Waist pillow structure and seat with same

Abstract

The utility model discloses a waist pillow structure and a seat with the waist pillow structure. The waist pillow structure comprises a waist pillow main body, the mounting seat is suitable for being mounted on a seat; the front connecting rod is pivotally connected with the mounting seat and the waist pillow main body respectively; the rear connecting rod is pivotally connected with the mounting seat and the waist pillow main body respectively, and the front connecting rod and the rear connecting rod are arranged in parallel at an interval; the backstop piece is arranged on the rear connecting rod; and the elastic piece is compressed between the stop piece and the mounting seat. The waist pillow structure has the advantages of being free of manual adjustment, good in bearing effect, high in applicability and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a lumbar pillow structure and a seat with the lumbar pillow structure. Background Art

[0002] The lumbar pillow structure of the seat in the related art is divided into a fixed type and a gear-adjustable type. The fixed type is fixed on the chair and cannot be adjusted according to different user body shapes. The gear-adjustable type can adjust the position of the lumbar pillow in a certain gear, but requires manual adjustment by the user, which is inconvenient to operate, and the adjustment gear is relatively rough, making it difficult to achieve the best supporting effect. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a lumbar pillow structure, which has the advantages of no need for manual adjustment, good supporting effect, strong applicability, etc.

[0004] The utility model also provides a seat with the lumbar pillow structure.

[0005] To achieve the above-mentioned purpose, according to an embodiment of the first aspect of the utility model, a lumbar pillow structure is proposed, and the lumbar pillow structure includes: a lumbar pillow body; a mounting seat, the mounting seat is suitable for being installed on a seat; a front connecting rod, the front connecting rod is pivotally connected to the mounting seat and the lumbar pillow body respectively; a rear connecting rod, the rear connecting rod is pivotally connected to the mounting seat and the lumbar pillow body respectively, and the front connecting rod and the rear connecting rod are arranged in parallel and at intervals; a stopper, the stopper is arranged on the rear connecting rod; and an elastic member, the elastic member is compressed between the stopper and the mounting seat.

[0006] The lumbar pillow structure according to the embodiment of the utility model has the advantages of no need for manual adjustment, good supporting effect, strong applicability, etc.

[0007] In addition, the lumbar pillow structure according to the above embodiment of the utility model may also have the following additional technical features:

[0008] According to one embodiment of the utility model, the lumbar pillow structure also includes a front upper rotating shaft, a rear upper rotating shaft, a front lower rotating shaft and a rear lower rotating shaft, the lumbar pillow body is provided with a front upper shaft hole and a rear upper shaft hole spaced apart along the front-to-back direction, the mounting seat is provided with a front lower shaft hole and a rear lower shaft hole spaced apart along the front-to-back direction, the front connecting rod is provided with a front upper through hole and a front lower through hole, the rear connecting rod is provided with a rear upper through hole and a rear lower through hole, the front upper rotating shaft fits in the front upper shaft hole and the front upper through hole, the rear upper rotating shaft fits in the rear upper shaft hole and the rear upper through hole, the front lower rotating shaft fits in the front lower shaft hole and the front lower through hole, and the rear lower rotating shaft fits in the rear lower shaft hole and the rear lower through hole.

[0009] According to an embodiment of the present invention, when the lumbar pillow body is in the frontmost position, the stopper abuts against the lumbar pillow body.

[0010] According to an embodiment of the utility model, a positioning groove is provided on the rear surface of the lumbar pillow body, and the stopper is fitted in the positioning groove when the lumbar pillow body is in the frontmost position.

[0011] According to an embodiment of the utility model, the length direction of the projection of the rear link in a plane parallel to the front-rear direction and the up-down direction and the length direction of the projection of the stop member in a plane parallel to the front-rear direction and the up-down direction are inclined to each other.

[0012] According to one embodiment of the utility model, the elastic member is a curved spring extending axially in an arc shape from back to front, a front spring groove is provided on the stop member, and a rear spring groove is provided on the mounting seat, and the two ends of the elastic member are respectively engaged in the front spring groove and the rear spring groove.

[0013] According to an embodiment of the utility model, the stopper and the rear connecting rod are integrally formed.

[0014] According to an embodiment of the utility model, the lumbar pillow body includes a leaning portion and a mounting portion, the mounting portion is formed on the rear surface of the leaning portion, and the upper ends of the front link and the rear link are pivotally connected to the mounting portion.

[0015] According to an embodiment of the utility model, the front connecting rod, the rear connecting rod, the stopper, the front upper rotating shaft, the rear upper rotating shaft, the front lower rotating shaft and the rear lower rotating shaft are all metal parts.

[0016] According to an embodiment of the second aspect of the utility model, a seat is provided, and the seat comprises a lumbar pillow structure according to the embodiment of the first aspect of the utility model.

[0017] The seat according to the embodiment of the utility model, by utilizing the lumbar pillow structure according to the embodiment of the first aspect of the utility model, has the advantages of no need to manually adjust the lumbar pillow, good supporting effect, strong applicability, etc.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1It is an exploded view of a lumbar pillow structure according to an embodiment of the utility model.

[0021] Figure 2 It is a cross-sectional view of a lumbar pillow structure according to an embodiment of the utility model.

[0022] Figure 3 It is a cross-sectional view of a lumbar pillow structure according to an embodiment of the utility model.

[0023] Figure numerals: lumbar pillow structure 1, lumbar pillow main body 10, leaning portion 11, mounting portion 12, front upper shaft hole 13, rear upper shaft hole 14, positioning groove 15, mounting seat 20, front lower shaft hole 21, rear lower shaft hole 22, rear spring groove 23, front connecting rod 30, front upper through hole 31, front lower through hole 32, rear connecting rod 40, rear upper through hole 41, rear lower through hole 42, stopper 50, front spring groove 51, elastic member 60, front upper rotating shaft 71, rear upper rotating shaft 72, front lower rotating shaft 73, rear lower rotating shaft 74. DETAILED DESCRIPTION

[0024] This application is based on the inventor's discovery and understanding of the following facts and problems:

[0025] The lumbar pillow structure of the seat in the related art is divided into a fixed type and a gear-adjustable type. The fixed type is fixed on the chair and cannot be adjusted according to different user body shapes. The gear-adjustable type can adjust the position of the lumbar pillow in a certain gear, but on the one hand, it requires the user to adjust it manually, which is inconvenient to operate, and the adjustment gear is relatively rough, making it difficult to achieve the best support effect.

[0026] Some lumbar pillow structures in the related art provide restoring elastic force for the lumbar pillow through a spring, and lock the lumbar pillow in the leaning position through a locking structure. When the support is lost, the lumbar pillow will remain in the corresponding position. The user's posture does not remain unchanged when leaning on the lumbar pillow. When the user leans deeply and then returns to a shallow leaning posture, the lumbar pillow cannot automatically reset. The user needs to manually unlock it to provide the best supporting effect, and the operation is still inconvenient.

[0027] In addition, springs are prone to fatigue after long-term use, which affects the supporting effect.

[0028] Some adjustable lumbar pillow structures in the related art use a sliding mechanism to enable the lumbar pillow to slide forward and backward. The friction surface of the sliding mechanism is prone to wear due to frequent use, resulting in damage to the adjustment mechanism or even failure.

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The lumbar pillow structure 1 according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0033] like Figure 1-Figure 3 As shown, the lumbar pillow structure 1 according to the embodiment of the utility model includes a lumbar pillow body 10, a mounting seat 20, a front connecting rod 30, a rear connecting rod 40, a stopper 50 and an elastic member 60 (the up and down and front and back directions are shown by the arrows in the figure).

[0034] The mounting seat 20 is suitable for being mounted on a seat. The front connecting rod 30 is pivotally connected to the mounting seat 20 and the lumbar pillow body 10, respectively. The rear connecting rod 40 is pivotally connected to the mounting seat 20 and the lumbar pillow body 10, respectively, and the front connecting rod 30 and the rear connecting rod 40 are arranged in parallel and spaced apart. The stopper 50 is arranged on the rear connecting rod 40. The elastic member 60 is compressed between the stopper 50 and the mounting seat 20.

[0035] Specifically, the front connecting rod 30, the rear connecting rod 40, the lumbar pillow body 10 and the mounting seat 20 form a parallelogram connecting rod mechanism. When the user leans back against the lumbar pillow body 10, the lumbar pillow body 10 moves backward under the constraint of the parallelogram connecting rod mechanism, and the front connecting rod 30 and the rear connecting rod 40 rotate to compress the elastic member 60. The elastic force generated by the elastic member 60 provides support for the user. In this way, when the user changes posture and the waist moves forward and backward, the lumbar pillow body 10 always keeps the user's waist supported, ensuring the best support effect.

[0036] According to the lumbar pillow structure 1 of the embodiment of the utility model, by setting the front connecting rod 30 and the rear connecting rod 40, the front connecting rod 30 is pivotally connected to the mounting seat 20 and the lumbar pillow body 10 respectively. The rear connecting rod 40 is pivotally connected to the mounting seat 20 and the lumbar pillow body 10 respectively, and the front connecting rod 30 and the rear connecting rod 40 are arranged in parallel and spaced apart. In this way, the front connecting rod 30, the rear connecting rod 40, the lumbar pillow body 10 and the mounting seat 20 can be used to form a parallelogram connecting rod mechanism, so that the position of the lumbar pillow body 10 can be adjusted. Compared with the fixed lumbar pillow in the related art, it can be adapted to users of different body shapes and different postures of users, so as to achieve the best supporting effect and improve the applicability of the lumbar pillow structure 1. In addition, by setting the elastic member 60, the elastic member 60 is compressed at the stop. Between the blocking member 50 and the mounting seat 20, the elastic member 60 can be compressed when the user leans against the lumbar pillow body 10 to generate elastic force to provide supporting force for the user. Compared with the gear-adjustable lumbar pillow in the related art, after the user changes or the user's posture changes, the user does not need to manually adjust the position of the lumbar pillow or unlock the lumbar pillow. The lumbar pillow body 10 can automatically reset under the elastic force of the elastic member 60, thereby achieving self-adaptation to the user's waist position. No additional manual adjustment is required, the operation is more convenient, and it will not be restricted by the gear position, so as to achieve the best supporting effect.

[0037] Furthermore, by utilizing the front connecting rod 30 and the rear connecting rod 40 to form a parallelogram linkage mechanism, compared with the use of sliding mechanisms such as slide rails and sliders, the movement of the lumbar pillow body 10 will only generate rotational friction at the connecting rod pivot point without generating sliding friction, thereby reducing sliding wear and alleviating the overall wear rate of the lumbar pillow structure 1, making it less likely for the lumbar pillow structure 1 to be damaged and fail due to wear, thereby extending the service life of the lumbar pillow structure 1. Moreover, no matter in which direction the user leans on the lumbar pillow body 10, it can move under the constraint of the parallelogram linkage mechanism and will not rotate or move in directions other than the restriction. On the one hand, this can avoid affecting the supporting effect after displacement, and on the other hand, it can make the lumbar pillow structure 1 less likely to be damaged by forces in other directions.

[0038] In addition, by compressing the elastic member 60 between the stop member 50 and the mounting seat 20, compared with the technical solution of installing the elastic member in the connecting rod, not only can the disassembly and assembly of the elastic member 60 be facilitated, but also after the elastic member 60 becomes fatigued due to long-term use and causes the elasticity to decrease, it can be conveniently and promptly replaced so that the elastic member 60 can maintain the best supporting effect. Moreover, the size of the elastic member will not be limited by the size of the connecting rod, which can facilitate ensuring the elastic force of the elastic member 60 and the supporting effect.

[0039] Therefore, the lumbar pillow structure 1 according to the embodiment of the utility model has the advantages of no need for manual adjustment, good supporting effect, strong applicability, etc.

[0040] The lumbar pillow structure 1 according to a specific embodiment of the utility model is described below with reference to the accompanying drawings.

[0041] In some specific embodiments of the present invention, Figure 1-Figure 3 As shown, the lumbar pillow structure 1 according to the embodiment of the utility model includes a lumbar pillow body 10 , a mounting seat 20 , a front connecting rod 30 , a rear connecting rod 40 , a stopper 50 and an elastic member 60 .

[0042] Specifically, Figure 1-Figure 3 As shown, the lumbar pillow structure 1 also includes a front upper rotating shaft 71, a rear upper rotating shaft 72, a front lower rotating shaft 73 and a rear lower rotating shaft 74. The lumbar pillow body 10 is provided with a front upper rotating shaft hole 13 and a rear upper rotating shaft hole 14 spaced apart along the front-to-back direction, the mounting seat 20 is provided with a front lower rotating shaft hole 21 and a rear lower rotating shaft hole 22 spaced apart along the front-to-back direction, the front connecting rod 30 is provided with a front upper through hole 31 and a front lower through hole 32, the rear connecting rod 40 is provided with a rear upper through hole 41 and a rear lower through hole 42, the front upper rotating shaft 71 is fitted in the front upper rotating shaft hole 13 and the front upper through hole 31, the rear upper rotating shaft 72 is fitted in the rear upper rotating shaft hole 14 and the rear upper through hole 41, the front lower rotating shaft 73 is fitted in the front lower rotating shaft hole 21 and the front lower through hole 32, and the rear lower rotating shaft 74 is fitted in the rear lower rotating shaft hole 22 and the rear lower through hole 42. Specifically, the front upper shaft hole 13, the rear upper shaft hole 14, the front lower shaft hole 21, the rear lower shaft hole 22, the front upper through hole 31, the front lower through hole 32, the rear upper through hole 41, and the rear lower through hole 42 are all two and axially opposite. This can facilitate the pivotal connection of the front link 30 and the rear link 40, facilitate the formation of the parallelogram linkage mechanism, and facilitate the stable and smooth rotation of the front link 30 and the rear link 40.

[0043] Advantageously, if Figure 1-Figure 3 As shown, when the lumbar pillow body 10 is in the frontmost position, the stopper 50 abuts against the lumbar pillow body 10. Specifically, Figure 23 shows the state when the lumbar pillow body 10 is in the most forward position. When the lumbar pillow body 10 is in the most forward position, the stopper 50 abuts against the lumbar pillow body 10, limiting the relative rotation between the rear connecting rod 40 and the lumbar pillow body 10, thereby limiting the further forward movement of the lumbar pillow body 10. In this way, the stopper 50 can be used to limit the forward range of movement of the lumbar pillow body 10, preventing the lumbar pillow body 10 from protruding excessively or moving to a position where it is difficult to be compressed backward.

[0044] More advantageously, if Figure 1-Figure 3 As shown, the rear surface of the lumbar pillow body 10 is provided with a positioning groove 15, and when the lumbar pillow body 10 is in the frontmost position, the stopper 50 is fitted in the positioning groove 15. This can improve the stability of the lumbar pillow structure 1 when the lumbar pillow body 10 is in the frontmost position.

[0045] Alternatively, if Figure 1-Figure 3 As shown, the length direction of the projection of the rear connecting rod 40 in a plane parallel to the front-to-back direction and the up-down direction and the length direction of the projection of the stopper 50 in a plane parallel to the front-to-back direction and the up-down direction are inclined to each other. Specifically, the length direction of the projection of the rear connecting rod 40 in a plane parallel to the front-to-back direction and the up-down direction and the length direction of the projection of the stopper 50 in a plane parallel to the front-to-back direction and the up-down direction are 25-40 degrees. In this way, it is convenient for the stopper 50 to compress the elastic member 60, and it is convenient for the elastic member 60 to form the best force application angle, so that the compression process of the lumbar pillow body 10 is uniformly stressed, and it is convenient for the lumbar pillow structure 1 to achieve the best supporting effect.

[0046] Furthermore, the stopper 50 is integrally formed with the rear connecting rod 40. This can simplify the number of parts, improve assembly efficiency, and improve the structural strength of the stopper 50 and the rear connecting rod 40.

[0047] More specifically, the elastic member 60 is a curved spring extending axially from the back to the front in an upward arc shape, the stopper 50 is provided with a front spring slot 51, the mounting seat 20 is provided with a rear spring slot 23, and the two ends of the elastic member 60 are respectively fitted in the front spring slot 51 and the rear spring slot 23. In this way, the elastic member 60 can form an optimal force application angle, so that the force is evenly applied during the compression process of the lumbar pillow body 10, so that the lumbar pillow structure 1 can achieve the best supporting effect.

[0048] Figure 1-Figure 3 The lumbar pillow structure 1 according to some examples of the present invention is shown. Figure 1-Figure 3 As shown, the lumbar pillow body 10 includes a leaning portion 11 and a mounting portion 12, the mounting portion 12 is formed on the rear surface of the leaning portion 11, and the upper ends of the front connecting rod 30 and the rear connecting rod 40 are pivotally connected to the mounting portion 12. In this way, the lumbar pillow body 10 can be pivotally connected to the front connecting rod 30 and the rear connecting rod 40, which is convenient for ensuring the integrity of the leaning portion 11 and improving the supporting effect and comfort of the leaning portion 11.

[0049] Specifically, if Figure 2 As shown, when the lumbar pillow body 10 is in the most forward position, the lower edge of the mounting portion 12 abuts against the mounting seat 20. In this way, the abutment between the lower edge of the mounting portion 12 and the mounting seat 20 can be used to further limit the forward range of motion of the lumbar pillow body 10, thereby preventing the lumbar pillow body 10 from protruding excessively or moving to a position that is difficult to be compressed backward. It should be understood that under the constraint of the parallelogram mechanism formed by the front connecting rod 30 and the rear connecting rod 40, as long as the lumbar pillow body 10 starts to move backward from the most forward position, the lower edge of the mounting portion 12 will immediately separate from the mounting seat 20, so that the lower edge of the mounting portion 12 will not rub against the mounting seat 20 during the movement of the lumbar pillow body 10, thereby avoiding sliding wear.

[0050] Optionally, the front connecting rod 30, the rear connecting rod 40, the stopper 50, the front upper rotating shaft 71, the rear upper rotating shaft 72, the front lower rotating shaft 73 and the rear lower rotating shaft 74 are all metal parts. Specifically, the mounting seat 20 and the lumbar pillow body 10 are plastic parts. In this way, the structural strength of the lumbar pillow structure 1 can be ensured, the wear resistance of the rotating structure can be improved, and the service life of the lumbar pillow structure 1 can be extended.

[0051] The seat according to the embodiment of the present invention is described below. The seat according to the embodiment of the present invention comprises the lumbar pillow structure 1 according to the above embodiment of the present invention.

[0052] The seat according to the embodiment of the utility model has the advantages of no need to manually adjust the lumbar pillow, good supporting effect, strong applicability, etc. by utilizing the lumbar pillow structure 1 according to the above embodiment of the utility model.

[0053] Other structures and operations of the seat according to the embodiment of the utility model are known to those skilled in the art and will not be described in detail here.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A lumbar pillow structure, characterized in that: include: Lumbar pillow body; A mounting seat, the mounting seat being suitable for being mounted on a seat; A front connecting rod, the front connecting rod is pivotally connected to the mounting seat and the lumbar pillow body respectively A rear connecting rod, the rear connecting rod is pivotally connected to the mounting seat and the lumbar pillow body respectively, and the front connecting rod and the rear connecting rod are arranged in parallel and spaced apart; a stopper, the stopper being arranged on the rear connecting rod; An elastic member is compressed between the stopper and the mounting seat.

2. The lumbar pillow structure according to claim 1, characterized in that: It also includes a front upper rotating shaft, a rear upper rotating shaft, a front lower rotating shaft and a rear lower rotating shaft. The lumbar pillow main body is provided with a front upper shaft hole and a rear upper shaft hole spaced apart along the front-to-back direction, the mounting seat is provided with a front lower shaft hole and a rear lower shaft hole spaced apart along the front-to-back direction, the front connecting rod is provided with a front upper through hole and a front lower through hole, the rear connecting rod is provided with a rear upper through hole and a rear lower through hole, the front upper rotating shaft fits in the front upper shaft hole and the front upper through hole, the rear upper rotating shaft fits in the rear upper shaft hole and the rear upper through hole, the front lower rotating shaft fits in the front lower shaft hole and the front lower through hole, and the rear lower rotating shaft fits in the rear lower shaft hole and the rear lower through hole.

3. The lumbar pillow structure according to claim 1, characterized in that: When the lumbar pillow body is at the frontmost position, the stopper abuts against the lumbar pillow body.

4. The lumbar pillow structure according to claim 1, characterized in that: A positioning groove is provided on the rear surface of the lumbar pillow body, and the stopper is fitted in the positioning groove when the lumbar pillow body is in the frontmost position.

5. The lumbar pillow structure according to claim 1, characterized in that: A length direction of a projection of the rear link in a plane parallel to the front-rear direction and the up-down direction and a length direction of a projection of the stopper in a plane parallel to the front-rear direction and the up-down direction are inclined to each other.

6. The lumbar pillow structure according to claim 1, characterized in that: The elastic member is a curved spring extending axially from back to front in an upward arc shape, the stop member is provided with a front spring groove, the mounting seat is provided with a rear spring groove, and the two ends of the elastic member are respectively fitted in the front spring groove and the rear spring groove.

7. The lumbar pillow structure according to claim 1, characterized in that: The stopper is integrally formed with the rear connecting rod.

8. The lumbar pillow structure according to claim 1, characterized in that: The lumbar pillow body comprises a leaning portion and a mounting portion, wherein the mounting portion is formed on the rear surface of the leaning portion, and the upper ends of the front link and the rear link are pivotally connected to the mounting portion.

9. The lumbar pillow structure according to claim 2, characterized in that: The front connecting rod, the rear connecting rod, the stopper, the front upper rotating shaft, the rear upper rotating shaft, the front lower rotating shaft and the rear lower rotating shaft are all metal parts.

10. A seat, characterized in that: It comprises a lumbar pillow structure according to any one of claims 1 to 9.

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