CN114475533A - Guide wheel for trailer - Google Patents
Guide wheel for trailer Download PDFInfo
- Publication number
- CN114475533A CN114475533A CN202210052399.2A CN202210052399A CN114475533A CN 114475533 A CN114475533 A CN 114475533A CN 202210052399 A CN202210052399 A CN 202210052399A CN 114475533 A CN114475533 A CN 114475533A
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- Prior art keywords
- bolt
- guide wheel
- shaped
- shaped plate
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000003825 pressing Methods 0.000 claims abstract description 50
- 230000006835 compression Effects 0.000 claims abstract description 12
- 238000007906 compression Methods 0.000 claims abstract description 12
- 210000000078 claw Anatomy 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting
- B60S9/04—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting mechanically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/04—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors
- B60B33/06—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors mounted retractably
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/32—Vehicles adapted to transport, to carry or to comprise special loads or objects comprising living accommodation for people, e.g. caravans, camping, or like vehicles
- B60P3/36—Auxiliary arrangements; Arrangements of living accommodation; Details
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Transportation (AREA)
- Handcart (AREA)
Abstract
The invention provides a guide wheel for a trailer, which comprises a connecting supporting tube and an extension tube, wherein the bottom end of the extension tube is provided with a bolt fixing supporting seat, and two side surfaces of the bolt fixing supporting seat are rotatably connected with two ends of a U-shaped plate. The inside of bolt fixed bolster is equipped with the baffle, and the baffle is divided into bolt removal district and spring compression district with the inside of bolt fixed bolster, and the bolt runs through bolt removal district, spring compression district and U-shaped board in proper order. The bolt extends and is equipped with the driving lever, and the driving lever is located in the slot that bolt fixed bolster up end was seted up, and the bolt lateral wall of locating in the spring compression district still is equipped with the ring baffle, and the bolt lateral wall cover between baffle and the ring baffle is equipped with the spring. The inner side of the U-shaped plate is also provided with a pressing wheel, the bottom end of the connecting supporting tube is provided with a guide wheel pressing sleeve, and the guide wheel pressing sleeve is arranged right above the pressing wheel. When the telescopic pipe moves upwards, the guide wheel pressing sleeve downwards extrudes the shifting rod to enable the bolt to move leftwards, the limiting of the U-shaped plate is released, the U-shaped plate is reversely rotated and retracted, and the guide wheel is automatically retracted and unfolded.
Description
Technical Field
The invention relates to the technical field of caravan manufacturing, in particular to a guide wheel for dragging a caravan.
Background
The motor home is more and more favored by people as a travel product with two functions of 'house' and 'vehicle'. The pull type motor home is a recreational vehicle which is hung at the tail of a tractor in a linkage mode and is dragged by the tractor, the motor home is required to be dragged by the tractor to achieve the walking function and reach an appointed parking place, the tractor is separated from the motor home after the motor home arrives at the parking place, the parking position is not accurate enough, the motor home position is often required to be finely adjusted by a motor home guide wheel due to the fact that the parking terrain is not suitable, the existing motor home guide wheel is inconvenient to receive and place, and the use is influenced.
Disclosure of Invention
The invention aims to solve the technical defects and provides the guide wheel for the trailer, so that the guide wheel not only can provide a supporting and guiding function for the trailer, but also can realize automatic retraction.
Therefore, the invention provides a guide wheel for a trailer, which comprises a connecting support pipe, wherein a telescopic pipe is coaxially sleeved inside the connecting support pipe, a lead screw is connected inside the telescopic pipe in a threaded manner, a driving motor is fixedly arranged at the upper part of the connecting support pipe, and the output end of the driving motor is connected with the lead screw. The bottom of the telescopic pipe is provided with a guide wheel folding and unfolding structure, the guide wheel folding and unfolding structure comprises a U-shaped plate, a bolt fixing and supporting seat and a bolt, the bolt fixing and supporting seat is arranged in a U-shaped opening of the U-shaped plate, the upper end face of the bolt fixing and supporting seat is fixedly connected with the bottom of the telescopic pipe, and the two side faces of the bolt fixing and supporting seat are rotatably connected with the two ends of the U-shaped opening of the U-shaped plate through rotating shafts. The inside of bolt fixed bolster is equipped with the baffle, and the baffle is divided into bolt removal district and spring compression district with the inside cavity of bolt fixed bolster, and the bolt runs through bolt removal district, spring compression district and U-shaped board in proper order to the through-hole of seting up from the U-shaped bottom face of U-shaped board stretches out. The bolt that is located the U-shaped plate open end one end upwards extends and is equipped with the driving lever, and the driving lever card is located in the slot that bolt fixed bolster up end was seted up, and the bolt lateral wall of locating in the spring compression district still is equipped with the ring baffle, and the bolt lateral wall cover between baffle and the ring baffle is equipped with the spring. The inner sides of two ends of a U-shaped opening of the U-shaped plate are rotatably connected with pinch rollers, the bottom end of the connecting supporting tube is connected with a guide wheel pressing sleeve, two ends of the guide wheel pressing sleeve are provided with U-shaped grooves, a pressing claw is formed between the two U-shaped grooves, and the pressing claw is arranged right above the pinch rollers.
Preferably, the upper end of the deflector rod is obliquely arranged in the direction away from the telescopic rod.
Preferably, the inner side wall of the U-shaped plate is further provided with an L-shaped limiting plate, the L-shaped limiting plate is provided with a limiting groove, the limiting groove is communicated with a through hole formed in the U-shaped bottom end face of the U-shaped plate, and an L-shaped folded edge of the L-shaped limiting plate is abutted to the lower end face of the bolt fixing support seat.
Preferably, the bolt is further provided with a fixing hole, the fixing hole is formed in the outer side of the annular baffle, and a limiting fixing shaft is arranged in the fixing hole.
Preferably, the lower end of the U-shaped plate is also connected with a guide wheel supporting plate, and the tail end of the guide wheel supporting plate is rotatably connected with a guide wheel.
Preferably, the outer side wall of the connecting support pipe is also provided with a guide wheel mounting sheet.
The invention provides a guide wheel for a trailer, which has the following beneficial effects:
when the guide wheel is retracted, the driving motor drives the screw rod to rotate, so that the telescopic pipe moves upwards, the guide wheel pressing sleeve downwards extrudes the deflector rod, and the bolt moves leftwards to remove the limit of the U-shaped plate and the bolt fixing support seat in the circumferential direction; meanwhile, the guide wheel pressing sleeve downwards extrudes the pressing wheel, so that the U-shaped plate rotates around the rotating shaft to retract the guide wheel. When the guide wheel is put down, the telescopic pipe is extended, the guide wheel pressing sleeve is retracted, the guide wheel overturns and falls due to gravity, the bolt moves to the right under the action of the elastic force of the spring, the bolt fixing support seat and the U-shaped plate are fixed, and the supporting and guiding effects of the guide wheel are realized.
According to the invention, the left and right movement of the bolt is completed by the matching of the guide wheel pressing sleeve and the bolt, so that the guide wheel is locked or rotated in the circumferential direction, the free retraction and extension of the guide wheel and the supporting and guiding effects are realized, the operation is rapid, simple and convenient, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the connection supporting tube and the telescopic tube of the present invention;
FIG. 3 is a schematic illustration of the leading wheel lock of the present invention;
FIG. 4 is a schematic view of the retraction of the guide wheels of the present invention;
FIG. 5 is another schematic view of the present invention showing the retraction of the guide wheel;
fig. 6 is a schematic view of the fully retracted configuration of the guide wheel of the present invention.
The labels in the figure are: 1. the device comprises a connecting support pipe, 11 driving motors, 12 guide wheel pressing sleeves, 121 pressing claws, 2 telescopic pipes, 3 lead screws, 4U-shaped plates, 41 rotating shafts, 42 guide wheel supporting plates, 43 guide wheels, 44 pressing wheels, 45. L-shaped limiting plates, 5 bolt fixing supporting seats, 51 partition plates, 52 annular baffles, 53 springs, 6 bolts, 61 shift rods and 7 guide wheel mounting plates.
Detailed Description
The invention is further described below in conjunction with the drawings and the specific embodiments to assist in understanding the contents of the invention. The method used in the invention is a conventional method if no special provisions are made; the raw materials and the apparatus used are, unless otherwise specified, conventional commercially available products.
As shown in fig. 1 to 6, the invention provides a guide wheel for a trailer, which comprises a connection support tube 1, wherein a telescopic tube 2 is coaxially sleeved inside the connection support tube 1, a screw rod 3 is connected inside the telescopic tube 2 in a threaded manner, a driving motor 11 is fixedly arranged at the upper part of the connection support tube 1, and the output end of the driving motor 11 is connected with the screw rod 3. Under the action of the driving motor 11, the driving motor 11 drives the screw rod 3 to rotate, and the screw rod 3 can drive the telescopic pipe 2 to move up and down. The bottom end of the extension tube 2 is provided with a guide wheel folding and unfolding structure, the guide wheel folding and unfolding structure comprises a U-shaped plate 4, a bolt fixing and supporting seat 5 and a bolt 6, the bolt fixing and supporting seat 5 is arranged in a U-shaped opening of the U-shaped plate 4, the upper end surface of the bolt fixing and supporting seat is fixedly connected with the bottom end of the extension tube 2, two side surfaces of the bolt fixing and supporting seat are rotatably connected with two ends of the U-shaped opening of the U-shaped plate 4 through a rotating shaft 41, the lower end of the U-shaped plate 4 is also connected with a guide wheel supporting plate 42, and the tail end of the guide wheel supporting plate 42 is rotatably connected with a guide wheel 43; the U-shaped plate 4 can rotate around the rotating shaft 41, so that the guide wheels 43 are retracted.
Specifically, the inside of bolt fixed bolster 5 is equipped with baffle 51, and baffle 51 divide into bolt removal district and spring compression district with the inside cavity of bolt fixed bolster 5, and the both ends face and the baffle 51 of bolt fixed bolster 5 run through the through-hole of seting up coaxial mutual intercommunication, and bolt 6 runs through bolt removal district, spring compression district and U-shaped plate 4 in proper order to the through-hole of seting up from the U-shaped bottom end face of U-shaped plate 4 stretches out. The driving lever 61 is arranged at one end of the bolt 6 at the opening end of the U-shaped plate 4 in an upward extending mode, the driving lever 61 is clamped in the slot formed in the upper end face of the bolt fixed support seat 5, the slot is communicated with the through hole formed in the end face of the bolt fixed support seat 5, and the bolt 6 is convenient to move left and right. The outer side wall of the bolt 6 arranged in the spring compression area is also provided with an annular baffle plate 52, the outer side wall of the bolt 6 between the partition plate 51 and the annular baffle plate 52 is sleeved with a spring 53, one end of the spring 53 is abutted against the partition plate 51, and the other end of the spring 53 is abutted against the annular baffle plate 52. During assembly, in order to install the bolt 6 and the spring 53, the annular baffle plate 52 and the bolt 6 are designed in a split mode, a fixing hole is formed in the bolt 6 on the outer side of the annular baffle plate 52, and a limiting fixing shaft is installed in the fixing hole to limit the annular baffle plate 52. The inner sides of two ends of a U-shaped opening of the U-shaped plate 4 are rotatably connected with a pressing wheel 44, the bottom end of the connection supporting tube 1 is connected with a guide wheel pressing sleeve 12, two ends of the guide wheel pressing sleeve 12 are provided with U-shaped grooves, a pressing claw 121 is formed between the two U-shaped grooves, and the pressing claw 121 is arranged right above the pressing wheel 44.
When the spring 53 is in an unstressed state, the bolt 6 penetrates through the bolt fixed support seat 5 and the U-shaped plate 4 and extends out of a through hole formed in the U-shaped bottom end face of the U-shaped plate 4, the bolt 6 limits the bolt fixed support seat 5 and the U-shaped plate 4 in the circumferential direction, the bolt fixed support seat 5 and the U-shaped plate 4 are fixed together, and the guide wheel 43 is completely unfolded to provide a supporting and guiding effect for the recreational vehicle. When the guide wheel 43 needs to be retracted, the driving motor 11 is started, the driving motor 11 drives the screw rod 3 to rotate, the screw rod 3 drives the telescopic pipe 2 to move upwards, the bottom end of the U-shaped groove of the guide wheel pressing sleeve 12 is in contact with the shifting rod 61, the shifting rod 61 is downwards extruded by the guide wheel pressing sleeve 12, the upper end of the shifting rod 61 is obliquely and upwards arranged, the guide wheel pressing sleeve 12 is guided, in the upward movement process of the telescopic pipe 2, the shifting rod 61 is gradually forced to move leftwards by the guide wheel pressing sleeve 12, the spring 53 is stressed and compressed, the tail end of the bolt 6 is separated from the through hole of the U-shaped bottom end face of the U-shaped plate 4, and the limit of the U-shaped plate 4 and the bolt fixing and supporting seat 5 in the circumferential direction is relieved. Meanwhile, the pressing claw 121 of the guide wheel pressing sleeve 12 presses the pressing wheel 44 downwards, so that the U-shaped plate 4 rotates around the rotating shaft 41 to retract the guide wheel 43; in the whole process, the left moving distance of the plug pin 6 is smaller than the limiting length of the shift lever 61 in the slot, so that the plug pin is prevented from overturning. After the guide wheel 43 is retracted, the U-shaped grooves of the guide wheel pressing sleeve 12 are clamped at the two ends of the bolt fixing support seat 5, and the pressing claw 121 is pressed above the pressing wheel 44 to prevent the guide wheel 43 from turning. When the guide wheel 43 needs to be put down, the driving motor 11 is started again, the telescopic pipe 2 is extended, the guide wheel pressing sleeve 12 is retracted, due to gravity, the guide wheel 43 automatically falls in an overturning mode, when the through hole in the end face of the bolt fixing and supporting seat 5 is overlapped with the through hole in the bottom end face of the U-shaped plate 4, the guide wheel pressing sleeve 12 moves to the inclined section of the shift lever 61, the bolt 6 gradually moves to the right under the elastic resilience effect of the spring 53, sequentially penetrates through the bolt fixing and supporting seat 5 and the U-shaped plate 4, and the supporting and the guide effect of the guide wheel 43 is achieved.
Further, the inside wall of U-shaped plate 4 still is equipped with L shape limiting plate 45, and the spacing groove has been seted up to L shape limiting plate 45, and the through-hole that the U-shaped bottom face of limiting groove and U-shaped plate 4 was seted up is linked together, and the through-hole that the end of bolt 6 passed the spacing groove and was seted up from U-shaped plate 4 bottom face stretches out, and the L shape hem of L shape limiting plate 45 and the lower terminal surface butt of bolt fixed bolster 5. When leading wheel 43 overturns downwards because of the dead weight effect, the setting of L shape limiting plate 45 can prevent that U-shaped plate 4 from overturning excessively, plays the positioning action to bolt fixed bolster 5 and U-shaped plate 4, guarantees that bolt 6 can run through bolt fixed bolster 5 and U-shaped plate 4 smoothly.
The outer side wall of the connecting support tube 1 is also provided with a guide wheel mounting sheet 7. The guide wheel mounting piece 7 is used to mount and fix the guide wheel 43 to the motor home.
The working process of the invention is as follows:
when the guide wheel 43 needs to be retracted, the driving motor 11 is started, the driving motor 11 drives the screw rod 3 to rotate, the screw rod 3 drives the telescopic pipe 2 to move upwards, the guide wheel pressing sleeve 12 downwards extrudes the shift lever 61, in the process that the telescopic pipe 2 moves upwards, the guide wheel pressing sleeve 12 forces the shift lever 61 to gradually move leftwards, the spring 53 is stressed and compressed, the tail end of the bolt 6 is separated from the through hole of the U-shaped bottom end face of the U-shaped plate 4, and the limit of the U-shaped plate 4 and the bolt fixing support seat 5 in the circumferential direction is relieved. At the same time, the pressing claws 121 of the guide wheel pressing sleeve 12 press the pressing wheel 44 downward, so that the U-shaped plate 4 rotates about the rotating shaft 41 to retract the guide wheel 43. After the guide wheel 43 is retracted, the U-shaped grooves of the guide wheel pressing sleeve 12 are clamped at the two ends of the bolt fixing support seat 5, and the pressing claw 121 is pressed above the pressing wheel 44 to prevent the guide wheel 43 from turning.
When the guide wheel 43 needs to be put down, the driving motor 11 is started again, the telescopic pipe 2 is extended, the guide wheel pressing sleeve 12 is retracted, due to gravity, the guide wheel 43 automatically falls in an overturning mode, when the through hole in the end face of the bolt fixing and supporting seat 5 is overlapped with the through hole in the bottom end face of the U-shaped plate 4, the guide wheel pressing sleeve 12 moves to the inclined section of the shift lever 61, the bolt 6 gradually moves to the right under the elastic resilience effect of the spring 53, sequentially penetrates through the bolt fixing and supporting seat 5 and the U-shaped plate 4, and the supporting and the guide effect of the guide wheel 43 is achieved.
According to the invention, the guide wheel pressing sleeve 12 is matched with the bolt 6 to complete the left-right movement of the bolt 6, so that the guide wheel 43 is locked or rotated in the circumferential direction, and the guide wheel 43 is freely retracted.
In the description of the present invention, it is to be understood that the terms "left", "right", "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "back", "middle", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
However, the above description is only exemplary of the present invention, and the scope of the present invention should not be limited thereby, and the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.
Claims (6)
1. A guide wheel for a trailer is characterized by comprising a connecting support tube, wherein a telescopic tube is coaxially sleeved inside the connecting support tube, a lead screw is connected inside the telescopic tube in a threaded manner, a driving motor is fixedly arranged at the upper part of the connecting support tube, and the output end of the driving motor is connected with the lead screw; the bottom end of the telescopic pipe is provided with a guide wheel folding and unfolding structure, the guide wheel folding and unfolding structure comprises a U-shaped plate, a bolt fixing and supporting seat and a bolt, the bolt fixing and supporting seat is arranged in a U-shaped opening of the U-shaped plate, the upper end surface of the bolt fixing and supporting seat is fixedly connected with the bottom end of the telescopic pipe, and the two side surfaces of the bolt fixing and supporting seat are rotatably connected with the two ends of the U-shaped opening of the U-shaped plate through rotating shafts; a partition plate is arranged in the bolt fixing and supporting seat, an inner cavity of the bolt fixing and supporting seat is divided into a bolt moving area and a spring compression area by the partition plate, and the bolt sequentially penetrates through the bolt moving area, the spring compression area and the U-shaped plate and extends out of a through hole formed in the bottom end face of the U-shaped plate; a driving lever extends upwards from one end of a bolt positioned at the opening end of the U-shaped plate, the driving lever is clamped in a slot formed in the upper end face of the bolt fixing support seat, an annular baffle is further arranged on the outer side wall of the bolt arranged in a spring compression area, and a spring is sleeved on the outer side wall of the bolt between the partition plate and the annular baffle; the U-shaped plate is characterized in that pinch rollers are rotatably connected and arranged on the inner sides of two ends of a U-shaped opening of the U-shaped plate, a guide wheel pressing sleeve is connected and arranged at the bottom end of the connecting and supporting tube, U-shaped grooves are formed in two ends of the guide wheel pressing sleeve, pressing claws are formed between the two U-shaped grooves, and the pressing claws are arranged right above the pinch rollers.
2. The guide wheel for the trailer as claimed in claim 1, wherein the upper end of the deflector rod is inclined in a direction away from the telescopic rod.
3. The guide wheel for a trailer as claimed in claim 1, wherein the inner sidewall of the U-shaped plate is further provided with an L-shaped limiting plate, the L-shaped limiting plate is provided with a limiting groove, the limiting groove is communicated with a through hole formed on the U-shaped bottom end surface of the U-shaped plate, and the L-shaped folded edge of the L-shaped limiting plate abuts against the lower end surface of the bolt fixing and supporting seat.
4. The guide wheel for a trailer as claimed in claim 1, wherein the pin further defines a fixing hole, the fixing hole is disposed on the outer side of the ring-shaped baffle, and a fixed shaft is disposed in the fixing hole.
5. The guide wheel for the trailer as claimed in claim 1, wherein the lower end of the U-shaped plate is further connected with a guide wheel support plate, and the end of the guide wheel support plate is rotatably connected with a guide wheel.
6. The guide wheel for the trailer as claimed in claim 1, wherein the outer side wall of the connection support tube is further provided with a guide wheel mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210052399.2A CN114475533B (en) | 2022-01-18 | 2022-01-18 | Guide wheel for trailer caravan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210052399.2A CN114475533B (en) | 2022-01-18 | 2022-01-18 | Guide wheel for trailer caravan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114475533A true CN114475533A (en) | 2022-05-13 |
| CN114475533B CN114475533B (en) | 2024-06-21 |
Family
ID=81511634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210052399.2A Active CN114475533B (en) | 2022-01-18 | 2022-01-18 | Guide wheel for trailer caravan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114475533B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201980019U (en) * | 2010-12-27 | 2011-09-21 | 三一重工股份有限公司 | Automatically folding directive wheel and folding mechanism thereof |
| CN106335478A (en) * | 2016-09-25 | 2017-01-18 | 威海高登旅游休闲用品有限公司 | Travel trailer guide wheel device |
| CN112319435A (en) * | 2020-11-04 | 2021-02-05 | 威海博瀚机械科技有限公司 | Full-automatic caravan supporting leg and using method thereof |
| WO2021022855A1 (en) * | 2019-08-08 | 2021-02-11 | 杭州易博特科技有限公司 | Retractable caster wheel mechanism, and transport vehicle |
| CN112744316A (en) * | 2021-02-09 | 2021-05-04 | 威海高登旅游休闲用品有限公司 | Leading wheel device and pull-type car as a house |
| CA3107166A1 (en) * | 2020-01-23 | 2021-07-23 | Basta Ip Inc. | Detachable wheel assembly |
| WO2021189773A1 (en) * | 2020-03-24 | 2021-09-30 | 广东顺和工业有限公司 | Platform truck with foldable caster unit |
-
2022
- 2022-01-18 CN CN202210052399.2A patent/CN114475533B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201980019U (en) * | 2010-12-27 | 2011-09-21 | 三一重工股份有限公司 | Automatically folding directive wheel and folding mechanism thereof |
| CN106335478A (en) * | 2016-09-25 | 2017-01-18 | 威海高登旅游休闲用品有限公司 | Travel trailer guide wheel device |
| WO2021022855A1 (en) * | 2019-08-08 | 2021-02-11 | 杭州易博特科技有限公司 | Retractable caster wheel mechanism, and transport vehicle |
| CA3107166A1 (en) * | 2020-01-23 | 2021-07-23 | Basta Ip Inc. | Detachable wheel assembly |
| WO2021189773A1 (en) * | 2020-03-24 | 2021-09-30 | 广东顺和工业有限公司 | Platform truck with foldable caster unit |
| CN112319435A (en) * | 2020-11-04 | 2021-02-05 | 威海博瀚机械科技有限公司 | Full-automatic caravan supporting leg and using method thereof |
| CN112744316A (en) * | 2021-02-09 | 2021-05-04 | 威海高登旅游休闲用品有限公司 | Leading wheel device and pull-type car as a house |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114475533B (en) | 2024-06-21 |
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Effective date of registration: 20240508 Address after: Room 1004, 10th Floor, No. 20, Jiangsu East Road, Caomiaozi Town, Lingang Economic and Technological Development Zone, Weihai City, Shandong Province, 264200 Applicant after: Weihai Black Series Changyou Intelligent Technology Co.,Ltd. Country or region after: China Address before: 264200 No. 20, Taishun Road, caomiaozi Town, Lingang Economic and Technological Development Zone, Weihai City, Shandong Province Applicant before: Heisi intelligent equipment (Weihai) Co.,Ltd. Country or region before: China |
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