Telescopic connecting metal pipe fitting for child seat

Abstract

The utility model relates to the technical field of child seats, and discloses a telescopic connecting metal pipe fitting for a child seat, which comprises an outer pipe pressure intensity adjusting device, a telescopic pipe inner rod is placed in the outer pipe pressure intensity adjusting device, an upper rotating bayonet lock device is fixed at the top of the telescopic pipe inner rod, and a lower rotating bayonet lock device is fixed at the bottom of the telescopic pipe inner rod. A lower clamping pin device is fixed to the bottom of the outer pipe pressure intensity adjusting device, the outer pipe pressure intensity adjusting device comprises a pressure intensity pipe fitting, a pressure intensity adjusting base is fixedly connected to the bottom of the pressure intensity pipe fitting, a pressure intensity adjusting knob is arranged in the middle of the front face of the pressure intensity adjusting base, a telescopic pipe piston rod is placed in the pressure intensity pipe fitting, and a telescopic pipe is arranged in the telescopic pipe piston rod. The telescopic pipe piston rod is completely attached to the interior of the pressure intensity pipe fitting. The pressure intensity adjusting device is arranged at the bottom of the telescopic pipe, the gas pressure intensity in the telescopic pipe is changed to change the length of the telescopic rod, and the problems that a user is difficult to adjust the telescopic rod due to friction force, and the adjusting length is not accurate are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of child seats, and more specifically to a telescopic connecting metal pipe for a child seat. Background Art

[0002] Child seats are a special seat designed specifically for infants and young children and are widely used. Child car safety seats are an important branch in the field of child seats. Improvements are made to the original child seat structure and are suitable for children of different weights and ages. Child car safety seats are installed in cars and have high requirements for the safety and stability of child seats. The existing child seats focus on the comfort of the seats and the appearance of the seats to attract parents and children, but do not give enough consideration to the safety and stability of the seats. In addition, the existing child seats use a combination of sliders and rails to adjust the seats, which may cause deformation of the connecting rods, severe surface wear, increased friction between pipes, jamming during adjustment, difficulty in adjustment, and difficulty in adjusting to the exact position. The loose connection reduces stability, thus affecting safety, and it is cumbersome for users to replace and disassemble. The damaged metal rods of traditional child seats need to be replaced as a whole, which increases user costs.

[0003] Therefore, in order to solve the above problems, it is necessary to provide a telescopic connecting metal pipe for a child seat. Utility Model Content

[0004] In order to overcome the above defects of the prior art, the utility model provides a retractable connecting metal pipe for a child seat to solve the problems existing in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a telescopic connecting metal pipe fitting for a child seat, comprising an outer tube pressure adjustment device, a telescopic tube inner rod is placed inside the outer tube pressure adjustment device, an upper rotating pin device is fixed to the top of the telescopic tube inner rod, and a lower pin device is fixed to the bottom of the outer tube pressure adjustment device.

[0006] Furthermore, the outer tube pressure regulating device comprises a pressure pipe fitting, the bottom of which is fixedly connected to a pressure regulating base, and a pressure regulating knob is provided in the middle of the front side of the pressure regulating base.

[0007] Furthermore, a telescopic tube piston rod is placed inside the pressure pipe fitting, the telescopic tube piston rod is completely fitted with the inside of the pressure pipe fitting, a piston connecting block is fixed to the bottom of the telescopic tube piston rod, and a rubber piston is fixedly connected to the bottom of the piston connecting block.

[0008] Furthermore, the lower bayonet device comprises a lower bayonet tube, and a curved bayonet is provided in the middle of the outer side of the lower bayonet tube.

[0009] Furthermore, the upper rotating bayonet device comprises a bayonet outer tube, a rotating knob is provided in the middle of the outer side of the bayonet outer tube, a bayonet release block is fixedly connected to the top of the bayonet outer tube, and an upper bayonet device is provided inside the bayonet release block.

[0010] Furthermore, the bayonet outer tube comprises a bayonet outer tube fitting, and a bayonet outer tube square hole is provided in the middle of the outer portion of the bayonet outer tube fitting.

[0011] Furthermore, the rotating knob includes a knob outer part, and a knob latch square groove is provided in the middle of the inner side of the knob outer part.

[0012] Furthermore, the upper bayonet device includes an upper fixed bayonet, one end of the middle fixed guide curved tube on the back of the upper fixed bayonet is fixedly connected to a drainage straight tube, the drainage straight tube is fixedly connected to a flexible extension rod, one end of the flexible extension rod is fixedly connected to an upper rotating bayonet outer fastener, a return spring is provided on the back of the upper rotating bayonet outer fastener, a return spring shell is provided on the periphery of the return spring, the back of the return spring shell is fixedly connected to a drainage curved tube, one end of the drainage is fixedly connected to the drainage curved tube, and both ends of the drainage straight tube are fixedly connected to the drainage curved tube.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model provides a pressure regulating device at the bottom of the telescopic tube to change the gas pressure in the telescopic tube to change the length of the telescopic rod, which is conducive to solving the problem of difficulty in adjustment and inaccurate length adjustment caused by friction of the telescopic rod.

[0015] 2. The utility model increases the friction between the inner wall of the telescopic rod and the inner telescopic rod by providing a rubber plug at the bottom of the inner telescopic rod, which is beneficial to improving the stability and safety of the telescopic tube.

[0016] 3. The utility model fixes the seat by providing rotating bayonet connection devices at both ends of the telescopic connection metal pipe fitting, which is beneficial to improving the flexibility and convenience of disassembly of the telescopic connection metal pipe fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the inner rod structure of the connecting pipe fitting of the utility model;

[0019] Figure 3 This is a schematic diagram of the outer tube structure of the connecting pipe fitting of the utility model;

[0020] Figure 4This is a schematic diagram of the structure of the upper rotating bayonet device of the utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the upper bayonet of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the lower rotating latch device of the utility model.

[0023] Figure 7 This is a schematic diagram of the structure of the upper rotating knob of the utility model.

[0024] Figure 8 It is a schematic diagram of the external structure of the upper bayonet of the utility model.

[0025] The accompanying drawings are marked as follows: 1. outer tube pressure regulating device; 101. pressure pipe fitting; 102. pressure regulating base; 103. pressure regulating knob; 2. telescopic tube inner rod; 201. telescopic tube piston rod; 202. piston connecting block; 203. rubber piston; 3. lower bayonet device; 301. lower bayonet tube; 302. curved bayonet; 4. upper rotating bayonet device; 401. bayonet outer tube; 4011. bayonet outer tube Parts; 4012, square hole of the outer tube of the bayonet; 402, rotating knob; 4021, knob outer part; 4022, square groove of the knob bayonet; 403, bayonet release block; 404, upper bayonet device; 4041, upper fixed bayonet; 4042, straight pipe for drainage; 4043, flexible extension rod; 4044, return spring; 4045, return spring housing; 4046, upper rotating bayonet outer block; 4047, curved pipe for drainage. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The telescopic connecting metal pipe for a child seat involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0027] Reference Figures 1 to 8 The utility model provides a telescopic connecting metal pipe fitting for a child seat, including an outer tube pressure regulating device 1, wherein a telescopic tube inner rod 2 is placed inside the outer tube pressure regulating device 1, an upper rotating bayonet device 4 is fixed to the top of the telescopic tube inner rod 2, and a lower bayonet device 3 is fixed to the bottom of the outer tube pressure regulating device 1.

[0028] In a preferred embodiment, the outer tube pressure regulating device 1 comprises a pressure pipe fitting 101 , the bottom of the pressure pipe fitting 101 is fixedly connected to a pressure regulating base 102 , and a pressure regulating knob 103 is provided in the middle of the front side of the pressure regulating base 102 .

[0029] In a preferred embodiment, a telescopic tube piston rod 201 is placed inside the pressure tube fitting 101, and the telescopic tube piston rod 201 is completely fitted with the inside of the pressure tube fitting 101. A piston connecting block 202 is fixed to the bottom of the telescopic tube piston rod 201, and a rubber piston 203 is fixedly connected to the bottom of the piston connecting block 202.

[0030] In a preferred embodiment, the lower bayonet device 3 comprises a lower bayonet tube 301 , and a curved bayonet 302 is provided in the middle of the outer side of the lower bayonet tube 301 .

[0031] In a preferred embodiment, the upper rotating pin device 4 includes a pin outer tube 401, a rotating knob 402 is provided in the middle of the outer side of the pin outer tube 401, a pin release block 403 is fixedly connected to the top of the pin outer tube 401, and an upper pin device 404 is provided inside the pin release block 403.

[0032] In a preferred embodiment, the bayonet outer tube 401 comprises a bayonet outer tube fitting 4011 , and a bayonet outer tube square hole 4012 is provided in the middle of the outer portion of the bayonet outer tube fitting 4011 .

[0033] In a preferred embodiment, the rotating knob 402 includes a knob outer part 4021 , and a knob latch square groove 4022 is provided in the middle of the inner side of the knob outer part 4021 .

[0034] In a preferred embodiment, the upper pin device 404 includes an upper fixed pin 4041, a flexible extension rod 4043 is fixedly connected to the middle of the back side of the upper fixed pin 4041, one end of the flexible extension rod 4043 is fixedly connected to the upper rotating pin outer block 4046, a return spring 4044 is provided on the back side of the upper rotating pin outer block 4046, a return spring housing 4045 is provided on the periphery of the return spring 4044, a drainage curved pipe 4047 is fixedly connected to the back side of the return spring housing 4045, one end of the drainage curved pipe 4047 is fixedly connected to the drainage straight pipe 4042, one end of the drainage straight pipe 4042 is fixedly connected to the drainage curved pipe 4047, and both ends of the drainage straight pipe 4042 are fixedly connected to the drainage curved pipe 4047.

[0035] The working principle of the utility model is as follows: first, place the telescopic metal pipe fitting into the corresponding position of the seat according to the curved stripe bayonet 302 of the lower bayonet device 3, rotate the lower bayonet device 3, the curved stripe bayonet 302 is stuck in the corresponding position and fixed, put the upper rotating bayonet device 4 into the corresponding position, twist and rotate the knob 402, the knob outer part 4021 will squeeze the upper rotating bayonet outer part in the knob bayonet square groove 4022 into the bayonet outer tube square hole 4012 and squeeze the return spring 4044 in the return spring housing 4045, push the flexible extension rod 4043 in the dredging straight tube 4042 and the dredging curved tube 4047, the flexible extension rod 4043 pushes the upper fixed bayonet 4041, the upper fixed bayonet 4041 is pushed out of the bayonet release block 403, stuck in the corresponding bayonet groove and fixed, and the whole is telescopic. After the metal pipe fitting is installed, turn the pressure regulating knob 103 clockwise, and the pressure regulating base 102 releases gas into the pressure pipe fitting 101, the pressure in the pipe increases, and the pressure pushes the rod 2 inside the telescopic tube. When the appropriate length is adjusted, stop rotating the pressure regulating knob 103 immediately, the pressure in the pressure pipe fitting 101 is balanced, and the rod 2 inside the telescopic tube is in a fixed state under the action of pressure. When the length of the telescopic metal pipe fitting needs to be shortened, rotate the pressure regulating knob 103 counterclockwise, and the pressure regulating base 102 will draw out the gas in the pressure pipe fitting 101, the pressure in the pipe decreases, and the rod 2 inside the telescopic tube shrinks under the internal pressure. When the length is appropriate, stop rotating the pressure regulating knob 103 immediately, the pressure in the pressure pipe fitting 101 is balanced, and the rod 2 inside the telescopic tube is in a fixed state under the action of pressure.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A retractable metal pipe for a child seat, comprising an outer pipe pressure regulating device (1), characterized in that: The outer tube pressure regulating device (1) includes a telescopic tube inner rod (2) placed inside, an upper rotating bayonet device (4) fixed to the top of the telescopic tube inner rod (2), and a lower bayonet device (3) fixed to the bottom of the outer tube pressure regulating device (1).

2. The retractable metal pipe for a child seat according to claim 1, characterized in that: The outer tube pressure regulating device (1) comprises a pressure pipe fitting (101), the bottom of the pressure pipe fitting (101) is fixedly connected to a pressure regulating base (102), and a pressure regulating knob (103) is provided in the middle of the front side of the pressure regulating base (102).

3. The retractable metal pipe for a child seat according to claim 2, characterized in that: A telescopic tube piston rod (201) is placed inside the pressure tube fitting (101), and the telescopic tube piston rod (201) is completely fitted with the inside of the pressure tube fitting (101). A piston connecting block (202) is fixed to the bottom of the telescopic tube piston rod (201), and a rubber piston (203) is fixedly connected to the bottom of the piston connecting block (202).

4. The retractable metal pipe for a child seat according to claim 1, characterized in that: The lower bayonet device (3) comprises a lower bayonet tube (301), and a curved bayonet (302) is provided in the middle of the outer side of the lower bayonet tube (301).

5. The retractable metal pipe for a child seat according to claim 1, characterized in that: The upper rotating bayonet device (4) comprises a bayonet outer tube (401), a rotating knob (402) is provided in the middle of the outer side of the bayonet outer tube (401), a bayonet release block (403) is fixedly connected to the top of the bayonet outer tube (401), and an upper bayonet device (404) is provided inside the bayonet release block (403).

6. The retractable metal pipe for a child seat according to claim 5, characterized in that: The bayonet outer tube (401) comprises a bayonet outer tube fitting (4011), and a bayonet outer tube square hole (4012) is provided in the middle of the outer portion of the bayonet outer tube fitting (4011).

7. The retractable metal pipe for a child seat according to claim 5, characterized in that: The rotating knob (402) comprises a knob outer part (4021), and a knob latch square groove (4022) is provided in the middle of the inner side of the knob outer part (4021).

8. The retractable metal pipe for a child seat according to claim 5, characterized in that: The upper bayonet device (404) comprises an upper fixed bayonet (4041), a flexible extension rod (4043) is fixedly connected to the middle of the back side of the upper fixed bayonet (4041), one end of the flexible extension rod (4043) is fixedly connected to the upper rotating bayonet outer block (4046), a return spring (4044) is provided on the back side of the upper rotating bayonet outer block (4046), a return spring housing (4045) is provided on the periphery of the return spring (4044), a drainage curved pipe (4047) is fixedly connected to the back side of the return spring housing (4045), one end of the drainage curved pipe (4047) is fixedly connected to the drainage straight pipe (4042), one end of the drainage straight pipe (4042) is fixedly connected to the drainage curved pipe (4047), and both ends of the drainage straight pipe (4042) are fixedly connected to the drainage curved pipe (4047).

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