Waist rest and seat assembly

Abstract

The invention provides a waist rest and a seat assembly. The waist rest comprises a waist rest body and a guide body. The waist rest body comprises a front supporting face and a rear supporting face which are oppositely arranged in the first direction. The guiding body is fixed to the bottom of the rear supporting face and protrudes towards the side away from the front supporting face in the first direction. The horizontal plane where the lowest point of the guiding body is located is a first plane, the horizontal plane where the lowest point of the front supporting face is located is a second plane, and the first plane is located above the second plane. The guiding and limiting effects can be effectively and quickly achieved through the guiding main body, and then the waist rest is fixed to the seat. In addition, when the first plane is located above the second plane, groove transition is achieved between the waist rest main body and the guide main body, and therefore when the guide main body is fixed to the seat, the situation that the height of a waist supporting point on the waist rest is increased cannot occur.

Description

Technical Field

[0001] The present application relates to the technical field of lumbar supports, and particularly to a lumbar support and a seating assembly. Background Art

[0002] As an important part of an ergonomic seat, the structural design of a lumbar support directly affects the comfort of the user's lumbar support and the convenience of product installation and positioning.

[0003] Traditional lumbar supports have no guiding structure, and misalignment is likely to occur during use. In addition, for some lumbar supports with guiding structures, the transitional design between the guiding structure and the lumbar support area is unreasonable, resulting in a deviation in the height of the lumbar pressing point after installation, greatly weakening the lumbar support effect.

[0004] Therefore, it is necessary to design a lumbar support and a seating assembly that solve the above technical problems. Summary of the Invention

[0005] The present application provides a lumbar support and a seating assembly, which can solve the problem that the lumbar pressing point is raised during guiding and positioning of the lumbar support.

[0006] According to the first aspect of the embodiments of the present specification, a lumbar support is provided, which includes:

[0007] A lumbar support main body, including a front support surface and a rear support surface oppositely arranged in a first direction; and

[0008] A guiding main body, fixed at the bottom of the rear support surface, and the guiding main body protrudes away from the front support surface in the first direction;

[0009] Wherein, the horizontal plane where the lowest point of the guiding main body is located is the first plane, and the horizontal plane where the lowest point of the front support surface is located is the second plane, and the first plane is above the second plane.

[0010] Further, the guiding main body extends and is arranged in a second direction;

[0011] In the first direction, the orthographic projection of the guiding main body is located within the orthographic projection of the lumbar support main body;

[0012] The second direction is perpendicular to the first direction.

[0013] Further, in the first direction, the guiding main body includes a connecting end and a guiding end oppositely arranged; the connecting end is fixedly connected to the rear support surface;

[0014] In the direction from the connecting end to the guiding end, the thickness of the guiding main body gradually decreases; or

[0015] The thickness of the connecting end is greater than the thickness of the guiding end.

[0016] Further, a plurality of grooves extending inward are provided on the rear support surface.

[0017] Further, the plurality of grooves are symmetrically arranged along the middle part of the rear support surface; and / or,

[0018] the plurality of grooves have the same shape; and / or,

[0019] the opening of the groove gradually decreases inward from the rear support surface.

[0020] Further, along the first direction, the groove includes a bottom surface facing the front support surface; along the first direction, the distance from the bottom surface to the front support surface is the support distance;

[0021] the support distances corresponding to the plurality of grooves are the same; or

[0022] the ratio of the support distances of the plurality of grooves is less than or equal to 1.5 and greater than or equal to 0.5; or

[0023] The lumbar support body includes a main support area for supporting the waist and an edge support area on the peripheral side. The support distance corresponding to the groove in the main support area is the first support distance, and the support distance corresponding to the groove in the edge support area is the second support distance. The first support distance is greater than the second support distance.

[0024] Further, the front support surface includes a back support surface and a waist support surface connected in sequence; in the direction from the top end of the back support surface to the connection between the back support surface and the waist support surface, the thickness of the lumbar support body gradually increases.

[0025] Further, the length of the waist support surface in the second direction is 120 mm - 150 mm; and / or, the length of the waist support surface in the third direction is 80 mm - 120 mm;

[0026] Both the second direction and the third direction are perpendicular to the first direction.

[0027] Further, along the third direction, the convex height in the middle of the waist support surface is higher than that at both ends.

[0028] Further, the front support surface includes a support main body and two side support surfaces. The back support surface and the waist support surface form the support main body; the two side support surfaces are respectively located on both sides of the support main body along the second direction; and, the side support surfaces are smoothly transitioned with the back support surface and the waist support surface;

[0029] The second direction is perpendicular to the first direction.

[0030] Further, along the first direction, the maximum length between the back support surface and the side support surface is a, and the maximum length between the back support surface and the waist support surface is b; a is greater than b, and the length difference between the two is 20 mm - 30 mm.

[0031] Further, a plurality of convex points are provided on the back support surface;

[0032] The plurality of convex points are symmetrically arranged about the middle of the back support surface; and / or, the convex points are planar or spherical; and / or

[0033] The convex points are integrally injection-molded with the back support surface; and / or

[0034] In the direction from the top end of the back support surface to the connection between the back support surface and the waist support surface, the plurality of convex points are arranged at intervals and close to the edge of the back support surface.

[0035] Further, along the second direction, the top wall of the lumbar support main body forms a concave arc surface; and / or, along the third direction, the side wall of the lumbar support main body forms a concave arc surface;

[0036] Both the second direction and the third direction are perpendicular to the first direction.

[0037] According to the second aspect of the embodiments of the present specification, a seating assembly is provided, including a seat and the lumbar support according to the first aspect; the seat includes a backrest and a seat cushion, and the guiding main body extends into the gap between the backrest and the seat cushion.

[0038] The present application has the following beneficial effects: The guiding main body in the present application can effectively and quickly play a guiding and limiting role, thereby fixing the lumbar support on the seat. In addition, when the first plane is above the second plane, a groove transition is achieved between the lumbar support main body and the guiding main body. Therefore, when the guiding main body is fixed on the seat, the situation of raising the height of the upper lumbar point of the lumbar support will not occur.

[0039] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings here are incorporated into the specification and form a part of the specification, showing the embodiments consistent with the present specification, and are used together with the specification to explain the principles of the present specification.

[0041] Figure 1 is a perspective view of the lumbar support of the present application;

[0042] Figure 2 isFigure 1 Front view;

[0043] Figure 3 is Figure 1 Rear view;

[0044] Figure 4 is Figure 1 Side view;

[0045] Figure 5 is Figure 1 Cross-sectional view.

[0046] Explanation of reference numerals:

[0047] 10 - lumbar support main body; 11 - front support surface; 111 - back support surface; 112 - lumbar support surface; 12 - rear support surface; 13 - groove; 131 - bottom surface; 14 - side support surface; 15 - bump; 16a, 16b - arc surface;

[0048] 20 - guiding main body; 21 - connecting end; 22 - guiding end. Detailed implementation manners

[0049] Here, the technical solutions in the embodiments (or "implementation manners") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description involves the accompanying drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements.

[0050] If there are terms related to directional indication or positional relationship in the embodiments of the present application (such as up, down, left, right, front, rear, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings); if this specific posture changes, then the directional indication or positional relationship also changes accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only for the purpose of convenient description and cannot be understood as indicating or implying relative importance.

[0051] Next, the embodiments of this specification will be described in detail.

[0052] Referring to Figures 1-5 as shown, the present application discloses a lumbar support, which includes a lumbar support main body 10 and a guiding main body 20. The lumbar support main body 10 includes a front support surface 11 and a rear support surface 12 that are oppositely arranged along a first direction. The guiding main body 20 is fixed to the bottom of the rear support surface 12, and the guiding main body 20 protrudes along the first direction toward the side away from the front support surface 11. Thus, the user can fix the lumbar support main body 10 by inserting the guiding main body 20 into the gap of the seat.

[0053] Vertically, the upper one-third of the lumbar support body 10 is defined as the upper part, the middle one-third is defined as the middle part, and the lower one-third is defined as the bottom. Among them, the guiding body 20 can be provided at the lower one-third of the lumbar support body 10.

[0054] The lumbar support body 10 is integrally injection-molded with sponge. The sponge can be slow-rebound memory foam or high-rebound molded foam. In this embodiment, high-rebound molded foam is used, which is made of slow-rebound polyurethane foam with a density of 45 - 60 kg / m 3 and has an open-cell rate of more than 90%. In this way, while achieving the balance between breathability and support, the sponge can effectively support the waist. Among them, the height of the lumbar support body 10 is 360 - 420 mm to avoid the phenomenon of hitting the shoulders.

[0055] The front support surface 11 includes a back support surface 111 and a waist support surface 112 connected in sequence. In order to ensure the stability of the structure of the waist support surface 112 and at the same time reduce the weight of the lumbar support body 10, the thickness of the lumbar support body 10 gradually increases from the top of the back support surface 111 to the direction of the connection between the back support surface 111 and the waist support surface 112. The thickness at the top of the back support surface 111 is 20 mm - 30 mm.

[0056] The length of the waist support surface 112 in the second direction is c, and the length of c is 120 mm - 150 mm to ensure that the width of the waist support surface 112 is greater than or equal to the width of the user's waist, so that the waist support surface 112 can fully wrap the user's waist.

[0057] The length of the waist support surface 112 in the third direction is 80 mm - 120 mm to ensure that the height of the waist support surface 112 is greater than or equal to the height of the user's waist, so that the waist support surface 112 can fully support the user's waist and avoid the phenomenon of poor waist support. The second direction and the third direction are both perpendicular to the first direction.

[0058] Along the third direction, the convex height in the middle of the waist support surface 112 is higher than that at both ends, and the horizontal section is arranged in a C shape. In this way, when the user's waist leans on the lumbar support, the curved waist arc can fit with the convex waist support surface 112, providing a comfortable leaning feeling.

[0059] On the surface of the back support surface 111 and the waist support surface 112 in contact with the user, a heating pad (not shown in the figure) is provided, so as to provide a warm support feeling in a cold environment. In some other cases, massage heads (not shown in the figure) can also be provided on the surface of the back support surface 111 and the waist support surface 112 in contact with the user, which can promote blood circulation in the neck and relieve neck strain.

[0060] The rear support surface 12 is provided with a plurality of grooves 13 extending inwards. The design of the grooves 13 realizes weight reduction and improves the resilience of the sitting feeling while not affecting the support performance of the lumbar support main body 10. At the same time, it can also meet the requirements of balancing the supportiveness and comfort of the sitting feeling, and avoid the phenomenon of excessive single-dimensional force support.

[0061] The plurality of grooves 13 are symmetrically arranged along the middle part of the rear support surface 12. The shapes of the plurality of grooves 13 are the same. For example, the horizontal cross-section of the groove 13 is square, rhombus, rectangular, circular and other features. In this embodiment, the plurality of grooves 13 are arranged in a dot matrix. In other embodiments, the groove 13 can span the middle part of the rear support surface 12 and be arranged in a long strip shape.

[0062] The opening of the groove 13 gradually decreases inwards from the rear support surface 12. In this way, it is convenient for the demoulding of the groove 13 after forming. The specific shape, quantity and position of the groove 13 can be adjusted in combination with the size and softness of the lumbar support main body 10, and are not limited here.

[0063] Along the first direction, the groove 13 includes a bottom surface 131 facing the front support surface 11. Along the first direction, the distance from the bottom surface 131 to the front support surface 11 is the support distance. The support distances corresponding to the plurality of grooves 13 are the same. In this way, the supportiveness at each groove 13 of the lumbar support can be ensured to be consistent. In another embodiment, the ratio of the support distances of the plurality of grooves 13 is less than or equal to 1.5 and greater than or equal to 0.5.

[0064] In another embodiment, as Figure 5 shown, the lumbar support main body 10 includes a main support area for supporting the waist and an edge support area located on the periphery. The support distance corresponding to the groove 13 in the main support area is the first support distance f, and the support distance corresponding to the groove 13 in the edge support area is the second support distance e. The first support distance f is greater than the second support distance e. In this way, by increasing the thickness of the lumbar support area, the structural stability of the lumbar support main body 10 is ensured.

[0065] The lumbar support main body further includes two side support surfaces 14. The back support surface 111 and the waist support surface 112 form a support main body, and the two side support surfaces 14 are respectively located on both sides of the support main body along the second direction. And, the side support surface 14 is smoothly transitioned with the back support surface 111 and the waist support surface 112 to wrap the user's waist and protect the waist from tilting and offsetting.

[0066] In another embodiment, an adjustable ratchet is installed at the connection between the side support surface 14 and the support main body. In this way, the distance between the two side support surfaces 14 and the support main body can be adjusted, and further the size of the lumbar support area surrounded by the side support surface 14 and the support main body can be changed to meet the usage requirements of different users.

[0067] In the first direction, the maximum length between the back support surface 111 and the side support surface 14 is a, and the maximum length between the back support surface 111 and the waist support surface 112 is b. a is greater than b, and the length difference between the two is 20 mm - 30 mm to avoid the phenomenon that the two side support surfaces 14 have no sense of wrapping.

[0068] A plurality of bumps 15 are provided on the back support surface 111. In the direction from the top end of the back support surface 111 to the connection between the back support surface 111 and the waist support surface 112, the plurality of bumps 15 are arranged at intervals and close to the edge of the back support surface 111. In this way, while not affecting the support performance of the lumbar support main body 10, the plurality of bumps 15 increase the comfort of the first sense of leaning after the human body leans on, and at the same time have certain functions of ventilation, sweating and massage.

[0069] In this embodiment, with the middle part of the back support surface 111 as the center, the bumps 15 are arranged at 65 mm on both sides of the center. The plurality of bumps 15 are arranged at intervals in the vertical direction and symmetrically arranged about the middle part of the back support surface 111. The number and position of the bumps 15 arranged can be adjusted according to the size of different lumbar support main bodies 10, and specific limitations are not made here.

[0070] The bumps 15 are in a planar shape or spherical shape. The bumps 15 and the back support surface 111 are integrally injection-molded to improve the stability of the position of the bumps 15. In some cases, the bumps 15 can also be detachably installed on the back support surface 111, such as by bonding, so as to meet the needs of adjusting the position of the bumps 15 in different situations.

[0071] In the second direction, the top wall of the lumbar support main body 10 forms a concave arc surface 16a to fit the scapular line of the user. In the third direction, the side wall of the lumbar support main body 10 forms a concave arc surface 16b to fit the waist line of the user.

[0072] The guiding main body 20 and the lumbar support main body 10 are integrally injection-molded to improve the stability of the guiding main body 20 on the guiding main body 20. In some cases, the guiding main body 20 can also be detachably installed on the lumbar support main body 10, such as by bonding, to meet the needs of adjusting the position of the guiding main body 20 in different situations.

[0073] The horizontal plane where the lowest point of the guiding main body 20 is located is the first plane, and the horizontal plane where the lowest point of the front support surface 11 is located is the second plane. The first plane is located above the second plane. In this way, a groove 13 is formed for transition between the lumbar support main body 10 and the guiding main body 20. Furthermore, when the guiding main body 20 is fixed on the seat, the height of the upper top waist point of the lumbar support will not be raised.

[0074] The guiding main body 20 is arranged to extend along the second direction. Along the first direction, the orthographic projection of the guiding main body 20 is located within the orthographic projection of the lumbar support main body 10. In this embodiment, the size of the orthographic projection of the guiding main body 20 is smaller than that of the lumbar support main body 10, so that the guiding main body 20 can be blocked by the lumbar support main body 10, making it more beautiful.

[0075] Specifically, along the first direction, the guiding main body 20 includes a connecting end 21 and a guiding end 22 which are oppositely arranged. The connecting end 21 is fixedly connected to the rear support surface 12. In the direction from the connecting end 21 to the guiding end 22, the thickness of the guiding main body 20 gradually decreases. Or the thickness of the connecting end 21 is greater than that of the guiding end 22. In this way, the guiding end 22 with a smaller size can play a guiding role and reduce the alignment time for inserting the guiding main body 20 into the gap between the backrest and the seat cushion.

[0076] This application also discloses a seating assembly, which includes a seat and a lumbar support. The seat includes a backrest and a seat cushion, and the guiding main body 20 extends into the gap between the backrest and the seat cushion. The seat mentioned here can refer to a sofa, a car seat, a functional chair, etc., and is not specifically limited here.

[0077] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the scope of protection of this application.

Claims

1. A lumbar support, characterized in that: It includes: The lumbar support body comprises a front support surface and a rear support surface which are arranged opposite to each other along a first direction; and A guide body, fixed at the bottom of the rear support surface, the guide body protruding along the first direction toward a side away from the front support surface; The horizontal plane at the lowest point of the guide body is the first plane, the horizontal plane at the lowest point of the front support surface is the second plane, and the first plane is located above the second plane.

2. The lumbar support according to claim 1, characterized in that: The guide body is arranged to extend along the second direction; Along the first direction, the orthographic projection of the guide body is located within the orthographic projection of the waist support body; The second direction is perpendicular to the first direction.

3. The lumbar support according to claim 2, characterized in that: Along the first direction, the guide body comprises a connecting end and a guiding end which are arranged opposite to each other; the connecting end is fixedly connected to the rear supporting surface; The thickness of the guide body gradually decreases from the connecting end to the guide end; or The thickness of the connecting end is greater than the thickness of the guiding end.

4. The lumbar support according to claim 1, characterized in that: The rear support surface is provided with a plurality of grooves extending inwardly.

5. The lumbar support according to claim 4, characterized in that: The plurality of grooves are symmetrically arranged along the middle portion of the rear support surface; and / or, The shapes of the plurality of grooves are consistent; and / or, The opening of the groove gradually decreases inward from the rear supporting surface.

6. The lumbar support according to claim 4, characterized in that: Along the first direction, the groove includes a bottom surface facing the front support surface; along the first direction, the distance from the bottom surface to the front support surface is the support distance; The supporting distances corresponding to the plurality of grooves are the same; or The ratio of the support distances of the plurality of grooves is less than or equal to 1.5 and greater than or equal to 0.5; or The lumbar support body includes a main support area for supporting the waist, and an edge support area located on the peripheral side. The support distance corresponding to the groove located in the main support area is the first support distance, and the support distance corresponding to the groove located in the edge support area is the second support distance. The first support distance is greater than the second support distance.

7. The lumbar support according to claim 1, characterized in that: The front support surface includes a back support surface and a waist support surface which are connected in sequence; the thickness of the waist support body gradually increases from the top of the back support surface to the connection between the back support surface and the waist support surface.

8. The lumbar support according to claim 7, characterized in that: The length of the lumbar support surface along the second direction is 120 mm-150 mm; and / or, the length of the lumbar support surface along the third direction is 80 mm-120 mm; The second direction and the third direction are both perpendicular to the first direction.

9. The lumbar support according to claim 7, characterized in that: Along the third direction, the protrusion height in the middle of the lumbar support surface is higher than the protrusion heights at both ends.

10. The lumbar support according to claim 7, characterized in that: The front support surface includes a support body and two side support surfaces, the back support surface and the waist support surface form the support body; the two side support surfaces are respectively located on both sides of the support body along the second direction; and the side support surfaces smoothly transition with the back support surface and the waist support surface; The second direction is perpendicular to the first direction.

11. The lumbar support according to claim 10, characterized in that: Along the first direction, the maximum length between the back support surface and the side support surface is a, and the maximum length between the back support surface and the waist support surface is b; a is greater than b, and the length difference between the two is 20mm-30mm.

12. The lumbar support according to claim 7, characterized in that: The back support surface is provided with a plurality of convex points; The plurality of protrusions are symmetrically arranged about the middle of the back support surface; and / or, The convex points are planar or spherical; and / or The convex point is integrally injection-molded with the back support surface; and / or In a direction from the top of the back support surface to the connection between the back support surface and the waist support surface, the plurality of protrusions are arranged at intervals and close to the edge of the back support surface.

13. The lumbar support according to claim 1, characterized in that Along the second direction, the top wall of the lumbar support body forms a concave arc surface; and / or, along the third direction, the side wall of the lumbar support body forms a concave arc surface; The second direction and the third direction are both perpendicular to the first direction.

14. A seat assembly, characterized in that: The invention comprises a seat and a lumbar support as claimed in any one of claims 1 to 13; the seat comprises a backrest and a cushion, and the guide body extends into a gap between the backrest and the cushion.

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