Swing chair frame

Abstract

The application discloses a rocking chair frame, which comprises front and back frames, a seat cushion frame, a seat cushion frame control assembly, a bearing vertical frame, a cross connection frame and a rocking assembly.

Description

Technical Field

[0001] This invention relates to a type of furniture, and more particularly to a chair frame. Background Technology

[0002] With the continuous development of the economy and the continuous progress of society, people's lives are provided with increasingly abundant material consumer goods, and furniture is one of them.

[0003] For example, in the movable rocking chair or rocking chair disclosed in Chinese Patent Application No. 202121302819.5, since the fixed support of the base supported by the ground is assembled and connected to the tilting mechanism from the inside of the tilting mechanism through a swinging or rocking mechanism, the armrests and the seat are simultaneously installed on the seat support of the tilting mechanism and move back and forth with the seat support. Since the seat support also rotates and lifts upward during the forward movement, the armrests and the seat also move forward and rotate upward together. Because the armrests also move forward and rotate upward, the distance between the armrests and the ground is relatively large.

[0004] Therefore, there is an urgent need for a chair frame to overcome the above-mentioned defects. Summary of the Invention

[0005] The purpose of this invention is to provide a chair frame that allows for a smaller distance between the armrests and the ground.

[0006] To achieve the above objectives, the chair frame of the present invention includes a base frame, a seat cushion frame, a seat cushion frame control assembly, a support frame, a horizontal connecting frame, and a swing assembly. The base frame extends forward and backward and is arranged with its sides facing each other, each having an outer side facing away from the other. The seat cushion frame is located above the corresponding base frame and can move forward and backward relative to the base frame. The seat cushion frame control assembly is assembled between the seat cushion frame and the base frame to control the forward and backward movement of the seat cushion frame. The support frame is located on the outer side of the base frame and is also arranged with its sides facing each other. The horizontal connecting frame is located below the base frame and also fixes the left and right support frames together. The swing assembly is assembled between the base frame and the support frame to control the forward and backward swing of the base frame relative to the support frame.

[0007] Compared with existing technologies, the design utilizes a "supporting uprights located on the outer side of the base frame and spaced apart on the left and right, a horizontal connecting frame located below the base frame and fixing the left and right supporting uprights together, and a swing assembly assembled between the base frame and the supporting uprights." In use, the armrests are assembled from the supporting uprights and the seat cushions are assembled from the seat cushion frame, allowing the armrests to be separated from the seat cushion frame and not move back and forth with the seat cushion frame, thus reducing the distance between the armrests and the ground. Because the armrests do not move back and forth with the seat cushion frame, there is no need to make a large arc corner at the lower rear of the armrests, resulting in tighter lateral coverage of the armrests.

[0008] Preferably, the swing assembly includes a front swing arm and a rear swing arm located between the support frame and the base frame and spaced apart from each other. The lower ends of both the rear swing arm and the front swing arm are provided with a lower hinge structure that is hinged to the base frame, and the upper ends of both the rear swing arm and the front swing arm are provided with an upper hinge structure that is hinged to the support frame.

[0009] Preferably, the distance between the upper hinge structures of the front and rear swing arms is greater than the distance between the lower hinge structures of the front and rear swing arms.

[0010] Preferably, the distance between the upper hinge structure and the lower hinge structure of either the front or rear swing arm is less than the distance between the lower hinge structures of both the front and rear swing arms.

[0011] Preferably, the distance between the upper and lower hinge structures of the front swing arm is the same as the distance between the upper and lower hinge structures of the rear swing arm.

[0012] Preferably, the horizontal connecting frame extends to the left and right.

[0013] Preferably, a rotatable chassis is mounted below the transverse connecting frame.

[0014] Preferably, the transverse connecting frame includes a transverse front link and a transverse rear link that are spaced apart from each other.

[0015] Preferably, the seat cushion frame is provided with a stop bar located behind the horizontal connecting frame. When the seat cushion frame moves forward to a preset position, the stop bar abuts against the horizontal connecting frame from the rear to prevent the seat cushion frame from moving forward.

[0016] Preferably, the abutment rod is provided with a rotating component for abutting against the horizontal connecting frame, and a tension spring is provided between the abutment rod and the base frame at a position behind the abutment rod for pulling the seat cushion frame to return to its rearward position.

[0017] Preferably, the seat frame control assembly includes a first link, a second link located corresponding to the rear of the first link, a front and rear extension rod extending forward and backward and hinged to the lower ends of both the first and second links respectively, and a third link and a fourth link hinged to both the front and rear extension rod and the seat frame, wherein the fourth link is located corresponding to the rear of the third link, and the upper ends of both the first and second links are hinged to the base frame.

[0018] Preferably, the third link extends downward to form a supporting arm, which abuts against the horizontal connecting frame from the front when the seat frame moves forward to a preset position.

[0019] Preferably, the abutment arm is provided with a rotating component for abutting against the transverse connecting frame.

[0020] Preferably, the front and rear extension rods are provided with a first hinge structure for hinged to the lower end of the first connecting rod, a second hinge structure for hinged to the third connecting rod, a third hinge structure for hinged to the lower end of the second connecting rod, and a fourth hinge structure for hinged to the fourth connecting rod. The first hinge structure, the second hinge structure, the third hinge structure, and the fourth hinge structure are arranged sequentially in a front-to-back direction on the front and rear extension rods. Attached Figure Description

[0021] Figure 1 This is a perspective view of the chair frame of the present invention in a seated (CLOSE) position.

[0022] Figure 2 yes Figure 1 The plan view of the chair frame in the position shown, viewed in the direction indicated by arrow A.

[0023] Figure 3 yes Figure 1 An exploded 3D view of the chair frame as shown.

[0024] Figure 4 yes Figure 3 Enlarged view of section C.

[0025] Figure 5 yes Figure 1 An exploded 3D view of the chair frame as shown.

[0026] Figure 6 yes Figure 5 A further exploded 3D diagram.

[0027] Figure 7 yes Figure 6 A plan view viewed in the direction indicated by arrow B.

[0028] Figure 8 yes Figure 7A further decomposition planar diagram.

[0029] Figure 9 This is a perspective view of the chassis, horizontal connecting frame, supporting upright, swing assembly and base frame assembled together in the swing chair frame of the present invention.

[0030] Figure 10 yes Figure 9 3D exploded view.

[0031] Figure 11 This is a perspective view of the chair frame of the present invention in a relaxed posture (TV) state.

[0032] Figure 12 This is a perspective view of the chair frame of the present invention in a fully reclining (OPEN) position. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings.

[0034] Please see Figure 1 and Figure 2 The chair frame 100 of the present invention includes a base frame 10, a seat cushion frame 20, a seat cushion frame control assembly 30, a support frame 40, a horizontal connecting frame 50, and a swing assembly 60. The base frame 10 extends forward and backward, and is arranged with one side to the left and one side to the right, as shown in the diagram. Figure 2 As shown, the base frame 10 on the left is used for assembling the left armrest, and the base frame 10 on the right is used for assembling the right armrest. The left and right base frames 10 each have outer sides 11 facing each other; that is, for the left base frame 10, its outer side 11 is located on the left side of the base frame 10; for the right base frame 10, its outer side 11 is located on the right side of the base frame 10. The seat cushion frame 20 is located above the corresponding base frame 10, and the seat cushion frame 20 can also move back and forth relative to the base frame 10.

[0035] Combined Figures 5 to 7 The seat cushion frame control assembly 30 is mounted between the seat cushion frame 20 and the base frame 10 to control the back-and-forth movement of the seat cushion frame 20; alternatively, it is... Figure 12 In the example, a seat frame control assembly 30 is installed between the left base frame 10 and the seat cushion frame 20, and a seat cushion frame control assembly 30 is installed between the right base frame 10 and the seat cushion frame 20. This arrangement of the seat cushion frame control assemblies 30 on the left and right sides satisfies the requirement that seat cushion frame control assemblies 30 be installed between the left base frame 10 and the seat cushion frame 20, and between the right base frame 10 and the seat cushion frame 20. This design effectively improves the smoothness and reliability of the seat cushion frame 20's forward and backward movement relative to the base frame 10. Furthermore, in... Figure 2In this example, the supporting frame 40 is located on the outer side 11 of the base frame 10. The supporting frames 40 are also arranged with one on the left and one on the right, so that the base frame 10 on the left and the base frame 10 on the right are respectively located between the supporting frames 40 on the left and the supporting frames 40 on the right, as shown in the figure. Figure 2 As shown. In addition, the horizontal connecting frame 50 is located below the base frame 10. The horizontal connecting frame 50 also fixes the left and right supporting frames 40 together, so as to realize the function of the horizontal connecting frame 50 supporting the supporting frames 40.

[0036] The swing assembly 60 is assembled between the base frame 10 and the supporting frame 40 to control the back-and-forth swing of the base frame 10 relative to the supporting frame 40; that is, the swing assembly 60 allows the base frame 10 to swing back and forth relative to the supporting frame 40. It should be noted that since the base frame 10 and the supporting frame 40 are arranged opposite each other on the left and right, the swing assembly 60 can also be arranged opposite each other on the left and right, so that the left or right swing assembly 60 is assembled between the base frame 10 and the supporting frame 40 on the same side, as shown in the diagram. Figure 2 As shown, this ensures the synchronous coordination of the back-and-forth swinging of the base frames 10 on both sides relative to the supporting uprights 40. More specifically, see the description below.

[0037] like Figures 1 to 7 and Figures 9 to 10 As shown, as an example, the swing assembly 60 includes a front swing arm 61 and a rear swing arm 62 located between the support frame 40 and the base frame 10 and spaced apart from each other. The lower end of the rear swing arm 62 has a lower hinge structure 621 hinged to the base frame 10, and the upper end of the rear swing arm 62 has an upper hinge structure 622 hinged to the support frame 40. The lower end of the front swing arm 61 has a lower hinge structure 611 hinged to the base frame 10, and the upper end of the front swing arm 61 has an upper hinge structure 612 hinged to the support frame 40. This design enables the front swing arm 61, the rear swing arm 62, the base frame 10, and the support frame 40 to form a double rocker mechanism, thereby effectively ensuring the reliability of the back-and-forth swing of the base frame 10 relative to the support frame 40. Specifically, in... Figure 7 In this example, the distance between the upper hinge structure 612 of the front swing arm 61 and the upper hinge structure 622 of the rear swing arm 62 is greater than the distance between the lower hinge structure 611 of the front swing arm 61 and the lower hinge structure 621 of the rear swing arm 62. This design allows the base frame 10 to swing back and forth relative to the supporting frame 40 with a larger amplitude when the front and rear swing dimensions are the same, thus resulting in a better swing effect. More specifically, in Figure 7In this example, the distance between the upper hinge structure 612 and the lower hinge structure 611 of the front swing arm 61 is smaller than the distance between the lower hinge structure 611 of the front swing arm 61 and the lower hinge structure 621 of the rear swing arm 62, and the distance between the upper hinge structure 622 and the lower hinge structure 621 of the rear swing arm 62 is smaller than the distance between the lower hinge structure 611 of the front swing arm 61 and the lower hinge structure 621 of the rear swing arm 62; in addition, the distance between the upper hinge structure 612 and the lower hinge structure 611 of the front swing arm 61 and the distance between the upper hinge structure 622 and the lower hinge structure 621 of the rear swing arm 62 are the same; this design more effectively ensures that the base frame 10 can swing back and forth relative to the support frame 40 with a larger amplitude when the back and forth swing size is the same.

[0038] like Figures 1 to 3 , Figures 5 to 6 and Figures 9 to 12 As shown, as an example, the horizontal connecting bracket extends approximately 50 degrees. Alternatively, it can be... Figures 9 to 10 As an example, the transverse connecting frame 50 includes a front transverse link 51 and a rear transverse link 52 spaced apart from each other to increase the support capacity of the transverse connecting frame 50 for the base frame 10 on both sides. Specifically, in Figures 1 to 3 , Figures 5 to 6 and Figures 9 to 12 As an example, a rotatable base 70 is fitted below the horizontal connecting frame 50, allowing the horizontal connecting frame 50 to stand horizontally and rotatably on an external support (e.g., but not limited to the ground), thereby improving the user experience of the chair frame 100 of the present invention. It should be noted that when the chair frame 100 of the present invention does not require a horizontally rotatable external support, the horizontal connecting frame 50 can be placed directly on the external support; that is, the base 70 is not required on the horizontal connecting frame 50, therefore... Figures 1 to 3 , Figures 5 to 6 and Figures 9 to 12 The above is the limit.

[0039] Combination Figure 7 and Figure 8As an example, the seat frame control assembly 30 includes a first link 31, a second link 32 located correspondingly behind the first link 31, a front and rear extension rod 33 extending forward and backward and hinged to the lower ends of both the first link 31 and the second link 32, a third link 34 hinged to both the front and rear extension rod 33 and the seat frame 20, and a fourth link 35 hinged to both the front and rear extension rod 33 and the seat frame 20. The fourth link 35 is located behind the third link 34, while the upper ends of the first link 31 and the second link 32 are hinged to the base frame 10. Therefore, the first link 31, the second link 32, the front and rear extension rods 33, and the base frame 10 work together to form an outer four-bar linkage structure, while the front and rear extension rods 33, the third link 34, the fourth link 35, and the seat cushion frame 20 work together to form an inner four-bar linkage structure. This combination of the outer and inner four-bar linkage structures ensures the reliability of the seat cushion frame 20's forward and backward movement relative to the base frame 10. Specifically, in... Figure 8 As an example, the front and rear extension rods 33 are provided with a first hinge structure 331 for hinged to the lower end of the first connecting rod 31, a second hinge structure 332 for hinged to the third connecting rod 34, a third hinge structure 333 for hinged to the lower end of the second connecting rod 32, and a fourth hinge structure 334 for hinged to the fourth connecting rod 35; the first hinge structure 331, the second hinge structure 332, the third hinge structure 333, and the fourth hinge structure 334 are arranged sequentially and alternately in the front-to-back direction of the front and rear extension rods 33, as shown in the figure. Figure 8 As shown; this design more effectively ensures the reliability of the seat frame 20's back-and-forth movement relative to the base frame 10.

[0040] like Figures 1 to 3 , Figures 5 to 8 and Figures 10 to 12 As shown, as an example, the chair frame 100 of the present invention further includes footrest mechanisms 80 mounted on the seat cushion frame 20 and arranged opposite each other on the left and right sides, so that when the footrest mechanisms 80 are opened, they can provide a place for the user to rest their feet, thereby improving the comfort of sitting in the chair frame 100 of the present invention. Additionally, in Figure 12 In the middle, the seat cushion frame 20 is provided with a support rod 21 located behind the horizontal connecting frame 50. The support rod 21 moves forward with the seat cushion frame 20 to... Figure 12 The preset position shown indicates that the seat cushion 20 abuts against the horizontal connecting frame 50 (specifically, the horizontal rear connecting rod 52 of the horizontal connecting frame 50) from behind, thus preventing the seat cushion 20 from moving forward. Furthermore, in Figure 12 As an example, the aforementioned third link 34 extends downward to form a supporting arm 341, which moves forward in the seat cushion frame 20 to... Figure 12The preset position shown indicates that the material abuts against the horizontal connecting frame 50 from the front (specifically, the horizontal front connecting rod 51 of the horizontal connecting frame 50), so that in this preset position, the horizontal connecting frame 50 is clamped by the abutment rod 21 and the abutment arm 341. Specifically, in Figure 12 As an example, the supporting arm 34 is provided with a rotating component 342 for abutting against the transverse connecting frame 50, and the supporting rod 21 is provided with a rotating component 22 for abutting against the transverse connecting frame 50. The rotating components 342 and 22 effectively improve the smoothness and reliability of the abutment between the supporting arm 34 and the transverse connecting frame 50, and between the supporting rod 21 and the transverse connecting frame 50. Furthermore, in... Figure 12 As an example, the base frame 10, located behind the abutment rod 21, is provided with a tension spring 23 between itself and the abutment rod 21 to pull the seat cushion frame 20 back to its original position, thereby facilitating the repositioning operation of the seat cushion frame 20. More specifically, in Figure 12 As an example, the rotating component 341 and the rotating component 22 can each be, but are not limited to, a rotating bearing or a rotating roller; furthermore, the supporting arm 341 and the third connecting rod 33 together form an integral structure; the supporting rod 21 is assembled and connected to the seat frame 20 by welding or using fasteners; since this assembly and connection method is well known in the art, it will not be described in detail here. It should be noted that since the footrest mechanism 80 is well known in the art, it will not be described in detail here.

[0041] Compared with the existing technology, the design of "a support frame 40 located on the outer side 11 of the base frame 10 and spaced apart on the left and right, a horizontal connecting frame 50 located below the base frame 10 and fixing the support frames 40 on the left and right sides together, and a swing assembly 60 assembled between the base frame 10 and the support frame 40" allows the armrest to be assembled by the support frame 40 and the seat cushion to be assembled by the seat cushion frame 20 during use. This makes the armrest separate from the seat cushion frame 20 and does not move back and forth with the seat cushion frame 20, thereby reducing the distance between the armrest and the ground. Since the armrest does not move back and forth with the seat cushion frame 20, the lower rear position of the armrest does not need to be made into a large arc corner, thus making the lateral coverage of the armrest more compact.

[0042] It should be noted that arrow A in the attached drawings indicates the direction of the chair frame 100 of the present invention from front to back, and arrow B indicates the direction of the chair frame 100 of the present invention from left to right. Furthermore, the chair frame 100 of the present invention can be applied to floor-standing armchairs, allowing these sofas to not only have normal unfolding and folding functions (meaning they can switch between sitting, relaxing, and fully reclining positions), but also a swinging function, thus providing a better user experience.

[0043] The above-disclosed examples are merely preferred embodiments of the present invention, intended to facilitate understanding and implementation by those skilled in the art. They should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A chair frame, comprising a base frame extending forward and backward and spaced apart to the left and right, a seat cushion frame located above the corresponding base frame and movable forward and backward relative to the base frame, and a seat cushion frame control assembly assembled between the seat cushion frame and the base frame to control the forward and backward movement of the seat cushion frame, wherein the left and right base frames each have outer sides facing each other, characterized in that, The chair frame also includes a support frame located on the outer side of the base frame and spaced apart on the left and right, a horizontal connecting frame located below the base frame and fixing the support frames on the left and right sides together, and a swing assembly assembled between the base frame and the support frames to control the back-and-forth swing of the base frame relative to the support frames.

2. The chair frame according to claim 1, characterized in that, The swing assembly includes a front swing arm and a rear swing arm located between the support frame and the base frame and spaced apart from each other. The lower ends of both the rear swing arm and the front swing arm are provided with a lower hinge structure that is hinged to the base frame, and the upper ends of both the rear swing arm and the front swing arm are provided with an upper hinge structure that is hinged to the support frame.

3. The chair frame according to claim 2, characterized in that, The distance between the upper hinge structures of the front and rear swing arms is greater than the distance between the lower hinge structures of the front and rear swing arms; the distance between the upper and lower hinge structures of either the front or rear swing arm is less than the distance between the lower hinge structures of the front and rear swing arms; the distance between the upper and lower hinge structures of the front swing arm and the distance between the upper and lower hinge structures of the rear swing arm are the same.

4. The chair frame according to claim 1, characterized in that, The horizontal connecting frame extends to the left and right; a rotatable chassis is mounted below the horizontal connecting frame.

5. The chair frame according to claim 1, characterized in that, The transverse connecting frame includes a transverse front connecting rod and a transverse rear connecting rod that are spaced apart from each other.

6. The chair frame according to claim 1, characterized in that, The seat cushion frame is provided with a stop bar located behind the horizontal connecting frame. When the seat cushion frame moves forward to a preset position, the stop bar abuts against the horizontal connecting frame from the rear to prevent the seat cushion frame from moving forward.

7. The chair frame according to claim 6, characterized in that, The abutment rod is provided with a rotating component for abutting against the horizontal connecting frame, and a tension spring is provided between the abutment rod and the base frame at a position behind the abutment rod for pulling the seat cushion frame to return to its original position.

8. The chair frame according to claim 1, characterized in that, The seat frame control assembly includes a first link, a second link located behind the first link, a front and rear extension rod that extends forward and backward and is hinged to the lower ends of both the first and second links, and a third and a fourth link that are hinged to both the front and rear extension rod and the seat frame. The fourth link is located behind the third link, and the upper ends of both the first and second links are hinged to the base frame.

9. The chair frame according to claim 8, characterized in that, The third link extends downward to form a support arm, which abuts against the horizontal connecting frame from the front when the seat frame moves forward to a preset position; the support arm is provided with a rotating component for abutting against the horizontal connecting frame.

10. The chair frame according to claim 8, characterized in that, The front and rear extension rods are provided with a first hinge structure for hinged to the lower end of the first connecting rod, a second hinge structure for hinged to the third connecting rod, a third hinge structure for hinged to the lower end of the second connecting rod, and a fourth hinge structure for hinged to the fourth connecting rod. The first hinge structure, the second hinge structure, the third hinge structure, and the fourth hinge structure are arranged sequentially in a front-to-back direction on the front and rear extension rods.

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