WO2022036727A1

WO2022036727A1 - Sliding wheel folding support for scooter for children

Info

Publication number: WO2022036727A1
Application number: PCT/CN2020/110978
Authority: WO
Inventors: 朱蕴石
Original assignee: 太仓世纪桥工商事务所
Priority date: 2020-08-21
Filing date: 2020-08-25
Publication date: 2022-02-24
Also published as: CN111924035B; CN111924035A

Abstract

A sliding wheel folding support for a scooter for children, the support comprising sliding wheels (36), a folding base (31), folding arms (32) and quick-mounting mechanisms (33), wherein a mounting recess (34) is concavely provided in the lower surface of the folding base (31); two folding arms (32) are provided and are respectively rotatably arranged at two ends of the mounting recess (34) by means of rotating shafts; the quick-mounting mechanisms (33) are respectively arranged at the ends of the folding arms (32); when unfolded, the folding arms (32) protrude out of two ends of the folding base (31); and when folded, the folding arms (32) are hidden in the mounting recess (34). The sliding wheel folding support is simple in terms of structure and is convenient to operate, quick folding and unfolding of the folding arms (32) can be realized, and quick mounting of the sliding wheels (36) is realized. The principle of like poles of magnets repelling each other is ingeniously used for the quick-mounting mechanisms (33), such that a locking block (334) and a connecting hole (363) are quickly aligned and mounted; moreover, the locking of the folding arms (32) during folding is realized by utilizing the quick-mounting mechanisms (33).

Description

A pulley folding bracket for children's trolley

technical field

The invention relates to the field of children's toys, in particular to a pulley folding bracket for children's trolleys.

Background technique

Children's childhood world is rich and colorful. Parents usually carry a pulley when they go out to play and travel. The child sits on the pulley and moves forward by swinging his legs. After playing for a period of time, the child does not want to continue to play; and the general structure of the pulley It is the body and the pulleys arranged in the front and rear of the body, and the pulleys usually protrude from the body, which will greatly increase the volume of the pulley; therefore, the wheels of the pulley need to be folded in the body to reduce the volume of the pulley.

SUMMARY OF THE INVENTION

In view of the defects of the above prior art, the main purpose of the present invention is to overcome the deficiencies of the prior art, and discloses a pulley folding bracket for a children's trolley, which includes a pulley, a folding base, a folding arm and a quick installation mechanism, The lower surface of the folding base is provided with a concave installation groove, the folding arms are provided with two, which are respectively arranged at both ends of the installation groove through the rotation of the rotating shaft, and the quick installation mechanism is provided at the end of the folding arm; unfolding; When folded, the folding arms protrude from both ends of the folding base; when folded, the folding arms are hidden in the installation grooves;

The quick-loading mechanism includes a connecting shaft, a plug-in block, an isolation sleeve and a locking block, the connecting shaft is fixedly arranged on the folding arm, and one end of the connecting shaft is recessed with a mounting hole, and the mounting hole is a rectangular parallelepiped structure , and set through guide holes at both ends, the lock block is slidably arranged in the guide holes at both ends, the isolation sleeve is arranged in the installation hole, and is fixedly connected with the installation hole, the The plug-in block includes a block body matched with the inner hole of the isolation sleeve and a magnet arranged at the end of the block body, the plug-in block is inserted into the isolation sleeve, and the lock block is a magnet, when the magnet When the magnetic pole is the same as that of the lock block, the lock block protrudes from the guide hole; when the magnetic pole is opposite, the lock block is hidden in the guide hole, and the pulley is sleeved on the connecting shaft, through The lock block is connected with the pulley.

In one embodiment, the pulley includes a connecting portion and a rolling portion, the rolling portion is rollingly connected to the connecting portion through a bearing, and the connecting portion is connected to the quick-release mechanism.

In one embodiment, the magnet is in clearance fit with the spacer sleeve, and the block body is in tight fit with the spacer sleeve.

In one embodiment, the lock block includes a lock block body and a locking portion, the locking portion is provided on the lock block body and has a stepped structure, and the guide hole is a stepped hole matched with the lock block. , the lock block body is a magnet.

In one embodiment, the guide hole is a rectangular parallelepiped hole-like structure.

In one embodiment, a positioning plane is symmetrically set on the side wall of the connecting shaft, and the through hole of the pulley is matched with the connecting shaft.

In one embodiment, a fixing hole is provided on the inner wall of the installation slot, and the fixing hole corresponds to the position of the locking block when the folding arm is in the folded position.

In one embodiment, the folding wheel frame further includes a C-shaped clamp, and four C-shaped clamps are provided, which are respectively arranged on both sides of the rotation center of the folding arm, and are used for fixing the folding arm, prevent it from turning.

The present invention obtains beneficial effects:

The invention has simple structure and convenient operation, can realize the rapid folding and unfolding of the folding arm, and realize the rapid installation of the pulley. The quick-loading mechanism cleverly uses the principle that the same poles of the magnets repel each other to realize the quick alignment and installation of the lock block and the connecting hole; at the same time, the quick-loading mechanism is used to realize the locking of the folding arm when it is folded.

Description of drawings

Fig. 1 is a kind of structure schematic diagram of the unfolded state of a pulley folding bracket for a children's trolley according to the present invention;

Fig. 2 is a kind of structural schematic diagram of the unfolded state of a pulley folding bracket for children's trolley of the present invention;

3 is a schematic structural diagram of a folded state of a pulley folding bracket for a children's trolley according to the present invention;

4 is a schematic diagram of the connection between the quick-installation mechanism and the pulley;

Fig. 5 is the sectional view of the connection of the quick assembly mechanism and the pulley;

FIG. 6 is a schematic structural diagram of a plug-in block;

Fig. 7 is the structural representation of lock block;

The reference numbers are as follows:

31. Folding base, 32, Folding arm, 33, Quick release mechanism, 34, Second installation slot, 35, C-shaped clamp, 36, Pulley, 37, Fixing hole, 331, Connecting shaft, 332, Plug-in block, 333, isolation sleeve, 334, lock block, 335, block body, 336, magnet, 337, lock block body, 338, locking part, 339, positioning plane, 361, connecting part, 362, rolling part, 363, adjusting hole.

detailed description

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

A pulley folding bracket for a children's trolley, as shown in Figures 1-7, includes a pulley 36, a folding base 31, a folding arm 32 and a quick installation mechanism 33, the lower surface of the folding base 31 is recessed with a mounting groove 34, and the folding arm 32 is provided with two, which are respectively arranged at both ends of the installation groove 34 through the rotation of the rotating shaft, and the quick-release mechanism 33 is arranged at the end of the folding arm 32; when unfolded, the folding arm 32 protrudes from both ends of the folding base; when folded, the folding The arm 32 is hidden in the installation groove 34 ; the pulley 36 is installed on the quick installation mechanism 33 .

Specifically, as shown in FIGS. 1-7 , the quick installation mechanism 33 includes a connecting shaft 331 , a plug-in block 332 , an isolation sleeve 333 and a locking block 334 , and the connecting shaft 331 is fixedly arranged on the folding arm 32 , which can be welded by welding Connection can also be an integral structure. One end of the connecting shaft 331 is provided with a concave mounting hole, the mounting hole is of a rectangular parallelepiped structure, and two ends of the mounting hole are provided with penetrating guide holes. The installation holes are fixedly connected. The plug-in block 332 includes a block body 335 matched with the inner hole of the isolation sleeve and a magnet 336 arranged at the end of the block body. The plug-in block 332 is inserted into the isolation sleeve 333, and the lock block 334 is a magnet. When the magnet 336 When the magnetic pole of the lock block 334 is the same, the lock block 334 protrudes from the guide hole; when the magnetic pole is opposite, the lock block 334 is hidden in the guide hole. The pulley 36 includes a connecting portion 361 and a rolling portion 362 , the rolling portion 362 is rollingly connected to the connecting portion 361 through a bearing, and the connecting portion 361 is connected to the quick-release mechanism 33 . The connecting portion 361 is axially provided with a through hole penetrating through, and a connecting hole 363 is disposed in the through hole. When the pulley 36 is connected with the quick-installing mechanism 33 , the locking block 334 is inserted into the connecting hole 363 . When installing the pulley 36, insert the plug-in block 332 so that the magnetic poles of the plug-in block 332 and the lock blocks 334 on both sides are opposite, and the lock blocks 334 are hidden in the guide holes, and then the pulley is sleeved on the connecting shaft 331, and the lock blocks are 334 corresponds to the connection hole 363 in the pulley 36, remove the plug block 332, rotate 180° and insert it, so that the plug block 332 has the same magnetic pole as the lock blocks 334 on both sides, and the lock blocks 334 are pushed out of the guide holes and inserted into the connection of the pulley 36. In the hole 363, the quick installation of the pulley 36 is completed; when disassembling, it is only necessary to change the magnetic pole of the plug block 332 to attract the lock block 334, so that the lock block 334 is hidden in the guide hole, and the pulley 36 can be removed. In addition, since the connection hole 363 cannot be observed after the pulley 36 is inserted into the connecting shaft 331, the installation is inconvenient. However, for the principle that the magnets repel each other with the same poles, the magnetic pole of the plug block 332 only needs to be changed after the pulley 36 is inserted. The lock block 334 is pushed out. At this time, the lock block 334 is fixed on the inner wall of the through hole of the pulley 36. It is only necessary to adjust the position of the pulley 36 until the sound of “click” is heard, which means that the lock block 334 is inserted inside the connecting hole 363 of the pulley 36 .

In the above-mentioned embodiment, as shown in FIGS. 1-7 , the magnet 336 is in clearance fit with the spacer sleeve 333 , and the block body 335 is in tight fit with the spacer sleeve 333 . Preferably, the block body 335 is made of plastic, because plastic is easier to be compressed than metal, therefore, the insertion and removal of the block 332 is more convenient.

In one embodiment, as shown in FIGS. 1-9 , the lock block 334 includes a lock block body 337 and a locking portion 338 . The locking portion 338 is provided on the lock block body 337 and is in a stepped structure, and the guide hole is for matching with the lock block. The stepped hole of the lock block body 337 is a magnet. The guide hole of the stepped structure is used to cooperate with the isolation sleeve 333 to ensure that the lock block 334 is located in the guide hole and will not be separated from the connecting shaft 331 . Preferably, the guide hole is a rectangular parallelepiped hole-like structure.

In one embodiment, as shown in FIGS. 1-7 , a positioning plane 339 is symmetrically disposed on the side wall of the connecting shaft 331 , and the through hole of the front wheel 4 is matched with the connecting shaft 331 . That is, the through hole is provided with a plane matching with the positioning plane 339, and when the two planes fit together, it is ensured that the locking block 334 corresponds to the connecting hole 363.

In a preferred embodiment, as shown in FIGS. 1-7 , the connecting shaft 331 is made of plastic. The isolation sleeve 33 can also be made of plastic, which can reduce the influence on the magnet; of course, other materials that are not attracted by the magnet can also be used.

In one embodiment, as shown in FIGS. 1-7 , the inner wall of the installation slot 34 is provided with a fixing hole 37 , and the fixing hole 37 corresponds to the position of the locking block 334 when the folding arm 32 is in the folded position. Therefore, when the folding arm 32 is in the folding position, the locking block 334 can be pushed out and inserted into the fixing hole to complete the locking of the folding arm 32 and the folding base 31 .

In one embodiment, as shown in FIGS. 1-7 , the folding wheel frame 3 further includes a C-shaped clamp 36, and four C-shaped clamps 36 are provided, which are respectively disposed on both sides of the rotation center of the folding arm 32 for The folding arm 32 is secured against rotation.

When the present invention is in use, as shown in Figures 1-7, it is only necessary to install the pulley folding bracket at the front and rear positions of the pulley, pull out the plug-in block 332, and change the magnetic pole of the magnet 336 relative to the lock block 334, so that the magnetic poles are different, The locking block 334 is attracted and separated from the fixing hole. Rotate the folding arm 32, pull out from the C-shaped clamp 35 on one side and insert into the C-shaped clamp 35 on the other side, to prevent the folding arm from sagging naturally when the pulley is lifted, which affects the normal use of the pulley. Then, the pulley 36 is inserted into the pulley, and the plug block 332 is pulled out again to change the magnetic pole, so that the lock block 334 is inserted into the connection hole 363 of the pulley 36 . When folding, the above steps are reversed, the lower pulley 36 is removed, and then the folding arm 32 is rotated into the installation groove 34 and fixed by the lock block 334 and the C-shaped clamp 35 .

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention; if the present invention is modified or equivalently replaced without departing from the spirit and scope of the present invention, it shall be covered by the protection scope of the claims of the present invention. among.

Claims

A pulley folding bracket for children's trolley is characterized in that it includes a pulley, a folding base, a folding arm and a quick installation mechanism, the lower surface of the folding base is provided with a concave installation groove, and the folding arms are provided with two, respectively passing through The rotating shaft is rotatably arranged at both ends of the installation slot, and the quick-loading mechanism is arranged at the end of the folding arm; when unfolded, the folding arm protrudes from both ends of the folding base; when folded, the folding arm The folding arm is hidden in the installation slot;

The quick-loading mechanism includes a connecting shaft, a plug-in block, an isolation sleeve and a locking block, the connecting shaft is fixedly arranged on the folding arm, and one end of the connecting shaft is recessed with a mounting hole, and the mounting hole is a rectangular parallelepiped structure , and set through guide holes at both ends, the lock block is slidably arranged in the guide holes at both ends, the isolation sleeve is arranged in the installation hole, and is fixedly connected with the installation hole, the The plug-in block includes a block body matched with the inner hole of the isolation sleeve and a magnet arranged at the end of the block body, the plug-in block is inserted into the isolation sleeve, and the lock block is a magnet, when the magnet When the magnetic pole is the same as that of the lock block, the lock block protrudes from the guide hole; when the magnetic pole is opposite, the lock block is hidden in the guide hole, and the pulley is sleeved on the connecting shaft, through The lock block is connected with the pulley.
A pulley folding bracket for a children's trolley according to claim 1, wherein the pulley comprises a connecting part and a rolling part, the rolling part is rollingly connected to the connecting part through a bearing, and the connecting part The part is connected with the quick installation mechanism.
The pulley folding bracket for a children's trolley according to claim 1, wherein the magnet is in clearance fit with the spacer sleeve, and the block body is in tight fit with the spacer sleeve.
A pulley folding bracket for a children's trolley according to claim 1, wherein the lock block comprises a lock block body and a lock part, and the lock part is arranged on the lock block body and is stepped Structure, the guide hole is a stepped hole matched with the lock block, and the lock block body is a magnet.
A pulley folding bracket for a children's trolley according to claim 4, wherein the guide hole is a cuboid hole-shaped structure.
A pulley folding bracket for a children's pulley according to claim 1, wherein a positioning plane is symmetrically arranged on the side wall of the connecting shaft, and the through hole of the pulley is matched with the connecting shaft.
A pulley folding bracket for a children's trolley according to claim 1, wherein a fixing hole is provided on the inner wall of the installation slot, and the fixing hole and the lock when the folding arm is in a folded position The block position corresponds.
A pulley folding bracket for a children's trolley according to claim 1, wherein the folding wheel frame further comprises a C-shaped clamp, and four C-shaped clamps are provided, which are respectively arranged in the folding The two sides of the rotation center of the arm are used to fix the folding arm to prevent it from turning.