WO2020006807A1

WO2020006807A1 - Buggy board for pushcart

Info

Publication number: WO2020006807A1
Application number: PCT/CN2018/099410
Authority: WO
Inventors: 林朝熙
Original assignee: 中山市爱福宝日用制品有限公司
Priority date: 2018-07-03
Filing date: 2018-08-08
Publication date: 2020-01-09
Also published as: CN108945074A; CN108945074B; KR20200004783A; KR102215772B1

Abstract

A buggy board used for a pushcart, comprising a wheel frame (1). The wheel frame (1) is provided with a seat (2) capable of being raised and lowered, and a push rod (3) capable of sliding in a movement direction of front and rear wheels, and being folded up between the wheel frame (1) and the seat (2). The push rod (3) drives the seat (2) to raise and lower. A locking structure (4) is provided between the push rod (3) and the wheel frame (1) so as to lock the push rod (3) and prevent the push rod (3) from sliding when the seat (2) is raised. When the push rod (3) slides and pulls up, the seat (2) is driven to raise, and when the push rod (3) slides and retracts, the seat (2) is driven to lower.

Description

Trolley for trailer

[Technical Field]

The invention relates to a trailer for hand trucks.

【Background technique】

In life, when there are two children with different ages in the family, it is not convenient to bring two strollers when going out. It is difficult to coordinate with children when they want to do so. Therefore, a small scooter is introduced behind the stroller, which is convenient for older children to stand at the back and easy to carry. However, the large multi-function is relatively simple, and it is not suitable for the multiple needs of children.

[Summary of the Invention]

The purpose of the present invention is to overcome the shortcomings in the prior art and provide a trailer for a trolley that can stand, sit, and can be used alone.

The present invention is achieved through the following technical solutions:

The trailer for trolleys is characterized by including a wheel frame, wherein the wheel frame is provided with an adjustable seat and a push rod capable of sliding along the direction of wheel movement, and the push rod can be folded between the wheel frame and the vehicle. Described between the seats.

The above-mentioned tow truck for trolleys is characterized in that the push rod drives the seat to be lifted, and the push rod and the wheel frame are provided between the push rod and the wheel frame to lock the push rod to limit the seat when the seat is raised. The locking structure of the slide rod is described.

The above-mentioned tow truck for trolleys is characterized in that the wheel frame includes a connecting rod for connecting the front and rear wheels, and the connecting rod is provided with a sliding seat capable of sliding along it, and the push rod and the The sliding seat is hinged.

The trailer for trolley as described above is characterized in that one end of the bottom of the seat is hinged to the free end of the push rod, and the other end or middle of the bottom of the seat is hinged to the middle of the push rod through a lifting rod.

The above-mentioned trailer for trolleys is characterized in that the locking structure includes a positioning pin provided on the sliding base, and the connecting rod is provided with a locking hole that cooperates with the positioning pin to lock the sliding base. .

The above-mentioned tow truck for trolleys is characterized in that the sliding base is provided with a push rod base connected to the push rod, the push rod base is hinged to the sliding base through a hollow hinge shaft, and the The outer surface of the push rod seat is circumferentially provided with a through groove communicating with its inner cavity and the inner cavity of the hollow hinge shaft. The positioning pin is L-shaped, is sleeved in the hollow hinge shaft and protrudes from the through groove.

The above-mentioned tow truck for trolleys is characterized in that the push rod is a telescopic rod, and includes a rod sleeve connected to the push rod seat, the telescopic rod is sleeved inside the rod sleeve, and the telescopic rod extends into the An end of the lever sleeve is provided with a squeezing and pushing portion capable of squeezing and pushing the positioning pin, and the positioning pin is connected with an elastic member capable of resetting its displacement.

The trailer for a cart as described above is characterized in that the squeeze part has an inclined surface or a curved surface that can interfere with the positioning pin.

The above-mentioned trailer trailer for trolleys is characterized in that the free end of the push rod is provided with a handle, and the seat is provided with an armrest opposite to the handle.

The above-mentioned trailer trailer for trolleys is characterized in that a handle is provided at the free end of the telescopic rod, and an armrest opposite to the handle is provided on the seat.

Compared with the prior art, the present invention has the following advantages:

The invention has the advantages of simple structure, driving the seat to rise when the push rod slides and pulls, and driving the seat to descend when sliding and retracting, simple and quick operation, and a locking structure ensures the stability of the raised seat, which is safe and reliable.

The invention can be used as a trolley alone or as a trailer after being used on a commonly used trolley. When towed in a folded state, the older child can stand on the seat, which is convenient for getting on and off. Get up, sit on the seat, lean back and put on the handle and handle, relax and comfortable. Wide range of applications.

[Brief Description of the Drawings]

FIG. 1 is an exploded view of a folded state of the present invention;

2 is a schematic structural diagram of an open state of the present invention;

3 is a schematic diagram of an exploded structure of a putter and a wheel frame according to the present invention;

4 is a cross-sectional view of a part of the structure of the locking slide of the locking structure of the present invention;

5 is a schematic structural diagram of a folded state of the present invention;

6 is a schematic structural diagram of a towing state of the present invention;

FIG. 7 is a schematic structural diagram of the second dragging state of the present invention.

【detailed description】

The present invention is further described in detail below with reference to the accompanying drawings of the description:

As shown in Figure 1-5, the trolley trailer includes a wheel frame 1, and the wheel frame 1 is provided with an adjustable seat 2 and a push rod 3 capable of sliding in the direction of wheel movement. The push rod 3 can be folded on the wheel. Between shelf 1 and seat 2. When the seat 2 is lowered, it is close to the wheel frame 1, the push rod 3 is folded between the wheel frame 1 and the seat 2, and a child or a pet can stand on the seat 2. When the seat 2 is raised, the push rod 3 can be folded to the push-pull position, which is convenient for pushing and pulling the trailer.

Preferably, for safety reasons, a handle 34 is provided at the free end of the push rod 3, and an armrest 21 opposite to the handle 34 is provided on the seat 2. As shown in FIG. 7, the older child sits behind the seat 2 and has an armrest 21 in front. The back has a handle 34 as a backrest, which is not easy to fall.

Preferably, the position 2 is moved up and down by a push rod 3. A lock structure 4 is provided between the push rod 3 and the wheel frame 1 to lock the push rod 3 when the seat 2 is raised to restrict the sliding of the push rod 3. Stable and secure.

The wheel frame 1 includes a connecting rod 11 connected to the front and rear wheels. The connecting rod 11 is provided with a sliding base 5 capable of sliding along the connecting rod 11. The push rod 3 is hinged with the sliding base 5. The connecting rods 11 may be one or two. In order to ensure the stability of the seat 2, there are preferably two connecting rods 11. The wheel frame 1 further includes a front beam 12 connected to the front wheel group and a rear beam 13 connected to the rear wheel group.

Preferably, one end of the bottom of the seat 2 is hinged to the free end of the push rod 3, and the other end or middle of the bottom of the seat 2 is hinged to the middle of the push rod 3 through a lift rod 6, and one end of the lift rod 6 is hinged to the seat 2 and the middle is hinged to the push rod. 3. The other end is hinged at the same end of the wheel frame 1 as the free end of the push rod 3. The wheel set at the same end as the handle 34 is defined as the rear wheel, and the lifting rod 6 is hinged on the rear beam 13. Further preferably, the lifting rod 6 is a U-shaped rod, the open end of the lifting rod 6 is hinged on the rear beam 13, the closed end is hinged on the bottom of the seat 2, and the middle portion is hinged on the middle of the push rod 3. After seat 2 has landed, it falls just above wheel frame 1.

The locking structure 4 includes a positioning pin 41 provided on the sliding base 5, and the connecting rod 11 is provided with a locking hole 42 for locking the sliding base 5 in cooperation with the positioning pin 41.

Preferably, the slide base 5 is provided with a push rod base 8 connected to the push rod 3. The push rod base 8 is hinged to the slide base 5 through a hollow hinge shaft 7. The slide base 5 includes a sliding sleeve sleeved by the connecting rod 11 and capable of sliding along the connecting rod 11. The sleeve 51 connects the connecting tube 52 of the sliding sleeve 51 on both sides and the sleeve 53 of the hollow hinge shaft 7. The connecting tube 52 is parallel to the sleeve 53. Preferably, the sliding sleeve 51, the connecting tube 52 and the sleeve 53 are integrally formed. 3 The push rod base 8 is fixedly connected. The outer surface of the push rod base 8 is provided with a through groove 81 communicating with the inner cavity of the hollow hinge shaft 7 and the hollow hinge shaft 7. The axial direction of the hollow hinge shaft 7 is parallel to the axial direction of the sliding base 5. The positioning pin 41 is It is L-shaped and penetrates the hollow hinge shaft 7 and protrudes from the through groove 81. The sleeve 53 of the sliding seat 5 is sleeved with the hollow hinge shaft 7. The hollow hinge shaft 7 is sleeved with the positioning pin 41. The positioning pin 41 can enter. The sliding sleeve 51 is inserted into the locking hole 42. The positioning pin 41 may be manually inserted into the locking hole 42, or the unlocking sliding seat 5 may be manually pulled out to allow it to slide.

More preferably, as shown in FIG. 2-3, the push rod 3 is a retractable rod, and includes a rod sleeve 31 connected to the rod base 8. The rod sleeve 31 is fixedly sleeved in the rod base 8, and the rod sleeve 31 is sleeved inside. A telescopic rod 32, an end of the telescopic rod 32 protruding into the rod sleeve 31 is provided with a pushing portion 33 capable of pushing the positioning pin 41, and the positioning pin 41 is connected to an elastic member 43 capable of resetting its displacement. In the push rod seat 8, the squeeze push portion 33 may be integrally formed with the telescopic rod 32. When the sliding base 5 slides, the telescopic rod 32 is kept in the lever sleeve 31, and the pushing and pushing portion 33 keeps the pushing and positioning pin 41 away from the connecting rod 11, the elastic member 43 is compressed, and when the sliding base 5 slides to the position of the locking hole 42, it pulls Out of the telescopic rod 32, the pushing and pushing part 33 releases the positioning pin 41, the elastic member 43 is reset, the pushing and pushing pin 41 is inserted into the locking hole 42, and the sliding seat 5 is locked, limiting its sliding. The push rod 3 rotates to raise the seat 2 during the sliding process.

The push rod base 8 can also be hinged in the two sleeves 53 of the sliding base 5 through two hollow hinge shafts 7. The elastic member 43 is provided in the push rod base 8 and is located between the two hollow hinge shafts 7. The hollow hinge shaft 7 is reset, as shown in FIG. 4.

Further, the same axial bottom end of the push rod seat 8 as the push rod 3 is provided with a through hole 82, which is convenient for increasing the push and push stroke of the push and push portion 33. The push and push portion 33 can pass through the through hole 82 and extend outward. Out, guarantee the unlock effect.

The pressing portion 33 has an inclined surface or a curved surface that can be in contact with the positioning pin 41. The positioning pin 41 is raised and loosened, and the positioning pin 41 is pushed downward. The pressing portion 33 is preferably a tapered shape.

When the push rod 3 is retractable, the handle 34 is provided at the free end of the retractable rod 32, and the seat 2 is provided with an armrest 21 opposite to the handle 34. Further, the telescopic rod 32 includes a first telescopic rod 321 and a second telescopic rod 322 from the outside to the inside, the handle 34 is disposed on the second telescopic rod 322 extending at the upper end, and the squeeze part 33 is disposed at the lower end of the first telescopic rod 321 at the lower end. . A locking structure is provided between the lever sleeve 31 and the telescopic rod 32, and between the first telescopic rod 321 and the second telescopic rod 322 to fix the telescopic state.

When seat 2 is in the low position, sliding seat 5 is located at the end opposite to the free end of push rod 3. Push rod 3 is folded between wheel frame 1 and seat 2. Squeeze push portion 33 extends through through hole 82, and push pin 41 It is in an unlocked state (as shown in FIG. 5). When it is necessary to raise seat 2, pull the push rod 3 to slide, and at the same time, rotate the push rod 3 to raise the seat 2. When the slide seat 5 slides to the other end, the positioning pin 41 Align with the locking hole 42, unlock the telescopic lever 32 and pull it out, so that the pushing and pushing portion 33 rises and comes out of contact with the positioning pin 41, unlocks the positioning pin 41, returns to the spring, pushes the positioning pin 41 into the locking hole 42, and fixes the sliding seat 5 Position to prevent seat 2 from descending. When descending, unlock the telescopic rod 32 and push down to push the pusher 33 to press the positioning pin 41 out of the locking hole 42 to slide the pusher 3 to lower the seat 2 and fold the pusher 3 to the seat 2. And the wheel carrier 1.

The trailer for the trolley of the present invention can be used alone, as shown in FIG. 2; as a child stroller, it can also be used after being hung on the trolley 100 through auxiliary tools such as connectors or ropes, as shown in FIG. 6, when folded After being hung on the trolley 100 in the state, the child can sit in the trolley 100, and the older child can stand on seat 2. After being hung on the trolley 100 with the seat 2 raised, the older child can sit on the seat 2 with the back With the handle 34, the handrail 21 is relaxed, comfortable and safe, as shown in FIG.

Claims

The trailer for trolleys is characterized by comprising a wheel frame (1), wherein the wheel frame (1) is provided with an adjustable seat (2) and a push rod (3) capable of sliding in the direction of wheel movement in the front and rear. The putter (3) can be folded between the wheel frame (1) and the seat (2).
The trailer for hand truck according to claim 1, characterized in that said push rod (3) drives said seat (2) to move up and down, and said push rod (3) is arranged between the push rod (3) and the wheel frame (1). There is a lock structure (4) that locks the push rod (3) when the seat (2) is raised to restrict the sliding of the push rod (3).
The trailer for hand truck according to claim 2, characterized in that the wheel frame (1) comprises a connecting rod (11) for connecting the front and rear wheels, and the connecting rod (11) is provided with a slideable along it. The sliding base (5), the push rod (3) and the sliding base (5) are hinged.
The trailer for trolley according to claim 3, characterized in that one end of the bottom of the seat (2) is hinged to the free end of the push rod (3), and the other end or the middle of the bottom of the seat (2) passes The lifting rod (6) is hinged to the middle of the push rod (3).
The trailer for hand truck according to claim 4, characterized in that the locking structure (4) comprises a positioning pin (41) provided on the sliding seat (5), and the connecting rod (11) is provided There is a locking hole (42) for locking the sliding seat (5) in cooperation with the positioning pin (41).
The trailer for hand truck according to claim 5, characterized in that the sliding base (5) is provided with a push rod base (8) connected to the push rod (3), and the push rod base (8) ) The sliding seat (5) is articulated by a hollow hinge shaft (7), and the outer surface of the push rod seat (8) is circumferentially provided with a through groove communicating with its inner cavity and the inner cavity of the hollow hinge shaft (7) ( 81), the positioning pin (41) is L-shaped, and is sleeved in the hollow hinge shaft (7) and protrudes from the through groove (81).
The trailer for hand truck according to claim 6, characterized in that the push rod (3) is a telescopic rod and comprises a rod cover (31) connected to the push rod base (8), and the rod cover ( 31) A telescopic rod (32) is sleeved inside, and an end of the telescopic rod (32) protruding into the rod sleeve (31) is provided with a squeezing and pushing part (33) capable of squeezing and pushing the positioning pin (41), The positioning pin (41) is connected with an elastic member (43) capable of resetting its displacement.
The trailer for hand truck according to claim 7, characterized in that the squeeze part (33) has an inclined surface or a curved surface that can interfere with the positioning pin (41).
The trailer for hand truck according to claim 1, characterized in that the free end of the push rod (3) is provided with a handle (34), and the seat (2) is provided with the handle (34). Opposite armrest (21).
The trailer for hand truck according to claim 7, characterized in that a handle (34) is provided at the free end of the telescopic rod (32), and the seat (2) is provided opposite to the handle (34) Armrests (21).