Massage chair frame

Abstract

The invention relates to a massage chair frame. A massage back frame device comprises a back frame body, a supporting frame and a first driving device, the hinging position between the back frame body and the supporting frame forms a first hinging point, the hinging position between the first driving device and the supporting frame forms a second hinging point, and the hinging position between the first driving device and the back frame body forms a third hinging point. The distance between the first hinge point and the second hinge point is not smaller than 40% of the distance between the second hinge point and the third hinge point after the back frame body topples, and the included angle between the connecting line between the first hinge point and the second hinge point and the connecting line between the second hinge point and the third hinge point is smaller than or equal to 90 degrees, so that the back frame stably moves in the rising and falling process. Therefore, shaking of the back frame in the rising and falling process is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of massage chairs, and in particular to a massage chair frame. Background Art

[0002] In today's market, many massage chairs are equipped with adjustable back frames that can flexibly switch between tilted and upright states. However, in actual use, users often find that the back frame is prone to varying degrees of shaking during the lifting process. This unstable operating state not only affects the overall performance of the massage chair, but also greatly reduces the customer's experience. Customers may feel uncomfortable during use. Therefore, how to improve the lifting mechanism of the back frame and ensure its stability during operation has become an urgent problem for massage chair manufacturers. Summary of the invention

[0003] In view of the shortcomings of the background technology, an object of the present invention is to provide a massage chair frame.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A massage chair frame, comprising a base, a support frame and a back frame body rotatably connected to the support frame, wherein the support frame is horizontally rotatably connected to the base, and the back frame body is an L-shaped structure corresponding to the back and buttocks of a user in a sitting state;

[0006] The support frame is provided with a support rod in a direction away from the base, and the middle part of the back frame body is hinged to the top of the support rod, so that the massage movement on the back frame body can pass through the middle part of the back frame body;

[0007] It also includes a first driving device, wherein a fixed end of the first driving device is hinged to the support frame, and an output end of the first driving device is hinged to the back frame body;

[0008] The front end of the back frame body is hinged with a calf part, and also includes a second driving device, the fixed end of the second driving device is hinged to the back frame body, the output end of the second driving device is connected to the calf part, and the second driving device can push the calf part to rotate to a position below the back frame body or away from the back frame body.

[0009] Furthermore, the hinge between the back frame body and the support rod constitutes a first hinge point, the hinge between the first drive device and the support frame constitutes a second hinge point, and the hinge between the first drive device and the back frame body constitutes a third hinge point. The first hinge point, the second hinge point and the third hinge point must meet the following requirements: the distance between the first hinge point and the second hinge point is not less than 40% of the distance between the second hinge point and the third hinge point after the back frame body is tilted, and the angle between the line between the first hinge point and the second hinge point and the line between the second hinge point and the third hinge point is ≤90°.

[0010] Furthermore, a foot massage mechanism is provided on the calf portion, and the foot massage mechanism can accommodate the user's feet. The second driving device can drive the calf portion to rotate, so that the foot massage mechanism is located below the back frame body.

[0011] Furthermore, a first connecting seat and a second connecting seat are provided on the back of the back frame body, the output end of the first driving device is hinged to the first connecting seat, and the output end of the second driving device is hinged to the second connecting seat, and the first connecting seat and the second connecting seat are both arched structures so that the massage movement can pass through.

[0012] Furthermore, it also includes a rocker rod and a connecting rod device, one end of the connecting rod device is hinged to the rocker rod, and the other end of the connecting rod device is hinged to the calf part; the connecting rod device includes a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, one end of the first connecting rod is hinged to the other end of the rocker rod, and the other end of the first connecting rod is hinged to the middle part of the second connecting rod; one end of the second connecting rod is hinged to the back frame body, the other end of the second connecting rod is hinged to one end of the third connecting rod, the other end of the third connecting rod is hinged to one end of the fourth connecting rod, and the other end of the fourth connecting rod is hinged to the back frame body coaxially with the calf part.

[0013] Furthermore, it also includes a first elastic member, one end of the first elastic member is connected to the second connecting rod, and the other end of the first elastic member is connected to the calf.

[0014] Furthermore, the fourth connecting rod is magnetically attracted to the calf part, and when the calf part is reset, the fourth connecting rod is pulled back by the elastic force of the first elastic member and the deadweight of the calf part.

[0015] Furthermore, the connecting rod device includes a fifth connecting rod, one end of which is provided with a slide groove, the slide groove is slidably adapted to be fitted with a pin provided on the swing rod, and the other end of the fifth connecting rod is hinged to the calf part.

[0016] Furthermore, it also includes a second elastic member, and two ends of the second elastic member are respectively connected to the fifth connecting rod and the rocker arm.

[0017] Further, the calf part includes an upper calf frame and a lower calf frame, the upper calf frame is provided with a transition portion and a push portion, one end of the upper calf frame is hinged to the back frame body, the lower calf frame is telescopically adapted to the upper calf frame and extends out or retracts from the other end of the upper calf frame, and a reset member is provided between the upper calf frame and the lower calf frame, the reset member is used to retract the lower calf frame to the upper calf frame;

[0018] It also includes a connecting belt, one end of which is connected to the swing rod, and the other end of which is connected to the lower calf frame after passing through the transition part and the pushing part. The connecting belt is used to pull the lower calf frame out of the upper calf frame.

[0019] The beneficial effects of the present invention are:

[0020] 1. A massage chair frame proposed in the present invention comprises a back frame body, a support frame and a first drive device, wherein the hinge between the back frame body and the support frame constitutes a first hinge point, the hinge between the first drive device and the support frame constitutes a second hinge point, the hinge between the first drive device and the back frame body constitutes a third hinge point, the distance between the first hinge point and the second hinge point is not less than 40% of the distance between the second hinge point and the third hinge point after the back frame body is tilted, and the angle between the line between the first hinge point and the second hinge point and the line between the second hinge point and the third hinge point is ≤90°, so that the back frame moves smoothly during the lifting and tilting process, thereby reducing the shaking of the back frame during the lifting and tilting process.

[0021] 2. The massage chair frame proposed by the present invention has a rocker arm and a calf part hinged at the front end of the back frame body, and also includes a connecting rod device, one end of the connecting rod device is hinged to the rocker arm, and the other end of the connecting rod device is hinged to the calf part; it also includes a second driving device for driving the rocker arm to push the calf part, and the calf part can be stored to a negative angle position through the second driving device.

[0022] 3. The massage chair frame proposed by the present invention has a connecting rod device including a single-connecting rod solution and a multi-connecting rod solution to meet the needs of different usage conditions.

[0023] 4. The massage chair frame proposed by the present invention has an elastic part connected between the connecting rod device and the calf part. The connecting rod device can pull the calf part downward during the storage process so that the calf part is close to the front side of the back frame. On the one hand, the compactness of the overall structure is further improved, and on the other hand, the gap between the calf part and the back frame during the storage process is reduced as much as possible to prevent hands from being pinched. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 is a schematic diagram of a first embodiment of a massage back support device of the present invention;

[0026] Figure 2 This is a schematic diagram of a massage back frame device according to Embodiment 1 of the present invention in an upright state;

[0027] Figure 3 This is a schematic diagram of a massage back frame device according to Embodiment 1 of the present invention in a tilted state;

[0028] Figure 4 An exploded view of a massage back support device according to a first embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of a back frame of a massage back frame device according to a second embodiment of the present invention in an upright state;

[0030] Figure 6 This is a schematic diagram of a back frame of a massage back frame device according to Embodiment 2 of the present invention in a tilted state;

[0031] Figure 7 It is an exploded schematic diagram of a second embodiment of a massage back support device of the present invention;

[0032] In the figure, 10, back frame body; 20, swing rod; 201, latch; 30, calf part; 301, upper calf frame; 302, lower calf frame; 401, first connecting rod; 402, second connecting rod; 403, third connecting rod; 404, fourth connecting rod; 405, fifth connecting rod; 4051, slide groove; 50, connecting belt; 601, first connection point; 602, second connection point; 603, push part; 604, transition part; 70, support frame; 801, first driving device; 802, second driving device; 901, first elastic member; 902, second elastic member; 1001, first connecting seat; 1002, second connecting seat; 110, base; 120, rotating shaft; 1301, first hinge point; 1302, second hinge point; 1303, third hinge point. DETAILED DESCRIPTION

[0033] Embodiment 1

[0034] Combine the following Figure 1-Figure 4 The present invention is described in detail.

[0035] A massage chair frame, comprising a base 110, a support frame 70 and a back frame body 10 rotatably connected to the support frame 70, the support frame 70 being horizontally rotatably connected to the base 110, and the back frame body 10 being an L-shaped structure corresponding to the back and buttocks of a user in a sitting state;

[0036] The support frame 70 is provided with a support rod in a direction away from the base 110, and the middle part of the back frame body 10 is hinged to the top of the support rod, so that the massage movement on the back frame body 10 can pass through the middle part of the back frame body 10;

[0037] It also includes a first driving device 801, a fixed end of the first driving device 801 is hinged to the support frame 70, and an output end of the first driving device 801 is hinged to the back frame body 10;

[0038] The front end of the back frame body 10 is hinged with the calf part 30, and also includes a second driving device 802. The fixed end of the second driving device 802 is hinged to the back frame body 10, and the output end of the second driving device 802 is connected to the calf part 30. The second driving device 802 can push the calf part 30 to rotate to the bottom of the back frame body 10 or away from the back frame body 10.

[0039] In this embodiment, Figure 3 As shown, the hinge between the back frame body 10 and the support rod constitutes a first hinge point 1301, the hinge between the first drive device 801 and the support frame 70 constitutes a second hinge point 1302, and the hinge between the first drive device 801 and the back frame body 10 constitutes a third hinge point 1303. The first hinge point 1301, the second hinge point 1302 and the third hinge point 1303 must meet the following conditions:

[0040] The distance L1 between the first hinge point 1301 and the second hinge point 1302 is not less than 40% of the distance L2 between the second hinge point 1302 and the third hinge point 1303 after the back frame body 10 is tilted, that is, L1≥0.4L2, and the angle α between the line between the first hinge point 1301 and the second hinge point 1302 and the line between the second hinge point 1302 and the third hinge point 1303 is ≤90°, so that the back frame body 10 moves smoothly during the lifting and tilting process, thereby reducing the shaking of the back frame body 10 during the lifting and tilting process. At the same time, the fixed position of the rotating shaft 120 of the base 110 is within the vertical axis range of the center of gravity position of the back frame body 10 during the lifting and tilting process, and the chair frame is lifted and tilted smoothly, solving the shaking problem.

[0041] In this embodiment, a foot massage mechanism is provided on the calf portion 30 , and the foot massage mechanism can accommodate the user's feet. The second driving device 802 can push the calf portion 30 to rotate, so that the foot massage mechanism is located below the back frame body 10 .

[0042] In this embodiment, a first connecting seat 1001 and a second connecting seat 1002 are provided on the back of the back frame body 10, the output end of the first driving device 801 is hinged to the first connecting seat 1001, and the output end of the second driving device 802 is hinged to the second connecting seat 1002. The first connecting seat 1001 and the second connecting seat 1002 are both arched structures so that the massage movement can pass through.

[0043] In this embodiment, a swing rod and a connecting rod device are also included. One end of the connecting rod device is hinged to the swing rod 20, and the other end of the connecting rod device is hinged to the lower leg portion 30. The dotted lines in the figure represent the connection relationship between the various components of the connecting rod device, such as Figure 4 As shown, the connecting rod device includes a first connecting rod 401, a second connecting rod 402, a third connecting rod 403 and a fourth connecting rod 404, one end of the first connecting rod 401 is hinged to the other end of the swing rod 20, and the other end of the first connecting rod 401 is hinged to the middle part of the second connecting rod 402; one end of the second connecting rod 402 is hinged to the back frame body 10, the other end of the second connecting rod 402 is hinged to one end of the third connecting rod 403, the other end of the third connecting rod 403 is hinged to one end of the fourth connecting rod 404, the other end of the fourth connecting rod 404 is coaxially hinged to the back frame body 10 with the calf part 30, and the fourth connecting rod 404 is connected to the calf part 30, further, the fourth connecting rod 404 is connected to the calf part 30 by magnetism, welding or fasteners, when the calf part 30 is reset, the fourth connecting rod 404 is pulled back by the elastic force of the first elastic member 901 and the self-weight of the calf part 30.

[0044] In this embodiment, a first elastic member 901 is further included. One end of the first elastic member 901 is connected to the second connecting rod 402, specifically, to the hinge between the second connecting rod 402 and the third connecting rod 403. The other end of the first elastic member 901 is connected to the calf portion 30. By utilizing the elastic force of the elastic member, when the calf portion 30 is turned down, the calf portion 30 is pulled so that the calf portion 30 is as close to the front side of the seat frame as possible. On the one hand, the compactness of the overall structure is further improved. On the other hand, the gap between the calf frame in the folded state and the seat frame is reduced as much as possible to prevent hands from being pinched.

[0045] In this embodiment, the calf part 30 includes an upper calf frame 301 and a lower calf frame 302, the upper calf frame 301 is provided with a pushing portion 603 and a transition portion 604, one end of the upper calf frame 301 is hinged to the back frame body 10, the lower calf frame 302 can be telescopically adapted to the upper calf frame 301 and extended or retracted from the other end of the upper calf frame 301, and a reset member is provided between the upper calf frame 301 and the lower calf frame 302, the reset member is used to retract the lower calf frame 302 to the upper calf frame 301; it also includes a connecting belt 50, one end of which is connected to the swing rod 20, and the other end is connected to the lower calf frame 302 after bypassing the pushing portion 603 and the transition portion 604, the connecting belt 50 is used to pull the lower calf frame 302 out of the upper calf frame 301.

[0046] In this embodiment, the reset member is a tension spring, one end of which is connected to the upper calf frame 301, and the other end is connected to the lower calf frame 302. The swing rod 20 is provided with a first connection 601, and the lower calf frame 302 is provided with a second connection 602 at one end close to the back frame body 10. One end of the connecting belt 50 is connected to the first connection 601, and the other end of the connecting belt 50 is connected to the second connection 602 after passing through the pushing portion 603 and 0. The upper calf frame 301 is provided with a pushing portion 603 at one end away from the back frame body 10, and the pushing portion 603 is composed of a rotating shaft 120 to reduce the noise generated when the connecting belt 50 is pushed.

[0047] In the initial state, the calf part 30 is not lifted, the distance between the pushing part 603 and the swing rod 20 is relatively close, and the lower calf frame 302 is retracted in the upper calf frame 301 under the restoring force of the restoring member; the first driving device 801 is started to extend its output end, thereby pushing the calf part 30 to lift, and the distance between the pushing part 603 and the swing rod 20 gradually increases, so that the force of the pushing part 603 on the connecting belt 50 is greater than the restoring force, so that the other end of the connecting belt 50 pulls the lower calf frame 302 out of the upper calf frame 301 After use, the first driving device 801 is started again to retract its output end, thereby driving the calf part 30 to descend, and the distance between the pushing part 603 and the swing rod 20 gradually decreases. The force of the pushing part 603 acting on the connecting belt 50 is less than the reset force, so that the lower calf frame 302 gradually retracts to the upper calf frame 301 under the reset force of the reset member, thereby achieving the lower calf frame 302 automatically extending and retracting into the upper calf frame 301 during the calf frame lifting process, avoiding the setting of a driving device and reducing production costs.

[0048] The working principle of a chair frame proposed in this embodiment is as follows:

[0049] In the initial state, the back frame body 10 is in an upright state, and the calf portion 30 is in a negative angle state, such as Figure 2 shown.

[0050] The first driving device 801 is started to retract its output end, and the back frame body 10 tilts backwards. The chair frame is in the state as shown in FIG. Figure 3 At the same time, the second driving device 802 is started to extend its output end, pushing the swing rod 20 to rotate counterclockwise, so that the first connecting rod 401, the second connecting rod 402, the third connecting rod 403 and the fourth connecting rod 404 rotate in sequence, thereby pushing the calf part 30 to rotate counterclockwise around the back frame body 10, thereby lifting the calf part 30. During the lifting process of the calf part 30, how the lower calf frame 302 extends from the upper calf frame 301 has been described above and will not be repeated here.

[0051] After use, the first driving device 801 is started to extend its output end, the back frame body 10 is lifted, and the chair frame state is restored to the initial state. Figure 2 The second driving device 802 is started again to retract its output end, thereby lowering the calf part 30. During the lowering process of the calf part 30, how the lower calf frame 302 is retracted to the upper calf frame 301 has been described above and will not be repeated here.

[0052] Embodiment 2

[0053] Combine the following Figure 5-Figure 7 The present invention is described in detail.

[0054] The difference between this embodiment and the first embodiment is that the connecting rod device is a single connecting rod, specifically, the connecting rod device is a fifth connecting rod 405, one end of the fifth connecting rod 405 is provided with a slide groove 4051, the slide groove 4051 is slidably adapted to the latch 201 provided on the swing rod 20, and the other end of the fifth connecting rod 405 is hinged to the upper calf frame 301. It also includes a second elastic member 902, the two ends of which are respectively connected to the fifth connecting rod 405 and the swing rod 20, and the second elastic member 902 has the same function as the first elastic member 901, and is also used to improve the compactness of the overall structure and reduce the gap between the calf frame and the seat frame in the retracted state.

[0055] The working principle of a chair frame proposed in this embodiment is as follows:

[0056] In the initial state, the back frame body 10 is in an upright state, and the calf portion 30 is in a negative angle state, such as Figure 5 shown.

[0057] The first driving device 801 is started to retract its output end, and the back frame body 10 tilts backwards. The chair frame is in the state as shown in FIG. Figure 6 At the same time, the second driving device 802 is started to extend its output end, pushing the swing rod 20 to rotate counterclockwise, and the latch 201 moves in the slide slot 4051 until it abuts against the end of the slide slot 4051, thereby pushing the fifth connecting rod 405 to rotate, thereby driving the calf part 30 to rotate counterclockwise around the back frame body 10, and the calf is lifted. During the lifting process of the calf part 30, the principle of how the lower calf frame 302 extends from the upper calf frame 301 is consistent with the above description, and will not be repeated here.

[0058] After use, the second driving device 802 is started to extend its output end, the back frame body 10 is lifted, and the chair frame state is restored to the initial state. Figure 5 The second driving device 802 is started again to retract its output end, thereby lowering the calf part 30. During the lowering process of the calf part 30, how the lower calf frame 302 is retracted to the upper calf frame 301 has been described above and will not be repeated here.

[0059] At the same time, the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A massage chair frame, characterized in that: It comprises a base, a support frame and a back frame body rotatably connected to the support frame, the support frame is horizontally rotatably connected to the base, and the back frame body is an L-shaped structure corresponding to the back and buttocks of the user in a sitting state; The support frame is provided with a support rod in a direction away from the base, and the middle part of the back frame body is hinged to the top of the support rod, so that the massage movement on the back frame body can pass through the middle part of the back frame body; It also includes a first driving device, wherein a fixed end of the first driving device is hinged to the support frame, and an output end of the first driving device is hinged to the back frame body; The front end of the back frame body is hinged with a calf part, and also includes a second driving device, the fixed end of the second driving device is hinged to the back frame body, the output end of the second driving device is connected to the calf part, and the second driving device can push the calf part to rotate to a position below the back frame body or away from the back frame body.

2. A massage chair frame as claimed in claim 1, characterized in that: The hinge between the back frame body and the support rod constitutes a first hinge point, the hinge between the first drive device and the support frame constitutes a second hinge point, and the hinge between the first drive device and the back frame body constitutes a third hinge point. The first hinge point, the second hinge point and the third hinge point must meet the following conditions: the distance between the first hinge point and the second hinge point is not less than 40% of the distance between the second hinge point and the third hinge point after the back frame body is tilted, and the angle between the line between the first hinge point and the second hinge point and the line between the second hinge point and the third hinge point is ≤90°.

3. A massage chair frame as claimed in claim 1 or 2, characterized in that: The calf part is provided with a foot massage mechanism, which can accommodate the user's feet. The second driving device can push the calf part to rotate, so that the foot massage mechanism is located below the back frame body.

4. A massage chair frame as claimed in claim 3, characterized in that: The back of the back frame body is provided with a first connecting seat and a second connecting seat, the output end of the first driving device is hinged to the first connecting seat, and the output end of the second driving device is hinged to the second connecting seat, and the first connecting seat and the second connecting seat are both arched structures so that the massage movement can pass through.

5. A massage chair frame as claimed in claim 3, characterized in that: It also includes a rocker rod and a connecting rod device, one end of the connecting rod device is hinged to the rocker rod, and the other end of the connecting rod device is hinged to the calf part; the connecting rod device includes a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, one end of the first connecting rod is hinged to the other end of the rocker rod, and the other end of the first connecting rod is hinged to the middle part of the second connecting rod; one end of the second connecting rod is hinged to the back frame body, the other end of the second connecting rod is hinged to one end of the third connecting rod, the other end of the third connecting rod is hinged to one end of the fourth connecting rod, and the other end of the fourth connecting rod is hinged to the back frame body coaxially with the calf part.

6. A massage chair frame as claimed in claim 5, characterized in that: It also includes a first elastic member, one end of which is connected to the second connecting rod, and the other end of which is connected to the calf.

7. A massage chair frame as claimed in claim 6, characterized in that: The fourth connecting rod is magnetically attracted to the calf part. When the calf part is reset, the fourth connecting rod is pulled back by the elastic force of the first elastic member and the deadweight of the calf part.

8. A massage chair frame as claimed in claim 5, characterized in that: The connecting rod device comprises a fifth connecting rod, one end of which is provided with a sliding groove, the sliding groove is slidably adapted to be fitted with a latch provided on the swing rod, and the other end of the fifth connecting rod is hinged to the calf part.

9. A massage chair frame as claimed in claim 8, characterized in that: It also includes a second elastic member, two ends of which are respectively connected to the fifth connecting rod and the rocker arm.

10. A massage chair frame as claimed in claim 5, characterized in that: The calf part comprises an upper calf frame and a lower calf frame, the upper calf frame is provided with a transition portion and a push portion, one end of the upper calf frame is hinged to the back frame body, the lower calf frame is telescopically adapted to the upper calf frame and extends out or retracts from the other end of the upper calf frame, and a reset member is provided between the upper calf frame and the lower calf frame, the reset member is used to retract the lower calf frame to the upper calf frame; It also includes a connecting belt, one end of which is connected to the swing rod, and the other end of which is connected to the lower calf frame after passing through the transition part and the pushing part. The connecting belt is used to pull the lower calf frame out of the upper calf frame.

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