Chair structure

Abstract

A chair structure is characterized in that an adjusting bin is arranged in a chair seat, a waist rest is installed at the upper end of a supporting rod, the lower end of the supporting rod is connected with an adjusting rod, and the adjusting rod extends into the adjusting bin and is connected with a sliding block. Therefore, the supporting rod and the waist rest are sequentially driven to move, and adjustment is achieved. The chair is stable in structure adjustment, high in precision and capable of effectively ensuring the riding comfort, reducing the cost and prolonging the service life.

Description

Technical Field

[0001] The utility model relates to a chair, in particular to an adjustable chair structure. Background Art

[0002] Traditional chairs include a seat for sitting, legs installed at the bottom of the seat, and a backrest installed at the back of the seat; with the continuous development of technology and the improvement of people's usage requirements, the design of chairs needs to be more ergonomic to improve the comfort of use. These chairs are generally also equipped with headrests, shoulder pillows, lumbar supports and other components to support different parts of the human body. The lumbar support is installed on the backrest or seat of the chair. Although it can provide support for the human waist, the fixed installation makes it unsuitable for different groups of users, which seriously affects the comfort of use; some chairs are equipped with adjustable lumbar supports, but they need to be supported by the backrest, and the adjustment range is limited. Utility Model Content

[0003] The utility model aims to provide a chair structure with a large adjustment range and convenient adjustment.

[0004] The chair structure described in the utility model comprises a chair back, a chair seat, chair legs and a lumbar support, wherein a hollow adjustment chamber is arranged in the chair seat, the lumbar support and the chair back are arranged separately, a support rod is connected to the back side of the lumbar support, and the other end of the support rod is inserted into the adjustment chamber, and an adjustment mechanism for driving the support rod to move is arranged in the adjustment chamber.

[0005] Furthermore, the adjustment mechanism includes a driver and a movable slider arranged in the adjustment chamber, the driver is connected to a screw rod, and an adjustment nut threadedly connected to the screw rod is fixedly installed on the slider; the support rod is connected to an adjustment rod, one end of the adjustment rod passes through the outer wall of the seat and extends into the adjustment chamber to connect with the slider.

[0006] Furthermore, the driver includes a motor installed in the seat and connected to the screw rod, and a controller installed on the side of the outer wall of the seat, and the controller controls the operation of the motor through circuits or wireless signals.

[0007] Furthermore, an adjustment box with a top opening is fixedly installed in the adjustment compartment of the seat, a slider is arranged in the adjustment box, two adjustment rods are respectively arranged on both sides of the adjustment box, and there is an adjustment plate that simultaneously connects the two adjustment rods and the slider, and the adjustment plate is provided with guide grooves that limit and guide each other with the two side edges of the top surface of the adjustment box.

[0008] Furthermore, there are a headrest and a mounting seat; the back of the bottom of the headrest is against the chair back; the bottom of the mounting seat is fixedly installed on the back side of the chair back, the top of the mounting seat is higher than the chair back, and a connecting portion extends forward from the top of the mounting seat, and a pillow seat is hinged at one end of the connecting portion away from the mounting seat, and the headrest is located on the front side of the chair back and is installed at one end of the pillow seat away from the connecting portion, and the bottom of the headrest is lower than the top of the chair back, so that the headrest overlaps with the upper and lower parts of the chair back.

[0009] Furthermore, the connecting part is hinged to the pillow seat; two rotating shafts opposite to each other are arranged on the pillow seat, the connecting part is provided with connecting ears sleeved on the rotating shafts, and the pillow seat is provided with multi-position fan-shaped convex teeth, and the connecting part is provided with an elastic limiter matching with the fan-shaped convex teeth.

[0010] Furthermore, the headrest is connected to the pillow seat in a liftable manner; a vertically arranged guide groove is provided in the headrest, positioning racks are provided on both sides of the guide groove, the adjustment block is cooperatively placed in the guide groove, an elastic protrusion is provided on the adjustment block, the elastic protrusion and the positioning rack are mutually engaged, a longitudinal long hole penetrating the back of the headrest is provided on the back of the guide groove, the pillow seat is provided with a sliding connecting rod, the sliding connecting rod extends from the longitudinal long hole into the guide groove and is fixedly connected to the adjustment block.

[0011] Furthermore, a concave mounting groove is provided on the surface of the headrest, the vibration massager is installed in the mounting groove, a supporting member is provided on the outer side of the vibration massager, the periphery of the supporting member cooperates with the notch edge of the mounting groove and together with the remaining surface of the headrest except the mounting groove to form a supporting surface of the headrest, the supporting member has a soft part, and the massage head of the vibration massager corresponds to the soft part.

[0012] Furthermore, the top of the chair back is a shoulder pillow, and two shoulder pillows are respectively installed on both sides of the front of the top of the chair back; the shoulder pillow is arc-shaped and both sides are bent forward.

[0013] Furthermore, there is a clothes hanging rod for hanging clothes, and the clothes hanging rod is installed on the back of the mounting seat.

[0014] The chair structure described in the utility model is provided with an adjustment chamber in the seat, and the parts required to drive the lumbar support are hidden in the adjustment chamber to protect the parts, and at the same time, the space in the seat can be more fully utilized, and the aesthetics of the chair can be improved; the lumbar support is installed at the upper end of the support rod, and the lower end is inserted into the adjustment chamber and connected to the adjustment mechanism, and the adjustment mechanism drives the support rod to move forward and backward, thereby driving the lumbar support to achieve forward and backward adjustment. This chair structure can not only better protect the parts, but also the position and size of the adjustment chamber can be more conveniently adjusted, thereby achieving more stable and larger range of adjustment, and can also better ensure the comfort of riding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the chair structure.

[0016] Figure 2 , 3 It is a schematic diagram of the connection structure of the lumbar support, the support rod and the seat.

[0017] Figure 4 , 5 It is a schematic diagram of the internal structure of the chair structure.

[0018] Figure 6 , 7 It is a partial structural diagram of the chair structure.

[0019] Figure 8-11 It is a schematic diagram of the connection structure of the headrest, the pillow base and the mounting base.

[0020] Fig.12 It is a schematic diagram of the exploded structure of the headrest. DETAILED DESCRIPTION

[0021] 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.

[0022] 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.

[0023] 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.

[0024] The utility model provides a chair structure.

[0025] The chair structure of this embodiment includes a chair back 1, a seat 2, chair legs 3 and a lumbar support 4; the seat 2 is provided with a hollow adjustment chamber, the back side of the lumbar support 4 is connected with a support rod 5, the other end of the support rod 5 is inserted into the adjustment chamber, and the adjustment chamber is provided with an adjustment mechanism for driving the support rod 5 to move.

[0026] like Figure 1-5 As shown, an adjustment compartment is provided in the seat, and the components required to drive the lumbar support are hidden in the adjustment compartment to protect the components. At the same time, the space in the seat can be more fully utilized and the aesthetics of the chair can be improved. When the lumbar support needs to be adjusted, the support rod and the lumbar support can be driven to move forward and backward through the adjustment mechanism, and the operation is convenient and quick.

[0027] The chair structure described above includes an adjustment mechanism including a driver and a movable slider 61 arranged in the adjustment chamber. The driver is connected to a screw rod 62. An adjustment nut 63 screwed to the screw rod 62 is fixedly installed on the slider 61. The support rod 5 is connected to an adjustment rod 64. One end of the adjustment rod 64 passes through the outer wall of the seat 2 and extends into the adjustment chamber to connect with the slider 61. The upper end of the support rod is installed with a lumbar support, and the lower end is connected to the adjustment rod. The adjustment rod extends into the adjustment chamber and is connected to the slider. When the lumbar support needs to be adjusted, the screw rod is driven to rotate by the driver, and the screw rod drives the slider to move along the setting direction of the adjustment chamber through the adjustment nut, thereby driving the support rod and the lumbar support to move in turn, thereby achieving adjustment. The driver includes a motor 65 installed in the seat 2 and connected to the screw rod 62, and a controller 66 installed on the side of the outer wall of the seat 2. The controller 66 controls the motor 65 to work through a circuit or wireless signal to improve the convenience of operation.

[0028] In the chair structure, the support rod 5 includes a rod body 51 connected to the lumbar support 4, and a rod seat 52 connected to the adjustment rod 64. The upper and lower ends of the rod body 51 are respectively hinged to the lumbar support 4 and the rod seat 52, so that the lumbar support can be better adapted to the human body when the position is changed. The rod body 51 is a C-shaped rod with the middle part bent backward, which has a more technological feel and can also avoid obstruction to the human body; at the same time, a guide groove 21 is opened on the back side of the seat 2, and the rod seat 52 is arranged in the guide groove 21 and moves along the guide groove 21, which can form a limit and guide, improve the stability of the adjustment and the structural strength between the components, and can also better hide the rod seat and improve the aesthetics.

[0029] In the chair structure, an adjustment box 22 with a top opening is fixedly installed in the adjustment chamber of the seat 2, a slider 61 is arranged in the adjustment box 22, two adjustment rods 64 are arranged on both sides of the adjustment box 22, and an adjustment plate 23 is provided to simultaneously connect the two adjustment rods 64 and the slider 61, and the adjustment plate 23 is provided with guide grooves for limiting and guiding the two sides of the top surface of the adjustment box 22; the adjustment box can place and protect the moving parts on one hand, and cooperate with the adjustment plate with the top edge as a guide rail on the other hand, so as to improve the structural stability and adjustment accuracy. In addition, a box cover 11 covering the top opening of the adjustment box 9 is installed in the seat 3 to further protect the parts. In addition, the horizontal height of the two adjustment rods 8 is lower than the top edge of the adjustment box 9, and the adjustment plate 10 is located at the opposite sides of the outer wall of the adjustment box, and is bent downward and connected to the adjustment rod. The bending position of the adjustment plate is the guide groove. The structure of this type of adjustment plate is simpler and can more effectively utilize the space in the seat.

[0030] In the chair structure, the slider 61 includes two slider bodies that are arranged opposite to each other and connected to each other for easy assembly and disassembly; the adjusting nut 63 is fixedly installed in the slider 61, that is, at the opposite sides of the two slider bodies, and the screw rod 62 passes through the slider 61 and is screwed to the adjusting nut 63. This structure can improve the connection strength and adjustment stability; at the same time, a guide hole is also provided in the slider 61, and the guide hole is formed by the semicircular grooves on the opposite sides of the two slider bodies. There is also a guide rod 24 fixedly installed in the seat 2, and the middle part of the guide rod 24 passes through the guide hole, thereby providing a more stable guide for the movement of the slider; and a rod sleeve 25 or a linear bearing can also be provided in the guide hole of the slider 61, and the guide rod 24 is arranged through the rod sleeve 25, thereby reducing the friction of relative movement.

[0031] like Figure 6-11 As shown, the chair structure comprises a headrest 7 and a mounting seat 8; the bottom of the mounting seat 8 is fixedly mounted on the rear side of the chair back 1, the top of the mounting seat 8 is higher than the chair back 1, and a connecting portion 81 extends forward from the top of the mounting seat 8, and a pillow seat 9 is hingedly connected to the end of the connecting portion 81 away from the mounting seat 8, and the headrest 7 is located at the front side of the chair back and mounted on the end of the pillow seat 9 away from the connecting portion, and the bottom of the headrest 7 is lower than the top of the chair back 1, so that the headrest 7 overlaps with the upper and lower parts of the chair back 1. The bottom of the headrest is located in front of the chair back and partially overlaps with the chair back in the vertical direction, which is more in line with ergonomic requirements, can adapt to the convex structure of the cervical spine while supporting the head, and can also fit the human neck more closely, while providing good support for the neck, forming a more effective support, and improving the comfort of use; at the same time, the partially overlapping chair back and headrest structure in the vertical direction also makes the force arm from the point of application of the headrest to the connection between the headrest and the chair relatively shorter, thereby reducing the moment, improving the force, and thus improving the stability and service life of the structure.

[0032] In the chair structure, the connecting part 81 is hinged with the pillow seat 9 so as to adjust the headrest to meet the needs of different groups of people; specifically, two rotating shafts 93 opposite to each other can be set on the pillow seat 9, the connecting part 81 is provided with a connecting ear 82 sleeved on the rotating shaft 93, and the pillow seat 9 is provided with a multi-position fan-shaped convex tooth 94, and the connecting part 81 is provided with an elastic limiter 83 matched with the fan-shaped convex tooth 94. At the same time, the back of the bottom of the headrest 7 is against the chair back 1 so that the headrest and the chair back are in contact, and the chair back can provide better support for the headrest. The top of the chair back 1 is a shoulder pillow 10, and the headrest 7 and the shoulder pillow 10 are both arc-shaped and the two sides are bent forward to better fit the head and shoulders of the human body. In addition, the top and bottom surfaces of the mounting seat 8 and the pillow seat 9 are both arc-shaped to ensure sufficient adjustment range.

[0033] In the chair structure, the headrest 7 is connected to the pillow seat 9 in a liftable manner. Specifically, a vertically arranged guide groove can be provided in the headrest 7, and positioning racks 71 are provided on both sides of the guide groove. An adjusting block 92 is cooperatively placed in the guide groove. An elastic protrusion is provided on the adjusting block 92, and the elastic protrusion and the positioning rack 71 are mutually engaged. A longitudinal long hole 72 penetrating the back of the headrest 7 is provided on the back of the guide groove. The pillow seat 9 is provided with a sliding connecting rod 91, and the sliding connecting rod 91 extends from the longitudinal long hole 72 into the guide groove and is fixedly connected with the adjusting block 92. By pulling the headrest or driving with a motor, the positioning rack and the longitudinal long hole are moved relative to the sliding connecting rod and the adjusting block, so that the headrest can be lifted and lowered. The components of this adjusting structure are hidden inside the headrest, which can not only ensure the structural stability and reduce the force torque of the headrest, but also have better aesthetics, working stability and longer service life.

[0034] like Fig.12 As shown, in the chair structure, a concave mounting groove 73 is provided on the surface of the headrest 7, and the vibration massager 30 is installed in the mounting groove 73. A supporting member 74 is provided on the outer side of the vibration massager 30. The periphery of the supporting member 74 cooperates with the notch edge of the mounting groove 73 and together with the remaining surface of the headrest 7 except the mounting groove 73, constitutes the supporting surface of the headrest. A soft portion 75 is provided on the supporting member 74, and the massage head of the vibration massager 30 corresponds to the soft portion 75. Since there is a soft part on the supporting member, the massage head of the vibration massage device is opposite to the soft part. When massaging the head, the soft part can fit the head to provide better flexible cushioning support for the head, and the massage comfort is better. In addition, since the vibration massage device is installed in the installation groove on the surface of the headrest, and the supporting member is arranged on the outside of the vibration massage device, at this time, the peripheral edge of the supporting member cooperates with the notch edge of the installation groove and the remaining surface of the headrest except the installation groove to form the supporting surface of the headrest. During the operation of the vibration massage device, the influence of the remaining surface of the headrest except the installation groove can be reduced, and the service life of the headrest is extended.

[0035] In the chair structure, the vibration massager 30 is a vibrator that can generate vibration when powered on, and the vibrator is a low-frequency vibrator. The supporting member 74 is a supporting plate made of soft rubber material, and the supporting plate made of soft rubber material can improve the comfort of contact between the human body and the cover plate. There are four soft parts 75, each of which corresponds to the massage head of the vibration massager 30. Since a vibrator is installed in each massage part, the massage area is increased, and the massage effect is further improved. In addition, the headrest 7 includes a headrest front frame 76, a headrest rear frame 77 and a pillow pad 78. The circuit board 79 is installed on the headrest rear frame 77 and covered by the headrest front frame 76. The key switch 70 is installed on one side of the headrest rear frame 77 for easy operation. The headrest front frame 76 is installed with a headrest pad, and the surface of the headrest pad is provided with a concave mounting groove 73 and the electric heating pad 40, the foam partition 50, the vibrator and the supporting plate are installed in sequence. A wire channel is provided in the mounting groove 73, and wires are arranged in the wire channel. The vibrator and the electric heating pad are electrically connected to the circuit board through the wires. The electric heating pad is a low-power physiotherapy electric heating pad. By adding the physiotherapy electric heating pad to generate heat, the user's blood circulation can be improved, and the massage effect can be further enhanced.

[0036] like Figure 6 , 7 As shown, in the chair structure, two shoulder pillows 10 are respectively installed on both sides of the front of the top of the chair back 1. Shoulder pillows are respectively installed on the left and right sides of the top of the chair back, corresponding to the left and right shoulders of the human body respectively. When the user leans on the shoulder pillows, the shoulder pillows on both sides are deformed due to different pressures, thereby providing appropriate support for the shoulders of the human body, which can effectively improve the comfort of use.

[0037] In the chair structure, the two shoulder pillows 10 can be provided separately, and a gap is left between the two shoulder pillows, so as to provide better support for the shoulders of the human body and meet the needs of different groups of people. The adjacent sides of the two shoulder pillows 10 can also be connected to each other as a whole, and a concave groove 101 is provided on the front of the connection part of the two shoulder pillows 10. The adjacent sides are provided as a whole to improve the aesthetics and the convenience of assembly and disassembly of the shoulder pillows. At the same time, they are separated by the grooves, and elastic cotton is installed in the two shoulder pillows respectively to ensure the support for the shoulders of the human body. In addition, the shoulder pillow 10 is an arc that bends from the center line of the chair back 1 to both sides and forward, so as to make it more in line with the sitting posture of the human body and the posture when the hands are forward, further improving the support effect and comfort of use; and the top of the chair back 1 is also an arc that is consistent with the shoulder pillow 10 to improve the aesthetics of the chair.

[0038] The chair structure has a clothes-hanging rod 20 for hanging clothes, and the clothes-hanging rod 20 is installed on the back of the mounting seat 8. This is because the indoor temperature is generally high and is not affected by bad weather. People often take off their coats after entering the room, and often hang them on the chair after taking them off. However, if they are hung in front of the chair, it will cause obstacles, and if they are hung behind the chair, they are easy to fall off. Therefore, a clothes-hanging rod is arranged behind the mounting seat, which can conveniently and stably hang clothes and avoid obstacles to users. A plurality of through holes are opened in the middle of the clothes-hanging rod 20 and the mounting seat 8, and screw holes are opened on the chair back 1 at the positions corresponding to the through holes. The fixing bolts pass through the through holes and are locked with the screw holes, so that the clothes-hanging rod is stably fixed on the mounting seat. In addition, a concave platform can be provided on the back of the clothes-hanging rod 20, and the through holes are arranged at the concave platform. There is also a decorative cover 201 covering the concave platform, so as to improve the aesthetics, and the decorative cover 201 can be detachably installed on the mounting seat 8 by buckles, so as to facilitate installation and removal.

[0039] 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 structure, comprising a chair back (1), a chair seat (2), chair legs (3) and a lumbar support (4), characterized in that: The seat (2) is provided with a hollow adjustment chamber, the lumbar support and the backrest are arranged separately, the back side of the lumbar support (4) is connected with a support rod (5), the other end of the support rod (5) is inserted into the adjustment chamber, and an adjustment mechanism for driving the support rod (5) to move is provided in the adjustment chamber; the adjustment mechanism includes a driver and a movable slider (61) arranged in the adjustment chamber, the driver is connected with a screw rod (62), and an adjustment nut (63) threadedly connected to the screw rod (62) is fixedly mounted on the slider (61); the support rod (5) is connected with an adjustment rod (64), one end of the adjustment rod (64) passes through the outer wall of the seat (2) and extends into the adjustment chamber to be connected with the slider (61).

2. The chair structure according to claim 1, characterized in that: An adjustment box (22) with a top opening is fixedly installed in the adjustment chamber of the seat (2), a slider (61) is arranged in the adjustment box (22), two adjustment rods (64) are respectively arranged on both sides of the adjustment box (22), and an adjustment plate (23) is also provided which is connected to the two adjustment rods (64) and the slider (61), and the adjustment plate (23) is provided with guide grooves which are mutually limited and guided with the two side edges of the top surface of the adjustment box (22).

3. The chair structure according to claim 1, characterized in that: The support rod (5) comprises a rod body (51) connected to the waist support (4), and a rod seat (52) connected to the adjustment rod (64); the upper and lower ends of the rod body (51) are respectively hinged to the waist support (4) and the rod seat (52).

4. The chair structure according to claim 1, characterized in that: The chair further comprises a headrest (7) and a mounting seat (8); the back of the bottom of the headrest (7) abuts against the chair back (1); the bottom of the mounting seat (8) is fixedly mounted on the rear side of the chair back (1), the top of the mounting seat (8) is higher than the chair back (1), and a connecting portion (81) extends forward from the top of the mounting seat (8), an end of the connecting portion (81) away from the mounting seat (8) is hingedly connected to a pillow seat (9), the headrest (7) is located on the front side of the chair back and is mounted on an end of the pillow seat (9) away from the connecting portion, the bottom of the headrest (7) is lower than the top of the chair back (1), so that the headrest (7) and the upper and lower parts of the chair back (1) overlap.

5. The chair structure according to claim 4, characterized in that: The connecting portion (81) is hingedly connected to the pillow seat (9); two rotating shafts (93) are arranged on the pillow seat (9) at two opposite sides; the connecting portion (81) is provided with a connecting ear (82) sleeved on the rotating shaft (93); the pillow seat (9) is provided with a multi-position fan-shaped convex tooth (94); and the connecting portion (81) is provided with an elastic limiter (83) matched with the fan-shaped convex tooth (94).

6. The chair structure according to claim 4, characterized in that: The headrest (7) is connected to the pillow seat (9) in a liftable manner; a vertically arranged guide groove is provided in the headrest (7); positioning racks (71) are provided on both sides of the guide groove; an adjustment block (92) is cooperatively placed in the guide groove; an elastic protrusion is provided on the adjustment block (92); the elastic protrusion and the positioning rack (71) are mutually engaged; a longitudinal long hole (72) penetrating the back of the headrest (7) is provided at the back of the guide groove; the pillow seat (9) is provided with a sliding connecting rod (91); the sliding connecting rod (91) extends from the longitudinal long hole (72) into the guide groove and is fixedly connected to the adjustment block (92).

7. The chair structure according to claim 4, 5 or 6, characterized in that: The headrest (7) is provided with a concave mounting groove (73) on its surface, the vibration massager (30) is installed in the mounting groove (73), a supporting member (74) is provided on the outer side of the vibration massager (30), the peripheral edge of the supporting member (74) cooperates with the notch edge of the mounting groove (73) and together with the remaining surface of the headrest (7) except the mounting groove (73) forms a supporting surface of the headrest, the supporting member (74) is provided with a soft portion (75), and the massage head of the vibration massager (30) corresponds to the soft portion (75).

8. The chair structure according to any one of claims 1 to 6, characterized in that: The top of the chair back (1) is a shoulder pillow (10), and two shoulder pillows (10) are respectively installed on both sides of the front side of the top of the chair back (1); the shoulder pillows (10) are arc-shaped and both sides are bent forward.

9. The chair structure according to any one of claims 1 to 6, characterized in that: The chair also includes a clothes hanging rod (20) for hanging clothes, and the clothes hanging rod (20) is installed on the back of the mounting seat (8).

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