Electric tool

Abstract

The utility model relates to an electric tool. The electric tool comprises a shell, a power source and a power source, wherein the shell comprises a main shell and a handle shell for grasping; the output shaft is accommodated in the main shell; the motor drives the output shaft to rotate; the battery is electrically connected with the motor and used for supplying power to the motor, and the battery is connected with or contained in the handle shell. The controller is electrically connected with the motor and is used for controlling the working state of the motor; the other end of the fuse is connected with the controller; a protruding limiting part is arranged on the inner wall of the handle shell and used for limiting the position of the fuse in the handle shell. According to the electric tool provided by the embodiment of the invention, the possibility that the fuse is damaged by high-frequency vibration generated when the electric tool works can be greatly reduced, and the use safety of the electric tool is further improved.

Description

Technical Field

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

[0002] Installing a fuse in a power tool is a circuit protection device that protects the power tool's safety by blowing the fuse. When the current in the power tool exceeds the fuse's rated current, the fuse will blow, thus cutting off the circuit and preventing damage to the power tool due to overload.

[0003] However, adding fuses to power tools increases the difficulty of wiring layout inside the power tool housing. Utility Model Content

[0004] In view of this, the present application provides an electric tool to solve at least one problem existing in the background art.

[0005] In a first aspect, embodiments of this application provide an electric tool, the electric tool comprising:

[0006] The housing includes a main housing and a handle housing for gripping;

[0007] The output shaft is housed within the main housing.

[0008] A motor drives the rotation of the output shaft;

[0009] A battery, electrically connected to the motor and used to power the motor, is connected to or housed in the handle housing;

[0010] A controller, electrically connected to the motor, is used to control the operating state of the motor;

[0011] A fuse, one end of which is connected to the battery and the other end of which is connected to the controller;

[0012] The inner wall of the handle housing is provided with a protruding limiting part, which is used to limit the position of the fuse in the handle housing.

[0013] In conjunction with the first aspect of this application, in an alternative embodiment, the power tool further includes:

[0014] A carrier plate is connected to the limiting part and is used to carry the fuse.

[0015] In conjunction with the first aspect of this application, in an optional embodiment, the limiting portion is a protrusion protruding from the inner wall surface of the handle housing, and the carrier plate is connected to the protrusion.

[0016] In conjunction with the first aspect of this application, in an optional embodiment, the protrusion includes a first rib and a second rib, and the two ends of the carrier plate are respectively connected to the first rib and the second rib.

[0017] In conjunction with the first aspect of this application, in an optional embodiment, the first rib is provided with a first limiting groove, the second rib is provided with a second limiting groove, and the two ends of the carrier plate are respectively connected to the first limiting groove and the second limiting groove.

[0018] In conjunction with the first aspect of this application, in an optional embodiment, the first limiting groove and / or the second limiting groove are U-shaped.

[0019] In conjunction with the first aspect of this application, in an optional embodiment, the first limiting groove and the second limiting groove are disposed opposite to each other.

[0020] In conjunction with the first aspect of this application, in an alternative embodiment, the longitudinal direction of the carrier plate forms an angle with the edge contour direction of the handle housing near the carrier plate, and the degree of the angle is less than 30°.

[0021] In conjunction with the first aspect of this application, in an alternative embodiment, the power tool further includes:

[0022] An elastic damping element is connected between the carrier plate and the protrusion.

[0023] In conjunction with the first aspect of this application, in an alternative embodiment, the fuse is connected to the carrier plate by welding.

[0024] The power tool provided in this application embodiment has a limiting part protruding from its surface on the inner wall of the handle housing. The limiting part is used to limit the position of the fuse in the handle housing, thereby greatly reducing the possibility of damage to the fuse caused by high-frequency vibration generated when the power tool is working, and further improving the safety of using the power tool.

[0025] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0027] Figure 1 A schematic diagram of the overall structure of the power tool provided in the embodiments of this application.

[0028] Figure 2A cross-sectional schematic diagram of a power tool provided in an embodiment of this application;

[0029] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0030] Figure label:

[0031] 100. Power tools;

[0032] 10. Outer shell; 11. Main shell; 12. Handle shell;

[0033] 20. Output shaft;

[0034] 30. Motor;

[0035] 40. Battery;

[0036] 50. Fuse;

[0037] 60. Limiting part; 61. Protrusion; 611. First rib; 6111. First limiting groove; 612. Second rib; 6121. Second limiting groove;

[0038] 70. Carrier plate;

[0039] 80. Speed ​​reduction mechanism. Detailed Implementation

[0040] 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. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; 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.

[0041] In the description of this utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" 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. In other words, they should not be construed as limitations on this utility model.

[0042] 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 indicate that at least one of those features is included. In the description of this utility model, "multiple" means at least two, such as two, three, etc.; "several" means at least one, such as one, two, three, etc., unless otherwise explicitly specified.

[0043] 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 part; 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.

[0044] 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.

[0045] The power tools 100 provided in this application embodiment include, but are not limited to, electric screwdrivers, electric drills, electric wrenches, and electric hammers.

[0046] In related technologies, some power tools 100 place the fuse 50 directly at the dead point of the control board or battery 40, increasing the difficulty of maintaining or repairing the fuse 50.

[0047] Currently, in order to facilitate the maintenance or repair of the fuse 50, the fuse 50 is located at the handle housing 12. However, there is a possibility that the fuse 50 may be damaged due to the high-frequency vibration when the power tool 100 is working.

[0048] Based on this, this application provides an electric tool 100, which has a limiting part 60 protruding from its surface on the inner wall of the handle housing 12. The limiting part 60 is used to limit the position of the fuse 50 in the handle housing 12, thereby greatly reducing the possibility of damage to the fuse 50 caused by the high-frequency vibration generated when the electric tool 100 is working, and further improving the safety of the electric tool 100.

[0049] For details, please refer to Figures 1 to 3 This application provides an embodiment of an electric tool 100, which includes a housing 10, an output shaft 20, a motor 30, a battery 40, a controller, and a fuse 50.

[0050] The outer casing 10 includes a main casing 11 and a handle casing 12 for gripping. The main casing 11 houses components such as a motor 30, an output shaft 20, and a reduction mechanism 80. The output shaft 20 outputs torque and rotates under the driving force of the motor 30, and the reduction mechanism 80 is used to transmit the driving force of the motor 30 to the output shaft 20.

[0051] The battery 40 is electrically connected to the motor 30 and is used to power the motor 30. The battery 40 is connected to or housed within the handle housing 12. The battery 40 provided in this embodiment is a DC power source, including but not limited to a rechargeable battery. Exemplarily, the rechargeable battery is a lithium-based battery or a nickel-cadmium battery. Furthermore, the voltage of the rechargeable battery 40 can be 4V, 12V, 20V, 48V, etc. The battery 40 is detachably connected to or housed within the handle housing 12 to facilitate replacement with a new battery 40.

[0052] The controller controls the working state of the motor 30 based on the instructions issued by the user operating the power tool 100. For example, when the user triggers the start switch, the controller sends a start command to the motor 30 to control the motor 30 to start working; when the user triggers the stop switch, the controller sends a stop command to the motor 30 to control the motor 30 to stop working.

[0053] One end of the fuse 50 is connected to the battery 40, and the other end is connected to the controller. When the current in the power tool 100 exceeds the rated current of the fuse 50, the fuse 50 will melt, thereby cutting off the electrical connection between the battery 40 and the controller and preventing the power tool 100 from being damaged due to overload.

[0054] In this embodiment, a protruding limiting part 60 is provided on the inner wall of the handle housing 12. The limiting part 60 is used to limit the position of the fuse 50 in the handle housing 12. This can greatly reduce the occurrence of damage to the fuse 50 caused by high-frequency vibration generated when the power tool 100 is working. In addition, limiting the position of the fuse 50 by the limiting part 60 can also facilitate the wiring of the fuse 50 and other wires in the handle housing 12, and improve the utilization rate of the internal space of the handle housing 12.

[0055] In an optional embodiment, the power tool 100 further includes a carrier plate 70 connected to the limiting portion 60, and the carrier plate 70 is used to carry the fuse 50. Using the carrier plate 70 to carry the fuse 50 not only limits the fuse 50, but also improves the flexibility of the fuse 50 wiring.

[0056] In an optional embodiment, the fuse 50 is embedded within the carrier plate 70. Further, the fuse 50 is welded to the carrier plate 70 to ensure a secure connection between the fuse 50 and the carrier plate 70.

[0057] In an optional embodiment, the limiting part 60 is a protrusion 61 protruding from the surface of the handle housing 12, and the carrier plate 70 is connected to the protrusion 61. The protrusion 61 provided on the inner wall surface of the handle housing 12 facilitates connection with the carrier plate 70.

[0058] Furthermore, the protrusions 61 on the inner wall surface of the handle housing 12 are injection molded together with the handle housing 12, which does not increase the manufacturing process of the handle housing 12.

[0059] In an optional embodiment, the protrusion 61 includes a first rib 611 and a second rib 612, and the two ends of the carrier plate 70 are respectively connected to the first rib 611 and the second rib 612.

[0060] It can be understood that a first rib 611 and a second rib 612 are provided on the inner wall surface of the handle housing 12. The first rib 611 and the second rib 612 respectively limit the two ends of the carrier plate 70, which can improve the connection between the carrier plate 70 and the first rib 611 and the second rib 612.

[0061] Furthermore, the first rib 611 is provided with a first limiting groove 6111, the second rib 612 is provided with a second limiting groove 6121, and the two ends of the carrier plate 70 are respectively connected to the first limiting groove 6111 and the second limiting groove 6121.

[0062] The first limiting groove 6111 and the second limiting groove 6121 can limit the position of the carrier plate 70 relative to the first protrusion 611 and the second protrusion 612, further improving the connection between the carrier plate 70 and the first protrusion 611 and the second protrusion 612.

[0063] In an optional embodiment, the first limiting groove 6111 and / or the second limiting groove 6121 are U-shaped. The U-shaped first limiting groove 6111 and / or the second limiting groove 6121 facilitate the installation of the carrier plate 70, improve the installation effect of the carrier plate 70, and also improve the connection firmness between the carrier plate 70 and the first protruding rib 611 and the second protruding rib 612.

[0064] It should be noted that the carrier plate 70 in this embodiment is a square structure, which can match the first limiting groove 6111 and / or the second limiting groove 6121 of the U-shaped structure. When the structure of the carrier plate 70 can also be other structures, the shapes of the first limiting groove 6111 and the second limiting groove 6121 can be changed according to the shape of the carrier plate 70.

[0065] In one alternative embodiment, please refer to Figure 3 The first limiting groove 6111 and the second limiting groove 6121 are arranged opposite to each other. The opposite arrangement of the first limiting groove 6111 and the second limiting groove 6121 can reduce the space occupied by the carrier plate 70, further improve the space utilization of the handle housing 12, and also improve the connection effect between the carrier plate 70 and the first protrusion 611 and the second protrusion 612.

[0066] In one alternative embodiment, please refer to Figure 3 The length direction of the carrier plate 70 forms an angle with the edge contour direction of the handle housing 12 near the carrier plate 70, and the degree of the angle is less than 30°.

[0067] The angle between the length direction of the carrier plate 70 and the edge contour direction of the handle housing 12 is less than 30°, which can make better use of the ribbon cable and improve the space utilization of the handle housing 12.

[0068] Preferably, the length direction of the carrier plate 70 is parallel to the edge contour direction of the handle housing 12 to further improve the convenience of cable routing and improve the space utilization of the handle housing 12.

[0069] The carrier plate 70 is in hard contact with the first rib 611 and the second rib 612. The high-frequency vibration generated during the operation of the power tool 100 can easily affect the connection between the carrier plate 70 and the first rib 611 and the second rib 612.

[0070] Based on this, an elastic damping element is connected between the carrier plate 70 and the first rib 611 and the second rib 612. The elastic damping element enables a soft connection between the carrier plate 70 and the first rib 611 and the second rib 612, which can greatly reduce the situation where the high-frequency vibration generated when the power tool 100 is working causes the pins to loosen, thereby leading to circuit failure.

[0071] Elastic damping components include, but are not limited to, sponges, rubber, and felt.

[0072] Preferably, the elastic damping element is bonded to the carrier plate 70 and the surfaces of the first rib 611 and the second rib 612 using an adhesive, thereby achieving the connection between the elastic damping element and the carrier plate 70, as well as the connection between the elastic damping element and the first rib 611 and the second rib 612. Furthermore, the carrier plate 70 is connected to the first rib 611 and the second rib 612 and abuts against the surface of the elastic damping element, ensuring a firm connection between the elastic damping element and the carrier plate 70, the first rib 611, and the second rib 612.

[0073] 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 application that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of this application and do not limit the scope of protection of this patent application.

Claims

1. A power tool (100), characterized in that, The electric tool (100) comprises: a housing (10) comprising a main housing (11) and a handle housing (12) for gripping; an output shaft (20) accommodated in the main housing (11); a motor (30) driving rotation of the output shaft (20); a battery (40) electrically connected to the motor (30) and used for supplying power to the motor (30), the battery (40) being connected to or accommodated in the handle housing (12); a controller electrically connected to the motor (30) and used for controlling the working state of the motor (30); a fuse (50) having one end connected to the battery (40) and the other end connected to the controller; wherein an inner wall of the handle housing (12) is provided with a protruding limiting portion (60), and the limiting portion (60) is used for limiting the position of the fuse (50) in the handle housing (12).

2. The power tool (100) according to claim 1, characterized in that The electric tool (100) further comprises: a carrier plate (70) connected to the limiting portion (60) and used for carrying the fuse (50).

3. The power tool (100) according to claim 2, characterized in that The limiting portion (60) is a protrusion (61) protruding from the inner wall surface of the handle housing (12), and the carrier plate (70) is connected to the protrusion (61).

4. The power tool (100) according to claim 3, characterized in that The protrusion (61) comprises a first protruding rib (611) and a second protruding rib (612), and two ends of the carrier plate (70) are respectively connected to the first protruding rib (611) and the second protruding rib (612).

5. The power tool (100) according to claim 4, characterized in that The first protruding rib (611) is provided with a first limiting groove (6111), and the second protruding rib (612) is provided with a second limiting groove (6121), and two ends of the carrier plate (70) are respectively connected to the first limiting groove (6111) and the second limiting groove (6121).

6. The power tool (100) according to claim 5, characterized in that The first limiting groove (6111) and / or the second limiting groove (6121) have a U-shaped structure.

7. The power tool (100) according to claim 5, characterized in that The first limiting groove (6111) and the second limiting groove (6121) are oppositely arranged.

8. The power tool (100) according to claim 4, characterized in that The length direction of the carrier plate (70) and the edge contour direction of the handle housing (12) close to the carrier plate (70) form an included angle, and the degree of the included angle is less than 30°.

9. The power tool (100) according to claim 3, characterized in that The electric tool (100) further comprises: a resilient damping member connected between the carrier plate (70) and the protrusion (61).

10. The power tool (100) according to any one of claims 2 to 9, characterized in that The fuse (50) is embedded in the carrier plate (70) and is connected to the carrier plate (70) by welding.

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