Power tool

Abstract

This utility model relates to a power tool, comprising: a housing having a rear end face; a first recessed portion having a first mounting hole in the first recessed portion; a reinforcing member abutting against the rear end face; a striking surface and a second recessed portion having a second mounting hole on the side of the reinforcing member facing away from the rear end face; and a fastener including a fastening portion and a cap, the fastening portion being sequentially inserted into the second mounting hole and the first mounting hole to lock the reinforcing member onto the housing; the protrusion being embedded in the first recessed portion and the cap being embedded in the second recessed portion. This utility model, by adding a reinforcing member to the rear end face of the housing to replace the rear end face in striking the workpiece, avoids wear on the housing due to striking, improves the service life of the housing, and optimizes the assembly structure of the housing and the reinforcing member, minimizing the impact of the reinforcing member's assembly on the front-rear dimensions of the power tool.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to a power tool. Background Technology

[0002] Power tools, including but not limited to electric drills, electric screwdrivers, and electric wrenches, are widely used. When using power tools, operators may need to strike workpieces, such as bolts or fasteners. Operators usually use the rear end face of the power tool housing to strike the workpiece. However, the housing of power tools is usually made of plastic. If the rear end face of the housing is used directly to strike the workpiece, it can easily lead to severe wear or even deformation of the rear end face of the housing, thus affecting the use of the power tool.

[0003] Some existing power tools use a metal striking plate at the rear of the housing, which is fixed to the housing with screws. The operator can use the metal striking plate to strike the workpiece. In this design, the screws protrude outside the metal striking plate, which increases the overall length or width of the power tool and is not conducive to the miniaturization design of the power tool. Utility Model Content

[0004] Based on the aforementioned deficiencies in the existing technology, the purpose of this utility model is to provide a power tool that, by adding a reinforcing member to the rear end face of the housing, replaces the rear end face in striking the workpiece, thereby avoiding wear on the housing due to striking, improving the service life of the housing, and optimizing the assembly structure of the housing and the reinforcing member to minimize the impact of the reinforcing member assembly on the front-rear dimensions of the power tool.

[0005] Therefore, the present invention provides the following technical solution.

[0006] This utility model provides a power tool, the power tool comprising:

[0007] The housing has a rear end face; the rear end face has a first recess, and the first recess has a first mounting hole.

[0008] A reinforcing member abuts against the rear end face; the side of the reinforcing member opposite to the rear end face is provided with a striking surface and a second recess, the second recess is provided with a second mounting hole, and the second recess forms a protrusion on the side of the reinforcing member facing the rear end face;

[0009] The fastener includes a fastening part and a cap, wherein the fastening part is sequentially inserted into the second mounting hole and the first mounting hole to lock the reinforcing member onto the housing;

[0010] The protrusion is embedded in the first concave portion, and the cap is embedded in the second concave portion.

[0011] Optionally, the minimum distance between the striking surface and the second concave portion in the front-rear direction of the housing is 1mm-5mm.

[0012] Optionally, the cap is completely located within the second recess.

[0013] Optionally, the protrusion abuts against the surface of the first concave portion.

[0014] Optionally, the rear end face is formed by a first concave portion and a first abutting surface, and the side of the reinforcing member facing the rear end face is formed by a protrusion and a second abutting surface;

[0015] The second abutting surface abuts against the first abutting surface.

[0016] Optionally, the entire surface of the second abutting surface abuts against the surface of the first abutting surface.

[0017] Optionally, the number of the first recess, the second recess, and the fastener are all multiple, and each of them is configured in a one-to-one correspondence.

[0018] Optionally, the second recess is located at the peripheral edge of the reinforcing member, and the second recess is also possible. The reinforcing member is generally plate-shaped and has a uniform thickness.

[0019] And / or, the reinforcing member is a metal part.

[0020] Optionally, the housing includes a motor housing, a handle housing, and a protective housing, with the rear end face formed on the motor housing. The protective housing includes a first protective portion and a second protective portion; the first protective portion circumferentially surrounds the rear portion of the motor housing, and the second protective portion at least partially surrounds the handle housing.

[0021] The first protective part mates with the rear end face to form a groove, and the reinforcing member is snapped into the groove.

[0022] This utility model has the following technical effects:

[0023] This utility model provides a power tool that, by adding a reinforcing member to the rear end face of the housing, allows the user to strike the workpiece using the striking surface of the reinforcing member instead of the rear end face, preventing wear on the housing and extending its service life. The assembly structure of the housing and the reinforcing member is optimized by providing a second recess and a second mounting hole on the reinforcing member, allowing fasteners to be recessed for fastening. This reduces the degree of fastener protrusion from the reinforcing member or prevents the fastener from protruding beyond it. Furthermore, the formation of the second recess creates a protrusion on the side of the reinforcing member facing the rear end face, while the first recess is provided on the rear end face, allowing the protrusion to embed within the first recess. This second recess fully utilizes the internal space of the housing, avoiding unnecessary thickening of the reinforcing member due to its construction. This prevents an increase in the power tool's front-to-back dimensions caused by the thickening of the reinforcing member, minimizing the impact of the reinforcing member's assembly on the power tool's front-to-back dimensions and facilitating miniaturization. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the power tool of this utility model;

[0025] Figure 2 This is a partial structural schematic diagram of the power tool of this utility model;

[0026] Figure 3 This is a partial structural cross-sectional view of the power tool of this utility model;

[0027] Figure 4 This is an enlarged view of a partial structure of the power tool of this utility model;

[0028] Figure 5 This is an exploded view of the structure of the power tool of this utility model;

[0029] Figure 6 This is a three-dimensional structural diagram of the reinforcing member of this utility model.

[0030] Explanation of reference numerals in the attached figures

[0031] 100. Power tools;

[0032] 1. Housing; 11. Motor housing; 111. Rear end face; 1111. First recessed portion; 11111. First mounting hole; 1112. First contact surface; 12. Handle housing; 13. Protective housing; 131. First protective part; 1311. First semi-ring structure; 1312. Second semi-ring structure; 132. Second protective part; 1321. First protective handle housing; 1322. Second protective handle housing; 133. First protective housing; 134. Second protective housing; 14. Groove;

[0033] 2. Reinforcing member; 21. Striking surface; 22. Second recessed portion; 221. Second mounting hole; 23. Protrusion; 24. Second abutting surface;

[0034] 3. Fasteners; 31. Fastening parts; 32. Head cap;

[0035] 4. Motor; 5. Transmission mechanism; 51. Reduction assembly; 52. Impact assembly; 6. Output shaft. Detailed Implementation

[0036] To make the technical solution and beneficial effects of this utility model more apparent and understandable, a detailed description is provided below by listing specific embodiments. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0037] In the description of this utility model, unless otherwise expressly defined, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. That is, they should not be construed as limitations on this utility model.

[0038] In this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature specified as "first" or "second" can explicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two; "several" means at least one; unless otherwise expressly defined.

[0039] In this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] In this utility model, unless otherwise explicitly defined, the terms "above," "on top of," "above," "over," "below," "below," "below," or "below" for "first feature above second feature" can refer to direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Furthermore, "above," "above," and "over" for "first feature above second feature" can mean the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. Similarly, "below," "below," and "below" for "first feature below second feature" can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0041] In this utility model, "front," "rear," "left," "right," "up," and "down" all refer to... Figure 1 The markings in the text shall prevail.

[0042] The following is based on Figures 1 to 6 This utility model describes the power tool in detail.

[0043] In one implementation, such as Figure 3 and Figure 5 As shown, the power tool 100 includes a housing 1, a motor 4, a transmission mechanism 5, and an output shaft 6. The housing 1 forms the outer contour structure of the power tool 100. The motor 4, transmission mechanism 5, and output shaft 6 are housed within the housing 1. The output end of the motor 4 is driven by the transmission mechanism 5, and the output end of the transmission mechanism 5 is driven by the output shaft 6. The output shaft 6 is driven by a tool head (e.g., a drill bit). During operation, the rotational driving force output by the motor 4 is transmitted to the output shaft 6 through the transmission mechanism 5, causing the output shaft 6 to drive the tool head to perform operations (e.g., drilling). The transmission mechanism 5 includes a reduction assembly 51 and an impact assembly 52. ​​The reduction assembly 51 reduces the rotational speed output by the motor 4 to increase the output torque. The impact assembly 52 cooperates with the output shaft 6 to generate an impact force on the output shaft 6.

[0044] The power tool 100 can be a DC power tool, equipped with a battery pack to power the power tool 100. Alternatively, the power tool 100 can be an AC power-powered tool, equipped with a power cord to connect to the mains power supply for power supply.

[0045] like Figures 1 to 6As shown, the housing 1 has a rear end face 111, and the rear end face 111 has a first recess 1111, in which a first mounting hole 11111 is provided. The power tool 100 also includes a reinforcing member 2 and a fastener 3. The reinforcing member 2 abuts against the rear end face 111. The side of the reinforcing member 2 facing away from the rear end face 111 has a striking surface 21 and a second recess 22. The second recess 22 has a second mounting hole 221. The second recess 22 forms a protrusion 23 on the side of the reinforcing member 2 facing the rear end face 111. That is, the formation of the second recess 22 occupies the space on the side of the reinforcing member 2 facing the rear end face 111. The fastener 3 includes a fastening part 31 and a cap 32. The fastening part 31 is inserted into the second mounting hole 221 and the first mounting hole 11111 in sequence to lock the reinforcing member 2 onto the housing 1. The protrusion 23 is embedded in the first recess 1111, and the cap 32 is embedded in the second recess 22.

[0046] The above technical solution adds a reinforcing member 2 to the rear end face 111 of the housing 1. When the user needs to strike the workpiece, the striking surface 21 of the reinforcing member 2 is used to strike the workpiece instead of the rear end face 111, which avoids wear on the housing 1 due to the striking and improves the service life of the housing 1. The assembly structure of the housing 1 and the reinforcing member 2 is optimized by providing a second recess 22 and a second mounting hole 221 on the reinforcing member 2, so that the fastener 3 can be fastened in a recessed manner. This reduces the degree of protrusion of the fastener 3 outside the reinforcing member 2 or prevents the fastener 3 from protruding from the reinforcing member 2. Furthermore, the formation of the second recess 22 forms a protrusion 23 on the side of the reinforcing member 2 facing the rear end face 111, and a first recess 1111 is provided on the rear end face 111, so that the protrusion 23 is embedded in the first recess 1111. In this way, the formation of the second recess 22 makes full use of the internal space of the housing 1, avoiding unnecessary thickening of the reinforcing member 2 due to the need to provide the second recess 22. This avoids the increase in the front-rear dimension of the power tool 100 due to the thickening of the reinforcing member 2. That is, it minimizes the impact of the assembly of the reinforcing member 2 on the front-rear dimension of the power tool 100, which is conducive to the miniaturization design of the power tool 100.

[0047] In one implementation, such as Figure 5 and Figure 6 As shown, the reinforcing member 2 is roughly plate-shaped, which minimizes the space occupied by the reinforcing member 2 in the front-rear direction of the power tool 100. In addition, the thickness of the reinforcing member 2 is uniform, which ensures that the deformation resistance of each part of the reinforcing member 2 is balanced, avoiding the need to increase the thickness of local parts, which would increase the space occupied by the reinforcing member 2 in the front-rear direction of the power tool 100 and is not conducive to the miniaturization design of the power tool 100.

[0048] In one embodiment, the reinforcing member 2 is a metal part, which has high structural strength and good impact resistance.

[0049] In one embodiment, the minimum distance between the striking surface 21 and the second recess 22 in the front-rear direction of the housing 1 is 1mm-5mm.

[0050] In one implementation, such as Figure 4 As shown, the head cap 32 is completely located in the second recess 22, that is, the fastener 3 does not protrude from the reinforcing member 2. The installation of the fastener 3 will not cause an increase in the size of the power tool 100 in the front-rear direction, improve the aesthetics of the rear of the housing 1, and also prevent the user from being easily scratched by the outward protrusion of the fastener 3, thus improving the safety of use. In addition, since the head cap 32 does not protrude from the reinforcing member 2, the second recess 22 is not easy to slip when it occasionally hits the workpiece during the process of the reinforcing member 2 striking the workpiece, which is conducive to stable and convenient striking.

[0051] In one implementation, such as Figure 4 As shown, the protrusion 23 abuts against the surface of the first concave portion 1111, which increases the contact area between the reinforcing member 2 and the rear end face 111. Moreover, the reinforcing member 2 can receive more surface support from the rear end face 111. Thus, when the striking surface 21 strikes the workpiece, part of the reaction force received by the striking surface 21 is transmitted to the rear end face 111 through the striking surface 21, and part of the reaction force can be transmitted to the first concave portion 1111 through the protrusion 23, thereby improving the ability of the reinforcing member 2 to withstand external forces and thus improving the service life of the entire machine.

[0052] Furthermore, such as Figure 4 As shown, the protrusion 23 engages with the first recess 1111. This allows for two advantages: firstly, during the installation of the reinforcing member 2 onto the housing 1, the protrusion 23 is aligned and engaged with the first recess 1111, achieving pre-installation of the reinforcing member 2, followed by locking with the fastener 3. This reduces the assembly difficulty of the reinforcing member 2. Secondly, the close contact between the protrusion 23 and the first recess 1111 improves the stability of the reinforcing member 2 assembly. It should be explained that the engagement of the protrusion 23 and the first recess 1111 can be achieved by the first recess 1111 completely surrounding the protrusion 23, or by... Figure 4 As shown, the first concave portion 1111 does not completely surround the protrusion 23 circumferentially. There are at least two protrusions 23. All the protrusions 23 form a clamping structure so that the protrusions 23 and the first concave portion 1111 fit tightly together to achieve a snap-fit ​​function.

[0053] In one implementation, such as Figures 4 to 6As shown, the rear end face 111 is composed of a first concave portion 1111 and a first abutting surface 1112. The side of the reinforcing member 2 facing the rear end face 111 is composed of a protrusion 23 and a second abutting surface 24. The second abutting surface 24 abuts against the first abutting surface 1112. In this way, the first abutting surface 1112 can support the second abutting surface 24 well, thereby improving the ability of the reinforcing member 2 to withstand external forces.

[0054] Furthermore, such as Figures 4 to 6 As shown, the entire surface of the second abutting surface 24 abuts against the surface of the first abutting surface 1112, that is, the second abutting surface 24 is completely attached to the first abutting surface 1112, which increases the contact area between the reinforcing member 2 and the housing 1, and is beneficial to improving the ability of the reinforcing member 2 to withstand external forces. Specifically, in order to facilitate striking and increase the effective striking area, the striking surface 21 is usually flat. Thus, the second abutting surface 24 is preferably flat, and the reinforcing member 2 can be roughly flat, thereby minimizing the space occupied by the reinforcing member 2 in the front-rear direction of the power tool 100. In addition, the first abutting surface 1112 is also flat, which is beneficial to the second abutting surface 24 being completely attached to the first abutting surface 1112.

[0055] In one implementation, such as Figure 4 and Figure 5 As shown, there are multiple first recesses 1111, second recesses 22 and fasteners 3. The number of each of the three can be two, three or even more. The first recesses 1111, second recesses 22 and fasteners 3 are arranged in a one-to-one correspondence, which can improve the firmness of the assembly of the reinforcing member 2.

[0056] Furthermore, such as Figure 5 and Figure 6 As shown, the second recess 22 is located at the peripheral edge of the reinforcing member 2. The cross-section of the second recess 22 is U-shaped or C-shaped. Thus, the second recess 22 has openings on both sides. By reducing the number of sidewalls of the second recess 22, the space occupied by the second recess 22 on the reinforcing member 2 can be reduced. Furthermore, the second recess 22 is located at the peripheral edge of the reinforcing member 2, which facilitates the formation of a complete and large-area striking surface 21 on the reinforcing member 2, making it easier for the user to operate and strike.

[0057] In one implementation, such as Figures 1 to 5As shown, the housing 1 includes a motor housing 11, a handle housing 12, and a protective housing 13. The motor housing 11 houses the motor 4, and a rear end face 111 is formed on the motor housing 11. The handle housing 12 is located below the motor housing 11 and is used for the user to grip. The protective housing 13 includes a first protective part 131 and a second protective part 132. The first protective part 131 circumferentially surrounds the rear part of the motor housing 11, and the second protective part 132 at least partially surrounds the handle housing 12. The protective housing 13 can be a rubber shell, which can provide protection and vibration resistance.

[0058] The first protective part 131 and the rear end face 111 cooperate to form a groove 14, and the reinforcing member 2 is engaged in the groove 14. In this way, on the one hand, the first protective part 131 further limits the reinforcing member 2 to prevent the reinforcing member 2 from being displaced during use and transportation, so as to avoid affecting the striking function. On the other hand, the first protective part 131 simultaneously wraps around the rear part of the motor housing 11 and the reinforcing member 2. In this way, during the striking process, the workpiece can be prevented from contacting the circumferential surface wall of the rear part of the motor housing 11, reducing the risk of damage to the housing 1.

[0059] In one implementation, such as Figure 1 and Figure 5 As shown, the protective shell 13 has a split structure, comprising a first protective shell 133 and a second protective shell 134. The first protective shell 133 and the second protective shell 134 respectively wrap around the motor shell 11 and the handle shell 12 from the left and right sides, respectively. Specifically, the first protective part 131 includes a first semi-ring structure 1311 and a second semi-ring structure 1312, which respectively wrap around the left and right sides of the motor shell 11. The second protective part 132 includes a first protective handle shell 1321 and a second protective handle shell 1322, which respectively wrap around the left and right sides of the handle shell 1312. The first protective shell 133 includes the first semi-ring structure 1311 and the first protective handle shell 1321, and the second protective shell 134 includes the second semi-ring structure 1312 and the second protective handle shell 1322.

[0060] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations included in the claims. Various modifications and changes can be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of this utility model that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of this utility model and do not limit the scope of protection of this utility model patent.

Claims

1. A power tool, characterized in that, The power tool includes: The housing has a rear end face; the rear end face has a first recess, and the first recess has a first mounting hole. A reinforcing member abuts against the rear end face; the side of the reinforcing member opposite to the rear end face is provided with a striking surface and a second recess, the second recess is provided with a second mounting hole, and the second recess forms a protrusion on the side of the reinforcing member facing the rear end face; The fastener includes a fastening part and a cap, wherein the fastening part is sequentially inserted into the second mounting hole and the first mounting hole to lock the reinforcing member onto the housing; The protrusion is embedded in the first concave portion, and the cap is embedded in the second concave portion.

2. The power tool according to claim 1, characterized in that, The minimum distance between the striking surface and the second concave portion in the front-rear direction of the housing is 1mm-5mm.

3. The power tool according to claim 1, characterized in that, The cap is completely located within the second recess.

4. The power tool according to claim 1, characterized in that, The protrusion abuts against the surface of the first concave portion.

5. The power tool according to any one of claims 1-4, characterized in that, The rear end face is formed by a first concave portion and a first abutting surface, and the side of the reinforcing member facing the rear end face is formed by a protruding portion and a second abutting surface; The second abutting surface abuts against the first abutting surface.

6. The power tool according to claim 5, characterized in that, The entire surface of the second contact surface abuts against the surface of the first contact surface.

7. The power tool according to any one of claims 1-4, characterized in that, The number of the first recess, the second recess, and the fastener are all multiple, and each of them is configured in a one-to-one correspondence.

8. The power tool according to claim 7, characterized in that, The second recess is located at the peripheral edge of the reinforcing member, and the cross-section of the second recess is U-shaped or C-shaped.

9. The power tool according to any one of claims 1-4, characterized in that, The reinforcing member is generally plate-shaped and has a uniform thickness. And / or, the reinforcing member is a metal part.

10. The power tool according to any one of claims 1-4, characterized in that, The housing includes a motor housing, a handle housing, and a protective housing. The rear end face is formed on the motor housing. The protective housing includes a first protective part and a second protective part. The first protective part circumferentially wraps around the rear part of the motor housing, and the second protective part at least partially wraps around the handle housing. The first protective part mates with the rear end face to form a groove, and the reinforcing member is snapped into the groove.

Images