CN109927838B

CN109927838B - Foldable trailer of putting

Info

Publication number: CN109927838B
Application number: CN201910144088.7A
Authority: CN
Inventors: 古正煇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-27
Filing date: 2019-02-27
Publication date: 2020-10-23
Anticipated expiration: 2039-02-27
Also published as: CN109927838A

Abstract

The invention discloses a folding type storage trailer which comprises a frame and wheels, wherein the frame comprises an upper support, a middle support and a lower support which are sequentially hinged end to end, each hinged part is provided with a locking mechanism used for locking when the corresponding support is in a folding or opening state, two sides of the bottom of the lower support are respectively provided with a connecting seat, the connecting seats are rotatably connected with wheel shafts, the wheels are detachably connected to two ends of the wheel shafts, and the connecting seats are also provided with foldable base pipes. According to the invention, the frame comprises the upper support, the middle support, the lower support and the base pipe, each support or base pipe can be folded, the wheels can be detached, the overall volume is greatly reduced after folding, and the folding bicycle is convenient to store and carry.

Description

Foldable trailer of putting

Technical Field

The invention relates to a transportation tool, in particular to a folding type storage trailer.

Background

The trailer is a tool commonly used in life and used for transporting goods. Compare direct manual work and carry, utilize and put the thing trailer and transport, can effectively reduce user's intensity of labour. But traditional thing trailer of putting is usually bulky, can occupy more space when depositing, and inconvenient carrying.

Such as: chinese patent publication No. CN2146403, entitled article placing cart, comprises a rack body, a pair of wheels pivoted to the bottom of the rack body, and a handle bar fixed to the rear side of the rack body, wherein the handle bar comprises a handle and two extension bars, the end of each extension bar is lower than the bottom of the rack body, and the outer edge of each wheel is tangent to the plane formed by the extension bars of the handle bar. The utility model discloses a weak point lies in: the storage trolley is large in size, occupies more space when being stored, and is inconvenient to carry.

Disclosure of Invention

The invention aims to solve the problems of large volume, large occupied space during storage and inconvenience in carrying of the existing storage trailer, and provides a folding storage trailer which can reduce the volume of the trailer through folding and effectively solve the problems of large occupied space during storage and inconvenience in carrying.

The purpose of the invention is realized by the following technical scheme: the utility model provides a foldable thing trailer of putting, includes frame, wheel, the frame includes end to end articulated upper bracket, well support and lower carriage in proper order, and every articulated department all is equipped with and is used for carrying out the locking mechanism who locks when the support that corresponds is in folding or open mode, the both sides of lower carriage bottom are provided with the connecting seat respectively, it is connected with the shaft to rotate on the connecting seat, the wheel can be dismantled the both ends of connecting at the shaft, still be provided with folding base pipe on the connecting seat.

According to the foldable bicycle frame, the bicycle frame consists of an upper support, a middle support, a lower support, a base pipe and wheels, wherein the upper support, the middle support and the lower support are sequentially hinged end to end, and two adjacent supports can be folded through relative rotation. The locking mechanism is used for locking when the corresponding bracket is in a folding or unfolding state. The base pipe is arranged at the bottom of the frame and used for supporting articles placed on the frame. When folding, the wheel also can be dismantled, and the wheel of dismantling can be placed in folding frame, like this, has further reduced the whole volume after folding, is convenient for deposit, and also convenient to use person carries simultaneously.

Preferably, the upper bracket is provided with a connecting rod for connecting a bicycle. The connecting rod is used for connecting the bicycle, and whole thing trailer of putting can be towed at the bicycle rear like this, is convenient for ride passerby and uses.

Preferably, the connecting rod includes a telescopic rod and an outer tube, one end of the outer tube is fixed on the upper support, the outer tube is sleeved on the telescopic rod, and a locking ring for locking the telescopic rod is arranged at one end of the outer tube facing the telescopic rod. Through the relative movement between the outer tube and the telescopic rod, the connecting rod has a telescopic function, so that the bicycle telescopic connecting rod can be better matched with a bicycle when being connected with the bicycle.

Preferably, the base pipe is provided with a foot support. When the storage trailer is placed on the bottom surface, the whole frame is supported by the wheels and the foot supports together, so that the frame can be kept stable.

Preferably, the base pipe is a U-shaped pipe, the connecting seat is provided with a hinge shaft, two ends of the base pipe are respectively and rotatably connected to the hinge shaft, pipe orifices at two ends of the base pipe are provided with slidable positioning blocks, the positioning blocks are provided with strip holes, and the hinge shaft penetrates through the strip holes; the connecting seat is provided with a first positioning groove and a second positioning groove corresponding to the positioning block; a first spring is arranged between one end of the positioning block facing the interior of the base pipe and the inner wall of the base pipe; one end of the positioning block, facing the inside of the base pipe, is connected with a brake cable, and one end of the brake cable extends out of the base pipe and is connected with the holding rod; when the base tube is in an opened or folded state, the front ends of the positioning blocks respectively extend into the first positioning groove and the second positioning groove. When the base pipe is in an open state, the front end of the positioning block extends into the first positioning groove, at the moment, the base pipe is in the open state, and the positioning block locks the base pipe, so that the base pipe is fixed. When the folding machine is folded, the holding rod is pulled outwards, the holding rod drives the brake cable to move outwards, the brake cable drives the positioning block to retract inwards, the positioning block moves out of the first positioning groove, the base pipe is unlocked, and a user rotates the base pipe and rotates the base pipe to a folding position; when the base pipe is rotated to the folding position, the positioning block is over against the second positioning groove, the user loosens the holding rod, and the positioning block automatically extends into the second positioning groove under the action of the first spring, so that the base pipe is locked, and the base pipe is folded. The base tube is simple and convenient to fold and convenient for a user to operate.

Preferably, the wheel is coaxially provided with a connecting shaft, one end, far away from the wheel, of the connecting shaft is provided with a sleeve, the sleeve is sleeved at the end part of the wheel shaft, and a detachable connecting mechanism is arranged between the sleeve and the wheel shaft.

Preferably, the detachable connecting mechanism comprises a first sliding cavity and a second sliding cavity which are arranged on the sleeve, the first sliding cavity and the second sliding cavity are both arranged along the radial direction of the sleeve, the first sliding cavity and the second sliding cavity are coaxially arranged, the first sliding cavity is positioned on the outer side of the second sliding cavity, a magnetic block capable of sliding along the radial direction of the sleeve is arranged in the first sliding cavity, one end, close to the outer side of the sleeve, of the magnetic block is connected with a pressing rod, one end of the pressing rod extends out of the first sliding cavity, and a tension spring is arranged between one end, close to the outer side of the sleeve, of the magnetic block and the end part of the first sliding cavity; one end of the second sliding cavity, which is close to the wheel shaft, is provided with an opening, the opening faces the outer ring surface of the wheel shaft, a locking block which can be attracted by the magnetic block is arranged in the second sliding cavity, a second spring is arranged between one end, which faces the magnetic block, of the locking block and the end part of the second sliding cavity, and a locking groove corresponding to the locking block is arranged on the outer ring surface of the wheel shaft; when the connecting shaft is connected with the wheel shaft, the front end of the locking block extends into the locking groove. The working principle of the detachable connecting mechanism is as follows: when the connecting shaft and the wheel shaft are in a connecting state, the front end of the locking block extends into the locking groove, the magnetic block is positioned at the position of the principle locking block under the action of the tension spring, and the wheel shaft and the connecting shaft are in a locking state; when the wheel is disassembled, the pressing rod is pressed down, the magnetic block moves to one end, close to the locking block, of the first sliding cavity under the driving of the pressing rod, the magnetic block and the locking block are located at the position closest to each other, the locking block moves upwards under the attraction effect of the magnetic force of the magnetic block, the locking block is separated from the locking groove, the connecting shaft and the wheel shaft are located in an unlocking state, and the connecting shaft and the wheel shaft are pulled out to achieve the disassembling of the wheel. When the wheel is installed, the pressing rod is pressed down, the magnetic force is pushed to one end, close to the locking block, of the first sliding cavity, the locking block moves upwards under the attraction effect of the magnetic force of the magnetic block, then the wheel shaft is inserted into the sleeve, the locking groove is aligned to the locking block, the pressing rod is loosened, the magnetic block is far away from the locking block under the action of the tension spring, in the process that the locking block is far away from the magnetic block, the attraction force of the magnetic block on the locking block is reduced, the locking block stretches into the locking groove under the action of the second spring, and locking between the connecting shaft and the wheel shaft is achieved. When the wheel is disassembled, the operation process is simple and convenient, and the use is convenient for users.

Preferably, a cavity of the second sliding cavity, which is close to one side of the first sliding cavity, is a first cavity, and the other side of the second sliding cavity is a second cavity, wherein the diameter of the first cavity is larger than that of the second cavity; a flange is arranged at one end, close to the magnetic block, of the locking block, the flange is located in the first cavity, and the diameter of the flange is larger than that of the second cavity. Because the diameter of flange is greater than the diameter of second cavity for the flange can block in the junction of first cavity and second cavity, thereby plays limiting displacement to the locking piece.

Preferably, the locking block is made of iron. The locking block is made of iron, so that the locking block can be attracted by the magnetic block, and meanwhile, the material is cheap and easy to obtain.

The invention has the beneficial effects that: according to the invention, the frame comprises the upper support, the middle support, the lower support and the base pipe, each support or base pipe can be folded, the wheels can be detached, the overall volume is greatly reduced after folding, and the folding bicycle is convenient to store and carry.

Drawings

Fig. 1 is a schematic front structural view of the present invention.

Fig. 2 is a schematic diagram of the back structure of the present invention.

Fig. 3 is a schematic structural view of the connecting rod.

Fig. 4 is a schematic view of the connection of the base pipe and the lower bracket.

Fig. 5 is a schematic view of the folding of the base tube.

Fig. 6 is a schematic view of a wheel when connected to an axle.

Fig. 7 is an enlarged view of a portion a of fig. 6.

Fig. 8 is a schematic view of the folded invention.

FIG. 9 is a schematic view of the present invention shown attached to a bicycle.

In the figure: 1. the bicycle comprises a connecting rod, 2, an upper bracket, 3, a middle bracket, 4, a lower bracket, 5, wheels, 6, a base pipe, 7, a foot support, 8, a first locking mechanism, 9, a second locking mechanism, 10, canvas, 11, a wheel shaft, 12, an outer pipe, 13, a telescopic rod, 14, a locking ring, 15, a connecting seat, 16, a brake cable, 17, a holding rod, 18, a hinge shaft, 19, a first spring, 20, a positioning block, 21, a long hole, 22, a first positioning groove, 23, a second positioning groove, 24, a jack, 25, a shaft hole, 26, a connecting shaft, 27, a pressure rod, 28, a magnetic block, 29, a locking block, 30, a tension spring, 31, a second spring, 32, a first sliding cavity, 33, a second sliding cavity, 34 and a bicycle.

Detailed Description

The invention is further described by the following detailed description in conjunction with the accompanying drawings.

Example (b): as shown in fig. 1 to 9, a foldable trailer for placing articles comprises a frame and wheels 5. The canvas 10 is arranged on the frame. The frame comprises an upper bracket 2, a middle bracket 3 and a lower bracket 4 which are sequentially hinged end to end. Each hinged part is provided with a locking mechanism used for locking when the corresponding bracket is in a folding or unfolding state. The hinge joint of the upper bracket 2 and the middle bracket 3 is provided with a first locking mechanism 8, and the hinge joint of the middle bracket 3 and the lower bracket 4 is provided with a second locking mechanism 9. The upper bracket 2 is provided with a connecting rod 1 for connecting a bicycle. The connecting rod 1 comprises a telescopic rod 13 and an outer tube 12, and one end of the outer tube 12 is fixed on the upper bracket 2. The outer tube 12 is sleeved on the telescopic rod 13. The end of the outer tube 12 facing the telescopic rod 13 is provided with a locking ring 14 for locking the telescopic rod 13. The front end of the telescopic rod 13 is connected with the bicycle through a connecting mechanism.

The two sides of the bottom of the lower bracket 4 are respectively provided with a connecting seat 15. The connecting socket 15 is provided with an insertion hole 24. The end of the lower bracket 4 is plugged into the jack 24. The connecting base 15 is provided with a shaft hole 25. The axle hole 25 is rotatably connected with an axle 11. The wheel shaft 11 passes through the shaft holes on the two side connecting seats 15. The connecting seat 15 is provided with a foldable base tube 6.

The base tube 6 is a U-shaped tube. The connecting seat 15 is provided with a hinge shaft 18. Both ends of the base pipe 6 are respectively rotatably connected to the hinge shafts 18. The pipe orifices at the two ends of the base pipe 6 are provided with a slidable positioning block 20. The positioning block 20 is provided with a long hole 21. The hinge shaft 18 passes through the elongated hole 21. The connecting base 15 is provided with a first positioning groove 22 and a second positioning groove 23 corresponding to the positioning block 20. A first spring 19 is arranged between one end of the positioning block 20 facing the inside of the base pipe 6 and the inner wall of the base pipe 6. The inner wall of the base tube 6 is provided with an annular boss. The first spring 19 is disposed between the annular boss and the positioning block 20. The brake cable 16 is connected to one end of the positioning block 20 facing the inside of the base pipe 6. One end of the brake cable 16 extends out of the base tube 6 and is connected to the grip 17. The holding rod 17 is a round rod-shaped structure. When the base tube 6 is in the opened or folded state, the front ends of the positioning blocks 20 respectively extend into the first positioning grooves 22 and the second positioning grooves 23. When the base pipe is in an open state, the front end of the positioning block extends into the first positioning groove, at the moment, the base pipe is in the open state, and the positioning block locks the base pipe, so that the base pipe is fixed. When the folding machine is folded, the holding rod is pulled outwards, the holding rod drives the brake cable to move outwards, the brake cable drives the positioning block to retract inwards, the positioning block moves out of the first positioning groove, the base pipe is unlocked, and a user rotates the base pipe and rotates the base pipe to a folding position; when the base pipe is rotated to the folding position, the positioning block is over against the second positioning groove, the user loosens the holding rod, and the positioning block automatically extends into the second positioning groove under the action of the first spring, so that the base pipe is locked, and the base pipe is folded. The base tube is simple and convenient to fold and convenient for a user to operate. The base tube 6 is provided with a foldable foot support 7. The base tube 6 is provided with a foot support 7. The foot support 7 is a U-shaped tube.

The wheel 5 is coaxially provided with a connecting shaft 26. The end of the connecting shaft 26 remote from the wheel 5 is provided with a sleeve. The sleeve is sleeved on the end of the wheel shaft 11. A detachable connecting mechanism is arranged between the sleeve and the wheel shaft 11. The detachable connection mechanism comprises a first sliding chamber 32 and a second sliding chamber 33 provided on the sleeve. The first sliding chamber 32 and the second sliding chamber 33 are circular in cross section. The first sliding chamber 32 and the second sliding chamber 33 are both disposed along the radial direction of the sleeve. The first sliding chamber 32 and the second sliding chamber 33 are coaxially disposed. The first sliding chamber 32 is located outside the second sliding chamber 33. The first sliding cavity 32 is provided with a magnetic block 28 which can slide along the radial direction of the sleeve. The magnetic block 28 is a cylinder. One end of the magnetic block 28 close to the outer side of the sleeve is connected with a pressure lever 27. One end of the pressure rod 27 extends out of the first sliding cavity 32. A tension spring 30 is arranged between one end of the magnetic block 28 close to the outer side of the sleeve and the end part of the first sliding cavity. The second sliding chamber 33 is open at an end close to the hub 11, the opening being directed to the outer circumferential surface of the hub 11. The second sliding chamber 33 is provided with a locking block 29 which can be attracted by the magnetic block 28. The locking block 29 is a cylinder. In this embodiment, the locking block 29 is made of iron. The cavity of the second sliding cavity 33 close to one side of the first sliding cavity is a first cavity, and the other side is a second cavity. The diameter of the first cavity is larger than that of the second cavity. The end of the locking block 29 adjacent to the magnetic block 28 is provided with a flange. The flange is located in the first cavity. The flange has a diameter greater than a diameter of the second cavity. A second spring 31 is arranged between one end of the locking block 29 facing the magnetic block 28 and the end of the second sliding cavity 33. The outer circumferential surface of the hub 11 is provided with locking grooves corresponding to the locking blocks 29. The cross section of the locking groove is circular. The diameter of the locking groove is larger than the diameter of the locking block 29. When the connecting shaft 26 is connected with the wheel shaft 11, the front end of the locking block 29 extends into the locking groove. The working principle of the detachable connecting mechanism is as follows: when the connecting shaft and the wheel shaft are in a connecting state, the front end of the locking block extends into the locking groove, the magnetic block is positioned at the position of the principle locking block under the action of the tension spring, and the wheel shaft and the connecting shaft are in a locking state; when the wheel is disassembled, the pressing rod is pressed down, the magnetic block moves to one end, close to the locking block, of the first sliding cavity under the driving of the pressing rod, the magnetic block and the locking block are located at the position closest to each other, the locking block moves upwards under the attraction effect of the magnetic force of the magnetic block, the locking block is separated from the locking groove, the connecting shaft and the wheel shaft are located in an unlocking state, and the connecting shaft and the wheel shaft are pulled out to achieve the disassembling of the wheel. When the wheel is installed, the pressing rod is pressed down, the magnetic force is pushed to one end, close to the locking block, of the first sliding cavity, the locking block moves upwards under the attraction effect of the magnetic force of the magnetic block, then the wheel shaft is inserted into the sleeve, the locking groove is aligned to the locking block, the pressing rod is loosened, the magnetic block is far away from the locking block under the action of the tension spring, in the process that the locking block is far away from the magnetic block, the attraction force of the magnetic block on the locking block is reduced, the locking block stretches into the locking groove under the action of the second spring, and locking between the connecting shaft and the wheel shaft is achieved. When the wheel is disassembled, the operation process is simple and convenient, and the use is convenient for users.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a foldable thing trailer of putting, includes frame, wheel (5), its characterized in that: the bicycle frame comprises an upper support (2), a middle support (3) and a lower support (4) which are sequentially hinged end to end, each hinged part is provided with a locking mechanism for locking when the corresponding support is in a folding or opening state, two sides of the bottom of the lower support (4) are respectively provided with a connecting seat (15), the connecting seats (15) are rotatably connected with a wheel shaft (11), wheels (5) are detachably connected to two ends of the wheel shaft (11), and the connecting seats (15) are also provided with foldable base pipes (6); a connecting shaft (26) is coaxially arranged on the wheel (5), a sleeve is arranged at one end, far away from the wheel (5), of the connecting shaft (26), the sleeve is sleeved at the end part of the wheel shaft (11), and a detachable connecting mechanism is arranged between the sleeve and the wheel shaft (11); the detachable connecting mechanism comprises a first sliding cavity (32) and a second sliding cavity (33) which are arranged on the sleeve, the first sliding cavity (32) and the second sliding cavity (33) are arranged along the radial direction of the sleeve, the first sliding cavity (32) and the second sliding cavity (33) are coaxially arranged, the first sliding cavity (32) is positioned on the outer side of the second sliding cavity (33), a magnetic block (28) capable of sliding along the radial direction of the sleeve is arranged in the first sliding cavity (32), one end, close to the outer side of the sleeve, of the magnetic block (28) is connected with a pressure lever (27), one end of the pressure lever (27) extends out of the first sliding cavity (32), and a tension spring (30) is arranged between one end, close to the outer side of the sleeve, of the magnetic block (28) and the end of the first sliding cavity; one end of the second sliding cavity (33) close to the wheel shaft (11) is opened, the opening faces to the outer annular surface of the wheel shaft (11), a locking block (29) capable of being attracted by the magnetic block (28) is arranged in the second sliding cavity (33), a second spring (31) is arranged between one end, facing the magnetic block (28), of the locking block (29) and the end of the second sliding cavity (33), and a locking groove corresponding to the locking block (29) is formed in the outer annular surface of the wheel shaft (11); when the connecting shaft (26) is connected with the wheel shaft (11), the front end of the locking block (29) extends into the locking groove; a cavity body on one side of the second sliding cavity (33) close to the first sliding cavity is a first cavity body, the other side of the second sliding cavity is a second cavity body, and the diameter of the first cavity body is larger than that of the second cavity body; a flange is arranged at one end, close to the magnetic block (28), of the locking block (29), the flange is located in the first cavity, and the diameter of the flange is larger than that of the second cavity; the locking block (29) is made of iron.

2. A foldable storage trailer according to claim 1, characterised in that the upper frame (2) is provided with a connecting rod (1) for connecting to a bicycle.

3. The foldable storage trailer according to claim 2, wherein the connecting rod (1) comprises a telescopic rod (13) and an outer tube (12), one end of the outer tube (12) is fixed on the upper bracket (2), the outer tube (12) is sleeved on the telescopic rod (13), and one end of the outer tube (12) facing the telescopic rod (13) is provided with a locking ring (14) for locking the telescopic rod (13).

4. A foldable storage trailer according to claim 1, characterised in that the base tube (6) is provided with a foot support (7).

5. The foldable storage trailer according to claim 1, wherein the base tube (6) is a U-shaped tube, the connecting base (15) is provided with a hinge shaft (18), two ends of the base tube (6) are respectively and rotatably connected to the hinge shaft (18), the tube openings at two ends of the base tube (6) are provided with slidable positioning blocks (20), the positioning blocks (20) are provided with elongated holes (21), and the hinge shaft (18) passes through the elongated holes (21); a first positioning groove (22) and a second positioning groove (23) which correspond to the positioning block (20) are arranged on the connecting seat (15); a first spring (19) is arranged between one end of the positioning block (20) facing the interior of the base pipe (6) and the inner wall of the base pipe (6); one end, facing the inside of the base tube (6), of the positioning block (20) is connected with a brake cable (16), and one end of the brake cable (16) extends out of the base tube (6) and is connected with a holding rod (17); when the base tube (6) is in an opened or folded state, the front ends of the positioning blocks (20) respectively extend into the first positioning groove (22) and the second positioning groove (23).