A power tool

Abstract

The present application provides a kind of electric tool, comprising: shell, with internal space, and the outside of the shell forms holding portion;Transmission unit, which is arranged in the shell;Actuator unit, including rotating member, hammer, elastic unit and connecting piece, the axial direction of the rotating member has a cavity, at least a part of the hammer is arranged in the cavity, one end of the connecting piece is inserted into the cavity of the rotating member, the elastic unit is forced to the hammer, so that the hammer is kept in a first position when no external force acts;The transmission unit is connected with the rotating member, to drive the rotating member to rotate;And rotating unit, which is connected with the transmission unit and is driven to rotate by the transmission unit, at least one impact block is provided on the rotating unit, the hammer has a second position, when the second position, the impact block can hit the hammer, when the first position, the impact block is away from the hammer.

Description

Technical Field

[0001] This invention relates to a power tool. Background Technology

[0002] Existing handheld tools typically include electric drills, hammer drills, and impact drills. These tools are usually single-function; for example, electric drills are only used for drilling and screwing, while hammer drills are only used for nailing. Their limited functionality fails to meet the multi-purpose needs of users, requiring them to carry multiple tools, increasing the inconvenience of using, managing, and transporting these tools.

[0003] Chinese invention patent CN103213108B, with an authorization announcement date of April 22, 2015, discloses a handheld tool, comprising: a housing; an output shaft having an axially arranged receiving hole for accommodating a working head; a working head support mechanism, at least partially disposed within the housing, the working head support mechanism having a plurality of parallelly arranged receiving spaces for supporting the working head, the working head support mechanism being adjustable to a position where at least one receiving space corresponds axially to the receiving hole; and a connecting member disposed within the housing, the connecting member being capable of driving the working head to a working position within the receiving hole or a receiving position within the working head support mechanism; characterized in that: the housing is provided with an operating member for controlling the movement of the connecting member, a gear transmission mechanism is provided between the operating member and the connecting member, the gear transmission mechanism including at least one gear, the at least one gear having a rotation axis perpendicular to a vertical plane, the operating member operablely driving the at least one gear to move, the at least one gear driving the connecting member to move linearly along the output shaft axis. However, this tool only performs the function of an electric drill, and also suffers from the same functional limitation as other existing technologies. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings in the prior art and to provide a power tool with a reasonable structural design.

[0005] The technical solution adopted by the embodiments of the present invention to solve the above problems is: a power tool, characterized in that it comprises:

[0006] A housing having an internal space, and a gripping portion formed on the exterior of the housing;

[0007] A transmission unit is disposed within the housing;

[0008] An actuating unit includes a rotating component, a hammer, an elastic unit, and a connecting component. The rotating component has an axial cavity, at least a portion of the hammer is disposed within the cavity, one end of the connecting component is inserted into the cavity of the rotating component, and the elastic unit applies force to the hammer to maintain the hammer in a first position when no external force is applied. A transmission unit is connected to the rotating component to drive the rotating component to rotate.

[0009] A rotating unit is connected to the transmission unit and driven to rotate by the transmission unit. The rotating unit is provided with at least one striking block. The hammer has a second position in which the striking block can strike the hammer, and in the first position in which the striking block is away from the hammer.

[0010] In this embodiment of the invention, the connector is provided with a limiting surface, and after the connector is inserted into the cavity, the limiting surface matches the inner wall of the rotating member to restrict the rotation of the connector relative to the rotating member.

[0011] In this embodiment of the invention, the connecting member is detachably installed on the rotating member, and when the rotating member pushes against the hammer, the hammer can be positioned in a second position.

[0012] The connector described in this embodiment of the invention is provided with a limiting boss, which matches the end face of the rotating component.

[0013] The impact block described in this embodiment of the invention has an impact surface and an exit surface. The exit surface is located outside the impact surface and has an arc surface.

[0014] The impact blocks described in this embodiment of the invention are provided in three sets and are evenly distributed on the outer periphery of the rotating unit.

[0015] The transmission unit described in this embodiment of the invention includes a motor and a gear set, wherein the motor and the gear set cooperate with each other.

[0016] The gear set described in this embodiment of the invention includes a first gear, a second gear, and a third gear. The first gear is driven by the motor, meshes with the second gear, the second gear is connected to the rotating unit, the third gear meshes with the second gear, and the third gear drives the rotating component to rotate.

[0017] The connector described in this embodiment of the invention has a positioning groove at its end, and a magnet is provided at the bottom of the positioning groove.

[0018] Embodiments of the present invention also include a battery pack disposed at the end of the housing.

[0019] Compared with the prior art, the present invention has one or more of the following advantages or effects: simple structure and reasonable design; after the connecting part is inserted into the rotating part, it can rotate with the rotating part to realize the function of drilling; when the connecting part pushes the hammer to the second position, the striking block strikes the hammer to realize the function of hammering. Thus, the functions of drilling or hammering are realized, making its functions more abundant. After the functions are increased, the user does not need to carry multiple tools to work, which also reduces the user's cost of purchasing tools. At the same time, it also brings convenience to the user in using, managing and transporting tools. The user does not need to change tools when working, which greatly improves work efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a front view structural diagram of the power tool in an embodiment of the present invention.

[0022] Figure 2 This is a cross-sectional structural diagram of the power tool in an embodiment of the present invention.

[0023] Figure 3 This is a partial cross-sectional view of the power tool in an embodiment of the present invention.

[0024] Figure 4 These are cross-sectional structural diagrams of connectors of different specifications.

[0025] Figure 5 This is a partial schematic diagram of the power tool in an embodiment of the present invention. Detailed Implementation

[0026] To facilitate understanding of the present invention, a more comprehensive description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described below. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the invention. Terms such as "axial direction," "above," and "below" used below are for clarity in indicating structural positional relationships and are not intended to limit the invention. In this invention, "vertical," "horizontal," and "parallel" are defined as including cases within ±10% of the standard definitions. For example, vertical typically refers to an angle of 90 degrees relative to a baseline, but in this invention, vertical refers to cases including those within 80 to 100 degrees.

[0027] See Figures 1 to 5 The power tool of this embodiment includes a housing 1, a transmission unit 2, an actuation unit 3, a rotation unit 4, and a battery pack 5.

[0028] In this embodiment, the housing 1 has an internal space, and a grip portion 101 is formed on the outside of the housing 1. A working end 102 is formed at one end of the grip portion 101, and the working end 102 is approximately perpendicular to the grip portion 101. The ratio of the length a of the working end 102 to the width b at the maximum point of the grip portion 101 does not exceed 2.5, 2, 1.7, 1.5, or 1.4. This controls the dimensions of the power tool along the working end 102 direction for easy storage and carrying. Furthermore, by controlling the length of the working end 102, its ease of use can be improved, and excessive torque after gripping can be avoided if the working end 102 is too long.

[0029] In this embodiment, the transmission unit 2 is disposed inside the housing 1.

[0030] The actuation unit 3 in this embodiment includes a rotating component 31, a hammer 32, an elastic unit 33, and a connecting component 34. The rotating component 31 has an axial cavity, at least a portion of the hammer 32 is disposed within the cavity, one end of the connecting component 34 is inserted into the cavity of the rotating component 31, and the elastic unit 33 applies force to the hammer 32, so that the hammer 32 remains in a first position when no external force is applied. The transmission unit 2 is connected to the rotating component 31 to drive the rotating component 31 to rotate. The elastic unit 33 can be a spring in the prior art, and its cooperation with the hammer 32 is prior art, which will not be described in detail here.

[0031] In this embodiment, the rotating unit 4 is connected to the transmission unit 2 and is driven to rotate by the transmission unit 2. The rotating unit 4 is provided with at least one striking block 41. The hammer 32 has a second position. In the second position, the striking block 41 can strike the hammer 32. In the first position, the striking block 41 is away from the hammer 32. That is to say, when the rotating unit 4 rotates, the striking block 41 cannot strike the hammer 32.

[0032] In this embodiment, the connector 34, after being inserted into the rotating member 31, can rotate with the rotating member 31 to achieve the drilling function. When the connector 34 pushes the hammer 32 to the second position, the striking block 41 strikes the hammer 32, thus achieving the hammer function. This allows for both drilling and hammering functions, enriching its functionality. When using the hammer function, one end of the connector 34 rests against the target object, while the other end pushes against the hammer 32. After the striking block 41 strikes, the hammer 32 performs a hammering action. Because the connector 34 rests against the target object and the other end rests against the hammer 32, the hammer will return to the second position, thus enabling continuous hammering.

[0033] In this embodiment, the connector 34 is provided with a limiting surface. After the connector 34 is inserted into the cavity, the limiting surface matches the inner wall of the rotating member 31 to restrict the rotation of the connector 34 relative to the rotating member 31. The outer surface of the end of the connector 34 is hexagonal (thereby forming the aforementioned limiting surface), and the inner wall of the mating point between the rotating member 31 and the connector 34 is also hexagonal. In some embodiments, when rotation of the connector 34 is not required, its outer surface can also be circular, so that the rotating member 31 does not drive the connector 34 to rotate.

[0034] In this embodiment, a magnet may be provided at the end of the hammer 32 to provide an attractive force to the connector 34 and prevent the connector 34 from falling off easily.

[0035] In this embodiment, the connector 34 is detachably installed on the rotating member 31. When the rotating member 31 pushes against the hammer 32, the hammer 32 can be positioned in the second position.

[0036] In this embodiment of the invention, a limiting boss 341 is provided on the connector 34. The limiting boss 341 matches the end face of the rotating member 31 to limit the insertion limit of the connector 34. This embodiment can provide various connectors 34. When the hammer function is required, the connector 34 is selected to have a longer insertion section (inserted into the cavity of the rotating member 41). This insertion section can push the hammer 32 to the second position. When only the drilling function is required, the connector 34 is selected to have a shorter insertion section. In this case, the connector 34 cannot push the hammer 32 to the second position, thereby achieving only the drilling function.

[0037] The striking block 41 described in this embodiment of the invention has an impact surface 411 and a retraction surface 412. The retraction surface 412 is located outside the impact surface 411 and has an arc surface to improve the smoothness of the strike.

[0038] In this embodiment, the striking blocks 41 are provided in three sets and are evenly distributed on the outer periphery of the rotating unit 4. This improves the striking efficiency.

[0039] The transmission unit 2 described in this embodiment includes a motor 21 and a gear set, wherein the motor 21 and the gear set cooperate.

[0040] The gear set described in this embodiment includes a first gear 22, a second gear 23, and a third gear 24. The first gear 22 is driven by the motor 21. The first gear 22 meshes with the second gear 23. The second gear 23 is connected to the rotating unit 4. The third gear 24 meshes with the second gear 23. The third gear 24 drives the rotating component 31 to rotate (the rotating component 31 is provided with a gear that meshes with the third gear 24 to achieve transmission).

[0041] In this embodiment, the second gear 23 is a toothed disc.

[0042] In this embodiment, the connector 34 has a positioning groove 342 at its end, and a magnet 343 is provided at the bottom of the positioning groove 342. The positioning groove 342 is used to position the nail, preventing the nail from being driven crookedly due to inaccurate positioning. The magnet 343 can also fix the nail in place, making the operation more convenient.

[0043] This embodiment also includes a battery pack 5, which is disposed at the end of the housing 1. The battery pack 5 and the working end 102 are located at opposite ends of the grip portion 101 to balance the weight at both ends.

[0044] In this embodiment, a switch is provided on the gripping part 101 for starting and stopping the motor 21 or controlling the forward and reverse rotation of the motor 21.

[0045] In this embodiment, a lighting unit 6 is provided at one end of the grip 101. The lighting unit 6 is tilted toward the working end 102 to provide lighting for convenient operation at night or in the absence of lighting.

[0046] The above description is merely illustrative of the invention. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined by the claims, all of which should fall within the protection scope of this invention.

Claims

1. A power tool, characterized in that, include: A housing having an internal space, and a gripping portion formed on the exterior of the housing; A transmission unit is disposed within the housing; An actuating unit includes a rotating component, a hammer, an elastic unit, and a connecting component. The rotating component has a cavity along its axial direction. At least a portion of the hammer is disposed within the cavity. One end of the connecting component is inserted into the cavity of the rotating component. The elastic unit applies force to the hammer, causing the hammer to remain in a first position when no external force is applied. The transmission unit is connected to the rotating component to drive the rotating component to rotate. as well as A rotating unit is connected to the transmission unit and driven to rotate by the transmission unit. The rotating unit is provided with at least one striking block. The hammer has a second position in which the striking block can strike the hammer, and in the first position in which the striking block is away from the hammer.

2. The power tool according to claim 1, characterized in that: The connector is provided with a limiting surface, and after the connector is inserted into the cavity, the limiting surface matches the inner wall of the rotating component to restrict the rotation of the connector relative to the rotating component.

3. The power tool according to claim 1 or 2, characterized in that: The connector is detachably mounted on the rotating member, and when the rotating member pushes against the hammer, the hammer can be positioned in a second position.

4. The power tool according to claim 1 or 2, characterized in that: The connector is provided with a limiting boss, which matches the end face of the rotating component.

5. The power tool according to claim 1, characterized in that: The striking block has an impact surface and a retraction surface, the retraction surface being located outside the impact surface and having an arc surface.

6. The power tool according to claim 1, characterized in that: The striking blocks are provided in three sets and are evenly distributed on the outer periphery of the rotating unit.

7. The power tool according to claim 1, characterized in that: The transmission unit includes a motor and a gear set, and the motor and the gear set are coupled together.

8. The power tool according to claim 7, characterized in that: The gear set includes a first gear, a second gear, and a third gear. The first gear is driven by the motor and meshes with the second gear. The second gear is connected to the rotating unit. The third gear meshes with the second gear and drives the rotating component to rotate.

9. The power tool according to claim 1, characterized in that: The connector has a positioning groove at its end, and a magnet is provided at the bottom of the positioning groove.

10. The power tool according to claim 1, characterized in that: It also includes a battery pack, which is disposed at the end of the housing.

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