Damping rotation structure, hovering arm and physiotherapy equipment

Abstract

The utility model relates to the technical field of damping hovering structures, and discloses a damping rotating structure, a hovering arm and physiotherapy equipment, the damping rotating structure comprises a first connecting piece and a second connecting piece, a damping mechanism is connected between the first connecting piece and the second connecting piece, and the first connecting piece and the second connecting piece are rotationally connected with each other under the connection of the damping mechanism. An angle limiting unit used for controlling the relative rotation angle between the first connecting piece and the second connecting piece is connected between the first connecting piece and the second connecting piece. The angle limiting unit is used for controlling the angle range of relative rotation of the first connecting piece and the second connecting piece, and the problem that safety risks exist in the using process of a hovering arm in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to damping hover structure technical field, concretely relates to a damping rotation structure, hover arm and physiotherapy equipment. BACKGROUND

[0002] At present, connecting arm structures are used in many mechanical devices, for example, movable arms for mobile phones and tablets, lamp adjusting arms, medical instruments and physiotherapy equipment, etc. all use rotatable supporting arms. The existing supporting arms are usually composed of multiple rotating arms, which are connected to each other for rotation between adjacent rotating arms. Taking two adjacent supporting arms for fixing devices as an example, one end of one supporting arm is connected to a fixed part such as a base, a support or a rack, and the other end of the supporting arm is connected to the other supporting arm, and the mobile phone, tablet and other components are connected to the free end of the other supporting arm. When in use, the two supporting arms are rotated to adjust the height and angle of the mobile phone, tablet display and medical device components to meet the use requirements.

[0003] In order to further improve the stability during use, damping structures or friction structures, etc. are provided in the existing supporting arm structure, so that the connected components can be positioned and supported after the supporting arm is rotated, so that the connected components realize "hovering", forming the hovering arm in the prior art. For example, the utility model patent with the announcement number CN219243056U discloses a folding damping rocker arm support, which has damping function by setting the first damping pivot, the second damping pivot and the third damping pivot, so as to arbitrarily position the angle of the rocker arm. For another example, the utility model patent with the announcement number CN213206300U discloses a universal damping folding rocker arm support, which includes a long rocker arm, a short rocker arm, a middle rocker arm, a small disc damping pivot and a large disc damping pivot. The long rocker arm, the short rocker arm and the middle rocker arm are connected through the large disc damping pivot. The disc damping pivot is also provided in the rocker arm support, so that the rocker arm support has damping function and can arbitrarily position the angle of the rocker arm.

[0004] Although the damping structure is provided in the existing hovering arm structure, it can realize hovering at any position, but in actual use, the damping function of the damping structure may decrease or even disappear after long-term use of the hovering arm structure. At this time, the damping effect of the hovering arm on the supported components is weakened, which may cause the hovering arm to automatically rotate under the gravity of the connected components and cannot continue to support, which not only may cause the connected components such as mobile phones and tablets to fall and be damaged, but also for medical instruments or physiotherapy equipment, etc. For example, the temperature of the physiotherapy head in the physiotherapy equipment is relatively high. Once the hovering arm fails during use, the high-temperature physiotherapy head may rotate downward to contact the user and cause the user to be scalded. In addition, when the damping structure in the hovering arm has reduced or failed damping effect, the two supporting arms in the existing hovering arm are easy to rotate to the state of being in close contact, and the two supporting arms are easy to pinch the user when the included angle is small, which has safety risks. Utility model content

[0005] The utility model intends to provide a damping rotation structure, hover arm and physiotherapy equipment, to solve the problem that the prior art hover arm has safety risk in use.

[0006] To solve the above problem, the utility model adopts the following technical scheme: a damping rotation structure, including first connecting piece and second connecting piece, first connecting piece and second connecting piece are connected with damping mechanism between, first connecting piece and second connecting piece are connected with angle limiting unit for controlling relative rotation angle size between first connecting piece and second connecting piece under damping mechanism connection and mutual rotation connection.

[0007] The principle of the scheme is: the first connecting piece and the second connecting piece in the application are connected with the damping mechanism, so that the first connecting piece and the second connecting piece are rotationally connected through the damping mechanism, and under the resistance of the damping mechanism, the relative rotation state can be maintained after the first connecting piece and the second connecting piece are relatively rotated, when the connecting components such as mobile phones, tablets, medical instruments or physiotherapy equipment in the prior art are connected, hovering can be realized to facilitate the use of the corresponding connecting components.In addition, the angle limiting unit is connected between the first connecting piece and the second connecting piece in the application, the relative rotation angle of the first connecting piece and the second connecting piece is controlled by the angle limiting unit, that is, under the control of the angle limiting unit, the rotation range of the first connecting piece and the second connecting piece is within a certain angle, avoiding the situation that the first connecting piece and the second connecting piece are rotated to a small included angle and the user is injured during use, playing a safety protection role.

[0008] The beneficial effects of the scheme are:

[0009] 1. Normal use process can play a safety protection role: the rotation angle between the first connecting piece and the second connecting piece is limited and controlled by the angle limiting unit in the application, avoiding the situation that the first connecting piece and the second connecting piece are rotated to a small included angle and the user is injured due to improper operation during normal use, improving the safety during use.

[0010] 2. The damping mechanism can also play a safety protection role when it is abnormal: compared with the prior art in which only a damping structure is arranged in the hovering arm, the damping mechanism is arranged in the application so that the first connecting member and the second connecting member can be subjected to damping action after relative rotation, and the angle limiting unit is further arranged in the application to control the relative rotation angle of the first connecting member and the second connecting member, so that when the damping effect of the damping mechanism is weakened or disappears, the first connecting member and the second connecting member can be prevented from being rotated to the state of being in close contact with each other, causing the connecting component (of course, the connecting component can also be connected to the second connecting member) connected to the first connecting member to be rotated to collide against the second connecting member or other connecting members connected to the second connecting member in the prior art, thereby playing a safety protection role on the connecting component; more importantly, for medical instruments and physiotherapy equipment, for example, when the connecting component is a physiotherapy lamp head in the physiotherapy equipment, if the damping mechanism fails during use of the equipment, even when the first connecting member is rotated relative to the second connecting member under the gravity of the connecting component, the first connecting member can be prevented from being rotated downward to cause the high-temperature physiotherapy lamp head to contact the user, thereby playing a safety protection role.

[0011] Preferably, as an improvement, the angle limiting unit comprises a first limiting member and a second limiting member, the first limiting member is connected to the first connecting member, the second limiting member is connected to the second connecting member, and the distance between the first limiting member and the second limiting member and the central axis of the relative rotation of the first connecting member and the second connecting member is equal.

[0012] In the present scheme, the distance between the first limiting member and the second limiting member and the central axis of the relative rotation of the first connecting member and the second connecting member is equal, and during the relative rotation of the first connecting member and the second connecting member, the first limiting member and the second limiting member are located on the same rotation circumference, when the first connecting member and the second connecting member are rotated to the appropriate position, the first limiting member and the second limiting member are in contact with each other and abut, thereby stopping the relative rotation of the first connecting member and the second connecting member, effectively playing a rotation angle control role.

[0013] Preferably, as an improvement, the first connecting member comprises a first sleeve and a first connecting part fixedly connected to one side of the first sleeve, a first partition plate is fixedly connected in the first sleeve, and the first partition plate divides the first sleeve into a first fixed cavity and a first accommodating cavity; the second connecting member comprises a second sleeve and a second connecting part fixedly connected to one side of the second sleeve, a second partition plate is fixedly connected in the second sleeve, and the second partition plate divides the second sleeve into a second fixed cavity and a second accommodating cavity; the first accommodating cavity and the second accommodating cavity are arranged opposite to each other, the first limiting member is fixedly connected to one side of the first partition plate in the first accommodating cavity, the second limiting member is fixedly connected to one side of the second partition plate in the second accommodating cavity, and the damping mechanism is connected with the first partition plate and the second partition plate.

[0014] In the scheme, the first connecting piece and the second connecting piece are similar in structure, and each includes a sleeve, a partition plate, and a connecting part connected to one side of the sleeve. After the first connecting piece and the second connecting piece are connected to each other, the damping mechanism is connected to the first partition plate and the second partition plate, so that the first sleeve and the second sleeve are coaxial and can rotate relative to each other, and the first accommodating cavity and the second accommodating cavity are arranged opposite to each other. The first limiting part is fixedly connected to one side of the first partition plate in the first accommodating cavity, and the second limiting part is fixedly connected to one side of the second partition plate in the second accommodating cavity, so that the first limiting part and the second limiting part are located in the sealed space surrounded by the first accommodating cavity and the second accommodating cavity, avoiding the influence of the first limiting part and the second limiting part on the parts or other structures in the use process, and improving the stability in the use process. In addition, the damping mechanism is connected to the first partition plate and the second partition plate, so that the main part of the damping mechanism can also be located in the sealed space between the first partition plate and the second partition plate, so that the operation of the damping mechanism is more stable.

[0015] Preferably, as an improvement, the first connecting part includes a first connecting sleeve, and the second connecting part includes a second connecting sleeve. The rotation plane of the first connecting sleeve and the rotation plane of the second connecting sleeve are coplanar. The end of the first limiting part away from the first partition plate protrudes from the end of the first sleeve. The first limiting part and the first connecting sleeve surround a first rotation gap for the second sleeve to rotate. The end of the second limiting part away from the second partition plate protrudes from the end of the second sleeve. The second limiting part and the second connecting sleeve surround a second rotation gap for the first sleeve to rotate.

[0016] The first connecting part and the second connecting part are respectively a first connecting sleeve and a second connecting sleeve. In the use process, the first connecting sleeve is connected with the connecting part of the existing technology such as a mobile phone, a tablet computer, a medical instrument, and a physiotherapy device, and the second connecting sleeve is connected with the fixing part of the existing technology such as a base and a support. In the scheme, the rotation plane of the first connecting sleeve and the rotation plane of the second connecting sleeve are coplanar, so that when the gravity of the connecting part acts on the base, the support, and other fixing parts through the first connecting sleeve and the second connecting sleeve, only a downward force is generated on the second connecting sleeve in the same vertical plane. No lateral component force is generated due to the fact that the rotation plane of the first connecting sleeve and the rotation plane of the second connecting sleeve are not coplanar, thereby improving the stability of the first connecting sleeve and the second connecting sleeve in the rotation use process.

[0017] In addition, in the scheme, one end of the first limiting part protruding from the end of the first sleeve surrounds a first rotation gap with the first connecting sleeve, and the second sleeve is rotationally matched with the first rotation gap. In addition, one end of the second limiting part protruding from the end of the second sleeve surrounds a second rotation gap with the second connecting sleeve, and the first sleeve is rotationally matched with the second rotation gap, so that the rotation of the first sleeve and the second sleeve is more stable, and the stability in the rotation process of the first connecting piece and the second connecting piece is effectively improved.

[0018] Preferably, as an improvement, the damping mechanism comprises a damping seat, a rotating disc, a friction disc and a pressure regulating nut sleeved on the damping seat, and a fixed disc fixedly connected to the damping seat and opposite to the rotating disc; the first partition plate is provided with a first fixed hole, the second partition plate is provided with a second fixed hole, the fixed disc is provided with a first threaded hole matched with the first fixed hole, and the rotating disc is provided with a second threaded hole matched with the second fixed hole.

[0019] In the scheme, the first fixed hole is arranged on the first partition plate, and the second fixed hole is arranged on the second partition plate. During fixing, the first threaded hole on the fixed disc is opposite to the first fixed hole, and the second threaded hole on the rotating disc is opposite to the second fixed hole. Then, the fixed disc and the first partition plate are fixed by using the screw in the prior art, the rotating disc and the second partition plate are fixed, and the pressure regulating nut is rotated to adjust the friction force of the friction disc, so that the friction force of the first partition plate and the second partition plate during relative rotation is adjusted, and the damping force between the first connecting piece and the second connecting piece is adjusted. The structure is simple, and the installation and adjustment are convenient. Meanwhile, during the fixing process, the fixed disc and the rotating disc are fixed from the directions of the first fixed cavity and the second fixed cavity respectively. On the premise that the fixed disc and the rotating disc are located in the sealed cavity formed by the first containing cavity and the second containing cavity, the fixing of the damping mechanism is smoothly realized, and the structure is stable and convenient to disassemble and assemble.

[0020] Preferably, as an improvement, the fixed disc is located in the first containing cavity, the rotating disc is located in the second containing cavity, one end of the damping seat extends to the second fixed cavity through the second partition plate, and the pressure regulating nut is connected to the end of the damping seat located in the second fixed cavity; a fixed protrusion is arranged on the outer wall of the fixed disc, and a first clamping groove matched with the fixed disc and the fixed protrusion is arranged on the first partition plate; a rotating protrusion is arranged on the outer wall of the rotating disc, and a second clamping groove matched with the rotating disc and the rotating protrusion is arranged on the second partition plate.

[0021] In the scheme, the fixed disc is arranged in the first containing cavity, the rotating disc is arranged in the second containing cavity, one end of the damping seat extends to the second fixed cavity through the second partition plate, and the pressure regulating nut is connected to the end of the damping seat extending to the second fixed cavity. During use, the main structure such as the fixed disc and the rotating disc can be arranged in the sealed space surrounded by the first containing cavity and the second containing cavity, thereby achieving good protection. Meanwhile, the pressure regulating nut is located in the second fixed cavity, and the damping size can be adjusted by rotating the pressure regulating nut during use. Of course, in other schemes of the scheme, the rotating disc can be connected to the second partition plate, and the fixed disc can be connected to the first partition plate, which can also achieve connection and use, and details are not described herein.

[0022] In addition, the fixed protrusion is arranged on the outer wall of the fixed disc, the rotating protrusion is arranged on the outer wall of the rotating disc, the first clamping groove is arranged on the first partition plate and matched with the fixed disc and the fixed protrusion, the second clamping groove is arranged on the second partition plate and matched with the rotating disc and the rotating protrusion, the first clamping groove and the second clamping groove can guide the fixed disc and the rotating disc respectively, the first fixed hole on the fixed disc is quickly and accurately matched with the first threaded hole, the second fixed hole on the rotating disc is quickly and accurately matched with the second threaded hole, the installation process is more accurate and efficient; meanwhile, the fixed protrusion is matched with the first clamping groove and the rotating protrusion is matched with the second clamping groove, the stability of the connection between the fixed disc and the first partition plate and the stability of the connection between the rotating disc and the second partition plate can be improved during use, even if the screw is loose, the stability of the connection between the first partition plate and the rotating disc and the stability of the connection between the second partition plate and the rotating disc can be ensured, and the abnormal sound during use can be reduced.

[0023] Preferably, as an improvement, the first sleeve is fixedly connected with the first sealing end cover at one end close to the first fixed cavity, and the second sleeve is fixedly connected with the second sealing end cover at one end close to the second fixed cavity.

[0024] In the scheme, the first end of the first sleeve close to the first fixed cavity is sealed by the first sealing end cover, and the first end of the second sleeve close to the second fixed cavity is sealed by the second sealing end cover, so that the appearance of the damping rotation structure is more concise and more beautiful during use, the pressure regulating nut is not exposed, the pressure regulating nut is prevented from being adjusted at will, and the use is safer.

[0025] Preferably, as an improvement, the included angle between the first connecting piece and the second connecting piece is 60°-180° when the first connecting piece and the second connecting piece rotate under the limitation of the angle limiting unit.

[0026] In the scheme, the first connecting piece and the second connecting piece are limited by the angle limiting unit, and the rotation angle range is 60°-180° when the first connecting piece and the second connecting piece rotate relative to each other. In actual use, one of the connecting pieces (for example, the first connecting piece) connected to the base, the rack and other fixed parts in the prior art is generally in a vertical state, and the rotation angle range of the other connecting piece (for example, the second connecting piece) is 60°-180°. That is, the second connecting piece is rotated to a minimum angle of 60° with the first connecting piece, so as to avoid the second connecting piece from being rotated to a too small angle with the first connecting piece in use, which may cause the connected parts such as mobile phones, tablets and physiotherapy lamp heads connected to the second connecting piece to collide with the fixed parts connected to the first connecting piece, effectively protecting the connected parts, and avoiding the first connecting piece and the second connecting piece from being too small to pinch the user. In addition, the maximum angle of the first connecting piece and the second connecting piece relative to each other is 180°. When the first connecting piece is in a vertical state, the second connecting piece can be rotated to a vertical state at most, so as to avoid the second connecting piece from being rotated to an angle greater than 180°, which may cause the connected parts to exert a force on the base and other fixed parts due to gravity, causing the entire device to roll over (for the device supported by the hovering arm in the prior art, the center of gravity of the device is set on one side of the device according to the use range of the connected parts such as mobile phones, tablets and physiotherapy lamp heads during design. If the connected parts on the hovering arm are rotated to the other side, the device may roll over. Therefore, the maximum angle of the second connecting piece relative to the first connecting piece is 180° in the scheme, so as to avoid the device from rolling over.

[0027] A hovering arm includes two rotating arms, and further includes the damping rotation structure.

[0028] In the scheme, the two rotating arms in the hovering arm are connected to the first connecting piece and the second connecting piece, respectively. The damping mechanism between the first connecting piece and the second connecting piece plays a damping role on the two rotating arms during use, so that the support arm can effectively play a hovering effect. In addition, the relative rotation of the first connecting piece and the second connecting piece is within a safe range due to the angle limiting unit, so as to avoid pinching the user or damaging the connected parts during use, and the use is safer.

[0029] A physiotherapy device includes the damping rotation structure or the hovering arm.

[0030] In this solution, a damping rotation structure or a suspension arm is incorporated into the physiotherapy equipment. This allows the components, such as the lamp head, used for physiotherapy, to be adjusted to suitable positions during use. Furthermore, the angle limiting unit ensures safer operation. The physiotherapy equipment in this solution includes, but is not limited to, infrared physiotherapy devices, specific electromagnetic wave therapy devices, and moxibustion devices. It can also be a combination of two or more physiotherapy methods, such as a three-in-one physiotherapy device combining infrared physiotherapy, specific electromagnetic wave therapy, and moxibustion; these will not be elaborated further here. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of a damped rotation structure in Embodiment 1 of this utility model.

[0032] Figure 2 This is an exploded view of a damped rotation structure according to Embodiment 1 of this utility model.

[0033] Figure 3 This is an exploded view of another embodiment of the present invention.

[0034] Figure 4 for Figure 1 Sectional view along the middle AA.

[0035] Figure 5 for Figure 1 A cross-sectional view along the middle BB.

[0036] Figure 6 This is a schematic diagram of the damping rotation mechanism in Embodiment 1 of this utility model.

[0037] Figure 7 This is a schematic diagram of the suspension arm in Embodiment 1 of this utility model.

[0038] Figure 8 This is a schematic diagram of a physiotherapy device in Embodiment 1 of this utility model, which is equipped with multiple damping rotation mechanisms.

[0039] Figure 9 A schematic diagram of a damping rotation structure in Embodiment 2 of this utility model.

[0040] Figure 10 for Figure 9 A schematic diagram showing the second sealing end cap hidden in the middle.

[0041] Figure 11 This is a schematic diagram of a physiotherapy device in an embodiment of the present invention, which includes multiple damping rotation mechanisms. Detailed Implementation

[0042] The following detailed description illustrates the specific implementation method:

[0043] The reference numerals in the accompanying drawings include: first sleeve 1, mating step 101, first connecting sleeve 2, through hole 201, first partition 3, first fixing hole 301, first slot 302, first fixing cavity 4, first receiving cavity 5, second sleeve 6, second connecting sleeve 7, second partition 8, second fixing hole 801, second slot 802, second fixing cavity 9, second receiving cavity 10, damping seat 11, rotating disk 12, second threaded hole 1201, rotating protrusion 1202, friction disk 13, pressure adjusting nut 14, fixing disk 15, first threaded hole 1501, fixing protrusion 1502, first limiting seat 16, second limiting seat 17, first rotation gap 18, second rotation gap 19, rotating arm 20, first sealing end cap 21, second sealing end cap 22, second mounting hole 2201, and first stud 23.

[0044] Example 1

[0045] This embodiment is as shown in the appendix. Figure 1 As shown: A damped rotation structure includes a first connector and a second connector, and a damping mechanism is connected between the first connector and the second connector. Under the connection of the damping mechanism, the first connector and the second connector achieve a stable rotational connection, and the first connector and the second connector are damped by the damping mechanism during rotation.

[0046] Specifically, in combination Figures 1-4 The first connecting member includes a first sleeve 1 and a first connecting part fixedly connected to the side wall of the first sleeve 1 by means of integral injection molding or casting. The first connecting part is a hollow cylindrical first connecting tube 2, and the end of the first connecting tube 2 connected to the first sleeve 1 is sealed. Simultaneously, a first partition 3 is fixedly connected inside the first sleeve 1 by means of integral injection molding or casting, dividing the interior of the first sleeve 1 into a first fixing cavity 4 and a first receiving cavity 5. Similar to the structure of the first connecting member, the second connecting member includes a second sleeve 6 and a second connecting part fixedly connected to the side of the second sleeve 6 by means of integral injection molding or casting. The second connecting part is a hollow cylindrical second connecting tube 7, and the end of the second connecting tube 7 connected to the second sleeve 6 is also sealed. A second partition 8 is also fixedly connected inside the second sleeve 6 by means of integral injection molding or casting, dividing the interior of the second sleeve 6 into a second fixing cavity 9 and a second receiving cavity 10. The outer diameter of the second sleeve 6 is equal to the outer diameter of the first sleeve 1, and the wall thickness of the second sleeve 6 is equal to the wall thickness of the first sleeve 1. When connecting the first connector and the second connector, the first receiving cavity 5 and the second receiving cavity 10 are arranged opposite each other, so that the first receiving cavity 5 and the second receiving cavity 10 can form a sealed chamber.

[0047] Combination Figure 2 and Figure 6In this embodiment, the damping mechanism includes a damping seat 11 and a rotating disk 12, a friction disk 13, and a pressure adjusting nut 14 sleeved on the damping seat 11. A fixed disk 15, which is directly opposite the rotating disk 12, is fixedly connected to the damping seat 11 by integral casting. The friction disk 13 is located between the rotating disk 12 and the pressure adjusting nut 14. The adjusting nut is threadedly rotatably connected to the damping seat 11. There are multiple friction disks 13. In use, by rotating the adjusting nut, the squeezing force between the friction disks 13 and between the friction disk 13 and the rotating disk 12 can be adjusted, thereby adjusting the friction force when the rotating disk 12 rotates relative to the friction disk 13, and ultimately adjusting the damping strength of the damping mechanism.

[0048] When installing the damping mechanism, combine Figure 2 , Figure 3 and Figure 4 The first partition 3 has a first fixing hole 301, the second partition 8 has a second fixing hole 801, the fixing plate 15 has a first threaded hole 1501 that mates with the first fixing hole 301, and the rotating plate 12 has a second threaded hole 1201 that mates with the second fixing hole 801. During installation, the fixing plate 15 is located in the first receiving cavity 5, the rotating plate 12 is located in the second receiving cavity 10, one end of the damping seat 11 passes through the second partition 8 and extends into the second fixing cavity 9, and the pressure adjusting nut 14 is threadedly connected to the end of the damping seat 11 located in the second fixing cavity 9. Meanwhile, in this embodiment, a plurality of fixing protrusions 1502 are integrally formed on the outer wall of the fixed disk 15, and a first slot 302 is formed on the first partition 3 to engage with the fixed disk 15 and the fixing protrusions 1502. The depth of the first slot 302 is greater than or equal to the thickness of the fixed disk 15. A plurality of rotating protrusions 1202 are integrally formed on the outer wall of the rotating disk 12, and a second slot 802 is formed on the second partition 8 to engage with the rotating disk 12 and the rotating protrusions 1202. The depth of the second slot 802 is greater than or equal to the thickness of the rotating disk 12.

[0049] Combination Figure 1 , Figure 2 and Figure 5In the embodiment, the angle limiting unit is arranged between the first connecting member and the second connecting member to control the relative rotation angle between the first connecting member and the second connecting member, and the included angle between the first connecting member and the second connecting member is 60°-180° when the first connecting member and the second connecting member rotate. Specifically, the angle limiting unit includes a first limiting member and a second limiting member. The first limiting member is a first limiting seat 16 fixedly connected to the first partition plate 3 by an integral molding method and faces the first accommodating cavity 5. The second limiting member is a second limiting seat 17 fixedly connected to the second partition plate 8 by an integral molding method and faces the second accommodating cavity 10. The distance between the first limiting seat 16 and the second limiting seat 17 and the central axis of the relative rotation of the first sleeve 1 and the second sleeve 6 is equal. When the first sleeve 1 and the second sleeve 6 rotate, the first limiting seat 16 and the second limiting seat 17 can rotate to abut each other, thereby controlling the relative rotation angle of the first sleeve 1 and the second sleeve 6. In order to achieve the above-mentioned angle control range, the number of the first limiting seat 16 and the second limiting seat 17 is two in the embodiment, so as to limit the positions of the first sleeve 1 and the second sleeve 6 at 60° and 180°, respectively. In addition, the end of the first limiting seat 16 away from the first partition plate 3 protrudes out of the end of the first sleeve 1, and the part of the first limiting seat 16 protruding out of the first sleeve 1 forms a first rotation gap 18 with the first connecting cylinder 2 for the rotation of the second sleeve 6. Meanwhile, the end of the second limiting seat 17 away from the second partition plate 8 protrudes out of the end of the second sleeve 6, and the part of the second limiting seat 17 protruding out of the second sleeve 6 forms a second rotation gap 19 with the second connecting cylinder 7 for the rotation of the first sleeve 1. The first rotation gap 18 and the second rotation gap 19 limit the relative rotation between the first sleeve 1 and the second sleeve 6, thereby making the rotation of the first sleeve 1 and the second sleeve 6 more stable.

[0050] In the actual application, the damping mechanism is arranged to make the first connecting member and the second connecting member rotate while the damping action exists between the first connecting member and the second connecting member, so as to realize the hovering effect when other components are connected to the first connecting member and the second connecting member. In addition, the angle limiting unit is arranged in the embodiment to limit the relative rotation angle between the first connecting member and the second connecting member to 60°-180°, thereby improving the safety during use.

[0051] A hovering arm, such as Figure 7As shown, the damping rotation structure includes two rotating arms 20, and the two rotating arms 20 are connected to the first connecting cylinder 2 and the second connecting cylinder 7 respectively. Specifically, the rotating arm 20 is in a cylindrical shape, and in other embodiments, the rotating arm can be in a square shape or other shapes, which will not be described here. Taking the rotating arm 20 connected to the first connecting cylinder 2 as an example, one end of the rotating arm 20 is inserted into the first connecting cylinder 2, and the first connecting cylinder 2 is provided with a through hole 201, and the rotating arm 20 is provided with a threaded hole matched with the through hole 201. The number of through holes 201 can be one or more, and the rotating arm 20 and the first connecting cylinder 2 can be fixed by using a screw passing through the through hole 201 and the threaded hole.

[0052] A physiotherapy device includes the damping rotation structure or the hovering arm, and the number of damping structures or the number of hovering arms is multiple, such as Figure 8 As shown in the structure, two hovering arms can be provided, and the two hovering arms share one rotating arm 20, and the damping rotation structure is two. In use, the physiotherapy head in the physiotherapy device can be connected to one end of the rotating arm 20. For the convenience of angle adjustment of the physiotherapy head, the physiotherapy head can be installed after connecting a universal ball or other structure to the corresponding rotating arm 20, which will not be described here. In this scheme, by providing the damping rotation structure or the hovering arm on the physiotherapy device, the physiotherapy head can be adjusted to the appropriate position and suspended. When the damping effect of the damping mechanism is weakened or disappears, the physiotherapy head can also be prevented from falling down to contact the physiotherapy part of the user during use, so as to avoid the user from being scalded, and the rotating arm 20 connected to the physiotherapy instrument can also be prevented from rotating to a state with too small angle with another rotating arm 20, so as to avoid the physiotherapy instrument from colliding with and damaging other parts of the physiotherapy device, and improve the stability and safety of the physiotherapy device during use.

[0053] Embodiment two

[0054] The difference between embodiment two and embodiment one is that Figure 9 , Figure 10 and Figure 11As shown, in the embodiment, a first sealing end cover 21 is fixedly connected to one end of the first sleeve 1 close to the first fixed cavity 4, and a second sealing end cover 22 is fixedly connected to one end of the second sleeve 6 close to the second fixed cavity 9, the first sealing end cover 21 and the second sealing end cover 22 are used to seal the first fixed cavity 4 and the second fixed cavity 9 at both ends, specifically, a plurality of first studs 23 extending into the first fixed cavity 4 are integrally formed on the first partition plate 3, a plurality of second studs extending into the second fixed cavity 9 are integrally formed on the second partition plate 8, the first sealing end cover 21 is provided with first mounting holes matched with the first studs 23, and the second sealing end cover 22 is provided with second mounting holes 2201 matched with the second studs, and the installation can be fixed by screws; in addition, in order to facilitate the connection of the first sealing end cover 21 and the second sealing end cover 22, a matching step 101 is arranged at the end of the first sleeve 1 and the end of the second sleeve 6. In the embodiment, not only can the appearance of the entire damping rotation structure be more simple and regular, but also the adjustment nut and other structures are avoided from being exposed and adjusted at will, and the stability during use is improved.

[0055] The above is only an embodiment of the present application, and common technical solutions and / or properties in the scheme are not described in detail. It should be noted that, for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A damped rotational structure comprising a first connecting member and a second connecting member, characterized by: The first connecting piece and the second connecting piece are connected with a damping mechanism, the first connecting piece and the second connecting piece are connected with each other in rotation under the damping mechanism, and the first connecting piece and the second connecting piece are connected with an angle limiting unit for controlling the relative rotation angle between the first connecting piece and the second connecting piece.

2. A damped rotational structure according to claim 1, wherein: The angle limiting unit comprises a first limiting piece and a second limiting piece, the first limiting piece is connected to the first connecting piece, the second limiting piece is connected to the second connecting piece, and the distance between the first limiting piece and the second limiting piece and the central axis of the relative rotation of the first connecting piece and the second connecting piece is equal.

3. A damped rotational structure according to claim 2, wherein: The first connecting piece comprises a first sleeve and a first connecting part fixedly connected to one side of the first sleeve, a first partition plate is fixedly connected in the first sleeve, and the first partition plate divides the first sleeve into a first fixed cavity and a first containing cavity; the second connecting piece comprises a second sleeve and a second connecting part fixedly connected to one side of the second sleeve, a second partition plate is fixedly connected in the second sleeve, and the second partition plate divides the second sleeve into a second fixed cavity and a second containing cavity; the first containing cavity and the second containing cavity are oppositely arranged, the first limiting piece is fixedly connected to one side of the first containing cavity on the first partition plate, the second limiting piece is fixedly connected to one side of the second containing cavity on the second partition plate, and the damping mechanism is connected with the first partition plate and the second partition plate.

4. A damped rotational structure according to claim 3, wherein: The first connecting part comprises a first connecting cylinder, the second connecting part comprises a second connecting cylinder, the rotation plane of the first connecting cylinder and the rotation plane of the second connecting cylinder are coplanar; one end of the first limiting piece away from the first partition plate protrudes from the end of the first sleeve, a first rotation gap for the rotation of the second sleeve is formed between the first limiting piece and the first connecting cylinder, one end of the second limiting piece away from the second partition plate protrudes from the end of the second sleeve, and a second rotation gap for the rotation of the first sleeve is formed between the second limiting piece and the second connecting cylinder.

5. A damped rotational structure according to claim 3, wherein: The damping mechanism comprises a damping seat, a rotating disc, a friction disc and a pressure adjusting nut sleeved on the damping seat, a fixed disc oppositely arranged with the rotating disc is fixedly connected on the damping seat; the first partition plate is provided with a first fixed hole, the second partition plate is provided with a second fixed hole, the fixed disc is provided with a first threaded hole matched with the first fixed hole, and the rotating disc is provided with a second threaded hole matched with the second fixed hole.

6. A damped rotational structure according to claim 5, wherein: The fixed disc is located in the first containing cavity, the rotating disc is located in the second containing cavity, one end of the damping seat extends to the second fixed cavity through the second partition plate, and the pressure adjusting nut is connected to the end of the damping seat in the second fixed cavity; a fixed protrusion is arranged on the outer wall of the fixed disc, the first partition plate is provided with a first clamping groove matched with the fixed disc and the fixed protrusion; a rotating protrusion is arranged on the outer wall of the rotating disc, and the second partition plate is provided with a second clamping groove matched with the rotating disc and the rotating protrusion.

7. A damped rotational structure according to claim 3, wherein: A first sealing end cover is fixedly connected to one end of the first sleeve close to the first fixed cavity, and a second sealing end cover is fixedly connected to one end of the second sleeve close to the second fixed cavity.

8. A damped rotational structure according to claim 1, wherein: Under the limitation of the angle limiting unit, the included angle between the first connecting piece and the second connecting piece is 60°-180° when rotating.

9. A hovering arm comprising two rotating arms, characterized in that: Also included is a damped rotating structure as claimed in any one of claims 1-8, wherein the two rotating arms are connected to the first and second connecting members, respectively.

10. A physiotherapy apparatus characterised by: Also included is a damped rotating structure as claimed in any one of claims 1-8, or a hovering arm as claimed in claim 9.

Images