Chair seat with quick release of the cushion

Abstract

The application discloses a chair seat with a quick-mounting and quick-dismounting cushion, which comprises a top cushion and a bottom base, and the cushion and the base are detachably connected through a quick-mounting assembly; the quick-mounting assembly comprises a plurality of sets of hook-and-slot clamping assemblies, the hooks are arranged on one of the cushion and the base, the slots are arranged on the other one of the cushion and the base, the hooks are clamped into the slots, and the cushion and the base are kept relatively fixed in the vertical direction and the left-right direction; the quick-mounting assembly further comprises a locking pin and a limiting piece; the locking pin is movably connected to the base in the left-right direction, and an abutting portion is formed on the base and located on the front side of the locking pin; and the limiting piece is arranged on the bottom of the cushion. The chair seat with the quick-mounting and quick-dismounting cushion has the advantages that the cushion can be dismounted from the base for cleaning or replacement, the base can be used with different styles of cushions, and the utility value is high; the quick-mounting assembly has a simple structure, and the mounting and dismounting operation between the cushion and the base is very simple.

Description

Technical Field

[0001] This utility model relates to the field of chair seat technology, specifically to a chair seat with a quick-release and removable cushion. Background Technology

[0002] The chair seat is a crucial component of a chair, supporting the human buttocks. It typically consists of an upper seat cushion and a lower base. The base connects to the backrest and mounts the tray. The seat cushion comprises a hard plastic base and a soft padding on top, providing a comfortable seating experience. Currently, most chair seats on the market have the seat cushion and base fixed together. Once manufactured, the seat cushion and base are assembled, packaged, and shipped together; meaning the chair seat cannot be disassembled after assembly.

[0003] However, different consumers have different preferences. Some prefer foam cushions, some prefer leather cushions, and others prefer mesh cushions. Even for cushions of the same material, different consumers may have different color preferences. Furthermore, existing chair seats cannot have their cushions removed and replaced; the styles are fixed, and manufacturers need to produce separate chair seats for different cushion styles, which is costly. On the other hand, when the cushions get dirty or damaged, the entire chair seat needs to be replaced, which is extremely inconvenient.

[0004] Therefore, how to provide a chair seat with a cushion that can be easily installed and removed has become the main problem that needs to be solved. Summary of the Invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a chair seat with a quick-release cushion. The cushion can be removed from the base for cleaning or replacement, and the base can be replaced with different styles of cushions, which is highly practical. The quick-release component restricts the cushion and the base in the vertical and lateral directions through interlocking hooks and slots, and restricts the cushion and the base in the front-back direction through abutment and movable locking pins. The quick-release component has a simple structure and makes the installation and removal of the cushion and the base very convenient.

[0006] The effect of this utility model is achieved as follows: This application provides a chair seat with a quick-release cushion, including a top cushion and a bottom base. The cushion and the base are detachably connected by a quick-release assembly. The quick-release assembly includes several sets of interlocking hooks and slots. The hooks are located in one of the cushion and the base, and the slots are located in the other. When the hooks are engaged with the slots, the cushion and the base remain relatively fixed in the vertical and lateral directions. The quick-release assembly also includes a locking pin and a limiting member. The locking pin is movably connected to the base, and the base has an abutment portion located in front of the locking pin. The limiting member is located at the bottom of the cushion. The quick-release seat has a switchable locked and unlocked state. In the unlocked state, the locking pin moves to avoid the limiting member, which can slide back and forth relative to the locking pin and the abutment part. The seat can slide backward until the hook disengages from the slot, thus separating the seat and the base. In the locked state, the seat slides forward to align with the base, the hook engages with the slot, the front side of the limiting member abuts against the abutment part, and the locking pin moves to abut against the rear side of the limiting member. The limiting member is clamped between the locking pin and the abutment part, and the seat and the base are assembled and fixed.

[0007] Furthermore, the limiting component includes a limiting part at the bottom, with the front end face of the limiting part inclined. When switching from the unlocked state to the locked state, the seat cushion slides forward relative to the base, and the limiting part pushes the locking pin forward. Along the front end face of the limiting part, the locking pin is squeezed and slides away from the limiting component. This eliminates the need for manual adjustment of the locking pin to avoid the limiting component, improving the ease of chair assembly.

[0008] Furthermore, the rear end of the locking pin is angled. When switching from the unlocked to the locked state, the seat cushion slides forward relative to the base, and the limiting member pushes the locking pin forward. Along the inclined surface of the locking pin end, the locking pin is squeezed and slides away from the limiting member. This eliminates the need for manual adjustment of the locking pin to avoid the limiting member, improving the ease of chair assembly.

[0009] Furthermore, the base is equipped with an elastic element. The elastic force of the element acts on the locking pin, causing the locking pin to tend to move towards the limiting element. Users do not need to manually adjust the locking pin to switch the seat to the locked state, thereby further improving the ease of seat assembly.

[0010] Furthermore, the base is equipped with two sets of locking pins on the left and right, and the bottom of the seat cushion is equipped with two sets of limiting members accordingly. An elastic member is placed between the two sets of locking pins, so that the locking pins on each side tend to move towards the limiting member. This not only makes the connection between the seat cushion and the base stronger in the locked state, but also simplifies the connection structure because the two sets of locking pins are connected by the same elastic member.

[0011] Furthermore, the base has a recessed receiving groove extending in the left-right direction, and the side wall of the receiving groove has a hollowed-out movable hole. The locking pin includes a positioning part with a width similar to that of the receiving groove. The positioning part is slidably connected to the base through the receiving groove, and the locking pin passes through the movable hole out of the receiving groove. The connection strength is high, which makes the assembly operation of the chair seat more stable.

[0012] Furthermore, a cover plate is screwed onto the base, and the cover plate is configured to cover the receiving groove. By covering the receiving groove with the cover plate, the locking pin and the base are relatively fixed in the vertical direction, which further improves the connection strength and stability, and the cover plate is easy to install and remove.

[0013] Furthermore, an unlocking component is slidably connected to the base along its front-to-back direction. The unlocking component includes a top pushing part, and the locking pin includes a bottom linkage part. The rear end face of the linkage part and / or the front end face of the pushing part are inclined, so that when the unlocking component slides back and forth, the pushing part presses against the linkage part and forces the linkage part to move horizontally, thereby causing the locking pin to move away from the limiting component. The connection structure is simple, and the disassembly of the chair seat is very convenient.

[0014] Furthermore, the bottom of the seat cushion is equipped with two sets of symmetrical limiting members, and the base has two side abutment portions extending in the front-to-back direction. Each side abutment portion abuts against the limiting member on the side away from the locking pin, so that the base and the seat cushion are relatively fixed in the left-to-right direction. This further improves the connection strength between the seat cushion and the base, and makes the installation of the seat cushion more stable and smooth.

[0015] Furthermore, the quick-release assembly of the seat cushion and base also includes several sliders located at the bottom of the seat cushion and a front support portion horizontally positioned at the top of the base. In the locked state, the front ends of the sliders abut against the front support portion. This further enhances the connection strength between the seat cushion and base in the front-to-back direction, effectively preventing the seat cushion from detaching forward from the base during use.

[0016] Furthermore, the seat cushion and base are equipped with two symmetrical sliders at the bottom. The base has two side support portions extending in the front-to-back direction. The two sliders are located between the side support portions on both sides, and each side support portion abuts against the side wall of the slider, thus fixing the base and seat cushion relatively in the left-to-right direction. This further enhances the connection strength between the seat cushion and the base, and makes the installation of the seat cushion more stable and smooth.

[0017] Furthermore, the base has a vertically perforated through-hole, and the unlocking component includes an operating part at the bottom. The unlocking component is slidably connected to the base through the through-hole, and the operating part protrudes through the through-hole and is exposed at the bottom of the base. This further improves the convenience of disassembling the chair seat.

[0018] Furthermore, the latch includes several first latches disposed on the top of the base, with the hook heads of the first latches facing rearward, and several first slots disposed on the bottom of the seat cushion; in the locked state, the first latches and the first slots engage, thereby fixing the seat cushion and the base relatively in the vertical direction. The structure is simple and the assembly operation is relatively convenient.

[0019] Furthermore, the latch includes several second latches located at the bottom of the seat cushion, with the hook heads facing forward. The latch also includes several second latches located at the top of the base. In the locked state, the second latches and second latches engage, fixing the seat cushion and base relatively in the vertical direction. The structure is simple and assembly is relatively convenient.

[0020] Furthermore, the bottom of the seat cushion has two symmetrical third hooks, with their heads facing towards each other. The top of the base has two symmetrical fourth hooks, with their heads facing away from each other. In the locked state, the opposing third and fourth hooks engage, fixing the seat cushion and base relatively in the left-right direction. The structure is simple and assembly is relatively convenient.

[0021] The chair seat with quick-release cushion provided in this application allows the cushion to be removed from the base for washing or replacement, and the base can be replaced with different styles of cushions, making it highly practical. The cushion and base are restrained vertically and laterally by interlocking hooks and slots, and further restrained in the front-to-back direction by abutment and movable locking pins. When assembling the chair seat, the cushion can be placed at the rear of the base, in the unlocked state. The hooks disengage from the slots, and the locking pins avoid the limiting components. Then, the cushion is pushed forward to align it with the base, locking the seat in the locked state. The hooks engage with the slots, and the locking pins move to press the limiting components against the abutment, securing the cushion and base and completing the assembly. Conversely, disassembly can also be performed. Therefore, the quick-release component has a simple structure and makes the assembly and disassembly of the cushion and base very convenient. Attached Figure Description

[0022] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 A three-dimensional structural diagram of the chair seat provided in an embodiment of this application; Figure 2 A schematic diagram of the bottom structure of the chair seat provided in an embodiment of this application; Figure 3 This is a schematic diagram of the connection structure between the cushion and the base provided in an embodiment of this application; Figure 4 A schematic diagram of the bottom structure of the seat cushion provided in an embodiment of this application; Figure 5 This is a schematic diagram of the connection structure between the locking pin and the base provided in an embodiment of this application; Figure 6 This is a schematic diagram of the connection structure between the locking member and the base provided in an embodiment of this application; Figure 7 A schematic diagram illustrating the state change of the chair seat when the cushion is in a rearward position in the unlocked state, as provided in an embodiment of this application. Figure 8 A schematic diagram illustrating the state change of the chair seat when the cushion is pushed forward in the unlocked state, as provided in an embodiment of this application. Figure 9 This is a schematic diagram illustrating the state changes of the chair seat in a locked state, as provided in an embodiment of this application. Figure 10 This is a schematic diagram illustrating the state change of the chair seat after the unlocking component is activated, as provided in this embodiment of the application.

[0023] The attached figures are labeled as follows: 1-seat cushion, 1a-soft padding layer, 1b-support plate, 110-first slot, 120-second hook, 130-third hook, 2-base, 201-accommodating groove, 202-moving hole, 203-through hole, 210-abutting part, 220-first hook, 230-second slot, 240-fourth hook, 250-side abutting part, 260-front support part, 270-side support part, 3-locking pin, 310-positioning part, 320-linkage part, 4-limiting part, 410-limiting part, 5-elastic part, 6-cover plate, 7-unlocking part, 710-pushing part, 720-operating part, 8-slider. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0025] Please refer to the attached document. Figure 1-10 This application provides a chair seat with a quick-release cushion, including a top cushion 1 and a bottom base 2. The cushion 1 and the base 2 are detachably connected by a quick-release assembly. The quick-release assembly includes several sets of hooks and slots that engage with each other. The hooks are located in one of the cushion 1 and the base 2, and the slots are located in the other. When the hooks are engaged with the slots, the cushion 1 and the base 2 remain relatively fixed in the vertical and horizontal directions. The quick-release assembly also includes a locking pin 3 and a limiting member 4. The locking pin 3 is movably connected to the base 2, and the base 2 has an abutment portion 210 located in front of the locking pin 3. The limiting member 4 is located at the bottom of the cushion 1. The chair seat with quick-release cushion has a switchable locked and unlocked state. In the unlocked state, the locking pin 3 moves to avoid the limiting member 4. The limiting member 4 can slide back and forth relative to the locking pin 3 and the abutment part 210. The cushion 1 can slide backward until the hook disengages from the slot, thereby separating the cushion 1 and the base 2. In the locked state, the cushion 1 slides forward to align with the base 2. The hook engages with the slot. The front side of the limiting member 4 abuts against the abutment part 210, and the locking pin 3 moves to abut against the rear side of the limiting member 4. The limiting member 4 is clamped between the locking pin 3 and the abutment part 210, and the cushion 1 and the base 2 are assembled and fixed.

[0026] In this embodiment, the seat cushion 1 can be detached from the base 2 for washing or replacement. The base 2 can be used with different styles of seat cushions 1, making it highly practical. Furthermore, the seat cushion 1 and base 2 are restrained vertically and horizontally by interlocking hooks and slots, and are further restrained in the front-to-back direction by the abutment part 210 and the movable locking pin 3 clamping or avoiding the limiting member 4. When assembling the chair seat, please refer to the attached diagram. Figure 7 First, place the seat cushion 1 at the rearmost position on top of the base 2. At this time, the chair seat is in the unlocked state, the hook is disengaged from the slot, and the locking pin 3 avoids the limiting piece 4; please refer to the attached document. Figure 8-9 Then, push the seat cushion 1 forward to align it with the base 2. At this point, the chair seat is locked, the hook engages with the slot, and the locking pin 3 moves to press the limiting member 4 against the abutment part 210, fixing the seat cushion 1 and the base 2 and completing the chair seat assembly operation. Conversely, the chair seat can also be disassembled. Therefore, the quick-assembly component structure is relatively simple, and the assembly and disassembly operations between the seat cushion 1 and the base 2 are very convenient.

[0027] Preferably, the seat cushion 1 includes a flexible top cushion layer 1a and a rigid bottom support plate 1b. The support plate 1b is an injection-molded part, and the limiting part 4, hooks, and slots are all integrally formed on the support plate 1b, which not only facilitates processing but also ensures the strength of the seat cushion 1. The cushion layer 1a is made of a flexible material, such as sponge, mesh, or leather, and can be in various shapes and colors. Manufacturers can select the appropriate cushion layer 1a according to customer preferences, fix it to the support plate 1b, and assemble it together with the base 2, making it highly practical. The base 2 is a shell-like structure with a recessed top. The bottom of the base 2 is used to install a tray, thereby connecting the seat back and gas spring. Other adjustment mechanisms can also be set on the base 2 to adjust the seat's fore-aft depth or vertical height.

[0028] Please refer to the attached document. Figure 2 and attached Figure 8 In some embodiments of this application, the limiting member 4 includes a limiting part 410 at the bottom. The front end face of the limiting part 410 is inclined. When switching from the unlocked state to the locked state, the seat cushion 1 slides forward relative to the base 2, and the limiting part 410 pushes the locking pin 3 forward. Along the front end face of the limiting part 410, the locking pin 3 is squeezed to slide in a direction away from the limiting member 4.

[0029] In this embodiment, by tilting the front end face of the limiting part 410, when assembling the chair seat, the locking pin 3 automatically slides along the inclined surface as the limiting part 410 pushes forward, eliminating the need to manually adjust the locking pin 3 to avoid the limiting part 4, thus improving the ease of chair seat assembly. In the locked state, the locking pin 3 abuts against the plane on the rear side of the limiting part 410, so it will not move under the pushing of the limiting part 410, ensuring the stability of the chair seat after assembly.

[0030] Please refer to the attached document. Figure 5 and attached Figure 8 In some embodiments of this application, the rear side of the end of the locking pin 3 is inclined. When switching from the unlocked state to the locked state, the seat 1 slides forward relative to the base 2, and the limiting member 4 pushes the locking pin 3 forward. Along the inclined surface of the end of the locking pin 3, the locking pin 3 is squeezed to slide in a direction away from the limiting member 4.

[0031] In this embodiment, by tilting the rear side of the locking pin 3 end, when assembling the chair seat, the locking pin 3 automatically slides along the inclined surface as the limiting part 410 pushes forward, eliminating the need to manually adjust the locking pin 3 to avoid the limiting part 4, thus improving the ease of chair seat assembly. In the locked state, the limiting part 410 abuts against the plane on the front side of the locking pin 3, and the locking pin 3 will not move under the pushing of the limiting part 410, ensuring the stability of the chair seat after assembly.

[0032] Preferably, the rear side of the locking pin 3 end and the front end of the limiting part 410 are both inclined, so that the transmission between the two is more stable and smooth, further improving the ease of chair assembly operation.

[0033] Please refer to the attached document. Figure 5 and attached Figure 9 In some embodiments of this application, an elastic element 5 is provided on the base 2, and the elastic force of the elastic element 5 acts on the locking pin 3, causing the locking pin 3 to tend to move toward the limiting element 4.

[0034] In this embodiment, when assembling the chair seat, when the locking pin 3 moves away from the limiting member 4 under the push of the limiting part 410, the elastic member 5 undergoes elastic deformation; so that when the seat cushion 1 slides forward to align with the base 2, the locking pin 3 can automatically pop outward under the elastic force of the elastic member 5 and abut against the rear end of the limiting part 410, that is, the user does not need to manually adjust the locking pin 3 to switch the chair seat to the locked state, thereby further improving the ease of chair seat assembly operation.

[0035] Please refer to the attached document. Figure 5 In some embodiments of this application, the base 2 is provided with two sets of locking pins 3 on the left and right, and the bottom of the cushion 1 is provided with two sets of limiting members 4 accordingly. The elastic member 5 is disposed between the two sets of locking pins 3, so that the locking pins 3 on each side have a tendency to move toward the limiting member 4. In this embodiment, by setting two sets of locking pins 3 and limiting members 4, not only is the connection strength between the seat cushion 1 and the base 2 higher in the locked state, but the two sets of locking pins 3 are also connected by the same elastic member 5, so that the two locking pins 3 tend to move away from each other and towards the limiting members 4 on the corresponding side, and the connection structure is relatively simple.

[0036] Preferably, the elastic element 5 is a spring, which is not only highly elastic but also inexpensive. Of course, in other embodiments of this application, the elastic element 5 can also be made of rubber, sheet metal, etc.

[0037] Please refer to the attached document. Figure 5-6 In some embodiments of this application, a receiving groove 201 extending in the left-right direction is recessed on the base 2, and an movable hole 202 is hollowed out on the side wall of the receiving groove 201. The locking pin 3 includes a positioning part 310 with a width similar to that of the receiving groove 201. The positioning part 310 is slidably connected to the base 2 through the receiving groove 201, and the locking pin 3 passes through the movable hole 202 out of the receiving groove 201.

[0038] In this embodiment, the locking pin 3 is installed by setting the receiving groove 201. The positioning part 310 of the locking pin 3 slides along the receiving groove 201, so that the locking pin 3 can slide left and right relative to the base 2. The connection strength is high, which makes the assembly operation of the chair seat more stable.

[0039] Please refer to the attached document. Figure 3 and attached Figure 5 In some embodiments of this application, a cover plate 6 is screwed onto the base 2, and the cover plate 6 is configured to cover the receiving groove 201. By covering the receiving groove 201 with the cover plate 6, the locking pin 3 and the base 2 are relatively fixed in the vertical direction, which further improves the connection strength and stability. Moreover, the cover plate 6 is fixed to the base 2 by screw connection, which makes installation and disassembly relatively convenient.

[0040] Please refer to the attached document. Figure 6 and attached Figure 10 In some embodiments of this application, an unlocking member 7 is slidably connected to the base 2 along the front-back direction. The unlocking member 7 includes a top pushing part 710 and a locking pin 3 includes a bottom linkage part 320. The rear end face of the linkage part 320 and / or the front end face of the pushing part 710 are inclined so that when the unlocking member 7 slides back and forth, the pushing part 710 presses the linkage part 320 and forces the linkage part 320 to move in the horizontal direction, thereby causing the locking pin 3 to move away from the limiting member 4.

[0041] In this embodiment, by using the movable unlocking member 7, the pushing part 710 presses the linkage part 320 and drives the locking pin 3 away from the limiting member 4, the chair seat can be controlled to switch from the locked state to the unlocked state, and the seat cushion 1 can be removed from the base 2. The locking pin 3 is moved by the inclined surface of the rear end face of the linkage part 320 and / or the front end face of the pushing part 710. The connection structure is simple and makes the disassembly operation of the chair seat very convenient.

[0042] Preferably, the top of the unlocking component 7 is provided with two left and right pushing parts 710, which abut against the linkage part of the corresponding locking pin 3. When the unlocking component 7 moves, it simultaneously drives the locking pins 3 on both sides to move inward, so that the limiting components 4 on both sides can be disengaged from the locking pins 3, and the seat cushion 1 can be removed, further improving the convenience of the chair disassembly operation.

[0043] Preferably, the rear end face of the linkage part 320 and the front end face of the pushing part 710 are both inclined. This makes the transmission between the two more stable and smooth, further improving the ease of chair assembly.

[0044] Please refer to the attached document. Figure 6-7 In some embodiments of this application, the bottom of the cushion 1 is provided with two sets of left and right symmetrical limiting members 4, and the base 2 is formed with two side abutting parts 250 extending in the front and back directions. Each side abutting part 250 abuts against the side of the limiting member 4 away from the locking pin 3, so that the base 2 and the cushion 1 are relatively fixed in the left and right directions.

[0045] In this embodiment, the limiting member 4 is clamped by the side abutment portions 250 on both sides. When assembling the chair seat, as the seat cushion 1 slides forward, the limiting member 4 adheres to and slides along the side abutment portions 250, so that the seat cushion 1 and the base 2 remain relatively fixed in the left and right directions. This not only further improves the connection strength between the two, but also makes the installation operation of the seat cushion 1 more stable and smooth.

[0046] Please refer to the attached document. Figure 4-5 In some embodiments of this application, the quick-installation assembly further includes several sliders 8 disposed at the bottom of the seat cushion 1 and a front support portion 260 disposed laterally at the top of the base 2. In the locked state, the front end of the slider 8 abuts against the front support portion 260.

[0047] In this embodiment, when a user uses the chair seat, the user's buttocks exert a forward pushing force on the seat cushion 1. The seat cushion 1 is only restrained by the abutment portion 210 and the limiting member 4, resulting in a low connection strength between the seat cushion 1 and the base 2 in the front-back direction. This could cause the seat cushion 1 to slip forward off the base 2. Therefore, by adding a slider 8 to the bottom of the seat cushion 1, in the locked state, the front end of the limiting member 4 abuts against the abutment portion 210, and the front end of the slider 8 abuts against the front support portion 260, thereby further enhancing the connection strength between the seat cushion 1 and the base 2 in the front-back direction and effectively preventing the seat cushion 1 from slipping forward off the base during use.

[0048] Please refer to the attached document. Figure 4-5In some embodiments of this application, the bottom of the cushion 1 is provided with two symmetrical sliders 8, and the base 2 is formed with two side support portions 270 extending in the front-back direction. The two sliders 8 are located between the side support portions 270 on both sides, and the side support portion 270 on each side abuts against the side wall of the slider 8, so that the base 2 and the cushion 1 are relatively fixed in the left-right direction.

[0049] In this embodiment, the slider 8 is clamped by the side support portions 270 on both sides. When assembling the chair seat, as the seat cushion 1 slides forward, the slider 8 adheres to and slides along the side support portions 270, so that the seat cushion 1 and the base 2 remain relatively fixed in the left and right directions, which further improves the connection strength between the two and makes the installation operation of the seat cushion 1 more stable and smooth.

[0050] Please refer to the attached document. Figure 2 and attached Figure 6 In some embodiments of this application, the base 2 is hollowed out in the vertical direction to form a through hole 203, and the unlocking member 7 includes an operating part 720 at the bottom. The unlocking member 7 is slidably connected to the base 2 through the through hole 203, and the operating part 720 passes through the through hole 203 and is exposed at the bottom of the base 2.

[0051] In this embodiment, the operating part 720 is exposed at the bottom of the base 2, meaning that the user can move the unlocking part 7 by turning the operating part 720 at the bottom, thereby adjusting the chair seat from the locked state to the unlocked state, further improving the convenience of the chair seat disassembly operation.

[0052] Please refer to the attached document. Figure 3-4 In some embodiments of this application, the latch includes a plurality of first latches 220 disposed on the top of the base 2, with the hook heads of the first latches 220 facing rearward, and a plurality of first slots 110 disposed on the bottom of the cushion 1. In the locked state, the first latches 220 and the first slots 110 engage, thereby fixing the cushion 1 and the base 2 relatively in the vertical direction. When assembling the chair seat, as the cushion 1 moves forward, the first slots 110 engage with the hook heads of the first latches 220, thereby fixing the cushion 1 to the base 2. The structure is simple and the assembly operation is relatively convenient. The first latches 220 are easy to be disposed at the bottom of the recessed part on the base 2.

[0053] Preferably, near the edge of the base 2, the base 2 is provided with six sets of first hooks 220, and the bottom of the cushion 1 is provided with six sets of first slots 110 to ensure the connection strength between the cushion 1 and the base 2.

[0054] Please refer to the attached document. Figure 3-4In some embodiments of this application, the latch includes a plurality of second latches 120 disposed at the bottom of the seat cushion 1, with the hook heads of the second latches 120 facing forward. The latch includes a plurality of second latches 230 formed at the top of the base 2. In the locked state, the second latches 120 and the second latches 230 engage with each other, thereby fixing the seat cushion 1 and the base 2 relatively in the vertical direction. When assembling the chair seat, as the seat cushion 1 moves forward, the second latches 120 move backward into the second latches 230, thereby fixing the seat cushion 1 to the base 2. The structure is simple and the assembly operation is relatively convenient. The second latches 230 are formed on the vertical plate-like part of the base 2.

[0055] Preferably, near the edge of the seat cushion 1, two sets of second hooks 120 are provided on the seat cushion 1, and two sets of second slots 230 are correspondingly provided on the top of the base 2 to ensure the connection strength between the seat cushion 1 and the base 2.

[0056] Please refer to the attached document. Figure 3-4 In some embodiments of this application, the bottom of the seat cushion 1 is provided with two symmetrical third hooks 130, with the hook heads of the two third hooks 130 facing towards each other. The top of the base 2 is provided with two symmetrical fourth hooks 240, with the hook heads of the two fourth hooks 240 facing away from each other. In the locked state, the vertically opposite third hooks 130 and fourth hooks 240 engage, fixing the seat cushion 1 and the base 2 relatively in the left-right direction. When assembling the chair seat, as the seat cushion 1 moves forward, the third hooks 130 slide backward to engage with the fourth hooks 240. Since the hook heads of the two sets of third hooks 130 and fourth hooks 240 are all facing opposite directions, the seat cushion 1 cannot slide left-right relative to the base 2. The structure is simple and the assembly operation is relatively convenient.

[0057] The quick-release seat cushion provided in this application operates as follows: Please refer to the attached document. Figure 7 When assembling the chair seat, first place the seat cushion 1 at the rearmost position on top of the base 2. At this time, the chair seat is in the unlocked state, the hooks are disengaged from the slots, and the locking pin 3 avoids the limiting piece 4. Please refer to the attached document. Figure 8 Then, the seat cushion 1 is pushed forward, the limiting member 4 moves forward, and pushes the locking pin 3 through the limiting part 410. Under the guidance of the inclined surfaces at the ends of the limiting part 410 and the locking pin 3, the locking pins 3 on both sides are forced to move inward synchronously. Please refer to the appendix. Figure 9Until the seat cushion 1 and base 2 are aligned, the front end of the limiting member 4 abuts against the abutment part 210. The locking pins 3 on both sides automatically push outward under the elastic force of the elastic member 5 and abut against the rear side of the limiting part 410, thus clamping the limiting member 4 between the locking pins 3 and the abutment part 210. The first hook 220 engages with the first slot 110, the second hook 120 engages with the second slot 230, and the third hook 130 and the fourth hook 240 engage with each other, fixing the seat cushion 1 and base 2 relatively in the vertical and horizontal directions. The chair automatically switches from the unlocked state to the locked state, and the seat cushion 1 and base 2 are assembled and fixed. Please refer to the attached document. Figure 10 When the seat needs to be disassembled, the user moves the operating part 720 at the bottom of the base 2 forward, the unlocking part 7 moves forward, and the pushing part 710 pushes the linkage part 320 forward. Under the guidance of the inclined surfaces of the pushing part 710 and the linkage part 320, the locking pins 3 on both sides move inward simultaneously, thereby avoiding the limiting part 4. The seat switches from the locked state to the unlocked state. Then, the seat cushion 1 can be pulled back to disengage the limiting part 4 from between the locking pin 3 and the abutment part 210. The first hook 220 disengages from the first slot 110, the second hook 120 disengages from the second slot 230, and the third hook 130 disengages from the fourth hook 240, completing the disassembly operation between the seat cushion 1 and the base 2.

[0058] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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 of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means three or more.

[0059] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A chair seat with a quick-release cushion, characterized in that, The device includes a top seat cushion (1) and a bottom base (2), which are detachably connected by a quick-release assembly. The quick-release assembly includes several sets of interlocking hooks and slots. The hooks are located in one of the seat cushion (1) and the base (2), and the slots are located in the other of the seat cushion (1) and the base (2). When the hooks are engaged in the slots, the seat cushion (1) and the base (2) remain relatively fixed in the vertical and horizontal directions. The quick-release assembly also includes a locking pin (3) and a limiting member (4). The locking pin (3) is movably connected to the base (2) in the left and right directions, and the base (2) has an abutment portion (210) located in front of the locking pin (3). The limiting member (4) is located at the bottom of the seat cushion (1). The quick-release seat has a switchable locked state and an unlocked state. In the unlocked state, the locking pin (3) moves to avoid the limiting member (4), and the limiting member (4) can slide back and forth relative to the locking pin (3) and the abutment (210). The seat cushion (1) can slide backward until the hook disengages from the slot, thereby separating the seat cushion (1) and the base (2). In the locked state, the seat cushion (1) slides forward to align with the base (2), the hook engages in the slot, the front side of the limiting member (4) abuts against the abutment (210), and the locking pin (3) moves to abut against the rear side of the limiting member (4). The limiting member (4) is clamped between the locking pin (3) and the abutment (210), and the seat cushion (1) and the base (2) are assembled and fixed.

2. The chair seat with a quick-release cushion according to claim 1, characterized in that, The limiting member (4) includes a limiting part (410) at the bottom. The front end face of the limiting part (410) is inclined. When switching from the unlocked state to the locked state, the cushion (1) slides forward relative to the base (2). The limiting part (410) pushes the locking pin (3) forward. Along the front end face of the limiting part (410), the locking pin (3) is squeezed to slide away from the limiting member (4).

3. The chair seat with a quick-release cushion according to claim 1, characterized in that, The rear side of the end of the locking pin (3) is inclined. When switching from the unlocked state to the locked state, the seat (1) slides forward relative to the base (2), and the limiting member (4) pushes the locking pin (3) forward. Along the inclined surface of the end of the locking pin (3), the locking pin (3) is squeezed to slide away from the limiting member (4).

4. The chair seat with a quick-release cushion according to claim 1, characterized in that, An elastic element (5) is provided on the base (2), and the elastic force of the elastic element (5) acts on the locking pin (3), so that the locking pin (3) tends to move toward the limiting element (4).

5. The chair seat with a quick-release cushion according to claim 4, characterized in that, The base (2) is provided with two sets of locking pins (3) on the left and right sides, and the bottom of the cushion (1) is provided with two sets of limiting members (4). The elastic member (5) is provided between the two sets of locking pins (3), so that the locking pins (3) on each side have a tendency to move toward the limiting member (4).

6. The chair seat with a quick-release cushion according to claim 1, characterized in that, The base (2) has a recessed receiving groove (201) extending in the left and right direction. The side wall of the receiving groove (201) has a hollowed-out movable hole (202). The locking pin (3) includes a positioning part (310) with a width similar to that of the receiving groove (201). The positioning part (310) is slidably connected to the base (2) through the receiving groove (201), and the locking pin (3) passes through the movable hole (202) out of the receiving groove (201).

7. The chair seat with a quick-release cushion according to claim 6, characterized in that, A cover plate (6) is screwed onto the base (2), and the cover plate (6) is configured to cover the receiving groove (201).

8. The chair seat with a quick-release cushion according to claim 1, characterized in that, The base (2) is slidably connected to an unlocking member (7) along the front and back direction. The unlocking member (7) includes a top pushing part (710) and the locking pin (3) includes a bottom linkage part (320). The rear end face of the linkage part (320) and / or the front end face of the pushing part (710) are inclined so that when the unlocking member (7) slides back and forth, the pushing part (710) squeezes the linkage part (320) and forces the linkage part (320) to move in the horizontal direction, thereby causing the locking pin (3) to move away from the limiting member (4).

9. The chair seat with a quick-release cushion according to claim 8, characterized in that, The base (2) has a through hole (203) formed in the vertical direction. The unlocking part (7) includes an operating part (720) at the bottom. The unlocking part (7) is slidably connected to the base (2) through the through hole (203), and the operating part (720) passes through the through hole (203) and is exposed at the bottom of the base (2).

10. The chair seat with a quick-release cushion according to claim 1, characterized in that, The bottom of the cushion (1) is provided with two sets of limiting members (4) symmetrically arranged on the left and right. The base (2) has two side abutment portions (250) extending in the front and back directions. Each side abutment portion (250) abuts against the side of the limiting member (4) away from the locking pin (3), so that the base (2) and the cushion (1) are relatively fixed in the left and right directions.

11. The chair seat with a quick-release cushion according to claim 1, characterized in that, The quick-installation assembly also includes several sliders (8) disposed at the bottom of the seat cushion (1) and a front support (260) disposed horizontally at the top of the base (2). In the locked state, the front end of the slider (8) abuts against the front support (260).

12. The chair seat with a quick-release cushion according to claim 11, characterized in that, The bottom of the cushion (1) is provided with two sliders (8) symmetrically arranged on the left and right. The base (2) has two side support parts (270) extending in the front and back directions. The two sliders (8) are located between the side support parts (270) on both sides, and the side support part (270) on each side abuts against the side wall of the slider (8), so that the base (2) and the cushion (1) are relatively fixed in the left and right directions.

13. The chair seat with a quick-release cushion according to claim 1, characterized in that, The hooks include a plurality of first hooks (220) disposed on the top of the base (2), with the hook heads of the first hooks (220) facing backwards. The slots include a plurality of first slots (110) disposed on the bottom of the cushion (1). In the locked state, the first hooks (220) and the first slots (110) engage and cooperate, so that the cushion (1) and the base (2) are relatively fixed in the vertical direction.

14. The chair seat with a quick-release cushion according to claim 1, characterized in that, The hooks include a plurality of second hooks (120) disposed at the bottom of the cushion (1), with the hook heads of the second hooks (120) facing forward. The slots include a plurality of second slots (230) opened at the top of the base (2). In the locked state, the second hooks (120) and the second slots (230) engage and cooperate, so that the cushion (1) and the base (2) are relatively fixed in the vertical direction.

15. The chair seat with a quick-release cushion according to claim 1, characterized in that, The bottom of the cushion (1) is provided with two symmetrical third hooks (130), with the hook heads of the two third hooks (130) facing towards each other. The top of the base (2) is provided with two symmetrical fourth hooks (240), with the hook heads of the two fourth hooks (240) facing away from each other. In the locked state, the upper and lower opposing third hooks (130) and fourth hooks (240) engage with each other, so that the cushion (1) and the base (2) are relatively fixed in the left and right direction.

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