Power tool

Abstract

This utility model relates to a power tool, including a handle housing extending axially, a connecting assembly extending at least partially axially into the handle housing, and a power housing located axially at the rear end of the handle housing. The power housing and the handle housing are separate components, and the power housing extends at least partially into the handle housing axially. This utility model allows for the replacement of the power housing to accommodate different battery packs, making it suitable for various work scenarios and extending working time. Furthermore, the power housing and handle housing are each connected to the connecting assembly, and there is no direct connection between them, ensuring the stability of the connection between the power housing and the handle housing and reducing the risk of breakage after a drop.

Description

Technical Field

[0001] This utility model relates to an electric tool, and more particularly to an electric tool with a stable connection and adaptable to various battery packs. Background Technology

[0002] Currently, the rear handle housing and battery pack housing of most power tools on the market are integrated and non-removable, making them incompatible with other types of battery packs and resulting in low compatibility. In addition, both the handle housing and battery pack housing are made of plastic, and their excessive axial length increases the risk of breakage upon drop.

[0003] In view of the above problems, it is indeed necessary to provide a power tool to overcome the shortcomings of the prior art. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an electric tool with stable connection and adaptability to various battery packs.

[0005] The present invention can solve the existing technical problems by adopting the following technical solution: an electric tool, including a handle housing for a user to hold, a connecting assembly that extends at least partially into the handle housing in the axial direction, and a power housing located at the rear end of the handle housing in the axial direction; the power housing and the handle housing constitute a separate component, and the power housing extends at least partially into the handle housing in the axial direction.

[0006] A further improvement is that the power housing and the handle housing are respectively connected to the connecting component by fasteners, and there is no direct connection between the two.

[0007] A further improvement is as follows: the handle housing includes a first housing and a second housing fixedly connected to the first housing by the fasteners. The first housing and the second housing are symmetrically arranged opposite to a mounting plane to form a receiving cavity for accommodating at least a portion of the connecting components and the power housing.

[0008] A further improvement is that the power tool includes a first mounting portion that cooperates with the fastener to connect the first housing and the second housing, the first mounting portion being at least partially located on the outer periphery of the power housing.

[0009] A further improvement is that the power tool includes a second mounting portion for connecting at least one of the first housing and the second housing to the connection assembly, the second mounting portion being located on the front side of the power housing.

[0010] A further improvement is that the connecting component includes a through hole corresponding to the second mounting portion, and the fastener cooperates with the through hole to connect the handle housing and the connecting component.

[0011] A further improvement is as follows: the power housing includes a first portion extending into the receiving cavity and a second portion located outside the handle housing, the first portion being configured as an annular structure and fitted onto the connecting assembly.

[0012] A further improvement is as follows: the first part includes a third mounting part, and the fastener cooperates with the third mounting part to connect the power housing to the connection assembly.

[0013] A further improvement is as follows: the second part extends obliquely from the first part toward both sides and protrudes from the first part in a transverse direction perpendicular to the axial direction; the end of the first housing near the second part includes a notch, the shape of which is consistent with the shape of the second part protruding from the first part.

[0014] A further improvement is as follows: the power tool includes a battery pack installed to the power housing, a working component located at the end of the connecting assembly away from the handle housing, and a motor located within the working component.

[0015] Compared with the prior art, the present invention has the following advantages: The power housing and handle housing of the present invention are designed as separate structures, and the power housing can be replaced separately to adapt to different battery packs, which is suitable for a variety of working scenarios and can extend the working time; In addition, the power housing and handle housing are connected to the connecting components respectively and there is no direct connection between the two, which can ensure the stability of the connection between the power housing and handle housing and reduce the risk of breakage after a drop. Attached Figure Description

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structure of the power tool of this utility model;

[0018] Figure 2 yes Figure 1 The exploded view of the main handle is shown.

[0019] Figure 3 yes Figure 2 The exploded view of the power casing is shown.

[0020] Meaning of the reference numerals in the diagram:

[0021] 100 power tools, 10 working components

[0022] Connecting component 20 Through hole 21

[0023] Main handle 30 First housing 31

[0024] Second housing 32 First mounting part 33

[0025] Second Installation Section 34 Third Installation Section 35

[0026] Notch 36, Auxiliary handle 40

[0027] Trigger 50, Locking element 60

[0028] Power supply component 70 Power housing 71

[0029] Part 1 711 Part 2 712 Detailed Implementation

[0030] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the invention. It should be understood that other embodiments may also be used, and changes in mechanical composition, structure, electrical, and operation may be made without departing from the spirit and scope of the invention.

[0031] Although the terms first, second, etc., are used herein to describe various elements in some embodiments, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise.

[0032] For example, the terms "upper," "lower," "front," and "back" used below, which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of facilitating the description of this utility model and simplifying the description, and do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Please see Figure 1 As shown, the power tool 100 of this utility model can be a long-handled power tool such as a lawnmower, brush cutter, high-branch saw, high-branch shears, or long-shaft blower. The following will take a lawnmower as an example. The lawnmower includes a working component 10, a connecting component 20 connected at one end to the working component 10, a main handle 30 connected to the other end of the connecting component 20, and an auxiliary handle 40 disposed on the connecting component 20.

[0034] The working component 10 is located at the front end of the connecting component, and the working component 10 includes a head shell and a cutting component connected to the head shell, such as a grass cutter or brush cutter blade. The working component 10 also includes a motor for driving the cutting component and a fan for cooling the motor component. Both the motor and the fan are located inside the head shell.

[0035] The connecting assembly 20 includes a first connecting pipe and a second connecting pipe. The connecting assembly 20 extends axially. The first connecting pipe is connected to the working assembly 10, and the second connecting pipe is connected to the main handle 30. A connector is provided between the first connecting pipe and the second connecting pipe to connect the two connecting pipes. The two connecting pipes can be folded to facilitate the storage of the power tool 100.

[0036] The auxiliary handle 40 is located on the second connecting tube and close to the main handle 30. A horizontal protective bar is also fitted to the left side of the auxiliary handle 40 to prevent injury to the user during use. In this embodiment, the auxiliary handle 40 is designed as a D-shaped handle. The auxiliary handle 40 is fixed to the second connecting tube of the connecting assembly 20 by screws or other fasteners to assist the user in operation and reduce the user's workload.

[0037] Please see Figures 1 to 2 As shown, the power tool 100 of this utility model includes a handle housing for a user to hold. The handle housing includes a first housing 31 and a second housing 32 fixedly connected to the first housing 31 by fasteners. The connecting component 20 extends at least partially axially into the handle housing. Specifically, the first housing 31 and the second housing 32 are symmetrically arranged with respect to a mounting plane to form a receiving cavity that accommodates at least a portion of the connecting component 20 and the power housing 71.

[0038] The power tool 100 also includes a power housing 71 located axially at the rear end of the handle housing. The power housing 71 and the handle housing form a separate component, and the power housing 71 extends at least partially into the handle housing in the axial direction, that is, the power housing 71 extends at least partially into the receiving cavity formed by the first housing 31 and the second housing 32.

[0039] The power housing 71 and the handle housing are respectively connected to the connecting component 20 by fasteners, and there is no direct connection between them. The absence of a direct connection means that there is no mutual connection or snap-fit ​​structure between the power housing 71 and the handle housing to achieve the fixation between them, or that the power housing 71 and the handle housing are not fixed by fasteners such as screws, studs, or pins.

[0040] The power housing 71 and the handle housing are two detachable structures. Users can replace the power housing 71 separately to adapt to different battery packs, which is suitable for various working scenarios and can extend the working time. In addition, the power housing 71 and the handle housing are connected to the connecting component 20 respectively, and there is no direct connection between the two. This can ensure the stability of the connection between the power housing 71 and the handle housing and reduce the risk of breakage after a drop.

[0041] The power tool 100 includes a first mounting portion 33 that mates with the fasteners to connect the first housing 31 and the second housing 32. The first mounting portion 33 is at least partially located on the outer periphery of the power housing 71. The first housing 31 and the second housing 32 are fixedly connected by fasteners and at least cover a portion of the power housing 71. The first mounting portion 33 includes a portion close to the power housing 71 and another portion away from the power housing 71, and the first housing 31 and the second housing 32 are fixedly connected by the two portions of the first mounting portion 33.

[0042] The power tool 100 includes a second mounting portion 34 that connects at least one of the first housing 31 and the second housing 32 to the connection assembly 20, the second mounting portion 34 being located on the front side of the power housing 71. The connection assembly 20 is connected to the handle housing via the second mounting portion 34.

[0043] The connecting component 20 includes a through hole 21 corresponding to the second mounting portion 34, and the fastener cooperates with the through hole 21 to connect the handle housing and the connecting component 20.

[0044] The first mounting part 33 is configured to have a plurality of mounting holes on the first housing 31, the mounting holes being for fasteners such as screws to pass through. The second housing 32 is provided with a positioning post at the position corresponding to the first mounting part 33. Fasteners such as screws pass through the mounting holes and cooperate with the positioning post on the second housing 32, thereby fixing the first housing 31 to the second housing 32.

[0045] The first mounting part 33 is provided to fix the first housing 31 and the second housing 32 together to enhance stability, and the handle housing is designed as a two-part housing for easy disassembly and assembly by the user.

[0046] The second mounting part 34 is configured as a mounting hole located in the middle of the first housing 31, the mounting hole for fasteners such as screws to pass through. The connecting component 20 has a through hole 21 corresponding to the position of the second mounting part 34. The second housing 32 includes a positioning post that mates with the through hole 21. The positioning post is located in the through hole 21 and protrudes into the through hole 21 to restrict the movement of the connecting component 20 relative to the handle housing, preventing the connecting component 20 from rotating in the handle housing and affecting the assembly work.

[0047] The second housing 32 is provided with positioning posts corresponding to the positions of each mounting part. The fastener passes through the mounting hole to cooperate with the positioning post, so as to realize the fastening connection between the first housing 31 and the second housing 32.

[0048] The second mounting portion 34 on the first housing 31 connects the first housing 31, the second housing 32, and the connecting assembly 20 via the fasteners. The connecting assembly 20 has through holes 21 corresponding to the second mounting portion 34 for fasteners such as screws to pass through. The fasteners pass sequentially from the second mounting portion 34 through the through holes 21 on the connecting assembly 20 and engage with positioning posts on the second housing 32 to achieve a fixed connection between the first housing 31, the connecting assembly 20, and the second housing 32.

[0049] The power housing 71 extends at least partially into the handle housing in the axial direction. Specifically, the front end of the power housing 71 extends into the receiving cavity formed by the first housing 31 and the second housing 32. The power housing 71 includes a first portion 711 extending into the receiving cavity and a second portion 712 located outside the handle housing.

[0050] Please see Figure 2 As shown, the power housing 71 is configured as a first part 711 sleeved on the connecting assembly 20, and the first part 711 is located in the receiving cavity. After the power tool 100 is fully assembled, the first part 711 is not exposed to the outside, that is, the first part 711 is covered by the first housing 31, which is conducive to the overall simple and beautiful appearance.

[0051] The first part 711 of the power housing 71 is configured as an annular structure and is sleeved on the connecting assembly 20. The first part 711 matches the shape of the connecting assembly 20, and the first part 711 includes a third mounting part 35 for connecting the power housing 71 and the connecting assembly 20. The fastener cooperates with the third mounting part 35 to connect the power housing 71 to the connecting assembly 20.

[0052] The third mounting portion 35 is configured as a mounting hole located on the first portion 711, which is also configured as a two-part housing. The connecting component 20 extends at least partially into the power housing 71. Specifically, the connecting component 20 extends at least partially into the first portion 711, and the connecting component 20 has a through hole 21 corresponding to the position of the third mounting portion 35. Fasteners such as screws cooperate with the through hole 21 to achieve a fixed connection between the connecting component 20 and the first portion 711 of the power housing 71.

[0053] The second portion 712 of the power housing 71 extends obliquely to both sides from the first portion 711 and protrudes from the first portion 711 in a transverse direction perpendicular to the axial direction. The first portion 711 and the second portion 712 are connected but not on the same plane. The second portion 712 extends along a plane, and the plane containing the second portion 712 forms an angle with the mounting plane symmetrically arranged for the first housing 31 and the second housing 32. The plane containing the first portion 711 is parallel to the mounting plane, that is, the plane containing the first portion 711 forms an angle with the plane containing the second portion 712.

[0054] The first housing 31 has a notch 36 at one end near the second part 712. The shape of the notch 36 is substantially the same as the shape of the second part 712 protruding from the first part 711. During assembly, the notch 36 matches the second part 712, allowing the first housing 31 to directly fit against the power housing 71. Specifically, the notch 36 directly fits against the second part 712, resulting in a smoother connection between the handle housing and the power housing 71 from the overall appearance, contributing to the aesthetics and simplicity of the overall design.

[0055] The connecting assembly 20 extends at least partially into the power housing 71, and the third mounting portion 35 cooperates with the fastener to connect the connecting assembly 20 and the power housing 71. The third mounting portion 35 is configured as a mounting hole for fasteners such as screws to pass through. The fastener cooperates with the through hole 21 on the connecting assembly 20 to achieve a fixed connection between the power housing 71 and the connecting assembly 20.

[0056] The power tool 100 includes a power supply assembly 70 mounted to the power housing 71, specifically a battery pack. A control assembly is also housed within the power housing 71. The power tool 100 includes a working assembly 10 located at the end of the connecting assembly 20 away from the handle housing, and a motor located within the working assembly 10. The motor is wiredly connected to the control assembly 80. The control assembly is positioned near the electrode holder of the power supply assembly 70, facilitating electrical connection between the control assembly and the power supply assembly via a cable.

[0057] The power tool 100 also includes a switch located within a receiving cavity formed by the first housing 31 and the second housing 32, the switch cooperating with the trigger 50, the trigger 50 being at least partially located outside the handle housing, the trigger 50 including a trigger end abutting against the switch.

[0058] The power tool 100 also includes a locking member 60 located on the side of the handle housing. The locking member 60 is positioned close to the trigger 50 and is configured as a push-button type. The locking member 60 cooperates with the trigger 50 to enable dual-action start of the power tool 100. That is, when the user needs to start the machine, the locking member 60 must be operated first to release the trigger 50 into the unlocked position before it can be pressed to start the machine.

[0059] The interlocking structure between the trigger 50 and the locking member 60 is mechanical. Specifically, the portion of the trigger 50 located within the handle housing has a rib that engages with a rib on the locking member 60 located within the handle housing, thus achieving interlocking between the trigger 50 and the locking member 60. This dual-action start-up structure enhances user safety. The trigger 50 is located below the handle housing and at least partially protrudes from it. The locking member 60 is located on the side of the handle housing and is positioned close to the trigger 50. The trigger 50 is used by the user to start the machine, and the locking member 60 restricts the movement of the trigger 50 to prevent accidental activation of the machine during use.

[0060] When a user uses the power tool 100, the locking member 60 must first release the lock on the trigger 50 before the machine can be started to ensure user safety. In this embodiment, the locking member 60 and the trigger 50 are mechanically self-locking, and the locking member 60 is a push-button structure. In other embodiments, the locking member 60 may be a sliding structure, typically located near the switch trigger. In this invention, the locking form of the locking member 60 is not limited; that is, any structure that can lock the trigger 50 falls within the protection scope of this invention.

[0061] This invention integrates the rear housing arrangement structure of existing 12V and above handheld lawnmowers / brush cutters / brush saws, proposing a new separate handle and housing structure. This allows for switching between D-shaped and horn-shaped handle operation modes simply by changing the rear handle structure, thus meeting the diverse market demands for product functionality while maintaining a compact structure and aesthetically pleasing appearance. This design largely ensures design compatibility and consistency. The rear housing platform for the rear motor allows for minimal modifications and extensions to subsequent products in different market segments. Therefore, this design is of significant importance in product series development, and compared to the commonly used integrated structure, it significantly saves development resources, reduces product development costs, and shortens product development time.

[0062] The power tool of this invention allows for the replacement of the power housing to accommodate different battery packs, making it suitable for various work scenarios and extending working time. In addition, the power housing and handle housing are connected to the connecting components separately, and there is no direct connection between the two, which ensures the stability of the connection between the power housing and the handle housing and reduces the risk of breakage after a drop.

[0063] This utility model is not limited to the specific embodiments described above. The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit it. Those skilled in the art will readily understand that any modifications or changes made to the above embodiments without departing from the spirit and scope of this utility model should still be covered by the claims of this utility model. There are many alternatives to the long-handled power tools of this utility model. The scope of protection of this utility model is determined by the claims.

Claims

1. A power tool comprising a handle housing for a user to hold, a connection assembly extending at least partially axially into the handle housing, and a power housing axially located at a rear end of the handle housing; characterized in that: The power housing and the handle housing form a separate component, and the power housing extends at least partially into the handle housing in the axial direction.

2. The power tool of claim 1, wherein: The power housing and the handle housing are respectively connected to the connecting component by fasteners, and there is no direct connection between the two.

3. The power tool of claim 2, wherein: The handle housing includes a first housing and a second housing fixedly connected to the first housing by the fasteners. The first housing and the second housing are symmetrically arranged opposite to a mounting plane to form a receiving cavity that accommodates at least a portion of the connecting assembly and the power housing.

4. The power tool of claim 3, wherein: The power tool includes a first mounting portion that cooperates with the fastener to connect the first housing and the second housing, the first mounting portion being at least partially located on the outer periphery of the power housing.

5. The power tool of claim 3, wherein: The power tool includes a second mounting portion for connecting at least one of the first housing and the second housing to the connection assembly, the second mounting portion being located on the front side of the power housing.

6. The power tool of claim 5, wherein: The connecting assembly includes a through hole corresponding to the second mounting portion, and the fastener engages with the through hole to connect the handle housing and the connecting assembly.

7. The power tool of claim 3, wherein: The power housing includes a first portion extending into the receiving cavity and a second portion located outside the handle housing, the first portion being configured as an annular structure and fitted onto the connecting assembly.

8. The power tool of claim 7, wherein: The first part includes a third mounting portion, and the fastener cooperates with the third mounting portion to connect the power housing to the connection assembly.

9. The power tool of claim 8, wherein: The second portion extends obliquely to both sides from the first portion and protrudes from the first portion in a transverse direction perpendicular to the axial direction. The first housing includes a notch near the end of the second portion, the shape of which is consistent with the shape of the second portion protruding from the first portion.

10. The power tool of claim 1, wherein: The power tool includes a battery pack mounted to the power housing, a working component located at the end of the connection assembly away from the handle housing, and a motor located within the working component.

Images