Stand chair with folding function

Abstract

The utility model discloses a stand chair with a folding function, which relates to the technical field of folding chairs and comprises a lower connecting rod, two ends of the lower connecting rod are connected with connecting seats C, and folding rods B are rotatably connected in the connecting seats C; the two ends of the upper connecting rod are connected with connecting bases A, folding rods A are rotationally connected into the connecting bases A, connecting bases B are arranged at the ends, away from the connecting bases A, of the folding rods A, and the folding rods A are connected with the ends, away from the connecting bases C, of the folding rods B through the connecting bases B; first supporting columns are symmetrically connected to the lower connecting rod, and ratchet wheel joints are connected to the ends, away from the lower connecting rod, of the first supporting columns. A connecting cross rod is connected to the upper connecting rod, and second supporting columns are symmetrically connected to the connecting cross rod. Due to the folding function of the stand chair, the stand chair can be effectively stored when not used, the occupied space is reduced, the stand chair is convenient to carry and store, and the requirement for flexible utilization of site space in different scenes is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of folding chair, specifically is a stand chair with folding function. BACKGROUND

[0002] In the modern fast-paced life, people's demand for personal leisure and convenience of travel is growing. Whether it is outdoor picnic, camping, fishing, or participating in various outdoor activities, temporary meeting, or short rest during daily commuting and travel, a personal chair that is convenient to carry and can provide comfortable support is needed. However, the existing chair products on the market have many shortcomings in meeting the personal portable use needs.

[0003] Traditional chairs are large in size and fixed in structure, such as wooden or plastic chairs at home. Due to the limitations of shape and size, they are almost impossible to carry around, severely limiting their use scenarios. Even some chairs that are advertised as portable have exposed many problems in actual use.

[0004] Some portable chairs are easy to carry, but folding chairs with multi-component combination structure need to be disassembled and stored one by one when folding. Not only is the process complicated, but also the components are easy to lose or damage during repeated operation.

[0005] Therefore, the present application is proposed. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a stand chair with folding function to solve the problems in the background art.

[0007] To solve the above technical problems, the utility model provides a stand chair with folding function, which comprises:

[0008] A lower connecting rod, both ends of which are connected with a connecting seat C, and a folding rod B is rotatably connected inside the connecting seat C;

[0009] An upper connecting rod, both ends of which are connected with a connecting seat A, and a folding rod A is rotatably connected inside the connecting seat A, the end of the folding rod A away from the connecting seat A is provided with a connecting seat B, and the folding rod A is connected with the folding rod B away from the connecting seat C through the connecting seat B;

[0010] Among them, a first support column is symmetrically connected on the lower connecting rod, and a ratchet joint is connected at the end of the first support column away from the lower connecting rod; a connecting cross bar is connected on the upper connecting rod, and a second support column is symmetrically connected on the connecting cross bar, and the end of the second support column away from the connecting cross bar is connected with the ratchet joint.

[0011] Further, the first support column is fixedly connected with a barrel seat on the outer wall of the lower connecting rod, the barrel seat is inserted with a movable rod, one end of the movable rod extending out of the barrel seat is connected with a nut, a torsion spring is connected on the outer wall of the barrel seat inserted with the movable rod, one end of the torsion spring abuts against the inner wall of the barrel seat, and the other end of the barrel seat is connected with the movable rod.

[0012] Further, the barrel seat is connected with the first support column through the self-tapping screw.

[0013] Further, the folding rod A and the folding rod B are both square tube structures, and the lengths of the folding rod A and the folding rod B are the same.

[0014] Further, the connecting horizontal rod and the middle part of the upper connecting rod are both curved structures, so that the backrest groove is formed on the connecting horizontal rod and the upper connecting rod.

[0015] Further, the two end parts of the lower connecting rod are bent in the same direction, and the connecting seat C is connected with the end part of the lower connecting rod after being bent.

[0016] Further, the two end parts of the upper connecting rod are bent in the same direction, and the bending angle of the upper connecting rod is the same as that of the lower connecting rod, and the connecting seat A is connected with the end part of the upper connecting rod after being bent.

[0017] Further, the two first support columns are connected with a reinforcing pipe on the opposite sides, and the reinforcing pipe is a U-shaped pipe structure.

[0018] Compared with the prior art, the stand chair has the advantages that:

[0019] The stand chair mainly comprises a lower connecting rod, an upper connecting rod, a folding rod A, a folding rod B and a connecting seat, and the frame is foldable, the connecting mode enables the folding rod A and the folding rod B to rotate around the connecting seat to drive the relative movement of the upper and lower connecting rods during folding and unfolding, the first support column symmetrically connected on the lower connecting rod is connected with the second support column connected with the upper connecting rod through the connecting horizontal rod through the ratchet joint on the top, the support column is adjusted in position in cooperation with the ratchet joint during folding, and stable support is provided for the stand chair after unfolding. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the unfolded state of the utility model;

[0021] Figure 2 It is a rear view structural schematic diagram of the unfolded state of the utility model;

[0022] Figure 3The utility model discloses a state's structure schematic drawing of looking up of unfolding,

[0023] Figure 4 The utility model discloses a structure schematic drawing of unfolding state,

[0024] Figure 5 The utility model discloses a structure schematic drawing of movable part in the utility model,

[0025] Figure 6 The utility model discloses an explosion structure schematic drawing of movable part in the utility model.

[0026] In the drawing: 1, first support column, 2, second support column, 3, ratchet joint, 4, connecting cross bar, 5, reinforcing pipe, 6, lower connecting rod, 7, upper connecting rod, 8, connecting seat A, 9, folding rod A, 10, connecting seat B, 11, folding rod B, 12, connecting seat C, 13, cylinder seat, 14, movable rod, 15, nut, 16, torsion spring. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be apparently and completely described in conjunction with the drawings of the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.

[0028] Please refer to Figures 1-6 The utility model provides a kind of technical scheme: a stand chair with folding function, comprising:

[0029] Lower connecting rod 6, both ends are connected with connecting seat C12, and connecting seat C12 is rotatably connected with folding rod B11 inside;

[0030] Upper connecting rod 7, both ends are connected with connecting seat A8, and connecting seat A8 is rotatably connected with folding rod A9 inside, and the end portion of folding rod A9 away from connecting seat A8 is provided with connecting seat B10, and folding rod A9 is connected with the end of folding rod B11 away from connecting seat C12 by connecting seat B10;

[0031] Wherein, first support column 1 is connected to lower connecting rod 6 symmetrically, and ratchet joint 3 is connected to the end of first support column 1 away from lower connecting rod 6;Connecting cross bar 4 is connected to upper connecting rod 7, and second support column 2 is connected to connecting cross bar 4 symmetrically, and the end of second support column 2 away from connecting cross bar 4 is connected with ratchet joint 3.

[0032] Specifically, the connecting seat C12 at the two ends of the lower connecting rod 6 can rotate the folding rod B11, the connecting seat A8 at the two ends of the upper connecting rod 7 can rotate the folding rod A9, the folding rod A9 is connected with the folding rod B11 through the connecting seat B10 to form a movable frame structure, the first support column 1 is supported by the lower connecting rod 6, the ratchet joint 3 at the top of the first support column 1 is connected with the second support column 2 through the connecting cross rod 4 supported by the upper connecting rod 7, so that the whole stand chair structure is stable and the parts are related to each other, when folding is needed, the folding rod A9 and the folding rod B11 rotate around the connecting seat, driving the upper connecting rod 7, the lower connecting rod 6 and the related support structure to fold; the structure design realizes the folding function of the stand chair, which is convenient for storage and transportation. The connection mode of the folding rod A9, the folding rod B11 and the connecting rod makes the chair more flexible during unfolding and folding, and ensures the stability during use.

[0033] It should be noted that the main structure of the ratchet joint 3 generally includes a ratchet, a pawl and a spring, and the working principle is that when the second support column 2 is adjusted to the appropriate angle, the pawl is embedded in the tooth groove of the ratchet under the action of the spring, and due to the special cooperation of the pawl and the ratchet teeth, the pawl can only prevent the ratchet from rotating in one direction, so as to fix the backrest at the angle, prevent the backrest from being randomly changed due to external force or body weight, and realize the locking of the backrest angle.

[0034] The unlocking and adjusting principle is that when the backrest angle needs to be adjusted, the user needs to overcome the spring force and manually move the pawl to make it separate from the tooth groove of the ratchet.

[0035] Referring to Figures 3-6 A barrel seat 13 is fixedly connected to the outer wall of the first support column 1 close to one end of the lower connecting rod 6, a movable rod 14 is inserted into the barrel seat 13, a nut 15 is connected to the end of the movable rod 14 extending outward through the barrel seat 13, a torsion spring 16 is connected to the outer wall of the barrel seat 13 into which the movable rod 14 is inserted, one end of the torsion spring 16 abuts against the inner wall of the barrel seat 13, and the other end of the barrel seat 13 is connected to the movable rod 14.

[0036] Referring to Figure 3 and Figure 6 A self-tapping screw is arranged on the barrel seat 13, and the barrel seat 13 is connected to the outer wall of the first support column 1 through the self-tapping screw.

[0037] Referring to Figure 4 The folding rod A9 and the folding rod B11 are both square tube structures, and the lengths of the folding rod A9 and the folding rod B11 are the same.

[0038] Specifically, the folding rod A9 and the folding rod B11 are both square tube structures and have the same length, and form a handrail structure after folding, and the square tube structure provides good bending and torsional strength, and the same length makes the movement of the two side structures more symmetrical and coordinated during folding and unfolding.

[0039] The square tube structure ensures the strength of the folding rod, can withstand greater external force, and is not easy to deform. The same length design is beneficial to the stability of the overall structure of the chair and the smoothness of folding, and avoids folding difficulty or structural imbalance caused by the length difference of the two side folding rods.

[0040] Referring to Figure 1 The middle part of the connecting cross rod 4 and the upper connecting rod 7 is in a curved structure, so that the backrest groove is formed on the connecting cross rod 4 and the upper connecting rod 7.

[0041] Specifically, the middle part of the connecting cross rod 4 and the upper connecting rod 7 is in a curved structure to form a backrest groove, when the user leans on the chair back, the body curve fits the backrest groove.

[0042] The design of the backrest groove conforms to the principle of ergonomics, can provide better support for the back of the user, increase the comfort of the user, and make the user not easy to feel tired after a long time sitting.

[0043] Referring to Figure 4 The two end parts of the lower connecting rod 6 are bent in the same direction, and the connecting seat C12 is connected to the end part of the lower connecting rod 6 after bending; the two end parts of the upper connecting rod 7 are bent in the same direction, and the bending angle is the same as that of the lower connecting rod 6, and the connecting seat A8 is connected to the end part of the upper connecting rod 7 after bending.

[0044] Specifically, the bending angles of the upper connecting rod 7 and the lower connecting rod 6 are consistent, so that the folding rod A9 and the folding rod B11 are connected, and the overall structure is more symmetrical and coordinated when folding and unfolding.

[0045] It ensures the symmetry of the overall structure of the chair, is beneficial to improve the stability and aesthetics of the chair, and also makes the folding and unfolding operation more smooth, avoids structural disorder caused by the inconsistent bending angles of the upper connecting rod 7 and the lower connecting rod 6.

[0046] Referring to Figure 1 The opposite sides of the two first support columns 1 are commonly connected with the reinforcing pipe 5, and the reinforcing pipe 5 is in a U-shaped pipe structure.

[0047] Specifically, the connection strength between the two first support columns 1 is enhanced, and when the chair is subjected to external force, the force can be shared and transmitted together, reducing the stress of a single support column; the setting of the reinforcing pipe 5 significantly improves the strength and stability of the bottom support structure of the chair, so that the chair can withstand greater weight and external force, prolong the service life of the chair, and also improve the safety of the user.

[0048] As described above, although the utility model has been shown and described with reference to specific preferred embodiments, it should not be interpreted as a limitation of the utility model itself. Various changes can be made to the form and details of the utility model without departing from the spirit and scope of the utility model defined in the appended claims.

Claims

1. A folding grandstand chair, characterized in that, The utility model relates to a kind of foldable folding bed, including: Lower connecting rod (6), both ends are connected with connecting seat C (12), the connecting seat C (12) is rotatably connected with folding rod B (11) inside; Upper connecting rod (7), both ends are connected with connecting seat A (8), the connecting seat A (8) is rotatably connected with folding rod A (9) inside, the end of the folding rod A (9) away from connecting seat A (8) is provided with connecting seat B (10), and the folding rod A (9) is connected with the end of folding rod B (11) away from connecting seat C (12) by connecting seat B (10); Wherein, the first support column (1) is symmetrically connected on the lower connecting rod (6), and the ratchet joint (3) is connected at the end of the first support column (1) away from the lower connecting rod (6);Connecting rod (7) is connected with connecting cross bar (4) on the upper connecting rod (7), the second support column (2) is symmetrically connected on the connecting cross bar (4), and the end of the second support column (2) away from the connecting cross bar (4) is connected with the ratchet joint (3).

2. A folding stand seat according to claim 1, wherein: The outer wall of the first support column (1) close to the end of the lower connecting rod (6) is fixedly connected with the barrel seat (13), the barrel seat (13) is inserted with the movable rod (14) inside, one end of the movable rod (14) extending outward through the barrel seat (13) is connected with the nut (15), the outer wall of the barrel seat (13) is connected with the torsion spring (16) that the movable rod (14) is inserted in the inside, one end of the torsion spring (16) abuts against the inner wall of the barrel seat (13), and the other end of the barrel seat (13) is connected on the movable rod (14).

3. A folding stand seat as claimed in claim 2, wherein: The barrel seat (13) is provided with self-tapping screw, and the barrel seat (13) is connected with the outer wall of the first support column (1) by automatic screw.

4. The folding bleacher chair of claim 1, wherein: The folding rod A (9) and the folding rod B (11) are square tube structures, and the lengths of the folding rod A (9) and the folding rod B (11) are same.

5. The folding bleacher chair of claim 1, wherein: The middle part of the connecting cross bar (4) and the upper connecting rod (7) are curved structure, so that the connecting cross bar (4) and the upper connecting rod (7) form backrest groove.

6. The folding bleacher chair of claim 1, wherein: The two end portions of the lower connecting rod (6) are bent in the same direction, and the connecting seat C (12) is connected at the end portion of the lower connecting rod (6) after bending.

7. The folding bleacher chair of claim 1, wherein: The two end portions of the upper connecting rod (7) are bent in the same direction, and the bending angle of the upper connecting rod (7) is same with the lower connecting rod (6), and the connecting seat A (8) is connected at the end portion of the upper connecting rod (7) after bending.

8. The folding bleacher chair of claim 1, wherein: The opposite sides of the two first support columns (1) are commonly connected with the reinforcing pipe (5), and the reinforcing pipe (5) is U-shaped tube structure.

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