Ergonomic seat
By designing the seat and foot pedal to be removable and connected in the child seat and adjusting its inclination, the problem of the seat cannot adapt to the body shape changes during the growth process of children in the prior art is solved, and more stable support and Adaptation effect.
Patent Information
- Application Number
- CN202420935835.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing child seats cannot effectively adapt to changes in body shape during the growth of children, resulting in the inability to stabilize the support of the feet. In the existing technology, the seat and the foot pedal are adjusted along the same inclination, resulting in the foot pedal sliding forward too long and unable to Provide effective support.
The chair seat and the foot pedal are designed to be detachably connected to the seat support part and the foot pedal support part respectively. The inclination of the chair seat support part with respect to the horizontal plane is smaller than the foot pedal support part, which increases the inclination angle of the foot pedal support part and ensures the foot pedal. When adjusting in the vertical direction, do not move forward too much, and maintain stable support.
The position changes of the seat and foot pedal are more in line with the changes in the shape of children, ensuring that the feet are always supported during the growth process, and improving the stability and adaptability of the seat.
Smart Images
Figure CN222237259U_ABST
Abstract
Description
Technical Field
[0001] The utility model generally relates to the technical field of seats, and in particular to an ergonomic chair. Background Art
[0002] As is known to all, children grow up quickly. In order to adapt to the body shape of children, a child chair with adjustable seat and footrest has appeared on the market. This type of chair has a vertical column connected to the chair legs, and the rear sides of the seat and footrest are sleeved on the column through sleeves, and can slide and adjust in the vertical direction along the column. Children can adjust the height of the seat and footrest according to their own body shape.
[0003] However, as children grow, their thighs and calves will grow longer. When children sit on the seat, the height of their feet from the ground will not only gradually decrease, but also the horizontal distance between their feet and the seat will continue to increase. This means that if the seat and footrest can only be adjusted in vertical height, the child's feet will be in front of the footrest and cannot step on the footrest after growing up, thus failing to provide stable support for the child.
[0004] In order to solve the above problems, the existing patent provides an adjustable seat (application number: 202321306066.4), by tilting the seat frame, the footrest and the seat can be detachably connected to the seat frame, so that when the footrest and the seat are adjusted along the length direction of the seat frame, they can not only move up or down in the vertical direction, but also move forward or backward in the horizontal direction synchronously. In addition, the seat can slide forward and backward relative to the backrest to adjust the seat depth. Not only can it adapt to the vertical and horizontal position changes of the child's feet after growth, but also the seat structure is simple.
[0005] However, for children, the amount of change in various parts of their body during their growth process is not the same. According to big data statistics, when the height of the desktop is fixed at 75cm, a child with a height of 110cm needs a seat depth of 29cm, a seat height of 55cm, and a footrest height of 26cm when sitting upright; a child with a height of 150cm needs a seat depth of 40cm, a seat height of 46cm, and a footrest height of 9cm when sitting upright. From this data, it can be seen that when a child grows from 110cm to 150cm, the change in the required seat height is smaller than the change in the footrest height. When adjusting the footrest and seat position, the footrest needs to be adjusted downward a longer distance than the seat. If the seat and footrest are adjusted along the same inclination of the seat frame, as shown in the attached figure Figure 4As shown, when a child grows from 110cm to 150cm, the seat needs to be adjusted down four levels, and the footrest needs to be adjusted down seven levels. The downward adjustment distance of the footrest is greater than the seat; the footrest will also slide forward a longer distance in the horizontal direction. The horizontal distance L1 between the front seat and the front end of the footrest after adjustment is smaller than the horizontal distance L2 between the front seat and the front end of the footrest after adjustment. As a result, when the child's feet naturally droop, the footrest is located in front of the feet and cannot provide effective support for the child. If the seat is slid forward at this time to allow the feet to step on the footrest again, the seat depth will be too long and the child's back will not fit the backrest. Therefore, the above-mentioned adjustable seat cannot adapt to the changes in the child's body shape and is not ergonomic. Summary of the invention
[0006] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide an ergonomic chair, in which the seat and the footrest are respectively detachably connected to the seat support part and the footrest support part, and the inclination of the seat support part relative to the horizontal plane is smaller than the inclination of the footrest support part relative to the horizontal plane; to put it in a more figurative way, such a design increases the inclination angle of the footrest support part relative to the horizontal plane, which is like the seat support part is adjusted in the up and down directions in the previous way, especially when adjusting from high to low, the footrest support part is also converted from a high position to a low position, but its position in the horizontal direction is no longer as large as before, so it is kept as close to the front end of the seat in the horizontal direction as possible to ensure that the child's feet can always be supported by the footrest during the adjustment process, so that the position changes of the seat and the footrest are more in line with the changes in the child's body shape and in line with ergonomics.
[0007] The effect of the utility model is achieved in this way:
[0008] The present application provides an ergonomic chair, comprising two chair legs symmetrically arranged on the left and right, and a seat and a footrest detachably arranged between the two chair legs, each side of the chair leg comprising a seat support portion and a footrest support portion connected up and down, the seat is connected to the seat support portion through a first gear adjustment mechanism, and the footrest is connected to the footrest support portion through a second gear adjustment mechanism, the first gear adjustment mechanism is configured to adjust the position of the seat on the seat support portion, and the second gear adjustment mechanism is configured to adjust the position of the footrest on the footrest support portion; the seat support portion and the footrest support portion are both inclined forward and downward, and the inclination of the seat support portion relative to the horizontal plane is smaller than the inclination of the footrest support portion relative to the horizontal plane.
[0009] Furthermore, the inclination of the seat support part relative to the horizontal plane is 40-65°, and the inclination of the footrest support part relative to the horizontal plane is 60-80°. This not only ensures that after the footrest is adjusted to a longer distance in the vertical direction, the horizontal distance between the footrest and the seat will not change significantly, but also ensures that the overall inclination of the chair legs will not be too large or too small, thereby preventing the center of gravity of the seat from deviating from the support area of the chair legs, resulting in poor seat stability.
[0010] Furthermore, the distance from the ground during the adjustment of the seat is 45-55 cm, and the distance from the ground during the adjustment of the footrest is 9-24 cm, so that the adjustment range of the seat and the footrest meets the body shape variation range of children with a height of 110 cm to 150 cm, which is ergonomic.
[0011] Furthermore, the first gear adjustment mechanism includes a first bayonet and a first slot, the first bayonet is provided in one of the seat and the seat support, and the first slot is provided in the other of the seat and the seat support. The gear adjustment between the seat and the seat support is achieved by means of a bayonet fit, which not only increases the connection strength between the seat and the seat support, but also makes the installation and disassembly operations between the two very simple.
[0012] Furthermore, a first connection part is provided on both the left and right sides of the seat, the first connection part is a semi-enclosed structure with an opening at the front side, and the first connection part includes a limiting groove formed by a depression in the middle; the inner side surface of the seat support part is arranged with a plurality of first card slots along the length direction, and the first card pin is provided on the groove wall in the limiting groove that fits the inner side surface of the seat support part. The seat support part is fixed by the first connection part and cannot be offset to the left and right directions, so that the seat can also be used as a crossbeam of the chair legs, which can ensure the parallelism of the chair legs on both sides, thereby effectively improving the stability of the seat.
[0013] Furthermore, a knob screw is provided on the first connection part, a first connection hole is provided at the rear end of the first connection part, and a first threaded hole is provided at a position near the first slot on the rear side surface of the seat support part. When the first connection part and the seat support part are fitted, the knob screw passes through and is screwed into the first connection hole and the first threaded hole. The knob screw is configured to lock or loosen the first connection part and the seat support part. The knob screw is provided to further lock and fix the first connection part and the seat support part, thereby further improving the stability of the seat after connection.
[0014] Furthermore, the rear opening of the first slot is arranged so that the first latch can be inserted into the first slot from the opening. When the seat is inserted between the seat support parts from the back to the front, the first latch can also be inserted into the rear opening of the first slot along the seat insertion direction, further improving the convenience of the seat installation operation.
[0015] Furthermore, the second gear adjustment mechanism includes a second bayonet and a second bayonet slot, the second bayonet pin is provided in one of the pedal and the pedal support portion, and the second bayonet slot is provided in the other of the pedal and the pedal support portion. The gear adjustment between the pedal and the pedal support portion is achieved by means of a bayonet fit, which not only increases the connection strength between the pedal and the pedal support portion, but also makes the installation and disassembly operations between the two very simple.
[0016] Furthermore, the left and right side walls of the pedal extend upward to form a second connection part, and the second connection part extends a first limit part in the width direction away from the pedal, the first limit part is a U-shaped plate-like structure, the vacant part surrounded by the middle of the first limit part is the second clamping groove, and the opening of the first limit part is arranged downward; the rear end of the pedal also extends the second limit part to the left and right sides, and when the pedal is connected to the pedal support part, the second limit part abuts against the rear end of the pedal support part, so that the pedal maintains a stable support state. By setting the second clamping groove on the first limit part extending upward, the vertical position of the rotation fulcrum of the pedal is higher, and the resistance arm between the rotation fulcrum and the second limit part becomes longer, so that when the front end of the pedal is pressed, the pressure on the second limit part is smaller, and the strength requirement for the second limit part is lower, thereby improving the stability of the support of the pedal.
[0017] Furthermore, the first limiting part includes a top plate, a side plate extends downward from the front end of the top plate, and the second limiting part is formed at the rear end of the top plate and is arranged opposite to the side plate at a distance, and the second limiting part extends outwardly beyond the top plate along the width direction of the pedal to abut against the rear end of the pedal support part; the side plate, the second limiting part, the top plate and the second connecting part are integrally formed, making the overall structure of the pedal simpler and more integrated, not only beautiful, but also convenient for mold casting.
[0018] Furthermore, the seat comprises a seat plate and a sliding support member connected up and down, the sliding support member extends to the left and right sides to form a first connection portion; a sliding groove extending in the front-back direction is provided at the top of the sliding support member, and a slider is provided at the bottom of the seat plate, and the slider and the sliding groove are slidably matched, so that the seat plate can slide forward and backward relative to the sliding support member. By slidingly matching the seat plate and the sliding support member, the seat depth of the seat can be adjusted by sliding the seat plate forward and backward.
[0019] Furthermore, the sliding support is provided with a plurality of second connection holes, and the bottom end of the seat plate is provided with a plurality of second threaded holes, and the second connection holes are aligned with the second threaded holes and screwed in to fix the seat plate and the sliding support relatively. The sliding support and the seat plate are connected and fixed by screws, which ensures the connection strength between the two and makes the locking operation between the two simple and convenient.
[0020] The ergonomic chair provided by the present application allows children to adjust the positions of the seat and the footrest according to their own physical conditions by detachably connecting the seat and the footrest to the seat support part and the footrest support part respectively. During the growth of the child, the change of the footrest in the vertical direction needs to be longer than the change of the seat in the vertical direction. Since the inclination of the seat support part relative to the horizontal plane is smaller than the inclination of the footrest support part relative to the horizontal plane, the inclination angle of the footrest support part relative to the horizontal plane is increased. Compared with the previous adjustment method, when the footrest support part and the seat support part are adjusted up and down, especially from high to low, the footrest support part also switches from a high position to a low position, but its position in the horizontal direction is no longer as large as before. Therefore, it is kept as close to the front end of the seat in the horizontal direction as possible to ensure that the child's feet can always be supported by the footrest during the adjustment process, so that the position changes of the seat and the footrest are more in line with the changes in the child's body shape and in line with ergonomics. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:
[0022] Figure 1 A schematic diagram of the three-dimensional structure of an ergonomic chair provided in an embodiment of the present application;
[0023] Figure 2 A schematic diagram of the back structure of the ergonomic chair provided in an embodiment of the present application;
[0024] Figure 3 A schematic diagram of the three-dimensional structure of a chair leg provided in an embodiment of the present application;
[0025] Figure 4 It is a schematic diagram of the position change of the seat and the footrest when the chair legs are all at the same inclination in the prior art;
[0026] Figure 5 A schematic diagram of the side structure of a seat provided in an embodiment of the present application when the chair legs and footrest are in the highest position;
[0027] Figure 6 A schematic diagram of the side structure of a seat provided in an embodiment of the present application when the chair legs and footrest are in the lowest position;
[0028] Figure 7 A schematic diagram of the connection structure between the footrest and the seat provided in an embodiment of the present application;
[0029] Figure 8 A schematic diagram of the connection structure between the seat and the chair provided in an embodiment of the present application;
[0030] Fig. 9 A schematic diagram of the internal structure of a chair seat provided in an embodiment of the present application;
[0031] Fig.10 A schematic diagram of the three-dimensional structure of the pedal provided in an embodiment of the present application.
[0032] The figures are marked as follows: 1-chair leg, 110-chair seat support part, 111-first slot, 112-first threaded hole, 120-foot support part, 121-second pin, 2-chair seat, 210-first connecting part, 211-limiting slot, 212-first pin, 213-first connecting hole, 220-knob screw, 230-seat plate, 231-sliding block, 232-second threaded hole, 240-sliding support member, 241-sliding slot, 242-second connecting hole, 3-foot pedal, 310-second connecting part, 311-second slot, 312-first limiting part, 313-top plate, 314-side plate, 320-second limiting part, 4-back bracket, 410-backrest, 5-chair foot. DETAILED DESCRIPTION
[0033] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.
[0034] Please refer to the attached Figure 1-10 The embodiment of the present application provides an ergonomic chair, including two chair legs 1 symmetrically arranged on the left and right, and a seat 2 and a footrest 3 detachably arranged between the two chair legs 1, each side of the chair leg 1 includes a seat support part 110 and a footrest support part 120 connected up and down, the seat 2 is connected to the seat support part 110 through a first gear adjustment mechanism, and the footrest 3 is connected to the footrest support part 120 through a second gear adjustment mechanism, the first gear adjustment mechanism is configured to adjust the position of the seat 2 on the seat support part 110, and the second gear adjustment mechanism is configured to adjust the position of the footrest 3 on the footrest support part 120; the seat support part 110 and the footrest support part 120 are both inclined toward the front and downward, and the inclination of the seat support part 110 relative to the horizontal plane is smaller than the inclination of the footrest support part 120 relative to the horizontal plane.
[0035] In this embodiment, by detachably connecting the seat 2 and the footrest 3 to the seat support portion 110 and the footrest support portion 120 respectively, the child can adjust the position of the seat 2 and the footrest 3 according to his or her own physical condition; during the growth of the child, the change amount of the footrest 3 in the vertical direction needs to be longer than the change amount of the seat 2 in the vertical direction. Since the inclination of the seat support portion 110 relative to the horizontal plane is smaller than the inclination of the footrest support portion 120 relative to the horizontal plane, the inclination angle of the footrest support portion 120 relative to the horizontal plane is increased. Compared with the previous adjustment method, when the footrest support portion 120 and the seat support portion 110 are adjusted up and down, especially when adjusted from high to low, the footrest support portion 120 is also converted from a high position to a low position, but its horizontal position is no longer as large as before. Therefore, it is as close to the front end of the seat 2 in the horizontal direction as possible to ensure that the child's feet can always be supported by the footrest 3 during the adjustment process, so that the position change of the seat 2 and the footrest 3 is more in line with the child's body shape changes and ergonomic.
[0036] Among them, the top ends of the chair legs 1 on both sides extend and converge to form a back support 4, and the back support 4 is configured to install a backrest 410; the seat also includes two left-right symmetrical chair feet 5, and the bottom ends of the chair legs 1 are connected to the front ends of the chair feet 5; therefore, the structure of the ergonomic seat is relatively simple, rich in simple beauty and good stability.
[0037] In some embodiments of the present application, the inclination of the seat support portion 110 relative to the horizontal plane is 40-65°, and the inclination of the footrest support portion 120 relative to the horizontal plane is 60-80°. This not only ensures that after the footrest 3 is adjusted to a longer distance in the vertical direction, the horizontal distance between the footrest 3 and the seat 2 will not change significantly, but also ensures that the overall inclination of the chair leg 1 will not be too large or too small, thereby preventing the center of gravity of the seat from deviating from the support area of the chair leg 5, resulting in poor seat stability.
[0038] Among them, preferably, the inclination of the seat support part 110 relative to the horizontal plane is 45-60°, and the inclination of the footrest support part 120 relative to the horizontal plane is 70-80° to ensure that the position changes of the seat 2 and the footrest 3 are in line with the changes in the child's body shape and do not affect the stability of the seat.
[0039] In some embodiments of the present application, the distance between the seat 2 and the ground during adjustment is 45-55 cm, and the distance between the footrest 3 and the ground during adjustment is 9-24 cm. The adjustment range of the seat 2 and the footrest 3 is in accordance with the body shape variation range of children with a height between 110 cm and 150 cm, which is ergonomic.
[0040] In some embodiments of the present application, the first gear adjustment mechanism includes a first bayonet 212 and a first slot 111, wherein the first bayonet 212 is disposed in one of the seat 2 and the seat support 110, and the first slot 111 is disposed in the other of the seat 2 and the seat support 110. The gear adjustment between the seat 2 and the seat support 110 is achieved by the snap-fitting manner of the first bayonet 212 and the first slot 111, which not only makes the connection strength between the seat 2 and the seat support 110 higher, but also makes the installation and disassembly operations between the two very simple.
[0041] In some embodiments of the present application, a first connecting portion 210 is provided on both sides of the left and right sides of the seat 2, and the first connecting portion 210 is a semi-enclosed structure with an opening on the front side, and the first connecting portion 210 includes a limiting groove 211 formed by a depression in the middle; the inner side surface of the seat support portion 110 is arranged with a plurality of first card grooves 111 along the length direction, and the first card pin 212 is provided on the groove wall in the limiting groove 211 that fits the inner side surface of the seat support portion 110.
[0042] In this embodiment, both sides of the seat 2 embrace the seat support portion 110 through the first connection portion 210, so that the seat support portion 110 is fixed by the first connection portion 210 and cannot be offset to the left or right direction, so that the seat 2 can also serve as a crossbeam of the chair legs 1, which can prevent the chair legs 1 from being distorted to the left or right due to pressure caused by long-term use, and the inconsistent spacing between the chair legs 1 on both sides in the vertical direction, which in turn makes the seat 2 unable to be installed in other gears; therefore, by setting the first connection portion 210, the parallelism of the chair legs 1 on both sides can be guaranteed, thereby effectively improving the stability of the seat.
[0043] Preferably, three first slots 111 are provided on the inner side of the seat support portion 110, so that the seat 2 has three adjustable gears to meet the needs of customers. Of course, in other embodiments of the present application, the number of first slots 111 on the seat support portion 110 can also be four, five, etc.
[0044] Preferably, the cross-sections of the first latch 212 and the first slot 111 are both square structures, so that the first latch 212 cannot rotate after being inserted into the first slot 111, and has good stability. Of course, in other embodiments of the present application, the cross-sections of the first latch 212 and the first slot 111 can also be triangular, elliptical, etc.
[0045] In some embodiments of the present application, a knob screw 220 is further provided on the first connecting portion 210, a first connecting hole 213 is opened at the rear end of the first connecting portion 210, and a first threaded hole 112 is opened on the rear side surface of the seat support portion 110 near the first slot 111. When the first connecting portion 210 and the seat support portion 110 are in contact with each other, the knob screw 220 passes through and is screwed into the first connecting hole 213 and the first threaded hole 112. The knob screw 220 is configured to lock or loosen the first connecting portion 210 and the seat support portion 110.
[0046] In this embodiment, the first connection part 210 and the seat support part 110 are further locked and fixed by setting a knob screw 220, thereby further improving the stability of the seat 2 after connection; and the tightness between the first connection part 210 and the seat support part 110 can be adjusted by turning the knob screw 220, and the adjustment operation is relatively simple.
[0047] In some embodiments of the present application, the rear opening of the first slot 111 is provided so that the first latch 212 can be inserted into the first slot 111 from the opening. When the seat 2 is inserted between the seat support parts 110 from the back to the front, the first latch 212 can also be inserted from the opening of the rear side of the first slot 111 along the direction of insertion of the seat 2, further improving the convenience of the seat 2 installation operation.
[0048] The first latch 212 and the first slot 111 are both tilted forward and downward, so that when the seat 2 is pressed, the first latch 212 can follow the inclined surface of the first slot 111 to be inserted forward and downward, preventing the first latch 212 from falling out of the opening at the rear side of the first slot 111. The stability of the seat 2 is effectively improved, and the first latch 212 is prevented from falling out of the opening at the rear side of the first slot 111 when the user sits down, causing the seat 2 to fall off the seat support portion 110.
[0049] The width of the rear opening of the first slot 111 is greater than the width of the front end of the first slot 111. By setting the rear opening of the first slot 111 wider, it is convenient for the user to align the first latch 212 with the opening of the first slot 111 during the installation of the seat 2, further improving the convenience of the installation operation of the seat 2.
[0050] In some embodiments of the present application, the second gear adjustment mechanism includes a second bayonet 121 and a second slot 311, wherein the second bayonet 121 is provided in one of the pedal 3 and the pedal support 120, and the second slot 311 is provided in the other of the pedal 3 and the pedal support 120. The gear adjustment between the pedal 3 and the pedal support 120 is achieved by the engagement of the second bayonet 121 and the second slot 311, which not only increases the connection strength between the pedal 3 and the pedal support 120, but also makes the installation and disassembly operations between the two very simple.
[0051] In some embodiments of the present application, the left and right side walls of the pedal 3 extend upward to form a second connecting portion 310, and the second connecting portion 310 extends to have a first limiting portion 312 in the width direction away from the pedal 3. The first limiting portion 312 is a U-shaped plate structure, and the vacant portion surrounded by the middle of the first limiting portion 312 is a second slot 311, and the opening of the first limiting portion 312 is set downward; the rear end of the pedal 3 also extends a second limiting portion 320 to the left and right sides, and when the pedal 3 is connected to the pedal support portion 120, the second limiting portion 320 abuts against the rear end of the pedal support portion 120, thereby allowing the pedal 3 to maintain a stable support state.
[0052] In this embodiment, the pedal 3 can be regarded as a lever with the second bayonet 121 as the fulcrum. When the pedal 3 supports the user's foot, the front end of the pedal 3 is compressed and has a tendency to rotate downward around the second bayonet 121, so that the second limit portion 320 at the rear side of the second bayonet 121 is subjected to an upward rotation force. Since the power arm between the front end of the pedal 3 and the second bayonet 121 is longer than the resistance arm between the second limit portion 320 and the second bayonet 121, the pressure on the second limit portion 320 is relatively large, and the second limit portion 320 needs to have sufficient strength to withstand the pressure; by arranging the second slot 311 on the first limit portion 310 extending upward, the vertical position of the rotation fulcrum of the pedal 3 is higher, and the resistance arm between the rotation fulcrum and the second limit portion 320 becomes longer, so that when the front end of the pedal 3 is compressed, the pressure on the second limit portion 320 is smaller, and the strength requirement for the second limit portion 320 is lower, thereby improving the support stability of the pedal 3.
[0053] Among them, the first limiting portion 312 is a U-shaped structure with an opening at the lower end, so that during the installation and disassembly of the pedal 3, the second latch 121 can be directly inserted into or removed from the opening at the lower end of the first limiting portion 312, further improving the convenience of the installation and disassembly operations; and when the pedal 3 is under pressure, the first limiting portion 312 has a tendency to move downward relative to the second latch 121. By having an opening at the lower end of the first limiting portion 312, it is also possible to prevent the second latch 121 from slipping out of the opening of the first limiting portion 312 during the support process, thereby affecting the support performance of the pedal 3.
[0054] Preferably, three second latches 121 are provided on the pedal support portion 120 on each side, so that the pedal 3 has three adjustable gears to meet the usage needs of customers. Of course, in other embodiments of the present application, the number of second latches 121 provided on the pedal support portion 120 can also be four, five, six, etc.
[0055] In some embodiments of the present application, the first limiting portion 312 includes a top plate 313, a side plate 314 extends downward from the front end of the top plate 313, and the second limiting portion 320 is formed at the rear end of the top plate 313 and is spaced and arranged opposite to the side plate 314. The second limiting portion 320 extends outwardly beyond the top plate 313 along the width direction of the pedal 3 to abut against the rear end of the pedal support portion 120; the side plate 314, the second limiting portion 320, the top plate 313 and the second connecting portion 310 are integrally formed. This makes the overall structure of the pedal 3 simpler and more integrated, not only beautiful, but also convenient for mold casting.
[0056] In some embodiments of the present application, the chair seat 2 includes a seat plate 230 and a sliding support member 240 spliced together from top to bottom, the sliding support member 240 extends to the left and right sides to form a first connecting portion 210; a sliding groove 241 extending along the front-to-back direction is provided at the top of the sliding support member 240, and a sliding block 231 is provided at the bottom end of the seat plate 230, and the sliding block 231 and the sliding groove 241 are slidably matched, so that the seat plate 230 can slide forward and backward relative to the sliding support member 240.
[0057] In this embodiment, by sliding the seat plate 230 and the sliding support member 240 together, the seat depth of the seat 2 can be adjusted by sliding the seat plate 230 forward and backward. The user can choose a suitable seat depth according to his or her body shape to ensure the support effect of the seat 2.
[0058] In some embodiments of the present application, the sliding support member 240 is provided with a plurality of second connecting holes 242, and the bottom end of the seat plate 230 is provided with a plurality of second threaded holes 232. The second connecting holes 242 are aligned with the second threaded holes 232 and screwed in to fix them, so that the seat plate 230 and the sliding support member 240 are relatively fixed.
[0059] In this embodiment, the sliding support member 240 and the seat plate 230 are connected and fixed by screws, which ensures the connection strength between the two and makes the locking operation between the two simple and convenient.
[0060] Among them, four second connecting holes 242 distributed along the four corners are opened on the sliding support 240, and eight second threaded holes 232 are opened at the bottom end of the seat plate 230, so that when the seat plate 230 slides back and forth relative to the sliding support 240, the second threaded holes 232 can be aligned with the second connecting holes 242 and locked by screws.
[0061] It should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used above to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means more than three.
[0062] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.
Claims
1. An ergonomic chair, characterized in that: The invention comprises two chair legs (1) symmetrically arranged on the left and right, and a seat (2) and a footrest (3) detachably arranged between the two chair legs (1), wherein each side of the chair leg (1) comprises a seat support portion (110) and a footrest support portion (120) connected to each other up and down, the seat (2) being connected to the seat support portion (110) via a first gear adjustment mechanism, and the footrest (3) being connected to the footrest support portion (120) via a second gear adjustment mechanism, the first gear adjustment mechanism being configured to adjust the position of the seat (2) on the seat support portion (110), and the second gear adjustment mechanism being configured to adjust the position of the footrest (3) on the footrest support portion (120); the seat support portion (110) and the footrest support portion (120) are both arranged to be inclined forward and downward, and the inclination of the seat support portion (110) relative to the horizontal plane is smaller than the inclination of the footrest support portion (120) relative to the horizontal plane.
2. The ergonomic chair according to claim 1, characterized in that: The inclination of the seat support portion (110) relative to the horizontal plane is 40-65 degrees, and the inclination of the footrest support portion (120) relative to the horizontal plane is 60-80 degrees.
3. The ergonomic chair according to claim 1, characterized in that: The distance between the seat (2) and the ground during adjustment is 45-55 cm, and the distance between the footrest (3) and the ground during adjustment is 9-24 cm.
4. The ergonomic chair according to claim 1, characterized in that: The first gear adjustment mechanism comprises a first latch (212) and a first latch groove (111), wherein the first latch pin (212) is arranged on one of the seat (2) and the seat support portion (110), and the first latch groove (111) is opened on the other of the seat (2) and the seat support portion (110).
5. The ergonomic chair according to claim 4, characterized in that: The first connecting portion (210) is provided on both left and right sides of the seat (2); the first connecting portion (210) is a semi-enclosed structure with an opening at the front side; the first connecting portion (210) comprises a limiting groove (211) formed by a depression in the middle; the inner side surface of the seat support portion (110) is provided with a plurality of the first locking grooves (111) arranged along the length direction; the first locking pin (212) is provided in the limiting groove (211) on a groove wall that fits the inner side surface of the seat support portion (110).
6. The ergonomic chair according to claim 5, characterized in that: A knob screw (220) is also provided on the first connecting portion (210), a first connecting hole (213) is provided at the rear end of the first connecting portion (210), and a first threaded hole (112) is provided on the rear side surface of the seat support portion (110) near the first slot (111). When the first connecting portion (210) and the seat support portion (110) are in contact with each other, the knob screw (220) passes through and is screwed into the first connecting hole (213) and the first threaded hole (112). The knob screw (220) is configured to lock or loosen the first connecting portion (210) and the seat support portion (110).
7. The ergonomic chair according to claim 4, characterized in that: The rear opening of the first card slot (111) is arranged so that the first card pin (212) can be inserted into the first card slot (111) from the opening.
8. The ergonomic chair according to claim 1, characterized in that: The second gear adjustment mechanism comprises a second latch pin (121) and a second latch slot (311), wherein the second latch pin (121) is arranged on one of the pedal (3) and the pedal support portion (120), and the second latch slot (311) is opened on the other of the pedal (3) and the pedal support portion (120).
9. The ergonomic chair according to claim 8, characterized in that: The left and right side walls of the pedal (3) extend upward to form a second connecting portion (310); the second connecting portion (310) extends in a width direction away from the pedal (3) to form a first limiting portion (312); the first limiting portion (312) is a U-shaped plate-like structure; a vacant portion surrounded by the middle of the first limiting portion (312) is the second clamping groove (311); and the opening of the first limiting portion (312) is arranged downward; the rear end of the pedal (3) also extends to the left and right sides to form a second limiting portion (320); when the pedal (3) is connected to the pedal support portion (120), the second limiting portion (320) abuts against the rear end of the pedal support portion (120), thereby maintaining the pedal (3) in a stable supporting state.
10. The ergonomic chair according to claim 9, characterized in that: The first limiting portion (312) comprises a top plate (313), a side plate (314) extending downwardly from the front end of the top plate (313), the second limiting portion (320) being formed at the rear end of the top plate (313) and arranged opposite to the side plate (314) at a distance, the second limiting portion (320) extending outwardly from the top plate (313) along the width direction of the pedal (3) to abut against the rear end of the pedal support portion (120); the side plate (314), the second limiting portion (320), the top plate (313) and the second connecting portion (310) are integrally formed.
11. The ergonomic chair according to claim 1, characterized in that: The chair seat (2) comprises a seat plate (230) and a sliding support member (240) connected in an upper and lower manner, wherein the sliding support member (240) extends toward left and right sides to form a first connecting portion (210); a sliding groove (241) extending in a front-to-back direction is provided at the top end of the sliding support member (240), and a sliding block (231) is provided at the bottom end of the seat plate (230); the sliding block (231) and the sliding groove (241) are slidably matched, so that the seat plate (230) can slide forward and backward relative to the sliding support member (240).
12. The ergonomic chair according to claim 11, characterized in that: The sliding support member (240) is provided with a plurality of second connection holes (242), and the bottom end of the seat plate (230) is provided with a plurality of second threaded holes (232). The second connection holes (242) are aligned with the second threaded holes (232) and screws are screwed in to fix them, so that the seat plate (230) and the sliding support member (240) are relatively fixed.