Multifunctional self-adaptive waist rest for seat

Abstract

The utility model relates to a multi-functional self-adaptation waist rest for a seat, which comprises a base for connecting the seat and a waist support for supporting the back of the seat, a connecting groove is arranged in the base, a connecting seat capable of sliding is arranged in the connecting groove, one end of the connecting seat extends out of the connecting groove to serve as a coupling end, and the other end of the connecting seat is connected with the waist support. The side, facing the base, of the waist support is provided with a coupling part, the coupling part is coupled to the coupling end and can form sliding fit between the coupling part and the coupling end so that the waist support can be adjusted in the vertical direction, a supporting spring is arranged in the connecting groove, one end of the supporting spring is fixed to the bottom of the connecting groove, and the other end of the supporting spring is fixed to the connecting base. The supporting spring provides supporting force for the waist support through the connecting base. The utility model has the following advantages and effects: the waist can be supported more sufficiently, and the use comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a multifunctional adaptive lumbar support for seats. Background Art

[0002] A seat is a piece of furniture that can be leaned on. The backs of some seats are covered with mesh to make them more breathable.

[0003] For example, the Chinese patent technology document with announcement number CN211533487U previously applied by our company discloses a multifunctional swivel chair based on ergonomics, including supporting feet, pneumatic telescopic rods, chassis brackets, seat panels, chair seats, back brackets and chair backs. The lower end of the pneumatic telescopic rods is fixed to the supporting feet, the lower end surface of the chassis brackets is fixed to the upper end of the pneumatic telescopic rods, the chair seats are fixed to the seat panels, the chair backs are fixed to the front side of the upper end of the back brackets, a sliding plate is provided above the chassis brackets, the front end of the sliding plate is connected to the front end of the chassis brackets through a rotating frame, the upper end of the rotating frame is hinged to the front end of the sliding plate, and the lower end of the rotating frame is hinged to the front end of the chassis brackets; the rear end of the sliding plate is hinged to the upper edge of the lower end of the back brackets, and the lower edge of the lower end of the back brackets is hinged to the chassis brackets; an elastic traction mechanism for driving the sliding plate to move forward and reset is provided between the sliding plate and the chassis brackets; the seat panel is fixed to the sliding plate.

[0004] The above technical solution mainly supports the user's waist through a single chair back. However, in actual use, it is found that the support for the user's waist through a single chair back is not sufficient, which affects the overall comfort. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a multifunctional adaptive lumbar support for a seat, which can provide more adequate support for the waist and improve the comfort of use.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multifunctional adaptive lumbar support for a seat, comprising a base for connecting to the seat and a lumbar support for supporting the seat back, a connecting groove being provided in the base, a slidable connecting seat being provided in the connecting groove, one end of the connecting seat extending outside the connecting groove as a coupling end, a coupling portion being provided on the side of the lumbar support facing the base, the coupling portion being coupled to the coupling end and forming a sliding fit between the two to achieve vertical adjustment of the lumbar support, a support spring being provided in the connecting groove, one end of the support spring being fixed to the bottom of the connecting groove, and the other end being fixed to the connecting seat, the support spring providing support force to the lumbar support through the connecting seat.

[0007] The present invention is further configured as follows: a waist support locking device is provided between the coupling end and the coupling portion, and the waist support locking device is used to lock the waist support to prevent the waist support from shaking.

[0008] The utility model is further configured as follows: the lumbar support locking device includes a locking groove arranged on the side of the coupling part facing away from the base, the locking grooves are multiple and arranged at intervals from each other, the coupling end is provided with a mounting groove that can be opposite to the locking groove, a locking spring is fixed in the mounting groove, and a locking steel ball is fixed at the end of the locking spring away from the mounting groove, and the locking spring is used to push the locking steel ball into the locking groove to form a limit fit between the two.

[0009] The present invention is further configured as follows: a connecting seat locking device is provided between the base and the connecting seat, and the connecting seat locking device is used to lock the connecting seat so that the support spring provides a constant supporting force to the lumbar support through the connecting seat.

[0010] The utility model is further configured as follows: the connecting seat locking device includes a locking block that can be moved in the vertical direction, the connecting seat is provided with a locking groove on the side facing the locking block, the locking grooves are multiple and are arranged at intervals from each other, the locking block is provided with a locking protrusion that is adapted to the locking groove, and the locking block is moved in the vertical direction so that the locking protrusion is stuck in the locking groove to achieve locking of the connecting seat.

[0011] The utility model is further configured as follows: a guide column extending downward is provided on the base, and the locking block is sleeved on the guide column to form a sliding fit between the two.

[0012] The utility model is further configured as follows: a positioning block is provided below the locking block, the positioning block is rotatably connected to the base, and the positioning block is rotated to abut against the locking block to constitute a limit for the locking block.

[0013] The utility model is further configured as follows: a handle is fixed on the positioning block, and the handle is used to drive the positioning block to rotate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The lumbar support is provided and connected to the coupling end of the connecting seat by a coupling part, and a support spring connected to the connecting seat is provided in the connecting groove. When leaning on the chair back, the lumbar support can support the chair back, and when the lumbar support is under pressure, it can drive the connecting seat to slide toward the connecting groove to squeeze the support spring. In this way, the force generated by the deformation of the support spring can act on the lumbar support through the connecting seat, so that the lumbar support can provide sufficient supporting force to the chair back, so as to provide more sufficient support for the waist. At the same time, the lumbar support can provide different supporting forces to the chair back through the different compression amplitudes of the support spring, thereby achieving self-adaptation. Therefore, the technical problem of insufficient support for the user's waist by a single chair back in the prior art is effectively solved, thereby improving the comfort of use. In addition, by adjusting the lumbar support in the vertical direction, the lumbar support can be adjusted to a suitable position according to the different body shapes of the users, ensuring that the lumbar support can fully support the user's waist when users with different body shapes lean on the chair, so as to meet more usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the transverse section of the utility model;

[0018] Figure 3 This is a schematic diagram of the longitudinal cross-sectional structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the overall structure of the utility model when it is installed on a seat. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] like Figures 1 to 4 As shown, the utility model discloses a multifunctional adaptive lumbar support for a chair, comprising a base 1 for connecting a seat 3 and a lumbar support 2 for supporting the back of the chair, a connecting groove 101 is provided in the base 1, a slidable connecting seat 3 is provided in the connecting groove 101, one end of the connecting seat 3 extends to the outside of the connecting groove 101 as a coupling end 31, and the lumbar support 2 is provided with a coupling portion 21 on the side facing the base 1, the coupling portion 21 is coupled to the coupling end 31 and can form a sliding fit between the two to achieve vertical adjustment of the lumbar support 2, a supporting spring 4 is provided in the connecting groove 101, one end of the supporting spring 4 is fixed to the bottom of the connecting groove 101, and the other end is fixed to the connecting seat 3, the supporting spring 4 provides supporting force to the lumbar support 2 through the connecting seat 3, and when leaning on the chair back, the lumbar support 2 can The backrest is supported, and the lumbar support 2 can drive the connecting seat 3 to slide toward the connecting groove 101 when under pressure to squeeze the support spring 4. In this way, the force generated by the deformation of the support spring 4 can act on the lumbar support 2 through the connecting seat 3, so that the lumbar support 2 can provide sufficient supporting force to the chair back, so as to provide more sufficient support for the waist. At the same time, the lumbar support 2 can provide different supporting forces to the chair back through the different compression amplitudes of the support spring 4, thereby achieving self-adaptation and improving the comfort of use. In addition, by adjusting the lumbar support 2 in the vertical direction, the lumbar support 2 can be adjusted to a suitable position according to the different body shapes of the users, ensuring that the lumbar support 2 can fully support the waist of users with different body shapes when leaning, so as to meet more usage needs.

[0023] In this embodiment, a lumbar support locking device is further provided between the coupling end 31 and the coupling part 21. The lumbar support locking device is used to lock the lumbar support 2 to prevent the lumbar support 2 from shaking after the position is adjusted. The specific structure of the lumbar support locking device includes a locking groove 51 provided on the side of the coupling part 21 facing away from the base 1. The locking grooves 51 are multiple and spaced apart from each other. A mounting groove 52 that can be opposite to the locking groove 51 is provided on the coupling end 31. A locking spring 53 is fixed in the mounting groove 52. A locking steel ball 54 is fixed at one end of the locking spring 53 away from the mounting groove 52. The locking spring 53 is used to push the locking steel ball 54 into the locking groove 51 to form a limit fit between the two. When adjustment is required, When adjusting the position of the lumbar support 2, since the lumbar support 2 has a certain toughness and there is a certain gap between the coupling part 21 and the coupling end 31, the coupling part 21 is pushed toward the base 1, so that the distance between the locking groove 51 and the installation groove 52 becomes larger, so that the locking steel ball 54 can be disengaged from the locking groove 51. At this time, the lumbar support 2 can be pushed to form a sliding fit between the coupling part 21 and the coupling end 31 to achieve vertical adjustment of the lumbar support 2. After the lumbar support 2 is adjusted to the appropriate position, the locking steel ball 54 can be pushed back into the relative locking groove 51 under the elastic force generated by the locking spring 53 to form a limit fit between the two, thereby achieving locking of the lumbar support 2.

[0024] In this embodiment, a connecting seat locking device is further provided between the base 1 and the connecting seat 3. The connecting seat locking device is used to lock the connecting seat 3 so that the support spring 4 can provide a constant supporting force to the lumbar support 2 through the connecting seat 3. By locking the connecting seat 3 through the connecting seat locking device, the lumbar support 2 will not push the connecting seat 3 to slide when the user leans on the chair back. In this way, the support spring 4 will not produce different degrees of deformation, so that the support spring 4 can provide a constant supporting force to the lumbar support 2 through the connecting seat 3, thereby improving the flexibility of use and meeting the needs of users. More usage requirements, and the specific structure of the connecting seat locking device includes a locking block 61 that can be moved in the vertical direction, and the connecting seat 3 is provided with a locking groove 62 on the side facing the locking block 61. The locking grooves 62 are multiple and spaced apart from each other. The locking block 61 is provided with a locking protrusion 611 that adapts to the locking groove 62. When the connecting seat 3 needs to be locked, the locking block 61 is moved in the vertical direction so that the locking block 61 is close to the connecting seat 3 until the locking protrusion 611 can be snapped into the locking groove 62, thereby locking the connecting seat 3.

[0025] The structure for the locking block 61 to move in the vertical direction is as follows: a guide column 102 extending downward is provided on the base 1, and the locking block 61 is sleeved on the guide column 102 to form a sliding fit therebetween. In this way, the locking block 61 can be moved by sliding along the guide column 102.

[0026] In addition, in order to prevent the locking block 61 from malfunctioning when the locking block 61 locks the connecting seat 3, a positioning block 7 is provided below the locking block 61. The positioning block 7 is rotatably connected to the base 1, and the connection between the positioning block 7 and the base 1 is locked by a locking member. The positioning block 7 is rotated to abut against the locking block 61 to constitute a limit for the locking block 61. Therefore, when the sliding connecting seat 3 is required, the locking member at the connection between the positioning block 7 and the base 1 is first loosened, and the positioning block 7 can be rotated so that the positioning block 7 is away from the base 1. The locking block 61 can be moved at this time to disengage the locking protrusion 611 from the locking groove 62, and the connecting seat 3 can slide. After the connecting seat 3 slides to a suitable position, the positioning block 7 is rotated so that the positioning block 7 can abut against the locking block 61 to push the locking protrusion 611 into the locking groove 62. The locking piece at the connection between the positioning block 7 and the base 1 is tightened to prevent the locking protrusion 611 from disengaging from the locking groove 62, thereby achieving stable locking of the connecting seat 3.

[0027] In this embodiment, a handle 71 is further fixed to the positioning block 7 . The handle 71 is used to drive the positioning block 7 to rotate. The arrangement of the handle 71 makes it more convenient to rotate the positioning block 7 .

[0028] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A multifunctional adaptive lumbar support for a seat, characterized in that: The invention comprises a base for connecting the seat and a lumbar support for supporting the seat back, a connecting groove is provided in the base, a slidable connecting seat is provided in the connecting groove, one end of the connecting seat extends outside the connecting groove as a coupling end, and the lumbar support is provided with a coupling part on the side facing the base, the coupling part is coupled to the coupling end and can form a sliding fit between the two to achieve vertical adjustment of the lumbar support, a support spring is provided in the connecting groove, one end of the support spring is fixed to the bottom of the connecting groove, and the other end is fixed to the connecting seat, and the support spring provides supporting force to the lumbar support through the connecting seat.

2. The multifunctional adaptive lumbar support for a seat according to claim 1, characterized in that: A lumbar support locking device is provided between the coupling end and the coupling portion, and the lumbar support locking device is used to lock the lumbar support to prevent the lumbar support from shaking.

3. The multifunctional adaptive lumbar support for a seat according to claim 2, characterized in that: The lumbar support locking device includes a locking groove arranged on the side of the coupling part facing away from the base. The locking grooves are multiple and spaced apart from each other. A mounting groove that can be opposite to the locking groove is provided on the coupling end. A locking spring is fixed in the mounting groove. A locking steel ball is fixed on the end of the locking spring away from the mounting groove. The locking spring is used to push the locking steel ball into the locking groove to form a limit fit between the two.

4. The multifunctional adaptive lumbar support for a seat according to claim 1, characterized in that: A connecting seat locking device is provided between the base and the connecting seat, and the connecting seat locking device is used to lock the connecting seat so that the support spring provides a constant supporting force to the lumbar support through the connecting seat.

5. The multifunctional adaptive lumbar support for a seat according to claim 4, characterized in that: The connecting seat locking device includes a locking block that can be moved in the vertical direction. The connecting seat is provided with a locking groove on the side facing the locking block. The locking grooves are multiple and spaced apart from each other. The locking block is provided with a locking protrusion that is adapted to the locking groove. The locking block moves in the vertical direction so that the locking protrusion is engaged with the locking groove to lock the connecting seat.

6. The multifunctional adaptive lumbar support for a seat according to claim 5, characterized in that: A guide column extending downward is provided on the base, and the locking block is sleeved on the guide column to form a sliding fit between the two.

7. A multifunctional adaptive lumbar support for a seat according to claim 5 or 6, characterized in that: A positioning block is provided below the locking block. The positioning block is rotatably connected to the base. The positioning block is rotated to abut against the locking block to constitute a position limit for the locking block.

8. The multifunctional adaptive lumbar support for a seat according to claim 7, characterized in that: A handle is fixed on the positioning block, and the handle is used to drive the positioning block to rotate.

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