Foldable standing structure

Abstract

The utility model relates to the technical field of folding supports, and particularly discloses a foldable standing structure which comprises a first supporting leg, a second supporting leg, a backrest rod, a connecting rod, a grab rail and the like. One end of the connecting rod is rotationally connected with the first supporting leg, and the other end is rotationally connected with the backrest rod; one end of the armrest rod is rotationally arranged in the connecting groove of the connecting part, and the other end is rotationally connected with the backrest rod; the upper end of the second supporting leg is rotationally connected to the inner side of the connecting part; wherein a locking part is fixedly arranged on the inner side of the connecting rod, a locking groove is formed in the side, close to the backrest rod, of the locking part, and a locking head is movably arranged at the end of the backrest rod. The device is provided with a foldable standing structure composed of the first supporting leg, the second supporting leg, the armrest rod, the connecting rod and the backrest rod which are rotationally connected, folding and storage are facilitated, in the unfolded state, due to the arrangement of the locking head and the locking groove, the unfolded state of the standing structure can be locked, and the stability and reliability of the structure are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of folding brackets, in particular to a foldable standing structure. Background Art

[0002] A foldable standing structure generally refers to a mechanical structure that is compactly designed, easy to carry and store, and can be quickly unfolded from a folded state to a stable standing state. This structure is widely used in a variety of products, including portable furniture, tents, parasols, and baby strollers.

[0003] For example, a Chinese utility model patent with publication number CN212556452U discloses a new type of foldable baby stroller, including a frame and a seat assembly connected to the frame, the frame including a front leg tube, a rear leg tube, a handle tube, a handle, a first curved tube, a second curved tube, a first locking assembly, a second locking assembly and an unlocking assembly, the top end of the handle tube is fixedly connected to the handle, the bottom end of the handle tube is rotatably connected to the top end of the first curved tube, the first curved tube is hinged to the rear leg tube, the top end of the second curved tube is hinged to the handle tube, and the bottom end of the second curved tube, the top end of the front leg tube and the top end of the rear leg tube are rotatably connected on the same rotating shaft.

[0004] It can be folded and stored, but the folding and unfolding operation process is relatively complicated, and the stability of the unfolded state is insufficient, especially when used as a baby carriage, it needs to have higher reliability. Utility Model Content

[0005] The technical problem solved by the utility model is that the folding and unfolding operation process of the existing folding structure is relatively complicated, and the stability of the unfolded state is insufficient.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A foldable standing structure comprising:

[0008] First leg;

[0009] A connecting rod, one end of which is rotatably connected to the first leg, and the other end of which is rotatably connected to the backrest rod;

[0010] A connecting portion, wherein the connecting portion is bent, one end of the connecting portion is fixedly connected to the first leg, and the other end of the connecting portion is provided with a connecting groove;

[0011] A handrail rod, one end of which is rotatably disposed in the connecting groove, and the other end of which is rotatably connected to the backrest rod;

[0012] a second leg, the upper end of which is rotatably connected to the inner side of the connecting portion;

[0013] Among them, a locking part is fixedly arranged on the inner side of the connecting rod, and the two locking parts are fixedly connected by a support cross beam. A locking groove is arranged on one side of the locking part close to the backrest rod, and a locking head is movably arranged at the end of the backrest rod.

[0014] In one aspect of the present utility model: a seat bracket is rotatably arranged between the two backrest rods.

[0015] In one aspect of the present utility model: a support rod is arranged between the seat bracket and the locking part, and the two ends of the support rod are respectively rotatably connected to the seat bracket and the locking part.

[0016] In one aspect of the present utility model: the support rod is divided into two sections, a compression spring is arranged between the two sections of the support rod, and a buffer sleeve is sleeved outside.

[0017] In one aspect of the present utility model: an adjusting handle is rotatably arranged at one end of the seat bracket away from the backrest rod.

[0018] In one aspect of the present utility model: the two first legs are fixedly connected by a cross bar.

[0019] In one aspect of the present utility model: a footrest is arranged between the two second legs.

[0020] In one aspect of the present utility model: a backrest connecting rod is arranged between the two backrest rods.

[0021] In one aspect of the present utility model: a first shielding frame and a second shielding frame are rotatably connected to one end of the backrest rod away from the locking head.

[0022] Advantages of the present utility model:

[0023] The device is provided with a foldable standing structure composed of rotatably connected first legs, second legs, armrest rods, connecting rods, and backrest rods, which can be widely used in products such as baby carriages or folding chairs. While being convenient for folding and storing, in the unfolded state, due to the locking head and the locking groove on the locking part cooperating with it, the unfolded state of the standing structure can be locked, ensuring the stability and reliability of the structure.

[0024] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0026] Figure 1 is a three-dimensional structural schematic diagram of the folding state of the present utility model;

[0027] Figure 2 is a side view structural schematic diagram of the folding state of the present utility model;

[0028] Figure 3 is a rear view structural schematic diagram of the folding state of the present utility model;

[0029] Figure 4 is a three-dimensional structural schematic diagram of the unfolded state of the present utility model;

[0030] Figure 5 is the present utility model Figure 4 a partial enlarged structural schematic diagram at position A;

[0031] Figure 6 is a side view structural schematic diagram of the unfolded state of the present utility model;

[0032] Figure 7 is a sectional structural schematic diagram of the unfolded state of the present utility model.

[0033] The reference numerals in the figures are: 1, the first leg; 2, the connecting rod; 3, the backrest rod; 4, the connecting part; 5, the armrest rod; 6, the second leg; 7, the locking part; 8, the locking head; 9, the support cross beam; 10, the seat bracket; 11, the support rod; 12, the buffer sleeve; 13, the adjusting handle; 14, the footrest; 15, the first shielding frame; 16, the second shielding frame. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0035] In the description of the present utility model, it should be understood that for the orientation description, such as the upper, lower, front, rear, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0036] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, while understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0037] Please refer to Figures 1-7 , the present utility model is a foldable standing structure, including a first leg 1, a second leg 6, a backrest rod 3, a connecting rod 2, an armrest rod 5, etc. The two sides of the standing structure can be symmetrically arranged, and a seat bracket 10 is arranged in the middle. Specifically, the following takes the unfolded state as an example for description. Among them, the first leg 1, the armrest rod 5, the connecting rod 2, and the backrest rod 3 form a four-bar linkage structure for folding and storage. In the unfolded state, the armrest rod 5, the first leg 1, the connecting rod 2, and the backrest rod 3 generally enclose to form a triangular structure.

[0038] Please refer to Figures 1-7 , in one embodiment of the present utility model, a bent connecting portion 4 is fixedly arranged at the upper end of the first leg 1, and the bent position of the connecting portion 4 can be arc-shaped. One end of the connecting portion 4 is fixedly connected to the first leg 1, and the upper end of the second leg 6 is rotatably connected to the inner side of the connecting portion 4; the first leg 1 and the second leg 6 form the leg support structure of the standing structure. The lower ends of the first leg 1 and the second leg 6 can be provided with a mobile wheel structure to form a folding baby stroller. Or a grounding structure can be arranged at the bottom end to form a folding chair. The two first legs 1 can be fixedly connected by a cross bar to form an integral body, moving synchronously and ensuring strength. A footrest 14 is arranged between the two second legs 6, and the two ends of the footrest 14 are respectively fixedly connected to the two second legs 6 to form an integral body, moving synchronously and ensuring strength, and at the same time can be used as a foot support structure.

[0039] Please refer to Figures 1-7, in one embodiment of the present utility model, the other end of the connecting portion 4 is provided with a connecting groove for connecting the armrest rod 5; one end of the armrest rod 5 protrudes and is rotatably arranged in the connecting groove, so as to be able to cooperate with the connecting groove to form a limit for the armrest rod 5 to rotate to the extreme position. The other end of the armrest rod 5 is rotatably connected to the backrest rod 3. One end of the connecting rod 2 is rotatably connected to the first leg 1, and the connection point is located at a position below the connecting portion 4. The other end is rotatably connected to the backrest rod 3; in the unfolded state, the connecting rod 2 and the backrest rod 3 are on the same straight line. The connection of the armrest rod 5 to the backrest rod 3 is above the connection point of the connecting rod 2. Wherein, a locking portion 7 is fixedly arranged inside the connecting rod 2, and the two locking portions 7 are fixedly connected by a support cross beam 9 to form an integral body. A locking groove is arranged on one side of the locking portion 7 close to the backrest rod 3, and a locking head 8 is movably arranged at the end of the backrest rod 3. In the unfolded state, the locking head 8 can extend into the locking groove to lock the standing structure of the present application in the standing state, so as to maintain stability. The locking head 8 can be slidably connected. Because it is arranged at the lower end and faces downward, it can be self-locked in the unfolded state under the action of gravity, or an elastic member can be arranged to provide elastic force to ensure the stable and reliable locking function.

[0040] Please refer to Figures 1-7 , in one embodiment of the present utility model, a seat bracket 10 is rotatably arranged between the two backrest rods 3. The seat bracket 10 may include a plurality of fixedly connected cross bars and vertical bars. One end of the main cross bar is rotatably connected to the lower end of the backrest rod 3. In the unfolded state, it can be used as the seat bracket 10 below, and in the folded state, it can be folded and stored. One end of the seat bracket 10 away from the backrest rod 3 may be rotatably provided with an adjustment handle 13. It is convenient to adjust the seat bracket 10 through the adjustment handle 13, and the angle can also be adjusted to extend the length of the seat bracket 10. A support rod 11 is arranged between the seat bracket 10 and the locking portion 7, and both ends of the support rod 11 are rotatably connected to the seat bracket 10 and the locking portion 7 respectively. Thus, it forms a support for the seat bracket 10 in the turned-open state and improves its bearing capacity. The support rod 11 is divided into two sections, a compression spring is arranged between the two sections of the support rod 11, and a buffer sleeve 12 is sleeved outside. By arranging the buffer sleeve 12 and the compression spring to form a buffer structure, the riding comfort of the position of the seat bracket 10 is improved.

[0041] Please refer to Figures 1-7, in one embodiment of the present utility model, a backrest link is provided between the two backrest rods 3 to fixedly connect the two backrest rods 3 and form a support at the backrest position. One end of the backrest rod 3 away from the locking head 8 is rotatably connected with a U-shaped first shielding frame 15 and a second shielding frame 16. A cylindrical structure may be provided at the upper end of the backrest rod 3 for rotatably connecting the first shielding frame 15 and the second shielding frame 16. In use, the first shielding frame 15 can be flipped upwards to be used as an armrest, or flipped forwards to form a fence. The second shielding frame 16 can be flipped above the seat bracket 10 to cooperate with a cloth curtain or other structures to form a shield for the baby for sunshading and the like. The rear side of the lower end of the backrest rod 3 can be rotatably connected with a moving rod, and a moving wheel is provided at one end of the moving rod away from the backrest rod 3. This moving rod can be used for the folding and storage of the moving wheel and the convenient movement of the device after rotational adjustment for support.

[0042] The above has described in detail one embodiment of the present utility model, but the content described is only the preferred embodiment of the present utility model and cannot be considered as used to limit the scope of implementation of the present utility model. All equal changes and improvements made according to the scope of application of the present utility model should still fall within the scope covered by the claims of the present utility model.

Claims

1. A foldable standing structure, characterized in that: include: First leg (1); A connecting rod (2), one end of the connecting rod (2) being rotatably connected to the first leg (1), and the other end of the connecting rod (2) being rotatably connected to the backrest rod (3); A connecting portion (4), wherein the connecting portion (4) is bent, one end of the connecting portion (4) is fixedly connected to the first leg (1), and the other end is provided with a connecting groove; A handrail rod (5), one end of which is rotatably disposed in the connection groove, and the other end of which is rotatably connected to the backrest rod (3); a second leg (6), the upper end of the second leg (6) being rotatably connected to the inner side of the connecting portion (4); A locking portion (7) is fixedly provided on the inner side of the connecting rod (2), the two locking portions (7) are fixedly connected via a supporting crossbeam (9), a locking groove is provided on a side of the locking portion (7) close to the backrest rod (3), and a locking head (8) is movably provided at the end of the backrest rod (3).

2. A foldable standing structure according to claim 1, characterized in that: A seat bracket (10) is rotatably arranged between the two backrest rods (3).

3. A foldable standing structure according to claim 2, characterized in that: A support rod (11) is arranged between the seat bracket (10) and the locking portion (7), and two ends of the support rod (11) are rotatably connected to the seat bracket (10) and the locking portion (7) respectively.

4. A foldable standing structure according to claim 3, characterized in that: The support rod (11) is divided into two sections, a compression spring is arranged between the two sections of the support rod (11), and a buffer sleeve (12) is sleeved on the outside.

5. A foldable standing structure according to claim 4, characterized in that: An adjustment handle (13) is rotatably provided at one end of the seat support (10) away from the backrest rod (3).

6. A foldable standing structure according to claim 5, characterized in that: The two first legs (1) are fixedly connected via a crossbar.

7. A foldable standing structure according to claim 6, characterized in that: A foot pedal (14) is arranged between the two second legs (6).

8. A foldable standing structure according to claim 7, characterized in that: A backrest connecting rod is arranged between the two backrest rods (3).

9. A foldable standing structure according to claim 8, characterized in that: One end of the backrest rod (3) away from the locking head (8) is rotatably connected to a first shielding frame (15) and a second shielding frame (16).

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