Cross supporting structure and folding chair

Abstract

The utility model discloses a cross supporting structure and a folding chair, and relates to the technical field of supporting structures. The cross supporting structure comprises two obliquely arranged supporting parts, a supporting part and a supporting part, the rotating part is arranged in the middle position of the two inclined supporting parts in a penetrating manner; the two mounting seats are respectively arranged at the tops of the two inclined supporting parts; the two rotary connecting pieces are respectively arranged at the bottoms of the two inclined supporting parts; the two tension springs are respectively embedded in the two inclined supporting parts and are close to one sides of the tops of the inclined supporting parts; and the two tension springs are movable shafts. The utility model solves the problems that the existing double-fork seat is not suitable for indoor household use due to the disharmony between the appearance and the use effect of the existing double-fork seat and indoor household use, and meanwhile, although a double-fork structure can bring a relatively stable seat function, the risk that a connecting rod is close to two sides to clamp hands during storage exists, and the existing double-fork seat is also not suitable for household use; and although a single-fork type seat exists in the market, the overall structural stability is weak.

Description

Technical Field

[0001] This utility model relates to the field of support structure technology, and in particular to a cross support structure and a folding chair. Background Technology

[0002] For a long time, most chairs of this type have used a double-fork design to achieve stable seating function. However, this design clashes with interior design aesthetics and functionality, making it unsuitable for indoor use. Furthermore, while the double-fork structure provides relative stability, it poses a risk of hand injury when folded up, as the connecting rods may be close to the sides, also making it unsuitable for home use. Additionally, although single-fork chairs exist on the market, their overall structural stability is generally weaker. Currently, no effective solutions have been proposed to address these issues. Utility Model Content

[0003] Purpose of the utility model: To provide a cross-support structure and a folding chair to at least solve one of the problems existing in the prior art.

[0004] Technical solution: A cross-bracing structure, comprising:

[0005] Support components are installed on both sides at an angle;

[0006] A rotating component is inserted at the middle position of the two inclined support components;

[0007] Two mounting bases are respectively disposed on the top of the two inclined support components;

[0008] Two rotating connectors are respectively disposed at the bottom of the two inclined support components;

[0009] Two tension springs are respectively embedded in the two inclined support components and are close to the top side of the inclined support components;

[0010] Two tension spring movable shafts are respectively movably disposed through the two inclined support components and are respectively connected to the two tension springs;

[0011] Two tension spring fixing pins are respectively connected to the tension spring on the side away from the movable axis of the tension spring; and

[0012] The two connecting rods are respectively connected to the movable shaft of the tension spring;

[0013] When the connecting rod and the tension spring movable shaft are located at a preset first designated position, the two inclined support components are in a retracted state that brings them closer to each other.

[0014] Alternatively, when the connecting rod and the tension spring movable shaft are located at a preset second designated position, the two inclined support components are in an unfolded state that is far apart from each other.

[0015] Preferably, the mounting base has a number of mounting holes.

[0016] Preferably, the support component is provided with an L-shaped slot for the tension spring movable shaft to pass through, the L-shaped slot is located above the rotating component, and the tension spring fixing pin is provided above the L-shaped slot.

[0017] Preferably, the two inclined support components are arranged in a cross shape via the rotating component.

[0018] To achieve the above objectives, according to another aspect of this application, a folding chair is also provided.

[0019] The folding chair according to this application includes the cross-support structure as described above;

[0020] It also includes: two mounting sleeves, which are respectively connected to the two mounting bases and the cross support structure, and a cushion is provided between the two mounting sleeves;

[0021] Specifically, by pulling up or lowering the seat cushion, the cross-support structure is brought together or unfolded.

[0022] Preferably, the two rotating connectors are respectively provided with handrail support structures facing each other;

[0023] The handrail support structure includes: a foot support connected to the rotating connector, with a handrail tube and a back support tube respectively provided at both ends of the foot support, a pipe connector provided between the handrail tube and the back support tube, and a limit fixing seat provided on the pipe connector and on the side closer to the support component, the limit fixing seat being connected to the connecting rod.

[0024] Preferably, a backrest is detachably fitted on the back support tube and near its top, a tube decoration is provided on the top of the back support tube, a decorative panel is provided on the top of the handrail tube, and a fixing strap connected to the limiting fixing seat is also provided between the handrail tubes.

[0025] Preferably, there are two fixing straps, which are respectively arranged in parallel on the top of the limiting fixing seat.

[0026] Preferably, the foot support is also provided with an annular hoop for limiting the rotational connector.

[0027] Preferably, limiting members are provided at both ends of the mounting base.

[0028] Beneficial effects: In this embodiment, a single-fork support is adopted. When the connecting rod and the movable shaft of the tension spring are at a preset first designated position, the two inclined support components are in a retracted state that is close to each other; or, when the connecting rod and the movable shaft of the tension spring are at a preset second designated position, the two inclined support components are in an extended state that is far apart from each other. This achieves the purpose of retraction or extension, thereby realizing the technical effects of structural stability, ease of use and portability. It also solves the problems of existing double-fork chairs being incompatible with indoor furniture in terms of appearance and use, making them unsuitable for indoor use. At the same time, although the double-fork structure can bring relatively stable chair function, there is a risk of the connecting rod getting close to the sides and pinching hands when folding, which is also unsuitable for home use. In addition, although there are single-fork type chairs on the market, their overall structural stability is relatively weak. Attached Figure Description

[0029] Figure 1 This is an exploded schematic diagram of the folding chair of this utility model;

[0030] Figure 2 This is a three-dimensional structural diagram of the cross-support structure of this utility model;

[0031] Figure 3 This is a schematic diagram of the armrest structure of the folding chair of this utility model;

[0032] Figure 4 This is a schematic diagram of the unfolded structure of the folding chair of this utility model; and

[0033] Figure 5 This is a schematic diagram of the folding chair in its folded state according to this utility model.

[0034] The attached figures are labeled as follows:

[0035] 1. Fixing strap;

[0036] 2. Pipe decorative parts;

[0037] 3. Decorative panels;

[0038] 4. Tension spring;

[0039] 5. Seat cushion;

[0040] 6. Mounting bracket;

[0041] 7. Connecting rod;

[0042] 8. Handrail tube;

[0043] 9. Support components;

[0044] 10. Foundation support;

[0045] 11. Ring hoop;

[0046] 12. Rotary connector;

[0047] 13. Back ventricular tube;

[0048] 14. Limiting components;

[0049] 15. Cross-bracing structure;

[0050] 16. Install the sleeve;

[0051] 17. Tension spring movable shaft;

[0052] 18. Tension spring retaining pin;

[0053] 19. Rotating parts;

[0054] 20. Pipe fittings;

[0055] 21. Limiting and fixing seat. Detailed Implementation

[0056] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0057] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0058] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0059] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0060] like Figure 1-5 As shown, this application relates to a cross-support structure and a folding chair. Figure 1-3 As shown, the cross-bracing structure includes two obliquely arranged support components 9. These two obliquely arranged support components 9, as the main components of the support structure, are obliquely arranged and symmetrically laid out, achieving a good symmetrical support effect and thus ensuring good structural stability. In this application, the support component 9 can be a support rod.

[0061] A rotating component 19 is inserted at the middle position of the two inclined support components 9; it can connect and adjust the relative angle of the two support components 9; at the same time, it can also make the two inclined support components 9 rotate along it, thereby ensuring that the two inclined support components 9 move closer or further apart in a set manner.

[0062] Two mounting bases 6 are respectively set on the top of the two inclined support components 9; they can achieve good installation and fixing effects, thereby ensuring structural stability and good cooperation between components.

[0063] Two rotating connectors 12 are respectively disposed at the bottom of the two inclined support components 9; the two support components 9 are linked with other components through the rotating connection; the rotating connectors 12 allow the support components 9 to rotate within a preset angle range, ensuring the flexibility of the support structure under different working conditions.

[0064] Two tension springs 4 are respectively embedded in the two inclined support components 9 and close to the top side of the inclined support component 9. The tension springs 4 play a role in helping the support component 9 to unfold and retract through elasticity. Embedding the tension springs 4 in the inclined support component 9 and close to the top side enables it to provide the necessary elastic force in a specific state, so that the support component 9 has a certain force when unfolding and retracting, ensuring structural stability.

[0065] Two spring-loaded movable shafts 17 are movably disposed through the two inclined support members 9 and are respectively connected to the two springs 4. By passing the two spring-loaded movable shafts 17 through the inclined support members 9 and moving along a preset trajectory on the support members 9, the springs 4 are connected to other components. As a key element of elastic extension and contraction, the spring-loaded movable shafts 17 can push or restrict the relative position of the support members 9 when they are in a specific position.

[0066] Two tension spring fixing pins 18 are respectively connected to the tension spring 4 on the side away from the tension spring movable shaft 17; they can fix the other end of the tension spring 4 at a designated position of the inclined support member 9; when the tension spring movable shaft 17 is in the preset position, the fixing pins play the role of fixing the relative position of the tension spring 4, thereby ensuring that the elastic force of the tension spring 4 plays an appropriate role in the whole structure.

[0067] The two connecting rods 7 are respectively connected to the movable shaft 17 of the tension spring; they can achieve a good connection effect, thereby ensuring a good transmission effect between the components.

[0068] Among them, such as Figure 4-5 As shown, when the connecting rod 7 and the tension spring movable shaft 17 are located at a preset first designated position, the two inclined support components 9 are in a retracted state that brings them closer to each other.

[0069] Alternatively, when the connecting rod 7 and the tension spring movable shaft 17 are located at a preset second designated position, the two inclined support components 9 are in an unfolded state that is far apart from each other.

[0070] Specifically, in the retracted state (first designated position): when the connecting rod 7 and the spring movable shaft 17 are in the preset retracted position, the elasticity of the spring 4 will cause the two inclined support components 9 to move closer to each other, thereby achieving the effect of easy storage, carrying and reducing space occupation.

[0071] Deployed state (second designated position): When the connecting rod 7 and the spring movable shaft 17 are in the preset deployed position, the spring 4 applies elastic force to the two inclined support members 9, causing them to separate and achieve the deployed state; it can be used for support, bracket or other functional applications.

[0072] As can be seen from the above description, this application achieves the following technical effects:

[0073] In this embodiment, a single-fork support is used. When the connecting rod 7 and the tension spring movable shaft 17 are at a preset first designated position, the two inclined support components 9 are in a retracted state that is close to each other; or, when the connecting rod 7 and the tension spring movable shaft 17 are at a preset second designated position, the two inclined support components 9 are in an extended state that is far apart from each other. This achieves the purpose of retraction or extension, thereby realizing the technical effects of structural stability, ease of use and portability. It also solves the problems of existing double-fork chairs being incompatible with indoor furniture in terms of appearance and use, making them unsuitable for indoor use. At the same time, although the double-fork structure can bring relatively stable chair function, there is a risk of the connecting rod 7 being close to the sides and pinching hands when folded up, which is also unsuitable for home use. In addition, although there are single-fork type chairs on the market, their overall structural stability is relatively weak.

[0074] Furthermore, the mounting base 6 is pre-drilled with several mounting holes. This is to facilitate subsequent assembly. Of course, the number and location of the mounting holes need to be determined based on the actual application to ensure structural stability and convenient assembly.

[0075] Furthermore, the support member 9 is provided with an L-shaped slot for the tension spring movable shaft 17 to pass through. The L-shaped slot is located above the rotating member 19, and the tension spring fixing pin 18 is provided above the L-shaped slot. It is understood that this allows the tension spring movable shaft 17 to pass through and move, thereby ensuring that the tension spring 4 can be flexibly connected to the support member 9 and can extend and retract unrestricted along a preset trajectory.

[0076] The "L"-shaped slot restricts the angle of the connecting rod 7, which helps to stabilize and reduce the storage angle.

[0077] The function of the fixing pin is to firmly connect one end of the tension spring 4 to the support component 9, so as to prevent the tension spring 4 from falling off or shifting its position during operation.

[0078] Furthermore, the two inclined support members 9 are arranged in a cross shape via the rotating member 19. It is understood that this can improve the stability of the support structure, especially when supporting or bearing loads, the cross arrangement can make the force distribution more uniform and reduce possible local stress concentration.

[0079] This application also relates to a folding chair, including the cross support structure 15 as described above;

[0080] It also includes: two mounting sleeves 16, which are respectively connected to the two mounting bases 6 and the cross support structure 15, and a cushion 5 is provided between the two mounting sleeves 16;

[0081] Specifically, by pulling up or lowering the seat cushion 5, the cross support structure 15 is brought together or extended.

[0082] Specifically, the cross-support structure 15, as the core support component of the chair, is responsible for providing overall stability and support.

[0083] Mounting sleeves 16 are used to connect the cross support structure 15 to the mounting base 6; the mounting sleeves 16 at both ends connect the cross support structure 15 to the chair frame, ensuring that the chair maintains stability and support during use.

[0084] The seat cushion 5 is located between the two mounting sleeves 16. The up and down movement of the seat cushion 5 will directly drive the cross support structure 15 to unfold and retract, thus giving the chair a convenient folding and unfolding function.

[0085] The armrests can be folded inwards by lifting the seat cushion 5 soft padding to achieve storage; opening the armrests easily turns the seat into a seat; and the backrest can be adjusted to achieve an adjustable sitting posture by adding adjustment parts.

[0086] Preferably, the seat cushion 5 is made of soft padding, which can achieve a comfortable seating effect.

[0087] Furthermore, each of the two rotating connectors 12 is provided with a handrail support structure facing each other;

[0088] The armrest support structure includes: a base support 10 connected to the rotating connector 12; armrest tubes 8 and back support tubes 13 are respectively provided at both ends of the base support 10; a pipe connector 20 is provided between the armrest tubes 8 and the back support tubes 13; a limiting fixing seat 21 is provided on the pipe connector 20, near the support component 9, and the limiting fixing seat 21 is connected to the connecting rod 7. It is understood that this achieves good armrest support, connection, and limiting fixing effects, while being tightly connected to the overall structure of the chair, enhancing the overall stability and support of the chair.

[0089] The pipe connector 20 serves to connect the handrail pipe 8 and the back support pipe 13, providing necessary structural support for the handrail support structure, and is able to withstand the pressure during use and maintain structural stability.

[0090] The limiting and fixing seat 21, located on the pipe connector 20 and near the support member 9, provides a positioning and fixing function. The limiting and fixing seat 21 is connected to the connecting rod 7, ensuring that the handrail support structure maintains the correct position during operation and preventing loosening or displacement. Preferably, there are two limiting and fixing seats 21, ensuring good limiting and fixing effects.

[0091] Furthermore, a backrest is detachably fitted onto the back support tube 13 near its top. A decorative tube 2 is provided at the top of the back support tube 13, and a decorative panel 3 is provided at the top of the armrest tube 8. A fixing strap 1 connected to the limiting fixing seat 21 is also provided between the armrest tubes 8. It is understood that this achieves both good decorative and structural stability. Preferably, the fixing strap 1 is a reinforcing fixing strap.

[0092] Specifically, the backrest is detachably mounted on the top of the back support tube 13, which allows the chair to be easily removed when not in use, reducing storage space; the installation position of the backrest makes the chair more comfortable to use and provides sufficient back support.

[0093] The top of the back support tube 13 is decorated with a tube decoration piece 2, while the top of the armrest tube 8 is decorated with a decorative panel 3; this not only enhances the aesthetics of the chair, but also further reinforces the tubes, making the armrests and backrest more robust and visually unified.

[0094] Preferably, the backrest is made of soft padding; it can be easily removed by means of fastening under the hook and loop fasteners, including but not limited to.

[0095] Furthermore, there are two fixing straps 1, which are respectively arranged parallel to each other on the top of the limiting fixing seat 21. It can be understood that this can further fix and support the handrail support structure, ensure the tight connection between the handrail tube 8, the back support tube 13 and the limiting fixing seat 21; enhance the stability of the structure and prevent the handrail from loosening or shifting due to external forces.

[0096] Furthermore, the foot support 10 is also provided with an annular clamp 11 for limiting the rotational connector 12. This prevents the rotational connector 12 from excessively rotating or shifting position, ensuring the chair's structure maintains its correct working condition.

[0097] Furthermore, limiting members 14 are respectively provided at both ends of the mounting base 6. It can be understood that this can achieve a good limiting and fixing effect.

[0098] This utility model also has the following beneficial effects:

[0099] 1. The chair in this application can be used as a regular and comfortable indoor chair for daily use, as well as for outdoor use. It has the characteristics of small space occupation, easy storage and portability.

[0100] 2. As a seat for daily use, it is both economical and practical, without wasting resources;

[0101] 3. It features small storage volume, low logistics costs, convenient use, safety and aesthetics. It can be used as a comfortable leisure chair for daily life, as well as a multifunctional home product that is easy to carry for outdoor and camping activities.

[0102] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A cross-bracing structure, characterized in that, include: Support components are installed on both sides at an angle; A rotating component is inserted at the middle position of the two inclined support components; Two mounting bases are respectively disposed on the top of the two inclined support components; Two rotating connectors are respectively disposed at the bottom of the two inclined support components; Two tension springs are respectively embedded in the two inclined support components and are close to the top side of the inclined support components; Two tension spring movable shafts are respectively movably disposed through the two inclined support components and are respectively connected to the two tension springs; Two tension spring fixing pins are respectively connected to the tension spring on the side away from the movable axis of the tension spring; and The two connecting rods are respectively connected to the movable shaft of the tension spring; When the connecting rod and the tension spring movable shaft are located at a preset first designated position, the two inclined support components are in a retracted state that brings them closer to each other. Alternatively, when the connecting rod and the tension spring movable shaft are located at a preset second designated position, the two inclined support components are in an unfolded state that is far apart from each other.

2. The cross-bracing structure according to claim 1, characterized in that, The mounting base has several mounting holes pre-set.

3. The cross-bracing structure according to claim 1, characterized in that, The support component is provided with an L-shaped slot for the tension spring movable shaft to pass through. The L-shaped slot is located above the rotating component, and the tension spring fixing pin is provided above the L-shaped slot.

4. The cross-bracing structure according to claim 1, characterized in that, The two inclined support components are arranged in a cross shape through the rotating component.

5. A folding chair, characterized in that, Including the cross-bracing structure as described in any one of claims 1-4; It also includes: two mounting sleeves, which are respectively connected to the two mounting bases and the cross support structure, and a cushion is provided between the two mounting sleeves; Specifically, by pulling up or lowering the seat cushion, the cross-support structure is brought together or unfolded.

6. The folding chair according to claim 5, characterized in that, Each of the two rotating connectors is provided with a handrail support structure opposite to it; The handrail support structure includes: a foot support connected to the rotating connector, with a handrail tube and a back support tube respectively provided at both ends of the foot support, a pipe connector provided between the handrail tube and the back support tube, and a limit fixing seat provided on the pipe connector and on the side closer to the support component, the limit fixing seat being connected to the connecting rod.

7. The folding chair according to claim 6, characterized in that, A backrest is detachably fitted onto the back support tube and near its top. A decorative tube is provided on the top of the back support tube, and a decorative panel is provided on the top of the handrail tube. A fixing strap connected to the limiting fixing seat is also provided between the handrail tubes.

8. The folding chair according to claim 7, characterized in that, The number of fixing straps is two, and the two fixing straps are respectively arranged in parallel on the top of the limiting fixing seat.

9. The folding chair according to claim 6, characterized in that, The foot support is also provided with an annular hoop for limiting the rotational connector.

10. The folding chair according to claim 5, characterized in that, Limiting elements are provided at both ends of the mounting base.

Images