Splicing type backrest frame structure metal chair
The hydraulically driven support plate and support rod structure, combined with springs and limiting components, achieves precise support for the lumbar cushion, solving the problem of uneven support force. The easily detachable support column structure reduces the difficulty of moving the chair and lowers transportation costs.
Patent Information
- Application Number
- CN202520208436.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-02-11
AI Technical Summary
Traditional metal chairs with spliced backrest frames have uneven lumbar support, making it difficult to accurately conform to the physiological curve of the waist, leading to discomfort symptoms such as lower back pain. In addition, the chairs are large in size and irregular in shape, making them difficult to move.
The support plate and support rod structure driven by hydraulic cylinders, combined with springs and limiting components, enables precise telescopic adjustment of the lumbar support; the T-shaped and L-shaped rod structures facilitate the disassembly and transportation of the support column.
It achieves precise lumbar support, relieves back pain, and reduces the difficulty and cost of moving the chair.
Smart Images
Figure CN223601121U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of seats, especially to a spliced back frame structure metal chair. BACKGROUND
[0002] The spliced back frame structure metal chair is a chair made of metal as the main material, and its remarkable feature is that the backrest adopts a spliced frame structure, that is, the backrest is composed of multiple components combined by welding, riveting or screw fixing.
[0003] The conventional back frame structure metal chair has chair legs distributed to support the ground to bear the weight, cross bracing reinforcement, and a back frame composed of horizontal and vertical metal rods, wherein the vertical rods bear the back pressure, but it is difficult to accurately adjust to the position completely fitted to the physiological curve of the waist, resulting in uneven support of the waist pad. SUMMARY
[0004] To make up for the above shortcomings, the utility model provides a spliced back frame structure metal chair, aiming at improving the back frame structure metal chair, which can cause uneven support of the waist pad.
[0005] To achieve the above purpose, the utility model provides the following technical scheme:
[0006] The spliced back frame structure metal chair comprises a backrest, a hydraulic cylinder fixedly connected to the inside of the backrest, a first support plate fixedly connected to the output end of the hydraulic cylinder, a first support rod rotatably connected to the outer wall of the hydraulic cylinder, a second support rod rotatably connected to the outer wall of the first support rod, the middle outer wall of the second support rod rotatably connected to the inside of the first support plate, a baffle rotatably connected to the outer wall of the second support rod, a first spring provided on the outer wall of the baffle, a waist pad provided on the outer wall of the first spring, and a limiting assembly provided on the outer wall of the baffle, which is used to limit the extension and contraction of the waist pad.
[0007] Preferably, the limiting assembly comprises a connecting rod fixedly connected to the outer wall of the baffle, the outer wall of the connecting rod slidably connected to the inside of the first support plate, and a limiting block fixedly connected to the outer wall of the connecting rod.
[0008] Preferably, the outer wall of the baffle is slidably connected to the inside of the backrest, and the outer wall of the waist pad is slidably connected to the inside of the backrest.
[0009] Preferably, a sliding groove is formed in the inside of the first support plate, and the outer wall of the connecting rod is slidably connected to the inside of the first support plate through the sliding groove.
[0010] Preferably, the outer wall of the chair back is provided with a second support plate, the inner part of the second support plate is rotationally connected with a screw, the outer wall of the screw is rotationally connected in the inner part of the chair back, the outer wall of the second support plate is fixedly connected with a cushion, and the outer wall of the cushion is fixedly connected with a handle.
[0011] Preferably, the lower surface of the cushion is fixedly connected with a third support plate, the lower surface of the third support plate is fixedly connected with a first L-shaped rod, the inner bottom wall of the first L-shaped rod is slidingly connected with a second L-shaped rod, the outer wall of the first L-shaped rod is slidingly connected with an outer shell, the outer wall of the first L-shaped rod is slidingly connected with a first support column, and the lower surface of the second L-shaped rod is provided with a pushing assembly.
[0012] Preferably, the pushing assembly comprises a T-shaped rod, the upper surface of the T-shaped rod is fixedly connected to the lower surface of the second L-shaped rod, the outer wall of the T-shaped rod is slidingly connected to the inner part of the outer shell, the outer wall of the second L-shaped rod is provided with a second spring, and the outer wall of the second spring is arranged in the inner part of the outer shell.
[0013] Preferably, the outer wall of the outer shell is fixedly connected in the inner part of the support column, and the upper surface of the support column is arranged on the third support plate.
[0014] The utility model has the advantages of the following:
[0015] 1. In the utility model, the first support plate is driven to slide through the hydraulic cylinder, then the second support rod rotates with the sliding of the first support plate, the first support rod rotates under the drive of the second support rod, the first support rod rotates in the inner part of the hydraulic cylinder, and finally the purpose of stretching and contracting the waist pad is realized, the waist pad can be accurately attached to the waist position, the uneven supporting force of the waist pad is solved, and the discomfort symptoms such as waist sore and back pain are alleviated.
[0016] 2. In the utility model, the second L-shaped rod slides through pressing the T-shaped rod, then the second spring is compressed under the drive of the second L-shaped rod, the second spring is compressed in the inner part of the outer shell, and finally the purpose of controlling the disassembly of the support column is realized, the support column is convenient to carry, the difficulty in carrying the chair due to the large overall size and irregular shape of the chair is avoided, and the transportation cost and difficulty are reduced. ACCURACY OF DRAWINGS
[0017] Figure 1 It is a three-dimensional structure schematic view of the spliced back frame structure metal chair;
[0018] Figure 2 It is a chair back partial structure schematic view of the spliced back frame structure metal chair;
[0019] Figure 3The second supporting rod partial structure schematic view of the spliced back frame structure metal chair is provided by the utility model.
[0020] Figure 4 The first supporting plate partial structure schematic view of the spliced back frame structure metal chair is provided by the utility model.
[0021] Figure 5 The supporting column partial structure schematic view of the spliced back frame structure metal chair is provided by the utility model.
[0022] Legend:
[0023] 1, chair back; 2, hydraulic cylinder; 3, first supporting plate; 4, first supporting rod; 5, second supporting rod; 6, baffle; 7, first spring; 8, waist pad; 9, connecting rod; 10, sliding groove; 11, limiting block; 12, second supporting plate; 13, screw; 14, cushion; 15, handle; 16, third supporting plate; 17, first L-shaped rod; 18, second L-shaped rod; 19, T-shaped rod; 20, shell; 21, second spring; 22, supporting column. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the specification of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0025] Reference Figures 1-3 An embodiment provided by the utility model: a spliced back frame structure metal chair, comprising a chair back 1, the inside of the chair back 1 is fixedly connected with a hydraulic cylinder 2, the output end of the hydraulic cylinder 2 is fixedly connected with a first supporting plate 3, the outer wall of the hydraulic cylinder 2 is rotatably connected with a first supporting rod 4, the outer wall of the first supporting rod 4 is rotatably connected with a second supporting rod 5, the middle outer wall of the second supporting rod 5 is rotatably connected in the inside of the first supporting plate 3, the outer wall of the second supporting rod 5 is rotatably connected with a baffle 6, the outer wall of the baffle 6 is provided with a first spring 7, the outer wall of the first spring 7 is provided with a waist pad 8, the outer wall of the baffle 6 is provided with a limiting assembly, the limiting assembly is used for limiting the expansion and contraction of the waist pad 8, the limiting assembly comprises a connecting rod 9, the outer wall of the connecting rod 9 is fixedly connected to the outer wall of the baffle 6, the outer wall of the connecting rod 9 is slidably connected in the inside of the first supporting plate 3, the outer wall of the connecting rod 9 is fixedly connected with a limiting block 11, the outer wall of the baffle 6 is slidably connected in the inside of the chair back 1, the outer wall of the waist pad 8 is slidably connected in the inside of the chair back 1, the inside of the first supporting plate 3 is provided with a sliding groove 10, the outer wall of the connecting rod 9 is slidably connected in the inside of the first supporting plate 3 through the sliding groove 10;
[0026] Specifically, the output end of the hydraulic cylinder 2 is used to drive the first support plate 3 to slide, the first support plate 3 can drive the inner part of the second support rod 5 to rotate on the outer wall of the first support rod 4 when sliding, the inner part of the second support rod 5 can drive the outer wall of the first support rod 4 to rotate in the inner part of the hydraulic cylinder 2 when rotating, the outer wall of the second support rod 5 can drive the outer wall of the first spring 7 to compress when rotating, the outer wall of the baffle 6 can drive the outer wall of the first spring 7 to compress on the outer wall of the waist cushion 8 when sliding, the baffle 6 can drive the outer wall of the connecting rod 9 to slide in the inner part of the first support plate 3 when sliding, and the outer wall of the connecting rod 9 can drive the outer wall of the limiting block 11 to be fixed when sliding in the inner part of the first support plate 3, so that the waist cushion 8 can be stretched and contracted, and the waist cushion 8 can be accurately attached to the waist position to relieve discomfort such as waist soreness and back pain.
[0027] Referring to Figures 3-5 , the outer wall of the chair back 1 is provided with a second support plate 12, the inner part of the second support plate 12 is rotationally connected with a screw 13, the outer wall of the screw 13 is rotationally connected in the inner part of the chair back 1, the outer wall of the second support plate 12 is fixedly connected with a cushion 14, and the outer wall of the cushion 14 is fixedly connected with a handle 15.
[0028] Specifically, the inner part of the second support plate 12 can drive the outer wall of the second support plate 12 to be fixed on the outer wall of the chair back 1 when rotating on the outer wall of the screw 13, so that the chair back 1 can be replaced.
[0029] Referring to Figure 5 , the lower surface of the cushion 14 is fixedly connected with a third support plate 16, the lower surface of the third support plate 16 is fixedly connected with a first L-shaped rod 17, the inner bottom wall of the first L-shaped rod 17 is slidingly connected with a second L-shaped rod 18, the outer wall of the first L-shaped rod 17 is slidingly connected with an outer shell 20, the outer wall of the first L-shaped rod 17 is slidingly connected with a first support column 22, the lower surface of the second L-shaped rod 18 is provided with a pushing assembly, the pushing assembly comprises a T-shaped rod 19, the upper surface of the T-shaped rod 19 is fixedly connected to the lower surface of the second L-shaped rod 18, the outer wall of the T-shaped rod 19 is slidingly connected in the inner part of the outer shell 20, the outer wall of the second L-shaped rod 18 is provided with a second spring 21, the outer wall of the second spring 21 is provided in the inner part of the outer shell 20, the outer wall of the outer shell 20 is fixedly connected in the inner part of the support column 22, and the upper surface of the support column 22 is provided on the third support plate 16.
[0030] Specific, press T-shaped rod 19 sliding can achieve the second L-shaped rod 18 inner top wall in the first L-shaped rod 17 inner bottom wall sliding effect, the second L-shaped rod 18 inner top wall in the first L-shaped rod 17 inner bottom wall sliding can achieve the second L-shaped rod 18 outer wall in the second spring 21 outer wall compression effect, the second spring 21 outer wall in the shell 20 inside compression effect, thereby can realize the effect of supporting column 22 disassembly, make it convenient to carry, reduce the transportation cost and difficulty.
[0031] Working principle: when the device needs to be used, the output end of the hydraulic cylinder 2 drives the first support plate 3 to slide, the outer wall of the first support rod 4 is driven to rotate by the inside of the hydraulic cylinder 2, which makes the outer wall of the first support rod 4 rotate in the inside of the second support rod 5, the outer wall of the second support rod 5 is rotated in the inside of the baffle 6, which makes the outer wall of the first spring 7 compressed in the outer wall of the waist cushion 8, the outer wall of the baffle 6 drives the outer wall of the connecting rod 9 to be fixed, which makes the outer wall of the connecting rod 9 slide in the inside of the first support plate 3, the outer wall of the connecting rod 9 is fixed in the outer wall of the limiting block 11, finally realizes the effect of the waist cushion 8 stretching and contracting, the outer wall of the T-shaped rod 19 is pressed to slide in the inside of the shell 20, which makes the outer wall of the T-shaped rod 19 drive the lower surface of the second L-shaped rod 18 to slide, the inner top wall of the second L-shaped rod 18 slides in the inner bottom wall of the first L-shaped rod 17, which makes the outer wall of the second L-shaped rod 18 compressed in the outer wall of the second spring 21, the outer wall of the second spring 21 is compressed in the inside of the shell 20, finally realizes the effect of disassembling the supporting column 22, so as to not only achieve the effect that the waist cushion 8 can be accurately fitted on the waist position, solve the uneven supporting force of the waist cushion 8, relieve the discomfort symptoms such as waist and back pain, but also achieve the effect that it is convenient to carry, avoid the difficulty of carrying due to the large overall size and irregular shape of the chair, reduce the transportation cost and difficulty.
[0032] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.
Claims
1. A metal chair with a frame structure of the backrest assembled from parts, comprising a backrest (1), characterised in that: The inside of the chair back (1) is fixedly connected with a hydraulic cylinder (2), the output end of the hydraulic cylinder (2) is fixedly connected with a first support plate (3), the outer wall of the hydraulic cylinder (2) is rotatably connected with a first support rod (4), the outer wall of the first support rod (4) is rotatably connected with a second support rod (5), the middle outer wall of the second support rod (5) is rotatably connected in the inside of the first support plate (3), the outer wall of the second support rod (5) is rotatably connected with a baffle (6), the outer wall of the baffle (6) is provided with a first spring (7), the outer wall of the first spring (7) is provided with a waist pad (8), the outer wall of the baffle (6) is provided with a limiting assembly, and the limiting assembly is used to limit the expansion and contraction of the waist pad (8).
2. The sectional back frame structure metal chair according to claim 1, characterized in that: The limiting assembly comprises a connecting rod (9), the outer wall of the connecting rod (9) is fixedly connected to the outer wall of the baffle (6), and the outer wall of the connecting rod (9) is slidably connected in the inside of the first support plate (3).
3. The sectional back frame structure metal chair according to claim 1, characterized in that: The outer wall of the baffle (6) is slidably connected in the inside of the chair back (1), and the outer wall of the waist pad (8) is slidably connected in the inside of the chair back (1).
4. The sectional back frame structure metal chair according to claim 2, characterized in that: The inside of the first support plate (3) is provided with a sliding groove (10), and the outer wall of the connecting rod (9) is slidably connected in the inside of the first support plate (3) through the sliding groove (10).
5. The sectional back frame structure metal chair according to claim 1, characterized in that: The outer wall of the chair back (1) is provided with a second support plate (12), the inside of the second support plate (12) is rotatably connected with a screw (13), the outer wall of the screw (13) is rotatably connected in the inside of the chair back (1), the outer wall of the second support plate (12) is fixedly connected with a seat cushion (14), and the outer wall of the seat cushion (14) is fixedly connected with a handle (15).
6. The sectional back frame structure metal chair according to claim 5, characterized in that: The lower surface of the seat cushion (14) is fixedly connected with a third support plate (16), the lower surface of the third support plate (16) is fixedly connected with a first L-shaped rod (17), the inner bottom wall of the first L-shaped rod (17) is slidably connected with a second L-shaped rod (18), the outer wall of the first L-shaped rod (17) is slidably connected with an outer shell (20), the outer wall of the first L-shaped rod (17) is slidably connected with a first support column (22), and the lower surface of the second L-shaped rod (18) is provided with a pushing assembly.
7. The sectional back frame structure metal chair according to claim 6, characterized in that: The pushing assembly comprises a T-shaped rod (19), the upper surface of the T-shaped rod (19) is fixedly connected to the lower surface of the second L-shaped rod (18), the outer wall of the T-shaped rod (19) is slidably connected in the inside of the outer shell (20), the outer wall of the second L-shaped rod (18) is provided with a second spring (21), and the outer wall of the second spring (21) is arranged in the inside of the outer shell (20).
8. The sectional back frame structure metal chair according to claim 7, characterized in that: The outer wall of the outer shell (20) is fixedly connected in the inside of the support column (22), and the upper surface of the support column (22) is arranged on the third support plate (16).