Functional chair frame

Abstract

The utility model relates to the technical field of furniture, in particular to a functional chair frame, which comprises a leg support adjusting mechanism, a driving mechanism, a backrest adjusting mechanism, a driving connecting rod, a connecting rod, a connecting rod, a connecting rod and a connecting rod, the quick-release frame comprises at least two groups of supporting legs, a plurality of groups of connecting cross rods are arranged between the supporting legs, the connecting cross rods and the supporting legs are fixed through corner fittings, and the leg support adjusting mechanism, the driving mechanism and the backrest adjusting mechanism are all fixed with the supporting legs through bolts; according to the functional seat frame, the defect that in the prior art, a main body frame is of an integrated structure and is not beneficial to express transportation is overcome.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a functional chair frame. Background Technology

[0002] Chinese patent application number "CN202323555400.2" applies for a sofa frame with delayed backrest adjustment, which realizes that the leg support bracket and backrest bracket can be adjusted sequentially using a single power mechanism, and the overall structure is simpler.

[0003] However, its main frame is a one-piece structure that cannot be disassembled, which is not conducive to express delivery. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of the existing technology where the main frame is an integral structure, which is not conducive to express delivery, and to propose a functional chair frame.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a functional chair frame, including a leg rest adjustment mechanism, a drive mechanism, a backrest adjustment mechanism, and further comprising:

[0007] A drive link, which is used for transmission between the leg support adjustment mechanism and the backrest adjustment mechanism;

[0008] The quick-release frame includes at least two sets of support legs, with multiple sets of connecting crossbars between the support legs. The connecting crossbars are fixed to the support legs by corner brackets. The leg support adjustment mechanism, the drive mechanism, and the backrest adjustment mechanism are all fixed to the support legs by bolts.

[0009] Preferably, the corner piece includes multiple sets of base plates and sleeves, the base plates and sleeves are integrally formed, the base plates are used to connect the support legs, and the sleeves are used to fit the connecting crossbar.

[0010] Preferably, the bottom plate and the sleeve are both provided with a second opening, and the outer walls of the support leg and the connecting crossbar are both provided with a first opening that cooperates with the second opening.

[0011] Preferably, the second opening is connected to the first opening by a fixed insert rod, one end of which is elastically fitted with a spring pin, which is elastically engaged with the inside of the support leg and the connecting crossbar.

[0012] Preferably, the second opening is connected to the first opening by a fixing bolt.

[0013] Preferably, a connecting shaft is rotatably installed inside the base plate, and the connecting shaft is rotatably connected to the leg support adjustment mechanism and the backrest adjustment mechanism.

[0014] Preferably, the two sets of base plates and one set of sleeves together form a triangular structure, and the base plates are connected to the apex of the support legs.

[0015] Preferably, the two sets of base plates and one set of sleeves together form a T-shaped structure, and the base plates are connected to the middle of the support legs.

[0016] Preferably, a reinforcing rod is fixedly installed between the two sets of connecting crossbars located at the front and rear ends by bolts.

[0017] Preferably, a connecting piece is slidably sleeved on the periphery of the connecting crossbar, and the connecting piece is fixedly connected to the support leg by bolts.

[0018] The functional chair frame proposed in this utility model has the following advantages:

[0019] The design incorporates support legs and connecting crossbars, with connecting plates securing the support legs and sleeves fitting onto the connecting crossbars to facilitate assembly and disassembly of the support legs and connecting crossbars for convenient express delivery. Furthermore, the connecting plates are equipped with connecting shafts, allowing them to rotate in conjunction with the backrest adjustment mechanism. To reduce assembly difficulty, this design utilizes a drive linkage to connect the leg support adjustment mechanism and the backrest adjustment mechanism, thereby reducing the number of components. Attached Figure Description

[0020] Figure 1 A schematic diagram of the three-dimensional structure with the main body as the core;

[0021] Figure 2 A three-dimensional structural diagram of the leg support adjustment mechanism;

[0022] Figure 3 This is a three-dimensional structural diagram of the drive mechanism;

[0023] Figure 4 A three-dimensional structural diagram of the backrest adjustment mechanism;

[0024] Figure 5 A schematic diagram of the combined structure of the leg rest adjustment mechanism, drive mechanism, and backrest adjustment mechanism;

[0025] Figure 6 A three-dimensional structural diagram of the quick-release frame;

[0026] Figure 7 Schematic diagram of the three-dimensional structure of the supporting leg Figure 1 ;

[0027] Figure 8 Schematic diagram of the three-dimensional structure of the supporting leg Figure 2 ;

[0028] Figure 9 This is a schematic diagram of the front structure of the corner piece;

[0029] Figure 10 This is a schematic diagram of the back structure of the corner piece.

[0030] In the diagram: 1. Leg support adjustment mechanism; 2. Drive mechanism; 3. Backrest adjustment mechanism; 4. Drive linkage; 5. Support leg; 6. First opening; 7. Corner piece; 8. Fixing bolt; 9. Connecting shaft; 10. Connecting piece; 11. Base plate; 12. Sleeve; 13. Second opening; 14. Fixing rod; 15. Spring pin; 16. Connecting crossbar; 17. Reinforcing rod. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] Example 1

[0033] Reference Figures 1-5 A functional chair frame includes a leg rest adjustment mechanism 1, a drive mechanism 2, a backrest adjustment mechanism 3, and further includes:

[0034] Drive link 4, refer to Figure 5 The drive linkage 4 is used for transmission between the leg support adjustment mechanism 1 and the backrest adjustment mechanism 3;

[0035] Quick-release frame, refer to Figure 6 The quick-release frame includes at least two sets of support legs 5, and multiple sets of connecting crossbars 16 are provided between the support legs 5. The connecting crossbars 16 are fixed to the support legs 5 by corner brackets 7. The leg support adjustment mechanism 1, the drive mechanism 2, and the backrest adjustment mechanism 3 are all fixed to the support legs 5 by bolts.

[0036] Furthermore, refer to Figure 9 , Figure 10 The corner piece 7 includes multiple sets of base plates 11 and sleeves 12. The base plates 11 and sleeves 12 are integrally formed. The base plates 11 are used to connect the support legs 5, and the sleeves 12 are used to fit the connecting crossbars 16.

[0037] Furthermore, refer to Figure 7 , Figure 9 , Figure 10 The bottom plate 11 and the sleeve 12 are both provided with a second opening 13. The outer walls of the support leg 5 and the connecting crossbar 16 are both provided with a first opening 6 that cooperates with the second opening 13. The second opening 13 and the first opening 6 are connected by a fixing bolt 8.

[0038] Furthermore, refer to Figure 8 Inside the base plate 11, a connecting shaft 9 is rotatably installed, which is rotatably connected to the leg support adjustment mechanism 1 and the backrest adjustment mechanism 3.

[0039] Furthermore, refer to Figure 8 The two sets of base plates 11 and the set of sleeves 12 together form a triangular structure, and the base plates 11 are connected to the top corner of the support leg 5.

[0040] Furthermore, refer to Figure 8 Two sets of base plates 11 and a set of sleeves 12 together form a T-shaped structure, and the base plates 11 are connected to the middle of the support legs 5.

[0041] Furthermore, refer to Figure 6 A reinforcing rod 17 is fixedly installed between two sets of connecting crossbars 16 located at the front and rear ends by bolts. A connecting piece 10 is slidably sleeved on the outer periphery of the connecting crossbar 16. The connecting piece 10 is fixedly connected to the support leg 5 by bolts.

[0042] Working principle:

[0043] To reduce the number of components, the support leg 5 received by the user is pre-assembled. The structure of the support leg 5 is referenced. Figure 7 During assembly, the combination of the triangular base plate 11 and the sleeve 12 is placed at the top corner of the support leg 5, and the combination of the T-shaped base plate 11 and the sleeve 12 is placed in the middle of the support leg 5. Then, the second opening 13 in the base plate 11 is connected to the first opening 6 in the support leg 5 by bolts. Then, the two ends of the connecting crossbar 16 are inserted into the two sets of corresponding sleeves 12 respectively, and the connecting crossbar 16 and the sleeve 12 are fixed by bolts.

[0044] To improve lateral strength, refer to Figure 6 A reinforcing rod 17 is also fixedly installed between the two sets of connecting crossbars 16 at the front and rear ends by bolts. This is to fix the spacing between the connecting crossbars 16 and reduce swaying. A connecting piece 10 is also slidably sleeved on the periphery of the connecting crossbar 16. One end of the outer side of the connecting piece 10 is connected to the support leg 5 by bolts. This is to reduce the strength between the connecting crossbar 16 and the support leg 5 and reduce swaying.

[0045] After assembling the support leg 5 and the drive linkage 4, first fix the leg support adjustment mechanism 1 to the support leg 5 with bolts, referring to... Figure 2The leg support adjustment mechanism 1 is divided into left and right sides, and the structures of the left and right sides are exactly the same. The mechanisms on the left and right sides are linked by a connecting rod. When the user receives the leg support adjustment mechanism 1, it is in a disassembled state. Therefore, the user first connects the mechanisms on the left and right sides by the connecting rod, and then fixes the assembled leg support adjustment mechanism 1 to the support leg 5 with bolts. Since the leg support adjustment mechanism 1 is exactly the same as the existing technology, it will not be described in detail.

[0046] Then, the backrest adjustment mechanism 3 is fixedly connected to the support leg 5 with bolts, and the rotating part in the backrest adjustment mechanism 3 is rotatably connected to the connecting shaft 9. Since the backrest adjustment mechanism 3 is exactly the same as the prior art, it will not be described in detail.

[0047] The two ends of the drive mechanism 2 are respectively fixedly connected to the leg support adjustment mechanism 1 and a set of connecting crossbars 16 by bolts. Since the backrest adjustment mechanism 3 is exactly the same as the existing technology, it will not be described in detail.

[0048] Finally, the leg support adjustment mechanism 1 and the backrest adjustment mechanism 3 are connected by a drive linkage 4. Unlike the prior art, in order to reduce the difficulty of assembly, the drive linkage 4 in this case is a long strip structure.

[0049] Example 2

[0050] As described in Embodiment 1, the support leg 5 and the connecting crossbar 16 are assembled and disassembled using corner fittings 7, separating the originally integrated components for easier express delivery. However, during assembly, the excessive number of bolts still increases the complexity of the assembly process. Therefore, referring to... Figure 9 , Figure 10 The second opening 13 is connected to the first opening 6 through a fixed insert rod 14. One end of the fixed insert rod 14 is elastically fitted with a spring pin 15, which is elastically engaged with the inside of the support leg 5 and the connecting crossbar 16.

[0051] Working principle:

[0052] By replacing the bolts with the fixing rod 14, tools are no longer needed during assembly. Simply insert the fixing rod 14 into the first opening 6 and the second opening 13 with force, and make the spring pin 15 abut against the first opening 6 to complete the installation. Users can assemble it themselves without the need for external tools. The outer wall of the fixing rod 14 is smooth and can act as a rotating shaft, while avoiding the problem of difficult disassembly and assembly due to thread failure.

[0053] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A functional chair frame, comprising a leg rest adjustment mechanism (1), a drive mechanism (2), and a backrest adjustment mechanism (3), characterized in that: Also includes: Drive link (4), the drive link (4) is used for transmission between the leg support adjustment mechanism (1) and the backrest adjustment mechanism (3); The quick-release frame includes at least two sets of support legs (5), and multiple sets of connecting crossbars (16) are provided between the support legs (5). The connecting crossbars (16) are fixed to the support legs (5) by corner brackets (7). The leg support adjustment mechanism (1), the drive mechanism (2), and the backrest adjustment mechanism (3) are all fixed to the support legs (5) by bolts. The corner piece (7) includes multiple sets of base plates (11) and sleeves (12). The base plates (11) and sleeves (12) are integrally formed. The base plates (11) are used to connect the support legs (5), and the sleeves (12) are used to fit the connecting crossbars (16). A connecting piece (10) is slidably sleeved on the periphery of the connecting crossbar (16), and the connecting piece (10) is fixedly connected to the support leg (5) by bolts.

2. The functional chair frame according to claim 1, characterized in that: The bottom plate (11) and the sleeve (12) are both provided with a second opening (13) through the interior, and the outer walls of the support leg (5) and the connecting crossbar (16) are both provided with a first opening (6) that cooperates with the second opening (13).

3. A functional chair frame according to claim 2, characterized in that: The second opening (13) is connected to the first opening (6) through a fixed insert (14). One end of the fixed insert (14) is elastically fitted with a spring pin (15), which is elastically engaged with the inside of the support leg (5) and the connecting crossbar (16).

4. A functional chair frame according to claim 2, characterized in that: The second opening (13) is connected to the first opening (6) by a fixing bolt (8).

5. A functional chair frame according to claim 1, characterized in that: The base plate (11) is also rotatably mounted with a connecting shaft (9), which is rotatably connected to the leg support adjustment mechanism (1) and the backrest adjustment mechanism (3).

6. A functional chair frame according to claim 1, characterized in that: The two sets of base plates (11) and the set of sleeves (12) together form a triangular structure, and the base plates (11) are connected to the top corner of the support leg (5).

7. A functional chair frame according to claim 1, characterized in that: The two sets of base plates (11) and the set of sleeves (12) together form a T-shaped structure, and the base plates (11) are connected to the middle of the support legs (5).

8. A functional chair frame according to claim 1, characterized in that: A reinforcing rod (17) is fixedly installed between the two sets of connecting crossbars (16) located at the front and rear ends by bolts.

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