Quick change connector and ultrasonic drill
Patent Information
- Application Number
- CN202521964561.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-09-11
AI Technical Summary
[0003]本实用新型的目的是：提供一种快换接头及超声钻，以解决现有技术中超声气动工具外壳装拆与穿线步骤繁琐的技术问题
[0014]本实用新型提供的快换接头及超声钻，其有益效果为：快换接头的接头主体与流体输入管连通，使得气源的气体可从接头主体的前端输出；外壳套设在接头主体上，且侧壳与外壳之间形成容纳电连接器的第一容纳腔，外壳设置有可经由导线穿过的缺口，导线经由缺口穿过并不影响外壳的装拆，且导线容易经由缺口进入第一容纳腔以与电连接器电连接，从而简化导线的安装。
Smart Images
Figure CN224795619U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connector technology, and in particular to a quick-change connector and an ultrasonic drill. Background Technology
[0002] Currently, in existing ultrasonic pneumatic tools, the housing of the pneumatic-electric quick-connect coupling has a wire hole. When assembling the quick-connect coupling, the housing must be installed first, and then the wire is introduced from the rear end of the quick-connect coupling, passed through the aforementioned wire hole, and finally electrically connected to the electrical connector. It is not easy to operate when the wire passes through the wire hole. Since one end of the wire is connected to the electrical connector and the other end passes through the wire channel to connect to the external power supply, when it is necessary to disassemble the housing, the wire can only be cut, which makes the operation complicated. Utility Model Content
[0003] The purpose of this invention is to provide a quick-change connector and an ultrasonic drill to solve the technical problem of cumbersome assembly, disassembly, and wiring steps for ultrasonic pneumatic tools in the prior art.
[0004] To achieve the above objectives, the first aspect of this utility model provides a quick-connect coupling, comprising: a coupling body, a fluid input pipe, a housing, and a side shell; the fluid input pipe has a gas channel and a wire channel extending in a front-to-back direction and not communicating with each other, the gas channel passing through the fluid input pipe, the coupling body and the gas channel communicating sequentially from front to back, and the wire channel being located at the rear end of the fluid input pipe; the housing is slidably fitted onto the outside of the coupling body, and the housing has a rear end extending to the rear end of the fluid input pipe; the rear end has a notch; the side shell is mounted on one side of the housing, and the side shell and the housing form a first receiving cavity for accommodating an electrical connector; the notch communicates with the first receiving cavity, and the notch is used to allow the wire in the wire channel to pass through, so that the wire in the wire channel can be connected to the electrical connector.
[0005] Preferably, a wire fixing plate is fixedly installed inside the wire channel, and the wire fixing plate is provided with multiple wire fixing holes.
[0006] Preferably, the side shell is disposed on the side of the outer shell near the notch, the side shell fills the rear end of the notch, and the side shell and the front end of the notch form a first wire passage hole, so that the wire in the wire channel is connected to the electrical connector through the first wire passage hole.
[0007] Preferably, the outer diameter of the front end of the fluid input pipe is smaller than the outer diameter of the rear end of the fluid input pipe; the fluid input pipe, the connector body and the outer shell form a second receiving cavity, and the fluid input pipe is also provided with a second wire passage hole that connects the wire channel and the second receiving cavity; the wire channel, the second wire passage hole, the second receiving cavity, the first wire passage hole and the first receiving cavity are connected in sequence.
[0008] Preferably, the side shell has a protrusion on the side facing the notch, the protrusion is engaged with the rear end of the notch, and the protrusion and the front end of the notch form the first wire passage hole.
[0009] Preferably, the protrusion is provided with a guide groove extending in the front-back direction and opening towards the notch; the wire channel is located on the side of the gas channel near the notch, and an installation groove is provided on the outer side of the rear end of the fluid input pipe. The installation groove is located in front of the wire channel, and the opening of the installation groove faces the guide groove. A guide rod that can pass through the notch and extend into the guide groove is installed in the installation groove.
[0010] Preferably, the connector body is provided with a through vent hole that communicates with the gas channel. The front sidewall of the connector body is provided with multiple through holes for accommodating steel balls. The front end of the outer shell is provided with a limiting surface for blocking the steel balls. The front inner sidewall of the connector body is provided with a limiting step. The rear end of the limiting step is flush with the front side of the inner wall of each through hole. Each through hole is provided with an anti-detachment arc-shaped concave surface near the inner wall of the limiting step. The rear end of the limiting step is provided with a corresponding buffer arc-shaped concave surface. The buffer arc-shaped concave surface and the corresponding anti-detachment arc-shaped concave surface are smoothly connected.
[0011] Preferably, it further includes: a valve core; the inner circumferential surface of the front end of the fluid input pipe is directly slidably connected to the valve core, and the outer circumferential surface of the front end of the fluid input pipe is fixedly connected to the connector body.
[0012] Preferably, the outer periphery of the outer casing is provided with a grip portion, and the grip portion is provided with a plurality of anti-slip grooves.
[0013] A second aspect of this utility model provides an ultrasonic drill, comprising: a quick-change connector as described above, and a drill body; an electrical connector is provided in the first receiving cavity, the electrical connector being electrically connected to the drill body, and the drill body being connected to the connector body.
[0014] The quick-change connector and ultrasonic drill provided by this utility model have the following advantages: the connector body of the quick-change connector is connected to the fluid input pipe, so that the gas from the gas source can be output from the front end of the connector body; the outer shell is sleeved on the connector body, and a first receiving cavity for accommodating the electrical connector is formed between the side shell and the outer shell; the outer shell is provided with a notch through which a wire can pass; the wire passing through the notch does not affect the installation and removal of the outer shell, and the wire can easily enter the first receiving cavity through the notch to make an electrical connection with the electrical connector, thereby simplifying the installation of the wire. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of the quick-change connector according to an embodiment of the present utility model;
[0016] Figure 2 This is a cross-sectional structural diagram of the quick-connect coupling according to an embodiment of the present invention;
[0017] Figure 3 This is an exploded structural diagram of the quick-connect coupling according to an embodiment of the present utility model;
[0018] Figure 4 This is a structural diagram of the outer shell, fluid input pipe, and connector body after disassembly according to an embodiment of the present invention;
[0019] Figure 5 This is a schematic diagram of the side shell structure according to an embodiment of the present invention;
[0020] Figure 6 This is a schematic diagram of the wire fixing plate according to an embodiment of the present utility model;
[0021] Figure 7 This is a schematic diagram of the internal front side of the quick-connect connector according to an embodiment of the present invention;
[0022] Figure 8 This is a structural schematic diagram of another cross-section of the quick-change connector according to an embodiment of the present invention.
[0023] 100. Connector body; 110. Vent hole; 120. Through hole; 121. Anti-detachment arc-shaped concave surface; 130. Steel ball; 140. Limiting step; 141. Buffer arc-shaped concave surface; 200. Fluid input pipe; 210. Wire channel; 211. Wire fixing plate; 212. Wire fixing hole; 213. Second wire through hole; 220. Gas channel; 230. Mounting groove; 240. Guide rod; 300. Outer shell; 310. Rear end; 311. Notch; 312. First wire through hole; 320. Second receiving cavity; 330. Grip part; 340. Anti-slip groove; 350. Limiting surface; 400. Side shell; 410. First receiving cavity; 420. Protrusion; 421. Guide groove; 500. Valve core; 60. Cable; 70. Gas source connector; 80. Electrical connector. Detailed Implementation
[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.
[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0028] Please refer to the following: Figures 1 to 8 The quick-connect coupling provided in the embodiments of this utility model will now be described.
[0029] like Figures 1 to 4 As shown, the quick-connect coupling of this utility model embodiment includes: a coupling body 100, a fluid inlet pipe 200, a housing 300, and a side housing 400; the axial direction of the coupling body 100 is the front-to-back direction, and the front-to-back direction is as follows. Figures 1 to 5The direction is shown; the fluid input pipe 200 has a gas channel 220 and a wire channel 210 that extend in the front-to-back direction and are not interconnected. The gas channel 220 is disposed through the fluid input pipe 200. The connector body 100 is connected to the gas channel 220 from front to back, so that the gas from the gas source can be delivered from the rear end of the gas channel 220 of the fluid input pipe 200 to the front end of the connector body 100; the wire channel 210 is disposed at the rear end of the fluid input pipe 200; the outer shell 300 is slidably sleeved on the outside of the connector body 100. The outer shell 300 is provided with a rear end 310 extending to the rear end of the fluid input pipe 200; the rear end 310 is provided with a notch 311; the side shell 400 is installed on one side of the outer shell 300, and the side shell 400 is detachably connected to the outer shell 300. The side shell 400 and the outer shell 300 form a first receiving cavity 410 for accommodating an electrical connector 80; the notch 311 is configured to allow a wire in the wire channel to pass through, so that the wire connects to the electrical connector in the first receiving cavity. Specifically, the notch 311 communicates with the first receiving cavity 410, and the notch 311 is used to allow a wire in the wire channel 210 to pass through, so that the wire in the wire channel 210 connects to the electrical connector 80.
[0030] The outer shell 300 is used to cover the connector body 100 and the fluid input pipe 200. The rear end of the gas channel 220 can be connected to the gas source connector 70 connected to the gas source. The front end of the connector body 100 is used to connect to the gas connection port of the ultrasonic pneumatic tool. The first receiving cavity 410 formed by the side shell 400 and the outer shell 300 is used to install the electrical connector 80. The electrical connector 80 is located on the front side of the first receiving cavity 410 so that the front ends of the electrical connector 80 and the connector body 100 face the ultrasonic pneumatic tool together, so that the electrical connector 80 and the connector body 100 can be directly connected to the ultrasonic pneumatic tool, so that the electrical connection port and the gas connection port of the ultrasonic pneumatic tool can be connected to the quick-connect connector, and it is convenient to connect the gas source and the power source at the same time.
[0031] The side shell 400 is detachably connected to the outer shell 300 by screws to facilitate the installation and removal of the electrical connector 80; the rear end of the wire channel 210 is connected to the cable 60 of the external power supply so that the wires in the wire channel 210 can be electrically connected to the external power supply; the wires in the wire channel 210 can pass through the notch 311 and enter the first receiving cavity 410 so that the wires can be electrically connected to the electrical connector 80, which facilitates wire threading.
[0032] It is understandable that when the side shell 400 is installed on the outer shell 300, the external power supply is electrically connected to the wires in the wire channel 210, and the wires in the wire channel 210 enter the first receiving cavity 410 through the notch 311 so that the wires are electrically connected to the electrical connector 80. Of course, they can also pass through the notch 311 to the outside of the outer shell 300 and finally enter the first receiving cavity 410.
[0033] It should be noted that, because the rear end 310 has a notch 311 with its opening facing rearward, when it is necessary to separate the housing 300 from the connector body 100 and the fluid inlet pipe 200, the housing 300 can be removed forward without having to cut the wires to remove it, thus facilitating the installation and removal of the housing 300. Furthermore, when installing the quick-connect connector, the wires in the wire channel 210 can be led out first, and then the housing 300 can be installed. Due to the notch, the connection between the wires and the electrical connector 80 is not affected, avoiding the need to align the wires with the through holes on the housing when leading out the wires after installation, which complicates the installation process.
[0034] In this embodiment, the quick-connect connector body 100 is connected to the fluid input pipe 200, allowing gas from the gas source to be output from the front end of the connector body 100. The outer shell 300 is sleeved on the connector body 100, and a first receiving cavity 410 for accommodating the electrical connector 80 is formed between the side shell 400 and the outer shell 300. The electrical connector 80 is positioned in front of the first receiving cavity 410, so that the front ends of the electrical connector 80 and the connector body 100 can both face the same direction. That is, the quick-connect connector has independently arranged circuit connectors and fluid connectors, reducing interference between lines and facilitating direct connection of the quick-connect connector to ultrasonic pneumatic tools, reducing connection steps and making it convenient to use. Furthermore, the outer shell 300 is provided with a notch 311 through which wires can pass. The wires passing through the notch 311 do not affect the installation and removal of the outer shell 300, and the wires can easily enter the first receiving cavity 410 through the notch 311 to make an electrical connection with the electrical connector 80, thereby simplifying the installation of the wires.
[0035] In some embodiments of this utility model, reference is made to Figure 2 and Figure 6 A wire fixing plate 211 is fixedly installed inside the wire channel 210, and the wire fixing plate 211 is provided with multiple wire fixing holes 212. The wire fixing holes 212 are used to fix the wires inside the wire channel 210, which can prevent the wires from shaking randomly and facilitate the connection of the external power cable 60 to the wires.
[0036] In some embodiments of this utility model, reference is made to Figures 2 to 4The side shell 400 is located on the side of the outer shell 300 near the notch 311. The side shell 400 fills the rear end of the notch 311, and the side shell 400 and the front end of the notch 311 form a first wire passage hole 312, so that the wires in the wire channel 210 can be connected to the electrical connector 80 through the first wire passage hole 312. Filling the rear end of the notch 311 with the side shell 400 makes the overall outer shell 300 more complete and improves the structural strength; moreover, the first wire passage hole 312 formed by the side shell 400 and the front end of the notch 311 allows the wires passing through the wire channel 210 to pass through the first wire passage hole 312 uniformly, which facilitates wire passing and connector assembly, and also keeps all the wires inside the quick-connect connector, preventing them from being exposed and protecting them.
[0037] In some embodiments of this utility model, reference is made to Figures 2 to 4 , Figure 8 The outer diameter of the front end of the fluid input pipe 200 is smaller than the outer diameter of the rear end of the fluid input pipe 200. This reduces the overall weight of the fluid input pipe 200, requiring only a larger outer diameter for the rear portion where the wire channel 210 is located. It also allows for space to be provided for the wire to pass through, as described below. Furthermore, the fluid input pipe 200, the connector body 100, and the outer shell 300 form a second receiving cavity 320. The fluid input pipe 200 also has a second wire passage hole 213 connecting the wire channel 210 and the second receiving cavity 320. The wire channel 210, the second wire passage hole 213, the second receiving cavity 320, the first wire passage hole 312, and the first receiving cavity 410 are sequentially connected to ensure that the wire in the wire channel 210 can more easily pass through the first wire passage hole 312, facilitating wire threading.
[0038] In some embodiments of this utility model, reference is made to Figure 2 , 3 and Figure 5 The side shell 400 has a protrusion 420 on the rear end facing the notch 311. The protrusion 420 is engaged with the rear end of the notch 311, which facilitates the positioning of the side shell 400 and the outer shell 300 and makes it easier for the side shell 400 to be accurately positioned and connected to the outer shell 300. The protrusion 420 and the front end of the notch 311 form the first wire passage hole 312, so that the side shell 400 and the notch 311 form the first wire passage hole 312.
[0039] In some embodiments of this utility model, reference is made to Figures 2 to 5The protrusion 420 is provided with a guide groove 421 extending in the front-rear direction; the opening of the guide groove 421 faces the notch 311, the wire channel 210 is located on the side of the gas channel 220 near the notch 311, and the outer side of the rear end of the fluid input pipe 200 is provided with a mounting groove 230, the mounting groove 230 is located in front of the wire channel 210, and the opening of the mounting groove 230 faces the guide groove 421. A guide rod 240 that can pass through the notch 311 and extend into the guide groove 421 is installed in the mounting groove 230, which can restrict the movement direction of the side shell 400 and the outer shell 300 relative to the connector body 100 and the fluid input pipe 200, so that the outer shell 300 and the side shell 400 can only slide back and forth relative to the connector body 100 and the fluid input pipe 200, and the front-rear movement distance of the outer shell 300 and the side shell 400 is restricted by the guide groove 421.
[0040] Understandably, referring to Figures 2 to 4 The central axis M of the gas channel 220 is not on the same straight line as the central axis L of the connector body 100. Since the notch 311 and the side shell 400 are both located on one side of the outer shell 300, placing the gas channel 220 on the side of the fluid input pipe 200 away from the notch 311 and placing the wire channel 210 on the side of the fluid input pipe 200 close to the notch 311 facilitates the passage of the wire in the wire channel 210 through the first wire through hole 312, making wire lead-in easier and facilitating the assembly of the quick-connect connector. Secondly, compared to the scheme where the gas channel 220 and the connector body 100 are concentrically arranged, the space of the wire channel 210 can be increased in the fluid input pipe 200 with the same outer diameter, so that the cable 60 can be better installed in the wire channel 210.
[0041] In some embodiments of this utility model, reference is made to Figures 2 to 4 , Figure 7 and Figure 8The connector body 100 is provided with a through vent 110, which is connected to the gas channel 220. The front side wall of the connector body 100 is provided with a plurality of through holes 120 for accommodating steel balls 130. The front end of the outer shell 300 is provided with a limiting surface 350 for blocking the steel balls 130. The front inner side wall of the connector body 100 is provided with a limiting step 140. The rear end of the limiting step 140 is flush with the front side of the inner wall of each through hole 120. Each through hole 120 is provided with an anti-detachment arc-shaped concave surface 121 near the inner wall of the limiting step 140. The rear end of the limiting step 140 is provided with a corresponding buffer arc-shaped concave surface 141. The buffer arc-shaped concave surface 141 and the corresponding anti-detachment arc-shaped concave surface 121 are smoothly connected. That is, the rear end of the limiting step 140 extends to a position flush with the front side of the inner wall of the through hole 120. By setting the anti-detachment arc concave surface 121, the steel ball 130 in the through hole 120 can be prevented from escaping from the inner side of the vent hole 110. Moreover, the anti-detachment arc concave surface 121 and the buffer arc concave surface 141 are connected in a transition, which can guide the steel ball 130 back into the through hole 120, making it less likely to get stuck.
[0042] It is understood that there is a compression spring between the housing 300 and the connector body 100. The housing 300 is provided with a limiting surface 350 for pushing the steel ball 130 into the vent 110. The compression spring provides thrust so that the steel ball 130 is pushed into the vent 110 through the limiting surface 350 so that the steel ball 130 locks the locking groove of the ultrasonic pneumatic tool to achieve the purpose of fastening the connection.
[0043] In some embodiments of this utility model, reference is made to Figure 2 , Figure 8 The quick-connect coupling also includes a valve core 500; the inner circumferential surface of the front end of the fluid input pipe 200 is directly slidably connected to the valve core 500, and the outer circumferential surface of the front end of the fluid input pipe 200 is fixedly connected to the coupling body 100. The valve core 500 is used to prevent gas leakage and to connect the gas passage 220 and the vent hole 110. There is a compression spring between the valve core 500 and the fluid input pipe 200. When the quick-connect coupling is not connected to a gas-using device, the compression spring pushes the valve core 500 forward to cut off the connection between the gas passage 220 of the fluid input pipe 200 and the vent hole 110, thereby preventing gas leakage. The outer peripheral surface of the front end of the fluid input pipe 200 is connected to the connector body 100, and the inner peripheral surface of the front end of the fluid input pipe 200 is directly slidably connected to the valve core 500. This allows the valve core 500 to directly seal the fluid input pipe 200, preventing gas from leaking out from the gap between the fluid input pipe 200 and the connector body 100. This reduces the use of sealing rings, reduces the number of assembly parts, and facilitates assembly.
[0044] In some embodiments of this utility model, for anti-slip purposes, refer to Figure 1 and Figure 3 The outer periphery of the housing 300 is provided with a grip portion 330, which is provided with multiple anti-slip grooves 340. The grip portion 330 facilitates the user's grip on the quick-change connector, and the anti-slip grooves 340 increase the friction between the user and the quick-change connector, allowing the user to better grip the quick-change connector and facilitate the connection of the quick-change connector with the ultrasonic pneumatic tool. Specifically, the grip portion 330 can also be provided on the rear end 310 of the housing 300.
[0045] This embodiment also provides an ultrasonic drill, comprising: a quick-change connector as described above, and a drill body; an electrical connector 80 is provided in the first receiving cavity 410, the electrical connector 80 being electrically connected to the drill body, and the drill body being connected to the connector body 100. The drill body has a connector head that can be connected to both the electrical connector 80 and the connector body 100, i.e., the connector head is respectively provided with an electrical connection port for connecting to the electrical connector 80 and a gas connection port for connecting to the connector body 100. This allows the quick-change connector to connect the gas path and the electrical path in one installation, facilitating use.
[0046] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this utility model, and these improvements and substitutions should also be considered within the protection scope of this utility model.
Claims
1. A quick-connect coupling, characterized in that, include: The device comprises a connector body, a fluid input pipe, a housing, and a side shell. The fluid input pipe has a gas channel and a wire channel extending in a front-to-back direction but not communicating with each other. The gas channel passes through the fluid input pipe. The connector body and the gas channel are connected sequentially from front to back. The wire channel is located at the rear end of the fluid input pipe. The housing is slidably fitted onto the outside of the connector body and has a rear end extending to the rear end of the fluid input pipe. The rear end has a notch. The side shell is installed on one side of the housing, and the side shell and the housing form a first receiving cavity for accommodating an electrical connector. The notch communicates with the first receiving cavity and allows the wire in the wire channel to pass through, so that the wire in the wire channel can be connected to the electrical connector.
2. The quick-connect coupling according to claim 1, characterized in that, A wire fixing plate is fixedly installed inside the wire channel, and the wire fixing plate is provided with multiple wire fixing holes.
3. The quick-connect coupling according to claim 1, characterized in that, The side shell is disposed on the side of the outer shell near the notch. The side shell fills the rear end of the notch, and the side shell and the front end of the notch form a first wire passage hole, so that the wire in the wire channel is connected to the electrical connector through the first wire passage hole.
4. The quick-connect coupling according to claim 3, characterized in that, The outer diameter of the front end of the fluid input pipe is smaller than the outer diameter of the rear end of the fluid input pipe; the fluid input pipe, the connector body and the outer shell form a second receiving cavity, and the fluid input pipe is also provided with a second wire passage hole that connects the wire channel and the second receiving cavity; the wire channel, the second wire passage hole, the second receiving cavity, the first wire passage hole and the first receiving cavity are connected in sequence.
5. The quick-connect coupling according to claim 3, characterized in that, The side shell has a protrusion on the side facing the notch. The protrusion is engaged with the rear end of the notch, and the protrusion and the front end of the notch together form the first wire passage hole.
6. The quick-connect coupling according to claim 5, characterized in that, The protrusion is provided with a guide groove that extends in the front-back direction and faces the notch; the wire channel is located on the side of the gas channel near the notch, and the outer side of the rear end of the fluid input pipe is provided with an installation groove, the installation groove is located in front of the wire channel, and the opening of the installation groove faces the guide groove, and a guide rod that can pass through the notch and extend into the guide groove is installed in the installation groove.
7. The quick-connect coupling according to claim 1, characterized in that, The connector body is provided with a through vent hole, which is connected to the gas channel. The front side wall of the connector body is provided with multiple through holes for accommodating steel balls. The front end of the outer shell is provided with a limiting surface for blocking the steel balls. The front inner side wall of the connector body is provided with a limiting step. The rear end of the limiting step is flush with the front side of the inner wall of each through hole. Each through hole is provided with an anti-detachment arc-shaped concave surface near the inner wall of the limiting step. The rear end of the limiting step is provided with a corresponding buffer arc-shaped concave surface. The buffer arc-shaped concave surface and the corresponding anti-detachment arc-shaped concave surface are smoothly connected.
8. The quick-connect coupling according to claim 1, characterized in that, Also includes: Valve core; the inner circumferential surface of the front end of the fluid input pipe is directly slidably connected to the valve core, and the outer circumferential surface of the front end of the fluid input pipe is fixedly connected to the connector body.
9. The quick-connect coupling according to claim 1, characterized in that, The outer periphery of the outer shell is provided with a grip portion, and the grip portion is provided with multiple anti-slip grooves.
10. An ultrasonic drill, characterized in that, include: The quick-change connector and drill body as described in any one of claims 1-9; the drill body is equipped with a connector, and the drill body is connected to the connector body through the connector.