Chair waist pillow structure
By designing an adjustable adjustment rod structure in the chair lumbar pillow, the problem that the existing lumbar pillow cannot adjust the cushion amplitude is solved, and the diversified adaptation of the lumbar pillow is achieved and the comfort of use is improved.
Patent Information
- Application Number
- CN202421971581.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-08-15
AI Technical Summary
The existing chair lumbar pillow cannot effectively meet the needs of different groups of people and cannot adjust the buffer amplitude, resulting in poor user comfort.
A chair lumbar pillow structure with adjustable cushioning amplitude of lumbar pillow is designed. By installing a rotatable adjustment rod between the adjustment seat and the pillow seat, the cushioning strength of the lumbar pillow can be adjusted by different rotation angles of the adjustment rod.
The lumbar pillow is fixed or cushioned to varying degrees, which improves the scope of application, meets the needs of different groups of people, and improves the comfort of the chair.
Smart Images
Figure CN222828327U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a chair, in particular to a waist pillow structure used for supporting the waist in the chair. Background Art
[0002] Chairs are one of the most commonly used furniture in people's daily lives. Since the backrest of traditional chairs cannot effectively support the human waist, it is easy to get tired. For this reason, people often use various types of lumbar pads and pillows to support the lower back, but they are troublesome to use and have low adaptability. For this reason, more and more ergonomic chairs will be equipped with lumbar pillows at the bottom of the front of the chair back to provide stable support for the human waist. The existing chair lumbar pillows are generally fixedly installed on the backrest, and some chairs will install elastic parts between the lumbar pillow and the backrest. The elastic parts will provide cushioning for the user when the user sits down. However, different users have their own usage preferences. Some like larger cushioning, some like smaller cushioning, and some do not like cushioning, resulting in the inability of existing chair lumbar pillows to effectively meet the usage needs of different groups of people. Utility Model Content
[0003] The utility model aims to provide a chair lumbar pillow structure with adjustable lumbar pillow cushioning amplitude, so as to improve the application range and the use comfort.
[0004] The chair lumbar pillow structure described in the utility model comprises a backrest and a lumbar pillow, an adjustment seat is installed at the bottom of the front side of the backrest, and a pillow seat is installed at the back side of the lumbar pillow, the pillow seat and the bottom of the adjustment seat are hinged to each other, and adjustment ears are protruding on both sides of the top of the adjustment seat, and adjustment holes are opened horizontally on the upper edges of the adjustment ears, the pillow seat is sleeved outside the adjustment ears on both sides, and seat holes are opened on both sides of the pillow seat relative to the adjustment holes, and there is also an adjustment rod rotatably installed on the adjustment hole and the seat hole, and the end of the adjustment rod passes through the adjustment hole and the seat hole and is connected to a handle; the adjustment hole is elongated and arranged along the front-back direction of the chair, the seat hole is fan-shaped and arranged opposite to the elongated direction of the adjustment hole, the adjustment rod is flat, and the adjustment rod can be rotated to be parallel to the elongated direction of the adjustment hole and abut against the inner wall of the seat hole; an elastic member is also installed between the adjustment seat and the pillow seat.
[0005] Furthermore, a ball is installed at one end of the handle opposite to the side of the pillow seat, and a plurality of positioning grooves for the ball to be inserted are circumferentially arranged on the side of the pillow seat with the intersection of the pillow seat and the axis of the adjusting rod as the center.
[0006] Furthermore, a positioning hole is provided at the end of the handle, a ball is installed in the positioning hole, and a compression spring is provided between the ball and the bottom of the positioning hole.
[0007] Furthermore, the center angle of the seat hole is 90°, and another radius of the sector is perpendicular to the elongated direction of the adjustment hole.
[0008] Furthermore, the adjustment hole is rectangular.
[0009] Furthermore, the bottom of the pillow seat and the adjustment seat are hinged by a pin shaft, the elastic member is a torsion spring sleeved on the pin shaft, and the two ends of the torsion spring are respectively against the pillow seat and the adjustment seat.
[0010] Furthermore, a through slot is vertically opened on the backrest opposite to the adjustment seat, and an adjustable back plate is provided on the back of the through slot. One of the adjustment seat and the adjustment back plate is provided with a connecting rod passing through the through slot and connecting the other, and a vertical elastic member is connected between the backrest and the adjustment back plate for applying an upward elastic force to the adjustment back plate.
[0011] Furthermore, a roller rolling along the backrest is arranged on the back of the adjustment seat.
[0012] Furthermore, a latch is provided at the bottom of the adjustable back plate, the vertical elastic member is a tension spring, one end of the tension spring is sleeved on the latch, and the other end is fixed to the backrest above the adjustable back plate.
[0013] Furthermore, the lumbar pillow includes a main supporting pillow connected to the pillow seat, and wing pillows arranged on the left and right sides of the main supporting pillow, a gap is left on adjacent sides between the main supporting pillow and the wing pillows, and the main supporting pillow and the wing pillows are connected by elastic spring sheets.
[0014] The chair lumbar pillow structure described in the utility model comprises an adjustment seat and a pillow seat which are respectively installed on the backrest and the lumbar pillow. When the adjustment seat and the pillow seat move relative to each other, the lumbar pillow also moves relative to the backrest. The adjustment hole of the adjustment seat and the seat hole of the pillow seat are opposite to each other. The adjustment hole is elongated while the seat hole is fan-shaped. The adjustment rod passing through the adjustment hole and the seat hole is flat, that is, the adjustment rod has different lengths along different directions. At the same time, when the maximum length direction of the adjustment rod is rotated to be parallel to the elongated direction of the adjustment hole, that is, when the maximum length direction of the adjustment rod is toward the front-rear direction of the chair, the adjustment rod can be pressed against the seat hole, and the base cannot move forward and backward, so that the lumbar pillow forms a fixed structure. When the adjustment rod is rotated to other directions, a certain gap is left between the seat hole and the front-rear direction. At this time, the user leans on the lumbar pillow to apply backward pressure to the lumbar pillow, and the elastic member in contact with the lumbar pillow will be compressed and contracted to form a buffer, thereby forming a buffer structure of the lumbar pillow. With the different rotation angles of the adjustment rod, the gap between the adjustment rod and the seat hole in the front-rear direction is different, and the buffer strength formed is also different. By setting up this chair lumbar pillow structure, the lumbar pillow can form a fixed or different degrees of cushioning effect, which greatly improves its scope of application, meets the needs of different groups of people, and is conducive to improving the comfort of chair use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural diagram of a chair lumbar pillow structure.
[0016] Figure 2It is a partial structural diagram of the chair lumbar pillow structure.
[0017] Figure 3 It is a partial cross-sectional structural schematic diagram of a chair lumbar pillow structure.
[0018] Figure 4 It is a structural schematic diagram of the connection between a chair back, an adjustment seat and an adjustment back plate.
[0019] Figure 5 It is a schematic diagram of the connection structure between the adjusting rod and the seat holes of the adjusting seat and the pillow seat when the adjusting rod is rotated to different states.
[0020] Figure 6 It is a schematic diagram of the connection structure between the adjusting rod and the adjusting hole of the adjusting seat when the adjusting rod is rotated to different states.
[0021] Figure 7 It is a structural diagram of a lumbar pillow. DETAILED DESCRIPTION
[0022] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0024] If there are descriptions involving "first" or "second" in the embodiments of the utility model, the descriptions of "first" or "second" are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0025] The utility model provides a chair lumbar pillow structure.
[0026] The chair lumbar pillow structure of this embodiment includes a backrest 1 and a lumbar pillow 2, an adjustment seat 3 is installed at the bottom of the front of the backrest, and a pillow seat 4 is installed at the back of the lumbar pillow. The pillow seat and the bottom of the adjustment seat are hinged to each other, and adjustment ears 31 are protruding on both sides of the top of the adjustment seat, and adjustment holes 32 are opened horizontally on the upper edge of the adjustment ears. The pillow seat is sleeved outside the adjustment ears on both sides, and seat holes 41 are opened on both sides of the pillow seat relative to the adjustment holes. There is also an adjustment rod 5 rotatably installed on the adjustment hole and the seat hole, and the end of the adjustment rod passes through the adjustment hole and the seat hole and is connected to a handle 6; the adjustment hole is elongated and arranged along the front and rear direction of the chair. Specifically, the adjustment hole 32 can be set to a rectangle, and the seat hole is fan-shaped and one of the radii of the fan is parallel to the long direction of the adjustment hole. The center angle of the seat hole 41 is 90°, and the other radius of the fan is perpendicular to the long direction of the adjustment hole. The adjustment rod is flat, and the adjustment rod can be rotated to be parallel to the long direction of the adjustment hole and abut against the inner wall of the seat hole; an elastic member 7 is also installed between the adjustment seat and the pillow seat.
[0027] like Figure 1-5 As shown, the adjustment seat and the pillow seat are respectively installed on the backrest and the lumbar pillow. When the adjustment seat and the pillow seat produce relative movement, the lumbar pillow also produces relative movement of the backrest; the adjustment hole of the adjustment seat and the seat hole of the pillow seat are opposite to each other, the adjustment hole is long and the seat hole is fan-shaped, and the adjustment rod passing through the adjustment hole and the seat hole is flat, that is, the adjustment rod has different lengths along different directions; at the same time, when the maximum length direction of the adjustment rod is rotated to be parallel to the long direction of the adjustment hole, that is, when the maximum length direction of the adjustment rod is toward the front-back direction of the chair, the adjustment rod can be pressed against the seat hole, and the base will not be able to move forward and backward, so that the lumbar pillow forms a fixed structure; and when the adjustment rod is rotated to other directions, a certain gap is left between the seat hole in the front-back direction. At this time, the user leans on the lumbar pillow to apply backward pressure to the lumbar pillow, and the elastic member in contact with the lumbar pillow will be compressed and contracted to form a buffer, thereby forming a buffer structure for the lumbar pillow, and with the different rotation angles of the adjustment rod, the size of the gap between the adjustment rod and the seat hole in the front-back direction is also different, and the buffer strength and range formed are also different.
[0028] The chair lumbar pillow structure described above has a handle 6 with a ball 8 installed at one end opposite to the side of the pillow seat 4, and the side of the pillow seat is provided with a plurality of positioning grooves 42 for the ball to be inserted into along the circumferential direction with the intersection of the handle and the axis of the adjusting rod 5 as the center; when changing the angle of the adjusting rod, the user can hold the handle to drive the adjusting rod to rotate, and the ball at the end of the handle is inserted into different positioning grooves on the side of the pillow seat to fix the adjusting rod at different angles, thereby forming a specific buffering strength.
[0029] In the chair lumbar pillow structure, the ball 8 can be moved along the side of the pillow seat 4 by extrusion and inserted into different positioning grooves, but it is easy to have great resistance due to space limitations. For this reason, a positioning hole 61 can be set at the end of the handle 6, and the ball 8 is installed in the positioning hole. A compression spring is provided between the ball and the bottom of the positioning hole. The ball is pressed tightly in the positioning groove by the elastic force of the compression spring. When the adjustment rod needs to be turned, the ball can compress the compression spring and retreat into the positioning hole, thereby improving the convenience of operation and the smoothness of adjustment. The elastic member 7 can be a compression spring, a spring washer, or a spring washer. Figure 2 , 3 As shown, the bottom of the pillow seat 4 and the adjustment seat 3 are hinged by a pin 9, the elastic member 7 is a torsion spring sleeved on the pin, and the two ends of the torsion spring are respectively against the pillow seat and the adjustment seat. This structure is more compact and stable in operation.
[0030] The chair lumbar pillow structure has a through slot 11 vertically formed on the backrest 1 opposite to the adjustment seat 3, and an adjustment back plate 12 is provided on the back of the through slot. One of the adjustment seat and the adjustment back plate is provided with a connecting rod 13 passing through the through slot and connecting the other, so that the adjustment seat and the adjustment back plate can move up and down along the through slot. At the same time, a vertical elastic member 14 is connected between the backrest and the adjustment back plate to apply an upward elastic force to the adjustment back plate, thereby providing a vertical buffering effect for the user; in addition, a roller 15 rolling along the backrest 1 is installed on the back of the adjustment seat 3 to improve the smoothness of the up and down movement of the adjustment seat. Figure 4 As shown, a latch 16 is installed at the bottom of the adjustable back plate 12, and the vertical elastic member 14 is a tension spring, and one end of the tension spring is sleeved on the latch and the other end is fixed to the backrest above the adjustable back plate. The tension spring provides the elastic force required for vertical buffering, and its structure is simple and the operation is stable.
[0031] The chair lumbar pillow structure described above comprises a lumbar pillow 2 including a main supporting pillow 21 connected to a pillow base 4, and wing pillows 22 arranged on the left and right sides of the main supporting pillow. A gap is left on adjacent sides between the main supporting pillow and the wing pillows as a deformation space, and the main supporting pillow and the wing pillows are connected by an elastic spring sheet 23. The setting of the spring sheet allows the wing pillows to swing back and forth relative to the main supporting pillow, so that the entire lumbar pillow fits the human waist better and meets the needs of people of different physiques.
[0032] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.
Claims
1. A chair lumbar pillow structure, comprising a backrest (1) and a lumbar pillow (2), characterized in that: An adjustment seat (3) is installed at the bottom of the front side of the backrest, and a pillow seat (4) is installed at the back side of the lumbar pillow. The pillow seat and the bottom of the adjustment seat are hinged to each other. Adjustment ears (31) are protruding on both sides of the top of the adjustment seat, and adjustment holes (32) are opened horizontally on the upper edges of the adjustment ears. The pillow seat is sleeved outside the adjustment ears on both sides, and seat holes (41) are opened on both sides of the pillow seat relative to the adjustment holes. There is also an adjustment rod (5) rotatably installed on the adjustment hole (32) and the seat hole (41), and the end of the adjustment rod passes through the adjustment hole and the seat hole and is connected to a handle (6); the adjustment hole is elongated and arranged along the front-back direction of the chair, the seat hole is fan-shaped and one of the radii of the fan is parallel to the elongated direction of the adjustment hole, the adjustment rod is flat, and the adjustment rod can be rotated to be parallel to the elongated direction of the adjustment hole and abut against the inner wall of the seat hole; an elastic member (7) is also installed between the adjustment seat and the pillow seat.
2. The chair lumbar pillow structure according to claim 1, characterized in that: A ball (8) is mounted on the end of the handle (6) opposite to the side of the pillow seat (4). The side of the pillow seat is provided with a plurality of positioning grooves (42) for the ball to be inserted into along the circumferential direction with the intersection of the pillow seat and the axis of the adjusting rod (5) as the center.
3. The chair lumbar pillow structure according to claim 2, characterized in that: A positioning hole (61) is provided at the end of the handle (6), a ball (8) is installed in the positioning hole, and a compression spring is provided between the ball and the bottom of the positioning hole.
4. The chair lumbar pillow structure according to claim 1, characterized in that: The center angle of the seat hole (41) is 90°, and another radius of the sector is perpendicular to the elongated direction of the adjustment hole (32).
5. The chair lumbar pillow structure according to claim 1, characterized in that: The adjustment hole (32) is rectangular.
6. The chair lumbar pillow structure according to claim 1, characterized in that: The bottoms of the pillow seat (4) and the adjustment seat (3) are hinged via a pin shaft (9), the elastic member (7) is a torsion spring sleeved on the pin shaft, and the two ends of the torsion spring are respectively against the pillow seat and the adjustment seat.
7. The chair lumbar pillow structure according to claim 1, characterized in that: A through slot (11) is vertically formed on the backrest (1) at a position opposite to the adjustment seat (3); an adjustment back plate (12) is provided on the backrest at the back of the through slot; a connecting rod (13) passing through the through slot and connecting the other is provided on one of the adjustment seat and the adjustment back plate; a vertical elastic member (14) is connected between the backrest and the adjustment back plate for applying an upward elastic force to the adjustment back plate.
8. The chair lumbar pillow structure according to claim 7, characterized in that: The back of the adjustment seat (3) is provided with a roller (15) which rolls along the backrest (1).
9. The chair lumbar pillow structure according to claim 7, characterized in that: A latch (16) is arranged at the bottom of the adjustable back plate (12); the vertical elastic member (14) is a tension spring, one end of which is sleeved on the latch and the other end of which is fixed to the backrest above the adjustable back plate.
10. The chair lumbar pillow structure according to claim 8, characterized in that: A latch (16) is arranged at the bottom of the adjustable back plate (12); the vertical elastic member (14) is a tension spring, one end of which is sleeved on the latch and the other end of which is fixed to the backrest above the adjustable back plate.
11. The chair lumbar pillow structure according to any one of claims 1 to 10, characterized in that: The lumbar pillow (2) comprises a main supporting pillow (21) connected to a pillow seat (4), and wing pillows (22) arranged on the left and right sides of the main supporting pillow, a gap is left between adjacent sides of the main supporting pillow and the wing pillows, and the main supporting pillow and the wing pillows are connected via an elastic spring sheet (23).