Adjustable sofa chair

Abstract

The utility model aims to provide an adjustable sofa chair which comprises a chair seat and an adjusting assembly, two sides of the chair seat are respectively provided with an armrest, the adjusting assembly comprises a turnover plate, a backrest, a linkage rod, a locking piece and a pull rod, one end of the turnover plate is rotatably arranged on the chair seat, the backrest is rotatably arranged at one end, far away from the turnover plate, of the chair seat, and the linkage rod is rotatably arranged at the other end of the turnover plate. The two ends of the linkage rod are rotationally connected with the lower end of the turnover plate and the lower end of the backrest respectively, the locking pieces are arranged in the armrests, one end of the pull rod is rotationally connected with the backrest, the other end of the pull rod penetrates through the locking pieces, and the locking pieces are used for clamping or loosening the pull rod. And the linkage rod drives the turnover plate to rotate. Therefore, the backrest and the folding plate can be adjusted relative to the chair seat, the structure is more compact and simpler, the reliability can be effectively improved, and the manufacturing cost can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to an adjustable sofa chair. Background Art

[0002] As a common piece of furniture in families and business premises, the comfort and functionality of a sofa chair directly determine the frequency of use by the user.

[0003] With the development of technology, there has emerged a sofa chair with an adjustable angle between the backrest and the seat cushion. For example, Chinese patent document with publication number CN108835989A discloses a fully reclining sofa chair, which includes a seat surface, a backrest, chair legs, a backrest support leg, and an adjustment mechanism for adjusting the angle between the seat surface and the backrest; the adjustment mechanism includes a switch, a seat surface adjustment rod, a center of gravity translation mechanism, and a support leg adjustment rod connected to the backrest support leg. The seat surface adjustment rod, the center of gravity translation mechanism, and the support leg adjustment rod are respectively rotatably connected to the chair legs; the seat surface adjustment rod is slidably connected to the seat surface; the center of gravity translation mechanism is used to translate the center of gravity of the backrest during the adjustment of the backrest. In this way, the opening and retraction actions of the backrest are achieved through the adjustment rod structure and the gear structure, the planar movement action of the backrest is achieved through the seat surface adjustment rod, the slider, and the slide rail, and the weight bearing is achieved by opening the backrest support leg through the support leg adjustment rod, solving the problem of the center of gravity moving backward.

[0004] However, the existing structure of such a sofa chair is too complex, not only with a high manufacturing cost, but also with too many structural parts, resulting in poor structural reliability. Therefore, designing a sofa chair with an adjustable angle between the backrest and the seat cushion and a simple structure to reduce the manufacturing cost is a technical problem that needs to be solved by those skilled in the art. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an adjustable sofa chair with an adjustable angle between the backrest and the seat cushion, a simple structure, and the ability to reduce the manufacturing cost.

[0006] The purpose of the utility model is achieved by the following technical solutions:

[0007] An adjustable sofa chair, comprising:

[0008] A seat, with an armrest respectively arranged on both sides of the seat; and

[0009] Adjusting assembly, the adjusting assembly includes a folding plate, a backrest, a linkage rod, a locking member and a pull rod. One end of the folding plate is rotatably arranged on the seat. The backrest is rotatably arranged at one end of the seat away from the folding plate. Two ends of the linkage rod are respectively rotatably connected to the lower end of the folding plate and the lower end of the backrest. The locking member is arranged in the armrest. One end of the pull rod is rotatably connected to the backrest. The other end of the pull rod passes through the locking member. The locking member is used to clamp or loosen the pull rod. When the locking member loosens the pull rod and the backrest rotates relative to the seat, the linkage rod drives the folding plate to rotate.

[0010] Optionally, the seat includes a seat body and a seat plate. The seat plate is rotatably arranged on the seat body. The two armrests are respectively located on both sides of the seat plate. The folding plate and the backrest are respectively rotatably arranged at opposite ends of the seat plate.

[0011] Optionally, there are two linkage rods, two pull rods and two locking members. The two linkage rods are respectively located on both sides of the seat body. The two locking members are respectively arranged in the two armrests. The two pull rods are respectively located on both sides of the backrest.

[0012] Optionally, the seat further includes a baffle cloth. Two ends of the baffle cloth are respectively connected to the rear sides of the two armrests.

[0013] Optionally, a sliding rod is rotatably arranged at one end of the pull rod away from the backrest. The sliding rod passes through the locking member.

[0014] Optionally, the locking member includes a guiding seat and a clamping block. The guiding seat is arranged in the armrest. A guiding hole is formed in the guiding seat so that the sliding rod is slidably arranged in the guiding hole. The clamping block is rotatably arranged on the guiding seat so that the clamping block clamps or loosens the sliding rod.

[0015] Optionally, the sliding rod is a plastic structure.

[0016] Optionally, a plurality of anti-slip convex teeth are arranged on one side surface of the sliding rod close to the clamping block.

[0017] Optionally, a limiting block is only arranged at one end of the sliding rod away from the pull rod. The diameter of the limiting block is larger than the inner diameter of the guiding hole.

[0018] Optionally, the adjustable sofa chair further includes a cushion. The cushion is detachably arranged on one side surface of the backrest close to the seat.

[0019] Compared with the prior art, the utility model has at least the following advantages:

[0020] The adjustable sofa chair of the present application has a pull rod rotatably connected to the backrest, and the pull rod passes through a locking member installed in the armrest, so that the locking member can clamp and fix the pull rod as needed, or release the pull rod. When the pull rod is released, the angle of the backrest relative to the seat can be adjusted; when the pull rod is clamped, the backrest remains fixed relative to the seat. In this way, compared with the existing sofa chairs, the backrest and the folding plate can be adjusted relative to the seat, and the structure is more compact and simple, removing the related parts of the gear-rack cooperation, so that the reliability can be effectively improved and the manufacturing cost can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0022] Figure 1 Structural schematic diagram of the adjustable sofa chair according to an embodiment of the present invention;

[0023] Figure 2 For Figure 1 Structural schematic diagram of another state of the adjustable sofa chair shown;

[0024] Figure 3 For Figure 1 Structural schematic diagram of another angle of the adjustable sofa chair shown;

[0025] Figure 4 For Figure 1 Side view of the adjustable sofa chair shown;

[0026] Figure 5 Structural schematic diagram of the locking member according to an embodiment of the present invention.

[0027] Description of the reference numerals:

[0028] 10. Adjustable sofa chair; 100. Seat; 200. Adjusting assembly; 300. Armrest; 210. Folding plate; 220. Backrest; 230. Link rod; 240. Locking member; 250. Pull rod; 110. Seat body; 120. Seat board; 130. Baffle cloth; 260. Slide rod; 241. Guide seat; 242. Clamping block; 243. Positioning boss; 261. Anti-slip teeth; 262. Limiting block; 400. Cushion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings.

[0030] As Figures 1 to 4 shown, an adjustable sofa chair 10 includes a seat 100 and an adjustment assembly 200. A handrail 300 is provided on each side of the seat 100. The adjustment assembly 200 includes a folding plate 210, a backrest 220, a linkage rod 230, a locking member 240, and a pull rod 250. One end of the folding plate 210 is rotatably provided on the seat 100, and the backrest 220 is rotatably provided at the end of the seat 100 away from the folding plate 210. Both ends of the linkage rod 230 are rotatably connected to the lower end of the folding plate 210 and the lower end of the backrest 220 respectively. The locking member 240 is provided in the handrail 300. One end of the pull rod 250 is rotatably connected to the backrest 220, and the other end of the pull rod 250 passes through the locking member 240. The locking member 240 is used to clamp or release the pull rod 250. When the locking member 240 releases the pull rod 250 and the backrest 220 rotates relative to the seat 100, the linkage rod 230 drives the folding plate 210 to rotate.

[0031] It should be noted that an armrest 300 is provided on two opposite sides of the seat 100. A folding plate 210 is rotatably installed on one of the other two opposite sides of the seat 100, and a backrest 220 is rotatably installed on the other side, so that the backrest 220 and the folding plate 210 are located on the opposite sides of the seat 100. Both ends of the linkage rod 230 are rotatably connected to the lower end of the folding plate 210 and the lower end of the backrest 220 through a pin shaft. In this way, when the backrest 220 rotates relative to the seat 100 to change the included angle, the linkage rod 230 will drive the folding plate 210 to rotate relative to the seat 100. Specifically, the rotation effects of the backrest 220 and the folding plate 210 are as follows: when the included angle between the backrest 220 and the seat 100 is adjusted to become larger, that is, when the backrest 220 changes from a state tending to be vertical to a state tending to be horizontal, the folding plate 210 is pushed by the linkage rod 230 and also changes from a state tending to be vertical to a state tending to be horizontal. In this way, when the user uses it, they can change from a sitting position to a lying position. Further, in order to make the backrest 220 maintain relative stability with the seat 100 after rotating a specified angle relative to the seat 100, a locking member 240 is provided to lock and fix the pull rod 250. Specifically, one end of the pull rod 250 is rotatably connected to the backrest 220 through a pin, and the pull rod 250 passes through the locking member 240 installed in the armrest 300, so that the locking member 240 can clamp and fix the pull rod 250 as needed, or loosen the pull rod 250. When the pull rod 250 is loosened, the angle of the backrest 220 relative to the seat 100 can be adjusted; when the pull rod 250 is clamped, the backrest 220 is fixed relative to the seat 100. In this way, compared with the existing sofa chair, the adjustable sofa chair 10 of the present application realizes the adjustability of the backrest 220 and the folding plate 210 relative to the seat 100, and has a more compact and simple structure, removing the related parts of the gear and rack cooperation, so as to effectively improve the reliability and effectively reduce the manufacturing cost.

[0032] As Figure 2 shown, in one embodiment, the seat 100 includes a seat body 110 and a seat plate 120. The seat plate 120 is rotatably provided on the seat body 110. Two armrests 300 are respectively provided on both sides of the seat plate 120. The folding plate 210 and the backrest 220 are respectively rotatably provided at opposite ends of the seat plate 120.

[0033] It should be noted that the seat board 120 is mounted on the seat body 110 through bearings, enabling the seat board 120 to rotate relative to the seat body 110. The two armrests 300 are respectively mounted on both sides of the seat board 120. In one embodiment, the seat board 120 includes a support frame, a wooden board, and a sponge pad. The wooden board is mounted on the support frame by screws. The support frame is rotatably mounted on the seat body 110 through bearings. The sponge pad covers the support frame and the wooden board. Further, the armrests 300 are fixedly mounted on the opposite sides of the seat board 120 by screws. In one embodiment, the armrest 300 is formed by combining a bracket and a sponge block, wherein the bracket is fixed on the support frame of the seat board 120 by screws. Further, the folding plate 210 and the backrest 220 are rotatably mounted on the support frame of the seat board 120 through pins, enabling the folding plate 210 and the backrest 220 to rotate relative to the seat board 120.

[0034] In one embodiment, there are two linkage rods 230, two pull rods 250, and two locking members 240. The two linkage rods 230 are respectively located on both sides of the seat body 110. The two locking members 240 are respectively disposed within the two armrests 300. The two pull rods 250 are respectively located on both sides of the backrest 220.

[0035] It should be noted that in order to ensure that the backrest 220 has sufficient stability, a pull rod 250 is respectively disposed on both sides of the backrest 220, such that the two pull rods 250 respectively pass through the two locking members 240, and the two locking members 240 respectively fix the two pull rods 250. Further, the two linkage rods 230 are respectively connected to both sides of the folding plate 210 and both sides of the backrest 220.

[0036] As Figure 2 shown, in one embodiment, the seat 100 further includes a baffle cloth 130. Both ends of the baffle cloth 130 are respectively connected to the rear sides of the two armrests 300. In this way, the lower side of the seat 100 is blocked by the baffle cloth 130, making components such as the linkage rod 230 in a hidden state.

[0037] As Figure 4 and Figure 5 shown, in one embodiment, a slide rod 260 is rotatably disposed at one end of the pull rod 250 away from the backrest 220. The slide rod 260 passes through the locking member 240.

[0038] It should be noted that since one end of the pull rod 250 is rotatably connected to the backrest 220, when the backrest 220 rotates and adjusts relative to the seat 100, the angle between the axis of the pull rod 250 and the horizontal plane will change. In order to ensure that the locking member 240 can stably clamp and fix the pull rod 250, a slide rod 260 is mounted on the end of the pull rod 250 through a pin, such that the locking member 240 fixes the pull rod 250 by fixing the slide rod 260.

[0039] AsFigure 4 and Figure 5 As shown in and

[0040] , in one embodiment, the locking member 240 includes a guide seat 241 and a clamping block 242. The guide seat 241 is disposed in the armrest 300. A guide hole is formed in the guide seat 241 to slidably dispose the sliding rod 260 in the guide hole. The clamping block 242 is rotatably disposed on the guide seat 241 to clamp or release the sliding rod 260.

[0040] It should be noted that the guide seat 241 is fixedly installed in the armrest 300. A guide hole is formed in the guide seat 241, enabling the sliding rod 260 to slide in the guide hole. The clamping block 242 is rotatably installed on one side of the guide seat 241 through a pin. When one end of the clamping block 242 is forced to rotate, the other end of the clamping block 242 approaches and presses the sliding rod 260. Thus, the clamping block 242 clamps and fixes the sliding rod 260, that is, clamps and fixes the pull rod 250.

[0041] As Figure 5 shown, in one embodiment, a clamping position boss 243 is provided on the clamping block 242. When the clamping block 242 is used for rotation, the clamping position boss 243 is driven to press the sliding rod 260. Thus, the clamping block 242 can be reliably clamped and fixed with the sliding rod 260.

[0042] In one embodiment, the sliding rod 260 is of a plastic structure. Further, the clamping block 242 is also of a plastic structure. Thus, the clamping block 242 can reliably clamp the sliding rod 260.

[0043] As Figure 5 shown, in one embodiment, a plurality of anti-slip convex teeth 261 are provided on one side surface of the sliding rod 260 close to the clamping block 242.

[0044] It should be noted that by increasing the anti-slip convex teeth 261, the friction force of the clamping block 242 on the sliding rod 260 can be increased, enabling the clamping block 242 to reliably clamp and fix the sliding rod 260.

[0045] As Figure 5 shown, in one embodiment, only a limiting block 262 is provided at one end of the sliding rod 260 away from the pull rod 250. The diameter of the limiting block 262 is greater than the inner diameter of the guide hole.

[0046] Thus, the sliding rod 260 can be prevented from completely sliding out of the guide hole, that is, enabling the sliding rod 260 to have a limit position when sliding in the guide seat 241.

[0047] As Figures 1 to 4As shown, in one embodiment, the adjustable sofa chair 10 further includes a cushion 400, which is detachably disposed on one side of the backrest 220 close to the seat 100. Specifically, the cushion 400 is of a sponge structure. The cushion 400 is placed on the backrest 220, and the height of the cushion 400 is greater than that of the backrest 220, so as to increase the comfort of the user.

[0048] The above embodiments only represent several embodiments of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. An adjustable sofa chair, characterized in that: include: A seat, wherein an armrest is respectively arranged on both sides of the seat; and An adjustment component, the adjustment component includes a folding plate, a backrest, a connecting rod, a locking piece and a pull rod, one end of the folding plate is rotatably set on the seat, the backrest is rotatably set on an end of the seat away from the folding plate, both ends of the connecting rod are rotatably connected to the lower end of the folding plate and the lower end of the backrest respectively, the locking piece is set in the armrest, one end of the pull rod is rotatably connected to the backrest, and the other end of the pull rod is passed through the locking piece, and the locking piece is used to clamp or release the pull rod. When the locking piece releases the pull rod and the backrest rotates relative to the seat, the connecting rod drives the folding plate to rotate.

2. The adjustable sofa chair according to claim 1, characterized in that: The chair seat comprises a seat body and a seat plate, wherein the seat plate is rotatably arranged on the seat body, the two armrests are respectively located on both sides of the seat plate, and the folding plate and the backrest are respectively rotatably arranged on opposite ends of the seat plate.

3. The adjustable sofa chair according to claim 2, characterized in that: The connecting rod, the pulling rod and the locking member are all provided with two, the two connecting rods are respectively located at two sides of the seat body, the two locking members are respectively arranged in the two armrests, and the two pulling rods are respectively located at two sides of the backrest.

4. The adjustable sofa chair according to claim 2, characterized in that: The seat also includes a blocking cloth, and two ends of the blocking cloth are respectively connected to the rear sides of the two armrests.

5. The adjustable sofa chair according to claim 1, characterized in that: A sliding rod is rotatably arranged at one end of the pull rod away from the backrest, and the sliding rod passes through the locking piece.

6. The adjustable sofa chair according to claim 5, characterized in that: The locking member includes a guide seat and a clamping block. The guide seat is arranged in the armrest. A guide hole is opened in the guide seat so that the slide rod can be slidably arranged in the guide hole. The clamping block is rotatably arranged on the guide seat so that the clamping block can clamp or release the slide rod.

7. The adjustable sofa chair according to claim 6, characterized in that: The slide bar is a plastic structure.

8. The adjustable sofa chair according to claim 7, characterized in that: A plurality of anti-slip convex teeth are arranged on one side surface of the slide bar close to the clamping block.

9. The adjustable sofa chair according to claim 8, characterized in that: There is only a limit block on one end of the sliding rod away from the pulling rod, and the diameter of the limit block is larger than the inner diameter of the guide hole.

10. The adjustable sofa chair according to claim 1, characterized in that: The adjustable sofa chair also includes a cushion, which is detachably arranged on a side surface of the backrest close to the seat.

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