Massage mesh chair and chair back assembly thereof

Abstract

A massage mesh chair and a chair back assembly thereof are provided. The chair back assembly includes a waist massage mechanism and an adjusting assembly for adjusting the front and rear positions of the waist massage mechanism. The adjusting assembly includes a first bracket, a second bracket, a first connecting rod, and a second connecting rod; the second bracket is fixed on a chair back frame; the first bracket is located in front of the second bracket; one end of the first connecting rod is slidably connected to the second bracket, and the other end of the first connecting rod is hinged to the first bracket. By means of adjusting the front and rear positions of the waist massage mechanism mounted on the chair back, a more comfortable massage experience can be provided for a user.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of massage chairs, and in particular to a massage mesh chair and a chair back assembly thereof.BACKGROUND

[0002] With the development of the social economy, people's working pressure is increasing and their working hours are getting longer. As one of the pieces of furniture that typically remains in contact with the human body for long periods, office chairs have a significant impact on human health.

[0003] The patent document with publication number CN209031574U discloses an office massage chair, including a chair back, a chair seat, and chair legs. A massage device is mounted inside the chair back. The massage device includes a neck massage device, a shoulder massage device, and a waist massage device. The neck massage device includes a fixed single-head massage system, the shoulder massage device includes a moving massage system, and the waist massage device includes a fixed double-head massage system. The waist massage device includes a waist massage head and a waist motor. The waist massage head is a double-head massage system, and the double-head massage system is vertically arranged at the lower part of the chair back; the waist massage head is arranged with a fixed double-head massage system, the two massage heads are arranged at different heights to create a 3D massage effect, massaging both sides of the lumbar spine through periodic rotation. When a user sits on the massage mesh chair, the contour from the user's back to the buttocks is curved, and the user's waist often protrudes forward. Since every user has a different body shape, when they use the same massage mesh chair, not all their waists can fit the waist massage device, resulting in the comfort of the chair varying from person to person and reducing the overall user experience and limiting the chair's applicability.SUMMARY

[0004] To solve the problems in the prior art, the purpose of the present disclosure is to provide a massage mesh chair and a chair back assembly thereof. Users can adjust the front and rear positions of the waist massage mechanism mounted on the chair back by using the adjusting assembly, so that the waist massage mechanism can provide effective support and appropriate massage intensity for more users, thus accommodating a wider range of users and offering them a more comfortable massage experience.

[0005] To achieve the above purpose, the present disclosure provides the following technical solution:

[0006] A chair back assembly includes a chair back frame and a waist massage assembly mounted on the chair back frame. The waist massage assembly includes a waist massage mechanism, and the waist massage assembly further includes an adjusting assembly for adjusting the front and rear positions of the waist massage mechanism. Among them, the adjusting assembly includes a first bracket, a second bracket, a first connecting rod, a second connecting rod, and a third bracket. Specifically, the second bracket is fixed to the chair back frame, and the first bracket is located in front of the second bracket; one end of the first connecting rod is hinged to the third bracket, and the other end of the first connecting rod is hinged to the first bracket; one end of the second connecting rod is hinged to the second bracket, and the other end of the second connecting rod is slidably connected to the first bracket; the first connecting rod and the second connecting rod intersect, and the first connecting rod and the second connecting rod are hinged; the third bracket is slidably connected to the second bracket, and the waist massage mechanism is mounted on the first bracket; the adjusting assembly further includes a driving member for driving the third bracket to slide on the second bracket. When the third bracket slides, it can drive the first bracket to move forward and backward by means of the first connecting rod and the second connecting rod.

[0007] Preferably, the waist massage assembly further includes a housing, and through the housing the adjusting assembly is mounted on the chair back frame. The housing is provided with a forward-opening movable cavity, and the housing is fixedly connected to the chair back frame. The second bracket is located within the movable cavity and the second bracket is fixedly connected to the housing.

[0008] Preferably, the upper part of the chair back frame and the front end of the housing are respectively covered with a tensioned mesh, a supporting fabric is mounted on the housing, and the supporting fabric includes a heating layer.

[0009] Preferably, the driving member includes a traction wire for driving the third bracket to slide, one end of the traction wire is connected to the third bracket, and the other end of the traction wire is mounted on the housing in a pullable manner.

[0010] Preferably, the driving member further includes a reset member for driving the third bracket to reset.

[0011] Preferably, the driving member is a drive motor; the third bracket is fixed with a second nut, a lead screw is threadedly connected to the nut, and the drive motor is drivingly connected to the lead screw.

[0012] Preferably, the chair back frame is of a frame structure, and the rear side part of the housing protrudes backward and passes through the middle part of the chair back frame.

[0013] Preferably, the chair back assembly further includes a battery compartment mounted on the housing, with a battery arranged in the battery compartment for supplying power to the waist massage mechanism; and the battery compartment includes a battery rack slidably mounted on the housing for accommodating the battery.

[0014] Preferably, the waist massage mechanism includes massage balls with a heating function.

[0015] A massage mesh chair includes the preceding chair back assembly.

[0016] The beneficial effects of the technical solution of the present disclosure are as follows: by adjusting the front and rear positions of the waist massage mechanism, the waist massage mechanism can better support a user's waist, alleviating the problem of low back pain caused by prolonged sitting; furthermore, thanks to the change in the position of the waist massage mechanism, various users can define massage intensity that is suitable for them, providing more users with a more comfortable massage experience.BRIEF DESCRIPTION OF DRAWINGS

[0017] FIG. 1 is a structural schematic diagram of a chair back assembly according to the present disclosure. FIG. 2 is a structural schematic diagram of a waist massage mechanism. FIG. 3 is a structural schematic diagram of an adjusting assembly. FIG. 4 is another structural schematic diagram of the adjusting assembly. FIG. 5 is a structural schematic diagram of a first connecting rod. FIG. 6 is a structural schematic diagram of a second bracket. FIG. 7 is a structural schematic diagram of a third bracket. FIG. 8 is a structural schematic diagram of a first bracket.

[0018] Reference numerals: 1. chair back frame; 2. housing; 3. waist massage mechanism; 4. adjusting assembly; 41. first bracket; 411. first connecting part; 4111. first sliding hole; 412. second connecting part; 413. seventh connecting part; 42. second bracket; 421. third connecting part; 4211. second sliding hole; 422. fourth connecting part; 423. third sliding hole; 43. first connecting rod; 44. second connecting rod; 45. third bracket; 451. fifth connecting part; 452. eighth connecting part; 46. third connecting rod; 5. driving member; 51. mounting seat; 52. screw; 53. first nut; 54. traction wire; 55. hose; 56. handle; 61. mounting frame; 62. battery rack; 71. fourth bracket; 72. return spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein identical or similar reference numerals throughout designate identical or similar elements or elements having identical or similar functions. The embodiments described below by reference to the accompanying drawings are exemplary and intended for use in explaining the present disclosure, and shall not be construed as limiting the present disclosure.

[0020] In the description of the present disclosure, it needs to be understood that the azimuth or position relationships indicated by the terms "central", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise" and "counterclockwise" are based on those shown in the drawings. It is only for convenience of description and simplification of the present disclosure, not to indicate or imply that the referred devices or components must have a specific orientation, be constructed and operate in a specific orientation, and thus cannot be understood as limiting the present disclosure.

[0021] Furthermore, the terms "first" and "second" are used merely for illustrative purposes and shall not be construed as indicating or implying relative importance or as implicitly specifying the number of technical features indicated. Thus, the features defined with the terms "first" and "second" may explicitly or implicitly include one or more of these features. Unless otherwise specifically defined, "a plurality of" means two or more in the description of the present disclosure.

[0022] In the present disclosure, unless otherwise specified or restricted, the terms of "installation", "interconnection", "connection" and "fixing" shall be understood as a general sense. For example, the connection can be fixed connection, removable connection, integrated connection, mechanical connection, electrical connection, direct connection, indirect connection through intermediate media or connection between two components. For those of ordinary skill in the art, understanding of the specific meanings of the above terms in the present disclosure can be acquired according to specific situations.

[0023] In the present disclosure, unless otherwise explicitly specified and restricted, "a first feature above or below a second feature" may include "direct contact between the first feature and the second feature", and may also include that "the first feature and the second feature are not in direct contact but they are in contact through other feature(s) between them". Besides, the first feature "above", "on top of" and "onto" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in the level than the second feature. The first feature "below", "at the bottom of" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is lower in the level than the second feature.

[0024] The front, back, left, and right orientations described in the following embodiments correspond to those of the chair product: the side with the chair back is considered the rear, the side opposite the chair back is considered the front, and the left and right are determined based on the front and rear orientations.

[0025] A chair back assembly is as shown in FIG. 1. The chair back assembly includes a chair back frame 1 and a waist massage assembly mounted on the chair back frame 1. The waist massage assembly includes a waist massage mechanism 3 and an adjusting assembly 4 for adjusting the front and rear positions of the waist massage mechanism 3. As shown in FIGS. 2, 3 and 4, the adjusting assembly 4 includes a first bracket 41, a second bracket 42, a first connecting rod 43, and a second connecting rod 44. The second bracket 42 is fixed to the chair back frame 1, the first bracket 41 is located in front of the second bracket 42, one end of the first connecting rod 43 is slidably connected to the second bracket 42, the other end of the first connecting rod 43 is hinged to the first bracket 41, one end of the second connecting rod 44 is hinged to the second bracket 42, the other end of the second connecting rod 44 is slidably connected to the first bracket 41, the first connecting rod 43 and the second connecting rod 44 intersect, and the first connecting rod 43 and the second connecting rod 44 are hinged, and thus the first connecting rod 43 and the second connecting rod 44 can move synchronously; a third bracket 45 is slidably mounted on the second bracket 42, the third bracket 45 is hinged to the first connecting rod 43, and the waist massage mechanism 3 is mounted on the first bracket 41; the adjusting assembly 4 further includes a driving member 5 for driving the third bracket 45 to slide on the second bracket 42. When the third bracket 45 slides, it can drive the first bracket 41 to move forward and backward by means of the first connecting rod 43 and the second connecting rod 44.

[0026] The process of adjusting the front and rear positions of the waist massage mechanism 3 is as follows: driving the third bracket 45 to move and slide on the second bracket 42, the third bracket 45 driving the first connecting rod 43 that is hinged to it to move, and the first connecting rod 43 driving the first bracket 41 to move away from or closer to the second bracket 42, thereby making the waist massage mechanism 3 press against a user's waist. In this way, by adjusting the front and rear positions of the waist massage mechanism 3, the waist massage mechanism 3 can better support a user's waist, alleviating the problem of low back pain caused by prolonged sitting; furthermore, thanks to the change in the position of the waist massage mechanism 3, various users can define massage intensity that is suitable for them, providing more users with a more comfortable massage experience.

[0027] To make the driving process more stable, in this embodiment, as shown in FIG. 5, there are two second connecting rods 44 and the two second connecting rods 44 are arranged in parallel. The first bracket 41 is positioned between the two second connecting rods 44, and the two second connecting rods 44 are fixedly connected by a third connecting rod 46. This allows both the upper and lower ends of the first bracket 41 to be stressed equally, making the adjusting process more stable. As shown in FIG. 8, the first bracket 41 includes two first connecting part 411 and two second connecting part 412 that protrude forward. The two first connecting parts 411 are arranged vertically, and the two second connecting parts 412 are also arranged vertically. The first connecting parts 411 are located to the left of the second connecting parts 412, and each of the two first connecting parts 411 is provided with a first sliding hole 4111. As shown in FIG. 6, the second bracket 42 includes two third connecting part 421 and two fourth connecting part 422 that protrude forward. The two third connecting parts 421 are arranged vertically, and the two fourth connecting parts 422 are also arranged vertically. The third connecting parts 421 are located to the left of the fourth connecting parts 422. A second sliding hole 4211 is opened on the third connecting part 421, and a third sliding hole 423 is opened on the second bracket 42. As shown in FIG. 7, the third bracket 45 includes two fifth connecting parts 451 that protrude forward, and the two fifth connecting parts 451 are arranged vertically. As shown in FIGS. 2-4, in the adjusting assembly 4, the third bracket 45 is located between the third connecting part 421 and the fourth connecting part 422 of the second bracket 42, the two third connecting parts 421 of the second bracket 42 are located between the two fifth connecting parts 451 of the third bracket 45, the rear ends of the two first connecting rods 43 are located between the two third connecting parts 421 of the second bracket 42, and the third connecting rod 46 is located between the two third connecting parts 421 of the second bracket 42. The first connecting rod 43 and the fifth connecting part 451 of the third bracket 45 adjacent thereto are hinged by a first hinge shaft, and the first hinge shaft passes through the second sliding hole 4211 on the third connecting part 421 opened on the second bracket 42, so that the first connecting rod 43 is slidably connected to the second bracket 42. The third bracket 45 is fixed with a limiter, and the limiter limits the third sliding hole 423 passing through the second bracket 42, so that the third bracket 45 can only move in the left and right directions. The front end of the first connecting rod 43 is hinged to the second connecting part 412 of the first bracket 41 by means of a second hinge shaft. In this embodiment, there are two second connecting rods 44, and the two second connecting rods 44 are located between the fourth connecting parts 422 of the second bracket 42. The rear end of the second connecting rod 44 is hinged to the fourth connecting part 422 of the second bracket 42 adjacent thereto by means of a third hinge shaft. A fourth hinge shaft is mounted at the front end of the second connecting rod 44, and the fourth hinge shaft passes through the first sliding hole 4111 of the first connecting part 411 on the first bracket 41. Thereby, the second connecting rod 44 is slidably connected to the first bracket 41.

[0028] To facilitate the installation of the chair back assembly and the waist massage mechanism, in this embodiment, as shown in FIGS. 1 and 2, the chair back frame 1 is of a frame structure, and the installation of the waist massage mechanism further includes a housing 2. The rear side part of the housing 2 is convex and passes through the chair back frame 1. The housing 2 has a forward-opening movable cavity, and the second bracket 42 is fixed to the rear end wall of the movable cavity. This allows for beautification of the chair back assembly structure and makes the chair back assembly more compact, providing the waist massage mechanism 3 with a larger range of motion.

[0029] In this embodiment, as shown in FIGS. 1-4, to make the adjusting process more convenient, the driving member includes a traction wire 54 for driving the third bracket 45 to slide. One end of the traction wire 54 is connected to a protruding eighth connecting part 452 on the third bracket 45, and the other end of the traction wire 54 is connected to the chair back frame 1. Pulling the traction wire 54 can adjust the spacing between the second bracket 42 and the first bracket 41 by means of the third bracket 45, the first connecting rod 43, and the second connecting rod 44. In this way, the use of a flexible traction wire facilitates routing, simplifies the structure of the chair back, and makes installation, inspection, and maintenance more convenient. Further, a mounting seat 51 is fixed to the housing 2, and a screw 52 is rotatably mounted on the mounting seat 51. A first nut 53 is threadedly connected to the screw 52. The first nut 53 is slidably matched with the mounting seat 51. The other end of the traction wire 54 is fixed to the first nut 53, so that the position of the massage system can be finely and precisely adjusted manually, allowing most users to find a suitable massage position and massage intensity. Further, as shown in FIGS. 3 and 4, one end of the screw 52 protrudes with a sixth connecting part 521 passing through the mounting seat 51, and a handle 56 is fixedly mounted on the sixth connecting part 521, making adjustment more convenient. Further, the driving member includes a return spring 72, one end of the return spring 72 is connected to the first bracket 41, and the other end of the return spring 72 is connected to the fourth bracket 71 fixed on an inner wall of the housing 2. In other embodiments, the other end of the return spring 72 may be connected to the second bracket or the third bracket; thereby enabling the mounting seat 51 to automatically reset. Further, there are two return springs 72, and the two return springs 72 are arranged on the left and right sides. Both the left and right ends of the first bracket 41 protrude with a seventh connecting part 413. The front end of the return spring 72 is connected to the seventh connecting part 413, and the rear end of the return spring 72 is connected to the fourth bracket 71 fixed on the chair back frame 1, so that the first bracket 41 is evenly stressed and moves stably during the reset process. Further, the traction wire 54 is externally sleeved with a hose 55. One end of the hose 55 is fixedly connected to the mounting seat, and the other end of the hose is hinged to one end of the second bracket close to the fourth connecting part, thereby protecting the traction wire and extending its service life.

[0030] In other embodiments, the driving member includes a second nut, a lead screw, a drive motor, and a switch for controlling the drive motor. The second nut is fixed to the third bracket 45, the lead screw is threadedly connected to the first nut, the drive motor is mounted on the housing or the second bracket 42, and the output end of the drive motor is fixedly connected to one end of the lead screw, thus enabling the drive motor to rotate the lead screw. When the lead screw rotates, it can drive the second bracket 42 to move in the left and right directions, thereby completing the adjustment of the front and rear positions of the waist massage mechanism. The switch is mounted outside the housing and is electrically connected to the drive motor. In this way, when adjusting the position of the waist massage mechanism, the switch can be pressed to control the forward or reverse rotation of the lead screw by controlling the output of the drive motor, thereby achieving the purpose of adjusting the front and rear positions of the waist massage mechanism. This makes the control of the chair more convenient and the adjustment more precise.

[0031] In other embodiments, the driving member may be an electric push cylinder, the cylinder body of the electric push cylinder can be mounted on the rear housing of the second bracket, and the telescopic end of the electric push cylinder is connected to the third bracket 45, thereby achieving the purpose of adjusting the front and rear positions of the waist massage mechanism by controlling the electric push cylinder.

[0032] In this embodiment, as shown in FIGS. 1, 2, and 3, the waist massage assembly further includes a battery compartment mounted on the chair back assembly. A battery for supplying power to the waist massage mechanism 3 is arranged in the battery compartment, so that the chair equipped with the preceding chair back assembly can be moved and provide massage services at any time. Furthermore, the battery compartment includes a mounting frame 61 and a battery rack 62 for accommodating the battery. The mounting frame 61 is fixed inside the housing 2 and the mounting frame 61 is located below the adjusting assembly 4. The battery rack is slidably mounted on the mounting frame 61. The rear end of the housing 2 has an opening communicating with its interior, and the opening is located at the rear side of the battery rack 62, allowing the battery rack 62 to slide on the chair back frame 1. During maintenance, the battery rack 62 can be removed from the opening of the housing 2 to facilitate servicing.

[0033] A massage mesh chair includes the preceding chair back assembly, in which the frame-type chair back frame includes a middle part and an upper part. The middle part of the chair back frame serves as a waist support part, and the rear end of the housing passes through the waist support part. The upper part serves as the backrest part, and the backrest part is wrapped with a tensioned mesh. The housing is equipped with a supporting fabric that can cover the front end of its movable cavity. When the mesh chair is in use, the supporting fabric supports the user's waist. The massage balls of the waist massage mechanism 3 massages the user's waist by pushing against the supporting fabric.

[0034] In this embodiment, the supporting fabric includes a heating layer and an elastic base layer. The base layer can be made of various materials such as tensioned mesh or elastic fabric. The heating layer may contain heating wires, graphene, or other heating materials. The power supply provides power to the heating layer, enabling it to emit heat for hot compress therapy to the user's entire waist, thereby improving the comfort of the massage mesh chair.

[0035] In this embodiment, the massage balls of the waist massage mechanism have a heating function. Therefore, when a massage mesh chair is in use, the waist massage mechanism can apply focused hot compress to the massage area, which can further enhance the massage effect of the mesh chair and provide users with a better experience. The massage ball of the waist massage mechanism can further be equipped with mood lighting to further enhance the user experience.

[0036] In the description of the specification, descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the present disclosure. In the specification, the schematic expressions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0037] Although the embodiments of the present disclosure have been shown and described above, it is understood that these embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art may make changes, modifications, replacements, and variations to the above embodiments within the scope of the present disclosure without departing from its principles and spirit.

Claims

1. A chair back assembly, comprising a chair back frame (1) and a waist massage assembly mounted on the chair back frame (1), and the waist massage assembly comprising a waist massage mechanism (3), characterized in that the waist massage assembly further comprises an adjusting assembly (4) for adjusting the front and rear positions of the waist massage mechanism (3), and the adjusting assembly (4) comprises a first bracket (41), a second bracket (42), a first connecting rod (43), a second connecting rod (44), and a third bracket (45); the second bracket (42) is fixed on the chair back frame (1), and the first bracket (41) is located in front of the second bracket (42); one end of the first connecting rod (43) is hinged to the third bracket (45), the other end of the first connecting rod (43) is hinged to the first bracket (41), one end of the second connecting rod (44) is hinged to the second bracket (42), and the other end of the second connecting rod (44) is slidably connected to the first bracket (41); the first connecting rod (43) and the second connecting rod (44) intersect, and the first connecting rod (43) and the second connecting rod (44) are hinged; the third bracket (45) is slidably connected to the second bracket (42), and the waist massage mechanism (3) is mounted on the first bracket (41); the adjusting assembly (4) further comprises a driving member (5) for driving the third bracket (45) to slide on the second bracket (42); and when the third bracket (45) slides, it can drive the first bracket (41) to move forward and backward by means of the first connecting rod (43) and the second connecting rod (44).

2. The chair back assembly according to claim 1, characterized in that the waist massage mechanism further comprises a housing (2), and through the housing (2) the adjusting assembly (4) is mounted on the chair back frame (1); the housing (2) is provided with a forward-opening movable cavity, and the housing (2) is fixedly connected to the chair back frame (1); and the second bracket (42) is located within the movable cavity, and the second bracket (42) is fixedly connected to the housing (2).

3. The chair back assembly according to claim 2, characterized in that the upper part of the chair back frame (1) and the front end of the housing (2) are respectively covered with a tensioned mesh, a supporting fabric is mounted on the housing (2), and the supporting fabric comprises a heating layer.

4. The chair back assembly according to claim 2, characterized in that the driving member (5) comprises a traction wire (54) for driving the third bracket (45) to slide, one end of the traction wire (54) is connected to the third bracket (45), and the other end of the traction wire (54) is mounted on the housing (2) in a pullable manner.

5. The chair back assembly according to claim 4, characterized in that the driving member (5) further comprises a reset member for driving the third bracket (45) to reset.

6. The chair back assembly according to claim 2, characterized in that the driving member (5) comprises a drive motor, the third bracket (45) is fixed with a second nut, a lead screw is threadedly connected to the second nut, and the drive motor is drivingly connected to the lead screw.

7. The chair back assembly according to claim 2, characterized in that the chair back frame (1) is of a frame structure, and the rear side part of the housing (2) protrudes backward and passes through the middle part of the chair back frame (1).

8. The chair back assembly according to claim 2, characterized in that the chair back assembly further comprises a battery compartment mounted on the housing (2), with a battery arranged in the battery compartment for supplying power to the waist massage mechanism (3), and the battery compartment comprises a battery rack (62) slidably mounted on the housing (2) for accommodating the battery.

9. The chair back assembly according to claim 1, characterized in that the waist massage mechanism (3) comprises massage balls with a heating function.

10. A massage mesh chair, comprising a chair back assembly according to any one of claims 1 to 9.

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