Accessory quick-changing structure of electric tool and electric tool

Abstract

The utility model provides an accessory quick-changing structure of an electric tool, which is used for disassembling and assembling the electric tool and accessories thereof, the quick-changing structure comprises a connecting main body arranged on the electric tool, and the connecting main body can rotate on the electric tool and simultaneously perform axial linear motion. A first locking part on the electric tool can be exposed in the axial movement process of the connecting main body, the accessory can be connected to the electric tool in a sleeving mode and is connected and matched with the first locking part, and the connecting main body can reset to make contact with the accessory and limit the accessory to be disengaged from the electric tool. The nozzle can be rapidly replaced through rotation and linear motion, and meanwhile stable connection between the nozzle and the spray gun body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to an accessory quick-change structure of an electric tool. Background Art

[0002] Power tools, such as dust blowers, are new household DIY products in recent years and are widely used in all aspects of family life. This product can achieve functions such as blowing dust, inflating large game pools and balloons, cleaning filters, and cleaning narrow spaces by replacing different nozzles. For example, a high-pressure dust blower with side suction disclosed in patent number CN218775296U has a first air inlet channel and an opening and closing pin cavity connected to the upper end of the first air inlet channel processed in the gun handle of the gun body; an intermediate connecting air channel is provided between the opening and closing pin cavity and the air blowing channel; a second air inlet channel connected to the opening and closing pin cavity is longitudinally formed at the rear of the gun barrel; an opening and closing pin assembly for controlling the opening and closing of the air inlet channel is installed in the opening and closing pin cavity, and a trigger for controlling the opening and closing of the opening and closing pin assembly is hinged on the gun barrel; and a blowing nozzle is spirally installed in the orifice of the air blowing channel. It realizes a detachable connection between the nozzle and the gun body by threaded connection. This type of connection structure is prone to loosening during use and after repeated use, affecting the use effect. Utility Model Content

[0003] The utility model aims to avoid the shortcomings of the prior art and provides a quick-change structure for accessories of an electric tool which has stable connection and is easy to assemble and disassemble.

[0004] The utility model solves the technical problem by adopting the following technical scheme: a quick-change structure for accessories of an electric tool, which is used for disassembling and assembling the electric tool and its accessories, the quick-change structure comprising a connecting body arranged on the electric tool, the connecting body can perform rotational motion and axial linear motion on the electric tool at the same time, the connecting body can expose a locking portion on the electric tool during the axial movement, the accessory can be sleeved on the electric tool and connected and cooperated with the locking portion, the connecting body can be reset to contact with the accessory and limit the accessory from detaching from the electric tool.

[0005] In several embodiments, the electric tool has a connecting head, and the connecting body is disposed on the connecting head and can perform rotation and axial linear motion on the connecting head.

[0006] In several embodiments, the connecting head has a curved guide groove, and the connecting body has a guide body disposed therein. The guide body can move along the guide groove to thereby realize rotational movement and axial linear movement of the connecting body.

[0007] In several embodiments, an elastic member is provided between the connecting head and the connecting body, and the connecting body can overcome the elastic force of the elastic member to move under the action of external force, and the elastic member can drive the connecting body to return to its original position without being affected by external force.

[0008] In several embodiments, the locking portion 1 is arranged on the connecting head, and the locking portion 2 is arranged on the accessory. The accessory can move on the connecting head and thereby drive the locking portion 2 to the locking portion 1 for locking connection.

[0009] In several embodiments, the accessory can rotate on the connecting head and can move axially and linearly, and the accessory can screw the locking part 2 into the locking part 1 during the movement.

[0010] In several embodiments, a limiting protrusion is provided on the accessory, and the connecting body can abut against the limiting protrusion to thereby limit the rotational movement of the accessory.

[0011] In several embodiments, a paddle is provided on the coupling body and protrudes in a radial direction thereof, and the paddle is used for an external object to apply force and drive the coupling body to move.

[0012] And, an electric tool including the above-mentioned accessory quick-change structure.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model can realize the rapid replacement of the nozzle through rotation and linear motion, while ensuring the stable connection between the nozzle and the spray gun body.

[0015] 2. The structure of the utility model can realize automatic resetting of the connection body, reduce the manual operation steps required for installation, and improve assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are for illustrative purposes only of selected embodiments and do not represent all possible implementations, and should not be considered to limit the scope of the present invention.

[0017] Figure 1 The separation structure of the quick-change structure of the electric tool accessories in Embodiment 1 is schematically shown;

[0018] Figure 2 Schematically shows Figure 1 The enlarged structure of the middle connection head position;

[0019] Figure 3 Schematically shows Figure 1 The enlarged structure of the middle connection subject;

[0020] Figure 4 Schematically shows Figure 3 A structure in another perspective;

[0021] Figure 5 Schematically shows Figure 1 The enlarged structure of the middle accessories;

[0022] Figure 6 The partial cross-sectional structure of the accessory quick-change structure of the electric tool in Example 1 in a locked state is schematically shown. DETAILED DESCRIPTION

[0023] Below, the embodiments of the present invention are described in detail. In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Therefore, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the present invention for protection, but merely represents selected embodiments of the present invention. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0025] The terms used herein are intended to explain the embodiments and are not intended to limit and / or define the present invention.

[0026] Example 1

[0027] like Figure 1 As shown, the accessory quick-change structure of the electric tool in this embodiment is mainly used to disassemble and assemble the electric tool 10 and its accessory 20. The electric tool 10 is a dust blow gun structure, and the accessory 20 is a corresponding nozzle structure.

[0028] Combination Figure 2-Figure 6 As shown, the quick-change structure mainly includes a connecting body 30 and an elastic member 40 arranged on the electric tool 10. The electric tool 10 has a connecting head 11, with the axis of the connecting head 11 as the axial direction. Here, the accessory 20 is disassembled and assembled at the connecting head 11. The elastic member 40 is arranged between the connecting head 11 and the connecting body 30, and is a torsion spring structure, providing an elastic reset function. Here, the connecting body 30 can rotate and simultaneously perform axial linear motion at the electric tool 10, specifically at the connecting head 11. During the axial movement of the connecting body 30, a locking portion 112 on the connecting head 11 can be exposed. The accessory 20 can be sleeved on the electric tool 10 and connected and matched with the locking portion 112. The connecting body 30 can be reset to contact with the accessory 20 and limit the accessory 20 from being detached from the connecting head 11.

[0029] In addition, a curved guide groove 111 is provided on the connecting head 11, and a guide body 31 is provided in the connecting body 30. The shape of the guide groove 111 must be consistent with the travel path of the guide body 31, so that the guide body 31 can move along the guide groove 111 and thereby realize the rotational motion and axial linear motion of the connecting body 30, that is, a spiral stepping motion structure is constituted.

[0030] Furthermore, the connecting body 30 can overcome the elastic force of the elastic member 40 to move under the action of external force, and the elastic member 40 can drive the connecting body 30 to retreat to the original position in a spiral stepping manner without the action of external force.

[0031] In addition, the locking portion 112 is arranged on the connecting head 11, and the locking portion 22 is arranged on the accessory 20. The accessory 20 can move on the connecting head 11 and thereby drive the locking portion 22 to the locking portion 112 for locking connection. Specifically, the accessory 20 can rotate and axially move linearly on the connecting head 11. The accessory 20 can screw the locking portion 22 into the locking portion 112 during the movement. That is, here, the locking portion 112 is a groove structure, and its projection on the plane is roughly L-shaped. The locking portion 22 is a convex structure, so that the locking portion 22 can be pushed into the locking portion 112 and screwed into its corner position by rotation to achieve axial limiting movement.

[0032] In order to improve the locking effect, a limiting protrusion 21 is provided on the accessory 20, and the connecting body 30 can abut against the limiting protrusion 21 and thereby limit the rotational movement of the accessory 20. The corresponding end face of the connecting body 30 has an inward recess and constitutes a limiting surface 33. The limiting protrusion 21 abuts against the lowest end of the limiting surface 33, thereby limiting the rotational movement of the accessory 20. The locking part 22 cannot rotate to disengage from the locking part 1 112, and then the accessory 20 cannot continue to make axial movement to prevent falling off and achieve locking.

[0033] Furthermore, a paddle 32 is provided on the connecting body 30 and protrudes in a radial direction thereof. The paddle 32 is used for an external object such as a finger to apply force and drive the connecting body 30 to rotate.

[0034] When the utility model is in use, the connecting body 30 is first rotated in cooperation with the paddle 32 to overcome the elastic force of the elastic member 40, so that the guide body 31 moves along the guide groove 111 and then drives the connecting body 30 to perform a spiral stepping motion on the connecting head 11 toward the direction of the power tool 10 until the locking portion 112 is exposed, and then the accessory 20 is inserted into the connecting head 11 and the accessory 20 is rotated until the locking portion 22 is screwed into the locking portion 112, and then the connecting body 30 is released. Driven by the elastic member 40, the connecting body 30 retreats to abut against the accessory 20, specifically, when the limiting protrusion 21 abuts against the limiting surface 33, the locking assembly is completed. When disassembly is required, the accessory 20 can be screwed out of the connecting head 11 in combination with the above-mentioned required steps.

[0035] The examples shown in the utility model, the embodiments and special forms of the representation have been shown and described in detail in the drawings and the foregoing description, and should also be considered to be illustrative rather than restrictive. The description of special features in one embodiment does not mean that those special features are necessarily limited to that embodiment. The features of one embodiment can be used in combination with the features of other embodiments, which can be understood by those of ordinary skill in the art, whether or not explicitly described in this way. Exemplary embodiments have been shown and described, and all changes and improvements fall into the spirit of the utility model and are expected to be protected.

Claims

1. A quick-change structure for accessories of an electric tool, used for disassembling and assembling an electric tool (10) and its accessories (20), characterized in that: The quick-change structure comprises a connecting body (30) arranged on the electric tool (10); the connecting body (30) can perform rotational movement and axial linear movement on the electric tool (10) at the same time; the connecting body (30) can expose a locking portion (112) on the electric tool (10) during the axial movement; the accessory (20) can be sleeved on the electric tool (10) and connected and matched with the locking portion (112); the connecting body (30) can be reset to contact with the accessory (20) and limit the accessory (20) from being separated from the electric tool (10).

2. The quick-change structure for accessories of an electric tool according to claim 1, characterized in that: The electric tool (10) has a connecting head (11), and the connecting body (30) is arranged on the connecting head (11) and can perform rotation and axial linear motion on the connecting head (11).

3. The quick-change structure for accessories of an electric tool according to claim 2, characterized in that: The connecting head (11) is provided with a curved guide groove (111), and a guide body (31) is provided in the connecting body (30). The guide body (31) can move along the guide groove (111) to thereby realize rotational movement and axial linear movement of the connecting body (30).

4. The quick-change structure for accessories of an electric tool according to claim 3, characterized in that: An elastic member (40) is provided between the connecting head (11) and the connecting body (30); the connecting body (30) can overcome the elastic force of the elastic member (40) to move under the action of an external force; and the elastic member (40) can drive the connecting body (30) to return to its original position when no external force is applied.

5. The quick-change structure for accessories of an electric tool according to claim 4, characterized in that: The locking portion 1 (112) is arranged on the connecting head (11), and the fitting (20) is provided with a locking portion 2 (22). The fitting (20) can move on the connecting head (11) and thereby drive the locking portion 2 (22) to the locking portion 1 (112) for locking connection.

6. The quick-change structure for accessories of an electric tool according to claim 5, characterized in that: The accessory (20) can rotate on the connecting head (11) and move axially and linearly. During the movement, the accessory (20) can screw the second locking part (22) into the first locking part (112).

7. The quick-change structure for accessories of an electric tool according to claim 5, characterized in that: The accessory (20) is provided with a limiting protrusion (21), and the connecting body (30) can abut against the limiting protrusion (21) to thereby limit the rotational movement of the accessory (20).

8. The quick-change structure for accessories of an electric tool according to claim 1, characterized in that: The connecting body (30) is provided with a paddle (32) protruding in a radial direction thereof, and the paddle (32) is used for an external object to apply force and drive the connecting body (30) to move.

9. An electric tool, characterized in that: The invention comprises an accessory quick-change structure for an electric tool as described in any one of claims 1 to 8.

Images