Quick-release dust collection device and electric tool

Abstract

The utility model discloses a quick-release dust collecting device, which belongs to the technical field of electric tools, solves the problem that a dust collecting device in the prior art is loosened due to false triggering, and adopts the technical scheme that the quick-release dust collecting device mainly comprises a dust outlet pipe, a dust collecting bag, a first pipe section and a second pipe section which can be sleeved on the outer side of the first pipe section, the first pipe section is arranged on one of the dust outlet pipe and the dust collection bag, the second pipe section is arranged on the other one of the dust outlet pipe and the dust collection bag, the first pipe section and the second pipe section rotate mutually to achieve connection or separation so as to achieve connection or separation between the dust outlet pipe and the dust collection bag, and a protective sleeve is arranged on the first pipe section in a sliding mode. The sheath is provided with a locking position for locking the first pipe section and the second pipe section to limit the rotation of the first pipe section and the second pipe section and an unlocking position for allowing the rotation of the first pipe section and the second pipe section. The dust collection device is mainly used for effectively reducing the situation that the dust collection device is loosened due to false triggering. The utility model further discloses an electric tool.

Description

Technical Field

[0001] The utility model relates to the technical field of power tools, in particular to a quick-release dust collection device and a power tool. Background Art

[0002] In the prior art, the dust collection structure of power tools usually provides interference fit or steel ball limit. For example, the utility model patent CN216463983U discloses a quick-disassembly dust collection device and its power tool, including a dust collection bag, a fixed pipe arranged at the opening of the dust collection bag, a joint connected to the fixed pipe, and the joint is connected to the dust outlet pipe. The joint includes a first interface connected to the fixed pipe and a second interface connected to the dust outlet pipe. A first quick-disassembly structure is arranged between the first interface and the fixed pipe. The first quick-disassembly structure includes at least two first mounting holes arranged on the outer side wall of the first interface, elastic members at least partially located in the first mounting holes, and the elastic members at least partially protrude from the inner side of the first mounting holes and press the fixed pipe. The elastic members can expand and contract radially relative to the first interface, and with only a small force, the dust collection device can be easily disassembled and assembled. However, during use, when the user accidentally touches the first quick-disassembly structure, the dust collection device has a risk of loosening. Content of the Utility Model

[0003] The purpose to be achieved by the utility model is to provide a quick-release dust collection device, which solves the problem that the dust collection device in the prior art is accidentally triggered and loosened, effectively reduces the situation where the dust collection device is accidentally triggered, and improves the use stability of the dust collection device.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: A quick-release dust collection device includes a dust outlet pipe and a dust collection bag. The dust outlet pipe is connected to a power tool. The quick-release dust collection device further includes a first pipe section and a second pipe section that can be sleeved outside the first pipe section. The first pipe section is arranged on one of the dust outlet pipe and the dust collection bag, and the second pipe section is arranged on the other of the dust outlet pipe and the dust collection bag. The first pipe section and the second pipe section rotate relative to each other to achieve connection or separation, thereby realizing the connection or separation between the dust outlet pipe and the dust collection bag. A sheath is slidably arranged on the first pipe section. The sheath has a locking position for locking the first pipe section and the second pipe section to limit the rotation of the first pipe section and the second pipe section, and an unlocking position for allowing the first pipe section and the second pipe section to rotate. The sheath can slide relative to the first pipe section to switch between the locking position and the unlocking position.

[0005] After adopting the above technical solution, the utility model has the following advantages: By setting the sheath, the disassembly of the dust collection bag requires first the axial movement of the sheath, and then the rotation of the dust collection bag or the dust outlet pipe. The two steps are used to unlock. By setting specific unlocking steps, it can guide users to complete the disassembly quickly and accurately, improve work efficiency, and ensure that the dust collection bag can only be unlocked and disassembled under the correct operation sequence, reducing the risk of improper operation and accidental triggering, effectively ensuring that the dust collection bag will not accidentally fall off during the working state, and ensuring the stability and safety of the dust collection device.

[0006] Further, a circumferentially extending first limiting groove is provided on the outer wall of the first pipe section, and a first limiting rib is provided on the inner wall of the second pipe section. The first pipe section and the second pipe section rotate relative to each other so that the first limiting rib is engaged with or disengaged from the first limiting groove to achieve connection or separation.

[0007] Adopting the foregoing technical solution, the cooperation between the first limiting rib and the first limiting groove can ensure the firm connection between the first pipe section and the second pipe section. Through a simple rotation operation, users can easily connect or separate the two pipe sections without additional tools, improving the convenience and work efficiency of the operation.

[0008] Further, a second limiting groove is provided on the sheath, and a second limiting rib is provided on the second pipe section. When the sheath is in the locked position, the second limiting rib is engaged with the second limiting groove to limit the relative rotation of the first pipe section and the second pipe section. When the sheath is in the unlocked position, the second limiting rib is disengaged from the second limiting groove to allow the first pipe section and the second pipe section to rotate relative to each other.

[0009] Adopting the foregoing technical solution, when the sheath is in the locked position, the cooperation between the second limiting rib and the second limiting groove can ensure that the first pipe section and the second pipe section will not accidentally separate. Even if vibrations or collisions are encountered during the operation, the stability of the connection can be maintained. The sliding operation of the sheath is simple and intuitive. Users can easily lock or unlock by sliding the sheath without using tools, improving the convenience of the operation.

[0010] Further, an elastic member is sleeved on the first pipe section, a convex rib is provided on the first pipe section, one end of the elastic member abuts against the convex rib, and the other end of the elastic member abuts against the sheath. The elastic member provides a restoring force for the sheath to return to the locked position.

[0011] Adopting the foregoing technical solution, the restoring force of the elastic member ensures that the sheath will automatically return to the locked position when there is no external force. This reduces the risk of forgetting to lock the connection, improves the safety of the operation. Users only need to push the sheath to the unlocked position for disassembly and assembly operations, and the elastic member will automatically push the sheath back to the locked position after release, simplifying the operation steps and improving the efficiency.

[0012] Further, a third limiting groove extending along the axial direction of the first pipe section is provided on the first pipe section, and a third limiting rib that can extend into the third limiting groove is provided on the sheath. The groove wall of the third limiting groove restricts the axial movement range of the third limiting rib.

[0013] With the foregoing technical solution, the movement range of the sheath is limited, and the user does not need to worry about the problem of excessive sliding or difficult positioning of the sheath during operation, improving the convenience and efficiency of operation.

[0014] Further, a first opening is provided on the groove wall of the third limiting groove in the circumferential direction of the first pipe section. The sheath can rotate relative to the first pipe section so that the third limiting rib moves out of the third limiting groove from the first outlet.

[0015] With the above technical solution, the user can control the entry and exit of the third limiting rib by rotating the sheath to disassemble the sheath from the first pipe section, which is convenient for later maintenance.

[0016] Further, the first opening is located at the middle position of the groove wall in the axial direction of the first pipe section.

[0017] With the above technical solution, placing the first opening at the middle position can be designed so that the sheath can only be disassembled from the first pipe section when the sheath moves to a specific position, which can reduce the situation of accidental disassembly caused by randomly rotating the sheath and increase safety.

[0018] Further, the first limiting groove includes a second opening for the first limiting rib to enter and exit the first limiting groove. A channel for the first limiting rib to enter and exit the second opening and the third limiting rib to enter and exit the first opening is provided between the first opening and the second opening.

[0019] With the above technical solution, through the guidance of the channel, the user can more intuitively operate the entry and exit of the first limiting rib and the third limiting rib, simplifying the operation process and improving the operation efficiency.

[0020] Further, the sizes of the first opening and the second opening are different.

[0021] With the above technical solution, the design of openings with different sizes can ensure that the first limiting rib and the third limiting rib can only enter and exit the corresponding limiting grooves from the corresponding openings. The foolproof design reduces the incorrect connection or disconnection caused by improper operation.

[0022] Another object of the present utility model is to disclose a power tool, which includes a main body and a quick-release dust collection device installed on the main body. The quick-release dust collection device is the quick-release dust collection device described in any one of the above embodiments.

[0023] By adopting the above technical solution, the situation that the connection structure of the dust collection device is accidentally triggered is effectively reduced, the use stability of the dust collection device is improved, and thus the use stability of the power tool is improved. Description of the Drawings

[0024] The present utility model will be further described below with reference to the accompanying drawings:

[0025] Figure 1 It is a schematic structural diagram of a quick-release dust collection device in a locked state in the present utility model;

[0026] Figure 2 It is a cross-sectional view of a quick-release dust collection device in a locked state in the present utility model;

[0027] Figure 3 It is a cross-sectional view of a quick-release dust collection device in a locked state from another perspective in the present utility model;

[0028] Figure 4 It is an exploded view of the quick-release dust collection device in the present utility model;

[0029] Figure 5 It is a schematic structural diagram of a quick-release dust collection device in a first-step unlocking state in the present utility model;

[0030] Figure 6 It is a schematic structural diagram of a quick-release dust collection device in a second-step unlocking state in the present utility model;

[0031] In the figure, 100, dust outlet pipe; 110, first pipe section; 120, first limiting groove; 130, third limiting groove; 140, first opening; 150, second opening; 160, channel; 170, rib; 200, dust collection bag; 210, second pipe section; 220, first limiting rib; 230, second limiting rib; 300, sheath; 310, second limiting groove; 320, third limiting rib; 330, first section; 340, second section; 400, elastic member. Detailed Embodiments

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0033] In the description and claims of this utility model and the above-mentioned drawings, terms such as "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this utility model described herein can be implemented in an order other than those illustrated or described herein.

[0034] It should be understood that in various embodiments of this utility model, regarding the magnitudes of the sequence numbers of each process, it does not mean the sequence of execution is prior or subsequent. The execution sequence of each process should be determined by its function and internal logic and should not constitute any limitation to the implementation process of the embodiments of this utility model.

[0035] It should be understood that in this utility model, "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0036] It should be understood that in this utility model, "a plurality of" means two or more. "And / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, X and / or Y can represent: X exists alone, X and Y exist simultaneously, and Y exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "Comprising X, Y, and Z" and "comprising X, Y, Z" mean that all of X, Y, and Z are included. "Comprising X, Y, or Z" means that one of X, Y, and Z is included. "Comprising X, Y, and / or Z" means that any one or any two or all three of X, Y, and Z are included.

[0037] The technical solutions of this utility model will be described in detail below with specific embodiments. These several specific embodiments below can be combined or replaced according to the actual situation, and the same or similar concepts or processes may not be repeated in some embodiments.

[0038] Embodiment 1:

[0039] As Figures 1 to 6As shown, the utility model provides a quick-detachable dust collecting device, including a dust outlet pipe 100 and a dust collecting bag 200. The dust outlet pipe 100 is connected to the electric tool. The quick-detachable dust collecting device also includes a first pipe section 110 and a second pipe section 210 that can be sleeved on the outside of the first pipe section 110. The first pipe section 110 is arranged on the dust outlet pipe 100, and the second pipe section 210 is arranged on the dust collecting bag 200. The first pipe section 110 and the second pipe section 210 rotate with each other to achieve connection or separation to achieve connection or separation between the dust outlet pipe 100 and the dust collecting bag 200. This greatly simplifies the disassembly and assembly process of the dust collecting device and improves work efficiency, especially in a working environment where the dust collecting bag 200 needs to be cleaned frequently. In order to reduce the situation of accidental disassembly and assembly of the dust collecting device, a sleeve 300 is slidably provided on the first pipe section 110. The sleeve 300 has a locking position for locking the first pipe section 110 and the second pipe section 210 to limit the rotation of the first pipe section 110 and the second pipe section 210 and an unlocking position for allowing the first pipe section 110 and the second pipe section 210 to rotate. The sleeve 300 slides relative to the first pipe section 110 and can switch between the locking position and the unlocking position, so that the disassembly of the dust bag 200 requires first axial movement of the sleeve 300 and then rotation of the dust bag 200 or the dust outlet pipe 100, which are two steps for unlocking. By setting specific unlocking steps, the user can be guided to complete the disassembly quickly and accurately, thereby improving work efficiency. It can also ensure that the dust bag 200 can be unlocked and disassembled only in the correct operating sequence, thereby reducing the risk of improper operation and false triggering, effectively ensuring that the dust bag 200 will not accidentally fall off in the working state, and ensuring the stability and safety of the dust collecting device.

[0040] In order to achieve the connection between the first pipe segment 110 and the second pipe segment 210, a first limiting groove 120 extending circumferentially is provided on the outer wall of the first pipe segment 110, and a first limiting rib 220 is provided on the inner wall of the second pipe segment 210. The first pipe segment 110 and the second pipe segment 210 are rotated relative to each other so that the first limiting rib 220 is engaged in or disengaged from the first limiting groove 120 to achieve connection or separation. The user can easily connect or separate the two pipe segments without the need for additional tools, thereby improving the convenience of operation and work efficiency.

[0041] The first limiting groove 120 includes a second opening 150 for the first limiting rib 220 to enter and exit the first limiting groove 120 . The first limiting rib 220 is inserted into or detached from the first limiting groove 120 through the second opening 150 , which clarifies the path of the first limiting rib 220 .

[0042] In order to more reliably lock the first pipe section 110 and the second pipe section 210, a second limiting groove 310 is provided on the sheath 300, and a second limiting rib 230 is provided on the second pipe section 210. When the sheath 300 is in the locked position, the second limiting rib 230 is inserted into the second limiting groove 310 to limit the mutual rotation of the first pipe section 110 and the second pipe section 210. When encountering vibration or collision during operation, the stability of the connection can be maintained. When the sheath 300 is in the unlocked position, the second limiting rib 230 is disengaged from the second limiting groove 310 to allow the first pipe section 110 and the second pipe section 210 to rotate relative to each other. The sliding operation of the sheath 300 is simple and intuitive. The user can easily lock or unlock by sliding the sheath 300 without using tools, thereby improving the convenience of operation.

[0043] Furthermore, two second limiting grooves 310 are provided on the sheath 300, and two second limiting ribs 230 are provided on the second pipe section 210 to form two-point limiting for the second pipe section 210, thereby further improving the connection reliability between the dust collecting bag 200 and the dust outlet pipe 100. Of course, the number of the second limiting grooves 310 and the second limiting ribs 230 can also be set to three, four, five or other appropriate numbers to form multiple limiting effects.

[0044] In order to further improve the safety of the dust collecting device, an elastic member 400 is sleeved on the first pipe section 110, and a convex rib 170 is provided on the first pipe section 110. One end of the elastic member 400 abuts against the convex rib 170, and the other end of the elastic member 400 abuts against the sleeve 300. The elastic member 400 provides a force for the sleeve 300 to return to the locked position. The restoring force of the elastic member 400 ensures that the sleeve 300 will automatically return to the locked position when there is no external force. This reduces the risk of forgetting to lock the connection and improves the safety of operation. The user only needs to push the sleeve 300 to the unlocked position for disassembly and assembly. After release, the elastic member 400 will automatically push the sleeve 300 back to the locked position, which simplifies the operating steps and improves efficiency.

[0045] It should be noted that the first tube section 110 is not limited to being provided with the ribs 170 to abut against the elastic member 400, but may also be provided with grooves to abut against the elastic member 400. The elastic member 400 may be a coil spring, a rubber spring, or the like.

[0046] In order to facilitate unlocking and locking, the groove wall of the second limiting groove 310 includes a first section 330 and a second section 340 along the axial direction of the first tube section 110. The second section 340 has a gentler inclination angle than the first section 330. The second section 340 is closer to the notch of the second limiting groove 310 than the first section 330. If the dust bag 200 is directly rotated, the first section 330 can effectively limit the second limiting rib 230, and the second limiting rib 230 is difficult to be separated from the second limiting groove 310. When the sheath 300 is axially moved, if the sheath 300 is not accurately moved to the unlocking position, the dust bag 200 is rotated at this time. Due to the inclination angle of the second section 340, the second limiting rib 230 will gradually slide into or move out of the second limiting groove 310, reducing the disassembly resistance and making the operation smoother.

[0047] In order to limit the sliding range of the sleeve 300, the first pipe segment 110 is provided with a third limiting groove 130 extending axially along the first pipe segment 110, and the sleeve 300 is provided with a third limiting rib 320 that can extend into the third limiting groove 130. The groove wall of the third limiting groove 130 limits the axial movement range of the third limiting rib 320. The user does not need to worry about the excessive sliding or difficulty in positioning of the sleeve 300 during operation, thereby improving the convenience and efficiency of operation.

[0048] Among them, the groove wall of the third limiting groove 130 includes a front groove wall located on the front side, a rear groove wall located on the rear side, and a side groove wall located between the front groove wall and the rear groove wall. When the third limiting rib 320 abuts against the front groove wall, the cover 300 is located in the locked position. When the third limiting rib 320 abuts against the rear groove wall, the cover 300 is located in the unlocked position. The front groove wall and the rear groove wall provide a clear stopping point for the third limiting rib 320. The operator can clearly feel the change in position, which provides good operational feedback, increases the intuitiveness and accuracy of the operation, ensures the stability of the cover 300 in the locked and unlocked positions, and avoids unclear positions.

[0049] In addition, a first opening 140 is provided on the groove wall of the third limiting groove 130 in the circumferential direction of the first pipe section 110, and the sleeve 300 can be rotated relative to the first pipe section 110 to move the third limiting rib 320 out of the third limiting groove 130 from the first outlet. The user can control the entry and exit of the third limiting rib 320 by rotating the sleeve 300 to remove the sleeve 300 from the first pipe section 110, which is convenient for later maintenance.

[0050] In order to prevent the sleeve 300 from accidentally falling off, the first opening 140 is located in the middle position of the groove wall along the axial direction of the first pipe segment 110, specifically, in the middle position of the side groove wall. The sleeve 300 can only be removed from the first pipe segment 110 when it is moved to a specific position. This can reduce the situation of accidental disassembly caused by arbitrary rotation of the sleeve 300, thereby increasing safety.

[0051] In order to guide the third limiting rib 320 to enter and exit the first opening 140, a channel 160 for the first limiting rib 220 to enter and exit the second opening 150 and the third limiting rib 320 to enter and exit the first opening 140 is provided between the first opening 140 and the second opening 150. Users can operate the entry and exit of the first limiting rib 220 and the third limiting rib 320 more intuitively, simplifying the operation process and improving the operation efficiency.

[0052] Moreover, in order to prevent the incorrect installation of the first limiting rib 220 and the third limiting rib 320, the sizes of the first opening 140 and the second opening 150 are different. The design of openings with different sizes can ensure that the first limiting rib 220 and the second limiting rib 230 can only enter and exit the corresponding limiting grooves from the corresponding openings. The foolproof design reduces the incorrect connection or disconnection caused by improper operation.

[0053] Furthermore, rotation marks and pushing marks can also be set on the dust collection bag 200 and the sheath 300, enabling users to remove the dust collection bag 200 more intuitively and correctly.

[0054] When disassembling the dust collection bag 200, as Figure 5 shown, in the first step, the user axially pushes the sheath 300 to disengage the second limiting rib 230 from the second limiting groove 310. At this time, the dust collection bag 200 can rotate; as Figure 6 shown, in the second step, the user rotates the dust collection bag 200 to move the first limiting rib 220 out of the first limiting groove 120, and then axially pulls the dust collection bag 200 to remove the dust collection bag 200. This can guide the user to complete the disassembly quickly and accurately, improve work efficiency, and also ensure that the dust collection bag 200 can only be unlocked and disassembled in the correct operation sequence, reducing the risks of improper operation and accidental triggering, and effectively ensuring that the dust collection bag 200 will not accidentally fall off during the working state.

[0055] When installing the dust collection bag 200, the user axially pushes the dust collection bag 200 to axially insert the first limiting rib 220 into the channel 160. At the same time, the user pushes the sheath 300 to place the sheath 300 in the unlocking position, then rotates the dust collection bag 200 to engage the first limiting rib 220 with the first limiting groove 120, and then releases the sheath 300. The sheath 300 moves under the action of the elastic member 400 to engage the second limiting rib 230 with the second limiting groove 310, realizing the installation of the dust collection bag 200.

[0056] It can be understood that in other embodiments, the first pipe section is provided on the dust collection bag, and the second pipe section is provided on the dust outlet pipe.

[0057] It can be understood that in other embodiments, the first limiting groove can also be a rotating groove. When installing the dust collection bag, only by rotating the dust collection bag can the first limiting rib enter the first limiting groove, without axially pushing the dust collection bag.

[0058] It can be understood that in other embodiments, the first pipe section and the second pipe section can also be connected by threads. Threaded connections can provide a very stable and tight connection, ensuring that the two parts will not accidentally separate during operation, which is particularly important for equipment that needs to withstand high pressure or vibration. Secondly, threaded connections can usually provide good sealing performance to prevent liquid or gas leakage. In addition, threaded connections allow the first pipe section and the second pipe section to be disassembled and reconnected multiple times, which is relatively convenient for disassembly and assembly.

[0059] It can be understood that in other embodiments, the first opening can also be located at other suitable positions on the side groove wall except for the positions adjacent to the front groove wall and the rear groove wall.

[0060] It can be understood that in other embodiments, channels can also be separately provided on the first pipe section at the positions of the first opening and the second opening. While playing a guiding role, it can further reduce the possibility of installation errors of the first limiting rib and the third limiting rib.

[0061] Embodiment 2:

[0062] This embodiment discloses a power tool, which includes a main body and a quick-release dust collection device installed on the main body. The quick-release dust collection device is the quick-release dust collection device in Embodiment 1, which can effectively reduce the situation that the connection structure of the dust collection device is accidentally triggered and improve the use stability of the dust collection device.

[0063] As Figures 1 to 6 shown, the power tool can be a sander, which can improve the use stability of the sander and also facilitate the quick removal of the dust collection bag 200 to meet the use scenario with a high frequency of dust cleaning.

[0064] Of course, the power tool can also be a vacuum cleaner, a grinding machine, etc.

[0065] In addition to the above preferred embodiments, the present invention has other implementation manners. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection claimed by the present invention.

Claims

1. A quick-release dust collection device, comprising a dust outlet pipe (100) and a dust collection bag (200), wherein the dust outlet pipe (100) is connected to an electric tool, characterized in that: The quick-detachable dust collecting device further comprises a first pipe section (110) and a second pipe section (210) which can be sleeved on the outside of the first pipe section (110); the first pipe section (110) is arranged on one of the dust outlet pipe (100) and the dust collecting bag (200); the second pipe section (210) is arranged on the other of the dust outlet pipe (100) and the dust collecting bag (200); the first pipe section (110) and the second pipe section (210) rotate with each other to achieve connection or separation, thereby achieving connection between the dust outlet pipe (100) and the dust collecting bag (200). The invention relates to a method for connecting or separating bags (200), wherein a protective sleeve (300) is slidably provided on the first pipe segment (110), and the protective sleeve (300) has a locking position for locking the first pipe segment (110) and the second pipe segment (210) to limit the rotation of the first pipe segment (110) and the second pipe segment (210), and an unlocking position for allowing the first pipe segment (110) and the second pipe segment (210) to rotate. The protective sleeve (300) slides relative to the first pipe segment (110) and can switch between the locking position and the unlocking position.

2. The quick-release dust collecting device according to claim 1, characterized in that: A first limiting groove (120) extending circumferentially is provided on the outer wall of the first pipe section (110), and a first limiting rib (220) is provided on the inner wall of the second pipe section (210); the first pipe section (110) and the second pipe section (210) are rotated relative to each other so that the first limiting rib (220) is engaged in or disengaged from the first limiting groove (120) to achieve connection or separation.

3. The quick-release dust collecting device according to claim 1, characterized in that: The sleeve (300) is provided with a second limiting groove (310), and the second pipe section (210) is provided with a second limiting rib (230). When the sleeve (300) is in a locked position, the second limiting rib (230) is inserted into the second limiting groove (310) to limit the mutual rotation of the first pipe section (110) and the second pipe section (210). When the sleeve (300) is in an unlocked position, the second limiting rib (230) is disengaged from the second limiting groove (310) to allow the first pipe section (110) and the second pipe section (210) to rotate relative to each other.

4. The quick-release dust collecting device according to claim 3, characterized in that: An elastic member (400) is sleeved on the first tube section (110), a convex rib (170) is provided on the first tube section (110), one end of the elastic member (400) abuts against the convex rib (170), and the other end of the elastic member (400) abuts against the sheath (300), and the elastic member (400) provides a force for the sheath (300) to return to a locked position.

5. The quick-release dust collecting device according to claim 2, characterized in that: The first pipe section (110) is provided with a third limiting groove (130) extending axially along the first pipe section (110), the sleeve (300) is provided with a third limiting rib (320) which can extend into the third limiting groove (130), and the groove wall of the third limiting groove (130) is used to limit the axial movement range of the third limiting rib (320).

6. The quick-release dust collecting device according to claim 5, characterized in that: A first opening (140) is provided on the groove wall of the third limiting groove (130) in the circumferential direction of the first pipe section (110), and the sleeve (300) is rotatable relative to the first pipe section (110) so that the third limiting rib (320) moves out of the third limiting groove (130) from the first outlet.

7. The quick-release dust collecting device according to claim 6, characterized in that: The first opening (140) is located at a middle position of the groove wall along the axial direction of the first pipe section (110).

8. The quick-release dust collecting device according to claim 6, characterized in that: The first limiting groove (120) comprises a second opening (150) for the first limiting rib (220) to enter and exit the first limiting groove (120), and a channel (160) is provided between the first opening (140) and the second opening (150) for the first limiting rib (220) to enter and exit the second opening (150) and for the third limiting rib (320) to enter and exit the first opening (140).

9. The quick-release dust collecting device according to claim 8, characterized in that: The first opening (140) and the second opening (150) are different in size.

10. An electric tool, characterized in that: The electric tool comprises a body and a quick-release dust collecting device mounted on the body, and the quick-release dust collecting device is the quick-release dust collecting device according to any one of claims 1 to 9.

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