Quick-change connector and ultrasonic drill comprising same

Abstract

The utility model discloses a quick-change connector and an ultrasonic drill comprising the quick-change connector, the quick-change connector comprises a connector body, a fluid input pipe and a shell slidably sleeving the connector body, the fluid input pipe is communicated with the connector body, and the quick-change connector further comprises a side shell installed on one side of the shell; and a first electric connector which can be electrically connected with an external power supply is arranged between the shell and the side shell. The quick-change connector is provided with the fluid connector and the circuit connector which are independently arranged, interference is reduced, and simultaneous quick connection of a fluid pipeline and a circuit is achieved; and the side shell is arranged on one side of the shell, and the overall cross section of the quick-change connector is of a non-circular structure, so that when the quick-change connector is in contact and electric connection with the second electric connector on the connector side, positioning is easier, and quick installation can be realized.

Description

Technical Field

[0001] The present application discloses a connector, in particular a quick-change connector integrating a fluid connector and an electrical connector, and an ultrasonic drill including the same. Background Art

[0002] In existing ultrasonic pneumatic tools, the air pipe and the cable are respectively connected via independent connectors. The air pipe and the wire are prone to entanglement and interference with each other, and multiple different connectors are required, which causes inconvenience for installation, maintenance and on-site management.

[0003] If the air circuit and the electrical circuit are arranged in one connector, but the cross-sections of the connector are all circular, when connecting to the corresponding connector, it is necessary to first align the positions of the corresponding air circuit and electrical circuit, and then connect to achieve communication, so the installation time is relatively long. Summary of the Utility Model

[0004] The purpose of the present application is to provide a quick-change connector and an ultrasonic drill including the same, which separate the fluid connector and the electrical connector in the connector to achieve simultaneous connection of the fluid pipeline and the electrical circuit, and is easy to position.

[0005] In a first aspect, the present application provides a quick-change connector, which includes a connector body, a fluid input pipe, and a housing slidably sleeved on the connector body. The fluid input pipe is communicated with the connector body. It is characterized in that it further includes a side housing installed on one side of the housing, and a first electrical connector capable of being electrically connected to an external power supply is arranged between the housing and the side housing.

[0006] Alternatively, the fluid input pipe includes a first section and a second section arranged from front to back. The second section includes an inner pipe and an outer pipe arranged outside the inner pipe. An annular accommodation cavity with an opening facing away from the connector body is arranged between the inner pipe and the outer pipe. Wires respectively electrically connected to the external power supply and the first electrical connector can pass through the annular accommodation cavity, and the inner pipe, the first section and the connector body are sequentially communicated.

[0007] Alternatively, the outer diameter of the outer pipe is greater than the outer diameter of the first section. The fluid input pipe further includes a first circumferential flange respectively connected to the inner pipe and the outer pipe. The inner pipe, the outer pipe and the first circumferential flange enclose the annular accommodation cavity. A first wire passing hole is arranged on the first circumferential flange close to the outer pipe side, and the wire sequentially passes through the annular accommodation cavity and the first wire passing hole.

[0008] Alternatively, the first electrical connector is arranged at the front ends of the housing and the side housing, and the first electrical connector, the side housing and the housing enclose a first accommodation cavity.

[0009] Alternatively, the housing extends rearward to the outer periphery of the outer tube. A second cavity is defined by the housing, the joint body, and the first section. The second cavity communicates with the annular accommodation cavity through the first wire threading hole. A second wire threading hole is formed in the housing that forms the first cavity. The second cavity communicates with the first cavity through the second wire threading hole.

[0010] Alternatively, the quick-release joint further includes a waterproof protective head located behind the outer tube, and the waterproof protective head is fixedly connected to the outer tube.

[0011] Alternatively, a second circumferential flange is provided on the outer surface of the joint body. The outer surface of the second circumferential flange abuts against the inner surface of the housing. The side shell is fixedly connected to the housing via a fastener located behind the second circumferential flange. The fastener penetrates the inner surface of the housing and extends into the gap between the housing and the joint body, and the fastener can abut against the rear end face of the second circumferential flange to limit the sliding range of the housing relative to the joint body.

[0012] Alternatively, the quick-release joint further includes a connector head that can communicate with the front end of the joint body.

[0013] Alternatively, a cover plate and an insulating seat are provided on the outer surface of the connector head. The insulating seat is disposed on one side of the cover plate, and a second electrical connector that can be electrically connected to the first electrical connector is installed on the insulating seat.

[0014] Alternatively, the cover plate and the insulating seat have side walls extending toward the joint body side to protect the second electrical connector.

[0015] Alternatively, the side walls of the cover plate and the insulating seat are shaped to fit the outer surfaces of the housing and the side shell. The cover plate and the insulating seat can be snapped onto the housing and the side shell, such that the second electrical connector is electrically connected to the first electrical connector, and the connector head communicates with the joint body.

[0016] On the other hand, the present application provides an ultrasonic drill, including a gun handle and any one of the above quick-release joints. The quick-release joint includes a connector head and a joint body. The connector head can communicate with the front end of the joint body, and the connector head is installed at the bottom end of the gun handle.

[0017] The quick-change joint provided by this application is provided with a fluid input pipe communicating with the joint body. A first electrical connector is provided between the side shell and the housing slidably sleeved on the joint body. That is, the quick-change joint has a fluid joint and an electrical circuit joint arranged independently of each other, reducing interference and realizing the simultaneous connection of the fluid pipeline and the electrical circuit in one connection. Moreover, the side shell is located on one side of the housing, and the first electrical connector is located outside the housing. The overall quick-change joint is a non-circular structure. Therefore, when making contact electrical connection with the second electrical connector on the connection head side, compared with the existing quick-change joint with a circular structure, the quick-change joint of this application is easier to position and can achieve rapid installation. Description of the Drawings

[0018] Figure 1 Fig. shows a perspective view of the quick-change joint according to this application, where the quick-change joint is in a separated state;

[0019] Figure 2 Fig. shows an exploded view of the quick-change joint according to this application;

[0020] Figure 3 Fig. shows a cross-sectional view of the quick-change joint according to this application, where the quick-change joint is in a separated state;

[0021] Figure 4 Fig. shows another cross-sectional view of the quick-change joint according to this application, where the quick-change joint is in a state of gas path connection;

[0022] Figure 5 Fig. shows yet another cross-sectional view of the quick-change joint according to this application, where the quick-change joint is in a state of gas path - electrical circuit connection;

[0023] Figure 6 is a schematic diagram of an ultrasonic drill in an embodiment of this application.

[0024] In the figure: 1. Joint body; 2. Housing; 3. Side shell; 5. Spool; 6. Rubber pad; 7. Sealing ring; 9. Return device; 10. Biasing device; 12. Connector; 13. Insulating seat; 14. Second electrical connector; 15. First electrical connector; 16. Steel ball; 17. Fluid input pipe; 17a. First section; 17b. Outer pipe; 17c. Inner pipe; 18. Stud; 19. First wire passing hole; 20. Waterproof part body; 21. Locking part; 22. Nut; 23. Second wire passing hole; 25. Hose; 26. Wire; 27. Card slot; 28. Cover plate; 32. Locking through hole; 33. Wire; 34. Vent hole; 35. Inclined surface; 36. Gun handle; 37. First cavity; 38. Second cavity; 39. Annular accommodation cavity; 40. First circumferential flange; 41. Second circumferential flange; 42. Fastener. Detailed Embodiments

[0025] The quick-connect fitting disclosed by the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following detailed description and the claims, the advantages and features of the present utility model will be clearer. It should be noted that the drawings are all in a very simplified form and use non-precise ratios, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present utility model.

[0026] Referring to the attached Figures 1 to 5 Describe the quick-connect fitting disclosed according to the present application, which includes a male plug part and a female plug part, and the male plug part and the female plug part are connected to each other to achieve the connection of the gas circuit and an optional circuit.

[0027] The male plug part may include a joint body 1, a fluid input pipe 17, a housing 2, and a side housing 3 mounted (e.g., via screws, etc.) on one side of the housing 2, for example, mounted on the outer surface of the housing 2. The housing 2 is slidably sleeved on the joint body 1, and the fluid input pipe 17 communicates with the joint body 1. The housing 2 may be in a generally cylindrical shape with openings at both ends, and the axial direction of its cylindrical shape defines the axial direction of the quick-connect fitting. Correspondingly, the radial direction of its cylindrical shape defines the radial direction of the quick-connect fitting.

[0028] The male plug part may further include a first electrical connector 15 disposed between the housing 2 and the side housing 3, which is used for electrical connection with an external power supply. The female plug part may include a connector 12 and a second electrical connector 14 disposed on the outer surface of the connector 12, wherein the connector 12 is configured to be inserted into the front end of the housing 2 and can communicate with the joint body 1. The side housing 3 may be formed as a shield covering at least a part of the outer surface of the housing 2. Due to the presence of the side housing 3, the cross-sectional shape of the male plug part of the quick-connect fitting is non-circular, and when connected to the corresponding connector 12, it can achieve more convenient alignment relative to a fitting that is circular as a whole.

[0029] The first electrical connector 15 and the second electrical connector 14 are configured to be electrically connected to each other. A first wire 26 is connected to the first electrical connector 15, and a second wire 33 is connected to the second electrical connector 14.

[0030] The joint body 1 and the first electrical connector 15 are spaced apart in a quick-connect fitting. The quick-connect fitting has a fluid fitting and an electrical circuit fitting arranged independently of each other, and a single connection can achieve the simultaneous connection of the fluid pipeline and the electrical circuit. Compared with setting two fittings to achieve the connection of the fluid pipeline and the electrical circuit, it avoids interference between pipelines; moreover, the side housing 3 is located on one side of the housing 2, and the first electrical connector 15 is located outside the housing 2. The overall cross-section of the quick-connect fitting is a non-circular structure. Therefore, when making contact electrical connection with the second electrical connector 14 on the side of the connector 12, this quick-connect fitting is easier to position and can achieve rapid installation compared with the existing quick-connect fitting with a circular structure.

[0031] Alternatively, the second electrical connector 14 may be implemented as a male plug, and the first electrical connector 15 may be implemented as a female plug. The second electrical connector 14 is inserted into the first electrical connector 15 to achieve electrical connection between the first wire 26 and the second wire 33. The second electrical connector 14 may be implemented as a plurality of copper sheets arranged side by side, which are inserted into the first electrical connector 15 having a plurality of slots.

[0032] The front end of the housing 2 (the end close to the connector head 12 inserted into the housing 2) includes a reduced-diameter section, which forms a stepped structure fitting the joint body 1 on the inner surface of the housing 2. The front end of the joint body 1 may be provided with an axial chute, and the reduced-diameter section of the housing 2 may be provided with a stud 18. The stud 18 is configured to slide axially in the axial chute to guide the housing 2 to slide axially along the joint body 1.

[0033] The male plug portion may further include a valve core 5 disposed inside the joint body 1. The valve core 5 is configured to reciprocate between a closed position (as shown in Figure 3 ) and a communication position (as shown in Figure 4 and 5 ) within the joint body 1. In the communication position, the fluid (including gas, liquid, gas-liquid mixture, etc.) in the fluid input pipe 17 flows through the valve core 5 into the connector head 12. In the closed position, the valve core 5 prevents the fluid from flowing through the valve core 5 into the connector head 12.

[0034] When the male plug portion is connected to the female plug portion, the connector head 12 communicates with the front end of the joint body 1 via the valve core 5, and optionally, the first electrical connector 15 and the second electrical connector 14 are electrically connected to each other.

[0035] The housing 2 and the joint body 1 are configured to allow the housing 2 (together with the side shell 3) to move axially relative to the joint body 1; the valve core 5 and the joint body 1 are configured to allow the valve core 5 to move axially relative to the joint body 1. The joint body 1 is formed in a generally cylindrical shape with openings at both ends, and a second circumferential flange 41 is provided on its outer surface. The outer surface of the second circumferential flange 41 may abut against the inner surface of the housing 2.

[0036] In some embodiments, the housing 2 and the side shell 3 may further be provided with limit members. The side shell 3 is fixedly connected to the housing 2 via a fastener 42 (such as a screw, etc.) located behind the second circumferential flange 41. The fastener 42 penetrates the inner surface of the housing 2 and extends into the gap between the housing 2 and the joint body 1 (i.e., the second cavity 38 mentioned later), and the fastener 42 can abut against the rear end face of the second circumferential flange 41 to limit the sliding range of the housing 2 relative to the joint body 1.

[0037] The male plug portion may further include a sealing ring 7 disposed at the connection between the joint body 1 and the fluid input pipe 17. The sealing ring 7 is sleeved on the outer surface of the valve core 5 and is located between the joint body 1 and the valve core 5. The outer surface of the sealing ring 7 abuts against the inner surfaces of the joint body 1 and the fluid input pipe 17, and the inner surface of the sealing ring 7 abuts against the outer surface of the valve core 5.

[0038] The position of the sealing ring 7 relative to the fluid input pipe 17 and the joint body 1 may be fixed, and the valve core 5 is axially movable relative to the joint body 1 and the fluid input pipe 17, especially an axial sliding in the sealing ring 7. For example, a groove may be formed at the connection between the joint body 1 and the fluid input pipe 17. Correspondingly, a flange may be formed on the outer surface of the sealing ring 7, and the flange is embedded in the groove to limit the axial sliding of the sealing ring 7 relative to the fluid input pipe 17 and the joint body 1.

[0039] Both ends of the valve core 5 are respectively formed as an open end and a closed end. The open end faces the front end of the housing 2 and is used for fluid communication with the connector 12. One or more ventilation holes 34 are formed in the side wall of the valve core 5 near the closed end. Among them, in the connected position, the closed end of the valve core 5 extends out of the sealing ring 7, and the ventilation holes 34 are located behind the sealing ring 7 and can be in communication with the fluid input pipe 17, allowing fluid to flow through the valve core 5 via the ventilation holes 34; in the closed position, the sealing ring 7 closes the ventilation holes 34 to prevent fluid from flowing through the valve core 5 via the ventilation holes 34.

[0040] A first sealing groove for accommodating the first O-ring 8a may be provided in the inner surface of the sealing ring 7, a second sealing groove for accommodating the second O-ring 8b may be provided in the outer surface, and a third sealing groove for accommodating the third O-ring 8c may be provided in the outer surface of the valve core 5 near the closed end. The second O-ring 8b seals the contact between the fluid input pipe 17 and the sealing ring 7. When the valve core 5 is in its closed position, as Figure 3 shown, the ventilation holes 34 are located between the second O-ring 8b and the third O-ring 8c, and when the valve core 5 moves backward to the connected position, the ventilation holes 34 leave the area covered by the sealing ring 7.

[0041] The joint body 1 is threadedly connected to the fluid input pipe 17. A part of the fluid input pipe 17 is fixedly sleeved on a part of the outer surface of the sealing ring 7 and is fluid-sealedly connected to the valve core 5 by means of the third O-ring 8c.

[0042] The fluid inlet pipe 17 may include a first section 17a and a second section arranged from front to back. Thus, the first section 17a is arranged closer to the valve core 5. Among them, the second section may include an inner pipe 17c communicating with the first section and an outer pipe 17b arranged outside the inner pipe 17c. The outer diameter of the outer pipe 17b is greater than the outer diameter of the first section 17a. The fluid inlet pipe 17 further includes a first circumferential flange 40 respectively connected to the inner pipe 17c and the outer pipe 17b. An annular accommodation cavity 39 is formed between the inner pipe 17c, the outer pipe 17b and the first circumferential flange 40. The rear side of the housing 2 extends to the outer circumference of the outer pipe 17b. Thus, a second accommodation cavity 38 is formed between the housing 2, the joint body 1 and the fluid inlet pipe 17, and there is no fixed connection between the fluid inlet pipe 17 and the housing 2. The inner pipe 17c is configured to be connected to the hose 25 behind it to input fluid. A first wire passing hole 19 leading to the second accommodation cavity 38 is provided on the side of the first circumferential flange 40 close to the outer pipe 17b. The first wire passing hole 19 communicates the annular accommodation cavity 39 and the second accommodation cavity 38, allowing the first wire 26 to pass through the first wire passing hole 19 from the annular accommodation cavity 39 into the second accommodation cavity 38. A first accommodation cavity 37 may be defined between the side housing 3 and the housing 2, and the first electrical connector 15 is located in the first accommodation cavity 37. A second wire passing hole 23 leading to the first accommodation cavity 37 is provided in the housing 2. The second wire passing hole 23 communicates the second accommodation cavity 38 and the first accommodation cavity 37, allowing the first wire 26 to further pass through the second wire passing hole 23 from the second accommodation cavity 38 into the first accommodation cavity 37 to be connected to the first electrical connector 15.

[0043] Generally, the wire 26 sequentially passes through the annular accommodation cavity 39, the first wire passing hole 19, the second accommodation cavity 38, the second wire passing hole 23 into the first accommodation cavity 37, and is connected to the first electrical connector 15. The wire 26 is accommodated in the cavity, protecting the wire from the external environment.

[0044] The quick-release connector may further include a return device 9, which may be implemented as a spring, such as a conical spring. The return device 9 may be located between the fluid inlet pipe 17 and the valve core 5, and its two ends respectively abut against the first circumferential flange 40 and the closed end of the valve core 5 to apply a return force to the valve core 5 to move the valve core 5 from the communication position to the closed position.

[0045] Alternatively, the return device 9 may be located between the valve core 5 and the sealing ring 7, and its two ends respectively abut against the end face of the sealing ring 7 and the stepped structure on the outer surface of the valve core 5.

[0046] The quick-release connector may further include a guide ring 4. The guide ring 4 is fixedly connected to the valve core 5, for example, via a threaded connection, and a part of the outer surface of the guide ring 4 may abut against the inner surface of the joint body 1. The guide ring 4 has an inner diameter that gradually narrows towards the valve core 5 to guide the connector 12 to be inserted into the guide ring 4 to communicate with the valve core 5.

[0047] A rubber gasket 6 may be provided between the rear end portion of the guide ring 4 and the valve core 5. When the guide ring 4 is inserted into the valve core 5, its end face abuts against the rubber gasket 6 to achieve a fluid sealing effect.

[0048] A biasing device 10, such as a spring, may be provided between the joint body 1 and the housing 2. The biasing device 10 applies a biasing force to the housing 2 to push the housing 2 from a preset position (as shown in Figure 3 ) towards the locking position (as shown in Figure 4 and 5 ). The biasing device 10 may be arranged such that one end abuts against the second circumferential flange 41 and the other end abuts against a stepped structure formed by the reduced diameter section on the inner surface of the housing 2.

[0049] A stepped structure may also be formed in the inner surface of the front end of the joint body 1 to limit the axial movement range of the valve core 5 towards the front end and prevent the valve core 5 from coming out.

[0050] As shown in Figure 5 , in the locking position of the housing 2, the connector 12 is locked inside the housing 2, specifically in the locking guide ring 4. When the connector 12 is inserted into the guide ring 4 and pushes the valve core 5 from the closed position to the communicating position, the biasing device 10 can move the housing 2 to the locking position.

[0051] For this purpose, specifically, the male plug portion may include: a bevel 35 provided on the inner surface of the housing 2; one or more locking through holes 32 provided at the front end of the joint body 1, with a steel ball 16 installed in each locking through hole 32, and a card slot 27 provided on the outer surface of the connector 12. The diameter of the steel ball 16 is configured to be greater than the depth of the locking through hole 32. When the connector 12 is inserted into the joint body 1, the housing 2 moves towards the locking position. Specifically, the bevel 35 first abuts against the steel ball 16 and pushes the steel ball to move radially inwards in the locking through hole 32 into the card slot 27 of the connector 12, and when the housing 2 moves to the locking position, the inner surface of the housing 2 covers the locking through hole 32 and prevents the steel ball 16 from moving radially outwards in the locking through hole 32. To move the housing 2 from the locking position back to the preset position to remove the connector 12, the operator can grasp the housing 2 and push the housing 2 towards the rear end. After moving the housing 2 to the preset position, the inner surface of the housing 2 exposes the locking through hole 32, and pulling the connector 12 outwards can remove it from the guide ring 4.

[0052] In addition, in the closed position of the valve core 5, as shown in Figure 3 , the outer surface of the guide ring 4 covers the locking through hole 32 from the inside and prevents the steel ball 16 from moving radially inwards in the locking through hole 32, and in the communicating position of the valve core 5, as shown in Figure 5 , the outer surface of the guide ring 4 exposes the locking through hole 32 and allows the steel ball 16 to move radially inwards into the card slot 27 in the locking through hole.

[0053] The male plug portion may further include a waterproof protective head located behind the outer tube 17b and fixedly connected to the outer tube 17b. The waterproof protective head may include a waterproof member body 20, a nut 22, and a locking member 21. A waterproof sleeve (not shown) may also be installed inside the locking member 21. The front end of the waterproof member body 20 is threadedly connected to the inner surface of the outer tube 17b of the fluid input tube 17. The front end of the locking member 21 passes through the waterproof member body 20. The nut 22 is connected to the rear end of the waterproof member body 20. The hose 25 is connected to the inner tube 17c of the fluid input tube 17. The first wire 26 and the hose 25 are together inserted through the waterproof sleeve. After the nut 22 is screwed tightly onto the waterproof member body 20, the locking member 21 locks the hose 25 and the first wire 26 in the waterproof member body 20, improving the waterproof effect and preventing the hose 25 and the wire 26 from shaking.

[0054] The female plug portion may further include a cover plate 28 and an insulating seat 13 provided on the outer surface of the connector head 12. The insulating seat 13 is provided on one side of the cover plate 28, and the cover plate 28 and the insulating seat 13 are relatively arranged on the outer periphery of the connector head 12. The cover plate 28 and the connector head 12 may be integrally formed. The second electrical connector 14 electrically connected to the first electrical connector 15 is installed on the insulating seat 13. The cover plate 28 and the insulating seat 13 have side walls extending toward the joint body 1 side to protect the second electrical connector 14 and prevent it from contacting the outside. When the connector head 12 is inserted into the bottom of the guiding ring 4 and the fastener 42 abuts against the second circumferential flange 41 of the joint body 1 (as Figure 5 shown), the first electrical connector 15 is connected to the second electrical connector 14 to form an electrical connection. At this time, the side walls of the cover plate 28 and the insulating seat 13 are sleeved on the walls of the housing 2 and the side housing 3, which can prevent the relative rotation between the male plug portion and the female plug portion. The bottom wall of the cover plate 28 abuts against the housing 2, which can also limit the further movement of the housing 2 toward the front end. Since the housing 2 has a circular cross-section and the side housing 3 is installed on one side of the housing 2 to form an overall non-circular cross-section, the corresponding cover plate 28 and the insulating seat 13 as a whole are also non-circular cross-sections. After the male plug portion and the female plug portion are cooperatively installed, the side walls of the cover plate 28 and the insulating seat 13 are sleeved on the outer surfaces of the walls of the housing 2 and the side housing 3, which can prevent the relative rotation between the male plug portion and the female plug portion, thereby extending the service life of the electrical connector. If the overall structures of the male plug portion and the female plug portion are both circular and there is no limit between the two parts, relative rotation may occur, affecting the electrical connection of the electrical connector.

[0055] Refer to Figures 3 to 5 to describe the operation of the quick-release connector disclosed in the present application.

[0056] As Figure 3As shown, the quick-release connector is in a separated state. The return device (conical spring) 9 between the connector body 1 and the fluid input pipe 17 pushes the valve core 5 forward, the sealing ring 7 covers the vent hole 34 of the valve core 5, and the flow path (including the hose 25 - fluid input pipe 17 - valve core 5 - connector 12) is closed. In this state, the guide ring 4 at the front end of the valve core 5 pushes the steel ball 16 at the front end of the connector body 1 radially outward, and the outer surface of the guide ring 4 covers the locking through hole 32 from the inside and prevents the steel ball 16 from moving radially inward in the locking through hole 32. At this time, the inclined surface 35 at the front end of the housing 2 is blocked by the steel ball 16 and cannot move forward axially. The first electrical connector 15 at the front end of the housing 2 is in an open circuit state.

[0057] As Figure 4 shown, the operator inserts the connector 12 into the connector body 1, and then pushes the guide ring 4 and the valve core 5 backward to expose the vent hole 34. The fluid enters the connector 12 and the flow path is connected. And under the push of the biasing device 10, the inclined surface 35 at the front end of the housing 2 moves the steel ball 16 radially inward and snaps it into the slot 27 of the connector 12 to lock the connector 12. At this time, the housing 2 moves forward until the front end of the housing 2 is approximately flush with the front end of the connector body 1.

[0058] As Figure 5 shown, after the first electrical connector 15 on the side housing 3 is aligned with the second electrical connector 14 on the insulating seat 13, the housing 2 can continue to move forward under the action of the biasing device 10 until the rear screw fixing the side housing 3 abuts against the second circumferential flange 41 of the connector body 1 (at this time, the rear screw plays a limiting role). At this time, the second electrical connector (male connector) 14 is inserted into the first electrical connector (female connector) 15, or conversely, the first electrical connector (male connector) 15 is inserted into the second electrical connector (female connector) 14, and the circuit is connected. At this time, the cover plate 28 also abuts against the housing 2 and can also limit the further forward movement of the housing 2.

[0059] This quick-release connector can be used as an ordinary air pipe connector or liquid connector, or as an integrated connector.

[0060] Referring Figure 6 , an ultrasonic drill according to another aspect disclosed in the present application is described, which includes a gun handle 36 and any one of the above quick-release connectors. The quick-release connector includes a connector 12 and a connector body 1. The connector 12 can communicate with the front end of the connector body 1, and the connector 12 is installed at the bottom end of the gun handle 36.

[0061] The ultrasonic drill includes an ultrasonic transducer connected to a gun handle, which can be electrically connected to an ultrasonic generator to convert an electrical signal into mechanical vibration, enhancing the processing ability of a drill bit connected to the ultrasonic transducer, capable of suppressing splitting and burrs generated during drilling. The ultrasonic drill is electrically connected to the ultrasonic generator through a quick-change joint (providing ultrasonic vibration for the drill bit), and at the same time is connected to an external air source (providing rotational power for the drill bit), achieving simultaneous connection of the circuit and the air circuit with one installation.

[0062] The expressions "first", "second", "third" are not intended to indicate order or quantity. For example, the reference to a second element is not intended to limit the existence of a first element.

[0063] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0064] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0065] The singular forms of "a", "the", and "said" used in the disclosure of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0066] In the disclosure of this application and the appended claims, "a plurality", "a variety of", unless otherwise specified, refer to two or more.

[0067] Obviously, those skilled in the art can make various changes and modifications to the quick-change joint disclosed in the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A quick-change joint, comprising a joint body, a fluid input pipe, and a housing slidably sleeved on the joint body, the fluid input pipe being communicated with the joint body, characterized in that, It further includes a side shell installed on one side of the housing, and a first electrical connector capable of being electrically connected to an external power supply is provided between the housing and the side shell.

2. The quick-change connector according to claim 1, characterized in that, The fluid input pipe includes a first section and a second section arranged from front to back; Wherein, the second section includes an inner pipe and an outer pipe arranged outside the inner pipe. An annular accommodation cavity with an opening facing away from the joint body is provided between the inner pipe and the outer pipe. Wires respectively electrically connected to the external power supply and the first electrical connector can pass through the annular accommodation cavity, and the inner pipe, the first section and the joint body are sequentially communicated.

3. The quick-change joint according to claim 2, characterized in that, The outer diameter of the outer pipe is greater than the outer diameter of the first section. The fluid input pipe further includes a first circumferential flange respectively connected to the inner pipe and the outer pipe. The inner pipe, the outer pipe and the first circumferential flange enclose the annular accommodation cavity. A first wire passing hole is provided on the first circumferential flange close to the outer pipe side, and the wire sequentially passes through the annular accommodation cavity and the first wire passing hole.

4. The quick-change connector according to claim 3, characterized in that, The first electrical connector is arranged at the front end of the housing and the side shell. The first electrical connector, the side shell and the housing enclose a first accommodation cavity.

5. The quick-change connector according to claim 4, characterized in that, The housing extends rearward to the outer periphery of the outer pipe. The housing, the joint body and the fluid input pipe enclose a second accommodation cavity. The second accommodation cavity is communicated with the annular accommodation cavity through the first wire passing hole; a second wire passing hole is provided on the housing forming the first accommodation cavity, and the second accommodation cavity is communicated with the first accommodation cavity through the second wire passing hole.

6. The quick-change joint according to claim 2, characterized in that, It further includes a waterproof protection head located behind the outer pipe, and the waterproof protection head is fixedly connected to the outer pipe.

7. The quick-change joint according to claim 1, characterized in that, A second circumferential flange is provided on the outer surface of the joint body. The outer surface of the second circumferential flange abuts against the inner surface of the housing. The side shell is fixedly connected to the housing through a fastener located behind the second circumferential flange. The fastener penetrates the inner surface of the housing and extends into the gap between the housing and the joint body, and the fastener can abut against the rear end face of the second circumferential flange to limit the sliding range of the housing relative to the joint body.

8. The quick-change joint according to claim 1, characterized in that, It further includes a connecting head, and the connecting head can be communicated with the front end of the joint body.

9. The quick-change joint according to claim 8, characterized in that, A cover plate and an insulating seat are provided on the outer surface of the connecting head. The insulating seat is arranged on one side of the cover plate, and a second electrical connector capable of being electrically connected to the first electrical connector is installed on the insulating seat.

10. The quick-change joint according to claim 9, characterized in that, The cover plate and the insulating seat have side walls extending toward the joint body side to protect the second electrical connector.

11. The quick-change joint according to claim 10, characterized in that, The side walls of the cover plate and the insulating seat are in shape fit with the outer surfaces of the housing and the side shell. The cover plate and the insulating seat can be buckled on the housing and the side shell, so that the second electrical connector is electrically connected to the first electrical connector, and the connecting head is communicated with the joint body.

12. An ultrasonic drill, characterized in that, It includes a gun handle and the quick-change joint according to any one of claims 1-11. The quick-change joint includes a connecting head and a joint body. The connecting head can be communicated with the front end of the joint body, and the connecting head is installed at the bottom end of the gun handle.

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