CN107826196B

CN107826196B - Portable folding tricycle

Info

Publication number: CN107826196B
Application number: CN201711241021.2A
Authority: CN
Inventors: 柴春亮
Original assignee: Kunshan Lebei Children Products Co ltd
Current assignee: Kunshan Lebei Children Products Co ltd
Priority date: 2017-11-30
Filing date: 2017-11-30
Publication date: 2023-06-23
Anticipated expiration: 2037-11-30
Also published as: CN107826196A

Abstract

The invention provides a portable folding tricycle, which comprises: a seat unit, a front frame unit, a rear frame unit and a longitudinal locking unit connected by pins; the front frame unit comprises 2 first connecting seats; the first connecting seat is arranged at the connecting end of the front frame unit and the rear frame unit; the rear frame unit comprises a second connecting seat matched with the first connecting seat and a rear wheel; the second connecting seat is positioned at the inner side of the first connecting seat; the second connecting seat comprises a second limiting groove; the rear frame unit comprises a transverse locking assembly, a rear frame assembly and a rear wheel assembly; the rear frame unit can rotate around the longitudinal locking unit through the second limiting groove; the longitudinal locking units are arranged between the second connecting seats in parallel. According to the invention, by arranging the longitudinal locking component and the transverse locking component, the secondary folding comprising longitudinal folding and transverse folding can be realized by only pressing the front and back unlocking pin buttons and the left and right folding buttons. The folding type folding portable bicycle is regular in shape and small in size after being folded, and is convenient to carry during traveling.

Description

Portable folding tricycle

Technical Field

The invention relates to the technical field of children toy vehicles, in particular to a portable folding tricycle.

Background

The existing frame body of the children tricycle is generally fixed with a frame head pipe sleeved outside a handlebar, so that the frame cannot be folded and can only be displayed in a riding posture, and when the tricycle is carried out, stored or transported, the tricycle is inconvenient due to the fact that the volume is too large, and the cost is high during transportation.

Disclosure of Invention

The invention aims to provide a portable folding tricycle which solves the problems in the prior art, and can realize secondary folding by only pressing a front unlocking pin button, a rear unlocking pin button and a left folding button and a right folding button; the folded shape is regular and the volume is small, so that the folding bicycle is convenient to travel and carry. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

a portable folding tricycle comprising: a seat unit, a front frame unit, a rear frame unit and a longitudinal locking unit connected by pins;

the front frame unit comprises 2 first connecting seats; the first connecting seat is arranged at the connecting end of the front frame unit and the rear frame unit; the rear frame unit comprises a second connecting seat matched with the first connecting seat and a rear wheel; the second connecting seat is positioned on the inner side of the first connecting seat; the second connecting seat comprises a second limiting groove; the rear frame unit can rotate around the longitudinal locking unit through the second limiting groove;

the longitudinal locking units are arranged between the second connecting seats in parallel; a seat clamping groove is formed in one side, facing the second connecting seat, of the longitudinal locking unit;

the seat unit includes a seat and a seat base disposed below the seat; the seat base is clamped in the seat clamping groove.

Preferably, the longitudinal locking unit comprises a locking base and a longitudinal locking assembly moving along the locking base;

the locking base comprises a locking groove and a limiting part; the locking base is arranged obliquely upwards; the locking base is inwards recessed towards one side of the second connecting seat and provided with the locking groove; the limiting part is positioned at one side of the locking groove which is obliquely upwards; the limiting part penetrates through the first connecting seat, the second connecting seat and the seat base;

the longitudinal locking assembly is located within the locking base; the longitudinal locking assembly comprises a front unlocking pin button, a rear unlocking pin button, a first reset spring, a locking block and a locking pin; the first reset spring is clamped between the front unlocking pin button and the rear unlocking pin button and the locking block; the locking block is clamped at one end of the locking base; the front and rear unlocking pin buttons are positioned at the other end of the locking base and can move along the side wall of the locking base; the front and rear unlocking pin buttons comprise locking holes and first limiting grooves capable of moving along the limiting parts; the locking pin is matched with the locking hole; one end of the locking pin is movable along the locking groove.

Preferably, the locking block is located at an end of the locking base inclined upward.

Preferably, the second limiting groove is of an arc-shaped structure; the first section is outwards protruded and used for locking the locking pin; the second section is recessed inwards to form a moving track of the locking pin; the third section and the first section have the same structure; the fourth section and the second section have the same structure; the first section, the second section, the third section and the fourth section are connected end to end clockwise.

Preferably, the locking pin is blocked at the joint of the fourth section and the first section to form a longitudinal locking state; the locking pin is clamped at the joint of the second section and the third section to form a longitudinal folding state.

Preferably, the rear frame unit comprises a lateral locking assembly, a rear frame assembly and a rear wheel assembly;

the rear frame assembly includes a first hollow axle; an adjusting spring is arranged in the first hollow shaft; the first hollow shaft is positioned at the connecting end of the rear frame assembly and the rear wheel assembly; the first hollow shaft is provided with a first transverse locking hole and a second transverse locking hole along the axial direction; the first transverse locking hole is positioned at one end of the first hollow shaft connected with the second hollow shaft;

the rear wheel assembly comprises a second hollow shaft matched with the first hollow shaft, a left folding button, a right folding button and a second reset spring; the rear wheel is positioned at the free end of the second hollow shaft; the left folding button and the right folding button are embedded in the hub of the rear wheel; the second reset spring is clamped between the left folding button and the right folding button and the transverse locking component;

one end of the transverse locking component is positioned on the first hollow shaft and can move along the first hollow shaft through the adjusting spring; the other end of the transverse locking assembly passes through the second hollow shaft and is connected with the second reset spring.

Preferably, the transverse locking assembly comprises a left unlocking pin trigger pin, a right unlocking pin trigger pin, a left unlocking pin, a right unlocking pin trigger pin, a third return spring and a left unlocking pin fixing seat and a right unlocking pin fixing seat; one end of the left unlocking pin trigger pin and one end of the right unlocking pin trigger pin are connected with the left unlocking pin fixing seat and the right unlocking pin fixing seat through buckles; the other ends of the left unlocking pin trigger pin and the right unlocking pin trigger pin are connected with the second reset spring; one ends of the left unlocking pin and the right unlocking pin extend into the first hollow shaft; the other ends of the left unlocking pin and the right unlocking pin penetrate through the first hollow shaft and the left unlocking pin fixing seat in the radial direction and can be respectively matched with the first transverse locking hole and the second transverse locking hole; one end of the third return spring is connected with one end of the left unlocking pin and the right unlocking pin, which extend into the left unlocking pin fixing seat and the right unlocking pin fixing seat; the other end of the third reset spring is fixed on the inner wall of the first hollow shaft along the radial direction.

Preferably, the left unlocking pin and the right unlocking pin are matched with the first transverse locking hole to form a transverse locking state; the left and right unlocking pins are matched with the second transverse locking holes to form a transverse folding state.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, by arranging the longitudinal locking component and the transverse locking component, the secondary folding comprising longitudinal folding and transverse folding can be realized by only pressing the front and back unlocking pin buttons and the left and right folding buttons. The folding type folding portable bicycle is regular in shape and small in size after being folded, and is convenient to carry during traveling.

Drawings

FIG. 1 is a schematic view of a portable folding tricycle according to an embodiment of the present invention;

FIG. 2 is a schematic view of the longitudinal locking unit of FIG. 1;

FIG. 3 is a schematic diagram of a second limiting groove in FIG. 1;

FIG. 4 is a schematic view of the rear frame unit of FIG. 1;

fig. 5 is a schematic view of the transverse locking assembly of fig. 1.

The vehicle comprises a 1-seat unit, a 2-front frame unit, a 3-rear frame unit, a 4-longitudinal locking unit, a 11-seat base, a 21-first connecting seat, a 31-second connecting seat, a 32-transverse locking component, a 33-rear frame component, a 34-rear wheel component, a 341-left and right folding button, a 41-locking base, a 42-longitudinal locking component, a 311-second limit groove, a 3111-first section, a 3112-second section, a 321-left and right unlocking pin trigger pin, a 322-left and right unlocking pin, a 323-third reset spring, a 324-left and right unlocking pin fixing seat, a 411-locking groove, a 412-limit part, a 421-front and rear unlocking pin button, 422-first reset spring, a 423-locking block, a 424-locking pin and a 4211-first limit groove.

Detailed Description

The technical scheme adopted by the invention is further described below with reference to the schematic diagram.

As shown in fig. 1, a portable folding tricycle, comprising: a seat unit 1, a front frame unit 2, a rear frame unit 3 and a longitudinal locking unit 4 connected by pins.

The front frame unit 2 includes 2 first connection seats 21; the first connecting seat 21 is arranged at the connecting end of the front frame unit 2 and the rear frame unit 3; the rear frame unit 3 includes a second connection seat 31 and rear wheels which are engaged with the first connection seat 21; the second connecting seat 31 is positioned on the inner side of the first connecting seat 21; the second connecting seat 31 comprises a second limiting groove 311; the rear frame unit 3 is rotatable about the longitudinal locking unit 4 by the second stopper groove 311. The longitudinal locking units 4 are arranged in parallel between the second connecting seats 31; the side of the longitudinal locking unit 4 facing the second connecting seat 31 is provided with a seat clamping groove; the seat unit 1 includes a seat and a seat base 11 disposed below the seat; the seat base 11 is engaged with the seat engaging groove.

As shown in fig. 2, the longitudinal locking unit 4 includes a locking base 41 and a longitudinal locking assembly 42 that moves along the locking base 41.

The longitudinal locking unit 4 comprises a locking base 41 and a longitudinal locking assembly 42 that moves along the locking base 41.

The lock base 41 includes a lock slot 411 and a stopper 412; the lock base 41 is disposed obliquely upward; the locking base 41 is recessed inward toward one side of the second connection seat 31 and provided with a locking slot 411; the limiting part 412 is positioned at one side of the locking slot 411 obliquely upward; the stopper 412 passes through the first connecting seat 21, the second connecting seat 31, and the seat base 11;

a longitudinal locking assembly 42 is located within the locking base 41; the longitudinal lock assembly 42 includes a front and rear unlocking pin button 421, a first return spring 422, a locking block 423, and a locking pin 424; the first return spring 422 is clamped between the front and rear unlocking pin buttons 421 and the locking block 423; the locking block 423 is clamped at one end of the locking base 41; the front and rear unlocking pin buttons 421 are located at the other end of the locking base 41 and are movable along the side walls of the locking base 41; the front and rear unlocking pin buttons 421 include a locking hole and a first limiting groove 4211 movable along the limiting part 412; the locking pin 424 fits into the locking hole; one end of the locking pin 424 is movable along the locking slot 411. Further, the lock piece 423 is located at one end of the lock base 41 obliquely upward.

As shown in fig. 3, the second limiting groove 311 has an arc structure; the first segment 3111 is outwardly convex for locking the locking pin 424; the second segment 3112 is recessed inwardly to form a travel track for the locking pin 424; the third section and the first section 3111 are identical in structure; the fourth segment and the second segment 3112 are identical in structure; the first segment 3111, the second segment 3112, the third segment, and the fourth segment are connected end to end clockwise. In the present embodiment, the locking pin 424 is caught at the junction of the fourth section and the first section 3111 to form a longitudinally locked state; the locking pin 424 is snapped at the junction of the second segment 3112 and the third segment to form a longitudinally folded state.

As shown in fig. 4, the rear frame unit 3 includes a lateral lock assembly 32, a rear frame assembly 33, and a rear wheel assembly 34.

The rear frame assembly 33 includes a first hollow axle; an adjusting spring is arranged in the first hollow shaft; the first hollow shaft is positioned at the connecting end of the rear frame component and the rear wheel component. The first hollow shaft is provided with a first transverse locking hole and a second transverse locking hole along the axial direction; the first transverse locking hole is positioned at one end of the first hollow shaft connected with the second hollow shaft.

The rear wheel assembly 34 includes a second hollow shaft fitted with the first hollow shaft, left and right retracting buttons 341, and a second return spring; the rear wheel is positioned at the free end of the second hollow shaft; the left and right folding buttons are embedded in the hub of the rear wheel; the second return spring is interposed between the left and right retracting buttons 341 and the lateral locking assembly 32. One end of the transverse locking component is positioned on the first hollow shaft and can move along the first hollow shaft through the adjusting spring; the other end of the transverse locking assembly passes through the second hollow shaft and is connected with a second return spring.

As shown in fig. 5, the lateral locking assembly includes a left and right unlocking pin trigger pin 321, a left and right unlocking pin 322, a third return spring 323, and a left and right unlocking pin fixing seat 324; one end of the left and right unlocking pin trigger pins 321 is connected with the left and right unlocking pin fixing seats 324 through buckles; the other ends of the left unlocking pin trigger pin 321 and the right unlocking pin trigger pin 321 are connected with a second reset spring; one end of the left and right unlocking pins 322 extends into the first hollow shaft; the other ends of the left and right unlocking pins 322 radially pass through the first hollow shaft and the left and right unlocking pin fixing seats 324 and can be respectively matched with the first transverse locking holes and the second transverse locking holes; one end of the third return spring 323 is connected with one end of the left and right unlocking pins 322 extending into the left and right unlocking pin fixing seats 324; the other end of the third return spring 323 is fixed to the inner wall of the first hollow shaft in the radial direction.

In the present embodiment, the left and right unlocking pins 322 are adapted to form a lateral locking state with the first lateral locking holes; the left and right unlocking pins 322 are adapted to form a laterally folded state with the second laterally locked hole.

The working principle of the invention is as follows: the front and rear unlocking pin buttons 421 are pressed, the front and rear unlocking pin buttons 421 move upward along the lock base 41, the first limiting grooves 4211 move 412 along the limiting portions, the locking pins 424 move along the locking grooves, and the locking pins 424 are shifted from the longitudinally locked state to the folded state. At this time, the rear frame unit 3 is rotated, and the rear frame unit 3 is rotated along the second segment 3112 around the lock pin 424, and when the folded state is reached, the lock pin 424 returns to the longitudinally locked state by the first return spring 422, that is, the clockwise longitudinal folding is completed.

Pressing the left and right folding button 341, the left and right unlocking pin fixing base 324 moves along the second hollow shaft to the first hollow shaft, namely, the left and right unlocking pin triggering pin 321 is triggered, the left and right unlocking pin 322 withdraws from the first transverse locking hole, namely, the whole body formed by the left and right unlocking pin fixing base 324, the left and right unlocking pin triggering pin 321, the rear wheel and the second hollow shaft is released from the fixed relation with the first hollow shaft, the first hollow shaft moves along the second hollow shaft, and the left and right unlocking pins 322 start to transition from the transverse locking state to the transverse folding state. When the left and right unlocking pins 322 reach the transverse folding state, the left and right transverse folding is realized.

Compared with the prior art, the folding device has the advantages that by arranging the longitudinal locking component and the transverse locking component, the secondary folding comprising longitudinal folding and transverse folding can be realized by only pressing the front and rear unlocking pin buttons and the left and right folding buttons. The folding type folding portable bicycle is regular in shape and small in size after being folded, and is convenient to carry during traveling.

The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any person skilled in the art will make any equivalent substitution or modification to the technical solution and technical content disclosed in the invention without departing from the scope of the technical solution of the invention, and the technical solution of the invention is not departing from the scope of the invention.

Claims

1. A portable folding tricycle, comprising: a seat unit (1), a front frame unit (2), a rear frame unit (3) and a longitudinal locking unit (4) connected by pins;

the front frame unit (2) comprises 2 first connecting seats (21); the first connecting seat (21) is arranged at the connecting end of the front frame unit (2) and the rear frame unit (3); the rear frame unit (3) comprises a second connecting seat (31) matched with the first connecting seat (21) and a rear wheel; the second connecting seat (31) is positioned on the inner side of the first connecting seat (21); the second connecting seat (31) comprises a second limiting groove (311); the rear frame unit (3) can rotate around the longitudinal locking unit (4) through the second limit groove (311);

the longitudinal locking units (4) are arranged in parallel between the second connecting seats (31); a seat clamping groove is formed in one side, facing the second connecting seat (31), of the longitudinal locking unit (4);

the seat unit (1) comprises a seat and a seat base (11) arranged below the seat; the seat base (11) is clamped in the seat clamping groove;

the longitudinal locking unit (4) comprises a locking base (41) and a longitudinal locking assembly (42) moving along the locking base (41);

the locking base (41) comprises a locking groove (411) and a limiting part (412); the locking base (41) is arranged obliquely upwards; the locking base (41) is recessed inward toward one side of the second connecting seat (31) and is provided with the locking groove (411); the limit part (412) is positioned at one side of the locking groove (411) which is inclined upwards; the limiting part (412) penetrates through the first connecting seat (21), the second connecting seat (31) and the seat base (11);

-said longitudinal locking assembly (42) is located within said locking base (41); the longitudinal locking assembly (42) comprises a front unlocking pin button (421), a rear unlocking pin button, a first reset spring (422), a locking block (423) and a locking pin (424); the first reset spring (422) is clamped between the front unlocking pin button (421) and the rear unlocking pin button (423); the locking block (423) is clamped at one end of the locking base (41); the front and rear unlocking pin buttons (421) are positioned at the other end of the locking base (41) and can move along the side wall of the locking base (41); the front and rear unlocking pin buttons (421) comprise locking holes and first limiting grooves (4211) which can move along the limiting parts (412); the locking pin (424) fits with the locking hole; one end of the locking pin (424) is movable along the locking slot (411);

the rear frame unit (3) comprises a transverse locking assembly (32), a rear frame assembly (33) and a rear wheel assembly (34);

the rear frame assembly (33) includes a first hollow axle; an adjusting spring is arranged in the first hollow shaft; the first hollow shaft is positioned at the connecting end of the rear frame assembly and the rear wheel assembly; the first hollow shaft is provided with a first transverse locking hole and a second transverse locking hole along the axial direction;

the rear wheel assembly (34) comprises a second hollow shaft matched with the first hollow shaft, a left and right folding button (341) and a second return spring; the first transverse locking hole is positioned at one end of the first hollow shaft connected with the second hollow shaft; the rear wheel is positioned at the free end of the second hollow shaft; the left folding button and the right folding button are embedded in the hub of the rear wheel; the second reset spring is clamped between the left folding button (341) and the right folding button and the transverse locking component (32);

2. The portable folding tricycle according to claim 1, characterised in that the locking block (423) is located at one end of the locking base (41) that is inclined upwards.

3. The portable folding tricycle according to any one of claims 1-2, characterised in that the second limit groove (311) is of an arc-shaped structure; the first section (3111) protrudes outwards for locking the locking pin (424); the second section (3112) is recessed inwardly to form a track of movement for the locking pin (424); the third section and the first section (3111) have the same structure; the fourth section and the second section (3112) have the same structure; the first section (3111), the second section (3112), the third section and the fourth section are connected end to end clockwise.

4. A portable folding tricycle according to claim 3, characterised in that the locking pin (424) is snapped into a longitudinally locked condition at the junction of the fourth and first sections (3111); the locking pin (424) is clamped at the joint of the second section (3112) and the third section to form a longitudinal folding state.

5. The portable folding tricycle of claim 1 wherein the lateral locking assembly (32) includes left and right unlocking pin trigger pins (321), left and right Jie Suoxiao (322), a third return spring (323), left and right unlocking pin holders (324); one end of the left unlocking pin trigger pin (321) and one end of the right unlocking pin trigger pin are connected with the left unlocking pin fixing seat (324) through a buckle; the other ends of the left unlocking pin trigger pin (321) and the right unlocking pin trigger pin are connected with the second reset spring; one end of the left unlocking pin (322) and one end of the right unlocking pin extend into the first hollow shaft; the other ends of the left unlocking pin and the right unlocking pin (322) penetrate through the first hollow shaft and the left unlocking pin fixing seat (324) along the radial direction and can be respectively matched with the first transverse locking hole and the second transverse locking hole; one end of the third return spring (323) is connected with one end of the left unlocking pin (322) extending into the left unlocking pin fixing seat (324); the other end of the third return spring (323) is fixed on the inner wall of the first hollow shaft along the radial direction.

6. The portable folding tricycle of claim 5 wherein the left and right unlocking pins (322) are adapted to form a transverse locking condition with the first transverse locking aperture; the left and right unlocking pins (322) are matched with the second transverse locking holes to form a transverse folding state.