Massage chair backrest guide rail and massage chair frame

Abstract

The utility model relates to the technical field of massage chairs, and particularly discloses a massage chair backrest guide rail and a massage chair frame, the massage chair backrest guide rail comprises two U-shaped guide rails located on the two sides of a massage machine core, openings of the U-shaped guide rails face the massage machine core, connecting parts are arranged on the two sides of the massage machine core, and the two connecting parts are correspondingly inserted into the two U-shaped guide rails through the openings; a guide rail installation opening is formed in the side face of the U-shaped guide rail, and the connecting part is installed in the U-shaped guide rail through the guide rail installation opening. The massage machine core can be installed from the side face of the guide rail, the disassembly and assembly difficulty can be greatly reduced, and the overall strength of the massage chair frame can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of massage chairs, and more particularly, to a backrest guide rail of a massage chair and a massage chair frame. Background Art

[0002] The existing assembly solution of the backrest guide rail of a massage chair and the massage mechanism is to install the massage mechanism from the top of the backrest guide rail. When installing the massage mechanism from the top of the massage chair, some structures of the top backrest need to be disassembled to expose an opening. Therefore, the connecting cross beam at the top of the massage chair frame in the existing technology needs to be set in a detachable manner and cannot be welded and fixed, resulting in a reduction in the overall strength of the massage chair frame. In addition, during the use of the massage chair, when the massage mechanism fails and needs to be repaired, the blocking structure at the top of the massage chair frame needs to be disassembled to remove the massage mechanism, making the repair work difficult and time-consuming and laborious. Summary of the Utility Model

[0003] The purpose of the present application is to provide a backrest guide rail of a massage chair and a massage chair frame, which can install the massage mechanism from the side of the guide rail, not only can greatly reduce the disassembly and assembly difficulty, but also is beneficial to improving the overall strength of the massage chair frame.

[0004] The embodiments of the present application are implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides a backrest guide rail of a massage chair, which is arranged in cooperation with the massage mechanism of the massage chair. The backrest guide rail of the massage chair includes two U-shaped guide rails located on both sides of the massage mechanism, the openings of the U-shaped guide rails face the massage mechanism, connection parts are arranged on both sides of the massage mechanism, and the two connection parts are inserted into the two U-shaped guide rails through the corresponding openings; a guide rail installation opening is formed on the side surface of the U-shaped guide rail, and the connection part is installed into the U-shaped guide rail through the guide rail installation opening.

[0006] As an optional implementation manner, it further includes a guide rail blocking member arranged on the U-shaped guide rail for blocking the guide rail installation opening, and the guide rail blocking member is detachably connected to the U-shaped guide rail.

[0007] As an optional implementation manner, the U-shaped guide rail is provided with card slots on both sides of the guide rail installation opening, and the extending direction of the card slots is perpendicular to the path of the U-shaped guide rail; both sides of the guide rail blocking member are provided with insertion parts corresponding to the card slots for insertion.

[0008] As an optional implementation manner, one end of the U-shaped guide rail has an abutting surface, a connecting ear is arranged on the side of the guide rail blocking member close to the opening of the U-shaped guide rail, the insertion part is inserted into the card slot, and the connecting ear is attached to the abutting surface.

[0009] As an alternative embodiment, connection holes are formed in the abutting surface, and bolt connectors connected to the connection holes are provided on the connection ears, so as to form a locking force between the connection ears and the abutting surface.

[0010] As an alternative embodiment, the guide rail mounting opening is formed in the side of the U-shaped guide rail close to the user; further included is a blow-molded backrest provided on the side of the U-shaped guide rail close to the user, and a backrest mounting opening is formed in the blow-molded backrest at a position corresponding to the guide rail mounting opening; along the arrangement direction of the backrest mounting opening and the guide rail mounting opening, the projection edge of the guide rail mounting opening is located within the projection plane of the backrest mounting opening.

[0011] As an alternative embodiment, a backrest blocking member for blocking the backrest mounting opening is further provided on the blow-molded backrest, and the backrest blocking member is detachably connected to the blow-molded backrest.

[0012] As an alternative embodiment, a sunken platform recessed toward the U-shaped guide rail is provided on the blow-molded backrest, the backrest blocking member is embedded in the sunken platform, and the surface of the backrest blocking member is flush with the surface of the blow-molded backrest.

[0013] In a second aspect, an embodiment of the present application provides a massage chair frame, including the above-mentioned massage chair backrest guide rail and a massage mechanism; wherein, a rack is laid in the U-shaped guide rail, and a gear meshing with the rack is provided on the connecting portion of the massage mechanism; the massage mechanism is driven to move in the U-shaped guide rail.

[0014] As an alternative embodiment, the inner wall of the U-shaped guide rail has a laying surface facing away from the user, the rack is provided on the laying surface and the extending path is the same as the extending path of the U-shaped guide rail.

[0015] In a preferred embodiment of the present application, the above-mentioned massage chair backrest guide rail is arranged in cooperation with the massage mechanism of the massage chair. The massage chair backrest guide rail includes two U-shaped guide rails located on both sides of the massage mechanism. The openings of the U-shaped guide rails face the massage mechanism. Connecting portions are provided on both sides of the massage mechanism, and the two connecting portions are inserted into the two U-shaped guide rails through corresponding openings; a guide rail mounting opening is formed on the side surface of the U-shaped guide rail, and the connecting portion is inserted into the U-shaped guide rail through the guide rail mounting opening. The U-shaped guide rail is provided with card slots on both sides of the guide rail mounting opening, and the extending direction of the card slots is perpendicular to the path of the U-shaped guide rail; plugging portions corresponding to the card slots are provided on both sides of the guide rail blocking member.

[0016] The beneficial effects of the embodiments of the present application include:

[0017] In a first aspect, an embodiment of the present application provides a massage chair backrest guide rail, which is arranged in cooperation with the massage mechanism of the massage chair. The massage chair backrest guide rail includes two U-shaped guide rails located on both sides of the massage mechanism, with the openings of the U-shaped guide rails facing the massage mechanism. Connection parts are provided on both sides of the massage mechanism, and the two connection parts are inserted into the two U-shaped guide rails through the corresponding openings. In the embodiment of the present application, a guide rail installation opening is provided on the side of the U-shaped guide rail, and the connection part is installed into the U-shaped guide rail through the guide rail installation opening. Compared with the prior art, in the embodiment of the present application, the massage mechanism can be installed from the side of the backrest guide rail, avoiding assembling the massage mechanism from the top of the backrest guide rail. Therefore, a crossbeam connecting piece can be fixedly arranged on the upper part of the backrest guide rail provided in the embodiment of the present application, which is beneficial to improving the structural strength of the massage chair frame. In addition, when disassembling and assembling and maintaining the massage mechanism in the embodiment of the present application, the massage mechanism can be disassembled and assembled from the side, effectively reducing the disassembly and assembly difficulty and improving the work efficiency of maintenance and repair.

[0018] In a second aspect, an embodiment of the present application provides a massage chair frame, which includes the above-mentioned massage chair backrest guide rail and a massage mechanism; wherein, a rack is laid in the U-shaped guide rail, and a gear meshing with the rack is provided on the connection part of the massage mechanism; the massage mechanism is driven to move in the U-shaped guide rail. The massage chair frame provided in the embodiment of the present application adopts the above-mentioned massage chair backrest guide rail. A crossbeam structure connecting the two U-shaped guide rails can be fixedly arranged on the top of the above-mentioned massage chair backrest guide rail, and both ends of the crossbeam structure can be welded to the U-shaped guide rails respectively. Therefore, an integral massage chair frame can be formed, effectively improving the structural strength of the massage chair frame. In addition, the massage chair frame provided in the embodiment of the present application can disassemble and assemble the massage mechanism from the side, effectively reducing the disassembly and assembly difficulty of the massage mechanism during maintenance and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is one of the structural schematic diagrams of the massage chair backrest guide rail according to the embodiment of the present application;

[0021] Figure 2 It is the second structural schematic diagram of the massage chair backrest guide rail according to the embodiment of the present application;

[0022] Figure 3 It is the third structural schematic diagram of the massage chair backrest guide rail according to the embodiment of the present application;

[0023] Figure 4 It is the fourth structural schematic diagram of the massage chair backrest guide rail according to the embodiment of the present application;

[0024] Figure 5 This is the fifth structural schematic diagram of the backrest guide rail of the massage chair in the embodiments of the present application;

[0025] Figure 6 This is the sixth structural schematic diagram of the backrest guide rail of the massage chair in the embodiments of the present application;

[0026] Figure 7 This is the seventh structural schematic diagram of the backrest guide rail of the massage chair in the embodiments of the present application;

[0027] Figure 8 This is the first structural schematic diagram of the massage chair frame in the embodiments of the present application;

[0028] Figure 9 This is the second structural schematic diagram of the massage chair frame in the embodiments of the present application.

[0029] Icon:

[0030] 100 - Massage chair backrest guide rail; 101 - Massage mechanism; 102 - U-shaped guide rail; 103 - Connection part; 104 - Guide rail mounting opening; 105 - Guide rail blocking member; 106 - Card slot; 107 - Insertion part; 108 - Contact surface; 109 - Connection ear; 110 - Connection hole; 111 - Blow-molded backrest; 112 - Backrest mounting opening; 113 - Backrest blocking member; 114 - Counterbore; 115 - Massage chair frame; 116 - Rack; 117 - Gear; 118 - Crossbeam structure. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the detailed description of the embodiments of the present application provided in the accompanying drawings below is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0033] It should be noted that like reference numerals and letters denote like items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] The assembly scheme of the backrest guide rail 100 and the massage mechanism 101 provided by the prior art is to install the massage mechanism 101 from the top of the backrest guide rail. When installing the massage mechanism 101 from the top of the massage chair, some structures at the top of the backrest need to be disassembled to expose an opening. Therefore, the prior art needs to set the connecting cross beam at the top of the massage chair frame 115 in a detachable manner and cannot be welded and fixed, resulting in a reduction in the overall strength of the massage chair frame 115. In addition, during the use of the massage chair, when the massage mechanism 101 fails and needs to be repaired, the blocking structure at the top of the massage chair frame 115 needs to be disassembled to remove the massage mechanism 101, making the repair work difficult and time-consuming and laborious.

[0036] To solve the above technical problems, an embodiment of the present application provides a massage chair backrest guide rail 100 and a massage chair frame 115.

[0037] Refer to Figure 1 As shown, an embodiment of the present application provides a massage chair backrest guide rail 100, which is cooperatively arranged with the massage mechanism 101 of the massage chair. The massage chair backrest guide rail 100 includes two U-shaped guide rails 102 located on both sides of the massage mechanism 101. The openings of the U-shaped guide rails 102 face the massage mechanism 101. Connecting portions 103 are provided on both sides of the massage mechanism 101, and the two connecting portions 103 are inserted into the two U-shaped guide rails 102 through the corresponding openings; guide rail mounting openings 104 are formed on the side surfaces of the U-shaped guide rails 102, and the connecting portions 103 are installed into the U-shaped guide rails 102 through the guide rail mounting openings 104.

[0038] It should be noted that the two U-shaped guide rails 102 are located on the left and right sides of the massage mechanism 101, and the massage mechanism 101 can be driven to move on the U-shaped guide rails 102 through the connecting portions 103. Among them, the openings of the U-shaped guide rails 102 face the massage mechanism 101, and the connecting portions 103 extending from the left and right sides of the massage mechanism 101 can be directly inserted into the U-shaped guide rails 102.

[0039] It should be noted that, refer to Figure 7 And Figure 8 As shown, a rack 116 is laid in the U-shaped guide rail 102, and a gear 117 meshing with the rack 116 is provided on the connecting portion 103 of the massage mechanism 101; the massage mechanism 101 is driven to move in the U-shaped guide rail 102.

[0040] It should be noted that the guide rail mounting opening 104 can be provided on the side close to the user, or can be provided on the side facing away from the user according to needs. Those skilled in the art can make a choice according to needs, and no special limitation is made thereto.

[0041] Among them, the distance between the guide rail mounting opening 104 and the top of the U-shaped guide rail 102 can be set by those skilled in the art according to needs.

[0042] It should be noted that guide rail mounting openings 104 are provided on both U-shaped guide rails 102. If the guide rail mounting openings 104 are provided on one side of the U-shaped guide rail 102 and the massage core 101 can be smoothly disassembled and assembled, the guide rail mounting openings 104 can also be opened on one side of the U-shaped guide rail 102.

[0043] The massage chair backrest guide rail 100 provided by the embodiment of the present application is cooperatively arranged with the massage core 101 of the massage chair. The massage chair backrest guide rail 100 includes two U-shaped guide rails 102 located on both sides of the massage core 101. The openings of the U-shaped guide rails 102 face the massage core 101. Connecting parts 103 are arranged on both sides of the massage core 101, and the two connecting parts 103 are inserted into the two U-shaped guide rails 102 through corresponding openings; a guide rail mounting opening 104 is provided on the side surface of the U-shaped guide rail 102 in the embodiment of the present application, and the connecting part 103 is installed in the U-shaped guide rail 102 through the guide rail mounting opening 104. Compared with the prior art, the massage core 101 can be installed from the side of the backrest guide rail in the embodiment of the present application, avoiding assembling the massage core 101 from the top of the backrest guide rail. Therefore, a crossbeam connecting piece can be fixedly arranged on the upper part of the backrest guide rail provided by the embodiment of the present application, which is beneficial to improving the structural strength of the massage chair frame 115. In addition, when disassembling, assembling and maintaining the massage core 101 in the embodiment of the present application, the massage core 101 can be disassembled and assembled from the side, effectively reducing the disassembly and assembly difficulty and improving the maintenance work efficiency.

[0044] Further, referring to Figure 2 and Figure 3 as shown, it further includes a guide rail blocking piece 105 arranged on the U-shaped guide rail 102 for blocking the guide rail mounting opening 104. The guide rail blocking piece 105 is detachably connected to the U-shaped guide rail 102.

[0045] Exemplarily, referring to Figure 4 as shown, the U-shaped guide rail 102 is provided with clamping grooves 106 on both sides of the guide rail mounting opening 104, and the extending direction of the clamping grooves 106 is perpendicular to the path of the U-shaped guide rail 102; both sides of the guide rail blocking piece 105 are provided with inserting parts 107 corresponding to and inserted into the clamping grooves 106.

[0046] It should be noted that referring to Figure 4As shown, the extending direction of the card slot 106 is perpendicular to the extending path of the U-shaped guide rail 102. Among them, in one way, it extends from the opening side of the U-shaped guide rail 102 to the bottom of the U-shaped guide rail 102, that is, the guide rail blocking member 105 is inserted along the inner side of the massage chair backrest guide rail 100 to the outside; the structure of the card slot 106 can limit the guide rail blocking member 105 in the direction perpendicular to the movement plane of the massage mechanism 101 and form a blocking force in this direction to ensure the stability of the guide rail blocking member 105 in the direction perpendicular to the movement plane of the massage mechanism 101.

[0047] Another way is to refer to Figure 5 and Figure 6 As shown, the guide rail blocking member 105 is inserted along the outside of the massage chair backrest guide rail 100 to the inside.

[0048] The difference is that the guide rail blocking member 105 can also be inserted into the card slot 106 in the direction perpendicular to the movement plane of the massage mechanism 101. When inserting in this direction, a locking force needs to be formed through other clamping and locking structures to prevent the guide rail blocking member 105 from disengaging from the card slot 106.

[0049] For the above two insertion and blocking methods, they can both be locked by bolts and clamping components, etc. to ensure the stability of the connection between the guide rail blocking member 105 and the card slot 106.

[0050] Exemplarily, referring to Figure 4 As shown, one end of the U-shaped guide rail 102 has an abutting surface 108. A connecting ear 109 is provided on the guide rail blocking member 105 close to the opening side of the U-shaped guide rail 102. The inserting portion 107 is inserted into the card slot 106, and the connecting ear 109 is in contact with the abutting surface 108.

[0051] Among them, a connecting hole 110 is opened on the abutting surface 108, and a bolt connecting member connected to the connecting hole 110 is provided on the connecting ear 109 to form a locking force between the connecting ear 109 and the abutting surface 108.

[0052] Referring to Figure 7 and Figure 8 As shown, as an optional implementation manner, the guide rail mounting opening 104 is opened on the side of the U-shaped guide rail 102 close to the user; further includes a blow-molded backrest 111 provided on the side of the U-shaped guide rail 102 close to the user. The blow-molded backrest 111 is provided with a backrest mounting opening 112 at a position corresponding to the guide rail mounting opening 104; along the arrangement direction of the backrest mounting opening 112 and the guide rail mounting opening 104, the projection edge of the guide rail mounting opening 104 is located within the projection plane of the backrest mounting opening 112.

[0053] Among them, it further includes a backrest blocking member 113 provided on the blow-molded backrest 111 for blocking the backrest mounting opening 112, and the backrest blocking member 113 is detachably connected to the blow-molded backrest 111.

[0054] It should be noted that a blow-molded backrest 111 is further provided on the U-shaped guide rail 102 in the embodiments of the present application. When a user uses the massage chair, the blow-molded backrest 111 can support the user's back, that is, the user's back can lean against the blow-molded backrest 111. It should be noted that the guide rail mounting opening 104 is opened on the side of the U-shaped guide rail 102 close to the user, and a backrest mounting opening 112 is also opened in the area where the blow-molded backrest 111 covers the guide rail mounting opening 104.

[0055] Among them, the area of the backrest mounting opening 112 is larger than that of the guide rail mounting opening 104. It is convenient to disassemble and assemble the guide rail blocking member 105 on the guide rail mounting opening 104 from the backrest mounting opening 112, and thus it is convenient to quickly disassemble and assemble the massage mechanism 101.

[0056] It should be noted that the backrest blocking member 113 can be detachably connected to the blow-molded backrest 111 by means of bolts or snap connectors, etc., so as to facilitate the quick disassembly of the backrest blocking member 113.

[0057] Refer to Figure 9 As shown, as an alternative embodiment, the blow-molded backrest 111 has a sunk platform 114 recessed toward the U-shaped guide rail 102, and the backrest blocking member 113 is embedded in the sunk platform 114, and the surface of the backrest blocking member 113 is flush with the surface of the blow-molded backrest 111.

[0058] The surface of the backrest blocking member 113 in the embodiments of the present application is flush with the surface of the blow-molded backrest 111, which can ensure the flatness of the entire surface of the blow-molded backrest 111 and avoid discomfort caused by protrusions or depressions.

[0059] The embodiments of the present application provide a massage chair frame 115, including the above-mentioned massage chair backrest guide rail 100 and the massage mechanism 101; among them, a rack 116 is laid in the U-shaped guide rail 102, and a gear 117 meshing with the rack 116 is provided on the connecting portion 103 of the massage mechanism 101; the massage mechanism 101 is driven to move in the U-shaped guide rail 102.

[0060] Among them, the inner wall of the U-shaped guide rail 102 has a laying surface facing away from the user, and the rack 116 is arranged on the laying surface and the extending path is the same as the extending path of the U-shaped guide rail 102.

[0061] The massage chair frame 115 provided by the embodiment of the present application adopts the above-mentioned massage chair backrest guide rail 100. A crossbeam structure 118 connecting two U-shaped guide rails 102 can be fixedly arranged at the top of the above-mentioned massage chair backrest guide rail 100. The two ends of the crossbeam structure 118 can be respectively welded to the U-shaped guide rails 102, so that an integral massage chair frame 115 can be formed, effectively improving the structural strength of the massage chair frame 115. In addition, the massage chair frame 115 provided by the embodiment of the present application can disassemble and assemble the massage movement 101 from the side, effectively reducing the disassembly and assembly difficulty of the massage movement 101 during maintenance and improving work efficiency.

[0062] In a preferred embodiment of the present application, the above-mentioned massage chair backrest guide rail 100 is arranged in cooperation with the massage movement 101 of the massage chair. The massage chair backrest guide rail 100 includes two U-shaped guide rails 102 located on both sides of the massage movement 101. The openings of the U-shaped guide rails 102 face the massage movement 101. Connecting parts 103 are arranged on both sides of the massage movement 101, and the two connecting parts 103 are inserted into the two U-shaped guide rails 102 through the corresponding openings; a guide rail installation opening 104 is formed on the side of the U-shaped guide rail 102, and the connecting part 103 is installed into the U-shaped guide rail 102 through the guide rail installation opening 104. The U-shaped guide rail 102 is provided with clamping grooves 106 on both sides of the guide rail installation opening 104, and the extending direction of the clamping grooves 106 is perpendicular to the path of the U-shaped guide rail 102; both sides of the guide rail blocking member 105 are provided with inserting parts 107 corresponding to the clamping grooves 106 for insertion.

[0063] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A massage chair backrest guide rail, arranged in cooperation with a massage movement (101) of the massage chair, characterized in that: The massage chair backrest guide rail (100) comprises two U-shaped guide rails (102) located on both sides of a massage movement (101); the opening of the U-shaped guide rail (102) faces the massage movement (101); connecting parts (103) are arranged on both sides of the massage movement (101); the two connecting parts (103) are correspondingly inserted into the two U-shaped guide rails (102) through the openings; a guide rail installation opening (104) is opened on the side of the U-shaped guide rail (102); the connecting part (103) is installed into the U-shaped guide rail (102) through the guide rail installation opening (104).

2. The massage chair backrest guide rail according to claim 1, characterized in that: It also comprises a guide rail sealing member (105) arranged on the U-shaped guide rail (102) for sealing the guide rail installation opening (104); the guide rail sealing member (105) is detachably connected to the U-shaped guide rail (102).

3. The massage chair backrest guide rail according to claim 2, characterized in that: The U-shaped guide rail (102) is provided with a clamping groove (106) on both sides of the guide rail installation opening (104) and the extension direction is perpendicular to the path of the U-shaped guide rail (102); and the guide rail sealing member (105) is provided with a plug-in portion (107) corresponding to the plug-in groove (106) on both sides.

4. The massage chair backrest guide rail according to claim 3, characterized in that: One end of the U-shaped guide rail (102) has an abutment surface (108), and the guide rail sealing member (105) is provided with a connecting ear (109) on one side close to the opening of the U-shaped guide rail (102). The plug-in portion (107) is inserted into the slot (106), and the connecting ear (109) is in contact with the abutment surface (108).

5. The massage chair backrest guide rail according to claim 4, characterized in that: A connecting hole (110) is provided on the abutting surface (108), and a bolt connecting piece connected to the connecting hole (110) is provided on the connecting ear (109), so that a locking force is formed between the connecting ear (109) and the abutting surface (108).

6. The massage chair backrest guide rail according to claim 1, characterized in that: The guide rail mounting opening (104) is provided on the side of the U-shaped guide rail (102) close to the user; the invention also comprises a blow-molded backrest (111) provided on the side of the U-shaped guide rail (102) close to the user, the blow-molded backrest (111) being provided with a backrest mounting opening (112) at a position corresponding to the guide rail mounting opening (104); along the arrangement direction of the backrest mounting opening (112) and the guide rail mounting opening (104), the projection edge of the guide rail mounting opening (104) is located within the projection surface of the backrest mounting opening (112).

7. The massage chair backrest guide rail according to claim 6, characterized in that: It also comprises a backrest sealing member (113) arranged on the blow-molded backrest (111) for sealing the backrest mounting opening (112); the backrest sealing member (113) is detachably connected to the blow-molded backrest (111).

8. The massage chair backrest guide rail according to claim 7, characterized in that: The blow-molded backrest (111) has a sink (114) which is recessed toward the side close to the U-shaped guide rail (102), the backrest sealing member (113) is embedded in the sink (114), and the surface of the backrest sealing member (113) is flush with the surface of the blow-molded backrest (111).

9. A massage chair frame, characterized in that: It comprises a massage chair backrest guide rail (100) and a massage movement (101) as described in any one of claims 1 to 8; wherein a rack (116) is laid inside the U-shaped guide rail (102), and a gear (117) meshing with the rack (116) is provided on the connecting part (103) of the massage movement (101); the massage movement (101) is driven to move inside the U-shaped guide rail (102).

10. The massage chair frame according to claim 9, characterized in that: The inner wall of the U-shaped guide rail (102) has a paving surface facing away from the user, and the rack (116) is arranged on the paving surface and has an extension path consistent with the extension path of the U-shaped guide rail (102).

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