Seat cushion assembly and seat

Abstract

The utility model discloses a seat cushion assembly and seat, seat cushion assembly of seat includes seat cushion, support block, gas pressure pole, seat cushion includes upper surface, and support block is pivoted in the front end of seat cushion, and gas pressure pole is connected between seat cushion and support block, support block includes first support surface, second support surface, and the width of second support surface is greater than the width of first support surface, be provided with control button on gas pressure pole, and this control button is in the state of being pressed when makes gas pressure pole in the state of being telescopic, and this control button is in the state of not being pressed when makes gas pressure pole in the state of rigid support between seat cushion and support block. In the utility model, the user can adjust support block according to own height to make the seat depth of seat cushion assembly adapt to own height, and the comfort of seat cushion assembly is improved by using gas pressure pole to provide support for support block.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, specifically to a seat cushion assembly and a seat. Background Technology

[0002] The fixed seat cushion length of existing chairs results in a constant distance between the front end of the cushion and the seat back. When taller users use these chairs, their backs are restricted by the seat back, and the relatively short seat cushion cannot provide adequate leg support, often leaving the thighs near the knees unsupported. Similarly, for shorter users, the relatively short seat cushion makes it difficult to find a comfortable position against the seat back. Utility Model Content

[0003] The purpose of this invention is to provide a seat cushion assembly and a seat that can adjust the seat depth to accommodate users of different heights.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The seat cushion assembly includes the seat cushion, support block, and gas spring;

[0006] The seat cushion includes an upper surface, a support block is pivotally connected to the front end of the seat cushion, and a gas spring is connected between the seat cushion and the support block. The extension and retraction of the gas spring causes the support block to swing back and forth relative to the seat cushion between a first position and a second position.

[0007] The support block includes a first support surface and a second support surface, the width of the second support surface being greater than the width of the first support surface; when the gas spring drives the support block to swing to the first position, the first support surface connects to the front side of the upper surface of the seat cushion and together with the upper surface forms a support surface that provides support for the user; when the gas spring drives the support block to swing to the second position, the second support surface connects to the front side of the upper surface of the seat cushion and together with the upper surface forms a support surface that provides support for the user.

[0008] The gas spring is equipped with a control button. When the control button is pressed, the gas spring is in a retractable state. When the control button is not pressed, the gas spring is in a rigid support state between the seat and the support block.

[0009] Preferably, the seat cushion includes a flexible support pad and a bracket connected below the flexible support pad, with the upper surface located on the flexible support pad; the support block includes a flexible sleeve and a support frame located inside the flexible sleeve, with the first support surface and the second support surface located on the outer surface of the flexible sleeve; the front end of the bracket is provided with a forward-extending mounting bracket, and the support frame is pivotally connected to the mounting bracket; the two ends of the gas spring are respectively connected to the bracket and the support frame.

[0010] Preferably, the pneumatic rod includes a cylinder body, a piston rod, and a mounting seat connected to the end of the piston rod. The cylinder body is hinged to the support frame, the mounting seat is hinged to the bracket, the control button is located at the end of the piston rod, and the mounting seat is provided with a lever for pressing the control button.

[0011] Preferably, the lever is rotatably connected to the mounting base, and a switching mechanism is mounted on the bracket or flexible support pad. The switching mechanism is used to drive the lever to swing relative to the mounting base between the position where the control button is pressed and the position where the control button is disengaged.

[0012] Preferably, the support frame is provided with a mounting groove that is recessed forward from its rear side, and at least a portion of the front end of the mounting bracket extends into the mounting groove, with the portion of the mounting bracket extending into the mounting groove pivotally connected to the support frame.

[0013] Preferably, the mounting groove of the support frame has two mounting walls that extend from the top wall of the mounting groove to the bottom wall of the mounting groove. The two mounting walls are staggered laterally. The mounting frame includes two connecting arms. The front ends of the connecting arms extend into the mounting groove and correspond to the two mounting walls respectively. The corresponding connecting arms and mounting walls are pivotally connected together by a pivot shaft that passes through them. The two pivot shafts are coaxial.

[0014] Preferably, two connecting plates extending rearward from the front wall of the mounting groove are fixed in the mounting groove of the support frame. The two connecting plates are arranged opposite each other, and a pivot is connected between the rear ends of the two connecting plates. The front end of the cylinder of the pneumatic rod is hinged to the pivot.

[0015] Preferably, the lower surface of the flexible support pad is provided with a storage groove for accommodating the pneumatic rod, and the support frame and the first support surface located on the outer surface of the flexible sleeve are provided with a clearance groove for avoiding the pneumatic rod cylinder.

[0016] Preferably, the first support surface is located at the top of the support block, the second support surface extends downward from the front side of the first support surface, the front end of the seat cushion is provided with a recessed part that is recessed to the rear, the support block is placed in the recessed part, and the rear end face of the recessed part forms a recessed arc-shaped part that is recessed to the rear. When the support block is in the second position, the first support surface of the support block is received in the arc-shaped recessed part.

[0017] Seat, including the aforementioned seat cushion assembly.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] In this invention, a support block is pivotally connected to the front end of the seat cushion. When the support block rotates to different positions, the first support surface and the second support surface respectively form support surfaces with the upper surface of the seat cushion to provide support for the user. Since the widths of the first support surface and the second support surface are different, the support surfaces providing support for the user have different dimensions when the support block rotates to two different states. The user can adjust the support block according to their height to make the seat depth of the seat cushion assembly adapt to their height. In addition, the use of a gas spring to support the support block enables the support block to provide stable support for the user, improving the comfort of the seat cushion assembly. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the present invention and illustrates one usage state of the present invention;

[0022] Figure 3 This is a schematic diagram illustrating another usage state of the present invention;

[0023] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0024] Figure 5 for Figure 1 Schematic diagram of the structure of the medium-flexible support pad;

[0025] Figure 6 for Figure 1 A schematic diagram of the structure of the central support block.

[0026] The components are as follows: 100, seat cushion; 10, flexible support pad; 101, upper surface; 102, lower surface; 11, recess; 111, arc-shaped recess; 12, storage groove; 20, bracket; 300, support block; 30, flexible sleeve; 301, first support surface; 302, second support surface; 31, clearance groove; 40, support frame; 41, clearance groove; 42, mounting groove; 43, mounting wall; 44, pivot; 45, connecting plate; 50, gas spring; 51, cylinder; 52, piston rod; 53, control button; 54, mounting base; 55, lever; 60, mounting bracket; 61, connecting arm. Detailed Implementation

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] like Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, this utility model provides a seat cushion assembly, which includes a seat cushion 100, a support block 300, and a gas spring 50. The seat cushion 100 includes an upper surface 101. The support block 300 is pivotally connected to the front end of the seat cushion 100. The gas spring 50 is connected between the seat cushion 100 and the support block 300. The extension and retraction of the gas spring 50 causes the support block 300 to swing back and forth relative to the seat cushion 100, so that the support block 300 can swing between a first position and a second position relative to the seat cushion 100. The support block 300 includes a first support surface 301 and a second support surface 302. Both the first support surface 301 and the second support surface 302 are located on the outer surface of the support block 300. The cross-section of the support block 300 forms a structure that is wide in the vertical direction and narrow in the front-back direction. The first support surface 301 is located at the top of the support block 300, and the second support surface 302 is located at the front side of the support block 300 and extends downward from the front side of the first support surface 301. The width D1 of the first support surface 301 is smaller than the width D2 of the second support surface 302.

[0031] When the gas spring 50 causes the support block 300 to swing to the first position, the first support surface 301 is located on top of the support block 300 and is connected to the front side of the upper surface 101 of the seat cushion 100. Together with the upper surface 101, the first support surface 301 forms a support surface for providing support to the user. When the gas spring 50 causes the support block 300 to swing to the second position, the second support surface 302 is located on top of the support block 300 and is connected to the front side of the upper surface 101 of the seat cushion 100. Together with the upper surface 101, the second support surface 302 forms a support surface for providing support to the user.

[0032] Since the second support surface 302 has a larger width, the overall size of the support surface formed by the second support surface 302 and the upper surface 101 in the front-back direction is larger than the overall size of the support surface formed by the first support surface 301 and the upper surface 101.

[0033] A control button 53 is provided on the gas spring 50. When the control button 53 is pressed, the gas spring 50 is in a retractable state. The retraction of the gas spring 50 causes the support block 300 to rotate relative to the seat cushion 100, allowing the support block 300 to swing in the first and second positions mentioned above, changing the size of the support surface of the seat cushion assembly that supports the user. When the control button 53 is not pressed, the gas spring 50 does not retract, and it can provide rigid support, thereby providing rigid support between the support block 300 and the seat cushion 100, ensuring that the support block 300 and the seat cushion 100 are in a relatively fixed state. When the support block 300 is subjected to downward pressure from the user, it can provide stable support for the user's thigh near the knee.

[0034] In this invention, the support block 300 is pivotally connected to the front end of the seat cushion 100. When the support block 300 rotates to different positions, the first support surface 301 and the second support surface 302 respectively form support surfaces for providing support to the user with the upper surface 101 of the seat cushion 100. Since the widths of the first support surface 301 and the second support surface 302 are different, the support surfaces for providing support to the user have different dimensions when the support block 300 rotates to two different states. The user can adjust the support block 300 according to their height so that the seat depth of the seat cushion assembly is adapted to their height. In addition, the gas spring 50 provides support to the support block 300, enabling the support block 300 to provide stable support to the user and improving the comfort of the seat cushion assembly.

[0035] In a preferred embodiment, the seat cushion 100 includes a flexible support pad 10 and a bracket 20 connected below the flexible support pad 10, with the bracket 20 providing support for the flexible support pad 10. An upper surface 101 is located on the flexible support pad 10. The support block 300 includes a flexible sleeve 30 and a support frame 40 located inside the flexible sleeve 30, providing support for the flexible sleeve 30. A first support surface 301 and a second support surface 302 are located on the outer surface of the flexible sleeve 30. The flexible support pad 10 and flexible sleeve 30 covering the seat cushion 100 and the support block 300 are made of flexible materials, which improves the comfort of the seat cushion assembly. The flexible support pad 10 and flexible sleeve 30 can be made of other flexible materials suitable for contact with the user, such as molded cotton. The two ends of the gas spring 50 are connected to the bracket 20 and the support frame 40, respectively.

[0036] The pneumatic lever 50 includes a cylinder 51, a piston rod 52, and a mounting base 54. The front end of the cylinder 51 is hinged to the support frame 40. The mounting base 54 is fixedly connected to the rear end of the piston rod 52 and is also hinged to the bracket 20. The control button 53 is located at the rear end of the piston rod 52. The mounting base 54 is provided with a lever 55 for pressing the control button 53. The lever 55 is rotatably connected to the mounting base 54, allowing the lever 55 to press or release the control button 53 when swinging. A switching mechanism is installed on the bracket 20 or the flexible support pad 10, which drives the lever 55 to swing relative to the mounting base 54 between the position where the control button 53 is pressed and the position where the control button 53 is disengaged.

[0037] like Figure 2 As shown, the rigid support provided by the pneumatic rod 50 between the support block 300 and the seat cushion 100 keeps the support block 300 in the first position. The first support surface 301 and the upper surface 101 form a relatively short support surface. When it is necessary to increase the seat depth of the seat cushion assembly, the switch mechanism is operated to drive the lever 55 to press the control button 53. At this time, the piston rod 52 of the pneumatic rod 50 extends from the cylinder 51 until the support block 300 swings to the desired position. Figure 3 In the second position shown, the operation of the switching mechanism is released, and the gas spring 50 returns to the state of rigidly supporting the support block 300 and the seat cushion 100. When it is necessary to reduce the seat depth of the seat cushion assembly, that is, when the support block 300 needs to be moved from... Figure 3 The status shown has been adjusted to Figure 2 In the indicated state, operate the switch mechanism to drive the lever 55 to press the control button 53, pressing the support block 300 downwards, causing the support block 300 to swing backwards and compress the pneumatic rod 50 until the support block 300 moves to... Figure 2 The state shown.

[0038] The switching mechanism of this utility model can be a pull rope, a toggle switch, or anything else that can drive the lever 55 to swing. In other embodiments, the lever 55 can be mounted on the mounting base 54, allowing the lever 55 to move in a straight line relative to the mounting base 54. Then, the switching mechanism can drive the lever 55 to move in a straight line and press the control button 53 on the pneumatic lever 50.

[0039] In order to ensure that the first support surface 301 and the second support surface 302 on the support block 300 can be well connected to the upper surface 101 and to avoid large gaps at the connection position, the present invention provides a mounting groove 42 that is recessed from the rear side to the front on the support frame 40. At least a part of the front end of the aforementioned mounting bracket 60 extends into the mounting groove 42, and the part of the mounting bracket 60 that extends into the mounting groove 42 is pivotally connected to the support frame 40. Two mounting walls 43 extending from the top wall to the bottom wall of the mounting groove 42 are fixed in the mounting groove 42 of the support frame 40. The two mounting walls 43 are set at a certain distance laterally offset. The mounting bracket 60 includes two connecting arms 61. The front ends of the two connecting arms 61 extend into the mounting groove 42, and the two connecting arms 61 correspond to the two mounting walls 43 respectively. The connecting arms 61 are placed against one side of the corresponding mounting wall 43 and are pivotally connected together by a pivot 44 that passes through them. The two pivot 44 are coaxially arranged. The two laterally offset connecting arms 61 are pivotally connected to the support frame 40, so that the support block 300 can swing back and forth more smoothly relative to the seat cushion 100.

[0040] Two connecting plates 45 extending rearward from the front end wall of the mounting groove 42 are fixed inside the mounting groove 42 of the support frame 40. The two connecting plates 45 are arranged opposite each other, and a pivot is connected between the rear ends of the two connecting plates 45. The front end of the cylinder 51 of the gas spring 50 is limited between the two connecting plates 45 and hinged to the pivot. In this way, the cylinder 51 of the gas spring 50 is pivotally connected to the support frame 40, and the gas spring 50 can pull the support block 300 to swing back and forth relative to the seat cushion 100 when it extends and retracts.

[0041] In this invention, a storage groove 12 is provided on the lower surface 102 of the flexible support pad 10. The storage groove 12 is used to accommodate the gas spring 50. The support frame 40 is provided with a clearance groove 41. The first support surface 301 on the outer surface of the flexible sleeve 30 is provided with a clearance groove 31. After the support frame 40 is installed inside the flexible sleeve 30, the clearance groove 41 and the clearance groove 31 are aligned. During the extension and retraction of the gas spring 50, the cylinder 51 of the gas spring 50 can pass through the clearance groove 31 and the clearance groove 41, avoiding interference between the support block 300 and the gas spring 50. The gas spring 50 is accommodated in the storage groove 12, reducing the space occupied by the gas spring 50 and the flexible support pad 10 in the height direction. This helps to reduce the size of the seat cushion assembly in the height direction and facilitates the installation of the seat cushion assembly on the seat.

[0042] In this invention, the support block 300 has a cross-section that is wider vertically and narrower horizontally. The first support surface 301 and the second support surface 302 are two adjacent walls on the surface of the support block 300. A rearwardly recessed recess 11 is provided at the front end of the cushion 100. The support block 300 is entirely placed in the recess 11 and pivotally connected to the cushion 100. The rear end face of the recess 11 forms a rearwardly recessed arc-shaped recess 111, which accommodates the first support surface 301. When the support block 300 is located in the... Figure 3 In the second position shown, the first support surface 301 swings to a position located within the arc-shaped recess 111 to avoid interference between the support block 300 and the seat cushion 100 when the support block 300 swings back and forth.

[0043] It should be noted that in the above embodiments, the two ends of the gas spring 50 are hinged to the support block 300 and the seat cushion 100 respectively. When the gas spring 50 extends or retracts, it causes the support block 300 to swing back and forth relative to the seat cushion 100. In other embodiments, the gas spring 50 is not limited to being connected to the support block 300 and the seat cushion 100 by means of hinges so that the two can rotate relative to each other. In short, the extension or retraction of the gas spring 50 can cause the support block 300 to swing back and forth relative to the seat cushion 100.

[0044] The seat of this utility model includes the above-mentioned seat cushion assembly. The other structures of the seat are the same as those in the prior art and will not be described in detail here.

[0045] Finally, it should be noted that the above embodiments are only optional embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A seat cushion assembly, characterized in that, Includes seat cushion, support block, and gas spring; The seat cushion includes an upper surface, a support block is pivotally connected to the front end of the seat cushion, and a gas spring is connected between the seat cushion and the support block. The extension and retraction of the gas spring causes the support block to swing back and forth relative to the seat cushion between a first position and a second position. The support block includes a first support surface and a second support surface, the width of the second support surface being greater than the width of the first support surface; when the gas spring drives the support block to swing to the first position, the first support surface connects to the front side of the upper surface of the seat cushion and together with the upper surface forms a support surface that provides support for the user; When the gas spring drives the support block to swing to the second position, the second support surface connects to the front side of the upper surface of the seat cushion and together with the upper surface forms a support surface that provides support for the user. The gas spring is equipped with a control button. When the control button is pressed, the gas spring is in a retractable state. When the control button is not pressed, the gas spring is in a rigid support state between the seat and the support block.

2. The seat cushion assembly of the chair as claimed in claim 1, characterized in that, The seat cushion includes a flexible support pad and a bracket connected below the flexible support pad, with its upper surface located on the flexible support pad; the support block includes a flexible sleeve and a support frame located inside the flexible sleeve, with a first support surface and a second support surface located on the outer surface of the flexible sleeve; the front end of the bracket is provided with a forward-extending mounting bracket, and the support frame is pivotally connected to the mounting bracket; the two ends of the gas spring are respectively connected to the bracket and the support frame.

3. The seat cushion assembly of the chair as described in claim 2, characterized in that, The pneumatic rod includes a cylinder, a piston rod, and a mounting base connected to the end of the piston rod. The cylinder is hinged to a support frame, the mounting base is hinged to a bracket, and a control button is located at the end of the piston rod. A lever for pressing the control button is provided on the mounting base.

4. The seat cushion assembly of the chair as described in claim 3, characterized in that, The lever is rotatably connected to the mounting base, and a switching mechanism is mounted on the bracket or flexible support pad. The switching mechanism is used to drive the lever to swing relative to the mounting base between the position where the control button is pressed and the position where the control button is disengaged.

5. The seat cushion assembly of the chair as described in claim 3, characterized in that, The support frame is provided with a mounting groove that is recessed from its rear side forward. At least a portion of the front end of the mounting bracket extends into the mounting groove, and the portion of the mounting bracket extending into the mounting groove is pivotally connected to the support frame.

6. The seat cushion assembly of the chair as described in claim 5, characterized in that, The mounting slot of the support frame has two mounting walls that extend from the top wall of the mounting slot to the bottom wall of the mounting slot. The two mounting walls are set laterally offset. The mounting frame includes two connecting arms. The front end of the connecting arm extends into the mounting slot and corresponds to the two mounting walls respectively. The corresponding connecting arms and mounting walls are pivotally connected together by a pivot shaft that passes through them. The two pivot shafts are set coaxially.

7. The seat cushion assembly of the chair as described in claim 5, characterized in that, Two connecting plates extending rearward from the front wall of the mounting groove are fixed in the mounting groove of the support frame. The two connecting plates are arranged opposite each other, and a pivot is connected between the rear ends of the two connecting plates. The front end of the cylinder of the pneumatic rod is hinged to the pivot.

8. The seat cushion assembly of the chair as claimed in claim 3, characterized in that, The lower surface of the flexible support pad is provided with a storage groove for accommodating the pneumatic rod, and the support frame and the first support surface located on the outer surface of the flexible sleeve are provided with a clearance groove for avoiding the pneumatic rod cylinder.

9. The seat cushion assembly of the chair as claimed in claim 1, characterized in that, The first support surface is located at the top of the support block, and the second support surface extends downward from the front side of the first support surface. The front end of the cushion is provided with a recessed part that is recessed to the rear. The support block is placed in the recessed part, and the rear end face of the recessed part forms a recessed arc-shaped part that is recessed to the rear. When the support block is in the second position, the first support surface of the support block is received in the arc-shaped recessed part.

10. A seat, characterized in that, Includes the cushion assembly as described in any one of claims 1-9.

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