A power tool

Abstract

The utility model discloses a kind of electric tools, including tool body, dust collection component, locking portion and unlocking portion.Dust collection component can be detachably installed in tool body by the way of sliding installation;Locking portion is located on dust collection component, including movable protrusion and the first elastic member for the elastic force applied to protrusion, protrusion has the locking position that stretches under the action of first elastic member, when in locking position, protrusion is suitable for stretching into the groove formed on tool body, to limit dust collection component movement along the direction of separation;Unlocking portion is located on one side of dust collection component, for driving protrusion to move to the unlocking position of separation groove, to release the locking state between dust collection component and tool body.The utility model realizes mechanical interlock by the cooperation of protrusion and groove, locking is reliable;Using the design of double inclined plane on protrusion, respectively guide smooth sliding in and smooth exit when unlocking during installation, it is labor-saving and experience is good to operate.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to an electric tool. Background Technology

[0002] During power tool operation, especially in operations that generate a lot of dust, such as hammer drills and electric hammers, dust collection devices are usually required to collect the dust. Various solutions for installing dust collection devices onto the tool body have been proposed in the existing technology.

[0003] Patent document CN104985566A discloses an electric hammer with a vacuum cleaner, which is installed vertically. It uses a guide boss to engage with a guide groove, and a vacuum cleaner rocker arm with a spring and its locking ribs to engage with a groove on the hammer's housing for locking. This design restricts the installation direction (vertical), and the locking mechanism relies on the lever action of the rocker arm and the spring. The structure is relatively intricate and may be susceptible to wear and failure.

[0004] Patent document CN222589678U discloses a power tool assembly and a dust collector that are connected by a sliding mechanism and locked using a door locking mechanism with a pivotable lock and a spring. This solution achieves a compact design through the sliding connection, but its door locking mechanism may face durability challenges under frequent disassembly, and it does not adequately address the issue of suppressing the transmission of tool vibrations to the dust collection assembly.

[0005] In summary, existing technologies for connecting dust collection components to the tool body often have room for improvement in terms of structural simplification, ease of installation, locking reliability, and vibration isolation. Therefore, there is an urgent need in the field for a power tool that offers stable connection, easy assembly and disassembly, reliable locking, and effective vibration reduction. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides an electric tool.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: A power tool, comprising: Tool body; The dust collection assembly can be detachably installed on the tool body; A locking part is provided on the side of the dust collection assembly facing the tool body, including a movable protrusion and an elastic member for supporting the protrusion; the protrusion has a locking position that extends out under the action of the elastic member, and in the locking position, the protrusion is adapted to extend into a groove formed on the tool body to restrict the movement of the tool body away from the dust collection assembly; An unlocking part is provided on one side of the dust collection assembly, which is used to drive the protrusion to move to the unlocking position where it is disengaged from the groove, so as to release the locked state between the dust collection assembly and the tool body.

[0008] Furthermore, the protrusion has a first inclined surface on the side facing the tool body, which serves as an installation guide surface; The protrusion has a second inclined surface on the side facing away from the unlocking part, which serves as an unlocking guide surface.

[0009] Furthermore, when the tool body is installed onto the dust collection assembly, the tool body can press against the first inclined surface, forcing the protrusion to overcome the elastic force of the elastic element and move away from its locked position.

[0010] Furthermore, when the tool body is installed in place and the protrusion is aligned with the groove, the protrusion enters the groove under the elastic force of the elastic element, reaching the locked position.

[0011] Furthermore, when the unlocking part drives the protrusion to move, the second inclined surface is configured to contact and engage with the edge of the groove to guide the movement of the protrusion to the unlocking position.

[0012] Furthermore, a cooperating guide structure is provided between the tool body and the dust collection assembly to limit the installation movement direction of the tool body relative to the dust collection assembly.

[0013] Furthermore, the guide structure includes a slide rail disposed on the tool body and a protrusion disposed on the dust collection assembly, wherein the cooperation between the slide rail and the protrusion restricts the installation movement direction to a single straight line direction.

[0014] Furthermore, the dust collection assembly has two abutment structures symmetrically arranged on one side facing the tool body; The abutment structure includes a rubber column for elastically abutting against the dust collection assembly when it is installed on the tool body, so as to prevent the vibration of the tool body from being transmitted to the dust collection assembly.

[0015] The advantages of this utility model over the prior art are as follows: This invention achieves mechanical interlocking through the cooperation of protrusions and grooves, ensuring reliable locking. The double-inclined surface design on the protrusions guides smooth sliding in during installation and smooth exiting during unlocking, resulting in effortless operation and a superior user experience. Compared to mechanisms like rocker levers, the locking mechanism of this invention is simpler and more compact, allowing for easy installation and locking through simple sliding and pressing actions, reducing manufacturing costs and assembly difficulty.

[0016] The sliding rail and protruding guide structure of this invention ensure the uniqueness and accuracy of the installation path, avoiding misalignment during connection. Combined with the locking mechanism of the protrusions, this results in high overall stability of the dust collection assembly after installation, preventing it from easily loosening. Furthermore, the symmetrically arranged rubber pillar abutment structure effectively isolates the transmission of severe vibrations generated by the tool body during operation to the dust collection assembly. This not only protects the internal structure of the dust collection assembly but also significantly reduces hand discomfort and noise, enhancing the overall user experience and perceived quality of the product. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the assembly of the tool body and the dust collection component in an embodiment of this utility model; Figure 2 This is a schematic diagram of the tool body in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the dust collection component in an embodiment of the present invention; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the assembly of the locking part and the unlocking part in an embodiment of this utility model; Figure 6 This is a schematic diagram of the locking part in an embodiment of the present invention.

[0018] In the picture: 1. Tool body; 11. Groove; 12. Slide rail; 2. Dust collection assembly; 21. Housing; 22. Protrusion; 3. Locking part; 31. Protrusion; 311. First inclined surface; 312. Second inclined surface; 4. Unlocking part; 41. Button; 42. Push rod; 43. Reset part; 5. Support structure. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0021] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "front," and "rear," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They 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, and therefore should not be construed as limiting the invention.

[0022] As used herein, the singular forms “a,” “an,” and “the” include plural objects, and the plural form “multiple” includes two or more objects, unless otherwise expressly indicated. As used herein, the term “or” is generally used to include the meaning of “and / or,” unless otherwise expressly indicated, and the terms “install,” “connect,” and “link” should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Connections can be direct or indirect through an intermediate medium, and can be internal communication between two components or an interaction between two components.

[0023] Please refer to Figure 1-6 This utility model provides an electric tool, taking an electric hammer as an example, which mainly includes a tool body 1, a dust collection assembly 2, a locking part 3, and an unlocking part 4.

[0024] The tool body 1 constitutes the main body of the power tool, and its interior houses a drive motor, transmission mechanism, etc. (not shown in detail in the figure). The tool body 1 typically includes a motor housing, gearbox, and handle. In this embodiment, the bottom of the tool body 1 has a flat mounting surface for docking with the dust collection assembly 2. At least one groove 11 is precisely machined on this mounting surface. This groove 11 is preferably a blind hole, but it can also be a through hole designed as needed. The contour of the hole can match the cross-sectional shape of the protrusion 31, such as a circular, rectangular, or irregularly shaped hole with guide chamfers, to provide a more stable locking contact.

[0025] In addition, at least one slide rail 12 is fixed on the tool body 1. The slide rail 12 extends along the installation direction (i.e., the front-to-back direction) of the dust collection assembly 2, and its cross-section can be dovetail-shaped, T-shaped, or a simple convex strip shape to provide precise linear guidance. The dust collection assembly 2 mainly includes a housing 21, a dust collection motor (not shown), a fan (not shown), and a dust collection chamber (not shown). The housing 21 is usually injection molded from engineering plastic, and its side abutting against the tool body 1 forms a mating surface. On this mating surface, a protrusion 22 is formed to cooperate with the slide rail 12. This protrusion 22 can be a continuous guide rail or multiple spaced protrusions, and its shape forms a sliding pair with the groove or contour of the slide rail 12, together forming a precise guiding structure to ensure that the dust collection assembly 2 can only be installed and removed along a preset straight path, effectively preventing misalignment.

[0026] like Figure 3-6 As shown, the locking part 3 is housed within a cavity inside the housing 21 of the dust collection assembly 2. It mainly consists of a protrusion 31 and an elastic element (not shown). The protrusion 31 is typically a plunger-shaped part, which may be made of metal or high-strength plastic. It is configured to slide in a matching guide hole perpendicular to the installation direction. The working end of the protrusion 31 (the end facing the tool body 1) is machined with a first inclined surface 311. The angle of this first inclined surface 311 is optimized, for example, at a 30-60 degree angle to the installation plane, to ensure that the protrusion 31 can be smoothly pressed by the edge of the tool body 1 during installation and guided to retract. The other end of the protrusion 31 (the end facing away from the tool body 1) is machined with a second inclined surface 312. The elastic element, in this embodiment, is a compression coil spring, which continuously applies a spring force towards the tool body 1 to the protrusion 31, causing it to tend to extend to the locked position. When the dust collection assembly 2 slides along the slide rail 12 to the predetermined position, the protrusion 31 is springed into the groove 11 of the tool body 1 under the action of the spring force. At this time, the side (non-sloping part) of the protrusion 31 engages with the hole wall of the groove 11 to form a reliable mechanical lock and prevent the dust collection assembly 2 from accidentally coming out.

[0027] The unlocking part 4 is an operable component located on the outside of the housing 21 of the dust collection assembly 2. In this embodiment, it includes a slidable button 41, the inner side of which is connected to a push rod 42. When the user slides or presses the button 41 in a specified direction (e.g., towards the inside of the power tool), the end of the push rod 42 pushes the protrusion 31. Due to the contact and guidance between the second inclined surface 312 and the edge of the groove 11, the protrusion 31 is subjected to a decomposed force, causing it to overcome the elastic force of the elastic element and move in the direction of disengagement from the groove 11 (i.e., the retraction direction), thereby unlocking. After unlocking, the user can pull the dust collection assembly 2 out along the slide rail 12 in the opposite direction. In addition, the unlocking part also includes a reset member 43, which is located on the side of the button 41 opposite to the protrusion 31, for resetting the button 41 and the protrusion 31.

[0028] Please refer to Figure 3 and Figure 4 In this embodiment, two abutment structures 5 are symmetrically arranged on the mating surface of the housing 21 of the dust collection assembly 2. Each abutment structure 5 includes a column made of a vibration damping material (such as rubber, thermoplastic elastomer, etc.). After the dust collection assembly 2 is installed in place, these two columns form an elastic abutment with the tool body 1 through an interference fit or close contact. Its main function is to absorb and isolate the high-frequency vibrations and impacts generated by the motor and transmission mechanism inside the tool body 1 during operation, significantly reducing the transmission of these vibrations to the dust collection assembly 2, thereby protecting the precision components inside the dust collection assembly 2 (such as the motor and fan impeller), while improving the user's operating feel and reducing noise.

[0029] The vibration damping element of the abutment structure 5 is not limited to rubber pillars. In other variations, other materials with certain elasticity and damping properties, such as polyurethane foam, silicone parts, etc., can be used, or designed into different shapes, such as wave spring washers, O-rings, etc., as long as they can play an effective vibration isolation and buffering role between the tool body 1 and the dust collection assembly 2, they all fall within the protection scope of this utility model.

[0030] Furthermore, the shape of the protrusion 31 is not limited to a plunger shape; its cross-section can be square, elliptical, or other polygonal. The shape of the groove 11 also varies accordingly. The first inclined surface 311 and the second inclined surface 312 on the protrusion 31 can also be curved surfaces (e.g., arc surfaces) or other composite curved surfaces that can achieve the guiding function.

[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the above specific embodiments. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A power tool, characterized in that, include: Tool body; The dust collection assembly can be detachably installed on the tool body; A locking part is provided on the side of the dust collection assembly facing the tool body, including a movable protrusion and an elastic member for supporting the protrusion; the protrusion has a locking position that extends out under the action of the elastic member, and in the locking position, the protrusion is adapted to extend into a groove formed on the tool body to restrict the movement of the tool body away from the dust collection assembly; An unlocking part is provided on one side of the dust collection assembly, which is used to drive the protrusion to move to the unlocking position where it is disengaged from the groove, so as to release the locked state between the dust collection assembly and the tool body.

2. The power tool according to claim 1, characterized in that: The protrusion has a first inclined surface on the side facing the tool body, which serves as an installation guide surface; The protrusion has a second inclined surface on the side facing away from the unlocking part, which serves as an unlocking guide surface.

3. The power tool according to claim 2, characterized in that: When the tool body is installed onto the dust collection assembly, the tool body can press against the first inclined surface, forcing the protrusion to overcome the elastic force of the elastic element and move away from its locked position.

4. The power tool according to claim 3, characterized in that: When the tool body is installed in place and the protrusion is aligned with the groove, the protrusion enters the groove under the elastic force of the elastic element, reaching the locked position.

5. The power tool according to claim 2, characterized in that: When the unlocking part drives the protrusion to move, the second inclined surface is configured to contact and engage with the edge of the groove to guide the movement of the protrusion to the unlocking position.

6. The power tool according to claim 1, characterized in that: A guide structure is provided between the tool body and the dust collection assembly to restrict the installation movement direction of the tool body relative to the dust collection assembly.

7. The power tool according to claim 6, characterized in that: The guide structure includes a slide rail disposed on the tool body and a protrusion disposed on the dust collection assembly. The cooperation between the slide rail and the protrusion restricts the installation movement direction to a single straight line.

8. The power tool according to claim 1, characterized in that: The dust collection assembly has two abutment structures symmetrically arranged on the side facing the tool body; The abutment structure includes a rubber column for elastically abutting against the dust collection assembly when it is installed on the tool body, so as to prevent the vibration of the tool body from being transmitted to the dust collection assembly.

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