Power tool combination and auxiliary handle

Abstract

The application provides an electric tool combination, which comprises an electric tool and an auxiliary handle. The electric tool comprises a tubular housing part, and the auxiliary handle comprises two clamps and a first connecting piece extending in a first direction and connecting the two clamps. The first connecting piece is arranged opposite to the tubular housing part in a second direction perpendicular to the first direction. The tubular housing part is provided with a clamping recess, and the clamp is provided with a clamping jaw part clamped in the clamping recess. The clamping recess is provided with a first side surface, and the clamping jaw part is provided with a second side surface. The first side surface cooperates with the second side surface. In the second direction, the first side surface is closer to the first connecting piece than the second side surface. A first intersection line is formed between the first side surface and the outer surface of the tubular housing part. The tubular housing part has a cross section defined by the first direction and the second direction. The tubular housing part has a tangent line at the intersection of the first intersection line and the cross section. A second intersection line is formed between the first side surface and the cross section. An included angle α between the tangent line and the second intersection line satisfies 60°≤α<90°.

Description

Technical Field

[0001] This application relates to the field of power tool technology, and more specifically to a power tool assembly and an auxiliary handle. Background Technology

[0002] Power tools, such as screwdrivers, electric drills, hammer drills, and impact drills, which have a grip, are typically operated by the user using one hand to hold the grip. Because power tools have a certain weight and there is a distance between the grip and the torque-output attachment, especially with pistol-type power tools, it is difficult to maintain stability with only one hand when the output torque is high. This often results in a hand-swinging or twisting phenomenon, causing injury to the user's arm.

[0003] In related products, auxiliary handles or side handles are installed on power tools to allow users to support the power tools with both hands during operation. These auxiliary handles or side handles are typically installed onto the power tool housing via threaded connections or the use of auxiliary tools. However, this method of installation and removal of the auxiliary handles or side handles is complex, time-consuming, and labor-intensive.

[0004] Therefore, it is necessary to provide a new power tool combination and auxiliary handle. Utility Model Content

[0005] This application provides a power tool assembly and auxiliary handle with better structural strength and higher assembly efficiency.

[0006] On one hand, this application provides a power tool assembly including a power tool and an auxiliary handle. The power tool includes a housing, which includes a tubular housing portion and a grip portion. The grip portion is formed on or connected to the tubular housing portion. The auxiliary handle includes two calipers and a first connecting member connecting the two calipers. The two calipers are engaged with the tubular housing portion. The first connecting member extends along a first direction and is disposed opposite to the tubular housing portion along a second direction, the first direction being perpendicular to the second direction. The tubular housing portion has a holding notch, and the calipers have jaw portions that engage with the grip portion. The notch has a bottom surface and a first side surface, and the claw portion has a second side surface. The first side surface and the second side surface cooperate with each other. In the second direction, the first side surface is closer to the first connector than the second side surface. The first side surface and the outer surface of the tubular housing portion have a first intersection line. The tubular housing portion has a cross section defined by the first direction and the second direction. The tubular housing portion has a tangent at the intersection of the first intersection line and the cross section. The first side surface and the cross section have a second intersection line. The included angle α between the tangent and the second intersection line satisfies: 60°≤α<90°.

[0007] Furthermore, the included angle α satisfies: 75°≤α≤85°.

[0008] Furthermore, in the second direction, the minimum distance L between the first connector and the tubular housing portion satisfies: 2 mm ≤ L ≤ 15 mm.

[0009] Furthermore, the tubular shell portion has a center located within the cross section, a line connecting the intersection point and the center, and the cross section has an extension line passing through the center and extending along the first direction. The included angle β between the connecting line and the extension line satisfies: 20°≤β≤50°.

[0010] Furthermore, the included angle β is 25°.

[0011] Furthermore, the auxiliary handle also includes a second connector located on the side of the first connector closer to the power tool, and the second connector is used to connect the two calipers.

[0012] Furthermore, the diameter of the first connector is 11 millimeters.

[0013] Furthermore, the hardness HRC of the first connector is not less than 40.

[0014] Furthermore, the caliper is made of powder metallurgy material.

[0015] On the other hand, this application also provides an auxiliary handle, which includes two calipers and a first connector connecting the two calipers. The two calipers are used to hold a tubular housing portion of a power tool. The first connector extends along a first direction and is disposed opposite to the tubular housing portion along a second direction, the first direction being perpendicular to the second direction. The calipers are provided with claw portions, and the tubular housing portion is provided with a holding recess. The claw portions hold the holding recess. The holding recess is provided with a bottom surface and a first side surface. The claw portions are provided with a second side surface. The first side surface and the second side surface cooperate. In the second direction, the first side surface is closer to the first connector than the second side surface. A first intersection line is formed between the first side surface and the outer surface of the tubular housing portion. The tubular housing portion has a cross section defined by the first direction and the second direction. The tubular housing portion has a tangent at the intersection of the first intersection line and the cross section. A second intersection line is formed between the first side surface and the cross section. The angle α between the tangent and the second intersection line satisfies: 60°≤α<90°.

[0016] In this application, the assembly between the caliper of the auxiliary handle and the tubular housing of the power tool is more reliable and efficient, and the caliper is smaller and stronger. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the power tool assembly of this application in its first state.

[0018] Figure 2 yes Figure 1 Enlarged view of the circled area shown.

[0019] Figure 3 yes Figure 1 A cross-sectional view of the power tool assembly shown.

[0020] Figure 4 yes Figure 3 Enlarged view of the circled area shown.

[0021] Figure 5 yes Figure 1 The diagram shows the structure of the second state of the power tool assembly.

[0022] Figure 6 yes Figure 5 Enlarged view of the circled area shown.

[0023] Figure 7 yes Figure 5 A cross-sectional view of the power tool assembly shown.

[0024] Figure 8 yes Figure 7 Enlarged view of the circled area shown.

[0025] Figure 9 yes Figure 5 An exploded 3D view of the power tool assembly shown.

[0026] Figure 10 yes Figure 9 A further exploded perspective view of the power tool assembly shown. Detailed Implementation

[0027] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application.

[0028] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper" and similar terms are for ease of description only and are not limited to a location or spatial orientation. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms "connected" or "linked" and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0029] Please combine Figures 1 to 10This application provides a power tool assembly 100, which includes a power tool 10 and an auxiliary handle 20 for the power tool 10. The power tool 10 includes a housing 11, which includes a tubular housing portion 111 and a grip portion 112, the grip portion 112 being formed on or connected to the tubular housing portion 111. The auxiliary handle 20 includes two calipers 21 and a first connector 22 connecting the two calipers 21, the two calipers 21 being held in place by the tubular housing portion 111. The first connector 22 extends along a first direction X, and the first connector 22 and the tubular housing portion 111 are disposed opposite each other along a second direction Y, the first direction X being perpendicular to the second direction Y. The auxiliary handle 20 also includes a second connector 23, the second connector 23 being located on the side of the first connector 22 closer to the power tool 10, the second connector 23 being used to connect the two calipers 21. In this application, the calipers 21 are made of powder metallurgy material, a design that reduces the size of the calipers 21 and increases their strength. The diameter of the first connector 22 is 11 mm. This design improves the stress distribution between the first connector 22 and the caliper 21. The hardness of the first connector 22 is not less than HRC 40. This design prevents structural instability caused by deformation of the first connector 22.

[0030] The tubular housing portion 111 is provided with a retaining recess 113, and the caliper 21 is provided with a claw portion 211, which retains the retaining recess 113. The retaining recess 113 is provided with a bottom surface 114 and a first side surface 115, and the claw portion 211 is provided with a second side surface 212. When the claw portion 211 retains the retaining recess 113, the first side surface 115 and the second side surface 212 engage. In the second direction Y, the first side surface 115 is closer to the first connecting member 22 than the second side surface 212. The first side surface 115 and the outer surface 116 of the tubular housing portion 111 have a first intersection line A. The tubular housing portion 111 has a cross section defined by the first direction X and the second direction Y (e.g., ...). Figure 3 and Figure 7 As shown in the cross section (hereinafter the same), the tubular housing part 111 has a tangent B at the intersection point J of the first intersection line A and the cross section, and a second intersection line C between the first side surface 115 and the cross section. The included angle α between the tangent line B and the second intersection line C satisfies: 60°≤α<90°; preferably, the included angle α satisfies: 75°≤α≤85°. This design allows the caliper 21 to be reliably locked with the tubular housing part 111, while also ensuring that the tubular housing part 111 has sufficient strength.

[0031] The tubular housing portion 111 has a center O located within the aforementioned cross-section. A line D connects the intersection point J (i.e., the intersection of the first intersection line A and the cross-section) to the center O. The cross-section has an extension line E passing through the center O and extending along the first direction X. The included angle β between the connecting line D and the extension line E satisfies: 20° ≤ β ≤ 50°; preferably, the included angle β is 25°. This design reduces the distance the two calipers 21 need to be separated during assembly and disassembly of the tubular housing portion 111, improving assembly and disassembly efficiency. In the second direction Y, the minimum distance L between the first connecting member 22 and the tubular housing portion 111 satisfies: 2 mm ≤ L ≤ 15 mm; preferably, the minimum distance L is 5 mm. This design reduces the lever arm of the caliper 21 when subjected to axial force.

[0032] In this application, the caliper 21 of the auxiliary handle 20 is smaller in size and stronger, and the assembly between the caliper 21 and the tubular housing 111 of the power tool 10 is more reliable and more efficient.

[0033] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A power tool assembly comprising a power tool and an auxiliary handle, the power tool comprising a housing, the housing comprising a tubular housing portion and a grip portion, the grip portion being formed on or connected to the tubular housing portion, the auxiliary handle comprising two calipers and a first connector connecting the two calipers, the two calipers being engaged with the tubular housing portion, the first connector extending along a first direction, the first connector being disposed opposite to the tubular housing portion along a second direction, the first direction being perpendicular to the second direction; characterized in that, The tubular housing portion is provided with a retaining notch, and the caliper is provided with a claw portion. The claw portion retains itself in the retaining notch. The retaining notch is provided with a bottom surface and a first side surface. The claw portion is provided with a second side surface. The first side surface and the second side surface cooperate. In the second direction, the first side surface is closer to the first connector than the second side surface. There is a first intersection line between the first side surface and the outer surface of the tubular housing portion. The tubular housing portion has a cross section defined by the first direction and the second direction. The tubular housing portion has a tangent at the intersection of the first intersection line and the cross section. There is a second intersection line between the first side surface and the cross section. The included angle α between the tangent and the second intersection line satisfies: 60°≤α<90°.

2. The power tool assembly according to claim 1, characterized in that, The included angle α satisfies: 75°≤α≤85°.

3. The power tool assembly according to claim 1, characterized in that, In the second direction, the minimum distance L between the first connector and the tubular housing portion satisfies: 2 mm ≤ L ≤ 15 mm.

4. The power tool assembly according to claim 1, characterized in that, The tubular shell portion has a center located within the cross section, and a line connects the intersection point and the center. The cross section has an extension line passing through the center and extending along the first direction. The included angle β between the connecting line and the extension line satisfies: 20°≤β≤50°.

5. The power tool assembly according to claim 4, characterized in that, The included angle β is 25°.

6. The power tool assembly according to claim 1, characterized in that, The auxiliary handle also includes a second connector located on the side of the first connector closer to the power tool, and the second connector is used to connect the two calipers.

7. The power tool assembly according to claim 1, characterized in that, The diameter of the first connector is 11 mm.

8. The power tool assembly according to claim 1, characterized in that, The hardness (HRC) of the first connector is not less than 40.

9. The power tool assembly according to claim 1, characterized in that, The caliper is made of powder metallurgy material.

10. An auxiliary handle comprising two calipers and a first connector connecting the two calipers, the two calipers being used to hold a tubular housing portion of a power tool, the first connector extending along a first direction, the first connector and the tubular housing portion being disposed opposite each other along a second direction, the first direction being perpendicular to the second direction; each caliper having a jaw portion, the tubular housing portion having a holding recess, the jaw portion holding the holding recess, characterized in that... The retaining notch has a bottom surface and a first side surface, and the claw portion has a second side surface. The first side surface and the second side surface cooperate with each other. In the second direction, the first side surface is closer to the first connector than the second side surface. There is a first intersection line between the first side surface and the outer surface of the tubular housing portion. The tubular housing portion has a cross section defined by the first direction and the second direction. The tubular housing portion has a tangent at the intersection of the first intersection line and the cross section. There is a second intersection line between the first side surface and the cross section. The included angle α between the tangent and the second intersection line satisfies: 60°≤α<90°.

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