Seat cushion
By using a pin on the seat cushion to adjust the backrest angle, the problem of complex adjustment structure of the existing posture cushion is solved, which achieves convenient operation and cost-reducing effects, and supports self-replacement of the diagonal support.
Patent Information
- Application Number
- CN202422794988.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-16
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-16
AI Technical Summary
The adjustment structure of the existing cushion is complex, which increases production and use costs, and is inconvenient to operate.
The latch is used as the adjustment part of the oblique support. The tilt angle of the backrest is adjusted by fixing the latch in different mounting holes. The latch is designed with beads and elastic parts to ensure stability and convenient operation.
It simplifies the adjustment process, reduces production costs, improves the user's operating convenience, and supports self-replacement of the diagonal support, which enhances the stability and safety of the pins.
Smart Images
Figure CN223286836U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of seat cushion structures, in particular to a seat cushion. Background Art
[0002] As people's living standards continue to improve, the way people work has also changed dramatically. Many professional jobs are completed through computers, and employees often sit in front of computers all day long. However, long-term sitting will not only make employees feel exhausted, but also cause damage to their spine, lumbar spine, and sciatic nerve. In addition, employees often unconsciously maintain incorrect sitting postures during fatigue work, which can easily cause hunchbacks, affecting their personal image and normal life. Most posture correction cushions on the market have an integrated backrest and seat cushion, and because the backrest and seat cushion are set in an L-shape, it is inconvenient to move and transport the posture correction cushions.
[0003] Therefore, foldable posture-correcting seat cushions have appeared on the market. For example, Chinese patent CN2023200563627 discloses an angle-adjustable chair, comprising a bottom plate and a back plate hinged to each other, with diagonal braces provided at the rear of the bottom plate and the back plate. By adjusting the position of the diagonal braces, the inclination angle between the back plate and the bottom plate can be adjusted; a soft cushion can also be detachably provided on the bottom plate and the back plate; the back plate is provided with a plurality of teeth, and the diagonal brace can abut against the lower end of one of the teeth, thereby limiting the back plate from tilting backward; a mounting seat is provided at the upper end of the diagonal brace, and a positioning member is movably provided in the mounting seat; the back plate is provided with a plurality of grooves, and a return spring applies force to the positioning member to extend into the mounting seat and abut against one of the grooves; and a push button is provided, which is movably provided on the mounting seat. When the push button is pushed, the push button drives the positioning member out of the groove. This product allows users to adjust the tilt angle of the backrest, but the adjustment structure also has certain shortcomings: the adjustment structure is too complicated, which greatly increases the production cost of the manufacturer and indirectly increases the purchase cost for the user; the adjustment structure is too complicated and the user's operation is not convenient enough. Summary of the Invention
[0004] The utility model aims to provide a seat cushion which is convenient for adjusting the angle of the backrest.
[0005] The purpose of this utility model is achieved in this way:
[0006] A seat cushion comprises a seat cushion main body, a backrest hingedly connected to the rear portion of the seat cushion main body, a diagonal support member arranged between the seat cushion main body and the backrest, one end of the diagonal support member being connected to the seat cushion main body and the other end being connected to the backrest; the seat cushion main body is provided with an extension section at the rear portion of the backrest, the extension section is provided with a hinge seat, and the lower end of the diagonal support member is rotatably connected to the hinge seat; two connecting seats are symmetrically arranged on the back of the backrest, the connecting seats are longitudinally provided with at least two mounting holes, the end portion of the diagonal support member is provided with a through hole, and a pin passes through the mounting hole of the connecting seat on one side, the through hole of the diagonal support member and the mounting hole of the connecting seat on the other side in sequence; the pin is fixed in different mounting holes, and the inclination angle of the backrest is different.
[0007] One end of the latch is provided with a large diameter end or a blocking piece, which limits this end of the latch from entering the mounting hole; a blocking bead is provided on the side wall of the other end of the latch, which moves toward the inside of the latch, and the blocking bead does not affect the latch, and the latch can enter and exit the mounting hole and the through hole.
[0008] The diagonal support member includes a V-shaped metal rod and a fixing seat. The fixing seat is located at the end of the V-shaped metal rod. The two legs of the V-shaped metal rod extend to both sides to form a hinge axis. The hinge seat of the seat cushion body is a hinge hole located on both sides. When the V-shaped metal rod is pressed, the two legs of the V-shaped metal rod are deformed, and the hinge axis can enter and exit the corresponding hinge hole.
[0009] The fixing seat is provided with the perforation; the width of the fixing seat is less than or equal to the gap between the two connecting seats.
[0010] A movable pin is slidingly provided at the middle of the latch, and the movable pin is provided with a small-diameter section; a limiting hole is provided on the side wall of the latch, a blocking bead is provided in the limiting hole, and the movable pin is located at the rear of the blocking bead; the movable pin is pushed and the small-diameter section is located at the rear of the blocking bead, the blocking bead can move toward the inside of the latch, and the blocking bead does not affect the latch from entering and exiting the mounting hole and the through-hole; the movable pin is pushed and the non-small-diameter section is located at the rear of the blocking bead, the blocking bead is located outside the limiting hole, and the latch at the blocking bead position cannot enter or exit the mounting hole and the through-hole.
[0011] An elastic member is provided in the latch, which acts on the movable pin and positions the non-small diameter section of the movable pin behind the blocking bead; the elastic member includes a pushing portion, one end of the elastic member rests on the latch, and the other end of the elastic member rests on the pushing portion.
[0012] It includes a fixing sleeve, a first clamping portion is provided at the end of the latch, and a second clamping portion is provided on the fixing sleeve to be fixed to the first clamping portion. The fixing sleeve is larger than the mounting hole and cannot enter the mounting hole. The pushing portion of the latch passes through the fixing sleeve and is exposed to the outside. Moreover, the elastic member is located in the gap between the fixing sleeve and the latch.
[0013] The side walls of the latch are evenly distributed with at least two limiting holes, and blocking beads are correspondingly arranged in the limiting holes, and the blocking beads cannot be separated from the limiting holes.
[0014] A limiting hole is provided on the side wall of the latch, and an elastic member and a blocking bead are provided in the limiting hole. The elastic member gives the blocking bead a force to move outward, and the blocking bead cannot be separated from the limiting hole.
[0015] A metal ring is rotatably provided on the other end of the latch pin and the retaining bead.
[0016] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:
[0017] 1. The present invention adopts a latch as an adjustment component of the diagonal brace. The user removes the latch and then fixes the fixing seat on different mounting holes to adjust the tilt angle of the backrest. The latch is preferably a metal part, which has strong stability and is very easy for the user to operate. The diagonal brace of the present application can be completely removed from the seat cushion body and the backrest. If the diagonal brace is damaged or deformed, the manufacturer will provide the diagonal brace to the user, and the user can replace it by himself. Pull out the latch, and the diagonal brace is separated from the backrest; press the V-shaped metal rod, and the two legs of the V-shaped metal rod will be deformed, and the hinge shaft can be withdrawn from the corresponding hinge hole, and the diagonal brace is separated from the seat cushion body.
[0018] 2. A stop bead is provided at one end of the latch of the present invention, and a large-diameter end or a stopper is provided at the other end of the latch; the side provided with the stop bead is used to pass through the mounting hole and the through hole. When the latch is installed, the stop bead and the large-diameter end or the stopper are respectively located on the sides of the two connecting seats, thereby preventing the latch from accidentally falling off. The user needs to move the drive stop bead toward the inside of the latch before removing the latch.
[0019] 3. The latch of the present invention can have at least the following two structures: Structure 1, one end of the latch is provided with a stop bead pressed by an elastic member, and the other end is provided with a metal ring. When the user pushes the latch with force and passes it through the mounting hole or through-hole, the stop bead will adaptively move inward. In the absence of external force, the stop bead is located on the outside and limits the position of the latch; the user can pull the metal ring to pull out the latch. Structure 2, the movable pin in the latch is provided with a small-diameter end; the user presses the pushing part to push the small-diameter end to the rear of the stop bead, and the stop bead can move inward, and the latch can freely enter and exit the mounting hole or through-hole. Both methods are acceptable, and the manufacturer can freely choose one of them according to actual conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural diagram of the utility model;
[0021] Figure 2 This is a schematic structural diagram of Example 1 of the present utility model;
[0022] Figure 3 This is one of the explosion structure diagrams of Example 1 of the present utility model;
[0023] Figure 4 This is the second schematic diagram of the explosion structure of Example 1 of the present utility model;
[0024] Figure 5 yes Figure 4 A schematic diagram of the enlarged structure at point A;
[0025] Figure 6 This is a schematic diagram of the latch structure of Example 1 of the present utility model;
[0026] Figure 7 This is one of the schematic diagrams of the internal structure of the latch in Example 1 of the present utility model;
[0027] Figure 8 This is the second schematic diagram of the internal structure of the latch in Example 1 of the present utility model;
[0028] Figure 9 This is a schematic diagram of the exploded structure of the latch in Example 1 of the present utility model;
[0029] Figure 10 This is a schematic structural diagram of Example 2 of the present utility model;
[0030] Figure 11 yes Figure 10 A schematic diagram of the enlarged structure at point B;
[0031] Figure 12 This is a schematic diagram of the latch structure of Example 2 of the present utility model;
[0032] Figure 13 This is a schematic diagram of the exploded structure of the latch in Example 2 of the present utility model.
[0033] In the figure: 1-seat cushion body; 11-extension section; 111-hinge seat; 2-backrest; 21-connecting seat;
[0034] 211-mounting hole; 3-diagonal support; 31-V-shaped metal rod; 311-hinge shaft; 32-fixing seat; 321-through hole; 4-latch pin; 40-stop bead; 41-limiting hole; 42-first clamping part; 5-fixing sleeve; 51-second clamping part; 6-movable pin; 61-pushing part; 62-small diameter section; 7-metal ring; 9-spring. DETAILED DESCRIPTION
[0035] The present invention will be further described below with reference to specific embodiments of the present invention. Figure 1-13 As shown:
[0036] A seat cushion comprises a seat cushion body 1, with a backrest 2 hinged to the rear of the seat cushion body 1. Preferably, both sides of the backrest are hinged to the seat cushion body, and a hollow space is formed between the middle of the backrest and the seat cushion body. The user's lumbar spine can be located in the hollow space, reducing squeezing and making the user more comfortable when sitting. A diagonal brace 3 is provided between the seat cushion body 1 and the backrest 2, with one end of the diagonal brace 3 connected to the seat cushion body 1 and the other end connected to the backrest 2; the seat cushion body 1 is provided with an extension section 11 at the rear of the backrest, and a hinge seat 111 is provided on the extension section 11. The lower end of the diagonal brace 3 is rotatably connected to the hinge seat 111, that is, the diagonal brace 3 is located at the rear of the backrest 2 and will not affect the user's sitting. The backrest 2 is symmetrically provided with two connecting seats 21. The connecting seats 21 are longitudinally provided with at least two mounting holes 211. The ends of the diagonal bracing members 3 are provided with through-holes 321. The latch 4 passes through the mounting hole 211 of the connecting seat on one side, the through-hole 321 of the diagonal bracing member, and the mounting hole 211 of the connecting seat on the other side in sequence. The latch 4 is simultaneously limited by multiple holes, making the latch support more stable. The latch is made of metal, which has greater stability and is conducive to long-term use. The user fixes the latch 4 in different mounting holes 211, and the inclination angle of the backrest 2 is different. As a preference, the connecting seat 21 is longitudinally provided with two to four mounting holes 211 to provide the user with a certain amount of adjustment space. In fact, in order to maintain the posture correction effect, the user's comfortable angle range is not particularly large. When the user removes the disassembled backrest, it can be placed against the seat cushion body, effectively reducing the storage space of the seat cushion. In the folded state, the latch can still be inserted into the mounting hole of the connecting seat to avoid the latch being lost.
[0037] One end of the latch 4 is provided with a large-diameter end or a stopper, which restricts this end from entering the mounting hole. A stopper bead 40 is provided on the sidewall of the other end of the latch 4. The stopper bead 40 moves inwardly of the latch 4 without interfering with the latch 4, allowing the latch 4 to enter and exit the mounting hole 211 and the through-hole 321. When the latch is installed, the stopper bead and the large-diameter end or stopper are located on the sides of the two connecting seats, respectively, to prevent the latch 4 from accidentally falling. The user needs to move the stopper bead inwardly of the latch to remove the latch.
[0038] The diagonal brace 3 includes a V-shaped metal rod 31 and a fixing seat 32. The fixing seat 32 is located at the end of the V-shaped metal rod 31. The two legs of the V-shaped metal rod 31 extend to both sides to form hinge shafts 311. The hinge seats 111 of the seat cushion body 1 are hinge holes located on both sides. Pressing the V-shaped metal rod deforms the two legs of the V-shaped metal rod, and the hinge shafts 311 can enter and exit the corresponding hinge holes. Through this structure, the user can easily remove the diagonal brace 3 from the seat cushion body 1, which not only facilitates assembly by the manufacturer but also facilitates the user to replace the diagonal brace 3. If the diagonal brace 3 is damaged or deformed, the manufacturer provides the diagonal brace 3 to the user, who can replace it himself. Preferably, the V-shaped metal rod 31 and the fixing seat 32 are formed as a whole by an integrated molding method. The fixing seat 32 is a plastic part. During injection molding, the end of the V-shaped metal rod 31 and the plastic part are injection molded to form a whole. Of course, the V-shaped metal rod 31 and the fixing seat 32 can also be fixed by other fixing methods.
[0039] The fixing seat 32 is provided with the perforation 321; the width of the fixing seat is less than or equal to the gap between the two connecting seats. Preferably, the inner diameter of the mounting hole and the perforation is equal to or slightly smaller than the outer diameter of the latch. This reduces shaking and provides a more stable sitting position for the user. The specific diameter setting is not the focus of this application and is determined by the manufacturer before shipment.
[0040] Example 1: Figure 2-9 As shown. A movable pin 6 is slidingly provided in the middle of the latch 4, and the movable pin 6 is provided with a small diameter section 62; a limiting hole 41 is provided on the side wall of the latch 4, and a blocking bead 40 is provided in the limiting hole 41, and the movable pin 6 is located at the rear of the blocking bead 40; the movable pin 6 is pushed and the small diameter section 62 is located at the rear of the blocking bead 40, and the blocking bead can move toward the inside of the latch, and the blocking bead does not affect the latch from entering and exiting the mounting hole and the through-hole; the movable pin 6 is pushed and the non-small diameter section is located at the rear of the blocking bead, and the blocking bead is located outside the limiting hole, and the latch at the blocking bead position cannot enter and exit the mounting hole and the through-hole. Preferably, an elastic member is provided in the latch 4, and the elastic member acts on the movable pin 6 and allows the non-small diameter section of the movable pin to be located at the rear of the blocking bead 40; it includes a pushing portion 61, one end of the elastic member rests on the latch 4, and the other end of the elastic member rests on the pushing portion 61. Under normal conditions, the elastic member acts to hold the movable pin 6 at the non-small-diameter end 62 at the rear of the retaining bead 40, maintaining the retaining bead 40 in an outwardly pushed-out position and preventing the retaining bead 40 from entering or exiting the mounting hole 211 or the through-hole 321. When the user presses the push portion 61, the retaining bead 40 enters the small-diameter end 62, allowing the retaining bead 40 to enter or exit the mounting hole 211 or the through-hole 321. The user only needs to press the push portion 61, making operation simple. The elastic member may be a common component such as a spring 9 or an elastic soft rubber.
[0041] The invention comprises a fixing sleeve 5, wherein the end of the latch is provided with a first clamping portion 42, and the fixing sleeve 5 is provided with a second clamping portion 51 fixed to the first clamping portion 42. The fixing sleeve 5 is larger than the mounting hole 211 and serves as the large-diameter end of one end of the latch. The fixing sleeve 5 cannot enter the mounting hole 211; the push portion 61 of the latch passes through the fixing sleeve 5 and is exposed to the outside; and the elastic member is located in the gap between the fixing sleeve 5 and the latch 4. The provision of the fixing sleeve 5 makes assembly more convenient for manufacturers. The spring is connected to the movable pin 6, and then the movable pin 6 is removed and inserted into the latch 4, and then sealed and fixed by the fixing sleeve 5. The push portion 61 can be the large-diameter end of the movable pin, or it can be an independent component, and the push portion is fixed to the end of the movable pin.
[0042] The side walls of the latch 4 are evenly distributed with at least two limiting holes 41, and corresponding retaining beads 40 are provided in the limiting holes 41. The retaining beads 40 cannot be separated from the limiting holes 41. The retaining beads 40 are provided on both sides to better achieve the limiting. The retaining beads 40 are preferably round beads, which will have better adaptability. The diameter of the mouth of the limiting hole is smaller than the maximum diameter of the round bead, or the overall diameter of the limiting hole is larger than the maximum diameter of the round bead. After the round bead is placed in the limiting hole, it impacts the mouth of the limiting hole, causing the mouth of the limiting hole to deform and prevent the round bead from escaping from the limiting hole.
[0043] Example 2: Figure 10-13 As shown. The difference between Example 2 and Example 1 is that the structure of the latch is different. The side wall of the latch 4 is provided with a limiting hole 41, and an elastic member and a blocking bead 40 are provided in the limiting hole 41. The elastic member gives the blocking bead 40 a force to move outward, and the blocking bead 40 cannot be separated from the limiting hole 41. The blocking bead 40 can be the shape shown in the accompanying drawings, and a step portion is provided at the rear of the blocking bead to prevent the blocking bead from being separated from the limiting hole; the blocking bead can also be a round bead, and the diameter of the mouth of the limiting hole is smaller than the maximum diameter of the round bead, or the overall diameter of the limiting hole is larger than the maximum diameter of the round bead. After the round bead is placed in the limiting hole, it impacts the mouth of the limiting hole, so that the mouth of the limiting hole is deformed and the round bead is prevented from being separated from the limiting hole. A metal ring 7 is rotatably provided at the other end of the blocking bead on the latch 4. The user can pull the metal ring 7 and then remove the latch 4. The elastic member can be a common component such as a spring and elastic soft rubber.
[0044] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.
Claims
1. A seat cushion comprising a seat cushion body, a backrest hingedly connected to the rear portion of the seat cushion body, a diagonal brace provided between the seat cushion body and the backrest, one end of the diagonal brace connected to the seat cushion body and the other end connected to the backrest; characterized in that: The seat cushion body is provided with an extension section at the rear part of the backrest, and a hinge seat is provided on the extension section, and the lower end of the diagonal support member is rotatably connected to the hinge seat; two connecting seats are symmetrically provided on the back of the backrest, and the connecting seats are longitudinally provided with at least two mounting holes, and the end of the diagonal support member is provided with a through hole, and the pin passes through the mounting hole of the connecting seat on one side, the through hole of the diagonal support member and the mounting hole of the connecting seat on the other side in sequence; the pin is fixed in different mounting holes, and the inclination angle of the backrest is different.
2. The seat cushion according to claim 1, characterized in that: The latch is a metal part; a large-diameter end or a blocking part is provided at one end of the latch, which limits this end of the latch from entering the mounting hole; a blocking bead is provided on the side wall of the other end of the latch, which moves toward the inside of the latch without affecting the latch, and the latch can enter and exit the mounting hole and the through hole.
3. The seat cushion according to claim 1 or 2, characterized in that: The diagonal support member includes a V-shaped metal rod and a fixing seat. The fixing seat is located at the end of the V-shaped metal rod. The two legs of the V-shaped metal rod extend to both sides to form a hinge axis. The hinge seat of the seat cushion body is a hinge hole located on both sides. When the V-shaped metal rod is pressed, the two legs of the V-shaped metal rod are deformed, and the hinge axis can enter and exit the corresponding hinge hole.
4. The seat cushion according to claim 3, characterized in that: The fixing seat is provided with the perforation; the width of the fixing seat is less than or equal to the gap between the two connecting seats.
5. The seat cushion according to claim 1, 2 or 4, characterized in that: A movable pin is slidingly provided at the middle of the latch, and the movable pin is provided with a small-diameter section; a limiting hole is provided on the side wall of the latch, a blocking bead is provided in the limiting hole, and the movable pin is located at the rear of the blocking bead; the movable pin is pushed and the small-diameter section is located at the rear of the blocking bead, the blocking bead can move toward the inside of the latch, and the blocking bead does not affect the latch from entering and exiting the mounting hole and the through-hole; the movable pin is pushed and the non-small-diameter section is located at the rear of the blocking bead, the blocking bead is located outside the limiting hole, and the latch at the blocking bead position cannot enter or exit the mounting hole and the through-hole.
6. The seat cushion according to claim 5, characterized in that: An elastic member is provided in the latch pin, and the elastic member acts on the movable pin and makes the non-small diameter section of the movable pin be located behind the blocking bead; It comprises a pushing portion, one end of the elastic member abuts against the latch, and the other end of the elastic member abuts against the pushing portion.
7. The seat cushion according to claim 6, characterized in that: It includes a fixing sleeve, a first clamping portion is provided at the end of the latch, and a second clamping portion is provided on the fixing sleeve to be fixed to the first clamping portion. The fixing sleeve is larger than the mounting hole and cannot enter the mounting hole. The pushing portion of the latch passes through the fixing sleeve and is exposed to the outside. Moreover, the elastic member is located in the gap between the fixing sleeve and the latch.
8. The seat cushion according to claim 6 or 7, characterized in that: The side walls of the latch are evenly distributed with at least two limiting holes, and blocking beads are correspondingly arranged in the limiting holes, and the blocking beads cannot be separated from the limiting holes.
9. The seat cushion according to claim 1, 2 or 4, characterized in that: A limiting hole is provided on the side wall of the latch, and an elastic member and a blocking bead are provided in the limiting hole. The elastic member gives the blocking bead a force to move outward, and the blocking bead cannot be separated from the limiting hole.
10. The seat cushion according to claim 9, characterized in that: A metal ring is rotatably provided on the other end of the latch pin and the retaining bead.