Chair frame mechanism and massage chair

Abstract

A chair frame mechanism and a massage chair, comprising a fixed frame, two sides of the fixed frame are provided with side plate mounting frames and roller parts, the side plate mounting frames comprise upper parts and lower parts, one of the upper parts and the lower parts is slidingly connected to the fixed frame, and the other is rollingly matched with the roller part, a fixing shaft of the roller part is fixed to the fixed frame, the roller part can rotate around an axis thereof, and each side plate mounting frame realizes forward and backward sliding relative to the fixed frame through manual or driving means. Before sitting, a user can manually or electrically adjust the side plate to move it to the rear of the chair frame, so that at least part of positions on both sides of the seat of the chair frame are exposed, thereby providing the user with more abundant sitting space. Compared with the fixed and immovable side plate, the movable design solves the problem of inconvenient sitting of the user, improves the use experience of the user, and reduces the risk of bumping caused by obstacle sitting of the user. The setting of the roller part reduces the friction force, so that the sliding of the side plate mounting frame is more smooth and flexible.

Description

Technical Field

[0001] This utility model relates to the field of massage device technology, and in particular to a chair frame mechanism and a massage chair. Background Technology

[0002] Massage chairs, a common type of massage device, consist of a chair frame and side panels installed on both sides of the frame. These side panels are usually fixed and cannot be moved. However, some massage chairs are equipped with a front-mounted SPA tub or footrest. In these cases, the sides of the seat area are blocked by the side panels, and the front is occupied by the SPA tub or footrest, resulting in insufficient seating space. This causes inconvenience for users, affecting their experience and potentially posing a risk of bumping into things. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a chair frame mechanism and a massage chair.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A chair frame mechanism includes a fixed frame, on both sides of which are mounted side panel mounting brackets and roller portions. Each side panel mounting bracket includes an upper part and a lower part, one of which is slidably connected to the fixed frame, and the other is rollably engaged with the roller portion. The fixed shaft of the roller portion is fixed to the fixed frame, and the roller portion is rotatable about its axis. Each side panel mounting bracket can slide back and forth relative to the fixed frame by manual operation or a driving device.

[0006] Furthermore, the driving device includes a drive motor mounted on the fixed frame, the drive motor being driven by a drive horizontal shaft, the drive horizontal shaft being able to rotate along its axial direction under the action of the drive motor; it also includes a transfer module, the transfer module being able to convert the rotational motion of the drive horizontal shaft into the linear reciprocating motion of the side plate mounting frame, thereby driving the side plate mounting frame to slide back and forth.

[0007] Furthermore, a worm gear housing assembly is provided between the drive motor and the drive horizontal shaft. The input end of the worm gear housing assembly is connected to the output end of the drive motor, and the output end of the worm gear housing assembly is coaxially connected to the drive horizontal shaft.

[0008] Furthermore, the transfer module includes a gear and a rack that drive each other. The gear is installed at both ends of the drive shaft in the axial direction, and the rack is parallel to and fixedly connected to the side plate mounting bracket.

[0009] Furthermore, a shock-absorbing and buffering connection assembly is provided between the rack and the side plate mounting bracket.

[0010] Furthermore, the lower part is rolled with the roller portion, which is at least one set of vertically distributed grooved wheels. Each grooved wheel includes a roller body and the fixed shaft, and the roller body is located outside the side plate mounting bracket.

[0011] Furthermore, the fixed shaft can abut against the inner sides of both ends of the side plate mounting bracket along the sliding direction to prevent the side plate mounting bracket from sliding excessively.

[0012] Furthermore, it also includes slide rail devices installed on both sides of the fixed frame, and the upper part of each side plate mounting bracket is slidably connected to the fixed frame through the slide rail devices.

[0013] Furthermore, the slide rail device includes a fixed rail and a sliding rail that are slidably connected to each other. The fixed rail is fixedly connected to both sides of the fixed frame, and the sliding rail is fixedly connected to the side plate mounting frame.

[0014] A massage chair includes a backrest frame assembly, a seat cushion frame assembly, and a seat frame assembly connected to each other. Further, the seat cushion frame assembly includes a seat cushion body, a side panel body, and a chair frame mechanism as described above. The seat cushion body is mounted on the top of the fixed frame, and the side panel body is mounted on the outer side of the side panel mounting frame.

[0015] The beneficial effects of this utility model are:

[0016] 1. This utility model proposes a chair frame mechanism that allows users to manually or electrically adjust the side panels before sitting down, moving them towards the rear of the chair frame. This exposes at least a portion of the seat area on both sides of the chair frame, providing users with more ample seating space. Compared to fixed, immovable side panels, this movable design solves the problem of inconvenience for users when sitting down, improves the user experience, and reduces the risk of bumps and knocks caused by obstructed seating. Furthermore, the rollers reduce friction between the side panel mounting bracket and the fixed frame during sliding, making the sliding of the side panel mounting bracket smoother and more flexible. This avoids shaking or jamming caused by poor sliding, improving the user experience when using the chair frame mechanism, distributing the load, and extending the service life of the chair frame mechanism.

[0017] 2. This utility model proposes a chair frame mechanism in which a worm gear housing assembly is provided between the drive motor and the drive horizontal shaft. The worm gear housing assembly effectively reduces the speed of the drive motor and increases the output torque, allowing the drive horizontal shaft to rotate in a more stable and powerful manner. Its torque-increasing effect ensures that the gears have sufficient power to drive the rack and the connected side plate mounting bracket, while the speed-reducing effect makes the entire transmission process smoother, avoiding vibration and impact caused by excessive speed, reducing wear between components, and extending the service life of the equipment.

[0018] 3. The chair frame mechanism proposed in this utility model includes a shock-absorbing and buffering connection component between the rack and the side panel mounting bracket. This component, installed during the forward and backward sliding of the side panel mounting bracket, effectively reduces the impact force between the rack and the side panel mounting bracket, lowers noise caused by vibration, and makes the chair frame mechanism quieter during operation, thus improving the user experience. Simultaneously, it reduces wear on components caused by vibration, extends the service life of the rack and side panel mounting bracket, and ensures the stability and reliability of the entire chair frame mechanism.

[0019] 4. The chair frame mechanism proposed in this utility model has a fixed shaft that abuts against the inner sides of both ends of the side panel mounting bracket along the sliding direction to prevent the side panel mounting bracket from sliding excessively. This structure is equivalent to setting a limiting part to prevent the side panel mounting bracket from exceeding the predetermined range during sliding, ensuring the normal operation of the entire chair frame mechanism. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a chair frame mechanism according to the present invention;

[0022] Figure 2 This is an exploded view of a chair frame mechanism according to the present invention;

[0023] Figure 3 This is a schematic diagram of the drive unit;

[0024] Figure 4 This is an exploded view of the drive unit;

[0025] Figure 5 for Figure 3 A magnified view of part A;

[0026] Figure 6 This is a schematic diagram of the initial state of the massage chair;

[0027] Figure 7 This is a diagram showing the massage chair in the seated position.

[0028] In the diagram, 10 is the chair frame mechanism; 101 is the fixed frame; 102 is the side panel mounting frame; 1021 is the upper part; 1022 is the lower part; 103 is the roller part; 1031 is the fixed shaft; 1032 is the roller body; 104 is the drive device; 1041 is the drive motor; 1042 is the drive horizontal shaft; 1043 is the worm gear box assembly; 10431 is the worm gear body; 10432 is the worm body; 1044 is the gear; 1045 is the rack; 1046 is the fixed box; 105 is the shock absorption and buffer connection assembly; 1051 is the rubber shock absorption washer; 1052 is the bolt; 1053 is the nut; 106 is the slide rail device; 1061 is the fixed rail; 1062 is the sliding rail; 20 is the backrest frame assembly; 30 is the seat cushion frame assembly; 301 is the seat cushion body; 302 is the side panel body; and 40 is the seat frame assembly. Detailed Implementation

[0029] The following is combined Figures 1-7 This utility model will be described in detail.

[0030] A chair frame mechanism 10 includes a fixed frame 101. Side panel mounting brackets 102 and roller portions 103 are mounted on both sides of the fixed frame 101. Each side panel mounting bracket 102 includes an upper part 1021 and a lower part 1022. One part of the upper part 1021 and the lower part 1022 is slidably connected to the fixed frame 101, and the other part is rollably engaged with the roller portion 103. The fixed shaft 1031 of the roller portion 103 is fixed to the fixed frame 101, and the roller portion 103 can rotate around its axis. Each side panel mounting bracket 102 can slide back and forth relative to the fixed frame 101 via manual or a drive device 104. Before sitting down, the user can manually or electrically adjust the side panels to move them towards the rear of the chair frame, thereby exposing at least a portion of the seats on both sides of the chair frame, providing the user with more ample seating space. Compared to fixed, immovable side panels, this movable design solves the problem of inconvenience for users when sitting down, improves the user experience, and reduces the risk of bumping into things due to obstructed seating. Furthermore, the roller section 103 reduces the friction between the side panel mounting bracket 102 and the fixed bracket 101 during sliding, making the sliding of the side panel mounting bracket 102 smoother and more flexible. This avoids shaking or jamming caused by poor sliding, improving the user experience when using the chair frame mechanism 10 and extending its service life. While manual sliding reduces production costs, electric sliding is more convenient to use; both methods have their advantages. The specific electric structure is described below.

[0031] In this embodiment, the driving device 104 includes a driving motor 1041 mounted on the fixed frame 101, and the driving motor 1041 is driven by a driving horizontal shaft 1042. The driving horizontal shaft 1042 can rotate along its axial direction under the action of the driving motor 1041. It also includes a transfer module, which can convert the rotational motion of the driving horizontal shaft 1042 into the linear reciprocating motion of the side plate mounting frame 102, thereby driving the side plate mounting frame 102 to slide back and forth.

[0032] In this embodiment, a worm gear housing assembly 1043 is provided between the drive motor 1041 and the drive horizontal shaft 1042. The input end of the worm gear housing assembly 1043 is connected to the output end of the drive motor 1041, and the output end of the worm gear housing assembly 1043 is coaxially connected to the drive horizontal shaft 1042. Specifically, the output end of the drive motor 1041 is connected to the worm body 10432, and the worm gear body 10431 and the worm body 10432 are helically meshed. The worm gear body 10431 is then rigidly connected and sleeved on the drive horizontal shaft 1042. The rotation of the worm gear body 10431 drives the drive horizontal shaft 1042 to rotate synchronously. The worm gear housing assembly 1043 serves to increase torque, reduce speed, and change direction. It integrates the worm gear body 10431, the worm body 10432, and their supporting structure into a relatively compact housing. This compact structure occupies little space. The worm gear structure has a large transmission ratio, effectively reducing the speed of the drive motor 1041 and increasing the output torque when the motor output speed is high and the torque is low. This allows the drive shaft 1042 to rotate more stably and powerfully. Its torque-increasing effect ensures that the gear 1044 has sufficient power to drive the rack 1045 and the connected side plate mounting bracket 102. The speed-reducing effect makes the entire transmission process smoother, avoiding vibration and impact caused by excessive speed, reducing wear between components, and extending the service life of the equipment. As for the direction-changing function, it can change the direction of the motor's output rotation, allowing power to be transmitted to the drive shaft 1042 in the specific direction required by the equipment, realizing power transmission and mechanical motion conversion in different directions.

[0033] In this embodiment, the transfer module includes a gear 1044 and a rack 1045 that are mutually driven and cooperate with each other. The gear 1044 is installed at both ends of the drive shaft 1042 in the axial direction, and the rack 1045 is parallel to and fixedly connected to the side plate mounting bracket. Specifically, the gear 1044 is installed in the fixed housing 1046, which is fixed to the fixed bracket 101. When the drive shaft 1042 rotates, it drives the gear 1044 to rotate along its own axis, thereby driving the gear 1044 to slide back and forth. In this embodiment, the axial direction of the drive shaft 1042 is perpendicular to the sliding direction of the side plate mounting bracket 102. In other embodiments, the axial direction of the drive shaft 1042 can be set to be parallel to the sliding direction of the side plate mounting bracket 102, and the transfer module is a movable block that is helically driven by the drive shaft 1042. The movable block is fixedly connected to the side plate mounting bracket 102.

[0034] In this embodiment, a shock-absorbing and buffering connection assembly 105 is provided between the rack 1045 and the side plate mounting bracket 102. Specifically, as shown... Figure 5 As shown, the shock-absorbing and buffering connection assembly 105 includes a rubber shock-absorbing washer 1051, a bolt 1052, and a nut 1053. The rubber shock-absorbing washer 1051 consists of a metal outer ring and a rubber inner ring. After the bolt 1052 is tightened, the rubber is compressed. Its placement during the back-and-forth sliding of the side panel mounting bracket 102 effectively reduces the impact force between the rack 1045 and the side panel mounting bracket 102, reducing noise caused by vibration and making the chair frame mechanism 10 quieter during operation, thus improving the user experience. Simultaneously, it reduces wear on components caused by vibration, extends the service life of the rack 1045 and the side panel mounting bracket 102, and ensures the stability and reliability of the entire chair frame mechanism 10.

[0035] In this embodiment, the lower part 1022 is rolled with a roller part 103. The roller part 103 consists of at least one set of vertically distributed grooved wheels. Each grooved wheel includes a roller body 1032 and a fixed shaft 1031. The roller body 1032 is located outside the side plate mounting bracket 102. Specifically, one set consists of two grooved wheels. The lower part 1022 is constrained and slidably engaged with one or more sets of grooved wheels to achieve unidirectional free constraint on the forward and backward movement of the side plate mounting bracket 102. A side plate body 302 is fixedly installed outside the side plate mounting bracket 102. The inner side of the side plate body 302 is provided with a groove adapted to the grooved wheels. When the side plate body 302 and the side plate mounting bracket 102 slide forward and backward, the fixed shaft 1031 of the grooved wheel remains stationary because it is fixed to the fixed bracket 101. The roller body 1032 will rotate around its own axis due to the sliding of the side plate body 302, i.e., roll.

[0036] In this embodiment, the fixed shaft 1031 can abut against the inner sides of both ends of the side panel mounting bracket 102 along the sliding direction to prevent the side panel mounting bracket 102 from sliding excessively. This structure is equivalent to setting a limiting part to prevent the side panel mounting bracket 102 from exceeding the predetermined range during sliding, ensuring the normal operation of the entire chair frame mechanism 10.

[0037] In this embodiment, a slide rail device 106 is also installed on both sides of the fixed frame 101, and the upper part 1021 of each side plate mounting frame 102 is slidably connected to the fixed frame 101 through the slide rail device 106.

[0038] In this embodiment, the slide rail device 106 includes a fixed rail 1061 and a sliding rail 1062 that are slidably connected to each other. The fixed rail 1061 is fixedly connected to both sides of the fixed frame 101, and the sliding rail 1062 is fixedly connected to the side plate mounting frame 102.

[0039] A massage chair includes a backrest frame assembly 20, a seat cushion frame assembly 30, and a seat frame assembly 40 connected to each other. In this embodiment, the seat cushion frame assembly 30 includes a seat cushion body 301, a side panel body 302, and a chair frame mechanism 10 as described above. The seat cushion body 301 is mounted on the top of the fixed frame 101, and the side panel body 302 is mounted on the outer side of the side panel mounting frame 102. The sliding rail 1062, the side panel mounting frame 102, and the side panel body 302 together constitute a side panel sliding assembly. During sliding, these three components slide back and forth, while the fixed frame 101 and the fixed rail 1061 remain stationary.

[0040] The working principle of the chair frame mechanism and massage chair proposed in this utility model is as follows:

[0041] After the drive motor 1041 is powered in both directions, it transmits torque to the worm gear housing assembly 1043 to increase torque and reduce speed, thereby driving the horizontal shaft 1042 to rotate along its own axis. The rotation of the horizontal shaft 1042 drives the gears 1044 at both ends to rotate, and then transmits the torque to the rack 1045. The rack 1045 moves forward or backward, thereby driving the side plate sliding assembly to slide forward or backward.

[0042] The sliding mechanism described in this article refers to the direction closer to the user and the direction further away from the user. The side panel mounting bracket 102 is slid backward to create seating space by using buttons electrically connected to the electronic control unit. Figure 7 As shown; there are three ways to achieve reset by sliding the side panel mounting bracket 102 forward. One is to control it via buttons; another is to install a pressure sensor or other sensor at a suitable position on the massage chair. After the user sits down, the sensor transmits a signal to the control module, which then drives the motor 1041 to make the side panel mounting bracket 102 slide forward, eventually returning to its initial position. Figure 6As shown; thirdly, the time parameter is preset in the control module. After the preset time is reached, the forward and reverse motors are automatically started, driving the side plate mounting bracket 102 to slide forward and return to the initial position.

[0043] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A chair frame mechanism, characterized in that, The device includes a fixed frame, on both sides of which are mounted side plate mounting brackets and rollers. Each side plate mounting bracket includes an upper part and a lower part, one of which is slidably connected to the fixed frame, and the other is rollably engaged with the rollers. The fixed shaft of the rollers is fixed to the fixed frame, and the rollers can rotate around their axis. Each side plate mounting bracket can slide back and forth relative to the fixed frame by manual operation or a driving device.

2. The chair frame mechanism as described in claim 1, characterized in that, The driving device includes a drive motor mounted on the fixed frame, the drive motor being driven by a drive horizontal shaft, the drive horizontal shaft being able to rotate along its axial direction under the action of the drive motor; it also includes a transfer module, the transfer module being able to convert the rotational motion of the drive horizontal shaft into the linear reciprocating motion of the side plate mounting frame, thereby driving the side plate mounting frame to slide back and forth.

3. A chair frame mechanism as described in claim 2, characterized in that, A worm gear housing assembly is provided between the drive motor and the drive horizontal shaft. The input end of the worm gear housing assembly is connected to the output end of the drive motor, and the output end of the worm gear housing assembly is coaxially connected to the drive horizontal shaft.

4. A chair frame mechanism as described in claim 3, characterized in that, The transfer module includes a gear and a rack that drive each other. The gear is installed at both ends of the drive shaft in the axial direction, and the rack is parallel to and fixedly connected to the side plate mounting bracket.

5. A chair frame mechanism as described in claim 4, characterized in that, A shock-absorbing and buffering connection assembly is provided between the rack and the side plate mounting bracket.

6. A chair frame mechanism as described in any one of claims 1-5, characterized in that, The lower part is rolled with the roller part, which is at least one set of vertically distributed grooved wheels. Each grooved wheel includes a roller body and the fixed shaft. The roller body is located outside the side plate mounting bracket.

7. A chair frame mechanism as described in claim 6, characterized in that, The fixed shaft can abut against the inner sides of both ends of the side plate mounting bracket along the sliding direction to prevent the side plate mounting bracket from sliding excessively.

8. A chair frame mechanism as described in claim 7, characterized in that, It also includes slide rail devices installed on both sides of the fixed frame, and the upper part of each side plate mounting bracket is slidably connected to the fixed frame through the slide rail devices.

9. A chair frame mechanism as described in claim 8, characterized in that, The slide rail device includes a fixed rail and a sliding rail that are slidably connected to each other. The fixed rail is fixedly connected to both sides of the fixed frame, and the sliding rail is fixedly connected to the side plate mounting frame.

10. A massage chair, comprising a backrest frame assembly, a seat cushion frame assembly, and a seat frame assembly connected to each other, characterized in that, The seat cushion frame assembly includes a seat cushion body, a side panel body, and a chair frame mechanism as described in any one of claims 1-9, wherein the seat cushion body is mounted on the top of the fixing frame, and the side panel body is mounted on the outer side of the side panel mounting frame.

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