Lower supporting and blocking pipe mounting structure in handle chair framework

Abstract

The utility model provides a lower supporting and blocking pipe mounting structure in a handle chair framework, and belongs to the field of vehicle accessories. The problem that an existing framework is poor in stability is solved. According to the lower supporting and blocking pipe mounting structure in the handle chair framework, the handle chair framework comprises two side pipes which are symmetrically arranged left and right, the lower supporting and blocking pipe is horizontally arranged between the lower ends of the two side pipes, the two ends of the lower supporting and blocking pipe are horizontally arranged connecting sections, and the mounting structure comprises two connecting sections which are of flat square pipe structures; first inserting grooves and second inserting grooves horizontally penetrate through the two sides of the lower ends of the side pipes respectively, the two second inserting grooves are located between the two first inserting grooves, the first inserting grooves and the second inserting grooves are matched with the two ends of the connecting sections in shape and size respectively, the two ends of the connecting sections are clamped in the corresponding first inserting grooves and the corresponding second inserting grooves respectively, and the two ends of the connecting sections are fixedly connected with the corresponding side pipes in a welded mode. The lower supporting and blocking pipe mounting structure in the handle chair framework is stable in connection.

Description

Technical Field

[0001] The utility model belongs to the field of vehicle accessories and relates to a handlebar chair frame, in particular to a lower support pipe installation structure in the handlebar chair frame. Background Art

[0002] Handlebar chairs, as the name suggests, are seats with handles and are an important part of public transportation such as buses and trains.

[0003] The frame is an important component of the handlebar chair, and its structure is like a handlebar chair frame previously proposed by the applicant (application number: 201520600137.0), including a left side tube, a right side tube and a lower support tube, characterized in that a left curved tube bending inward is welded to the top of the left side tube, a right curved tube bending inward is welded to the top of the right side tube, an upper support plate is welded between the tops of the left curved tube and the right curved tube, and a seat belt mounting part is welded at the middle of the left curved tube and the right curved tube respectively, a left outer support plate is welded to the outer side from the middle to the bottom of the left side tube, and a left inner support plate is welded to the inner side from the middle to the bottom of the left side tube, a right outer support plate is welded to the outer side from the middle to the bottom of the right side tube, and a right inner support plate is welded to the inner side from the middle to the bottom of the right side tube, one end of the lower support tube is welded to the middle of the left inner support plate, and the other end of the lower support tube is welded to the middle of the right inner support plate.

[0004] In the above-mentioned chair frame, the lower support tubes are directly welded and fixed to the left inner support plate and the right inner support plate respectively, which easily leads to insufficient support strength for the lower support tubes and there is a risk of the lower support tubes falling off when they are under pressure. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and proposes a lower support pipe installation structure connected to a stable handlebar chair frame.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a lower support tube installation structure in a handlebar chair frame, the handlebar chair frame includes two side tubes symmetrically arranged on the left and right, the lower support tube is horizontally arranged between the lower ends of the two side tubes, and both ends of the lower support tube are horizontally arranged connecting sections. The installation structure includes the two above-mentioned connecting sections, which is characterized in that the connecting section is a flat square tube structure, and slot one and slot two are horizontally penetrated on both sides of the lower end of the side tube, respectively, the two slot twos are between the two slot ones, the shapes and sizes of slot one and slot two are respectively matched with the two ends of the connecting section, the two ends of the connecting section are respectively clamped in the corresponding slot one and the corresponding slot two, and the two ends of the connecting section are welded and fixed to the corresponding side tubes.

[0007] The connecting sections of the lower support tube are respectively clamped in the corresponding slot one and slot two, and both ends of the connecting section are welded and fixedly connected with the corresponding side tubes. This can not only effectively increase the connection contact area between the lower support tube and the side tube, so that the lower support tube can obtain stronger support, but also increase the welding area between the lower support tube and the side tube, so as to greatly enhance the positioning of the lower support tube and make the skeleton structure more stable.

[0008] In the installation structure of the lower support tube in the handlebar chair frame, the side tube is composed of a vertically distributed curved tube and a square tube, the square tube is vertically arranged, and the lower end of the curved tube is fixedly connected to the square tube; the slot 1 and the slot 2 are both arranged on the corresponding square tube. The slot 1 and the slot 2 are both arranged on the square tube, which is not only convenient for processing and forming, but also can ensure the strength of the square tube, ensure that it stably supports the lower support tube, and stably achieve the purpose of strengthening the positioning stability of the lower support tube.

[0009] In the lower support tube installation structure of the handlebar chair frame, the lower end of the bent tube is a vertically arranged straight tube portion, the upper end of the square tube extends upward to form a tubular connecting portion matching the straight tube portion, the straight tube portion is inserted tightly into the connecting portion and the two are welded and fixedly connected. The above design facilitates the connection between the bent tube and the square tube, and enhances the strength and stability of the side tube structure.

[0010] In the lower support tube installation structure of the handlebar chair frame, a straight strip-shaped deformation groove is provided on the side wall of the straight tube portion, the length of the deformation groove extends vertically, and the top and bottom of the deformation groove are open and closed respectively. The setting of the deformation groove can make the lower end of the bent tube more smoothly inserted into the connecting portion, further facilitating assembly.

[0011] In the lower support tube installation structure in the above-mentioned handlebar chair frame, the deformation groove is composed of groove one and groove two, both of which are straight strips. Groove one and groove two are connected, and the width of groove one is smaller than the width of groove two. There are multiple grooves one and two, and grooves one and grooves two are continuously and alternately distributed from top to bottom to further facilitate the installation of the bent pipe.

[0012] In the lower support pipe installation structure of the handlebar chair frame, the ends of the two connecting sections that are separated from each other are both constricted, and the width of the slot 2 is greater than the width of the slot 1. The above design can reduce the resistance encountered during the installation of the connecting section, making the entire assembly more convenient and easy.

[0013] Compared with the prior art, the lower support pipe installation structure in the handlebar chair frame has the following advantages:

[0014] 1. The connecting sections of the lower support tube are respectively clamped in the corresponding slot one and slot two, and both ends of the connecting section are welded and fixedly connected with the corresponding side tubes. This can not only effectively increase the connection contact area between the lower support tube and the side tube, so that the lower support tube can obtain stronger support, but also increase the welding area of ​​the lower support tube and the side tube, so as to greatly enhance the positioning of the lower support tube and make the skeleton structure more stable.

[0015] 2. Slot 1 and slot 2 are both set on the square tube, which is not only convenient for processing and forming, but also can ensure the strength of the square tube and ensure that it stably supports the lower support tube, so that the purpose of strengthening the positioning stability of the lower support tube can be stably achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the armchair frame.

[0017] Figure 2 yes Figure 1 A magnified schematic diagram of center A.

[0018] Figure 3 It is a cross-sectional schematic diagram of the armchair frame.

[0019] Figure 4 yes Figure 3 A magnified schematic diagram of point B in the middle.

[0020] In the figure, 1, side pipe; 1a, slot one; 1b, slot two; 1c, bent pipe; 1c1, straight pipe part; 1d, square pipe; 1d1, connecting part; 1e, deformation groove; 1e1, groove one; 1e2, groove two; 2, lower support pipe; 2a, connecting section. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] like Figure 1 As shown, the armchair frame includes two side tubes 1 symmetrically arranged on the left and right sides, and the lower ends of the side tubes 1 are arranged vertically. The lower support tube 2 is horizontally arranged between the lower ends of the two side tubes 1, and the length of the lower support tube 2 extends left and right, and both ends of the lower support tube 2 are horizontally arranged connecting sections 2a.

[0023] like Figure 3 and Figure 4 As shown, the lower support tube installation structure in the armchair frame includes the two above-mentioned connecting sections 2a. Specifically, the connecting section 2a is a flat square tube structure, and the two sides of the lower end of the side tube 1 are horizontally penetrated by a slot 1a and a slot 2 1b, and the two slots 1b are located between the two slots 1a. The shapes and sizes of the slot 1 1a and the slot 2 1b are respectively matched with the two ends of the connecting section 2a. The two ends of the connecting section 2a are respectively clamped in the corresponding slot 1 1a and the corresponding slot 2 1b, and the two ends of the connecting section 2a are welded and fixed to the corresponding side tube 1.

[0024] The connecting section 2a of the lower support tube 2 is respectively clamped in the corresponding slot 1a and slot 2 1b, and both ends of the connecting section 2a are welded and fixedly connected with the corresponding side tube 1. This can not only effectively increase the connection contact area between the lower support tube 2 and the side tube 1, so that the lower support tube 2 can obtain stronger support, but also increase the welding area between the lower support tube 2 and the side tube 1, so as to greatly enhance the positioning of the lower support tube 2 and make the skeleton structure more stable.

[0025] In this embodiment,

[0026] like Figure 1 and Figure 2 As shown, the structure of the side tube 1 is as follows: the side tube 1 is composed of a vertically distributed curved tube 1c and a square tube 1d, the square tube 1d is vertically arranged, and the lower end of the curved tube 1c is fixedly connected to the square tube 1d; the above-mentioned slot 1a and slot 2 1b are both arranged on the corresponding square tube 1d. The slot 1a and slot 2 1b are both arranged on the square tube 1d, which is not only convenient for processing and forming, but also can ensure the strength of the square tube 1d, ensure that it stably supports the lower support tube 2, so that the purpose of strengthening the positioning stability of the lower support tube 2 is stably achieved.

[0027] The connection method of the curved pipe 1c and the square pipe 1d is as follows: the lower end of the curved pipe 1c is a vertically arranged straight pipe portion 1c1, the upper end of the square pipe 1d extends upward to form a tubular connecting portion 1d1 matching the straight pipe portion 1c1, the straight pipe portion 1c1 is tightly inserted into the connecting portion 1d1 and the two are welded and fixedly connected. The above design facilitates the connection of the curved pipe 1c and the square pipe 1d, and enhances the structural strength and stability of the side pipe 1.

[0028] Further explanation, such as Figure 3 As shown, a straight strip-shaped deformation groove 1e is provided on the side wall of the straight tube portion 1c1. The deformation groove 1e extends vertically, and the top and bottom of the deformation groove 1e are open and closed respectively. The setting of the deformation groove 1e can make the lower end of the curved tube 1c more smoothly inserted into the connecting portion 1d1, further facilitating assembly. Furthermore, as Figure 1 As shown, the deformation groove 1e is composed of groove 1e1 and groove 2 1e2, both of which are straight strips. Groove 1e1 and groove 2 1e2 are connected, and the width of groove 1e1 is smaller than the width of groove 2 1e2. There are multiple grooves 1e1 and groove 2 1e2, and the number of groove 2 1e2 is one less than that of groove 1e1. Groove 1e1 and groove 2 1e2 are continuously and alternately distributed from top to bottom to further facilitate the installation of the bent pipe 1c.

[0029] In actual products, the ends of the two connecting sections 2a that are away from each other are both tapered, and the width of the slot 2 1b is greater than the width of the slot 1a, so as to reduce the resistance encountered by the connecting section 2a during installation, making the entire assembly more convenient and easy.

[0030] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A lower support tube installation structure in a handlebar chair frame, wherein the handlebar chair frame comprises two side tubes (1) arranged symmetrically on the left and right sides, the lower support tube (2) is horizontally arranged between the lower ends of the two side tubes (1), and both ends of the lower support tube (2) are horizontally arranged connecting sections (2a). The installation structure comprises the two connecting sections (2a) and is characterized in that: The connecting section (2a) is a flat square tube structure. A slot one (1a) and a slot two (1b) are horizontally penetrated on both sides of the lower end of the side tube (1). The two slots two (1b) are located between the two slots one (1a). The shapes and sizes of the slot one (1a) and the slot two (1b) are respectively matched with the two ends of the connecting section (2a). The two ends of the connecting section (2a) are respectively clamped in the corresponding slot one (1a) and the corresponding slot two (1b), and the two ends of the connecting section (2a) are welded and fixedly connected to the corresponding side tube (1).

2. The lower support pipe installation structure in the handlebar chair frame according to claim 1, characterized in that: The side tube (1) is composed of a vertically distributed curved tube (1c) and a square tube (1d); the square tube (1d) is vertically arranged, and the lower end of the curved tube (1c) is fixedly connected to the square tube (1d); the slot one (1a) and the slot two (1b) are both arranged on the corresponding square tube (1d).

3. The lower support pipe installation structure in the handlebar chair frame according to claim 2, characterized in that: The lower end of the curved tube (1c) is a vertically arranged straight tube portion (1c1), and the upper end of the square tube (1d) extends upward to form a tubular connecting portion (1d1) that matches the straight tube portion (1c1), the straight tube portion (1c1) is tightly inserted into the connecting portion (1d1), and the two are welded and fixedly connected.

4. The lower support pipe installation structure in the handlebar chair frame according to claim 3, characterized in that: A straight strip-shaped deformation groove (1e) is provided on the side wall of the straight tube portion (1c1); the deformation groove (1e) extends vertically, and the top and bottom of the deformation groove (1e) are respectively open and closed.

5. The lower support pipe installation structure in the handlebar chair frame according to claim 4, characterized in that: The deformation groove (1e) is composed of a groove one (1e1) and a groove two (1e2) both in the form of straight strips. The groove one (1e1) and the groove two (1e2) are connected, and the width of the groove one (1e1) is smaller than the width of the groove two (1e2). There are multiple grooves one (1e1) and two (1e2), and the grooves one (1e1) and two (1e2) are continuously and alternately distributed from top to bottom.

6. The lower support pipe installation structure in the handlebar chair frame according to claim 1, characterized in that: The ends of the two connecting sections (2a) that are separated from each other are both in a constricted shape, and the width of the second slot (1b) is greater than the width of the first slot (1a).

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