CN210681051U

CN210681051U - Child's bike

Info

Publication number: CN210681051U
Application number: CN201921355847.6U
Authority: CN
Inventors: 战华锋
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-06-05
Anticipated expiration: 2029-08-20

Abstract

The utility model discloses a child's bike, through chain mechanism drive wheel rotation, chain mechanism includes the chain, with two at least gear pieces of chain engaged with, the adjustment mechanism who makes the chain tensioning adjustably, adjustment mechanism includes the take-up pulley, supplies the take-up pulley along its gliding spout, the take-up pulley meshes with the chain and makes the chain tensioning through the removal of take-up pulley. This bassinet adjusts the elasticity of chain through setting up slidable take-up pulley, simple structure, and convenient operation is applicable to motorcycle types such as fixed unadjustable motorcycle type, balance car and bicycle conversion between bicycle fluted disc and the flywheel.

Description

Child's bike

Technical Field

The utility model relates to a child's bike.

Background

Children's vehicles, such as children's bicycles, balance cars, convertible types of bicycles, etc., are generally driven by a chain mechanism. And among the prior art to the tensioning of bicycle chain adjust generally realize through the distance between adjustment fluted disc and the flywheel, this kind of regulation structure is comparatively complicated, and the cost is higher, generally is applicable to adult's bicycle, and is not very suitable for the baby carriage that the volume is less and change very fast (need to change the car that is fit for the size along with the growth of children's age).

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model aims to provide a child's bike.

In order to achieve the above purpose, the utility model discloses a technical scheme is: a child's bike drives wheels to rotate through a chain mechanism, the chain mechanism comprises a chain, at least two gear pieces meshed with the chain and an adjusting mechanism used for adjustably tensioning the chain, the adjusting mechanism comprises a tensioning wheel and a sliding groove used for enabling the tensioning wheel to slide along the sliding groove, and the tensioning wheel is meshed with the chain and enables the chain to be tensioned through movement of the tensioning wheel.

Furthermore, a limiting mechanism for limiting the relative position of the sliding chute and the tensioning wheel is arranged between the sliding chute and the tensioning wheel.

Furthermore, the adjusting mechanism further comprises a connecting plate, the sliding groove is formed in the connecting plate, the limiting mechanism comprises a bushing and a fixing block which are located on two sides of the connecting plate respectively, and a bolt which penetrates through the bushing from one end of the bushing and penetrates through the sliding groove to be in threaded connection with the fixing block, the nut of the bolt is abutted against one end of the bushing, the other end of the bushing is abutted against the connecting plate, and the tensioning wheel is rotatably sleeved on the outer side of the bushing.

More nearly leeway, the connecting plate has hollow out construction and is located the splice bar of this hollow out construction department, and the spout is seted up on this splice bar, and the fixed block has a recess and makes this cross-section be the character cut in bas-relief shape on the cross-section through take-up pulley central line, and the splice bar is located in the recess.

Further, the slide groove is provided between the two gear members.

Further, the chain is in a closed shape, the gear member is located on the inner side of the closed shape, and the tension pulley is located on the outer side of the closed shape.

Further, the spout is the arc.

Further, two gear members, one relatively larger and the other relatively smaller, the middle of the chute is arched towards the larger gear member.

Furthermore, the child vehicle comprises a chain housing, the chain mechanism is arranged on the inner side of the chain housing, and the connecting plate is fixedly connected with the chain housing.

Further, at least two of the gear members include a gear plate connected to the pedal mechanism, and a flywheel connected to the wheel shaft of the wheel.

Furthermore, the pedal mechanism comprises a crankshaft and pedals connected to two ends of the crankshaft, and the fluted disc is connected to the crankshaft.

Due to the adoption of the technical scheme, the tightness of the chain is adjusted by arranging the slidable tension wheel, the baby carrier is simple in structure and convenient to operate, and is suitable for vehicle types such as fixed and unadjustable vehicle types between a bicycle fluted disc and a flywheel, balance cars and bicycle conversion.

Drawings

FIG. 1 is a schematic structural view of a chain mechanism of a child car according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

fig. 3 is a schematic view of a portion a of fig. 2.

The reference numbers in the figures are:

1. a chain; 2. a tension wheel; 3. a chute; 4. a connecting plate; 41. connecting ribs; 42. a hollow structure; 5. a fluted disc; 6. a flywheel; 7. a chain housing; 8. a bushing; 81. a limit convex ring; 9. a fixed block; 91. a groove; 10. and (4) bolts.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, enables those skilled in the art to more readily understand the advantages and features of the present invention.

As can be seen from the structural schematic diagrams of fig. 1 and fig. 3, the child vehicle in the embodiment drives the wheels to rotate through a chain mechanism, and the chain mechanism comprises a chain 1, at least two gear pieces engaged with the chain 1, and an adjusting mechanism for adjustably tensioning the chain 1.

The at least two gear members in this embodiment comprise a toothed disc 5 connected to the pedal mechanism, a flywheel 6 connected to the axle of the wheel. Specifically, the pedal mechanism comprises a crankshaft and pedals connected to two ends of the crankshaft, the fluted disc 5 is connected to the crankshaft, the number of the flywheels 6 can be one, or a plurality of flywheels can be coaxially connected, and the chain 1 is meshed with the fluted disc 5 and one of the flywheels 6.

The adjusting mechanism comprises a tension pulley 2 and a sliding groove 3 along which the tension pulley 2 slides, wherein the tension pulley 2 is engaged with the chain 1 and tensions the chain 1 by the movement of the tension pulley 2.

The chute 3 is preferably arranged between two gear members.

Chain 1 is closed shape, and gear spare is located the inboard of this closed shape, and in this embodiment, take-up pulley 2 is located the outside of this closed shape to when take-up pulley 2 makes chain 1 tensioning through removing, chain 1 is the closed shape of indent, thereby has saved the space that whole chain mechanism occupied.

Preferably, a limiting mechanism for limiting the relative position of the sliding chute 3 and the tensioning wheel 2 is arranged between the two. The embodiment provides a specific structure of a limiting mechanism, namely a bushing 8, a fixing block 9 and a bolt 10. The limiting mechanism further comprises a connecting plate 4, the sliding groove 3 is arranged on the connecting plate 4, the tensioning wheel 2 is rotatably sleeved on the outer side of the bushing 8, the bushing 8 and the fixing block 9 are located on two sides of the connecting plate 4 respectively and can clamp the connecting plate 4 tightly, the bolt 10 penetrates the bushing 8 from one end of the bushing 8 and penetrates the sliding groove 3 to be in threaded connection with the fixing block 9, the nut of the bolt 10 abuts against one end of the bushing 8, the other end of the bushing 8 abuts against the connecting plate 4, the bushing 8 and the fixing block 9 are tightly clamped with the connecting plate 4 through threaded locking between the bolt 10 and the fixing block 9, and therefore the position between the tensioning wheel 2 and the sliding groove 3 is locked.

In a more preferred embodiment, one end of the bushing 8 is provided with a limit convex ring 81 for limiting the axial movement of the tension pulley 2, and the limit convex ring 81 limits the tension pulley 2 between the limit convex ring 81 and the connecting plate 4.

In a more preferred embodiment, the connecting plate 4 has a cutout 42 and a connecting rib 41 located at the cutout 42, and the runner 3 opens onto the connecting rib 41. The hollowed-out structures 42 can reduce the weight of the connecting plate 4, thereby reducing the overall load of the buggy. The fixing block 9 has a groove 91 in a cross section passing through the center line of the tension pulley 2 so that the cross section is in a concave shape, and the connecting rib 41 is located in the groove 91.

In this embodiment, the chute 3 is arc-shaped. The two gear members, one relatively larger and the other relatively smaller, are generally larger than the toothed disc 5, and the flywheel 6 is smaller, and the curved chute 3 is curved in a direction such that the middle portion thereof is arched toward the toothed disc 5.

The child vehicle comprises a chain housing 7, a chain mechanism is arranged on the inner side of the chain housing, and the connecting plate 4 is fixedly connected with the chain housing 7.

The working principle is as follows:

when the tightness of the chain 1 is adjusted, the bolt 10 and the fixed block 9 are loosened, then the tensioning wheel 2 is moved along the sliding groove 3, as shown in fig. 1, the tensioning wheel 2 is moved upwards to tension the chain 1, the tensioning wheel 2 is moved downwards to loosen the chain 1, and after the chain is adjusted to a proper position, the bolt 10 and the fixed block 9 are tightened, so that the bushing 8 and the fixed block 9 clamp the connecting plate 4, and the position of the tensioning wheel 2 is fixed, and the tightness adjustment of the chain 1 is completed.

The child's bike in the embodiment is simple in structure and convenient to operate, and is suitable for bike types, balance cars, bike conversion and the like, wherein the bike types are not adjustable in distance between a bike fluted disc and a flywheel.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a child's bike, drives the wheel through chain mechanism and rotates its characterized in that: the chain mechanism comprises a chain (1), at least two gear pieces meshed with the chain (1) and an adjusting mechanism used for adjustably tensioning the chain (1), wherein the adjusting mechanism comprises a tensioning wheel (2) and a sliding groove (3) along which the tensioning wheel (2) slides, and the tensioning wheel (2) is meshed with the chain (1) and used for tensioning the chain (1) through the movement of the tensioning wheel (2).

2. The child's vehicle of claim 1, wherein: and a limiting mechanism for limiting the relative position of the sliding chute (3) and the tensioning wheel (2) is arranged between the sliding chute and the tensioning wheel.

3. Child's vehicle according to claim 2, characterized in that: the adjusting mechanism further comprises a connecting plate (4), the sliding groove (3) is formed in the connecting plate (4), the limiting mechanism comprises a bushing (8) and a fixing block (9) which are located on two sides of the connecting plate (4) respectively, and a bolt (10) which penetrates through the bushing (8) from one end of the bushing (8) and penetrates through the sliding groove (3) and is connected with the fixing block (9) in a threaded mode, a nut of the bolt (10) abuts against one end of the bushing (8), the other end of the bushing (8) abuts against the connecting plate (4), and the tensioning wheel (2) is rotatably sleeved on the outer side of the bushing (8).

4. The child's vehicle of claim 3, wherein: the connecting plate (4) is provided with a hollow structure (42) and a connecting rib (41) located at the hollow structure (42), the sliding groove (3) is formed in the connecting rib (41), the fixing block (9) is provided with a groove (91) in the cross section passing through the central line of the tensioning wheel (2) to enable the cross section to be in a concave shape, and the connecting rib (41) is located in the groove (91).

5. The child's vehicle of claim 1, wherein: the sliding groove (3) is arranged between the two gear pieces.

6. The child's vehicle of claim 1, wherein: the chain (1) is in a closed shape, the gear piece is positioned on the inner side of the closed shape, and the tension pulley (2) is positioned on the outer side of the closed shape.

7. The child's vehicle of claim 1, wherein: the sliding groove (3) is arc-shaped.

8. The child's vehicle of claim 7, wherein: the two gear parts are relatively large, the other gear part is relatively small, and the middle part of the sliding groove (3) is arched towards the large gear part.

9. The child's vehicle of claim 3, wherein: the child vehicle comprises a chain housing (7), the chain mechanism is arranged on the inner side of the chain housing (7), and the connecting plate (4) is fixedly connected with the chain housing (7).

10. The child's vehicle of claim 1, wherein: the at least two gear parts comprise a fluted disc (5) connected with the pedal mechanism and a flywheel (6) connected with the wheel axle of the wheel.