Massage chair capable of adjusting sitting depth

Abstract

The utility model discloses a massage chair capable of adjusting the sitting depth, which comprises a sitting frame, a cushion plate is arranged on the sitting frame, a telescopic frame capable of moving back and forth is arranged on the sitting frame in a sliding manner, and a first driving mechanism used for driving the telescopic frame to move back and forth is connected between the telescopic frame and the sitting frame. The seat cushion plate comprises a front seat cushion plate and a rear seat cushion plate, the front seat cushion plate is arranged on the telescopic frame, and the rear seat cushion plate is arranged on the seat frame. The massage chair capable of adjusting the sitting depth is simple in structure and has better adaptability to users with different leg lengths.

Description

Technical Field

[0001] This utility model relates to the technical field of massage devices, specifically to a massage chair with adjustable seat depth. Background Art

[0002] Massage chairs are a common type of massage equipment, consisting of components such as armrests, seat frame, backrest, base, leg rest, and massage mechanism. The seat frame and backrest are usually connected by a track, and the massage mechanism can move along the track to provide targeted massage to the user's shoulders, neck, waist, back, buttocks, legs, and other parts of the body.

[0003] Currently, the seat depth of massage chairs on the market is fixed and cannot be adjusted. Users with different body types and leg lengths may find that an unsuitable seat depth leads to incorrect massage posture and position, affecting massage comfort and hindering normal rest. To prevent collisions as the massage mechanism moves forward, massage chair tracks typically have Hall effect sensors near the front. When the massage mechanism approaches a collision point, the Hall effect sensor is triggered, controlling the massage mechanism to stop or reverse. Generally, the massage mechanism doesn't move to the end of the track, leaving the front portion underutilized. Furthermore, the fixed travel range of the massage mechanism results in a limited massage area, making it less adaptable to users with different leg lengths. Utility Model Content

[0004] This invention provides a massage chair with adjustable seat depth, which can improve adaptability to users with different leg lengths.

[0005] This utility model provides an adjustable seat depth massage chair, including a seat frame with a seat cushion. A telescopic frame that can move back and forth is slidably mounted on the seat frame. A first drive mechanism is connected between the telescopic frame and the seat frame to drive the telescopic frame to move back and forth. The first drive mechanism can drive the telescopic frame to move back and forth relative to the seat frame, thereby changing the length of the seat frame and providing better comfort for users with different leg lengths. The seat cushion includes a front seat cushion and a rear seat cushion. The front seat cushion is mounted on the telescopic frame, and the rear seat cushion is mounted on the seat frame. The seat cushion increases the contact area with the human body and improves comfort. The seat cushion is designed to include a front seat cushion and a rear seat cushion so as not to affect the extension and retraction of the telescopic frame.

[0006] Furthermore, the rear end of the front seat cushion and the front end of the rear seat cushion form a telescopic connection. This telescopic connection between the front and rear seat cushions prevents gaps from forming between them after the telescopic frame moves forward, increasing the contact area with the body and improving comfort when sitting on them.

[0007] Furthermore, one of the rear end of the front seat cushion and the front end of the rear seat cushion is provided with a groove, and the other is provided with a sliding part that forms a sliding connection with the groove. A limiting mechanism is provided between the groove and the sliding part to prevent the sliding part from coming out of the groove, which can improve the telescopic connection effect and the reliability of the connection between the front seat cushion and the rear seat cushion.

[0008] Furthermore, the upper end of the slide groove is open, and the limiting mechanism includes a through groove disposed on the inner wall of the bottom of the slide groove and a slider disposed on the sliding part. The slider and the through groove form a sliding and limiting engagement, so that the slider can only slide between the front and rear ends of the through groove. The slider and the lower edge of the through groove form a limiting engagement to prevent the slider from coming off the through groove upward. In the forward and backward direction of the telescopic movement, the end point of the through groove can limit the slider, preventing the sliding part from coming off the slide groove forward. The open design at the upper end of the slide groove facilitates the installation of the sliding part into the slide groove. The limiting engagement between the slider and the lower edge of the through groove can also prevent the sliding part from coming off the upper part of the slide groove upward, improving the reliability of the connection.

[0009] Furthermore, the slider includes a rod that slides in conjunction with the through groove and a limiting part fixed to the lower end of the rod. The upper end of the rod is connected and fixed to the sliding part. The slider has a simple structure and is easy to install. The rod of the slider can be connected and fixed upward through the through groove and the sliding part.

[0010] Furthermore, the seat frame has an inverted U-shaped structure, including two sides and a bottom connected between the two sides, forming an accommodating space between the two sides and the bottom. The telescopic frame includes a U-shaped frame, and the rear end of the U-shaped frame includes two side supports and a bottom support. This structural design of the telescopic frame has good structural strength. The two side supports are slidably connected to the two sides of the seat frame, and the bottom support is slidably connected to the bottom of the seat frame, improving the reliability of the connection at the sliding point. The first drive mechanism is set in the accommodating space and is connected to the bottom of the seat frame and the U-shaped frame, making the overall structure more compact.

[0011] Furthermore, the device includes a backrest connected to the seat frame. The seat cushions are arranged on both sides of the seat frame, and the backrests are also equipped with backrests on both sides to improve user comfort. A track is provided between the seat frame and the backrest, and a massage mechanism that can travel between the seat frame and the backrest is mounted on the track. The middle area of ​​the seat cushions on both sides of the seat frame and the backrests on both sides of the backrest facilitates the movement of the massage mechanism. The front seat cushion includes a crossbar, which also improves user comfort when sitting on the telescopic frame. The crossbar is located in front of the movement path of the massage mechanism. A first sensor is provided between the track and the massage mechanism to sense when the massage mechanism reaches the front end of the track. A second sensor is provided between the crossbar and the massage mechanism to sense when the massage mechanism approaches or collides with the crossbeam.

[0012] When the telescopic frame is extended, the crossbar is in the forward position. The first sensor triggers before the second sensor. In conjunction with the first sensor, the massage mechanism can move forward along the track to the front edge. This avoids the massage mechanism being unable to move forward due to collisions with the front seat or telescopic frame, thus increasing the massage range, improving adaptability to users with different leg lengths, and maximizing track utilization. When the telescopic frame is retracted, the crossbar is in the rear position. The second sensor triggers before the first sensor. In conjunction with the second sensor, when the massage mechanism moves forward and approaches or collides with the crossbeam, it is detected by the second sensor, allowing the massage mechanism to stop or retract. This design maximizes the massage mechanism's travel range, which adapts automatically with the extension and retraction of the telescopic frame, further enhancing adaptability to users with different leg lengths.

[0013] Furthermore, the device includes a leg and foot massager rotatably mounted on a telescopic frame. A second drive mechanism is provided between the leg and foot massager and the telescopic frame to drive the leg and foot massager to tilt and rotate. The leg and foot massager is used to massage the user's calves and feet. The second drive mechanism enables the leg and foot massager to tilt and rotate, allowing adjustment of the user's sitting posture. Mounted on the telescopic frame, it moves synchronously with the forward and backward movement of the frame without affecting the tilting and rotation of the leg and foot massager. Attached Figure Description

[0014] Figure 1 This is a structural diagram of an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the telescopic frame in the retracted state according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the telescopic frame in the extended state according to an embodiment of the present invention;

[0017] Figure 4 This is an exploded view of the seat frame and telescopic frame of an embodiment of this utility model;

[0018] Figure 5 This is a structural diagram of the telescopic frame according to an embodiment of the present utility model;

[0019] Figure 6 This is a schematic diagram illustrating the connection between the front seat cushion and the rear seat cushion in an embodiment of this utility model. Figure 1 ;

[0020] Figure 7 This is a schematic diagram illustrating the connection between the front seat cushion and the rear seat cushion in an embodiment of this utility model. Figure 2 ;

[0021] Figure 8 This is a structural diagram of the seat frame according to an embodiment of the present utility model. Detailed Implementation

[0022] An embodiment of this utility model is a massage chair with adjustable seat depth, for example... Figure 1-8 As shown: The device includes a seat frame 11 and a backrest 12 connected to the seat frame 11. A seat cushion 21 is provided on both sides of the seat frame 11. Backrest cushions 22 are provided on both sides of the backrest 12 to improve user comfort. A track 13 is provided between the seat frame 11 and the backrest 12. A massage mechanism 4 is mounted on the track 13, allowing it to move between the seat frame 11 and the backrest 12. The area between the seat cushions 21 on both sides of the seat frame 11 and the backrest cushions 22 on both sides of the backrest 12 facilitates massage. The movement of the mechanism 4 involves a telescopic frame 14 slidably mounted on the seat frame 11, capable of moving back and forth. A first drive mechanism 31, employing an electric actuator, connects the telescopic frame 14 to the seat frame 11, driving its forward and backward movement. This mechanism allows the telescopic frame 14 to move relative to the seat frame 11, thus altering the length of the seat and providing better comfort for users of different leg lengths. The two different telescopic states are described below. Figure 2 , 3 As shown.

[0023] like Figure 6 , 7 As shown, the seat cushion 21 includes a front seat cushion 211 and a rear seat cushion 212. The front seat cushion 211 is mounted on the telescopic frame 14, and the rear seat cushion 212 is mounted on the seat frame 11. The seat cushion 21 increases the contact area with the human body and improves comfort. The seat cushion 21 is designed to include a front seat cushion 211 and a rear seat cushion 212 so as not to affect the telescopic movement of the telescopic frame.

[0024] The rear end of the front seat cushion 211 and the front end of the rear seat cushion 212 are telescopically connected. The telescopic connection between the front seat cushion 211 and the rear seat cushion 212 prevents gaps from forming between the front seat cushion 211 and the rear seat cushion 212 after the telescopic frame 14 moves forward, increases the contact area with the human body, and improves the comfort when sitting on it.

[0025] The rear seat cushion 212 has a groove 2121 at its front end, and the front seat cushion 211 has a sliding part 2111 at its rear end that slides in conjunction with the groove 2121. A limiting mechanism is provided between the groove 2121 and the sliding part 2111 to prevent the sliding part 2111 from dislodging from the groove 2121, thereby improving the telescopic connection effect and reliability of the front seat cushion 211 and the rear seat cushion 212. It should be noted that in other embodiments, the groove may be located on the front seat cushion 211 and the sliding part may be located on the rear seat cushion 212.

[0026] The upper end of the slide groove 2121 is open. The limiting mechanism includes a through groove 2122 disposed on the inner bottom wall of the slide groove 2121 and a slider 23 disposed on the sliding part 2111. The slider 23 and the through groove 2122 form a sliding and limiting engagement, so that the slider 23 can only slide between the front and rear ends of the through groove 2122. The slider 23 and the lower edge of the through groove 2122 form a limiting engagement to prevent the slider from coming off the through groove 2122 upward. In the forward and backward direction of the telescopic movement, the end point of the through groove 2122 can limit the slider 23, which can prevent the sliding part 2111 from coming off the slide groove 2121 forward. The open design at the upper end of the slide groove 2121 facilitates the installation of the sliding part 2111 into the slide groove 2121. The limiting engagement between the slider 23 and the lower edge of the through groove 2122 can also prevent the sliding part 2111 from coming off the upper part of the slide groove 2121 upward, improving the reliability of the connection.

[0027] The slider 23 includes a rod that slides in conjunction with the through groove 2122 and a limiting part fixed to the lower end of the rod. The upper end of the rod is connected and fixed to the sliding part 2111, which can be fixed by screw connection. The diameter of the limiting part is larger than the width of the through groove 2122 and will not pass through the through groove 2122. The slider 23 has a simple structure and is easy to install. The rod of the slider 23 can be connected and fixed upward through the through groove 2122 and the sliding part 2111.

[0028] The front seat cushion 211 includes a crossbar 2112, which also improves the comfort of the user when sitting on the telescopic frame 14. The crossbar 2112 is located in front of the travel path of the massage mechanism 4. A first sensor is provided between the track 13 and the massage mechanism 4 to sense when the massage mechanism 4 travels to the front end of the track 13. A second sensor is provided between the crossbar 2112 and the massage mechanism 4 to sense when the massage mechanism 4 travels to a position close to or collides with the crossbeam 2112.

[0029] When the telescopic frame 14 is extended, the crossbar 2112 is in a forward position. The first sensor will trigger before the second sensor. Through cooperation with the first sensor, the massage mechanism 4 can move forward along the track 13 to the front end of the track 13. This avoids the massage mechanism 4 being unable to move forward due to collisions with the crossbar 2112 or the telescopic frame 14, thereby increasing the massage range of the massage mechanism 4, improving adaptability to users with different leg lengths, and increasing the utilization of the track 13. When the telescopic frame 14 is extended, the crossbar 2112 is in a forward position. The first sensor will trigger before the second sensor. When the massage mechanism 4 is in the retracted state, the crossbar 2112 is in a rearward position. The second sensor will be triggered before the first sensor. Through cooperation with the second sensor, the massage mechanism 4 is sensed by the second sensor when it moves forward and approaches or collides with the crossbar 2112. This allows the massage mechanism 4 to stop moving or retract. This design maximizes the travel range of the massage mechanism 4, which can adapt automatically to the extension and retraction of the telescopic frame 14, improving adaptability to users with different leg lengths. The sensor can be a Hall sensor, a proximity switch, or a photoelectric sensor.

[0030] like Figures 1 to 3 as well as Figure 8 As shown, a leg and foot massager 5 is rotatably mounted on the telescopic frame 14. A second drive mechanism 32, which is used to drive the leg and foot massager 5 to tilt and rotate, is provided between the leg and foot massager 5 and the telescopic frame 14. The second drive mechanism 32 is an electric actuator. The leg and foot massager 5 is used to massage the user's legs and feet. The second drive mechanism 32 can drive the leg and foot massager 5 to tilt and rotate, which can adjust the user's sitting posture and provide support for the legs and feet. It is mounted on the telescopic frame 14 and can move synchronously with the telescopic frame 14 as it moves back and forth. Furthermore, the leg and foot massager 5 and the seat frame 11 do not affect the tilting and rotation of the leg and foot massager 5.

[0031] The seat frame 11 has an inverted U-shaped structure, including two side sections 111 and a bottom section 112 connected between the two side sections 111. An accommodating space is formed between the two side sections 111 and the bottom section 112. The telescopic frame 14 includes a U-shaped frame section 141. The rear end of the U-shaped frame section 141 includes two side support sections 142 and a bottom support section 143. This structural design of the telescopic frame 14 provides good structural strength. The two side support sections 142 are slidably connected to the two side sections 111 of the seat frame 11, respectively. The bottom support section 142... 43 forms a sliding connection with the bottom 112 of the seat frame 11, improving the connection reliability at the sliding point. In this embodiment, multiple sliding sleeves 15 are provided on both sides 111 and the bottom 112 of the seat frame 11. The side support 142 and bottom support 143 of the telescopic frame 14 each include two vertical rods. The vertical rods and the sliding sleeves 15 form a sliding connection. The first drive mechanism 31 is disposed in the accommodating space. The first drive mechanism 31 is connected and cooperates with the bottom 112 and the U-shaped frame 141 of the seat frame 11, making the overall structure more compact.

[0032] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A massage chair with adjustable seat depth, comprising a seat frame, a seat cushion plate being arranged on the seat frame, characterized in that: A telescopic frame capable of moving forward and backward is slidably arranged on the seat frame, a first driving mechanism for driving the telescopic frame to move forward and backward is connected between the telescopic frame and the seat frame, the seat cushion plate includes a front seat cushion plate and a rear seat cushion plate, the front seat cushion plate is arranged on the telescopic frame, and the rear seat cushion plate is arranged on the seat frame.

2. The massage chair with adjustable seat depth according to claim 1, characterized in that: The rear end of the front cushion plate and the front end of the rear cushion plate form a telescopic connection.

3. The massage chair with adjustable seat depth according to claim 2, characterized in that: One of the rear end of the front seat cushion plate and the front end of the rear seat cushion plate is provided with a slide groove, and the other is provided with a sliding part that forms a sliding connection with the slide groove. A limiting mechanism that can prevent the sliding part from escaping from the slide groove is provided between the slide groove and the sliding part.

4. The massage chair with adjustable seat depth according to claim 3, characterized in that: The upper end of the slide groove is open, and the limiting mechanism includes a through groove arranged on the bottom inner wall of the slide groove and a slider arranged on the sliding part. The slider and the through groove form a sliding and limiting fit, so that the slider can only slide between the front and rear ends of the through groove, and the slider and the lower edge of the through groove form a limiting fit to prevent the slider from escaping upward from the through groove.

5. The massage chair with adjustable seat depth according to claim 4, characterized in that: The slide block comprises a rod portion that slides in cooperation with the through slot, a limiting portion that is fixed to the lower end of the rod portion, and an upper end of the rod portion that is connected and fixed in cooperation with the sliding portion.

6. The massage chair with adjustable seat depth according to claim 1, characterized in that: The seat frame is an inverted U-shaped structure, which includes two side parts and a bottom connected between the two side parts, and an accommodating space is formed between the two side parts and the bottom. The telescopic frame includes a U-shaped frame part, and the rear end of the U-shaped frame part includes two side support parts and a bottom support part. The two side support parts are respectively slidably connected with the two side parts of the seat frame, and the one bottom support part is slidably connected with the bottom of the seat frame. The first driving mechanism is arranged in the accommodating space, and the first driving mechanism is respectively connected and cooperated with the bottom of the seat frame and the U-shaped frame part.

7. The massage chair with adjustable seat depth according to claim 1, characterized in that: It includes a backrest connected to a seat frame, the seat cushion plate is arranged on both sides of the seat frame, backrest plates are arranged on both sides of the backrest, a track is arranged between the seat frame and the backrest, a massage movement capable of moving between the seat frame and the backrest is arranged on the track, the front seat cushion plate includes a cross block portion, the cross block portion is arranged in front of the moving path of the massage movement, a first sensor for sensing when the massage movement moves to the front end of the track is arranged between the track and the massage movement, and a second sensor for sensing when the massage movement moves to a position close to or collides with the cross beam portion is arranged between the cross block portion and the massage movement.

8. The massage chair with adjustable seat depth according to claim 1, characterized in that: The utility model comprises a leg and foot massager which is rotatably arranged on a telescopic frame, and a second driving mechanism for driving the leg and foot massager to tilt and rotate is arranged between the leg and foot massager and the telescopic frame.

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