Seat adjusting structure and adjusting seat
Through the combined structure of the support frame, limiting parts and adjusting parts, the problems of high cost and heavy weight of the seat cushion are solved, and the comfort adjustment of the seat cushion is achieved, which avoids sliding of the lower limbs and reduces production costs.
Patent Information
- Application Number
- CN202422218523.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The cushion of the existing seats has high cost and high weight, which is not conducive to movement. When the angle between the backrest and the cushion increases, the user's lower limbs are prone to slide, affecting the comfort level.
The combined structure of the support frame, limiting parts and adjusting parts is adopted. The adjusting parts remain in a support state when working normally and the cushion remains horizontal. When rest is required, the adjusting parts switch to the adjustment state, the cushion rotates downward, the limiting parts abut the support part, and the rear part of the cushion is tilted to avoid sliding of the lower limbs.
Improves user comfort, simple structure, does not increase seat weight, saves production costs, and does not require a drive, making it easy to operate.
Smart Images
Figure CN223183192U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of seat adjustment, and more specifically, relates to a seat adjustment structure and an adjustment seat. Background Art
[0002] A chair is a piece of furniture with a cushion and backrest, and some chairs also have armrests. With the development and continuous improvement of material living standards, multifunctional chairs are becoming increasingly common in daily life. Whether working, studying, or relaxing, chairs are needed. However, maintaining the same sitting posture for long periods of time can have adverse effects on human health. Consequently, people are increasingly demanding chairs that provide both health and comfort.
[0003] The seats in the prior art generally achieve state adjustment by adjusting the angle of the backrest. Usually, the seat cushion and the backrest are at right angles when working, and at an obtuse angle when resting, so as to provide support for the user's back, buttocks and thighs at the same time, and to relax the muscles of the whole body.
[0004] However, the seat cushions of most seats in the prior art are fixed and cannot be adjusted. After the backrest is rotated toward the side away from the seat cushion, the angle between the backrest and the seat cushion increases. When the user's back leans back, the angle between the buttocks and the back increases, causing the lower limbs of the human body to slide toward the side away from the backrest as a whole, affecting comfort. Of course, there are also some seats that rotate the seat cushion to connect it to the chair frame, and control the angle of the seat cushion through a drive device to prevent the user's lower limbs from sliding and causing the buttocks to move toward the side away from the backrest when the angle between the backrest and the seat cushion increases. However, the existing seat cushion adjustment structure generally adopts an electric drive, hydraulic drive or pneumatic drive solution, which is not only complex in structure and increases the overall weight of the seat, but also increases production costs. Utility Model Content
[0005] The purpose of the utility model is to provide a seat adjustment structure and an adjustable seat, aiming to solve the problem in the prior art that the seat cushion structure is high in cost and heavy, which is not conducive to seat movement.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0007] In a first aspect, a seat adjustment structure is provided, comprising:
[0008] A support frame connected to the chair frame and located below the seat cushion, the support frame having a support portion;
[0009] a limiting member, provided at the bottom of the seat cushion and corresponding to the supporting portion in the vertical direction; and
[0010] An adjusting member is movably connected to the chair frame, and the adjusting member has a supporting state in which the adjusting member is inserted between the limiting member and the supporting portion, and an adjusting state in which the adjusting member is moved out of the supporting portion. When the adjusting member is switched to the adjusting state, the limiting member abuts against the supporting portion.
[0011] In combination with the first aspect, in a possible implementation, the seat adjustment structure further includes a limit frame arranged outside the support frame, and the limit frame is connected to the seat cushion to limit the upward flipping angle of the seat cushion.
[0012] In conjunction with the first aspect, in a possible implementation, the support frame includes:
[0013] a frame located below the seat cushion and connected to the chair frame; and
[0014] The support block is arranged above the frame, and the support block forms the support portion.
[0015] In combination with the first aspect, in a possible implementation, the free end of the limiting member and / or the supporting portion has a guiding slope, and the guiding slope causes the height of the limiting member and / or the supporting portion in the vertical direction to gradually increase from front to back.
[0016] The beneficial effect of the seat adjustment structure provided by the present invention is that, compared with the prior art, the seat adjustment structure of the present invention is installed on a seat whose seat cushion is rotatably connected to the chair frame. During normal operation, the adjustment member maintains a support state and is located between the limit member and the support portion. At this time, the support surface of the seat cushion remains horizontal. When a rest is needed, the adjustment member is switched to the adjustment state, the support portion loses the support of the adjustment member, and the seat cushion rotates downward under the action of gravity until the limit member abuts against the support portion. At this time, the rear portion of the seat cushion tilts downward, avoiding the problem of the user's lower limbs sliding forward due to the backward rotation of the chair back, thereby improving the user's comfort. The solution in the present invention is simple in structure and easy to operate. It does not cause the problem of the overall weight of the seat being too large and difficult to move, and does not require the use of a driver, saving production costs.
[0017] In a second aspect, an embodiment of the present invention further provides an adjustable seat, comprising the seat adjustment structure described above, and further comprising a chair frame, a chair back and a seat cushion, wherein the chair back and the seat cushion are both rotatably connected to the chair frame.
[0018] In combination with the second aspect, in a possible implementation, the adjustable seat further includes a leg rest connected to the adjusting member.
[0019] In conjunction with the second aspect, in one possible implementation, the chair frame includes:
[0020] a fixed bracket, the chair back and the seat cushion are rotatably connected to the fixed bracket respectively; and
[0021] The guide bracket is connected to the fixed bracket and is located below the seat cushion. The adjusting member is slidably connected to the guide bracket along the front-rear direction.
[0022] In combination with the second aspect, in a possible implementation, the guide bracket is provided with a guide channel along the front-to-back direction, and the adjusting member is slidably inserted into the guide channel.
[0023] In combination with the second aspect, in a possible implementation, the rear end of the adjusting member is provided with a limiting plate, and the front end is connected to the leg rest. When the adjusting member is in the supporting state, the leg rest abuts against the front end of the guide bracket; when the adjusting member is in the adjusting state, the limiting plate abuts against the rear end of the guide bracket.
[0024] In combination with the second aspect, in a possible implementation, the leg rest includes a connecting rod rotatably connected to the adjusting member and a lifting plate connected to the connecting rod, the axis of the connecting rod is perpendicular to the front and rear directions, and when the adjusting member is in a supporting state, the connecting rod abuts against the front end of the guide bracket.
[0025] The beneficial effect of the adjustable seat provided by the present invention is that compared with the prior art, the seat adjustment seat of the present invention adopts the above-mentioned seat adjustment structure. During normal operation, the adjustment member maintains a support state and is located between the limit member and the support portion. At this time, the support surface of the seat cushion remains horizontal. When a rest is needed, the adjustment member is switched to the adjustment state, the support portion loses the support of the adjustment member, and the seat cushion rotates downward under the action of gravity until the limit member abuts against the support portion. At this time, the rear part of the seat cushion tilts downward, avoiding the problem of the user's lower limbs sliding forward due to the backward rotation of the chair back, thereby improving the user's comfort. The solution in the present invention is simple in structure and easy to operate. It will not cause the problem of the overall weight of the seat being too large and difficult to move, and no drive is required, saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0027] Figure 1 A schematic diagram of the structure of an adjustable seat provided in an embodiment of the present utility model;
[0028] Figure 2 A cross-sectional view of an adjustable seat provided in an embodiment of the present utility model;
[0029] Figure 3 for Figure 1 A partial enlarged view of part A in the middle;
[0030] Figure 4 for Figure 2 A partial enlarged view of part B in the middle;
[0031] Figure 5 This is a structural diagram of the adjusting member used in the embodiment of the present utility model when it is in the adjusting state.
[0032] In the figure: 1. Support frame; 101. Frame body; 102. Support block; 2. Adjustment member; 3. Limiting member; 301. Guide slope; 4. Limiting frame; 5. Chair frame; 501. Fixed bracket; 502. Guide bracket; 6. Seat cushion; 7. Chair back; 8. Leg support; 801. Connecting rod; 802. Lifting plate; 9. Limiting piece. DETAILED DESCRIPTION
[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0034] In the claims, specification, and drawings of the present invention, unless otherwise expressly defined, terms such as "first," "second," or "third" are used to distinguish between different objects, rather than to describe a specific order. Unless otherwise specified, other directional words such as "vertical," "clockwise," and "counterclockwise" are used to indicate directions or positional relationships based on the directions and positional relationships shown in the drawings, and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or component referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific scope of protection of the present invention. In the claims, specification, and drawings of the present invention, unless otherwise expressly defined, terms such as "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method without a displacement relationship or relative rotation relationship between the two, that is, including non-detachable fixed connection, detachable fixed connection, integral connection, and fixed connection through other devices or components. In the claims, specification, and drawings of the present invention, terms such as "including," "having," and their variations are intended to mean "including but not limited to."
[0035] It should be noted that "front" refers to the direction in which the seat cushion faces away from the chair back, and the opposite is "back".
[0036] Please also refer to Figures 1 to 5The seat adjustment structure and adjustable seat provided by the present invention are now described. The seat adjustment structure includes a support frame 1, a limiter 3, and an adjustment member 2. The support frame 1 is connected to the chair frame 5 and is located below the seat cushion 6. The support frame 1 has a support portion. The limiter 3 is located at the bottom of the seat cushion 6 and corresponds to the support portion in the vertical direction. The adjustment member 2 is movably connected to the chair frame 5. The adjustment member 2 has a support state in which it is inserted between the limiter 3 and the support portion, and an adjustment state in which it is removed from the support portion. When the adjustment member 2 switches to the adjustment state, the limiter 3 abuts the support portion.
[0037] The seat adjustment structure provided by the present invention is compared with the prior art. The seat adjustment seat of the present invention adopts the above-mentioned seat adjustment structure. During normal operation, the adjustment member 2 maintains a supporting state and is located between the limit member 3 and the support portion. At this time, the support surface of the seat cushion 6 remains horizontal. When a rest is needed, the adjustment member 2 is switched to the adjustment state. The support portion loses the support of the adjustment member 2. Under the action of gravity, the seat cushion 6 rotates downward until the limit member 3 abuts against the support portion. At this time, the rear part of the seat cushion 6 tilts downward, avoiding the problem of the user's lower limbs sliding forward due to the backward rotation of the chair back 7, thereby improving the user's comfort. The solution in the present invention is simple in structure and easy to operate. It will not cause the problem of the overall weight of the seat being too large and difficult to move. In addition, there is no need to use a drive, saving production costs.
[0038] Optionally, the adjusting member 2 is rotatably or slidably connected to the chair frame 5 .
[0039] As a specific embodiment of the adjusting member 2, the adjusting member 2 includes a driving portion and an adjusting portion arranged at an angle, the driving portion is rotatably connected to the chair frame 5, and rotating the driving portion switches the adjusting portion between the supporting state and the adjusting state.
[0040] In some embodiments, see Figures 1 to 5 The seat adjustment structure also includes a limit frame 4 arranged outside the support frame 1, and the limit frame 4 is connected to the seat cushion 6 for limiting the upward flip angle of the seat cushion 6.
[0041] Because the seat cushion 6 is pivotally connected to the chair frame 5, if the user's legs press down on the seat cushion 6, it is easy to cause the seat cushion 6 to flip upward, causing the user's lower limbs to slide downward. In this embodiment, the limit frame 4 is arranged around the support frame 1 and connected to the seat cushion 6. When the seat cushion 6 flips upward, the limit frame 4 abuts the bottom of the support frame 1, thereby preventing the seat cushion 6 from flipping upward and causing the user's lower limbs to slide downward.
[0042] In some embodiments, see Figure 3 The support frame 1 includes a frame body 101 and a support block 102. The frame body 101 is located below the seat cushion 6 and is connected to the chair frame 5. The support block 102 is provided above the frame body 101, and the support block 102 forms a supporting portion.
[0043] In this embodiment, a support block 102 is provided on the frame 101 to increase the strength of the frame 101 at that location, thereby avoiding the problem of force concentration at that location being prone to deformation or breakage due to the contact of the limiter 3 with the support portion.
[0044] Optionally, the support block 102 and the frame body 101 are an integral component, or they can be separate components, connected by welding, screwing, clamping or bonding.
[0045] In some embodiments, see Figure 3 The free end of the limiting member 3 and / or the supporting portion has a guiding slope 301, and the guiding slope 301 makes the height of the limiting member 3 and / or the supporting portion gradually increase from front to back in the vertical direction.
[0046] When the stopper 3 abuts the support portion, a gap is formed on the side (front end) facing away from the seat back 7, which facilitates the insertion of the adjustment member 2 between the support portion and the stopper 3. The solution of this embodiment can be operated with one hand, and the adjustment state can be switched to the support state without flipping the seat cushion 6, which is more convenient.
[0047] Based on the same inventive concept, the present invention also provides an adjustable seat. Figures 1 to 2 The adjustable seat includes the above-mentioned seat adjustment structure, and also includes a chair frame 5, a chair back 7 and a seat cushion 6, and the chair back 7 and the seat cushion 6 are both rotatably connected to the chair frame 5.
[0048] The adjustable seat provided by the present invention adopts the above-mentioned seat adjustment structure. During normal operation, the adjustment member 2 maintains a supporting state and is located between the limit member 3 and the support portion. At this time, the support surface of the seat cushion 6 remains horizontal. When a rest is needed, the adjustment member 2 is switched to the adjustment state. The support portion loses the support of the adjustment member 2. Under the action of gravity, the seat cushion 6 rotates downward until the limit member 3 abuts the support portion. At this time, the rear portion of the seat cushion 6 tilts downward, avoiding the problem of the user's lower limbs sliding forward due to the backward rotation of the chair back 7, thereby improving the user's comfort. The solution in the present invention has a simple structure and is easy to operate. It does not cause the problem of the overall weight of the seat being too large and difficult to move. In addition, there is no need to use a driver, saving production costs.
[0049] In some embodiments, see Figure 2 The adjustable seat also includes a leg rest 8 connected to the adjusting member 2, and the adjusting member 2 is connected to the chair frame 5 by sliding along the front and rear directions. When the adjusting member 2 is in the supporting state, the leg rest 8 is stored under the seat cushion 6. When the adjusting member 2 is in the adjusting state, the leg rest 8 moves forward of the seat cushion 6.
[0050] Since the user must need to rest when the adjusting member 2 is in the adjusting state, the leg rest 8 is connected to the adjusting member 2 so that the leg rest 8 can switch states as the adjusting member 2 slides. There is no need to adjust the position of the leg rest 8 separately, which improves the convenience of use.
[0051] In some embodiments, see Figures 1 to 2 The chair frame 5 includes a fixed bracket 501 and a guide bracket 502, and the chair back 7 and the seat cushion 6 are respectively rotatably connected to the fixed bracket 501; the guide bracket 502 is connected to the fixed bracket 501 and is located below the seat cushion 6, and the adjustment member 2 is connected to the guide bracket 502 in a sliding manner along the front and rear directions.
[0052] The guide bracket 502 and the fixed bracket 501 are provided separately for ease of processing. Moreover, since the adjusting member 2 is connected to the guide bracket 502, as the number of times the adjusting member 2 moves increases, the wear between the guide bracket 502 and the adjusting member 2 increases, which can easily damage the guide bracket 502. In this embodiment, the guide bracket 502 can be replaced separately, reducing maintenance costs.
[0053] Optionally, the guide bracket 502 is provided with a slide rail or a slide groove, and the adjustment member 2 is slidably connected to the guide bracket 502 .
[0054] Optionally, the adjusting member 2 is rotatably connected to the guide bracket 502 .
[0055] In some embodiments, see Figures 1 to 2 The guide bracket 502 is provided with a guide channel along the front-back direction, and the adjusting member 2 is slidably inserted into the guide channel.
[0056] The adjusting member 2 is slidably inserted into the guide channel, increasing the contact area with the guide bracket 502 and improving the stability of the connection. In addition, the guide bracket 502 can also provide support for the adjusting member 2, preventing the adjusting member 2 from separating from the guide bracket 502 due to excessive tension during the sliding process.
[0057] In some embodiments, see Figure 3 The rear end of the adjusting member 2 is provided with a limiting plate 9, and the front end is connected to a leg rest 8. When the adjusting member 2 is in the supporting state, the leg rest 8 abuts against the front end of the guide bracket 502; when the adjusting member 2 is in the adjusting state, the limiting plate 9 abuts against the rear end of the guide bracket 502.
[0058] The solution of this embodiment can limit the travel of the adjusting member 2, preventing the adjusting member 2 from moving arbitrarily and causing the seat cushion 6 to become unstable, which could cause the user to drop the seat cushion 6. It also prevents the adjusting member 2 from separating from the chair frame 5. Because the leg rest 8 is provided at the front end, the leg rest 8 limits the position of the adjusting member 2, eliminating the need for a separate limiting component and simplifying the connection structure.
[0059] In some embodiments, see Figure 2 The leg support 8 includes a connecting rod 801 rotatably connected to the adjusting member 2 and a lifting plate 802 connected to the connecting rod 801. The axis of the connecting rod 801 is perpendicular to the front and rear directions. When the adjusting member 2 is in the supporting state, the connecting rod 801 abuts against the front end of the guide bracket 502.
[0060] The solution in this embodiment can realize the flipping of the lifting plate 802. When the adjusting member 2 is in the supporting state, the lifting plate 802 flips downward. When the adjusting member 2 is in the adjusting state, the lifting plate 802 flips upward, which can support the user's legs.
[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. Seat adjustment structure, characterized in that: include: A support frame connected to the chair frame and located below the seat cushion, the support frame having a support portion; A limiting member is provided at the bottom of the seat cushion and corresponds to the supporting portion in the vertical direction; as well as An adjusting member is movably connected to the chair frame, and the adjusting member has a supporting state in which the adjusting member is inserted between the limiting member and the supporting portion, and an adjusting state in which the adjusting member is moved out of the supporting portion. When the adjusting member is switched to the adjusting state, the limiting member abuts against the supporting portion.
2. The seat adjustment structure according to claim 1, wherein: The seat adjustment structure further comprises a limiting frame arranged around the support frame, wherein the limiting frame is connected to the seat cushion and is used for limiting the upward flipping angle of the seat cushion.
3. The seat adjustment structure according to claim 1, wherein: The support frame comprises: a frame located below the seat cushion and connected to the chair frame; and The support block is arranged above the frame, and the support block forms the support portion.
4. The seat adjustment structure according to claim 1, wherein: The free ends of the position-limiting member and / or the support portion have guiding slopes, and the guiding slopes enable the heights of the position-limiting member and / or the support portion to gradually increase from front to back in the vertical direction.
5. Adjustable seat, characterized in that, The seat adjustment structure according to any one of claims 1 to 4 further comprises a chair frame, a chair back and a seat cushion, wherein the chair back and the seat cushion are both rotatably connected to the chair frame.
6. The adjustable seat according to claim 5, characterized in that: The adjustable seat further comprises a leg rest connected to the adjusting member.
7. The adjustable seat according to claim 6, characterized in that: The chair frame comprises: a fixed bracket, the chair back and the seat cushion are rotatably connected to the fixed bracket respectively; and The guide bracket is connected to the fixed bracket and is located below the seat cushion. The adjusting member is slidably connected to the guide bracket along the front-rear direction.
8. The adjustable seat according to claim 7, characterized in that: The guide bracket is provided with a guide channel along the front-rear direction, and the adjusting member is slidably inserted in the guide channel.
9. The adjustable seat according to claim 7, characterized in that: The rear end of the adjusting member is provided with a limiting plate, and the front end is connected to the leg rest. When the adjusting member is in the supporting state, the leg rest abuts against the front end of the guide bracket; when the adjusting member is in the adjusting state, the limiting plate abuts against the rear end of the guide bracket.
10. The adjustable seat according to claim 6, characterized in that: The leg support includes a connecting rod rotatably connected to the adjusting member and a lifting plate connected to the connecting rod. The axis of the connecting rod is perpendicular to the front and rear directions. When the adjusting member is in a supporting state, the connecting rod abuts against the front end of the guide bracket.