Movable seat surface adjusting mechanism

Abstract

The utility model discloses a movable seat face adjusting mechanism which comprises a seat face, the seat face is composed of a left seat face plate and a right seat face plate which are in contact with two buttocks respectively, a driving device is arranged below the seat face and comprises a supporting piece and a driving mechanism, the end face of the supporting piece is in contact with the left seat face plate and the right seat face plate, and the end face of the driving mechanism is in contact with the left seat face plate and the right seat face plate. The driving mechanism drives the supporting piece to reciprocate below the left seat panel and the right seat panel, and the supporting piece which reciprocates drives the left seat panel and the right seat panel to alternately sink and recover to a horizontal state; the driving device of the adjusting mechanism is low in height, so that the height of the contact surface between the health-care chair and the buttocks is moderate, and the comfort is not influenced; and the left seat panel and the right seat panel can alternately sink and return to the horizontal state only by driving the supporting piece to reciprocate by one driving mechanism, so that the cost is low.

Description

Technical Field

[0001] This utility model relates to health care equipment, and in particular to a movable seat adjustment mechanism. Background Technology

[0002] The patent, titled "A Health Chair with a Movable Seat for Leg Movement in a Sitting Position" and published under patent number CN 117918659 A, includes a frame with a seat surface inside. The seat surface consists of a left seat panel and a right seat panel that respectively contact the two buttocks. The left and right seat panels are movably connected to the frame via hinge shafts on opposite sides. The seat surface has an elastic cushion to prevent buttock pinching. A support seat is provided under the seat surface. Telescopic rods are provided between the support seat and the left seat panel, and between the support seat and the right seat panel. The two telescopic rods alternately extend and retract, driving the left and right seat panels to rotate back and forth around the hinge shafts. This allows one buttock to sit on the left or right seat panel while the other is suspended, ultimately enabling leg movement in a sitting position and solving the technical problem of poor blood circulation and blocked meridians after prolonged sitting. However, the presence of a support base and two telescopic rods under the seat, along with an elastic cushion on the seat, increases the contact area between the chair and the buttocks, affecting comfort. In addition, the two telescopic rods increase the cost of the drive unit. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a movable seat adjustment mechanism to solve the technical problems raised in the background art.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A movable seat adjustment mechanism includes a seat surface composed of a left seat panel and a right seat panel that respectively contact the two buttocks. A driving device is provided below the seat surface. The driving device includes a support member and a driving mechanism. The end face of the support member contacts the left and right seat panels. The driving mechanism drives the support member to move horizontally reciprocally below the left and right seat panels. The reciprocating support member drives the left and right seat panels to alternately sink and return to a horizontal state.

[0006] Furthermore, the sinking includes the entire left or right seat panel lowering or tilting and flipping downwards.

[0007] Furthermore, it also includes a frame that defines the position and downward trajectory of the left and right seat panels.

[0008] Furthermore, the support member is a trapezoidal block or trapezoidal platform that is smaller at the top and larger at the bottom.

[0009] Furthermore, the driving mechanism is a linear motion mechanism.

[0010] Furthermore, the linear motion mechanism includes a rotatably mounted screw, and an internal threaded hole matching the screw is horizontally opened on the trapezoidal block or trapezoidal platform.

[0011] Furthermore, the support member is a rolling structure.

[0012] Furthermore, the rolling structure is a cylindrical structure or a spherical structure.

[0013] Furthermore, the driving mechanism is a telescopic mechanism, and the rolling structure is provided with a rotating shaft, the end of which is connected to the end of the movable end of the telescopic mechanism.

[0014] Furthermore, the driving mechanism includes a rack with a rotating and matched gear on it, and the rolling structure has a rotating shaft with the end of the rotating shaft connected to the gear shaft.

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

[0016] The movable seat adjustment mechanism proposed in this utility model involves a drive mechanism that moves a support member reciprocating beneath the left and right seat panels. When the support member moves below the left seat panel and away from the right seat panel, the right seat panel lowers or tilts downwards. When the support member moves to the middle position between the left and right seat panels, the right seat panel returns to a horizontal state. Similarly, when the support member moves below the right seat panel and away from the left seat panel, the left seat panel lowers or tilts downwards. When the support member moves to the middle position between the left and right seat panels, the left seat panel returns to a horizontal state. This achieves the alternating lowering and returning to a horizontal position of the left and right seat panels driven by the support member. This drive device has a low height, ensuring a moderate contact height between the chair and the buttocks without compromising comfort. Furthermore, only one drive mechanism is needed to drive the support member to reciprocate, achieving the alternating lowering and returning to a horizontal position of the left and right seat panels, resulting in low cost.

[0017] The rotation of the screw drives the trapezoidal block or trapezoidal platform to move, and the movement of the trapezoidal block or trapezoidal platform enables the left and right seat panels to alternately and slowly sink and return to a horizontal state.

[0018] When the support is a rolling structure, the wear of the left and right seat panels can be reduced.

[0019] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a perspective view of Embodiment 1 of the present utility model.

[0022] Figure 2 This is the first state front view of Embodiment 1 of this utility model.

[0023] Figure 3 This is a front view of the second state of Embodiment 1 of this utility model.

[0024] Figure 4 This is the front view of the third state of Embodiment 1 of this utility model.

[0025] Figure 5 This is a perspective view of Embodiment 2 of the present utility model.

[0026] Figure 6 This is the first state front view of Embodiment 2 of this utility model.

[0027] Figure 7 This is a front view of the second state of Embodiment 2 of this utility model.

[0028] Figure 8 This is the front view of the third state of Embodiment 2 of this utility model.

[0029] Figure 9 This is a perspective view of Embodiment 3 of the present utility model.

[0030] Figure 10 for Figure 9 Enlarged schematic diagram of part A in the middle.

[0031] Figure 11 This is the first state front view of Embodiment 3 of this utility model.

[0032] Figure 12 This is a front view of the second state of Embodiment 3 of this utility model.

[0033] Figure 13 This is the front view of the third state of Embodiment 3 of this utility model.

[0034] Figure 14 This is a three-dimensional cross-sectional view of embodiment four of the present utility model.

[0035] In the diagram: Frame 1, Left seat panel 2, Right seat panel 3, Support frame 4, Trapezoidal block 5, Screw 6, Support block 7, Support rod 8, Nut 9, Ball bearing 10, Support block 11, Cylindrical structure 12, Rotating shaft 13, Electric telescopic rod 14, U-shaped frame 15, Rack 16, Gear 17. Detailed Implementation

[0036] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0037] Example 1

[0038] like Figure 1-4The movable seat adjustment mechanism shown includes a frame with a front opening. The frame 1 has a seat surface, which is composed of a left seat panel 2 and a right seat panel 3 that respectively contact the two buttocks. There are various ways to connect the left seat panel 2 and the right seat panel 3 to the frame 1. For example, the left seat panel 2 and the right seat panel 3 can be slidably arranged in the frame 1, or the left seat panel 2 and the right seat panel 3 can be hinged to the frame 1 on opposite sides via hinge shafts. A chair back is located at the rear of frame 1, and multiple chair legs are installed below frame 1. A support frame 4 connects the chair legs. A drive device is located below the seat and on the support frame 4. The drive device includes a support member and a drive mechanism. The upper end face of the support member contacts the left seat panel 2 and the right seat panel 3. The support member is a trapezoidal block 5 or trapezoidal platform, which is smaller at the top and larger at the bottom. The drive mechanism is a linear motion mechanism, which includes a horizontal screw 6. Both ends of the screw 6 are rotatably mounted on support blocks 7. The lower end of the support blocks 7 is fixed to the support frame 4. A rotating mechanism, which is a motor, is fixed on one of the support blocks 7. The output shaft of the motor is coaxially connected to the screw 6, and the motor's drive circuit is connected to a controller. A support rod 8 is vertically positioned at the center of the lower end face of the trapezoidal block 5 or trapezoidal platform. The lower end of the support rod 8 is connected to a nut 9, which has an internal threaded hole that matches the screw 6. The nut 9 is fitted onto the screw 6. To facilitate the lifting of the left seat panel 2 and the right seat panel 3 by the trapezoidal block 5 or the trapezoidal platform, and to reduce wear on the left seat panel 2 and the right seat panel 3, ball bearings 10 or rollers are provided at the contact positions between the left seat panel 2 and the right seat panel 3 and the trapezoidal block 5 or the trapezoidal platform. The controller starts the motor at regular intervals. The motor drives the screw 6 to rotate slowly. The rotating screw 6 moves the nut 9 left and right, thereby enabling the trapezoidal block 5 or trapezoidal platform to move back and forth under the left seat panel 2 and the right seat panel 3. When the trapezoidal block 5 or trapezoidal platform moves to the position below the left seat panel 2 and away from the right seat panel 3, the right seat panel 3 gradually descends or tilts and flips downward around its hinge axis. When the trapezoidal block 5 or trapezoidal platform moves to the position between the left seat panel 2 and the right seat panel 3, the right seat panel 3 returns to a horizontal state. When the trapezoidal block 5 or trapezoidal platform moves to the position below the right seat panel 3 and away from the left seat panel 2, the left seat panel 2 gradually descends or tilts and flips downward around its hinge axis. When the trapezoidal block 5 or trapezoidal platform moves to the position between the left seat panel 2 and the right seat panel 3, the left seat panel 2 returns to a horizontal state. This realizes that the trapezoidal block 5 or trapezoidal platform drives the left seat panel 2 and the right seat panel 3 to alternately sink and return to a horizontal state. There are various ways that those skilled in the art can conceive of for limiting the downward movement of the left seat panel 2 and the right seat panel 5, such as extending the lower end of the trapezoidal block 5 or trapezoidal platform outward to form a limiting block. The low height of the drive mechanism ensures that the contact surface between the chair and the buttocks is at a moderate height without affecting comfort; and only one drive mechanism is needed to drive the support member to reciprocate, achieving the alternating downward movement and return to a horizontal state of the left seat panel 2 and the right seat panel 3, resulting in low cost. The trapezoidal block 5 or trapezoidal platform enables the alternating, slow downward movement and return to a horizontal state of the left seat panel 2 and the right seat panel 3.

[0039] Example 2

[0040] like Figure 5-8 As shown, the difference from Embodiment 1 is that the support member is a rolling structure, which is a cylindrical structure 12 or a spherical structure. The cylindrical structure 12 or the spherical structure is provided with a rotating shaft 13 located in its radial direction. The driving mechanism is a telescopic mechanism, which includes an electric telescopic rod 14, a pneumatic cylinder or a hydraulic cylinder. The electric telescopic rod 14, the pneumatic cylinder or the hydraulic cylinder is connected to a controller. The end of the electric telescopic rod 14, the pneumatic cylinder or the hydraulic cylinder is provided with a U-shaped frame 15. The two ends of the rotating shaft 13 are respectively rotatably connected to the U-shaped frame 15. The telescopic mechanism extends and retracts, causing the cylindrical structure 12 or the spherical structure to roll left and right. When the cylindrical structure 12 or the spherical structure rolls to below the left seat panel 2 and moves away from it... As the right seat panel 3 moves away from its hinge axis, the right seat panel 3 gradually descends or tilts downwards. When the cylindrical structure 12 or spherical structure rolls to the middle position between the left seat panel 2 and the right seat panel 3, the right seat panel 3 returns to a horizontal state. When the cylindrical structure 12 or spherical structure rolls below the right seat panel 3 and away from the left seat panel 2, the left seat panel 2 gradually descends or tilts downwards around its hinge axis. When the cylindrical structure 12 or spherical structure rolls to the middle position between the left seat panel 2 and the right seat panel 3, the left seat panel 2 returns to a horizontal state. This achieves the alternating downward and horizontal movement of the cylindrical structure 12 or spherical structure driving the left seat panel 2 and the right seat panel 3 to return to a horizontal state. There are various ways that those skilled in the art can conceive of to limit the downward movement of the left and right seat panels, such as extending a U-shaped frame away from the electric telescopic rod, a pneumatic cylinder, or a hydraulic cylinder to the outside of the rolling structure, or an inclined limiting plate set on the frame 1. The rolling structure can reduce the wear of the left seat panel 2 and the right seat panel 3.

[0041] Example 3

[0042] like Figure 9-13As shown, the difference from Embodiment 2 is that the drive mechanism includes two racks 15, and matching gears 16 are respectively provided on the two racks 15. The two ends of the rotating shaft on the cylindrical structure 12 or the spherical structure are respectively connected to the shaft of the two gears 16. The shaft of one of the gears 16 is connected to the output shaft of the motor, and the drive circuit of the motor is connected to the controller. The controller starts the motor, which drives the gear 16 to move left and right on the rack 15. When the cylindrical structure 12 or the spherical structure rolls below the left seat panel 2 and away from the right seat panel 3, the right seat panel 3 gradually descends or tilts and flips downward around its hinge axis. When the cylindrical structure 12 or the spherical structure rolls to the middle position between the left seat panel 2 and the right seat panel 3, the right seat panel 3 returns to a horizontal state. When the cylindrical structure 12 or the spherical structure rolls below the right seat panel 3 and away from the left seat panel 2, the left seat panel 2 gradually descends or tilts and flips downward around its hinge axis. When the cylindrical structure 12 or the spherical structure rolls to the middle position between the left seat panel 2 and the right seat panel 3, the left seat panel 2 returns to a horizontal state. This achieves the alternating downward and horizontal movement of the cylindrical structure 12 or the spherical structure driving the left seat panel 2 and the right seat panel 3. Those skilled in the art can conceive of various ways to limit the downward movement of the left seat panel 2 and the right seat panel 3, such as by setting a support block 11 on the support frame 4.

[0043] Example 4

[0044] like Figure 14The movable seat adjustment mechanism shown includes a frame with a top opening. A seat surface is provided within the frame 1, consisting of a left seat panel 2 and a right seat panel 3 that respectively contact the two buttocks. The left and right seat panels 2 and 3 can be connected to the frame 1 in various ways, such as sliding vertically within the frame 1, or hinged to the frame 1 on opposite sides via hinge shafts. A drive device is located below the seat surface and on the bottom inner surface of the frame 1. The drive device includes a support member and a drive mechanism. The upper end face of the support member contacts the left and right seat panels 2 and 3. The support member is a trapezoidal block 5 or trapezoidal platform, smaller at the top and larger at the bottom. The drive mechanism is a linear motion mechanism, including a horizontal screw 6. Both ends of the screw 6 are rotatably mounted on support blocks 7. The lower end of the support blocks 7 is fixed to the bottom inner surface of the frame. A rotating mechanism, which is a motor, is fixed on one of the support blocks 7. The output shaft of the motor is coaxially connected to the screw 6, and the motor's drive circuit is connected to a controller. A support rod 8 is vertically positioned at the center of the lower end face of the trapezoidal block 5 or the trapezoidal platform. The lower end of the support rod 8 is connected to a nut 9, which has an internal threaded hole that matches the screw rod 6. The nut 9 is fitted onto the screw rod 6. To facilitate the lifting of the left seat panel 2 and the right seat panel 3 by the trapezoidal block 5 or the trapezoidal platform, and to reduce wear on the left seat panel 2 and the right seat panel 3, ball bearings 10 or rollers are provided at the contact points between the left seat panel 2 and the right seat panel 3 and the trapezoidal block 5 or the trapezoidal platform. The controller starts the motor at regular intervals. The motor drives the screw 6 to rotate slowly. The rotating screw 6 moves the nut 9 left and right, thereby enabling the trapezoidal block 5 or trapezoidal platform to move back and forth under the left seat panel 2 and the right seat panel 3. When the trapezoidal block 5 or trapezoidal platform moves to the position below the left seat panel 2 and away from the right seat panel 3, the right seat panel 3 gradually descends or tilts and flips downward around its hinge axis. When the trapezoidal block 5 or trapezoidal platform moves to the position between the left seat panel 2 and the right seat panel 3, the right seat panel 3 returns to a horizontal state. When the trapezoidal block 5 or trapezoidal platform moves to the position below the right seat panel 3 and away from the left seat panel 2, the left seat panel 2 gradually descends or tilts and flips downward around its hinge axis. When the trapezoidal block 5 or trapezoidal platform moves to the position between the left seat panel 2 and the right seat panel 3, the left seat panel 2 returns to a horizontal state. This realizes that the trapezoidal block 5 or trapezoidal platform drives the left seat panel 2 and the right seat panel 3 to alternately sink and return to a horizontal state. There are various ways that those skilled in the art can conceive of for limiting the downward movement of the left seat panel 2 and the right seat panel 5, such as extending the lower end of the trapezoidal block 5 or trapezoidal platform outward to form a limiting block. The low height of the drive device ensures a small frame thickness. This structure can be used independently or placed on existing chairs or sofas without modification. Furthermore, only one drive mechanism is needed to drive the support members in reciprocating motion to achieve the alternating downward movement and return of the left seat panel 2 and the right seat panel 3 to a horizontal position, resulting in low cost. The trapezoidal block 5 or trapezoidal platform enables the left seat panel 2 and the right seat panel 3 to alternately and slowly sink and return to a horizontal position.

[0045] According to embodiments one to four of this utility model, an anti-pinch seat cushion can be provided on the seat surface, and the seat cushion can be a sponge pad.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A movable seat surface adjustment mechanism comprising a seat surface consisting of a left seat surface panel (2) and a right seat surface panel (3) contacting a respective hip part of two hips, characterized in that: The driving device is arranged below the seat surface and comprises a support and a driving mechanism, the end surface of the support is in contact with the left seat panel (2) and the right seat panel (3), the driving mechanism drives the support to move reciprocatingly below the left seat panel (2) and the right seat panel (3), and the reciprocating support drives the left seat panel (2) and the right seat panel (3) to realize the motion of sinking and recovering to the horizontal state alternately.

2. The movable seating surface adjustment mechanism of claim 1, wherein: The sinking comprises the integral descending or tilting downward overturning of the left seat panel (2) or the right seat panel (3).

3. The movable seating surface adjustment mechanism of claim 2, wherein: The frame (1) is further arranged for defining the position and the motion track of the sinking of the left seat panel (2) and the right seat panel (3).

4. The movable seating surface adjustment mechanism of claim 3, wherein: The support is a trapezoidal block (5) or a trapezoidal table.

5. The movable seating surface adjustment mechanism of claim 4, wherein: The driving mechanism is a linear motion mechanism.

6. The movable seating surface adjustment mechanism of claim 5, wherein: The linear motion mechanism comprises a rotating screw rod (6), and a matching internal thread hole is horizontally arranged on the trapezoidal block (5) or the trapezoidal table.

7. The movable seating surface adjustment mechanism of claim 3, wherein: The support is a rolling structure.

8. The movable seating surface adjustment mechanism of claim 7, wherein: The rolling structure is a cylindrical structure (12) or a spherical structure.

9. The movable seating surface adjustment mechanism of claim 7 or 8, wherein: The driving mechanism is a telescopic mechanism (14), the rolling structure is provided with a rotating shaft, and the end of the rotating shaft is connected to the end of the movable end of the telescopic mechanism.

10. The movable seating surface adjustment mechanism of claim 7 or 8, wherein: The driving mechanism comprises a gear rack (15), a rotating and matching gear (16) is arranged on the gear rack (15), the rolling structure is provided with a rotating shaft, and the end of the rotating shaft is connected to the shaft center of the gear (16).

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