Angle-adjustable rack and massage machine

Abstract

The invention relates to an angle-adjustable rack. The angle-adjustable rack comprises a first bearing frame and a second bearing frame, a first tooth-shaped guide rail is fixedly connected to the first bearing frame, and a second tooth-shaped guide rail is fixedly connected to the second bearing frame. The second bearing frame can rotate front and back relative to the first bearing frame. A guide rail maintaining mechanism is arranged at the switching position of the first bearing frame and the second bearing frame. The guide rail maintaining mechanism comprises a first tooth-shaped component and a second tooth-shaped component which are meshed with each other, the first tooth-shaped component is connected to the first bearing frame, and the second tooth-shaped component is connected to the second bearing frame; the second bearing frame drives the second tooth-shaped component to rotate relative to the first tooth-shaped component when rotating. In the left-right direction, the first tooth-shaped component or the second tooth-shaped component is provided with tooth grooves right opposite to the tooth parts of the first tooth-shaped guide rail and the second tooth-shaped guide rail. Compared with the prior art, the rack disclosed by the invention is relatively simple in structure. The invention further provides a massage machine.

Description

[0001] This invention is a divisional application based on the original application. The application number of the original application is "CN201910963494.6", the application date is "October 11, 2019", and the name of the invention is "A frame and massage machine with adjustable angle". Technical Field

[0002] The invention relates to massage equipment technology, in particular to an angle-adjustable frame and a massage machine. Background Art

[0003] Patent application CN201310735663.3 discloses a full body massager, which uses a transition rail to match the back rail and the seat rail, so that the massage movement can move between the back rail and the seat rail. The technical solution of this patent application is relatively complex, the production is difficult, and it is difficult to ensure long-term stable operation. In response to the problems existing in the aforementioned patent application, patent applications such as CN201510078338.3 provide other solutions, but the overall solution is also relatively complex. In view of this, this application is specially proposed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a frame with adjustable angle to solve the problem that the frame structure of the existing massage machine is relatively complicated.

[0005] In order to solve the above technical problems, the present invention provides an angle-adjustable rack, comprising: a first support bracket and a second support bracket; a first toothed guide rail is fixedly connected to the first support bracket, and a second toothed guide rail is fixedly connected to the second support bracket; the second support bracket can rotate forward and backward relative to the first support bracket to adjust the user's posture by changing the angle between the two; a guide rail holding mechanism is provided at the transition position of the first support bracket and the second support bracket, and the guide rail holding mechanism is used to hold the first toothed guide rail and the second support bracket when the second support bracket rotates relative to the first support bracket. The second toothed guide rail is always in a docking state so that the travel gear of the massage movement can switch between the first toothed guide rail and the second toothed guide rail; the guide rail holding mechanism includes a first toothed component and a second toothed component that are meshed with each other, the first toothed component is connected to the first support bracket, and the second toothed component is connected to the second support bracket; when the second support bracket rotates, it drives the second toothed component to rotate relative to the first toothed component; in the left and right directions, the first toothed component or the second toothed component has a tooth groove that is directly opposite to the tooth portion of the first toothed guide rail and the second toothed guide rail.

[0006] Preferably, the first toothed component has tooth grooves arranged opposite to the tooth portions of the first toothed guide rail and the second toothed guide rail, and the second toothed component has tooth portions opposite to the tooth portions of the second toothed guide rail; or the second toothed component has tooth grooves arranged opposite to the tooth portions of the first toothed guide rail and the second toothed guide rail, and the first toothed component has tooth portions opposite to the tooth portions of the first toothed guide rail.

[0007] Preferably, one of the first toothed member and the second toothed member is a U-shaped structure, and the other one is correspondingly located in the U-shaped structure; a connecting piece is connected to one of the first toothed member and the second toothed member cooperates with the connecting piece to clamp the other one.

[0008] Preferably, the frame includes a base frame, and the first supporting bracket is fixed to or hinged to the base frame.

[0009] Preferably, the frame includes a base frame, the base frame has an articulated seat, the first supporting bracket has an articulated shaft rotatably mounted on the articulated seat; the first toothed member is mounted on the articulated shaft; the first toothed member is sleeved on the articulated shaft, and is detached from the articulated shaft by moving in the left and right directions relative to the articulated shaft; the articulated seat is sleeved on the articulated shaft, and is located on the side of the first toothed member in the left and right directions to limit the movement of the first toothed member relative to the second toothed member in the left and right directions.

[0010] Preferably, the first supporting bracket is hinged on the base frame; a first driving mechanism for driving the first supporting bracket to rotate relative to the base frame is provided between the base frame and the first supporting bracket, and a second driving mechanism for driving the second supporting bracket to rotate relative to the first supporting bracket is provided between the first supporting bracket and the second supporting bracket.

[0011] Preferably, the first toothed component and the second toothed component have: a rotation allowing tooth portion allowing the two to rotate relative to each other and two rotation locking tooth portions restricting the two to rotate relative to each other, and the two rotation locking tooth portions are circumferentially arranged on both sides of the rotation allowing tooth portion.

[0012] Preferably, a limiting mechanism is arranged on the first supporting bracket and / or the second supporting bracket, and the limiting mechanism is used to apply pressure to the guide wheel when the guide wheel of the massage movement passes through the interval gap on the upper side of the transition position between the first supporting bracket and the second supporting bracket; the limiting mechanism includes a limiting member, and the limiting member has a U-shaped limiting portion, and the U-shaped limiting portion is located in the interval gap on the upper side of the transition position between the first supporting bracket and the second supporting bracket.

[0013] Preferably, one of the first support bracket and the second support bracket has an engaging portion on its side wall in the left-right direction, and the other has an engaging groove on its side wall in the left-right direction; when the second support bracket rotates relative to the first support bracket, the engaging portion slides correspondingly in the engaging groove.

[0014] The present application further provides a massage machine, comprising: a frame and a massage movement; the massage movement has a running gear and a guide wheel; the frame is the frame described in any of the above items.

[0015] By adopting the above technical solution, the present invention can achieve the following technical effects: 1. The present application uses a guide rail holding mechanism to keep the second support bracket always in a docking state relative to the first support bracket, thereby ensuring that after the second support bracket rotates relative to the first support bracket, the travel gear can travel and switch between the first toothed guide rail and the second toothed guide rail; compared with CN201310735663.3, which requires a trigger to be provided on the massage movement to cooperate with the transition guide rail, the solution of the present application does not require a trigger on the massage movement, and at the same time avoids the problem of the existing technology frame structure being too complicated; 2. When the hinge seat is located at the side of the first toothed member in the left-right direction, in addition to supporting the first support bracket, it also plays a role in limiting the movement of the first toothed member relative to the second toothed member in the left-right direction. That is, the hinge seat has two functions, which can make the overall structure of the frame more compact. 3. The limiting member of the limiting mechanism can exert pressure on the guide wheel to prevent the guide wheel from shaking when it moves to the gap; 4. When the second support bracket rotates relative to the first support bracket, the engaging portion slides in the engaging groove accordingly, ensuring that when the guide wheel moves to the transfer position of the two support brackets, the side of the guide wheel can always be pressed against the engaging portion. Compared with the case where the engaging portion and the engaging groove are not provided, the shaking of the guide wheel when it moves to the transfer position can be avoided; 5. The frame of the present application has the advantage of a simple structure, and the frame can be applied to conventional home massage chairs, SPA massage chairs and other massage machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a massage machine according to an embodiment is shown; Figure 2 A first exploded view of a massage machine according to an embodiment is shown; Figure 3 Draws Figure 2 A magnified view of region A; Figure 4 A second exploded view of a massage machine according to an embodiment is shown; Figure 5 A state change diagram of a massage machine according to an embodiment is shown; Figure 6 A schematic diagram of the massage machine is shown when the running gear of the massage movement moves to the transition position between the first toothed guide rail and the second toothed guide rail; Figure 7A schematic diagram showing the guide rail holding mechanism being separated from the first support bracket and the second support bracket is depicted; Figure 8 A schematic diagram showing the second support bracket rotating relative to the first support bracket is shown; Fig. 9 A schematic diagram is shown when the second toothed guide rail rotates relative to the first toothed guide rail; Fig.10 A schematic diagram showing the cooperation between the first toothed component and the second toothed component is depicted; Fig.11 A schematic diagram of a massage machine according to a second embodiment is shown; Fig.12 A schematic diagram is shown when the running gear and the guide wheel of the massage movement move to the transfer position of the first support bracket and the second support bracket of the second embodiment; Fig.13 A diagram showing a state change of the second support bracket of the frame of the massage machine of the second embodiment moving relative to the first support bracket; Fig.14 and Fig.15 Schematic diagrams of the first support bracket, the second support bracket, and the guide rail holding mechanism of the third embodiment after being coordinated are respectively depicted from different viewing angles; Fig.16 An exploded view of the first support bracket, the second support bracket, and the guide rail holding mechanism of the third embodiment is shown; Fig.17 A schematic diagram showing the cooperation between the first support bracket, the second support bracket, the guide rail holding mechanism and the base frame of the third embodiment is shown; Fig.18 A schematic diagram showing the cooperation between the first support bracket, the second support bracket, the guide rail holding mechanism and another base frame of the third embodiment; Fig.19 A schematic diagram showing the cooperation of the first support bracket, the second support bracket and the guide rail holding mechanism of the fourth embodiment is shown; Figure 20 to Figure 22 The schematic diagrams of different massage machines are respectively shown. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0018] Combination Figure 1 In the first embodiment, the massage machine is a massage chair, which comprises: a frame and a massage movement 4. The frame comprises: a bottom frame 1, a first support frame 2 as a seat frame, a second support frame 3 as a back frame, two first toothed guide rails 5, two second toothed guide rails 6, a first driving mechanism 7, a second driving mechanism 8 and two guide rail holding mechanisms 9.

[0019] Combination Figure 1 The bottom frame 1 comprises: a ground contact support portion supported on the ground and two side support portions arranged on the left and right sides of the ground contact support portion. The side support portions on both sides of the bottom frame 1 have hinge seats 1A.

[0020] Combination Figure 1 , Figure 3 and Figure 4 The first support bracket 2 includes: two seat rail configuration parts arranged on the left and right sides, and a front connection part connecting the front sides of the two seat rails. The two seat rail configuration parts of the first support bracket 2 have a hinge shaft 2A extending outward in the left and right directions. The hinge shaft 2A is hinged on the hinge seat 1A. In this embodiment, combined with Figure 3 The outer periphery of the hinge shaft 2A has: oppositely arranged arcuate surfaces and oppositely arranged planes (i.e., two opposite D-shaped structures). The hinge seat 1A has a circular hinge hole adapted to the arcuate surface, and then the first support frame 2 is hinged to the base frame 1 by rotating the hinge shaft 2A relative to the hinge seat 1A (i.e., it can rotate relative to the base frame 1). Figure 7 The first supporting bracket 2 has a fixing part 2D, and the hinge shaft 2A passes through the fixing part 2D, the first toothed member 9A and the circular hinge hole outward along its axial direction, and the fixing part 2D is fixed on the seat guide rail configuration part, and the fixing part 2D can be fixed on the seat guide rail configuration part by welding.

[0021] Combination Figure 1 , Figure 3 and Figure 4 The second support bracket 3 includes: two back rail configuration parts arranged on the left and right sides, and a rear connection part connecting the rear sides of the two seat rails. The rear sides of the two back rail configuration parts are connected to the connecting ears for connecting with the second driving mechanism 8. The left and right sides of the second support bracket 3 are respectively connected to the hinge shaft 2A through a rail holding mechanism 9, which will be further described below. Figure 5 The second support bracket 3 is connected to the first support bracket 2 so that the second support bracket 3 can rotate relative to the first support bracket 2 to adjust the user's posture by changing the angle between the two.

[0022] Combination Figure 1The massage movement 4 has a running gear 4A and two guide wheels 4B on the left and right sides. The running gear 4A is located on the running shaft at the lower side of the massage movement 4, a group of guide wheels 4B are located on the running shaft at the upper side of the massage movement 4, a group of guide wheels 4B are located on the running shaft at the lower side of the massage movement 4, and the guide wheels on the running shaft at the lower side are located outside the running gear 4A. The massage movement 4 can be a common massage movement with kneading, knocking and other functions, or other massage movements.

[0023] Combination Figure 1 , Figure 3 and Figure 4 The first toothed guide rails 5 are fixedly connected to the seat guide rail configuration parts on both sides of the first support bracket 2, and the second toothed guide rails 6 are fixedly connected to the back guide rail configuration parts on both sides of the second support bracket 3. The first toothed guide rails 5 on both sides and the second toothed guide rails 6 on both sides are connected correspondingly, and the combination Figure 8 In this embodiment, the first toothed guide rail 5 has a first connecting portion 5A, and the second toothed guide rail 6 has a second connecting portion 6A. The first connecting portion 5A and the second connecting portion 6A located on the same side are adjacently arranged in the left-right direction of the frame. It is easy to understand that the specific way in which the first toothed guide rail 5 and the second toothed guide rail 6 located on the same side are connected is not limited to this. The connecting portions of the two are, for example, a "convex"-shaped structure and a "concave"-shaped structure that fit together.

[0024] Combination Figure 1 , Figure 3 , Figure 4 and Figure 5 The first driving mechanism 7 is connected between the base frame 1 and the first supporting bracket 2 to drive the first supporting bracket 2 to rotate relative to the base frame 1. The second driving mechanism 8 is connected between the first supporting bracket 2 and the second supporting bracket 3 to drive the second supporting bracket 3 to rotate relative to the first supporting bracket 2. The first driving mechanism 7 and the second driving mechanism 8 are telescopic push rods.

[0025] Combination Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 The guide rail holding mechanism 9 is located at the transition position between the first support bracket 2 and the second support bracket 3, wherein Figure 7 Some components are omitted. Figure 8 and Fig. 9 The guide rail holding mechanism 9 is used to keep the second support bracket 3 always in a docking state when it rotates relative to the first support bracket 2, so that the travel gear 4A of the massage movement 4 can travel and switch between the first toothed guide rail 5 and the second toothed guide rail 6.

[0026] The guide rail holding mechanism 9 comprises: a first toothed member 9A, a second toothed member 9B, a connecting member 9C, a first wear-resistant member 9D, a second wear-resistant member 9E, a gasket 9F and a fastening screw 9G. The first toothed member 9A and the second toothed member 9B are meshed with each other. The second toothed member 9B is a U-shaped structure, which is connected to the second support bracket 3 and rotates with the second support bracket 3. The first toothed member 9A is located in the second toothed member 9B of the U-shaped structure, and the first toothed member 9A is connected to the first support bracket 2 and rotates with the first support bracket 2. In this embodiment, the first toothed member 9A is sleeved on the outer periphery of the articulated shaft 2A (i.e., the rotation axis L of the first toothed member 9A also extends in the left-right direction), and has a mating surface corresponding to the arc surface and the plane of the outer periphery of the articulated shaft 2A. In the above manner, the first toothed member 9A itself does not rotate relative to the articulated shaft 2A, but can rotate with it. At the same time, the first toothed member 9A can be separated from the articulated shaft 2A by moving relative to the articulated shaft 2A in the left-right direction. The connecting member 9C is connected to the second toothed member 9B, and cooperates with it to clamp the first toothed member 9A. The connecting member 9C plays a role in limiting the relative movement of the first toothed member 9A and the second toothed member 9B in the radial direction, so that the two toothed members remain engaged. The first wear-resistant member 9D and the second wear-resistant member 9E are respectively in the shape of a round pancake, which can be rotatably sleeved on the articulated shaft 2A, and are axially arranged on both sides of the first toothed member 9A. The gasket 9F is sleeved on the articulated shaft 2A, and is axially located outside the articulated seat 1A. The fastening screw 9G is sleeved on the hinge shaft 2A and is axially located outside the gasket 9F. Through the above method, the connection between the base frame 1, the first support bracket 2, and the second support bracket 3 is completed.

[0027] Combination Figure 3 , Fig. 9 and Fig.10 By the above connection method, the first toothed member 9A and the second toothed member 9B are kept in mesh with each other and are restricted from moving in the direction of the rotation axis L and in the radial direction. Fig. 9 and Fig.10 In the left-right direction (the direction of the rotation axis L), the first toothed member 9A has tooth grooves directly facing the tooth portions of the first toothed guide rail 5 and the second toothed guide rail 6, and the second toothed member 9B has tooth portions directly facing the tooth portions of the second toothed guide rail 6. The aforementioned "directly facing" setting method makes the tooth profiles of the first toothed member 9A and the second toothed member 9B correspond to the toothed guide rails, which can ensure that the running gear 4A can still smoothly pass through the intersection of the two toothed guide rails after the two toothed members rotate relative to each other. Fig. 9From a viewing angle, due to the aforementioned facing relationship, the first toothed component 9A and the first toothed guide rail 5, 6 are in a "virtual meshing" state, and the "virtual meshing" state satisfies the requirement that when the traveling gear 4A travels to the intersection of the first toothed guide rail 5 and the second toothed guide rail 6, the traveling gear 4A and the first toothed guide rail 5, 6 are in a "real meshing" state. In this embodiment, there are provided between the first toothed component 9A and the second toothed component 9B: a rotation allowing tooth portion K1 that allows the two to rotate relative to each other, and two locking tooth portions K2 that restrict the two from rotating relative to each other. The two rotation locking tooth portions K2 are circumferentially arranged on both sides of the rotation allowing tooth portion K1. Figure 6 , Figure 8 and Fig. 9 When the second support bracket 3 rotates relative to the first support bracket 2 within a preset range, the first toothed guide rail 5 and the second toothed guide rail 6 remain connected to allow the travel gear 4B to pass through. Fig.10 From the perspective of FIG. 1 , when the first toothed member 9A does not rotate with the first support bracket 2, and the second toothed member 9B rotates clockwise or counterclockwise with the second support bracket 3, the range of rotation thereof is limited by the rotation locking tooth portion K2. In other embodiments, the relative rotation range of the two toothed members can be limited by additionally providing a pin member and an arc-shaped groove for the pin member to slide.

[0028] Combination Figure 1 In the first embodiment, the first support bracket 2 has a fitting portion 2C located at the side, and the second support bracket 3 has a fitting groove 3A located at the side. When the second support bracket 3 rotates relative to the first support bracket 2, the fitting portion 2C slides in the fitting groove 3A accordingly. When the massage movement is in normal operation, the side of the guide wheel 4B on its side is against the side wall 2B of the first support bracket 2 or the side wall 3B of the second support bracket 3, and when the guide wheel 4B of the massage movement moves to the transfer position between the first support bracket 2 and the second support bracket 3, the side of the guide wheel 4B can still remain against the fitting portion 2C, so as to avoid the side of the guide wheel 4B losing support when it moves to the transfer position and causing left and right shaking. It should be understood that the positions of the fitting portion and the fitting groove can be reversed.

[0029] Combination Figures 11 to 13 In the second embodiment, a limiting mechanism 10 is disposed on the first support bracket 2 and the second support bracket 3. The limiting mechanism 10 is used to apply pressure to the guide wheel 4B when the guide wheel 4B of the massage movement passes through the gap on the upper side of the transition position of the first support bracket 2 and the second support bracket 3. The limiting mechanism 10 includes a limiting member 10A, and the limiting member 10A has a U-shaped limiting portion that applies pressure to the guide wheel 4B. The limiting member 10A is installed on the first support bracket 2 and the second support bracket 3 through the installation portion 10B, and the notch of the U-shaped limiting portion faces upward. Fig.13The U-shaped limiting part of the limiting member 10A is located at the gap on the upper side of the transition position of the first supporting bracket 2 and the second supporting bracket 3. The limiting member 10A applies pressure to the guide wheel 4B when the guide wheel 4B of the massage movement passes through the gap to prevent the guide wheel 4B from shaking when passing through the gap. At the same time, the limiting member 10A can be deformed by the action of the first supporting bracket 2 and the second supporting bracket 3 when there is an abnormality in the relative rotation and the second supporting bracket 3 is too close, so as to buffer the force when the first supporting bracket 2 and the second supporting bracket 3 are abnormally close. Fig.13 In the case where both the first support bracket 2 and the second support bracket 3 are provided with a limiting mechanism, the U-shaped limiting parts of the two limiting mechanisms are arranged adjacent to each other in the left-right direction. When the second support bracket 3 rotates relative to the first support bracket 2 to expand the gap between the upper sides of the two, the two U-shaped limiting parts cooperate to ensure that the guide wheel 4B can be continuously pressed to prevent the guide wheel 4B from shaking up and down. Through the cooperation of the interlocking groove 3A and the interlocking part 2C and the limiting of the limiting member 10A, the guide wheel 4B can pass through the transition position of the two support brackets more stably. Other features not mentioned in this embodiment can be the same as those in the previous embodiment and will not be repeated.

[0030] The connection method between the guide rail holding mechanism 9 and the first support bracket 2 and the second support bracket 3 is not limited to the above-mentioned embodiment. Figures 14 to 16 In another embodiment, the side of the first support bracket may have a sleeve shaft, whose outer cross-section is square, and the first toothed member 9A may be fixed to the sleeve shaft by interference fit or screw fastening, and the second toothed member 9B is connected to the second support bracket 3 and cooperates with the connecting member 9C to keep the two toothed members meshed. It is easy to understand that the guide rail holding mechanism 9 may also have other deformation designs, which will not be repeated.

[0031] Combination Fig.17 , Fig.16 The structure can also be applied to the massage chair structure, and the application method can be different from Figure 1 way, such as Fig.17 The first supporting frame 2 is also a seat frame, the second supporting frame 3 is also a back frame, and the first supporting frame 2 is fixedly connected to the base frame 1. Fig.17 The driving structure for driving the second support bracket 3 to rotate is omitted, and Fig.17 Only part of the structure of the rack is shown.

[0032] Combination Fig.18 , Fig.16 The structure can also be applied to the structure of a spa massage chair, which includes a base and a Fig.16 The frame has a cleaning tank on the front side of the base and a massage movement ( Fig.18The first support frame 2 is fixedly connected to the base, and the activity space S1 corresponds to the position of the first support frame 2. The massage movement can move from the second support frame 3 to the activity space to massage the user's buttocks and thighs when the user sits in the spa massage.

[0033] Combination Fig.19 In another embodiment, the first toothed member 9A is a U-shaped structure connected to the first support bracket 2, the second toothed member 9B is located inside the first toothed member 9A of the U-shaped structure, and the connecting member 9C is connected to the first toothed member 9A. Fig.19 In the embodiment, in the left-right direction, the second toothed member 9B has a first toothed guide rail and a second toothed guide rail ( Fig.19 The first toothed member 9A has a toothed portion facing the toothed portion of the first toothed guide rail. In the first embodiment described above, when the second support bracket 3 supports the user and rotates, the force is mainly borne by the connecting member 9C. The force-bearing surface of the connecting member 9C is easily worn. Fig.19 In the embodiment, the force is mainly borne by the second toothed member 9B, and the second toothed member 9B is not easily worn.

[0034] Based on the above description, the basic principle of the technical concept of the present application is that: when the second support bracket rotates relative to the first support bracket, the first toothed guide rail and the second toothed guide rail rotate relative to each other; the positions of the first toothed guide rail and the second toothed guide rail before and after the relative rotation of the two must satisfy that the traveling gear 4B can mesh with the two toothed guide rails when the two rails move to the intersection position; in order to ensure the above conditions, the first toothed component or the second toothed component is arranged in the left and right directions to have a tooth groove that is directly opposite to the tooth portion of the first toothed guide rail and the second toothed guide rail. The "toothed component with the tooth groove" can be regarded as "the traveling gear that moves to the transition position of the two toothed guide rails" and is translated in the left and right directions. On this basis, as long as it is ensured that "when the two support brackets rotate relative to each other, the two toothed components maintain meshing and rotate relative to each other synchronously", it can be ensured that the traveling gear 4B can pass through the transition position of the two toothed guide rails. Based on the above principle, it is easy to understand that the matching method of the two toothed components of the present application is not limited to the above embodiment.

[0035] The design concept of the frame of this application can also be applied to other massage machines, and the support frame can be adjusted accordingly according to product needs, such as Fig. 20 In a massage chair, the massage chair includes: a base frame M1, a seat frame M2, a back frame M3, and a head frame M4. The back frame M3 can rotate relative to the seat frame M2, and a first guide rail holding mechanism N1 is provided therebetween. The head frame M4 can rotate relative to the back frame M3, and a second guide rail holding mechanism N2 is provided therebetween. Fig. 20 Different, combined Fig.21It is also possible to make only the head frame M4 rotatable relative to the back frame M3. It should be understood that the bottom frame is not a necessary component of the massage machine frame. Fig. 22 In one embodiment, the frame of the massage machine includes: a seat frame M2 and a back frame M3, which are connected by a first guide rail holding mechanism N1. Fig. 22 The massage machine is similar to a conventional cushion-shaped massage machine, and the relative positions of the two support brackets can be adjusted according to the angle of the support surface. Figure 20 to Figure 22 The massage movement structure is omitted in the illustrations.

[0036] It should be noted that the design scheme of the interlocking groove, interlocking portion and limiting mechanism of the present application does not need to be used in conjunction with the guide rail retaining mechanism. Both can also be applied to the schemes such as patent application CN201710363253.9 and will not be repeated here.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rack with adjustable angle, comprising: A first support bracket (2) and a second support bracket (3); a first toothed guide rail (5) is fixedly connected to the first support bracket (2), and a second toothed guide rail (6) is fixedly connected to the second support bracket (3); the second support bracket (3) can rotate forward and backward relative to the first support bracket (2) to adjust the user's posture by changing the angle between the two; characterized in that: A guide rail holding mechanism (9) is provided at the transition position between the first support bracket (2) and the second support bracket (3), and the guide rail holding mechanism (9) is used to keep the first toothed guide rail (5) and the second toothed guide rail (6) always in a docking state when the second support bracket (3) rotates relative to the first support bracket (2), so as to allow the running gear (4A) of the massage movement to switch between the first toothed guide rail (5) and the second toothed guide rail (6); The guide rail holding mechanism (9) comprises a first toothed component (9A) and a second toothed component (9B) meshing with each other, wherein the first toothed component (9A) is connected to a first support bracket (2), and the second toothed component (9B) is connected to a second support bracket (3); when the second support bracket (3) rotates, the second toothed component (9B) is driven to rotate relative to the first toothed component (9A); in the left-right direction, the first toothed component (9A) or the second toothed component (9B) has a tooth groove directly facing the toothed portion of the first toothed guide rail (5) and the second toothed guide rail (6); A limiting mechanism (10) is arranged on the first supporting frame (2) and / or the second supporting frame (3), and the limiting mechanism (10) is used to apply pressure to the guide wheel (4B) when the guide wheel (4B) of the massage movement passes through the gap on the upper side of the transition position between the first supporting frame (2) and the second supporting frame (3).

2. The angle-adjustable rack according to claim 1, characterized in that: The first toothed component (9A) has tooth grooves arranged opposite to the tooth portions of the first toothed guide rail (5) and the second toothed guide rail (6), and the second toothed component (9B) has tooth portions arranged opposite to the tooth portions of the second toothed guide rail (6); or the second toothed component (9B) has tooth grooves arranged opposite to the tooth portions of the first toothed guide rail (5) and the second toothed guide rail (6), and the first toothed component (9A) has tooth portions arranged opposite to the tooth portions of the first toothed guide rail (5).

3. The angle-adjustable rack according to claim 1, characterized in that: One of the first toothed component (9A) and the second toothed component (9B) is a U-shaped structure, and the other is correspondingly located in the U-shaped structure; a connecting piece (9C) is connected to one of them, and one of them cooperates with the connecting piece (9C) to clamp the other.

4. The angle-adjustable rack according to any one of claims 1 to 3, characterized in that: The frame comprises a base frame (1), and the first supporting frame (2) is fixed on or hinged to the base frame (1).

5. The angle-adjustable rack according to claim 2, characterized in that: The frame includes a base frame (1), the base frame (1) has an articulated seat (1A), the first supporting frame (2) has an articulated shaft (2A) rotatably mounted on the articulated seat (1A); the first toothed member (9A) is mounted on the articulated shaft (2A); the first toothed member (9A) is sleeved on the articulated shaft (2A) and is detached from the articulated shaft (2A) by moving relative to the articulated shaft (2A) in the left-right direction; the articulated seat (1A) is sleeved on the articulated shaft (2A) and is located on the side of the first toothed member (9A) in the left-right direction to limit the movement of the first toothed member (9A) relative to the second toothed member (9B) in the left-right direction.

6. The angle-adjustable rack according to claim 4, characterized in that: The first support frame (2) is hinged on the base frame (1); a first driving mechanism (7) is provided between the base frame (1) and the first support frame (2) for driving the first support frame (2) to rotate relative to the base frame (1); and a second driving mechanism (8) is provided between the first support frame (2) and the second support frame (3) for driving the second support frame (3) to rotate relative to the first support frame (2).

7. The angle-adjustable rack according to any one of claims 1 to 3, characterized in that: The first toothed component (9A) and the second toothed component (9B) are provided with: a rotation allowing tooth portion (K1) that allows the two to rotate relative to each other, and two rotation locking tooth portions (K2) that restrict the two to rotate relative to each other, and the two rotation locking tooth portions (K2) are circumferentially arranged on both sides of the rotation allowing tooth portion (K1).

8. The angle-adjustable rack according to any one of claims 1 to 3, characterized in that: The limiting mechanism (10) comprises a limiting member (10A), wherein the limiting member (10A) has a U-shaped limiting portion, wherein the U-shaped limiting portion is located in the interval gap on the upper side of the transition position between the first supporting bracket (2) and the second supporting bracket (3).

9. The angle-adjustable rack according to claim 1, characterized in that: The first toothed guide rail (5) has a first connecting portion (5A), and the second toothed guide rail (6) has a second connecting portion (6A). The first connecting portion (5A) and the second connecting portion (6A) located on the same side are arranged adjacent to each other in the left-right direction of the frame, or are in a "convex" shaped structure or a "concave" shaped structure that are interlocked.

10. A massage machine, comprising: a frame and a massage movement; the massage movement has a running gear (4A) and a guide wheel (4B); characterized in that: The rack is the rack according to any one of claims 1 to 9.

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