Height-adjustable child bicycle handrail

Abstract

The utility model relates to a height-adjustable child bicycle handrail, which belongs to the technical field of bicycles and comprises an adjusting cylinder, an adjusting box is fixed at the top of the adjusting cylinder, a handrail rod penetrating to the top of the adjusting box is movably mounted in the adjusting cylinder, and a height adjusting mechanism is arranged among the adjusting cylinder, the adjusting box and the handrail rod. The height adjusting mechanism comprises a rectangular box fixedly installed on the surface of the adjusting box. According to the height-adjustable child bicycle armrest, the height adjusting mechanism is arranged among the adjusting cylinder, the adjusting box and the armrest rod, so that the height of the armrest of a bicycle can be conveniently adjusted when the height-adjustable child bicycle armrest is used, a user can conveniently and synchronously adjust the height of the armrest according to the height of a seat, and the riding comfort of the user can be improved; the problems that in a bicycle in the prior art, only the height of a seat can be adjusted generally, the height of a corresponding armrest cannot be adjusted, only the height of the seat is adjusted, and a user feels uncomfortable in the riding process are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a height-adjustable children's bicycle handrail. Background Art

[0002] Children's bicycles are bicycles designed specifically for children, usually suitable for children between 3 and 12 years old. The frame, handlebars, seats and other parts of children's bicycles are designed according to the height and body shape of children to ensure that children can ride easily. Children's bicycles are usually equipped with safety guardrails, braking systems, stabilizer wheels and other safety facilities to ensure the safety of children when riding. Children's bicycles usually adopt a lightweight design to facilitate children's operation and control, and increase the fun of riding. Children's bicycles are generally designed with bright colors, cartoon patterns and other appearances that attract children and increase children's interest in riding.

[0003] Chinese patent CN211766074U discloses a height-adjustable children's bicycle, comprising a front tire and a rear tire, a first connecting shaft is provided on the front tire, a second connecting shaft is provided on the rear tire, connecting rods are provided at both ends of the first connecting shaft, an armrest adjusting device is provided on the connecting rod, the armrest adjusting device comprises a connecting sleeve, the connecting rod is fixed at the bottom of the connecting sleeve, a cavity is provided in the connecting sleeve, a threaded rod is movably provided in the cavity, a plurality of limiting holes are provided on the threaded rod, a limiting nut is provided at one end of the threaded rod located outside the cavity, through holes are provided on both sides of the connecting sleeve, limiting rods are provided through the through holes and the limiting holes, an armrest rod is provided on the threaded rod, an armrest is provided on the armrest rod, a main frame is provided on both sides of the second connecting shaft, a seat cushion is connected to the main frame through a support rod, and the beneficial effects are as follows: such a device has a simple structure and is easy to use, and can adjust the heights of the armrests and the seat cushion at the same time according to the height of the child, and can better meet the needs.

[0004] The above patent improves the disadvantage that in the prior art bicycles, only the seat height can be adjusted, while the height of the corresponding armrests cannot be adjusted. Only adjusting the seat height will make the user feel uncomfortable when riding. This embodiment provides another implementation scheme for the problem raised in the above patent. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a height-adjustable children's bicycle armrest, which has the advantage of being easy to adjust the height of the armrest, and solves the problem that in the prior art bicycles, only the height of the seat can be adjusted, but the height of the corresponding armrest cannot be adjusted. If only the seat height is adjusted, the user will feel uncomfortable when riding.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a height-adjustable children's bicycle handrail, comprising an adjustment cylinder, an adjustment box is fixed on the top of the adjustment cylinder, a handrail rod is movably installed in the adjustment cylinder and penetrates to the top of the adjustment box, and a height adjustment mechanism is provided between the adjustment cylinder, the adjustment box and the handrail rod;

[0007] The height adjustment mechanism includes a rectangular box fixedly mounted on the surface of the adjusting box, two connecting rods movably mounted in the rectangular box and penetrating into the adjusting box, a clamping plate located in the adjusting box is fixedly mounted on one end of the connecting rod, an arc-shaped clamping groove is provided on the surface of the clamping plate, a top spring is fixedly mounted on the inner cavity of the adjusting cylinder, a connecting block is fixedly mounted on the top of the top spring, the handrail rod is fixedly mounted on the upper surface of the connecting block, an annular clamping groove is provided on the surface of the handrail rod, a limiting telescopic assembly is provided between the connecting rod and the rectangular box, and a limiting sliding assembly is provided between the clamping plate and the adjusting box.

[0008] Furthermore, the surface of the limiting telescopic assembly is fixedly mounted on a first connecting plate on the inner surface of the rectangular box, the surface of the connecting rod is fixedly mounted with a second connecting plate and a connecting rod limiting block, a tension spring is fixedly mounted between the first connecting plate and the second connecting plate, and connecting rod limiting grooves are provided on the surfaces of the opposite sides inside the rectangular box.

[0009] Furthermore, the connecting rod limiting block is inserted into the connecting rod limiting groove, the connecting rod limiting block is adapted to the connecting rod limiting groove, and the connecting rod limiting block and the connecting rod limiting groove are in sliding contact.

[0010] Furthermore, the limiting sliding assembly includes a cardboard limiting block fixedly mounted on the surface of the cardboard, and a cardboard limiting sliding groove is provided on the surface of the opposite side inside the adjustment box.

[0011] Furthermore, the cardboard limiting block is inserted into the cardboard limiting sliding groove, the cardboard limiting block is adapted to the cardboard limiting sliding groove, and the cardboard limiting block is in sliding contact with the cardboard limiting sliding groove.

[0012] Furthermore, the annular groove is adapted to the arc groove.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] The height-adjustable children's bicycle armrest is provided with a height adjustment mechanism between an adjustment cylinder, an adjustment box and a handrail rod, so that the height of the bicycle armrest can be adjusted conveniently during use, and the user can adjust the height of the armrest synchronously according to the seat height, which is beneficial to improving the riding comfort of the user and solves the problem that in the prior art, only the seat height can be adjusted while the height of the corresponding handrail cannot be adjusted, and only adjusting the seat height will make the user feel uncomfortable during riding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the interior of the structural adjustment box and the rectangular box of the utility model;

[0017] Figure 3 This is a schematic diagram of the structural handrail of the utility model.

[0018] In the figure: 1. adjusting cylinder; 2. adjusting box; 3. handrail rod; 4. rectangular box; 5. connecting rod; 6. clamping plate; 7. arc-shaped clamping groove; 8. top spring; 9. connecting block; 10. annular clamping groove; 11. first connecting plate; 12. second connecting plate; 13. connecting rod limit block; 14. tension spring; 15. connecting rod limit groove; 16. clamping plate limit block; 17. clamping plate limit sliding groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] For example, see Figure 1-3 A height-adjustable children's bicycle handrail in this embodiment comprises an adjusting cylinder 1, an adjusting box 2 is fixed on the top of the adjusting cylinder 1, a handrail rod 3 penetrating to the top of the adjusting box 2 is movably installed in the adjusting cylinder 1, a height adjustment mechanism is arranged between the adjusting cylinder 1, the adjusting box 2 and the handrail rod 3, the height adjustment mechanism comprises a rectangular box 4 fixedly installed on the surface of the adjusting box 2, two connecting rods 5 penetrating into the adjusting box 2 are movably installed in the rectangular box 4, a card plate 6 located in the adjusting box 2 is fixedly installed at one end of the connecting rod 5, an arc-shaped card groove 7 is provided on the surface of the card plate 6, a top spring 8 is fixedly installed in the inner cavity of the adjusting cylinder 1, a connecting block 9 is fixedly installed on the top of the top spring 8, the handrail rod 3 is fixedly installed on the upper surface of the connecting block 9, an annular card groove 10 is provided on the surface of the handrail rod 3, the annular card groove 10 is adapted to the arc card groove 7, so that the card plate 6 is convenient to be inserted into the annular card groove 10.

[0021] A limiting telescopic assembly is provided between the connecting rod 5 and the rectangular box 4. The surface of the limiting telescopic assembly is fixedly mounted on a first connecting plate 11 on the inner surface of the rectangular box 4. A second connecting plate 12 and a connecting rod limiting block 13 are fixedly mounted on the surface of the connecting rod 5. A tension spring 14 is fixedly mounted between the first connecting plate 11 and the second connecting plate 12. Connecting rod limiting grooves 15 are provided on the surfaces of the opposite sides of the interior of the rectangular box 4. The connecting rod limiting blocks 13 are inserted into the connecting rod limiting grooves 15. The connecting rod limiting blocks 13 are adapted to the connecting rod limiting grooves 15. The connecting rod limiting blocks 13 and the connecting rod limiting grooves 15 are in sliding contact with each other, so as to facilitate the movement of the connecting rod limiting blocks 13 in the connecting rod limiting grooves 15.

[0022] A limit sliding assembly is provided between the card board 6 and the adjusting box 2, and the limit sliding assembly includes a card board limit block 16 fixedly mounted on the surface of the card board 6, and a card board limit sliding groove 17 is provided on the opposite side surface inside the adjusting box 2. The limit sliding assembly is helpful to improve the stability of the card board 6 when it moves inside the adjusting box 2, and the card board limit block 16 is inserted into the card board limit sliding groove 17, and the card board limit block 16 is adapted to the card board limit sliding groove 17. The card board limit block 16 and the card board limit sliding groove 17 are in sliding contact with each other, which facilitates the card board limit block 16 to move in the card board limit sliding groove 17.

[0023] It should be noted that the shape of the connection block 9 in this embodiment is the same as the internal shape of the adjustment tube 1 , and the surface of the connection block 9 is in sliding contact with the inner surface of the adjustment tube 1 , which facilitates the movement of the connection block 9 inside the adjustment tube 1 .

[0024] The working principle of the above embodiment is:

[0025] By pulling the connecting rod 5, the connecting rod 5 is contracted into the rectangular box 4, and the tension spring 14 is stretched. At this time, the clamping plate 6 is separated from the handrail rod 3, and the handrail rod 3 is pushed upward by the top spring 8, thereby increasing the height of the handrail rod 3. After the adjustment is completed, the connecting rod 5 is released, and the tension spring 14 pulls the connecting rod 5 back to its original position, thereby making the clamping plate 6 return to its original position and contact with the handrail rod 3 again until the annular clamping groove 10 and the arc clamping groove 7 fit together to fix the height of the handrail rod 3.

[0026] Embodiment 2, on the basis of embodiment 1, a cross bar is fixedly installed between the two connecting rods 5, and a pull rod penetrating to the outer surface of the rectangular box 4 is fixedly installed on the surface of the cross bar. The pull rod can be used to pull the connecting rod 5 to move, and then the card plate 6 can be pulled to move in the adjustment box 2.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A height-adjustable children's bicycle handrail, comprising an adjustment cylinder (1), an adjustment box (2) fixed to the top of the adjustment cylinder (1), and a handrail rod (3) movably installed in the adjustment cylinder (1) and penetrating to the top of the adjustment box (2), characterized in that: A height adjustment mechanism is provided between the adjustment cylinder (1), the adjustment box (2) and the handrail (3); The height adjustment mechanism comprises a rectangular box (4) fixedly mounted on the surface of the adjustment box (2); two connecting rods (5) are movably mounted in the rectangular box (4) and penetrate into the adjustment box (2); a card plate (6) located in the adjustment box (2) is fixedly mounted on one end of the connecting rod (5); an arc-shaped card groove (7) is provided on the surface of the card plate (6); a top spring (8) is fixedly mounted in the inner cavity of the adjustment cylinder (1); a connecting block (9) is fixedly mounted on the top of the top spring (8); the handrail rod (3) is fixedly mounted on the upper surface of the connecting block (9); an annular card groove (10) is provided on the surface of the handrail rod (3); a limit telescopic assembly is provided between the connecting rod (5) and the rectangular box (4); and a limit sliding assembly is provided between the card plate (6) and the adjustment box (2).

2. A height-adjustable children's bicycle handrail according to claim 1, characterized in that: The surface of the limit telescopic component is fixedly mounted on a first connecting plate (11) on the inner surface of the rectangular box (4); the surface of the connecting rod (5) is fixedly mounted with a second connecting plate (12) and a connecting rod limit block (13); a tension spring (14) is fixedly mounted between the first connecting plate (11) and the second connecting plate (12); and connecting rod limit grooves (15) are provided on the surfaces of opposite sides inside the rectangular box (4).

3. A height-adjustable children's bicycle handrail according to claim 2, characterized in that: The connecting rod limiting block (13) is inserted into the connecting rod limiting groove (15), the connecting rod limiting block (13) is matched with the connecting rod limiting groove (15), and the connecting rod limiting block (13) and the connecting rod limiting groove (15) are in sliding contact.

4. The height-adjustable children's bicycle handrail according to claim 1, characterized in that: The limit sliding assembly comprises a cardboard limit block (16) fixedly mounted on the surface of the cardboard (6), and a cardboard limit sliding groove (17) is provided on the surface of the opposite side inside the adjustment box (2).

5. A height-adjustable children's bicycle handrail according to claim 4, characterized in that: The cardboard limiting block (16) is inserted into the cardboard limiting sliding groove (17), the cardboard limiting block (16) is adapted to the cardboard limiting sliding groove (17), and the cardboard limiting block (16) and the cardboard limiting sliding groove (17) are in sliding contact.

6. The height-adjustable children's bicycle handrail according to claim 1, characterized in that: The annular clamping groove (10) is matched with the arc-shaped clamping groove (7).

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