CN113908027A

CN113908027A - Rotating device and handheld massager

Info

Publication number: CN113908027A
Application number: CN202011324097.3A
Authority: CN
Inventors: 洪仲进; 陈宗灵
Original assignee: Xiamen Xinzhaochen Electronic Co ltd
Current assignee: Xiamen Xinzhaochen Electronic Co ltd
Priority date: 2020-07-09
Filing date: 2020-11-23
Publication date: 2022-01-11
Also published as: CN214968684U

Abstract

The invention relates to a rotating device, comprising: the mounting part is provided with a push rod sleeving part, and the push rod sleeving part is provided with a rotation stopping part configuration hole; the rotation stopping piece is arranged in the rotation stopping piece arrangement hole; the sleeve joint part is provided with a rotation stopping part sleeve joint part sleeved on the push rod sleeve joint part, the inner peripheral wall of the rotation stopping part sleeve joint part is provided with a plurality of rotation stopping part matching grooves arranged at intervals along the circumferential direction, and the positions of the rotation stopping parts correspond to the positions of the rotation stopping part matching grooves; a switching push rod having a rotation restricting engagement portion and a rotation permitting engagement portion at an outer periphery thereof; the rotation limiting matching part and the rotation allowing matching part are arranged adjacently along the axial direction or the circumferential direction, and the switching push rod correspondingly switches the rotation limiting matching part or the rotation allowing matching part to be matched with the rotation stopping piece through moving along the axial direction or rotating along the circumferential direction. The socket piece of the rotating device can be rotationally switched at different positions. The application further provides a hand-held massage device.

Description

Rotating device and handheld massager

Technical Field

The present invention relates to a technique of a rotary joint structure, and particularly, to a rotary device and a hand-held massager.

Background

Patent application CN201920022372.2 discloses a curling iron, which comprises a heating rod, a pivot member and a handle, wherein the heating rod and the handle have matching slopes, and the pivot member enables the heating rod to rotate to enable the central shaft of the heating rod to be coaxial or bent relative to the central shaft of the handle. The patent application CN201920022372.2 is a common variable angle rotating device, which is also applied in other fields, such as a rechargeable pen holder device disclosed in patent application CN201811088031.1, and a water outlet of a faucet used in public places disclosed in patent application CN 201920512539.3. The structural design of the rotating device can only meet the switching requirements of the coaxial state and the bending state, and has certain limitation in application. In view of this, the present application is specifically made.

Disclosure of Invention

The invention aims to provide a novel structural design of a rotating device.

To solve the above technical problem, the present invention provides a rotation device, comprising: the mounting part is provided with a push rod sleeving part, and the push rod sleeving part is provided with a rotation stopping part configuration hole; a rotation stopper installed in the rotation stopper disposition hole and movable between a rotation restricting position and a rotation permitting position in a radial direction; the socket joint part is provided with a rotation stopping part socket joint part sleeved on the push rod socket joint part, the inner peripheral wall of the rotation stopping part socket joint part is provided with a plurality of rotation stopping part matching grooves arranged at intervals along the circumferential direction, the position of the rotation stopping part corresponds to the position of the rotation stopping part matching grooves, and the rotation stopping part can be embedded into the rotation stopping part matching grooves when moving outwards along the radial direction from a rotation allowing position to a rotation limiting position; a switching push rod, the periphery of which is provided with a rotation limiting matching part and a rotation allowing matching part, the radial dimension of the rotation limiting matching part meets the requirement of keeping the rotation stopping piece at the rotation limiting position, and the radial dimension of the rotation allowing matching part meets the requirement of enabling the rotation stopping piece to move inwards from the rotation limiting position to the rotation allowing position along the radial direction; the rotation limiting matching part and the rotation allowing matching part are arranged adjacently along the axial direction or the circumferential direction, and the switching push rod correspondingly switches the rotation limiting matching part or the rotation allowing matching part to be matched with the rotation stopping piece through moving along the axial direction or rotating along the circumferential direction.

Preferably, the rotation restricting engagement portion and the rotation permitting engagement portion are disposed adjacent to each other in the axial direction; the rotating device is provided with a buffer part abutting part, and a push rod reset spring is arranged between the buffer part abutting part and the switching push rod along the axial direction.

Preferably, the rotation restricting engagement portion is located axially between the push rod return spring and the rotation permitting engagement portion.

Preferably, one side of the switching push rod, which is far away from the return spring along the axial direction, is provided with an axial displacement limiting piece for limiting the axial movement range of the switching push rod.

Preferably, the switching push rod has an axial movement amount restricting portion, and the rotation allowing engagement portion is located axially between the rotation restricting engagement portion and the axial movement amount restricting portion; the radial dimension of the axial movement amount limiting part is smaller than that of the rotation allowing matching part, and an axial displacement amount limiting part for limiting the axial movement range of the switching push rod is sleeved on the periphery of the axial movement amount limiting part.

Preferably, the axial displacement limiting member is fixedly connected with the push rod sleeving part.

Preferably, the rotation preventing member engaging portion is provided with a plurality of positioning holes arranged at intervals in a circumferential direction along a side of the axial displacement amount restricting member facing in the axial direction; the axial displacement limiting part is provided with a mounting groove, a spring part and an embedded part are arranged in the mounting groove, and the spring part is abutted between the embedded part and the bottom wall of the mounting groove; when the rotation stopping piece sleeving part rotates to enable the positioning hole to correspond to the mounting groove, the spring piece pushes the embedded piece to be embedded into the positioning hole.

Preferably, the rotation preventing member nesting portion is provided with a mounting groove along one side of the axial displacement limiting member facing in the axial direction; the axial displacement limiting piece (3) is provided with a plurality of positioning holes which are arranged at intervals along the circumferential direction along one side of the axial direction facing the rotation stopping piece sleeving part; the spring part is abutted between the embedded part and the bottom wall of the mounting groove; when the rotation stopping piece sleeving part rotates to enable the positioning hole to correspond to the mounting groove, the spring piece pushes the embedded piece to be embedded into the positioning hole.

Preferably, the rotation stopper is of a ball structure or a rectangular structure having an arc-shaped engagement surface slidably engaged with the rotation restricting engagement portion and the rotation permitting engagement portion.

The application further provides a hand-held massager, comprising: the massage device comprises a rotating device, a massage device and an adjusting piece, wherein the rotating device is fixedly connected to the mounting piece or the sleeve piece, and the adjusting piece controls the switching push rod to move.

By adopting the technical scheme, the invention can obtain the following technical effects:

1. according to the rotating device, when the rotation limiting matching part and the rotation allowing matching part are arranged adjacent to each other in the axial direction, when the switching push rod moves in the axial direction to enable the rotation limiting matching part to be matched with the rotation stopping piece, the rotation stopping piece stays at the rotation limiting position and is kept in the rotation stopping piece matching groove, the sleeving piece is limited and cannot rotate relative to the mounting piece, when the switching push rod moves in the axial direction to enable the rotation allowing matching part to be matched with the rotation stopping piece in a rolling mode, the rotation stopping piece can move in the rotation limiting position and the rotation allowing position in the radial direction, the sleeving piece can rotate relative to the mounting piece, the number of positions where the sleeving piece can stay after rotating is related to the number of the rotation stopping piece matching grooves, the number of the rotation stopping piece matching grooves is larger, the number of positions where the sleeving piece can stay is larger, and the structure design of the rotating device enables the sleeving piece to be rotated and switched at multiple different positions; when the rotation limiting matching part and the rotation allowing matching part are arranged adjacently along the circumferential direction, the switching push rod switches the rotation limiting matching part and the rotation allowing matching part to be matched with the rotation stopping piece through rotating along the circumferential direction;

2. under the condition that a push rod return spring is designed, the push rod return spring can play a role in returning and pushing the switching push rod;

3. under the condition of designing the positioning hole, the spring part and the embedded part, a user can judge whether the sleeved part rotates in place relative to the mounting part according to sound and vibration generated by impacting the sleeved part of the rotation stopping part when the positioning balls move;

4. when the rotation stopping piece is embedded into the rotation stopping piece matching groove, the rotation stopping piece and the sleeve joint piece are not easy to shake, and the structure is stable.

Drawings

FIG. 1 is a schematic view of a rotary apparatus according to an embodiment;

fig. 2 and fig. 3 are process diagrams illustrating the assembly of the rotating apparatus according to the second embodiment from the first disassembled state to the second disassembled state from different viewing angles, respectively;

FIG. 4 depicts a schematic view of a socket;

FIG. 5 is a schematic view showing the position change of the switching push rod moving in the axial direction in a sectional view A-A of the rotary device;

FIG. 6 is a schematic view showing the position change of the switching push rod in the axial direction in the state of the rotary device being cut along the line B-B;

FIG. 7 is a schematic view of a hand-held massager of an embodiment;

FIG. 8 depicts a cross-sectional view of a hand-held massager of an embodiment;

FIG. 9 is a schematic view of a rotary device according to another embodiment of the present application;

FIG. 10 is a schematic view showing a partial structure of a rotating apparatus according to another embodiment;

FIG. 11 is a schematic view of a switching push rod of a rotary device according to another embodiment;

fig. 12 shows an exploded view of a hand-held massager of another embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

With reference to fig. 1 to 6, in an embodiment, the rotating device of the present application includes: the device comprises a sleeve joint part 1, a mounting part 2, an axial displacement limiting part 3, a switching push rod 4, a push rod return spring 5, a rotation stopping part 6, an embedded part 7 and a spring part 8. The rotation stop 6 in this embodiment is a ball.

Socket member 1 formula structure as an organic whole, it has spline piece suit portion 1A and restriction piece suit portion 1B, and restriction piece suit portion 1B's radial dimension is greater than the radial dimension of spline piece suit portion 1A, and restriction piece suit portion 1B sets up on the right side periphery wall of spline piece suit portion 1A along the axial. As shown in fig. 4, the inner peripheral wall of the rotation stopper nesting portion 1A has a plurality of (4 in this embodiment) rotation stopper fitting grooves S1 arranged at intervals in the circumferential direction, and an inner wall S2 in rolling fit with the rotation stopper 6 is between adjacent rotation stopper fitting grooves S1. The rotation stopping member 6 is provided in plurality (4 corresponding to the present embodiment), the positions of the rotation stopping members 6 correspond to the positions of the rotation stopping member fitting grooves S1, and are fitted into the plurality of rotation stopper fitting grooves S1, respectively, when moving radially outward from the rotation permitting position to the rotation restricting position, specifically, the plurality of rotation stoppers 6 are rotatably fitted into the plurality of rotation stopper fitting holes K, respectively (the number of rotation stoppers 6 and rotation stopper fitting holes K may be one), and is restricted by the rotation stop fitting hole K to move radially between the rotation restricting position and the rotation permitting position, as shown in fig. 5, after the rotation stopper 6 is mounted in the rotation stopper mounting hole K, the outer wall of the rotation stopper mounting hole K of the rotation stopper attaching portion 1A is pressed to form a restricting wall 1D for restricting the separation of the rotation stopper 6, and the rotation stopper 6 is restricted by the restricting wall 1D and does not separate when moving radially inward and outward. It should be noted that the manner of keeping the rotation stopper 6 from being detached is not limited to the provision of the restricting wall 1D, and specifically, in another embodiment, the rotation stopper 6 may be a ball made of a rubber material, which has a certain deformability and is fitted into the ball protection hole K by being deformed by a force; in another embodiment, after the rotation stopping member 6 is installed into the ball protection hole K along the radial direction, and the rotation stopping member coupling portion 1A is coupled to the push rod coupling portion 2A, the rotation stopping member 6 is also restricted by the rotation stopping member coupling portion 1A and cannot be separated, that is, a limiting wall 1D is provided, and the limiting wall 1D can facilitate the integral transportation of the installation member 2 equipped with the rotation stopping member 6 before the installation with other components.

The installed part 2 is the integral type structure, and it has push rod box-connecting portion 2A and buffer butt portion 2B, and buffer butt portion 2B's radial dimension is greater than push rod box-connecting portion 2A's radial dimension, and buffer butt portion 2B sets up in push rod box-connecting portion 2A's left side along the axial. The push rod sleeving part 2A is provided with a plurality of (4 in this embodiment) rotation stopping piece configuration holes K arranged at intervals along the circumferential direction. The rotation stopping piece sleeving part 1A is sleeved on the push rod sleeving part 2A. The mounting member 2A may be a copper sleeve.

The axial displacement amount limiting part 3 is sleeved in the limiting part sleeving part 1B, and the axial displacement amount limiting part 3 is fixedly connected with the push rod sleeving part 2A through a thread structure. The rotation stopper nesting portion 1A is provided with a plurality of (4 in this embodiment) positioning holes 1C provided at intervals in the circumferential direction on the side facing the axial displacement amount limiting member 3 in the axial direction, and in this embodiment, the plurality of positioning holes 1C correspond to the plurality of rotation stopper fitting grooves S1 in position. The axial displacement limiting piece 3 is provided with a mounting groove 3A corresponding to the positions of the positioning holes 1C, a spring piece 8 and an embedded piece 7 are arranged in the mounting groove 3A, the spring piece 8 abuts between the embedded piece 7 and the bottom wall of the mounting groove 3A, and the embedded piece 7 is a ball. Stop and rotate a suit portion 1A and rotate to make locating hole 1C and mounting groove 3A correspond when, spring part 8 promotes gomphosis piece 7 embedding locating hole 1C, and at this in-process, the sound and the vibration that impact stop and rotate a suit portion 1A production when location pearl 1C moves about, convenience of customers judges whether cup joint 1 rotates to target in place relatively installed part 1. The rotation stop member fitting portion 1A may be a steel fitting portion, and the fitting member 7 may be a steel ball to provide sound and vibration. It is easy to understand that the positions of the positioning hole 1C and the mounting groove 3A can be changed, and the spring element 8 and the embedded element 7 can be arranged on the rotation stop member sleeving part 1A in an adjustable manner, specifically, the rotation stop member sleeving part 1A is provided with the mounting groove along the side facing the axial displacement limiting element 3 along the axial direction, the axial displacement limiting element 3 is provided with a plurality of positioning holes arranged at intervals along the circumferential direction along the side facing the rotation stop member sleeving part 1A along the axial direction, and the plurality of positioning holes correspond to the positions of the plurality of rotation stop member matching grooves S1; the spring part is abutted between the embedded part and the bottom wall of the mounting groove; when the rotation stopping piece sleeving part rotates to enable the positioning hole to correspond to the mounting groove, the spring piece pushes the embedded piece to be embedded into the positioning hole. The positions of the positioning holes 1C and the rotation stopping piece matching grooves S1 may not correspond to each other, and they may be staggered by a certain angle in the circumferential direction, so that the spring member can push the inserting piece to be inserted into the positioning hole only when the rotation stopping piece sleeving part rotates to make the positioning hole and the mounting groove correspond to each other. In another embodiment, the number of the mounting grooves 3A, the spring members 8, and the fitting members 7 may be the same as the number of the positioning holes, and is not limited to only one of the foregoing embodiments.

The switching push rod 4 has a rotation-restricting engagement portion 4A, a rotation-permitting engagement portion 4B, and an axial-movement-amount restricting portion 4C on the outer periphery thereof, the rotation-restricting engagement portion 4A and the rotation-permitting engagement portion 4B are disposed adjacent to each other in the axial direction, and the rotation-permitting engagement portion 4B is located between the rotation-restricting engagement portion 4A and the axial-movement-amount restricting portion 4C in the axial direction. The radial dimension of the rotation restricting fitting portion 4A is larger than that of the rotation permitting fitting portion 4B, and the radial dimension of the axial movement amount restricting portion 4C is smaller than that of the rotation permitting fitting portion 4B. The rotation restricting fitting portion 4A has a radial dimension that satisfies a requirement for holding the rotation stopper 6 at the rotation restricting position, and the rotation permitting fitting portion 4B has a radial dimension that satisfies a requirement for moving the rotation stopper 6 radially inward from the rotation restricting position to the rotation permitting position. In the present embodiment, the rotation restricting fitting portion 4A is located axially between the push rod return spring 5 and the rotation permitting fitting portion 4B. Referring to fig. 5 and 6, the switching push rod 4 switches the rotation limiting engaging portion 4A or the rotation allowing engaging portion 4B to be in rolling engagement with the rotation stopper 6 by moving in the axial direction, and after the switching push rod 4 moves leftward in the axial direction in the view of fig. 5, the switching push rod 4 is switched from the engagement of the rotation limiting engaging portion 4A with the rotation stopper 6 to the engagement of the rotation allowing engaging portion 4B with the rotation stopper 6. The axial displacement amount limiter 3 is fitted around the outer periphery of the axial movement amount limiter 4C to limit the axial movement range of the switching push rod 4.

The push rod reset spring 5 is axially arranged between the buffer abutting part 2B and the switching push rod 4, the axial displacement limiting part 3 is positioned on one side of the switching push rod 4, which is far away from the push rod reset spring 5 along the axial direction, and the axial displacement limiting part 3 is used for limiting the axial moving range of the switching push rod 4. Referring to fig. 5, when the switching push rod 4 is pushed to move leftward in the axial direction, the push rod return spring 6 is elastically deformed.

The above is the first embodiment of the rotating device of the present application, and with reference to fig. 5, the operation method is as follows: in the initial state, the rotation limiting matching part 4A of the switching push rod 4 is matched with the rotation stopping piece 6, the rotation stopping piece 6 is limited to stay at the rotation limiting position, at the moment, the rotation stopping piece 6 is embedded into the rotation stopping piece matching groove S1, and the socket joint piece 1 cannot rotate relative to the mounting piece 2; when the position of the sleeve joint part 1 needs to be adjusted, the switching push rod 4 is pressed to move leftwards along the axial direction to compress the push rod return spring 5, at the moment, the rotation-allowable matching part 4B of the switching push rod 4 is matched with the rotation-stopping piece 6, the rotation-stopping piece 6 is not limited and can move inwards to a rotation-allowable position from a rotation-limiting position along the radial direction, and then the sleeve joint part 1 can rotate relative to the installation part; in the process of rotating the socket joint part 1, the embedded part 7 is pushed to compress the spring part 8; further, when the switching push rod 4 is not pressed any more after the socket member 1 is rotated to the right, the push rod return spring 5 returns to push the switching push rod 4 to move rightward in the axial direction, the rotation stopping member 6 is pushed by the switching push rod 4 to move radially outward from the rotation permitting position to the rotation restricting position, the rotation stopping member 6 is inserted into the rotation stopping member fitting groove S1 again, and at the same time, the fitting member 7 is returned by the spring member 8 to be pushed to be inserted into the positioning hole 1C.

With reference to fig. 7 and 8, the present application further provides a handheld massager, comprising: the rotating device of the first embodiment, the massage device 11 fixed on the mounting member 2. Fig. 7 and 8 only show a partial structure of the massage device, the massage structure can be a common knocking massage structure, a casing 10 for holding by hand is installed on the socket part 1 of the rotary device, an adjusting part 12 matched with the switching push rod 4 is installed on the casing 10, the adjusting part 12 and the switching push rod 4 are matched through an inclined plane, and then the switching push rod 4 is pushed to move when the adjusting part 12 is pressed, so that the massage device 11 can rotate, and when the adjusting part is loosened, the push rod reset spring resets to drive the adjusting part 12 to reset. It is easy to understand that the specific structure of the adjusting member 4 for controlling the movement of the switching push rod 4 is not limited to the above-mentioned manner, and the adjusting member 4 can also be designed to drive the switching push rod 4 to move by toggling, swinging, etc. Meanwhile, it should be understood that the above-mentioned modified embodiment of the rotating device can also be applied to the handheld massage device.

The specific implementation manner of the rotating device of the present application is not limited to the foregoing embodiment, and with reference to fig. 9, unlike the previous embodiment, the switching push rod 4 is driven to reset by the elastic contraction of the push rod reset spring 5, in another embodiment, two sides of the push rod reset spring 5 may be respectively connected to the switching push rod 4 and the spring connecting piece 9, when the push rod reset spring 5 moves leftwards, the push rod reset spring 5 elastically extends, and the reset thereof can also drive the switching push rod 4 to move rightwards. In addition to the embodiment of fig. 9, it is easily understood that the buffer abutting portion may be further omitted. In another embodiment, the push rod return spring 5 may not be provided, and a limiting structure may be additionally provided to control the position of the switching push rod 4. In another embodiment, the rotation device of the present application may omit the fitting member 7 and the spring member 8. Unlike the previous embodiment in which the rotation stopper 6 is a ball, in conjunction with fig. 10, in another embodiment, the rotation stopper 6 may have a rectangular structure as shown in fig. 10, the rotation stopper 6 of fig. 10 has an arc-shaped engagement surface 6A slidably engaged with the rotation restricting engagement portion 4A and the rotation allowing engagement portion 4B, and the rotation stopper 6 only needs to be able to engage with the rotation restricting engagement portion 4A and the rotation allowing engagement portion 4B. Unlike the embodiment in which the engaging member 7 is a ball, in another embodiment, it can be modified to have a structure similar to the rotation stopper of fig. 10. Referring to fig. 11, the rotation restricting fitting portion 4A and the rotation permitting fitting portion 4B may also be adjusted to be disposed adjacent to each other in the circumferential direction, and the switching push rod 4 switches the fitting of the rotation restricting fitting portion 4A and the rotation permitting fitting portion 4B with the rotation stopper 6 by rotating in the circumferential direction.

Referring to fig. 12, in the embodiment of fig. 11, in the hand-held massage apparatus according to another embodiment of the present application, the adjustment member 12 has a straight tooth portion, the adjustment member 4 has an annular tooth portion, and the straight tooth portion and the annular tooth portion are engaged with each other, so that the adjustment member 12 can control the rotation of the switching push rod 4 by moving relative to the housing 10. Other characteristics not mentioned in the present embodiment can be understood by referring to the foregoing embodiments, and are not described again.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary device, comprising:

the mounting piece (2) is provided with a push rod sleeving part (2A), and a rotation stopping piece configuration hole (K) is formed in the push rod sleeving part (2A);

a rotation stopper (6) mounted in the rotation stopper fitting hole (K) and movable in a radial direction between a rotation restricting position and a rotation permitting position;

the rotating stopping piece is characterized by comprising a sleeving piece (1) which is provided with a rotating stopping piece sleeving part (1A) sleeved on the push rod sleeving part (2A), the inner peripheral wall of the rotating stopping piece sleeving part (1A) is provided with a plurality of rotating stopping piece matching grooves (S1) arranged at intervals along the circumferential direction, the position of the rotating stopping piece (6) corresponds to the position of the rotating stopping piece matching groove (S1), and the rotating stopping piece (6) can be embedded into the rotating stopping piece matching groove (S1) when moving outwards along the radial direction from a rotation allowing position to a rotation limiting position;

a switching push rod (4) having a rotation-restricting engagement portion (4A) and a rotation-permitting engagement portion (4B) on the outer periphery thereof, the rotation-restricting engagement portion (4A) having a radial dimension that satisfies a requirement for holding the rotation stopper (6) at the rotation-restricting position, and the rotation-permitting engagement portion (4B) having a radial dimension that satisfies a requirement for moving the rotation stopper (6) radially inward from the rotation-restricting position to the rotation-permitting position; the rotation limiting matching part (4A) and the rotation allowing matching part (4B) are arranged adjacently along the axial direction or the circumferential direction, and the switching push rod (4) correspondingly switches the rotation limiting matching part (4A) or the rotation allowing matching part (4B) to be matched with the rotation stopping piece (6) through moving along the axial direction or rotating along the circumferential direction.

2. A rotary device according to claim 1, wherein the rotation-restricting fitting portion (4A) and the rotation-permitting fitting portion (4B) are disposed adjacent to each other in the axial direction; the rotating device is provided with a buffer abutting part (2B), and a push rod reset spring (5) is arranged between the buffer abutting part (2B) and the switching push rod (4) along the axial direction.

3. A swivel arrangement according to claim 2, characterized in that the rotation limiting engagement (4A) is located axially between the push rod return spring (5) and the rotation allowing engagement (4B).

4. The rotating device according to claim 2, characterized in that the side of the switching push rod (4) axially remote from the return spring (5) is provided with an axial displacement amount limiting member (3) that limits the axial range of motion of the switching push rod (4).

5. The rotating device according to claim 3, wherein the switching push rod (4) has an axial movement amount limiting portion (4C), and a rotation permitting engagement portion (4B) is located axially between the rotation limiting engagement portion (4A) and the axial movement amount limiting portion (4C); an axial displacement limiting piece (3) for limiting the axial movement range of the switching push rod (4) is sleeved on the periphery of the axial movement limiting part (4C).

6. The rotating device according to claim 5, wherein the axial displacement amount restricting member (3) and the push rod socket portion (2A) are fixedly connected.

7. The rotating device according to claim 6, wherein the rotation stopper nesting portion (1A) is provided with a plurality of positioning holes (1C) provided at intervals in a circumferential direction on a side facing the axial displacement amount restricting member (3) in the axial direction; the axial displacement limiting part (3) is provided with a mounting groove (3A), a spring part (8) and an embedded part (7) are arranged in the mounting groove (3A), and the spring part (8) is abutted between the embedded part (7) and the bottom wall of the mounting groove (3A); when the rotation stopping piece sleeving part (1A) rotates to enable the positioning hole (1C) to correspond to the mounting groove (3A), the spring piece (8) pushes the embedded piece (7) to be embedded into the positioning hole (1C).

8. The rotating device according to claim 6, wherein the rotation stopper nesting portion (1A) is provided with a mounting groove in a side facing the axial displacement amount restricting member (3) in the axial direction; the axial displacement limiting piece (3) is provided with a plurality of positioning holes which are arranged at intervals along the circumferential direction along one side of the axial direction facing the rotation stopping piece sleeving part (1A); the spring part is abutted between the embedded part and the bottom wall of the mounting groove; when the rotation stopping piece sleeving part rotates to enable the positioning hole to correspond to the mounting groove, the spring piece pushes the embedded piece to be embedded into the positioning hole.

9. The rotating device according to any one of claims 1 to 8, wherein the rotation stopper (6) is of a ball structure or a rectangular-like structure having an arc-shaped engagement face (6A) slidably engaged with the rotation restricting engagement portion (4A) and the rotation permitting engagement portion (4B).

10. A hand-held massager, comprising: -a rotation device according to any one of claims 1 to 9, -a massaging device fixed to the mounting (2) or to the socket (1), and-an adjustment member (12) controlling the movement of the switching push rod (4).