Sectional type waist support structure

Abstract

The utility model belongs to the technical field of waist supports, and particularly relates to a sectional type waist support structure. The utility model provides a sectional type waist support structure which is characterized in that a fixed frame unit, a rotating frame unit and a reset spring are arranged on a main support and an auxiliary support, so that the fixed frame unit and the rotating frame unit are respectively arranged on the main support and the auxiliary support and are mutually hinged; the extruded auxiliary support resets through the reset spring, the auxiliary support jacks the waist according to the extrusion state, meanwhile, the auxiliary support can actively reset to meet the jacking and resetting requirements of different body types and sitting postures, the movement range is flexible, feedback is timely, the structure is simple and exquisite, and the applicability is wider.

Description

Technical Field

[0001] The utility model belongs to the technical field of lumbar supports, and in particular relates to a segmented lumbar support structure. Background Art

[0002] A lumbar support is a device used to support and protect the lower back, often installed on chairs. It provides stability and support for the lower back, alleviating pressure and pain from prolonged sitting, and helping maintain correct posture. Lumbar supports are typically one-piece structures, but they cannot fully adapt to the shape of each individual waist, thus providing flexible support. Therefore, adjustable, segmented lumbar supports offer multiple levels of support, adapting to different waist shapes while also meeting the support needs of varying sitting postures.

[0003] The segmented lumbar support in the prior art is divided into several sections, including a main lumbar support fixedly arranged on the chair back and a secondary lumbar support hingedly arranged with the main lumbar support.

[0004] For example, a Chinese invention patent application with patent publication number CN116268847A and publication date 2023.06.23 discloses a waist-clamping lumbar support and a chair. The structure includes a back frame, a support body that contacts the human waist and back, and an elastic body connected to the back frame. The support body includes a main support and an auxiliary support. The elastic body is connected to the main support, and the elastic force drives the main support to move in the front and back directions.

[0005] The waist-clamping lumbar support in this invention patent has the following general structural principles: one end of the elastic body is connected to the support part, and the other end is connected to the main support; a flip device connects the main support and the auxiliary support, so that the auxiliary support can rotate forward and backward relative to the main support, and the auxiliary support slides in the slide track on the side extension part through the sliding pin; when the waist and back are facing backward, the main support moves backward to compress the elastic body, and the auxiliary supports on both sides are positioned relatively forward in the front-to-back direction, thereby wrapping and fitting the waist.

[0006] However, the lumbar support still has at least the following deficiencies during actual use, which are, in other words, the technical problems to be solved by the present invention.

[0007] Its auxiliary support structure achieves a reset effect through the appropriate elasticity of the side extension part. However, this reset effect has many problems, such as being passive, having an unadjustable amplitude, and having an increasingly smaller amplitude. Therefore, the reset effect is not ideal.

[0008] Therefore, in summary, a new lumbar support structure with active repositioning of the auxiliary support is urgently needed. Utility Model Content

[0009] The utility model provides a segmented lumbar support structure, which can be achieved by arranging a fixed frame unit, a rotating frame unit and a reset spring on the main support and the auxiliary support, so that: the fixed frame unit and the rotating frame unit are respectively arranged on the main support and the auxiliary support, the fixed frame unit and the rotating frame unit are hinged to each other, the auxiliary support is reset by the reset spring after being squeezed, the auxiliary support supports the waist according to the squeezed state, and can actively reset to meet the supporting and resetting requirements of different body shapes and sitting postures, with flexible range of motion, timely feedback, simple and sophisticated structure and wider applicability.

[0010] The technical solution adopted by the present invention to solve the above-mentioned problem is: a segmented lumbar support structure, including a main support and a secondary support, further including a fixed frame unit arranged on the main support, a rotating frame unit hingedly arranged on the fixed frame unit and used to connect to the secondary support, and a return spring arranged between the fixed frame unit and the rotating frame unit.

[0011] A further preferred technical solution is that the fixed frame unit includes a mounting plate arranged on the main support, a bottom plate arranged on the mounting plate and used to install the return spring, a side plate arranged on the bottom plate, and a mounting hole arranged on the side plate and used to hinge the rotating frame unit.

[0012] A further preferred technical solution is that the rotating frame unit includes a connecting plate provided on the sub-support and used to connect to the return spring, an extension plate provided on the connecting plate, and a hinge shaft provided on the extension plate and inserted into the mounting hole.

[0013] A further preferred technical solution is that: the fixed frame unit also includes an end plate arranged on the bottom plate and the side plate; the rotating frame unit also includes a maximum expansion angle limit plate arranged on the connecting plate and the extension plate and used to support the end plate.

[0014] A further preferred technical solution is that: the number of the extension plates is two; the rotating frame unit further includes an initial positioning plate provided on the two extension plates and used together with the two extension plates to abut against the bottom plate.

[0015] A further preferred technical solution is that a tension spring is provided between the initial position plate and the mounting plate.

[0016] A further preferred technical solution is that the fixing frame unit further includes an initial angle lifting bar provided on the bottom plate and used to support the initial position plate.

[0017] A further preferred technical solution is that the fixing frame unit further includes a spring column provided on the bottom plate and used for mounting the return spring.

[0018] A further preferred technical solution is that the rotating frame unit further includes a supporting sleeve provided on the connecting plate and used for sleeve-engaging the reset spring.

[0019] A further preferred technical solution is that the rotating frame unit further includes a connecting hole provided on the connecting plate and used for connecting to the auxiliary support. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a cross-sectional structural diagram of the present utility model.

[0021] Figure 2 This is a structural connection diagram of the auxiliary support in the initial state of the utility model.

[0022] Figure 3 This is a structural connection diagram of the auxiliary support in the compressed state of the utility model.

[0023] Figure 4 It is a cross-sectional exploded view of the fixed frame unit and the rotating frame unit in the present invention.

[0024] Figure 5 It is a structural stereogram of the fixing frame unit in the present invention.

[0025] Figure 6 This is a structural cross-sectional view of the rotating frame unit in the present invention.

[0026] Figure 7 It is a back perspective view of the present invention.

[0027] In the figure, the meanings of the marks are as follows:

[0028] Main support 11, secondary support 12;

[0029] Fixed frame unit 1, rotating frame unit 2, return spring 3, tension spring 4, spring piece 5;

[0030] Mounting plate 101, bottom plate 102, side plate 103, mounting hole 104, end plate 105, lifting strip 106 for initial angle, spring column 107, connecting plate 201, extension plate 202, hinge shaft 203, maximum expansion angle limit plate 204, initial position positioning plate 205, support sleeve 206, connecting hole 207. DETAILED DESCRIPTION

[0031] The following description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0032] As attached Figure 1-7As shown, a segmented lumbar support structure includes a main support 11 and a secondary support 12, a fixed frame unit 1 arranged on the main support 11, a rotating frame unit 2 hingedly arranged on the fixed frame unit 1 and used to connect to the secondary support 12, and a return spring 3 arranged between the fixed frame unit 1 and the rotating frame unit 2.

[0033] In this embodiment, as shown in the attached Figure 1 and attached Figure 7 As shown, the segmented lumbar support structure includes the main support 11 and the auxiliary support 12. Usually, the auxiliary support 12 is movably arranged on both sides of the main support 11. A sponge pad for supporting the waist is provided on one side of the main support 11, and a connecting block for connecting to the backrest is provided on the other side. Two connecting blocks of different lengths connected to the backrest can be provided at the upper and lower ends of the main support 11 respectively, and the extension and tilt angle of the main support 11 can be adjusted according to needs.

[0034] In addition, the fixed frame unit 1 is arranged on the main bracket 11 for mounting and supporting the rotating frame unit 2 and the return spring 3. The rotating frame unit 2 is arranged on the secondary bracket 12 and is hinged to the fixed frame unit 1, so that the secondary bracket 12 can move forward and backward relative to the main bracket 11 around the hinge point, so that it can fit flexibly with the waist. The return spring 3 is arranged between the fixed frame unit 1 and the rotating frame unit 2, and can reset the rotating frame unit 2 while supporting the rotating frame unit 2. Figure 2 As shown, in the initial state, the rotating frame unit 2 is supported by the return spring 3, and the auxiliary support 12 is supported toward the waist position. When the external environment applies pressure to the auxiliary support 12, as shown in the attached Figure 3 As shown, the sub-support 12 is squeezed backward around the hinge point. When the squeezing force of the sub-support is weakened or withdrawn, the reset spring 3 pushes the sub-support 12 to reset and return to the initial state. The active reset method not only has real-time feedback, but also has a stable connection.

[0035] Finally, the fixed frame unit 1, the rotating frame unit 2, and the return spring 3 can be arranged in multiple groups on the main support 11 and the auxiliary support 12. The spring piece 5 can also be added between the main support 11 and the auxiliary support 12 to enhance the return effect and support strength of the auxiliary support 12, thereby improving the user experience and product life while ensuring the lumbar support requirements.

[0036] The fixed frame unit 1 includes a mounting plate 101 provided on the main bracket 11, a bottom plate 102 provided on the mounting plate 101 and used for mounting the return spring 3, a side plate 103 provided on the bottom plate 102, and a mounting hole 104 provided on the side plate 103 and used for hingedly connecting the rotating frame unit 2.

[0037] In this embodiment, the mounting plate 101 is used to connect the main support 11. It can be designed as an integral part of the main support 11, or it can be detachably connected by screwing. The bottom plate 102 is used to install and support the reset spring 3 and limit the rotation angle of the rotating frame unit 2. The side plate 103 is arranged on the bottom plate 102 and is hinged to the rotating frame unit 2 through the mounting hole 104 on the side plate 103.

[0038] The rotating frame unit 2 includes a connecting plate 201 provided on the sub-support 12 and used to connect to the return spring 3 , an extension plate 202 provided on the connecting plate 201 , and a hinge shaft 203 provided on the extension plate 202 and inserted into the mounting hole 104 .

[0039] In this embodiment, the connecting plate 201 is used to connect the sub-support 12 and is connected to the other end of the return spring 3. The extension plate 202 is hinged to the side plate 103 through the hinge shaft 203. The extension plate 202 can rotate around the hinge shaft 203 relative to the side plate 103 within a certain range. At the same time, the rotation range is limited by the base plate 102 and the return spring 3. After rotation, the extension plate 202 is reset by the return spring 3.

[0040] The fixed frame unit 1 further includes an end plate 105 provided on the bottom plate 102 and the side plate 103 ; the rotating frame unit 2 further includes a maximum expansion angle limit plate 204 provided on the connecting plate 201 and the extension plate 202 and used to support the end plate 105 .

[0041] In this embodiment, the mounting plate 101, the bottom plate 102, the side plates 103, and the end plate 105 form a housing with one end open. The end plate 105 supports and limits the extension plate 202. The maximum deployment angle limit plate 204 is disposed on the connecting plate 201 and is located away from the mounting plate 101. When the extension plate 202 rotates to the maximum deployment position, the maximum deployment angle limit plate 204 abuts against the end plate 105. When the maximum deployment angle limit plate 204 abuts against the bottom plate 102, the secondary support 12 is in a compressed state.

[0042] The number of the extension plates 202 is two; the rotating frame unit 2 further includes an initial positioning plate 205 provided on the two extension plates 202 and used together with the two extension plates 202 to abut against the bottom plate 102 .

[0043] In this embodiment, the extension plate 202 is a trapezoidal plate, the long side of which is the side of the maximum expansion angle limit plate 204, and the short side is the side of the initial state positioning plate 205. The initial state positioning plate 205 is arranged on the connecting plate 201, located close to the side of the mounting plate 101, and is used to connect the two extension plates 202. When the initial state positioning plate 205 contacts the base plate 102, the sub-support 12 is in the initial state.

[0044] A tension spring 4 is provided between the initial positioning plate 205 and the mounting plate 101 .

[0045] In this embodiment, the function of the tension spring 4 is that when the auxiliary support 12 is compressed and expanded, the initial positioning plate 205 is away from the mounting plate 101. At this time, the tension spring 4 plays a certain pulling role, thereby increasing the reset and supporting effects.

[0046] The fixing frame unit 1 further includes an initial angle lifting bar 106 disposed on the bottom plate 102 and used to abut against the initial position positioning plate 205 .

[0047] In this embodiment, the initial angle lifting strip 106 is provided in the bottom plate 102. When the auxiliary support 12 is in the initial state, the initial state positioning plate 205 and the initial angle lifting strip 106 abut against each other to play a positioning and supporting role.

[0048] The fixing frame unit 1 further includes a spring column 107 disposed on the bottom plate 102 and used for mounting the return spring 3 .

[0049] In this embodiment, the spring column 107 is used to install the reset spring 3, which facilitates the replacement of the reset spring 3 when the reset effect is not good or the supporting effect needs to be changed.

[0050] The rotating frame unit 2 further includes a supporting sleeve 206 disposed on the connecting plate 201 and used for sleeve-engaging the return spring 3 .

[0051] In this embodiment, the support sleeve 206 protects the return spring 3 to prevent the return spring 3 from being deformed or falling off due to stress, while increasing the structural strength.

[0052] The rotating frame unit 2 further includes a connecting hole 207 provided on the connecting plate 201 and used for connecting to the auxiliary support 12 .

[0053] In this embodiment, the connecting hole 207 is provided at the bottom of the connecting plate 201 for detachably connecting to the auxiliary support 12 .

[0054] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications are possible within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. These modifications are non-inventive and are protected by patent law as long as they fall within the scope of the claims of the present invention.

Claims

1. A segmented lumbar support structure, comprising a main support (11) and a secondary support (12), characterized in that: It also includes a fixed frame unit (1) arranged on the main support (11), a rotating frame unit (2) hingedly arranged on the fixed frame unit (1) and used to connect to the secondary support (12), and a return spring (3) arranged between the fixed frame unit (1) and the rotating frame unit (2).

2. The segmented lumbar support structure according to claim 1, characterized in that: The fixed frame unit (1) comprises a mounting plate (101) arranged on the main support (11), a bottom plate (102) arranged on the mounting plate (101) and used for mounting the return spring (3), a side plate (103) arranged on the bottom plate (102), and a mounting hole (104) arranged on the side plate (103) and used for hingedly connecting the rotating frame unit (2).

3. The segmented lumbar support structure according to claim 2, characterized in that: The rotating frame unit (2) comprises a connecting plate (201) arranged on the auxiliary support (12) and used to connect the return spring (3), an extension plate (202) arranged on the connecting plate (201), and a hinge shaft (203) arranged on the extension plate (202) and inserted into the mounting hole (104).

4. The segmented lumbar support structure according to claim 3, characterized in that: The fixed frame unit (1) further comprises an end plate (105) arranged on the bottom plate (102) and the side plate (103); the rotating frame unit (2) further comprises a maximum expansion angle limit plate (204) arranged on the connecting plate (201) and the extension plate (202) and used to abut against the end plate (105).

5. The segmented lumbar support structure according to claim 3, characterized in that: The number of the extension plates (202) is two; the rotating frame unit (2) further comprises an initial position plate (205) provided on the two extension plates (202) and used together with the two extension plates (202) to abut against the bottom plate (102).

6. The segmented lumbar support structure according to claim 5, characterized in that: A tension spring (4) is provided between the initial position plate (205) and the mounting plate (101).

7. The segmented lumbar support structure according to claim 5, characterized in that: The fixing frame unit (1) further comprises an initial angle lifting strip (106) provided on the bottom plate (102) and used to abut against the initial position plate (205).

8. The segmented lumbar support structure according to claim 2, characterized in that: The fixing frame unit (1) further comprises a spring column (107) arranged on the base plate (102) and used for mounting the return spring (3).

9. The segmented lumbar support structure according to claim 3, characterized in that: The rotating frame unit (2) further comprises a supporting sleeve (206) provided on the connecting plate (201) and used for sleeve-engaging the return spring (3).

10. The segmented lumbar support structure according to claim 3, characterized in that: The rotating frame unit (2) further comprises a connecting hole (207) provided on the connecting plate (201) and used for connecting to the auxiliary support (12).

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