Angle adjusting device for furniture and furniture with angle adjusting device for furniture
By using the hinged design of the base frame and connecting rods to form an internal four-bar linkage structure, combined with springs and telescopic actuators, the problems of unsmooth furniture angle adjustment and poor stability are solved, achieving stable and smooth angle adjustment in confined spaces.
Patent Information
- Application Number
- CN202422858225.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-21
AI Technical Summary
Existing furniture angle adjustment mechanisms have drawbacks such as unsmooth back-to-back angle adjustment, poor stability, and inability to adapt to confined spaces.
The design employs a hinged structure consisting of a base frame, a first connecting rod, a second connecting rod, a first intermediate connecting rod, a third connecting rod, and a second intermediate connecting rod, forming an inner four-bar linkage structure and an outer four-bar linkage structure. The pivoting of the first connecting rod is controlled by the third connecting rod and the second intermediate connecting rod, and the angle is adjusted smoothly and stably by combining springs and telescopic actuators.
It achieves stable and smooth adjustment of the backrest angle and can adapt to environments with limited space, improving the stability and applicability of furniture angle adjustment devices.
Smart Images
Figure CN223585509U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of furniture, and especially a kind of angle adjusting device for furniture and furniture with the angle adjusting device for furniture. BACKGROUND
[0002] With the continuous development of economy and the continuous progress of society, people's life provides more and more rich material consumer goods, and furniture is one of many material consumer goods.
[0003] Among them, for furniture, it contains bed, sofa, etc. Whether it is bed or sofa, it has backrest part. In order to make the user obtain better comfortable posture, angle adjusting mechanism for adjusting the angle of backrest is provided on the bed or sofa, so as to adjust the angle of backrest through angle adjusting mechanism, thereby flexibly adjusting the angle (or slope) of backrest on the bed or sofa, so as to make the backrest provide more comfortable support state for the user.
[0004] However, in the existing angle adjusting mechanism, there are defects that the backrest angle adjustment is not smooth, the stability is poor and cannot adapt to limited space.
[0005] Therefore, there is an urgent need for an angle adjusting device for furniture and furniture with the angle adjusting device for furniture to overcome the above defects. SUMMARY
[0006] One purpose of the utility model is to provide an angle adjusting device for furniture which is stable and smooth in angle adjustment and suitable for limited space.
[0007] Another purpose of the utility model is to provide furniture which is stable and smooth in angle adjustment and suitable for limited space.
[0008] In order to realize the above-mentioned purpose, the furniture angle adjusting device comprises a base frame, a first connecting frame rod, a second connecting frame rod, a first intermediate connecting rod, a third connecting frame rod and a second intermediate connecting rod. The base frame is provided with a first hinge position and a second hinge position which are spaced apart from each other, the first hinge position is hingedly connected with the first end of the first connecting frame rod, the second hinge position is hingedly connected with the first end of the second connecting frame rod, the second end of the first connecting frame rod is provided with a third hinge position, the second end of the second connecting frame rod is provided with a fourth hinge position, the first intermediate connecting rod is hingedly connected with the third hinge position and the fourth hinge position respectively, and the first intermediate connecting rod can be adjusted in angle relative to the base frame under the cooperation of the first connecting frame rod and the second connecting frame rod. Wherein, the base frame is further provided with a fifth hinge position between the first hinge position and the second hinge position, the first connecting frame rod is provided with a sixth hinge position between the first hinge position and the third hinge position, the sixth hinge position is hingedly connected with one end of the second intermediate connecting rod, the other end of the second intermediate connecting rod is hingedly connected with the first end of the third connecting frame rod, and the second end of the third connecting frame rod is hingedly connected with the fifth hinge position.
[0009] Compared with the prior art, by means of the design that the base frame is further provided with a fifth hinge position between the first hinge position and the second hinge position, the first connecting frame rod is provided with a sixth hinge position between the first hinge position and the third hinge position, the sixth hinge position is hingedly connected with one end of the second intermediate connecting rod, the other end of the second intermediate connecting rod is hingedly connected with the first end of the third connecting frame rod, and the second end of the third connecting frame rod is hingedly connected with the fifth hinge position, the third connecting frame rod, the second intermediate connecting rod, the base frame and the first connecting frame rod together enclose an inner four-bar linkage structure, the inner four-bar linkage structure is surrounded by an outer four-bar linkage structure which is enclosed by the base frame, the first connecting frame rod, the second connecting frame rod and the first intermediate connecting rod, and the inner four-bar linkage structure and the outer four-bar linkage structure share the base frame and the first connecting frame rod, so that the pivoting of the first connecting frame rod relative to the base frame is controlled by the third connecting frame rod and the second intermediate connecting rod, and thus the angle adjustment of the first intermediate connecting rod under the cooperation of the first connecting frame rod and the second connecting frame rod is more stable and smooth. In addition, the first fixed rod requires smaller movement space when being fixedly connected with the third connecting frame rod, so it can be adapted to occasions with limited space.
[0010] Preferably, the second end of the third connecting frame rod is provided with an assembly structure which is arranged opposite to the first end of the third connecting frame rod with the fifth hinge position as the center; and the assembly structure is a bending structure which is bent out from the end of the second end of the third connecting frame rod in a direction away from the base frame.
[0011] Preferably, the first intermediate connecting rod is angularly adjustable between an initial position and a terminal position; when the first intermediate connecting rod is switched to the initial position, the first and second connecting rods are folded in the base frame; when the first intermediate connecting rod is switched to the terminal position, the first and second connecting rods are unfolded from the base frame.
[0012] Preferably, the base frame is provided with a limiting structure for limiting one of the first, second and third connecting rods when the first intermediate connecting rod is switched to the terminal position.
[0013] Preferably, the distance between the first and third hinge positions is D1, the distance between the first and second hinge positions is D2, the distance between the third and fourth hinge positions is D3, and the distance between the second and fourth hinge positions is D4; wherein D1>D2>D3>D4.
[0014] Preferably, the furniture angle adjusting device further comprises a spring, the second connecting rod is provided with a first mounting structure between the second and fourth hinge positions for mounting one end of the spring, and the first intermediate connecting rod is provided with a second mounting structure for mounting the other end of the spring.
[0015] Preferably, the first intermediate connecting rod is hingedly connected to the second end of the second connecting rod by means of a ratchet mechanism, and the fourth hinge position is in the ratchet mechanism.
[0016] Preferably, the base frame, the first, second and third connecting rods, and the second intermediate connecting rod are arranged in a left-right spaced manner, and a first fixing rod is fixed between the left and right assembly structures.
[0017] Preferably, the furniture angle adjusting device further comprises a telescopic drive, the telescopic drive comprises a drive body and a sliding body reciprocally sliding on the drive body, a second fixing rod is fixed between the left and right base frames, one of the drive body and the sliding body is hingedly connected to the first fixing rod, and the other of the drive body and the sliding body is hingedly connected to the second fixing rod.
[0018] To achieve the above-mentioned purpose, the furniture comprises a furniture body, a backrest and the aforementioned furniture angle adjusting device. The base frame is assembled to the furniture body, and the backrest is assembled to the first intermediate connecting rod. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1It is a plan view of the furniture with the angle adjusting device for furniture of the utility model, and the view also shows that the backrest is in the initial position and the terminal position.
[0020] Figure 2 It is a perspective view of the angle adjusting device for furniture of the first embodiment of the utility model when the first intermediate connecting rod is in the initial position.
[0021] Figure 3 It is Figure 2 a plan view of the angle adjusting device for furniture viewed from right to left.
[0022] Figure 4 It is a perspective view of the angle adjusting device for furniture of the first embodiment of the utility model when the first intermediate connecting rod is in the terminal position.
[0023] Figure 5 It is Figure 4 a plan view of the angle adjusting device for furniture viewed from right to left.
[0024] Figure 6 It is Figure 4 a perspective view of the angle adjusting device for furniture after the first fixed rod is hidden.
[0025] Figure 7 It is a perspective view of the angle adjusting device for furniture of the second embodiment of the utility model when the first intermediate connecting rod is in the initial position.
[0026] Figure 8 It is a perspective view of the angle adjusting device for furniture of the second embodiment of the utility model when the first intermediate connecting rod is in the initial position. DETAILED DESCRIPTION
[0027] The preferred embodiments of the utility model are described below in combination with the accompanying drawings of the specification.
[0028] Please refer to Figure 1 , the furniture 1000 comprises the angle adjusting device for furniture 100 (100'), the furniture body 200 and the backrest 300. The base frame 10 described below is assembled on the furniture body 200, and the furniture body 200 provides the place for the assembly and the supporting role of the base frame 10; alternatively, in the embodiment, the base frame 10 is arranged to extend up and down on the furniture body 200 to meet the need that the angle adjusting device for furniture 100 (100') described below is assembled on the first intermediate connecting rod 40 to arrange the backrest 300 to extend up and down, thereby facilitating the operation that the backrest 300 follows the first intermediate connecting rod 40 to adjust the angle relative to the furniture body 200. Since the structure of the furniture body 200 and the backrest 300 is well known in the art, it is not described here. Figure 1
[0029] Recombination Figures 2 to 5 As an example, the furniture angle adjustment device 100 of the first embodiment comprises a base frame 10, a first connecting rod 20, a second connecting rod 30, a first intermediate connecting rod 40, a third connecting rod 50, and a second intermediate connecting rod 60. Optionally, the furniture angle adjustment device 100 of the first embodiment can further comprise a first fixed rod 91. Figure 2 In addition, the first fixed rod 91 can be fixed between the assembly structures 521 on the left and right sides of the backrest 300. Figure 4 As an example, the base frame 10, the first connecting rod 20, the second connecting rod 30, the third connecting rod 50, and the second intermediate connecting rod 60 are arranged separately on the left and right sides, and a first fixed rod 91 is fixed between the assembly structures 521 on the left and right sides. This design allows the left and right sides of the backrest 300 to be supported by the furniture angle adjustment device 100 of the first embodiment on the same side, which more effectively ensures the stability and smoothness of the angle adjustment of the backrest 300. In addition, the first fixed rod 91 ensures the synchronization and coordination of the movement of the furniture angle adjustment device 100 of the first embodiment on the left and right sides. Furthermore, since the first fixed rod 91 is fixed between the assembly structures 521 on the left and right sides, the force acting on the first fixed rod 91 is torsional, effectively preventing the first fixed rod 91 from bending and deforming after long-term use. It should be noted that the backrest 300 can also be designed to be supported by the furniture angle adjustment device 100 of the first embodiment on one side, and the left and right sides of the backrest 300 can be supported by the furniture angle adjustment device 100 of the first embodiment on the same side. Therefore, the design shown in Figure 2 In addition, the first fixed rod 91 can be fixed between the assembly structures 521 on the left and right sides of the backrest 300. Figure 4 As an example, the base frame 10, the first connecting rod 20, the second connecting rod 30, the third connecting rod 50, and the second intermediate connecting rod 60 are arranged separately on the left and right sides, and a first fixed rod 91 is fixed between the assembly structures 521 on the left and right sides. This design allows the left and right sides of the backrest 300 to be supported by the furniture angle adjustment device 100 of the first embodiment on the same side, which more effectively ensures the stability and smoothness of the angle adjustment of the backrest 300. In addition, the first fixed rod 91 ensures the synchronization and coordination of the movement of the furniture angle adjustment device 100 of the first embodiment on the left and right sides. Furthermore, since the first fixed rod 91 is fixed between the assembly structures 521 on the left and right sides, the force acting on the first fixed rod 91 is torsional, effectively preventing the first fixed rod 91 from bending and deforming after long-term use. It should be noted that the backrest 300 can also be designed to be supported by the furniture angle adjustment device 100 of the first embodiment on one side, and the left and right sides of the backrest 300 can be supported by the furniture angle adjustment device 100 of the first embodiment on the same side. Therefore, the design shown in
[0030] Meanwhile, the base frame 10 is provided with a first hinge position 11 and a second hinge position 12 that are spaced apart from each other, and a fifth hinge position 13 located between the first hinge position 11 and the second hinge position 12. The first hinge position 11 is hinged to the first end 21 of the first connecting rod 20 to meet the need for the first connecting rod 20 to pivot relative to the base frame 10, and the second end 22 of the first connecting rod 20 is provided with a third hinge position 221. The second hinge position 12 is hinged to the first end 31 of the second connecting rod 30 to meet the need for the second connecting rod 30 to pivot relative to the base frame 10, and the second end 32 of the second connecting rod 30 is provided with a fourth hinge position 321. The first intermediate connecting rod 40 is hinged to the third hinge position 221 and the fourth hinge position 321, respectively, to meet the need for the first intermediate connecting rod 40 to be angle-adjustable relative to the base frame 10 under the cooperation of the first connecting rod 20 and the second connecting rod 30.
[0031] Furthermore, the first connecting rod 20 is provided with a sixth hinge position 23 located between the first hinge position 11 and the third hinge position 221, and the sixth hinge position 23 is hinged to one end of the second intermediate connecting rod 60. The other end of the second intermediate connecting rod 60 is hinged to the first end 51 of the third connecting rod 50, and the second end 52 of the third connecting rod 50 is hinged to the fifth hinge position 13, as shown in Figure 6 Figure 5 In an embodiment, as an example, the distance between the first hinge position 11 and the third hinge position 221 is D1, the distance between the first hinge position 11 and the second hinge position 12 is D2, the distance between the third hinge position 221 and the fourth hinge position 321 is D3, and the distance between the second hinge position 12 and the fourth hinge position 321 is D4, where D1>D2>D3>D4; this design makes the first connecting rod 20 a long rod relative to the second connecting rod 30, and correspondingly, the second connecting rod 30 a short rod relative to the first connecting rod 20, so that the pivoting angle of the first connecting rod 20 relative to the base frame 10 is smaller than the pivoting angle of the second connecting rod 30 relative to the base frame 10. More specifically, as follows:
[0032] As shown in Figure 5 and Figure 6 , as an example, the second end 52 of the third connecting rod 50 is provided with a fitting structure 521, which is arranged opposite to the first end 51 of the third connecting rod 50 with the fifth hinge position 13 as the center, for example but not limited to Figure 5 and Figure 6 , arranged opposite to each other; this design makes the space occupied by the first fixed rod 91 fixedly connected to the fitting structure 521 smaller during movement, and also ensures that the force acting on the first fixed rod 91 is a torsional force, thereby ensuring that the first fixed rod 91 does not bend and deform after long-term use. Specifically, in Figure 6 , as an example, the fitting structure 521 is a bent structure at the end of the second end 52 of the third connecting rod 50 bent away from the base frame 10, to simplify the manufacturing process of the fitting structure 521; obviously, according to actual needs, the fitting structure 521 and the third connecting rod 50 can also be made into separate structures and then fixed together by assembly, so it is not limited to Figure 6 .
[0033] As shown in Figures 2 to 5 , as an example, the first intermediate connecting rod 40 can be adjusted in angle between an initial position (see Figure 2 and Figure 3 ) and a terminal position (see Figure 4 and Figure 5 ); when the first intermediate connecting rod 40 switches to the initial position, the first connecting rod 20 and the second connecting rod 30 are folded in the base frame 10, as shown in Figure 3 ; when the first intermediate connecting rod 40 switches to the terminal position, the first connecting rod 20 and the second connecting rod 30 are unfolded from the base frame 10, as shown in Figure 5 ; thus, the backrest 300 follows the first intermediate connecting rod 40 to adjust the angle within a predetermined range. In addition, in Figure 4In the embodiment, as an example, the base frame 10 is provided with a limiting structure 14 which is in abutment with the second connecting frame 30 when the first intermediate connecting rod 40 is switched to the terminal position, so as to prevent the first intermediate connecting rod 40 from being adjusted to an excessive angle relative to the base frame 10. Obviously, according to actual needs, the limiting structure 14 can also be in abutment with the first connecting frame 20 or the third connecting frame 50 when the first intermediate connecting rod 40 is switched to the terminal position, and therefore the embodiment is not limited to the abutment with the second connecting frame 30. Figure 4 As an example, the limiting structure 14 is a convex column structure, but the embodiment is not limited thereto. It can be understood that when the limiting structure 14 is used to abut against the second connecting frame 40, the limiting structure 14 is correspondingly arranged at a position adjacent to the second hinge position 12.
[0034] As shown in Figure 2 and Figures 4 to 6 , as an example, the furniture angle adjustment device 100 of the first embodiment further comprises a spring 70 and a telescopic drive 92. The telescopic drive 92 comprises a drive body 921 and a sliding body 922 which reciprocally slides on the drive body 921. A second fixed rod 93 is fixed between the left and right base frames 10. The sliding body 922 is hinged to the first fixed rod 91, and the drive body 921 is hinged to the second fixed rod 93. The telescopic drive 92 is used to achieve the purpose of automatically adjusting the angle of the backrest 300 together with the first intermediate connecting rod 40. The second connecting frame 30 is provided with a first mounting structure 33 which is located between the second hinge position 12 and the fourth hinge position 321 and is used to mount one end of the spring 70. The first intermediate connecting rod 40 is provided with a second mounting structure 41 which is used to mount the other end of the spring 70. Therefore, the spring 70 is used to keep the first intermediate connecting rod 40 and the second connecting frame 30 in a tensioned state, so that the furniture angle adjustment device 100 of the first embodiment can absorb slight shaking caused by the gap of the furniture angle adjustment device 100. Specifically, the first mounting structure 33 and the second mounting structure 41 are both convexly arranged convex columns. Figure 2 , Figure 4 and Figure 6 , as an example, the telescopic drive 92 is an electric push rod, which is used to achieve the purpose of continuously adjusting the angle of the backrest 300 together with the first intermediate connecting rod 40. In addition, the spring 70 is a tensile spring, but the embodiment is not limited thereto. Furthermore, the first mounting structure 33 and the second mounting structure 41 are both convexly arranged convex columns. It should be noted that in other embodiments, the sliding body 922 can be hinged to the second fixed rod 93 and the drive body 921 can be hinged to the first fixed rod 92, and therefore the embodiment is not limited to the abutment shown in the drawings. In addition, the first fixed rod 91 and the second fixed rod 93 are both square tubes, but the embodiment is not limited thereto.
[0035] Please refer to Figures 7 to 8 , the structure of the furniture angle adjustment device 100' of the second embodiment is basically the same as that of the furniture angle adjustment device 100 of the first embodiment, and the difference is as follows:
[0036] (1) The angle adjustment device 100` for furniture of the second embodiment does not have the telescopic driver 92, and correspondingly, does not have the second fixed rod 93.
[0037] (2) The angle adjustment device 100` for furniture of the second embodiment has the first intermediate connecting rod 40 hinged to the second end 32 of the second connecting rod 30 through a ratchet mechanism 82, and correspondingly, the fourth hinge position 321 is in the ratchet mechanism 80; therefore, the ratchet mechanism 80 enables the backrest 300 to follow the manual angle adjustment of the first intermediate connecting rod 40 to have different gears, thereby meeting the need of manual adjustment.
[0038] In the angle adjustment device 100 for furniture of the first embodiment, the telescopic driver 92 is used to automatically adjust the angle of the first intermediate connecting rod 40 together with the backrest 300, and therefore, it does not have the ratchet mechanism 80.
[0039] In addition to the above-mentioned differences, the two are the same, and therefore, will not be described here.
[0040] Compared with the prior art, the design of the fifth hinge position 13 between the first hinge position 11 and the second hinge position 12 on the base frame 10, the sixth hinge position 23 between the first hinge position 11 and the third hinge position 221 on the first connecting rod 20, the sixth hinge position 23 hinged to one end of the second intermediate connecting rod 60, the other end of the second intermediate connecting rod 60 hinged to the first end 51 of the third connecting rod 50, and the second end 52 of the third connecting rod 50 hinged to the fifth hinge position 13 enables the third connecting rod 50, the second intermediate connecting rod 60, the base frame 10, and the first connecting rod 20 to jointly form an inner four-bar linkage structure, which is surrounded by an outer four-bar linkage structure formed by the base frame 10, the first connecting rod 20, the second connecting rod 30, and the first intermediate connecting rod 40, and the inner four-bar linkage structure and the outer four-bar linkage structure share the base frame 10 and the first connecting rod 20, which enables the pivoting of the first connecting rod 20 relative to the base frame 10 to be controlled by the third connecting rod 50 and the second intermediate connecting rod 60, thereby making the angle adjustment of the first intermediate connecting rod 40 more stable and smooth under the cooperation of the first connecting rod 20 and the second connecting rod 30. In addition, the third connecting rod 50 needs less space when fixedly connected to the first fixed rod 91, and therefore, can be adapted to limited space.
[0041] The above only discloses preferred embodiments of the present application, which is intended to facilitate understanding and implementation by those skilled in the art, and of course cannot limit the scope of the present application. Therefore, equivalent changes made within the scope of the present application still fall within the scope of the present application.
Claims
1. A furniture angle adjustment device, comprising a base frame, a first connecting rod, a second connecting rod and a first intermediate connecting rod, the base frame is provided with a first hinge position and a second hinge position which are spaced apart from each other, the first hinge position is hinged with a first end of the first connecting rod, the second hinge position is hinged with a first end of the second connecting rod, a third hinge position is provided on a second end of the first connecting rod, a fourth hinge position is provided on a second end of the second connecting rod, the first intermediate connecting rod is hinged with the third hinge position and the fourth hinge position respectively, the first intermediate connecting rod can be adjusted in angle relative to the base frame under cooperation of the first connecting rod and the second connecting rod, characterized in that, The furniture angle adjusting device further comprises a third connecting rod and a second intermediate connecting rod, the base frame is further provided with a fifth hinge position between the first hinge position and the second hinge position, the first connecting rod is provided with a sixth hinge position between the first hinge position and the third hinge position, the sixth hinge position is hinged to one end of the second intermediate connecting rod, the other end of the second intermediate connecting rod is hinged to the first end of the third connecting rod, and the second end of the third connecting rod is hinged to the fifth hinge position.
2. The angle adjustment device for furniture according to claim 1, characterized in that The second end of the third connecting rod is provided with an assembly structure, the assembly structure is arranged opposite to the first end of the third connecting rod with the fifth hinge position as the center; and the assembly structure is a bending structure in which the end of the second end of the third connecting rod is bent away from the base frame.
3. The angle adjustment device for furniture according to claim 1, characterized in that The first intermediate connecting rod can be adjusted in angle between an initial position and a terminal position; when the first intermediate connecting rod switches to the initial position, the first connecting rod and the second connecting rod are folded on the base frame; and when the first intermediate connecting rod switches to the terminal position, the first connecting rod and the second connecting rod are unfolded from the base frame.
4. The angle adjustment device for furniture according to claim 3, characterized in that The base frame is provided with a limiting structure, the limiting structure is abutted and limited by one of the first connecting rod, the second connecting rod and the third connecting rod when the first intermediate connecting rod switches to the terminal position.
5. The angle adjustment device for furniture according to claim 1, characterized in that, The distance between the first hinge position and the third hinge position is D1, the distance between the first hinge position and the second hinge position is D2, the distance between the third hinge position and the fourth hinge position is D3, and the distance between the second hinge position and the fourth hinge position is D4; wherein D1>D2>D3>D4.
6. The angle adjustment device for furniture according to claim 1, characterized in that Further comprising a spring, the second connecting rod is provided with a first mounting structure between the second hinge position and the fourth hinge position for mounting one end of the spring, and the first intermediate connecting rod is provided with a second mounting structure for mounting the other end of the spring.
7. The angle adjustment device for furniture according to claim 1, characterized in that The first intermediate connecting rod is hinged to the second end of the second connecting rod by means of a ratchet mechanism, and the fourth hinge position is in the ratchet mechanism.
8. The angle adjustment device for furniture according to claim 2, characterized in that The base frame, the first connecting rod, the second connecting rod, the third connecting rod and the second intermediate connecting rod are arranged separately left and right, and a first fixed rod is fixed between the assembly structures on the left and right sides.
9. The angle adjustment device for furniture according to claim 8, characterized in that Further comprising a telescopic driver, the telescopic driver comprises a driver body and a sliding body reciprocally sliding on the driver body, a second fixed rod is fixed between the base frames on the left and right sides, one of the driver body and the sliding body is hinged to the first fixed rod, and the other of the driver body and the sliding body is hinged to the second fixed rod.
10. Furniture comprising a furniture body and a backrest, characterized in that The furniture further comprises the furniture angle adjusting device according to any one of claims 1 to 9, the base frame is assembled to the furniture body, and the backrest is assembled to the first intermediate connecting rod.