Massage gun and its output shaft connection structure

Abstract

This utility model relates to a massage gun and its output shaft connection structure. The output shaft connection structure is used to connect with a massage head and includes an output shaft and a plug-in assembly. One end of the output shaft is provided with a plug-in portion, which has an external thread. The plug-in assembly is used to connect to the massage head and includes a mounting part and a connector. The mounting part includes a plug-in channel into which the plug-in portion can be inserted, and the plug-in channel has an internal thread. The plug-in portion is screwed into the internal thread of the plug-in channel through the external thread. One of the plug-in portion and the plug-in channel has a first protrusion, and the other has a first groove. The first protrusion can be embedded in the first groove after the external thread and the internal thread are screwed in place. The connector includes a top head for connecting the massage head. This output shaft connection structure can reduce the noise of the massage gun during operation and improve the stability of the connection between the output shaft of the massage gun and the plug-in assembly.

Description

Technical Field

[0001] This utility model relates to the field of massage gun technology, specifically to a massage gun and its output shaft connection structure. Background Technology

[0002] In related technologies, the body and massage head of a massage gun are usually assembled through a connector. One end of the connector is connected to the output shaft of the massage gun body, and the other end is connected to the body. However, during operation, the connector often has a gap at the connection point with the output shaft. When the massage gun vibrates at high frequency, it can cause loud noise and loosening of the connector and the output shaft. Utility Model Content

[0003] Based on the above-mentioned technical problems, this utility model provides a massage gun and its output shaft structure, which can reduce the noise of the massage gun during operation and improve the stability of the connection between the output shaft and the connector, so as to at least partially solve the above-mentioned technical problems.

[0004] In a first aspect, this utility model provides an output shaft connection structure for connecting to a massage head, comprising: an output shaft, one end of which is provided with a plug-in portion, the plug-in portion having an external thread; a plug-in assembly for connecting to the massage head and including a mounting member and a connector, the mounting member including a plug-in channel for inserting the plug-in portion, the plug-in channel having an internal thread, the plug-in portion being screwed into the internal thread of the plug-in channel via the external thread; one of the plug-in portion and the plug-in channel having a first protrusion, and the other having a first groove, the first protrusion being able to be embedded in the first groove after the external thread and the internal thread are screwed into place; the connector including a top head for connecting to the massage head.

[0005] Optionally, the total engagement length of the external thread and the internal thread is the same.

[0006] Optionally, the first protrusion is provided on the plug-in portion, the first groove is provided on the plug-in channel, a clearance space is formed between the plug-in portion and the plug-in channel, and clearance portions are respectively provided on both sides of the plug-in channel located on the first groove.

[0007] Optionally, the first protrusion is located at the end of the threaded segment of the external thread of the insertion part, and the first groove is located at the end of the threaded segment of the internal thread of the insertion channel.

[0008] Optionally, the mounting member is provided with a mounting hole for receiving the connector; the connector further includes a shaft portion located within the mounting hole, and two push heads located at opposite ends of the shaft portion. The push heads protrude from the outer wall of the mounting member and are retractable when subjected to force and ejectable when not subjected to force. The push heads are capable of engaging with the inner wall of the massage head when the connector is connected to the massage head.

[0009] Optionally, one of the shaft portion and the mounting hole is provided with a second protrusion, and the other is provided with a second groove, wherein the second protrusion can be embedded in the second groove.

[0010] Optionally, multiple second protrusions are arranged at intervals along the outer periphery of the shaft, and multiple second grooves are arranged at intervals along the inner periphery of the mounting hole, with the number of second protrusions corresponding one-to-one with the number of second grooves.

[0011] Optionally, the outer side wall of the mounting component is provided with a limiting portion, which is used to limit the circumferential movement of the massage head when the plug-in assembly is connected to the massage head.

[0012] Optionally, the mounting component may further include a limiting base located at one end thereof.

[0013] Secondly, this utility model provides a massage gun, including a body, a massage head, and an output shaft connection structure as described in any of the above optional solutions. The body is connected to the output shaft of the output shaft connection structure, and the massage head is connected to the plug-in component of the output shaft connection structure.

[0014] With the above-described technical solution, namely the output shaft connection structure provided by this utility model, when connecting the output shaft connection structure to the massage head of the massage gun, the connector can first be connected to the mounting part, and the end of the output shaft with the insertion part can be inserted into the insertion channel of the mounting part. During the insertion process, the insertion part can be screwed into the insertion channel by connecting the external thread and the internal thread. After the external thread and the internal thread are screwed in place, the first protrusion will also be embedded in the first groove to complete the self-assembly of the output shaft connection structure. Then the connector can be inserted into the massage head of the massage gun. During insertion, the top head on the connector retracts under force. After being inserted into the massage head, the top head pops out again and engages with the inner wall of the massage head, thus achieving a stable connection. The aforementioned method of using external and internal threads reduces the gap between the output shaft and the plug assembly, improving the stability of the connection and reducing noise during high-frequency vibration operation. Furthermore, the stable engagement between the top head and the inner wall of the massage head also reduces the likelihood of the massage head detaching from the output shaft during high-frequency vibration operation. 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 an overall schematic diagram of the output shaft connection structure provided in an exemplary embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the plug-in assembly provided in an exemplary embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the output shaft provided in an exemplary embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the mounting component provided in an exemplary embodiment of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the connector provided in an exemplary embodiment of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the output shaft and the plug-in assembly provided in an exemplary embodiment of the present utility model;

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

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Massage head;

[0025] 2. Output shaft; 210. Insertion part; 211. External thread; 212. First protrusion; 213. Clearance space;

[0026] 3. Plug-in assembly; 310. Mounting part; 311. Plug-in channel; 3111. Internal thread; 3112. First groove; 3113. Clearance part; 312. Mounting hole; 3121. Second groove; 313. Limiting part; 314. Limiting base; 320. Connecting part; 321. Top head; 322. Shaft part; 3221. Second protrusion;

[0027] 4. Fuselage. Detailed Implementation

[0028] 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.

[0029] In related technologies, the body and massage head of a massage gun are usually assembled through a connector. One end of the connector is connected to the output shaft of the massage gun body, and the other end is connected to the body. However, during operation, the connector often has a gap at the connection point with the output shaft. When the massage gun vibrates at high frequency, it can cause loud noise and loosening of the connector and the output shaft.

[0030] In view of the above-mentioned technical problems, the first aspect of this utility model provides an output shaft connection structure, as shown in the reference. Figures 1 to 7 As shown, the output shaft connection structure is used to connect with the massage head 1. The output shaft connection structure includes an output shaft 2 and a plug-in assembly 3. One end of the output shaft 2 is provided with a plug-in portion 210, and the plug-in portion 210 is provided with an external thread 211. The plug-in assembly 3 is used to connect with the massage head 1 and includes a mounting member 310 and a connector 320. The mounting member 310 includes a plug-in channel 311 into which the plug-in portion 210 can be inserted. The plug-in channel 311 is provided with an internal thread 3111. The plug-in portion 210 is screwed into the internal thread 3111 of the plug-in channel 311 through the external thread 211. One of the plug-in portion 210 and the plug-in channel 311 is provided with a first protrusion 212, and the other is provided with a first groove 3112. The first protrusion 212 can be embedded in the first groove 3112 after the external thread 211 and the internal thread 3111 are screwed into place. The connector 320 includes a top head 321, which is used to connect with the massage head 1.

[0031] With the above technical solution, namely the output shaft connection structure provided by this utility model, when connecting the output shaft connection structure to the massage head 1 of the massage gun, the connector 320 can be connected to the mounting part 310 first, and the end of the output shaft 2 with the insertion part 210 can be inserted into the insertion channel 311 of the mounting part 310. During the insertion process, the insertion part 210 can be screwed into the insertion channel 311 by means of threaded connection between the external thread 211 and the internal thread 3111. After the external thread 211 and the internal thread 3111 are screwed in place, the first protrusion 212 will also be embedded in the first groove 3112 to complete the self-assembly of the output shaft connection structure. Then the connector can be connected to the massage head 1 of the massage gun. When the connector 320 is inserted into the massage head 1, the top head 321 on the connector 320 is pushed back under force. After being inserted into the inside of the massage head 1, the top head 321 will pop out again and engage with the inner wall of the massage head 1, thus achieving a stable connection with the massage head 1. The above-mentioned method of engaging the external thread 211 and the internal thread 3111 can reduce the gap when the output shaft 2 and the plug-in component 3 are connected, improve the stability of the connection between the output shaft 2 and the plug-in component 3, and thus reduce the noise of the massage gun when it is working at high frequency. Furthermore, the stable engagement of the top head 321 with the inner wall of the massage head 1 can also reduce the possibility of the massage head 1 disengaging from the output shaft 2 when the massage gun is working at high frequency.

[0032] It should be noted that in the above embodiments, the noise generated by the massage gun during high-frequency vibration is usually caused by a gap between the output shaft 2 and the plug-in assembly 3 during the plugging process. That is, if there is a gap after the output shaft 2 and the plug-in assembly 3 are plugged in, the plug-in assembly 3 will also vibrate relative to the axial direction of the output shaft 2 when the massage gun vibrates at high frequency. In other words, the outer wall of the output shaft 2 will continuously hit the inner wall of the plugging channel 311 in the plug-in assembly 3 under high-frequency vibration, resulting in a large noise. However, through the cooperation between the external thread 211 and the internal thread 3111, and further through the positioning and locking of the first protrusion 212 and the first groove 3112, the outer wall of the output shaft 2 can be completely fitted to the inner wall of the plug-in channel 311, thereby reducing the impact of the outer wall of the output shaft 2 on the inner wall of the plug-in channel 311 when the massage gun vibrates at high frequency, thus reducing noise.

[0033] In some implementations, reference Figures 1 to 3 As shown, the total engagement length of the external thread 211 and the internal thread 3111 is the same.

[0034] By employing the above method, and ensuring that the total engagement length of the internal and external threads is the same, the external thread 211 and the internal thread 3111 can be fully engaged, while the reference... Figure 3As shown, since the insertion part 210 is located at one end of the output shaft 2, and the external thread 211 is provided on the outer side wall of the insertion part 210, when the external thread 211 and the internal thread 3111 are fully screwed together, the end of the insertion part 210 will also fit against the inner top wall of the insertion channel 311. This allows the output shaft 2 and the insertion assembly 3 to be engaged without any gap in the axial direction, further reducing the relative displacement of the output shaft 2 and the insertion assembly 3 in the axial direction when the massage gun is working at high frequency vibration, and also reducing the occurrence of noise.

[0035] In some implementations, reference Figures 1 to 3 as well as Figure 6 As shown, a first protrusion 212 is provided on the insertion part 210, a first groove 3112 is provided on the insertion channel 311, and an avoidance space 213 is formed between the insertion part 210 and the insertion channel 311. Avoidance parts 3113 are respectively provided on both sides of the insertion channel 311 located on the first groove 3112.

[0036] Through the above-described method, by the mutual cooperation of the first protrusion 212 and the first groove 3112, after the external thread 211 and the internal thread 3111 are threaded together and rotated into place, the first protrusion 212 is also correspondingly embedded in the first groove 3112. This can reduce or prevent the threads from coming loose due to the relative movement of the external thread 211 and the internal thread 3111 during the high-frequency vibration of the massage gun. Furthermore, by placing the first protrusion 212 in the insertion part 210 and the first groove 3112 in the insertion channel 311, the wear of the internal thread 3111 caused by the first protrusion 212 rubbing against the internal thread 3111 during the engagement of the external thread 211 and the internal thread 3111 can be reduced or avoided. Figure 2 and Figure 3 As shown, the first protrusion 212 is inserted into the first groove 3112 only at the instant when the external thread 211 and the internal thread 3111 are fully engaged.

[0037] Furthermore, combined Figures 1 to 3 as well as Figure 6 As shown, the clearance space 213 formed between the insertion part 210 and the insertion channel 311 can also prevent the first protrusion 212 from interfering with the inner wall of the insertion channel 311 when it is screwed into the insertion channel 311. The clearance parts 3113 provided on both sides of the first groove 3112 can flex the insertion part 210 during the screwing process, and allow the first protrusion 212 to smoothly enter the first groove 3112, thus improving the smoothness of screwing.

[0038] It should be noted that the number and position of the first protrusion 212 and the first groove 3112 can be arbitrarily suitable, but the number of the first protrusion 212 and the first groove 3112 must be the same to ensure a one-to-one fit. For example, Figure 1 , Figure 2 and Figure 3 As shown, the first protrusion 212 can be provided at the end of the threaded section of the insertion part 210 located on the external thread 211, and the first groove 3112 can be provided at the end of the threaded section of the insertion channel 311 located on the internal thread 3111.

[0039] With the above arrangement, the first protrusion 212 at the end of the external thread 211 and the first groove 3112 at the end of the internal thread 3111 can be locked together when the external thread 211 is fully threaded into the internal thread 3111. That is, at the instant when the external thread 211 and the internal thread 3111 are fully engaged, the first protrusion 212 is also simultaneously embedded in the first groove 3112. With this arrangement, the output shaft 2 and the plug-in assembly 3 can be quickly locked to improve the stability of their connection.

[0040] It should be noted that, in Figure 2 and Figure 3 In the example, the position of the first protrusion 212 in the insertion portion 210 and the position of the first groove 3112 in the insertion channel 311 are exemplary. That is, the first protrusion 212 and the first groove 3112 can be located on the side where both the external thread 211 and the internal thread 3111 are close to the output shaft 2. In the embodiment not shown in the figure, the first protrusion 212 and the first groove 3112 can also be located on the other side of the external thread 211 and the internal thread 3111 away from the output shaft 2. Alternatively, the first protrusion 212 can also be located in the middle section of the external thread 211, and the first groove 3112 can also be located in the middle section of the internal thread 3111, as long as the first protrusion 212 can be embedded in the first groove 3112 when the external thread 211 and the internal thread 3111 are fully engaged.

[0041] In some implementations, reference Figures 1 to 7 As shown, the mounting member 310 is provided with a mounting hole 312 for accommodating the connector 320; the connector 320 also includes a shaft portion 322, which is located inside the mounting hole 312. There are two top heads 321, which are located at opposite ends of the shaft portion 322. The top heads 321 protrude from the outer wall of the mounting member 310 and can retract when force is applied and pop out when no force is applied. The top heads 321 can engage with the inner wall of the massage head 1 when the connector 320 is connected to the massage head 1.

[0042] In the above manner, when the connector 320 and the mounting part 310 are connected and assembled, the shaft part 322 of the connector 320 can be directly pushed into the mounting hole 312 of the mounting part 310, and the top heads 321 at both ends can be exposed outside the mounting part 310, thus realizing the simple assembly of the plug-in component 3. Furthermore, when the plug-in component 3 is subsequently connected and assembled with the massage head 1, the two top heads 321 can also be snapped onto the inner side wall of the massage head 1 to improve the stability of the connection with the massage head 1.

[0043] To further improve the stability of the connection between connector 320 and mounting component 310, combined with Figure 4 and Figure 5 As shown, one of the shaft portion 322 and the mounting hole 312 is provided with a second protrusion 3221, and the other is provided with a second groove 3121. The second protrusion 3221 can be embedded in the second groove 3121.

[0044] In this manner, when the shaft portion 322 of the connector 320 is inserted into the mounting hole 312 of the mounting member 310, the stability of the connector 320 and the mounting member 310 after connection and fixation can be improved by the second protrusion 3221 embedding into the second groove 3121. Figure 4 and Figure 5 As shown, the second protrusion 3221 can be disposed on the shaft portion 322, and the second groove 3121 is disposed on the inner side wall of the mounting hole 312. Through the one-to-one cooperation between the second protrusion 3221 and the second groove 3121, the connector 320 can be more stably connected and cooperated with the mounting part 310.

[0045] It should be noted that in the above embodiments, the positions of the second protrusion 3221 and the second groove 3121 are exemplary. In embodiments not shown in the figure, the second protrusion 3221 may also be provided on the inner side wall of the mounting hole 312, and the second groove 3121 may also be provided on the shaft portion 322. This utility model does not make specific limitations in this regard.

[0046] Furthermore, refer to Figure 4 and Figure 5 As shown, multiple second protrusions 3221 can be arranged at intervals along the outer periphery of the shaft portion 322, and multiple second grooves 3121 can be arranged at intervals along the inner periphery of the mounting hole 312. The number of second protrusions 3221 and second grooves 3121 correspond one-to-one.

[0047] By employing the above-described scheme, the stability of the connection between the connector 320 and the mounting component 310 can be further improved through the one-to-one cooperation of multiple second protrusions 3221 and multiple second grooves 3121.

[0048] In some implementations, reference Figure 1 , Figure 2 and Figure 4 As shown, the outer wall of the mounting component 310 is provided with a limiting part 313, which is used to limit the massage head 1 circumferentially when the plug-in component 3 is connected to the massage head 1.

[0049] In the manner described above, when the plug-in assembly 3 is connected to the massage head 1, the limiting part 313 can cooperate with the groove on the inner side wall of the massage head 1, thereby preventing the massage head 1 from rotating relative to the plug-in assembly 3, which can further improve the stability of the connection between the plug-in assembly 3 and the massage head 1. Furthermore, in order to further improve the connection stability between the plug-in assembly 3 and the massage head 1, multiple limiting parts 313 can be arranged at intervals along the outer side wall of the mounting member 310. By having multiple limiting parts 313 cooperate with multiple grooves in the massage head 1 one by one, the connection stability between the plug-in assembly 3 and the massage head 1 can be further improved.

[0050] In some implementations, reference Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown, the mounting component 310 also includes a limiting base 314 at one end. The limiting base 314 can control the insertion depth of the mounting component 310 into the massage head 1. That is, when the end face of the limiting base 314 facing the side close to the massage head 1 cooperates with the massage head 1, it will fit against the inner wall of the massage head 1, thereby reducing or avoiding the situation where the mounting component 310 cannot be easily pulled out later due to excessive insertion, so as to reduce the occurrence of situations where it cannot be repaired or replaced.

[0051] A second aspect of this utility model provides a massage gun, as shown in the reference. Figures 1 to 7 As shown, the massage gun includes a body 4, a massage head 1, and the output shaft connection structure mentioned in the above specific embodiments. The output shaft connection structure has all the beneficial effects of the above specific embodiments. The body 4 is connected to the output shaft 2 of the output shaft connection structure, and the massage head 1 is connected to the plug-in component 3 of the output shaft connection structure. Since the massage gun also has all the beneficial effects of the above specific embodiments, the present invention will not be described in detail here.

[0052] 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. An output shaft connection structure for connection with a massage head (1), characterized in that, include: An output shaft (2) is provided at one end of which is a plug-in portion (210) and an external thread (211) is provided on the plug-in portion (210); A plug-in assembly (3) for connecting a massage head (1) includes a mounting part (310) and a connector (320). The mounting part (310) includes a plug-in channel (311) into which the plug-in part (210) can be inserted. The plug-in channel (311) has an internal thread (3111). The plug-in part (210) is screwed to the internal thread (3111) of the plug-in channel (311) via the external thread (211). One of the plug-in part (210) and the plug-in channel (311) has a first protrusion (212) and the other has a first groove (3112). The first protrusion (212) can be embedded in the first groove (3112) after the external thread (211) and the internal thread (3111) are screwed into place. The connector (320) includes a top head (321) for connecting the massage head (1).

2. The output shaft connection structure according to claim 1, characterized by The total engagement length of the external thread (211) is the same as that of the internal thread (3111).

3. The output shaft connection structure according to claim 2, characterized by The first protrusion (212) is provided on the plug-in portion (210), the first groove (3112) is provided on the plug-in channel (311), a clearance space (213) is formed between the plug-in portion (210) and the plug-in channel (311), and clearance portions (3113) are respectively provided on both sides of the plug-in channel (311) located on the first groove (3112).

4. The output shaft connection structure according to claim 3, characterized by The first protrusion (212) is provided at the end of the threaded segment of the insertion part (210) located on the external thread (211), and the first groove (3112) is provided at the end of the threaded segment of the insertion channel (311) located on the internal thread (3111).

5. The output shaft connection structure according to claim 1, characterized by The mounting member (310) is provided with a mounting hole (312) for receiving the connector (320); The connector (320) further includes a shaft (322) located in the mounting hole (312). There are two top heads (321) located at opposite ends of the shaft (322). The top heads (321) protrude from the outer wall of the mounting member (310) and can retract when force is applied and pop out when no force is applied. The top heads (321) can engage with the inner wall of the massage head (1) when the connector (320) is connected to the massage head (1).

6. The output shaft connection structure according to claim 5, characterized by One of the shaft portion (322) and the mounting hole (312) is provided with a second protrusion (3221), and the other is provided with a second groove (3121), wherein the second protrusion (3221) can be inserted into the second groove (3121).

7. The output shaft connection structure according to claim 6, characterized by The second protrusions (3221) are arranged in multiple intervals along the outer periphery of the shaft portion (322), and the second grooves (3121) are arranged in multiple intervals along the inner periphery of the mounting hole (312). The number of the second protrusions (3221) and the number of the second grooves (3121) correspond one-to-one.

8. The output shaft connection structure of claim 1, wherein The outer side wall of the mounting component (310) is provided with a limiting part (313), which is used to limit the massage head (1) circumferentially when the plug-in component (3) is connected to the massage head (1).

9. The output shaft connection structure of claim 1, wherein The mounting component (310) also includes a limiting base (314) located at one end thereof.

10. A massage gun, characterized in that, It includes a body (4), a massage head (1), and an output shaft connection structure as described in any one of claims 1-9, wherein the body (4) is connected to the output shaft (2) of the output shaft connection structure, and the massage head (1) is connected to the plug-in assembly (3) of the output shaft connection structure.

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