Plug-in device and massage gun

Abstract

This utility model relates to a plug-in device and a massage gun. The plug-in device is used to connect the output shaft and massage head of the massage gun. It includes an elastic component, a first mounting member, and a second mounting member. The elastic component is used to fit the massage head. One side of the first mounting member has a first concave surface and a first receiving portion. One side of the second mounting member has a second concave surface and a second receiving portion. The first mounting member and the second mounting member can be interlocked so that the first concave surface and the second concave surface together form a clamping channel for fitting onto the outer wall of the output shaft, and the first receiving portion and the second receiving portion together form a receiving space for accommodating the elastic component. This simplifies the assembly difficulty of the plug-in device itself and improves the stability of the connection between the plug-in device and the massage gun body and massage head.

Description

Technical Field

[0001] This utility model relates to the field of massage gun technology, specifically to a plug-in device and a massage gun. Background Technology

[0002] In related technologies, the body and massage head of a massage gun are usually connected and assembled through a connector. However, existing connectors are often difficult to assemble due to their complex structure, and the connection stability is also relatively poor when connecting the connector to the body and massage head. Utility Model Content

[0003] Based on the above-mentioned technical problems, this utility model provides a plug-in device and a massage gun to simplify the assembly difficulty of the plug-in device itself and improve the stability of the connection between the plug-in device and the massage gun body and massage head, so as to at least partially solve the above-mentioned technical problems.

[0004] A first aspect of this utility model provides a plug-in device for connecting the output shaft and massage head of a massage gun, comprising: an elastic component for fitting the massage head; a first mounting member having a first concave surface and a first receiving portion on one side; and a second mounting member having a second concave surface and a second receiving portion on one side, wherein the first mounting member and the second mounting member can be engaged with each other such that the first concave surface and the second concave surface together form a clamping channel for fitting onto the outer wall surface of the output shaft, and the first receiving portion and the second receiving portion together form a receiving space for accommodating the elastic component.

[0005] Optionally, the plug-in device further includes a first locking member; one of the first mounting member and the second mounting member is provided with a first through hole, and the other is provided with a first mounting hole, wherein the first locking member can pass through the first through hole and connect to the first mounting hole to connect the first mounting member and the second mounting member.

[0006] Optionally, the first through hole is provided in the first mounting member, and the second mounting member includes a first positioning post, which can pass through the positioning hole of the output shaft, and the first mounting hole is formed in the first positioning post.

[0007] Optionally, the elastic component includes a spring and snap-fit ​​portions respectively connected to both ends of the spring, the spring being located within the receiving space and capable of providing a force that pushes the two snap-fit ​​portions away from each other.

[0008] Optionally, the snap-fit ​​portion is constructed as a hemispherical piece, the hemispherical piece including opposing convex and concave surfaces, the concave surface being connected to the spring, and the convex surface being used to at least partially conform to the inner wall of the massage head when the plug-in device is connected to the massage head.

[0009] Optionally, the edge of the hemispherical piece is provided with a raised edge, and the opening of the receiving space is provided with a stepped surface. The raised edge can fit against the stepped surface to prevent the hemispherical piece from falling out of the receiving space.

[0010] Optionally, the plug-in device further includes a second locking member; the first mounting member is further provided with a second through hole, the second mounting member further includes a second positioning post, the second positioning post has a second mounting hole formed therein, the second locking member can pass through the second through hole and be connected to the second mounting hole; the accommodating space is located between the first positioning post and the second positioning post.

[0011] Optionally, one of the first mounting member and the second mounting member is provided with a plug-in portion, and the other is provided with a mating portion, wherein the plug-in portion can be inserted into the mating portion when the first mounting member is mated with the second mounting member.

[0012] Optionally, the outer side of the first mounting member is provided with a first limiting portion; and / or, the outer side of the second mounting member is provided with a second limiting portion; the first limiting portion and / or the second limiting portion are used to limit the circumferential movement of the massage head when the plug-in device is connected to the massage head.

[0013] In a second aspect, this utility model provides a massage gun, including a body, a massage head, and a plug-in device as described in any of the above optional solutions. An output shaft is provided on one side of the body, and the plug-in device is connected to the output shaft and the massage head.

[0014] Through the above technical solution, namely the plug-in device provided by this utility model, when connecting the plug-in device to the output shaft and massage head of the massage gun, the plug-in device itself can be initially assembled. That is, the elastic component can be accommodated in one of the first accommodating part or the second accommodating part, and the first mounting part and the second mounting part can be fastened together. During the fastening process of the first mounting part and the second mounting part, the first accommodating part and the second accommodating part can also jointly form an accommodating space for accommodating the elastic component, so that the elastic component can be stably connected to the first mounting part and the second mounting part. Furthermore, when the first mounting part and the second mounting part are fastened together, the first concave surface and the second concave surface can also jointly form a clamping channel. At this time, The output shaft of the massage gun can be inserted into the clamping channel to complete the initial engagement between the output shaft and the plug-in device. Then, the plug-in device is plugged into the massage head, and the elastic component is fitted to the massage head to complete the assembly of the output shaft and the massage head. This plug-in device significantly simplifies the assembly difficulty of the plug-in device itself. When connecting the plug-in device to the output shaft and the massage head, the clamping channel improves the connection stability with the output shaft, and the elastic component improves the connection stability with the massage head. As a result, when the massage gun is working normally, the massage head, the plug-in device, and the output shaft are less likely to separate, thus improving the stability of the massage gun after assembly. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the plug-in device provided in an exemplary embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the second mounting component provided in an exemplary embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first mounting component provided in an exemplary embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram illustrating the cooperation of the second mounting member, elastic component, first locking member, and second locking member in an exemplary embodiment of this utility model.

[0020] Figure 5 yes Figure 4 A magnified view of the area at position C in the middle;

[0021] Figure 6 This is a schematic diagram of the connection between the plug-in device and the output shaft provided in an exemplary embodiment of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the massage gun provided in an exemplary embodiment of this utility model.

[0023] Figure 8 This is a cross-sectional view of the internal structure of the massage gun provided in an exemplary embodiment of this utility model;

[0024] Figure 9 yes Figure 8 A magnified view of a portion of position A in the middle;

[0025] Figure 10 This is a cross-sectional view of the internal structure of the massage gun provided in an exemplary embodiment of this utility model.

[0026] Figure 11 yes Figure 10 A magnified view of the area at position B in the middle.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. First mounting component; 110. First concave surface; 120. First receiving portion; 130. First through hole; 140. Second through hole; 150. Mating portion; 160. First limiting portion; 170. Stepped surface;

[0029] 2. Second mounting component; 210. Second concave surface; 220. Second receiving portion; 230. First mounting hole; 240. First positioning post; 250. Second positioning post; 251. Second mounting hole; 260. Insertion portion; 270. Second limiting portion;

[0030] 3. Elastic component; 310. Spring; 320. Snap-fit ​​part; 321. Protruding edge;

[0031] 4. First locking element;

[0032] 5. Second locking element;

[0033] 6. Body; 610. Output shaft;

[0034] 7. Massage head. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] In related technologies, the body and massage head of a massage gun are usually connected and assembled through a connector. However, existing connectors are often difficult to assemble due to their complex structure, and the connection stability is also relatively poor when connecting the connector to the body and massage head.

[0037] In view of the above-mentioned technical problems, the first aspect of this utility model provides a plug-in device, with reference to... Figures 1 to 11 As shown, the plug-in device is used to connect the output shaft 610 of the massage gun and the massage head 7. The plug-in device includes an elastic component 3, a first mounting member 1, and a second mounting member 2. The elastic component 3 is used to fit the massage head 7. One side of the first mounting member 1 has a first concave surface 110 and a first receiving portion 120. One side of the second mounting member 2 has a second concave surface 210 and a second receiving portion 220. The first mounting member 1 and the second mounting member 2 can be engaged with each other so that the first concave surface 110 and the second concave surface 210 together form a clamping channel for fitting onto the outer wall surface of the output shaft 610, and the first receiving portion 120 and the second receiving portion 220 together form a receiving space that can accommodate the elastic component 3.

[0038] Through the above technical solution, namely the plug-in device provided by this utility model, when connecting the plug-in device to the output shaft 610 and massage head 7 of the massage gun, the plug-in device itself can be initially assembled. That is, the elastic component 3 can be accommodated in one of the first accommodating part 120 or the second accommodating part 220, and the first mounting part 1 and the second mounting part 2 can be fastened together. During the fastening process of the first mounting part 1 and the second mounting part 2, the first accommodating part 120 and the second accommodating part 220 can also jointly form an accommodating space for accommodating the elastic component 3, so that the elastic component 3 can be stably connected to the first mounting part 1 and the second mounting part 2. Furthermore, the first concave surface 110 and the second concave surface 210 can also jointly form a clamping passage when the first mounting part 1 and the second mounting part 2 are fastened together. At this point, the output shaft 610 of the massage gun can be inserted into the clamping channel to complete the initial engagement between the output shaft 610 and the plug-in device. Then, the plug-in device is plugged into the massage head 7, and the elastic component 3 is fitted to the massage head 7 to complete the assembly of the output shaft 610 and the massage head 7. The plug-in device can significantly simplify the assembly difficulty of the plug-in device itself. When connecting the plug-in device to the output shaft 610 and the massage head 7, the clamping channel can improve the connection stability with the output shaft 610, and the elastic component 3 can improve the connection stability with the massage head 7. As a result, when the massage gun is working normally, the massage head 7, the plug-in device, and the output shaft 610 are less likely to separate, thus improving the stability of the massage gun after assembly.

[0039] It should be noted that the shape of the clamping channel mentioned in the above embodiments can be any suitable shape. For example, when the cross-section of the output shaft 610 of the massage gun is circular, the clamping channel can be constructed as a cylindrical channel. When the cross-section of the output shaft 610 of the massage gun is rectangular, the clamping channel can be constructed as a rectangular channel, as long as the output shaft 610 can be stably connected with the clamping channel when inserted into the clamping channel.

[0040] In some implementations, reference Figure 1 , Figure 4 , Figure 6 , Figure 9 and Figure 11 As shown, the plug-in device also includes a first locking member 4. One of the first mounting member 1 and the second mounting member 2 is provided with a first through hole 130, and the other is provided with a first mounting hole 230. The first locking member 4 can pass through the first through hole 130 and then connect to the first mounting hole 230 to connect the first mounting member 1 and the second mounting member 2.

[0041] Through the above solution, the first locking member 4 can improve the connection stability of the first mounting member 1 and the second mounting member 2 when they are interlocked. That is, the first locking member 4 can lock the relative position of the first mounting member 1 and the second mounting member 2, so that the assembled plug-in device can be stably connected to the output shaft 610 and the massage head 7 of the massage gun. The arrangement of the first through hole 130 and the first mounting hole 230 can also be any suitable arrangement. For example, it can be referred to Figure 1 and Figure 4 As shown, the first through hole 130 can be arranged on the first mounting member 1, and the first mounting hole 230 can be arranged on the second mounting member 2. After the first mounting member 1 and the second mounting member 2 are engaged with each other, the positions of the first mounting hole 230 and the first through hole 130 can be aligned. At this time, the first locking member 4 can pass through the first through hole 130 and connect to the second mounting hole 251 to securely lock the first mounting member 1 and the second mounting member 2.

[0042] It should be noted that the first locking member 4 mentioned in the above embodiments can be any component with a locking function, for example, referring to... Figure 1 and Figure 4 As shown, the first locking member 4 can be constructed as a first screw passing through the first through hole 130, and the first mounting hole 230 can be constructed as a first threaded hole that is threaded to the first screw. In this configuration, the first screw can pass through the first through hole 130 and be threaded to the first threaded hole, thereby stably connecting the first mounting member 1 and the second mounting member 2.

[0043] In order to further improve the stability of the connection between the first mounting part 1 and the second mounting part 2, the first through hole 130 can also be constructed as a screw hole. In this way, the first screw can be threaded into the first through hole 130 and the first mounting hole 230 respectively, so as to further improve the stability of the connection between the first mounting part 1 and the second mounting part 2.

[0044] In some embodiments, to further improve the stability of the connection between the first mounting member 1 and the second mounting member 2, and to improve the stability of the connection between the first mounting member 1 and the second mounting member 2 and the output shaft 610 of the massage gun after assembly, reference is made to... Figure 1 , Figure 2 and Figure 4 As shown, the first through hole 130 can be provided in the first mounting member 1, and the second mounting member 2 includes a first positioning post 240. The first positioning post 240 can pass through the positioning hole of the output shaft 610, and the first mounting hole 230 is formed in the first positioning post 240.

[0045] In this way, the first positioning post 240 can improve the stability of the connection between the plug-in device and the output shaft 610 of the massage gun. That is to say, when pre-assembling the plug-in device, the first positioning post 240 on the second mounting member 2 can be passed through the positioning hole of the output shaft 610 first, then the first mounting member 1 and the second mounting member 2 can be assembled and fastened, and finally the first locking member 4 can be passed through the first through hole 130 and connected to the first mounting hole 230 in the first positioning post 240 to lock the first mounting member 1 and the second mounting member 2. Under this assembly method, the first positioning post 240 can further improve the stability of the connection between the plug-in device and the output shaft 610. After the plug-in device is connected to the output shaft 610 through the first positioning post 240, it is less likely to loosen between the plug-in device and the output shaft 610 when the massage gun is working normally, thus improving the stability of the connection between the plug-in device and the output shaft 610.

[0046] In some implementations, reference Figure 4 , Figure 9 and Figure 11 As shown, the elastic component 3 includes a spring 310 and latching portions 320 respectively connected to both ends of the spring 310. The spring 310 is located within the receiving space and can provide a force that moves the two latching portions 320 away from each other.

[0047] In this way, the spring 310 located in the receiving space can provide a force that keeps the two locking parts 320 at both ends away from each other. Thus, when the elastic component 3 is assembled with the massage head 7, the elastic force of the spring 310 can keep the two locking parts 320 at both ends pressed against the inner wall of the massage head 7, thereby improving the stability of the connection between the plug-in device and the massage head 7.

[0048] To further improve the stability of the connection between the connector and the massage head 7, the inner side of the massage head 7 can typically be provided with a groove for the locking portion 320 to abut. For example, the groove can be a spherical concave arc surface recessed into the inner wall of the massage head 7, and reference... Figure 1 , Figure 4 , Figure 6 and Figure 11 As shown, the snap-fit ​​part 320 can also be constructed as a hemispherical piece, which includes opposing convex and concave surfaces. The concave surface is connected to the spring 310, and the convex surface is used to at least partially conform to the inner wall of the massage head 7 when the plug-in device is connected to the massage head 7, that is, the spherical concave arc surface of the inner wall of the massage head 7. In this arrangement, when the plug-in device is assembled with the massage head 7, the convex surface of the hemispherical piece can conform to the spherical concave arc surface of the massage head 7, and under the elastic force of the spring 310 on the concave surface, the convex surface of the hemispherical piece can stably conform to the spherical concave arc surface of the massage head 7, thereby improving the stability of the connection between the massage head 7 and the plug-in device.

[0049] In some implementations, reference Figure 4 and Figure 5 As shown, the edge of the hemispherical piece is provided with a protruding edge 321, and the opening of the receiving space is provided with a stepped surface 170. The protruding edge 321 can fit into the stepped surface 170 to prevent the hemispherical piece from falling out of the receiving space.

[0050] Through the above solution, the cooperation between the convex edge 321 and the stepped surface 170 can prevent the outer convex surface of the hemispherical piece from detaching from the receiving space when it is attached to the inner wall of the massage head 7, that is, as shown in the figure. Figure 5 As shown, when the hemispherical piece is about to detach from the receiving space, a stop can be formed by the stepped surface 170 at the opening of the receiving space, so that the hemispherical piece can be stably placed in the receiving space and stably fit the massage head 7.

[0051] In some implementations, reference Figures 1 to 4 ,as well as Figure 6 , Figure 9 and Figure 11 As shown, the plug-in device also includes a second locking member 5; the first mounting member 1 is also provided with a second through hole 140, and the second mounting member 2 also includes a second positioning post 250, in which a second mounting hole 251 is formed, and the second locking member 5 can pass through the second through hole 140 and be connected to the second mounting hole 251; the accommodating space is located between the first positioning post 240 and the second positioning post 250.

[0052] In the above manner, the second locking member 5 can further improve the stability of the connection between the first mounting member 1 and the second mounting member 2, and can also further improve the stability of the elastic component 3 installed in the accommodating space. Since the accommodating space is located between the first positioning post 240 and the second positioning post 250, when the first mounting member 1 and the second mounting member 2 are fastened together, the accommodating space can be locked by the first locking member 4 and the second locking member 5 respectively connected to the first positioning post 240 and the second positioning post 250 on both sides. Under this connection relationship, the first mounting member 1 and the second mounting member 2 can further improve the tightness of their connection. And when the first mounting member 1 and the second mounting member 2 are tightly connected, the accommodating space can also maintain good sealing after the elastic component 3 is installed, thereby reducing or preventing loosening between the first mounting member 1 and the second mounting member 2, which could cause the elastic component 3 to pop out of the accommodating space.

[0053] In some implementations, reference Figures 1 to 4 As shown, one of the first mounting member 1 and the second mounting member 2 is provided with a plug-in portion 260, and the other is provided with a mating portion 150. The plug-in portion 260 can be inserted into the mating portion 150 when the first mounting member 1 is mated with the second mounting member 2.

[0054] By means of the above method, the insertion and engagement of the insertion part 260 and the mating part 150 can further improve the stability of the mutual positioning of the first mounting member 1 and the second mounting member 2 during docking. For example, it can be combined with... Figures 1 to 3 As shown, the second mounting member 2 is provided with a plug-in part 260, and the first mounting member 1 is provided with a mating part 150. When the plug-in part 260 is inserted into the mating part 150 to form a limiting fit, the relative positions of the first mounting member 1 and the second mounting member 2 are also fixed, thereby reducing or preventing the plug-in device from shaking or disintegrating due to shaking when it is plugged into the output shaft 610 of the massage gun and the massage head 7.

[0055] It should be noted that the insertion part 260 and the mating part 150 mentioned in the above embodiments can be inserted and mated in any suitable manner. For example, the insertion part 260 can be a strip-shaped protrusion formed on the surface of the second mounting member 2, and correspondingly, the mating part 150 can be a strip-shaped hole formed on the surface of the first mounting member 1. By inserting the strip-shaped protrusion into the strip-shaped hole, the relative position of the first mounting member 1 and the second mounting member 2 can be fixed.

[0056] Alternatively, the insertion part 260 and the mating part 150 can adopt other suitable mating methods. For example, the insertion part 260 can be a cylindrical protrusion protruding from the surface of the second mounting member 2, and the mating part 150 can be a cylindrical hole recessed into the surface of the first mounting member 1. The relative position of the first mounting member 1 and the second mounting member 2 can also be fixed by inserting the cylindrical protrusion into the cylindrical hole.

[0057] Furthermore, in the above embodiments, the positions of the insertion part 260 and the mating part 150 can also be determined according to the actual situation. In the above method, the insertion part 260 is disposed on the second mounting member 2, and the mating part 150 is disposed on the first mounting member 1. Conversely, in the embodiment not shown in the figure, the insertion part 260 can also be disposed on the first mounting member 1, and the mating part 150 can also be disposed on the second mounting member 2. Similarly, the relative positions of the first mounting member 1 and the second mounting member 2 can also be fixed. This utility model does not make specific limitations in this regard.

[0058] In some implementations, reference Figure 1 As shown, the outer side of the first mounting member 1 is provided with a first limiting part 160; and / or, the outer side of the second mounting member 2 is provided with a second limiting part 270; the first limiting part 160 and / or the second limiting part 270 are used to limit the massage head 7 circumferentially when the plug-in device is connected to the massage head 7.

[0059] In this manner, the first limiting part 160 and / or the second limiting part 270 can engage with the groove inside the massage head 7 when the connecting device is connected to the massage head 7. This prevents the connecting device from rotating relative to the massage head 7 or becoming loose due to excessively high vibration frequency during massage gun operation. Figure 1 As shown, the first limiting part 160 and / or the second limiting part 270 may be strip-shaped protrusions protruding from the outer sidewall of the surface of the first mounting member 1 and / or the second mounting member 2. The strip-shaped protrusions can be inserted into the groove on the inner sidewall of the massage head 7 to limit and fix both the insertion device and the massage head 7.

[0060] It should be noted that at least one of the first limiting part 160 and the second limiting part 270 can be provided, that is, only the first limiting part 160 or only the second limiting part 270 can be provided, or both the first limiting part 160 and the second limiting part 270 can be provided. Furthermore, the specific shape of the first limiting part 160 and the second limiting part 270, as well as their specific positions on the first mounting member 1 and the second mounting member 2, can be selected according to the actual situation to make a reasonable layout, as long as it can satisfy the requirement that the first limiting part 160 and / or the second limiting part 270 can limit the massage head 7 circumferentially when the plug-in device is plugged into the massage head 7.

[0061] A second aspect of this utility model provides a massage gun, as shown in the reference. Figures 1 to 11 As shown, the massage gun includes a body 6, a massage head 7, and a plug-in device mentioned in the above embodiments. The body 6 has an output shaft 610 on one side, and the plug-in device is connected to the output shaft 610 and the massage head 7. The plug-in device has all the beneficial effects of the above specific embodiments.

[0062] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope of protection claimed by the present invention.

Claims

1. A connector for connecting the output shaft (610) of a massage gun and a massage head (7), characterized in that, include: An elastic component (3) is used to fit the massage head (7); A first mounting member (1) has a first concave surface (110) and a first receiving portion (120) on one side; The second mounting member (2) has a second concave surface (210) and a second receiving portion (220) on one side. The first mounting member (1) and the second mounting member (2) can be engaged with each other so that the first concave surface (110) and the second concave surface (210) together form a clamping channel for fitting onto the outer wall surface of the output shaft (610), and the first receiving portion (120) and the second receiving portion (220) together form a receiving space that can accommodate the elastic component (3).

2. The plug-in device according to claim 1, characterized in that, The plug-in device also includes a first locking element (4); One of the first mounting member (1) and the second mounting member (2) is provided with a first through hole (130) and the other is provided with a first mounting hole (230). The first locking member (4) can pass through the first through hole (130) and then connect to the first mounting hole (230) to connect the first mounting member (1) and the second mounting member (2).

3. The plug-in device according to claim 2, characterized in that, The first through hole (130) is provided in the first mounting member (1), and the second mounting member (2) includes a first positioning post (240). The first positioning post (240) can pass through the positioning hole of the output shaft (610), and the first mounting hole (230) is formed in the first positioning post (240).

4. The plug-in device according to any one of claims 1-3, characterized in that, The elastic component (3) includes a spring (310) and snap-fit ​​portions (320) respectively connected to both ends of the spring (310). The spring (310) is located within the receiving space and is capable of providing a force that moves the two snap-fit ​​portions (320) away from each other.

5. The plug-in device according to claim 4, characterized in that, The snap-fit ​​portion (320) is constructed as a hemispherical piece, which includes opposing convex and concave surfaces. The concave surface is connected to the spring (310), and the convex surface is used to at least partially conform to the inner wall of the massage head (7) when the plug-in device is connected to the massage head (7).

6. The plug-in device according to claim 5, characterized in that, The edge of the hemispherical piece is provided with a raised edge (321), and the opening of the receiving space is provided with a stepped surface (170). The raised edge (321) can fit against the stepped surface (170) to prevent the hemispherical piece from falling out of the receiving space.

7. The plug-in device according to claim 3, characterized in that, The plug-in device also includes a second locking element (5); The first mounting member (1) is further provided with a second through hole (140), and the second mounting member (2) further includes a second positioning post (250), in which a second mounting hole (251) is formed, and the second locking member (5) can pass through the second through hole (140) and be connected to the second mounting hole (251); The accommodating space is located between the first positioning post (240) and the second positioning post (250).

8. The plug-in device according to claim 1, characterized in that, One of the first mounting member (1) and the second mounting member (2) is provided with a plug-in portion (260) and the other is provided with a mating portion (150). The plug-in portion (260) can be inserted into the mating portion (150) when the first mounting member (1) is mated to the second mounting member (2).

9. The plug-in device according to claim 1, characterized in that, The first mounting member (1) has a first limiting part (160) on its outer side; and / or, the second mounting member (2) has a second limiting part (270) on its outer side; The first limiting part (160) and / or the second limiting part (270) are used to circumferentially limit the massage head (7) when the plug-in device is connected to the massage head (7).

10. A massage gun, characterized in that, The device includes a body (6), a massage head (7), and a plug-in device as described in any one of claims 1-9. An output shaft (610) is provided on one side of the body (6), and the plug-in device is connected to the output shaft (610) and the massage head (7).

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