cavity 21, the vibration between the handle 2 and the main shell 1 can be filtered, and the vibration on the handle 2 can be weakened or eliminated, thereby improving the comfort of holding the handle 2. Secondly, when the vibration transmitted to the handle 2 is weakened, the battery pack connected to the handle 2 will not fall off due to the vibration, and its stability will also be improved. The buffer gap A between the protrusion 11 and the accommodating cavity 21 leaves room for the vibration of the main shell 1, preventing the main shell 1 from contacting the main handle 2 during the vibration process. In addition, a limiting portion and a matching portion are provided between the handle 2 and the main shell 1, which can prevent the handle 2 from falling off from the main shell 1.

Claims

1. An electric tool, comprising: A main housing (1), wherein a protrusion (11) is provided below the main housing (1); A handle (2) connected to the main housing (1), wherein an accommodating cavity (21) is provided at an upper end of the handle (2) and is configured to accommodate at least a portion of the protruding portion (11); and The elastic member (3) is arranged in the accommodating cavity (21), and the first inner side wall (211) of the accommodating cavity (21) presses the elastic member (3) to make it tightly abut against the first outer side wall (111) of the protruding portion (11).

2. The electric tool according to claim 1, wherein: The first outer side wall (111) is arranged along the length direction of the main shell (1), and the first inner side wall (211) is arranged along the length direction of the main shell (1); or the first outer side wall (111) is arranged along the width direction of the main shell (1), and the first inner side wall (211) is arranged along the width direction of the main shell (1); or the first outer side wall (111) is arranged along the length direction and the width direction of the main shell (1), and the first inner side wall (211) is arranged along the length direction and the width direction of the main shell (1).

3. The electric tool according to claim 2, wherein: Two first outer side walls (111) are provided and are arranged oppositely on two sides of the protruding portion (11); two first inner side walls (211) are provided and are arranged oppositely on two sides of the accommodating cavity (21); the two first outer side walls (111) and the two first inner side walls (211) are arranged oppositely, respectively, and clamp the elastic member (3).

4. The electric tool according to claim 3, wherein: A buffer gap is provided between the upper edge of the first outer side wall (111) and the upper edge of the first inner side wall (211), and the buffer gap is provided between the lower edge of the first outer side wall (111) and the lower edge of the first inner side wall (211).

5. The electric tool according to claim 3, wherein: The first inner side wall (211) is provided with a first notch (212) along the width direction of the main shell (1).

6. The electric tool according to claim 1, wherein: A limiting portion is provided on the main housing (1), a matching portion is provided in the handle (2), and the matching portion and the limiting portion are arranged so as to match the handle (2) and the main housing (1).

7. The electric tool according to claim 6, wherein: The limiting portion comprises a limiting hole (113) which is arranged on the bottom surface of the protruding portion (11) and extends along the width direction of the protruding portion (11); the matching portion comprises a limiting column (22) which is arranged inside the handle (2) and extends along the width direction of the protruding portion (11); the limiting column (22) can be inserted into the limiting hole (113) so that the handle (2) and the main shell (1) are matched.

8. The electric tool according to claim 7, wherein: There is a gap between the side wall of the limiting column (22) and the inner wall of the limiting hole (113).

9. The electric tool according to claim 1, wherein: The elastic member (3) is made of an elastic material; the elastic member (3) comprises an O-shaped elastic ring or a plurality of rubber columns; and a supporting member is arranged inside the elastic member (3).

10. The electric tool according to any one of claims 1 to 9, wherein: The first outer side wall (111) partially clamps the elastic member (3) along the height direction of the main shell (1); and the first inner side wall (211) partially clamps the elastic member (3) along the height direction of the main shell (1).

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