Foldable chair frame and foldable chair
By installing handles and adjustment components on the folding chair frame, the problem of users being unable to switch between sitting and reclining positions is solved, enabling convenient switching without getting up.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU ZHENGCHUANG INDUSTRIAL DESIGN CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-04-17
AI Technical Summary
The adjustment mechanism of the existing folding chair is located at the lower rear of the chair frame, which cannot be operated by the user while sitting in the chair, making it impossible to switch between sitting and reclining positions.
A foldable chair frame has been designed, including a side frame, a support frame, and a backrest frame. By setting handles and adjustment components on the chair frame, users can switch between a sitting position and a reclining position. The handles are located on the upper bar section for easy operation.
It allows users to switch between sitting and reclining positions by pulling a handle without getting up, improving ease of use.
Smart Images
Figure CN224125551U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of folding chairs, and more particularly to a foldable chair frame and a folding chair. Background Technology
[0002] Some existing folding chairs mainly consist of a foldable chair frame and a flexible seat mounted on the frame. For these types of reclining chairs, in order to meet different user needs, the backrest can usually be adjusted so that the folding chair can switch between a reclining position and a sitting position. Generally speaking, the backrest tilts backward at a greater angle in the reclining position than in the sitting position, in order to accommodate the user's reclining needs.
[0003] However, in some existing folding chairs, the adjustment components for reclining and sitting positions are generally located at the lower rear of the chair frame. When the user is sitting in the chair, their hands cannot reach the adjustment components, so they need to get up to make the adjustment. In other words, it is impossible to switch the folding chair's state while sitting in the chair, so this needs to be improved. Utility Model Content
[0004] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this application is to provide a foldable chair frame and a folding chair.
[0005] To achieve the above objectives, this application provides the following technical solution.
[0006] On one hand, this application provides a foldable chair frame, comprising:
[0007] Two side frames are arranged opposite each other along a first direction. Each side frame includes a first crossbar and an adjustment assembly. The first crossbar includes a first rod and a second rod hinged at the middle of a first hinge point. The upper end of the first rod is hinged to a first slide block. The second rod includes an upper rod section located above the first hinge point and a lower rod section located below the first hinge point. The adjustment assembly includes a first pull rod, a second pull rod, a handle, and a second slide block. The second slide block is slidably connected to the lower rod section. The first end of the first pull rod and the first end of the second pull rod are respectively hinged to the handle. The second end of the first pull rod is hinged to the second slide block, and the second end of the second pull rod is hinged to the upper rod section. The handle can be attached to the upper rod section.
[0008] A support frame, which is disposed between the two side frames, is used to support the two side frames in a first direction when the chair frame is unfolded;
[0009] The backrest frame includes two backrest rods, which are respectively connected to two first slides. The first slides are slidable relative to the backrest rods along the axial direction of the backrest rods and are also rotatable relative to the backrest rods.
[0010] As an optional embodiment of this application, in the unfolded state, the handle is engaged with the upper rod section.
[0011] As an optional embodiment of this application, the handle is U-shaped, and at least one of the two ends of the handle is provided with a slot that can be engaged with the upper rod section.
[0012] As an optional embodiment of this application, the side frame further includes a support rod, the first end of which is hinged to a third slide block, the third slide block being disposed on the rod segment of the first rod located below the first hinge point, and capable of sliding relative to the first rod along the axial direction of the first rod; the second end of the support rod is hinged to the upper rod segment or the second pull rod.
[0013] As an optional embodiment of this application, the lower ends of the first rod and the lower ends of the second rod are both hinged with foot supports.
[0014] As an optional embodiment of this application, the support frame includes a second crossbar and a third crossbar arranged opposite to each other along a second direction, the second direction being perpendicular to the first direction; the upper end of the second bar is hinged to a hinge seat;
[0015] The second crossbar includes two third rods hinged together in the middle. The upper ends of the two third rods are respectively hinged to the two first slide blocks, and the lower ends of the two third rods are respectively hinged to the two foot supports at the bottom of the two second rods.
[0016] The third crossbar includes two fourth bars that are hinged together in the middle; the two fourth bars are respectively hinged to two hinge seats, and the lower ends of the two fourth bars are respectively hinged to the foot support members at the bottom of the two first bars.
[0017] As an optional embodiment of this application, the upper end of the fourth rod extends upward at least partially to form a hinge seat as an extension for mounting the handrail.
[0018] As an optional embodiment of this application, each of the two first rods has a front support rod hinged to its lower end foot support member, and the two front support rods are hinged together at the middle.
[0019] As an optional embodiment of this application, the support frame includes two connecting rods, one of which has its two ends fixed to two first slide blocks, and the other has its two ends fixed to the upper ends of two second rods.
[0020] On the other hand, this application also provides a folding chair, including a chair frame and a flexible seat mounted on the chair frame, wherein the chair frame is the aforementioned foldable chair frame.
[0021] Compared with the prior art, the advantages of this application are:
[0022] The chair frame provided in this application can switch between a folded state and an unfolded state. In the unfolded state, the user can sit on the chair and switch between a sitting position and a reclining position by pulling the handle. That is, the user can switch the state of the folding chair (switching between a sitting position and a reclining position) without getting up.
[0023] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description
[0024] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which:
[0025] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.
[0026] Figure 1 A schematic diagram of the chair frame of this application in its unfolded state is shown (the chair frame is in a seated position).
[0027] Figure 2 A schematic diagram of the side frame structure of this application is shown;
[0028] Figure 3 A schematic diagram of the handle structure of this application is shown;
[0029] Figure 4 This diagram shows the structural schematic of the chair frame in the folding process of this application;
[0030] Figure 5 This diagram shows the structural schematic of the chair frame in its folded state.
[0031] Figure 6 A schematic diagram of the structure of a folding chair using the chair frame of this application is shown. Figure 1 (The chair frame is in a seated position);
[0032] Figure 7 It shows Figure 6 The main view;
[0033] Figure 8 A schematic diagram of the structure of a folding chair using the chair frame of this application is shown. Figure 2 (The chair frame is in a reclining position);
[0034] Figure 9 It shows Figure 8 The main view;
[0035] Figure 10A schematic diagram of the chair frame without a front support rod is shown in this application.
[0036] Explanation of the labels in the diagram:
[0037] J1, first hinge point; J2, second hinge point; J3, third hinge point;
[0038] 1. Side frame; 11. First crossbar; 111. First rod; 112. Second rod; 112a. Lower rod section; 112b. Upper rod section; 12. Adjustment assembly: 121. First pull rod; 122. Second pull rod; 123. Handle; 123a. Slot; 13. First slide; 14. Second slide; 15. Support rod; 151. Third slide; 16. Foot support; 17. Hinge seat;
[0039] 2. Support frame; 21. Second crossbar; 211. Third bar; 22. Third crossbar; 221. Fourth bar; 221a. Extension section;
[0040] 3. Backrest bar;
[0041] 4. Front support rod;
[0042] 5. Seat surface; 51. Backrest; 52. Seat surface; 53. Leg rest area; 54. Armrests. Detailed Implementation
[0043] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0044] Example 1
[0045] like Figure 1-10 As shown, this embodiment provides a foldable chair frame, mainly used for foldable chairs, which can also be called foldable recliners, etc.
[0046] The foldable chair frame (hereinafter referred to as the chair frame) provided in this embodiment can switch between an unfolded state (or a used state) and a folded state.
[0047] Among them, such as Figure 1 As shown, the foldable chair frame mainly includes two side frames 1, a support frame 2, a backrest frame, etc. The following is a detailed explanation of each component;
[0048] In this embodiment, as Figure 1As shown, the two side frames 1 are arranged opposite each other along the first direction, where the first direction can be understood as the width direction (or left-right direction) of the chair frame when it is unfolded; correspondingly, for ease of explanation, the direction perpendicular to the first direction is referred to as the second direction in this application, which can also be understood as the length direction (or front-back direction) of the chair frame when it is unfolded.
[0049] Since the two side frames 1 are basically the same in structure, this embodiment will use one of them as an example for specific explanation below, combined with Figure 1 and Figure 2 As shown, the side frame 1 includes a first cross rod 11 and an adjustment assembly 12. The first cross rod 11 includes a first rod 111 and a second rod 112 hinged at the middle to a first hinge point J1. That is, the first rod 111 and the second rod 112 are hinged to form an X-shaped cross linkage structure. The hinge point is the first hinge point J1, and the rotation axis of the first hinge point J1 is parallel to the first direction. This allows the first rod 111 and the second rod 112 to rotate relative to each other around the first hinge point J1, so as to realize the extension and retraction of the side frame 1 in the second direction for unfolding and folding.
[0050] In addition, the upper end of the first rod 111 is hinged to a first slide block 13; the second rod 112 includes an upper rod segment 112b located above the first hinge point J1 and a lower rod segment 112a located below the first hinge point J1, that is, the second rod 112 is divided into an upper rod segment 112b on the upper side and a lower rod segment 112a on the lower side with the first hinge point J1 as the boundary.
[0051] The backrest frame is mainly used for installing the backrest of a folding chair. It is located on the back of the folding chair and includes two backrest rods 3. The backrest of the folding chair is installed between the two backrest rods 3.
[0052] It is worth noting that in this embodiment, the chair frame is in the unfolded state, for example... Figure 1 As shown, the angle of the backrest frame can be adjusted so that the chair frame, when unfolded, presents a reclining position (see reference). Figure 8 (as shown in the image) and sitting posture (refer to the image) Figure 1 and Figure 6 (As shown in the diagram). In the reclining position, compared to the sitting position, the backrest tilts backward at a greater angle, allowing the user to recline on the back of the folding chair.
[0053] In this embodiment, two backrest rods 3 are respectively connected to two first slide blocks 13. The first slide blocks 13 are slidable relative to the backrest rods 3 along their axial direction and are capable of flipping back and forth relative to the backrest rods 3. For example, in this embodiment, the first slide block 13 has a first movable hole, through which the backrest rods 3 are movably inserted. The first movable hole allows the backrest rods 3 to flip back and forth within it. For example, in some embodiments, the first movable hole is an oblong hole extending in a second direction. This allows the first slide blocks 13 to slide axially relative to the backrest rods 3 and flip back and forth, ensuring that the backrest rods 3 can adjust their angle and switch between a reclining and sitting position.
[0054] In addition, the lower end of the backrest rod 3 is hinged to the second slide block 14 around an axis parallel to the first direction.
[0055] Adjustment component 12 is mainly used by the user to switch the chair frame between reclining and sitting positions. Specifically:
[0056] Combination Figure 1 and Figure 2 As shown, the adjustment assembly 12 includes a first pull rod 121, a second pull rod 122, a handle 123, and a second slide block 14.
[0057] The second slide block 14 is slidably connected to the lower rod segment 112a, that is, the second slide block 14 can slide on the lower rod segment 112a along the axial direction of the lower rod segment 112a. For example, in this embodiment, the second slide block 14 is slidably sleeved on the lower rod segment 112a.
[0058] Handles 123 primarily serve as the gripping point for the human hand, and in some embodiments, such as... Figure 3 As shown, the handle 123 has a U-shaped structure.
[0059] The first end of the first pull rod 121 and the first end of the second pull rod 122 are respectively hinged to the handle 123, wherein the hinge axis of the two is parallel to the first direction; the second end of the first pull rod 121 is hinged to the second slide block 14 about an axis parallel to the first direction; the second end of the second pull rod 122 is hinged to the upper rod section 112b about an axis parallel to the first direction.
[0060] Furthermore, the handle 123 can be attached to the upper rod section 112b. For example, in this embodiment, when the chair frame is in the unfolded state, the handle 123 can be engaged with the upper rod section 112b; for example, at least one end of the handle 123 has a slot 123a that can be engaged with the upper rod section 112b. In this embodiment, for example... Figure 3 As shown, both ends of the handle 123 are provided with slots 123a.
[0061] When the chair frame is unfolded, the slots 123a at both ends of the handle 123 engage with the upper rod section 112b. This effectively holds the handle 123 in place, keeping it in the middle or slightly above the middle of the chair frame and preventing it from falling to the bottom. This ensures that even when the user is sitting on the folding chair, they can still grasp the handle 123 to adjust the chair frame's position.
[0062] like Figure 1 As shown, the support frame 2 is located between the two side frames 1 and is mainly used to support the two side frames 1 in the first direction when the chair frame is unfolded, so as to prevent the two side frames 1 from moving inward or outward in the first direction when the user is using it, thereby stabilizing the chair frame in the first direction.
[0063] As can be seen, the chair frame provided in this embodiment can not only switch between a folded state and an unfolded state, but also, in the unfolded state, the angle of the backrest rod 3 can be adjusted by operating the handle 123 to switch between a reclining state and a sitting state. Furthermore, in this embodiment, the handle 123 is located at the upper rod section 112b, which is relatively high, so even when the user is sitting in the folding chair, they can pull the handle 123 to switch between the reclining and sitting states. The specific adjustment process is as follows:
[0064] For ease of understanding, in this embodiment, as... Figure 1 and Figure 2 As shown, the hinge point between the second pull rod 122 and the second rod 112 is designated as the third hinge point J3, and the hinge point between the second pull rod 122 and the handle 123 is designated as the second hinge point J2.
[0065] In a seated position, such as Figure 1 and Figure 7 As shown, handle 123 is engaged on the second rod 112, at which point the second hinge point J2 is located to the lower left of the third hinge point J3. When switching from a sitting to a reclining position, the user first grasps the handle and then pulls it upwards and to the right, causing the second rod 122 to rotate upwards around the second hinge point J2 until the handle is engaged on the upper part of the upper rod section 112b. Figure 9 As shown, the tilted position is switched, and at this time the second hinge point J2 is located to the upper right of the third hinge point J3.
[0066] To avoid wear caused by the lower ends of the first rod 111 and the second rod 112 directly contacting the ground, in some embodiments, such as Figure 1 As shown, the lower ends of the first rod 111 and the second rod 112 are both hinged with foot support members 16, which means that a total of 4 foot support members 16 are provided in this embodiment. When in use, the foot support members 16 are used to support the ground.
[0067] In addition, to improve the support strength of the side frame 1, in some embodiments, such as Figure 1 As shown, the side frame 1 also includes a support rod 15. The first end of the support rod 15 is hinged to a third slide block 151 about an axis parallel to the first direction. The third slide block 151 is provided on the rod segment of the first rod 111 located below the first hinge point J1, and the third slide block 151 can slide relative to the first rod 111 along the axial direction of the first rod 111. For example, the third slide block 151 is slidably sleeved on the first rod 111.
[0068] The second end of the support rod 15 is hinged to the upper rod segment 112b or the second tie rod 122 around an axis parallel to the first direction. For example, in this embodiment, the second end of the support rod 15 is hinged to the second tie rod 122, and its hinge axis coincides with the hinge axis of the second tie rod 122 and the second rod 112.
[0069] In some embodiments, in order to allow the entire chair frame to fold in a bundle-like manner (i.e. Figure 5 (as shown in the folded state), meaning that not only can the side frame 1 be folded along the second direction, but the support frame 2 can also be folded along the first direction. Specifically:
[0070] like Figure 1 As shown, the support frame 2 includes a second cross rod 21 and a third cross rod 22 arranged opposite to each other along the second direction; in addition, the upper end of the second rod 112 is hinged to a hinge seat 17 around an axis parallel to the first direction.
[0071] The second crossbar 21 includes a third bar 211 with two middle sections hinged together, and the third crossbar 22 includes a fourth bar 221 with two middle sections hinged together, so that both the second crossbar 21 and the third crossbar 22 have an X-shaped linkage structure.
[0072] The hinge axes of the two third rods 211 and the two fourth rods 221 are parallel to the second direction, so that the second cross rod 21 and the third cross rod 22 can both extend and fold along the first direction.
[0073] In addition, the upper ends of the two third rods 211 are respectively hinged to the two first slides 13, and the hinge axis of the third rods 211 and the first slides 13 is parallel to the second direction. The lower ends of the two third rods 211 are respectively hinged to the two foot support members 16 at the bottom of the two second rods 112, and the hinge axis of the third rods 211 and the corresponding foot support members 16 is parallel to the second direction.
[0074] The two fourth rods 221 are respectively hinged to the two hinge seats 17. For example, the fourth rods 221 are movably inserted in the hinge seats 17. The lower ends of the two fourth rods 221 are respectively hinged to the foot support members 16 at the bottom of the two first rods 111. The hinge axis of the fourth rod 221 and the hinge seat 17, as well as the hinge axis of the fourth rod 221 and the foot support member 16, are parallel to the second direction.
[0075] Thus, the two first crossbars 11, the second crossbar 21, and the fourth crossbar together form the four-sided frame of the chair frame. When folding, the two first crossbars 11 contract and fold along the second direction, while the third crossbar 22 and the fourth crossbar contract and fold along the first direction, resulting in the entire chair frame ultimately presenting a bundled fold. Figure 5 The state shown.
[0076] It is worth noting that in some other alternative embodiments (not shown in the figure), the support frame 2 can also be designed as a non-foldable structure, so that the chair frame can be folded flat, that is, only the side frame 1 can be folded. For example, the support frame 2 includes two connecting rods (not shown in the figure). The two ends of one of the connecting rods are respectively fixed to the two first slides 13, and the two ends of the other are respectively fixed to the upper ends of the two second rods 112. The two connecting rods support the two side frames 1 in the first direction. At this time, the two side frames 1 cannot move closer or further apart in the first direction. That is, the entire side frame 1 can only be folded in the second direction, and finally presents a flat folded state.
[0077] In some embodiments, in order to accommodate a folding chair with armrests 54, combined with Figure 1 and Figure 6 As shown, the upper end of the fourth rod 221 extends upward at least partially to form a hinge seat 17 as an extension 221a for mounting the handrail 54.
[0078] Furthermore, in some embodiments, such as Figure 1 As shown, front support rods 3 are hinged to the foot support members 16 at the lower ends of the two first rods 111. The lower ends of the front support rods 3 can rotate relative to the foot support members 16 about an axis parallel to the first direction and also about an axis parallel to the second direction. The two front support rods 3 are hinged together at the middle to form an X-shaped cross-link structure, thus allowing the two front support rods 3 to adapt to the bundled folding of the chair frame, such as... Figure 5 As shown.
[0079] Combination Figure 1 and Figure 6 As shown, the two front support rods 3 are mainly used to install the leg placement area 53 of the folding chair seat 5.
[0080] Of course, it is worth noting that in some optional embodiments, the front support rod 3 may not be provided; the specific design can be based on actual needs. That is, when the folding chair needs to have a leg rest function, the front support rod 3 can be installed; if the leg rest function is not required, the front support rod 3 can be omitted, as can be referred to... Figure 10 The state shown.
[0081] Example 2
[0082] Combination Figure 1-10 As shown, this embodiment further provides a folding chair based on embodiment 1, including a chair frame and a seat 5 mounted on the chair frame. The chair frame adopts the folding chair frame provided in embodiment 1. Specifically:
[0083] like Figure 6 As shown, the seat surface 5 is made of a flexible material to ensure that it can be folded together with the chair frame; for example, the seat surface 5 is made of textile fabric. As an optional installation method, during installation, the seat surface 5 can be fixed to the backrest rod 3, the first slide 13, and the hinge seat 17 so that when the folding chair is unfolded, the seat surface 5 forms the backrest 51 and the seat surface 52.
[0084] In an embodiment of a chair frame equipped with a front support rod 3, such as Figure 6 As shown, the seat 5 is also fixed to the front support rod 3, so that when the seat 5 is unfolded, a leg placement area 53 supporting the legs is also formed.
[0085] In an embodiment of the chair frame with extension 221a, the folding chair further includes flexible armrests 54, for example, made of textile fabric. The armrests 54 are fixed to the extension 221a and the backrest rod 3, respectively.
[0086] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this application can be achieved, and this is not limited herein.
[0087] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0088] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A foldable chair frame, characterized in that, include: Two side frames are arranged opposite each other along a first direction. Each side frame includes a first crossbar and an adjustment assembly. The first crossbar includes a first rod and a second rod hinged at the middle of a first hinge point. The upper end of the first rod is hinged to a first slide block. The second rod includes an upper rod section located above the first hinge point and a lower rod section located below the first hinge point. The adjustment assembly includes a first pull rod, a second pull rod, a handle, and a second slide block. The second slide block is slidably connected to the lower rod section. The first end of the first pull rod and the first end of the second pull rod are respectively hinged to the handle. The second end of the first pull rod is hinged to the second slide block, and the second end of the second pull rod is hinged to the upper rod section. The handle can be attached to the upper rod section. A support frame, which is disposed between the two side frames, is used to support the two side frames in a first direction when the chair frame is unfolded; The backrest frame includes two backrest rods, which are respectively connected to two first slides. The first slides are slidable relative to the backrest rods along the axial direction of the backrest rods and are also rotatable relative to the backrest rods. The backrest rods are hinged to the second slides.
2. A foldable chair frame according to claim 1, wherein When the chair frame is in the unfolded state, the handle is engaged with the upper rod section.
3. A foldable chair frame according to claim 2, wherein The handle is U-shaped, and at least one end of the handle has a slot that can be engaged with the upper rod section.
4. The foldable chair frame of claim 1, wherein, The side frame also includes a support rod, the first end of which is hinged to a third slide block. The third slide block is located on the section of the first rod below the first hinge point and can slide relative to the first rod along the axial direction of the first rod. The second end of the support rod is hinged to the upper rod section or the second tie rod.
5. The foldable chair frame of claim 1, wherein, Both the lower ends of the first rod and the lower ends of the second rod are hinged with foot supports.
6. A foldable chair frame according to claim 5, wherein The support frame includes a second crossbar and a third crossbar arranged opposite each other along a second direction, the second direction being perpendicular to the first direction; the upper end of the second bar is hinged to a hinge seat; The second crossbar includes two third bars that are hinged together in the middle. The upper ends of the two third bars are respectively hinged to the two first slide blocks, and the lower ends of the two third bars are respectively hinged to the two foot supports at the bottom of the two second bars. The third crossbar includes two fourth bars that are hinged together in the middle; the two fourth bars are respectively hinged to two hinge seats, and the lower ends of the two fourth bars are respectively hinged to the foot support members at the bottom of the two first bars.
7. A foldable chair frame according to claim 6, wherein The upper end of the fourth rod extends upward at least partially to form a hinged seat as an extension for mounting the handrail.
8. A foldable chair frame according to claim 6 or 7, characterised in that, Each of the two first rods has a front support rod hinged to its lower foot support member, and the two front support rods are hinged together at the middle.
9. The foldable chair frame of claim 5, wherein, The support frame includes two connecting rods. One of the connecting rods has its two ends fixed to two first slide blocks, and the other has its two ends fixed to the upper ends of two second rods.
10. A folding chair comprising a chair frame and a flexible seat mounted to the chair frame, characterized in that, The chair frame is a foldable chair frame as described in any one of claims 1-9.