KR20230114061A - Trailer having ramp - Google Patents

Abstract

The present invention relates to a trailer with a ramp, and the trailer with a ramp according to the present invention includes a mounting deck fixed to a chassis, an extension ramp at an upper end pivotally hinged to the outside, and a lower end pivotally hinged to a rear frame Main It includes a lamp and a pair of dampers that retractably connect the main lamp to the rear frame, and the formation and release of the lamp can be performed easily and safely with one hand without effort, so that bicycles, motorcycles, or four-wheel drive bikes (all -terrain vehicle) or various leisure sports driving means such as three- or four-wheeled mini electric vehicles are simple and easy to load and unload, and the structure does not include complex mechanical or electromagnetic driving means It is simple and has high durability, maintainability, and manufacturing economy, as well as high operational reliability and safety during driving.

Description

Trailer with ramp {TRAILER HAVING RAMP}

The present invention relates to a trailer equipped with a ramp, and more particularly, to a damper for loading various leisure sports driving means such as a bicycle, motorcycle, all-terrain vehicle, or three-wheeled or four-wheeled mini electric vehicle. This is a trailer equipped with a lamp that can simply and easily load and unload driving means for leisure sports by pivoting the rear wall on which it is installed outward and using it as an inclined ramp. It can be operated simply and easily with one hand without effort, so it has high usability and safety. It does not include complex mechanical driving means or electromagnetic driving means, so the structure is simple, so it has high durability and maintainability. Significant cost savings are possible.

In general, a trailer refers to a vehicle towed by a powered vehicle without its own power, and according to the Automobile Management Act, a small trailer for leisure with a gross weight of 0.75t or less is prescribed to be driven with a first-class normal or second-class normal license.

These small trailers for leisure can be classified into camping trailers, cargo trailers, multi-purpose trailers, etc. depending on their use, and depending on their structure and shape, a motor home decorated like a house, a truck loading box if necessary. A truck camper that can be towed with the front part resting on it, a towed travel trailer (caravan), a folder tent type or folder sliding expandable prefabricated folding trailer that can be folded and unfolded in a pop-up and folding form to minimize the volume. It is also classified as

Recently, interest in travel trailers is rapidly increasing due to many people who want to enjoy romance and sensibility while avoiding contact with the public in accordance with the pandemic of Covid-19, and among them bicycles Trailers that can load various leisure sports driving means such as motorcycles, 4-wheel drive bikes, or 3-wheeled or 4-wheeled mini electric vehicles are towed by their own vehicle and moved to a remote place, and then these leisure sports driving means are available at a desired location. There are more and more cases of getting off and enjoying leisure sports.

Conventionally, in order to load or unload the above-mentioned driving means for leisure sports on a trailer, a footrest prepared separately is fixed while the rear plate of the trailer is tilted back or removed, and then the driving means for leisure sports is moved to load or unload from the loading board. However, since the storage and transportation of the scaffolding is necessary, there are problems in that the scaffolding is lost, noise is generated due to vibration of the scaffolding during driving, and the loading space is reduced due to the scaffolding.

In order to solve the conventional problems as described above, Korean Patent Registration No. 1801470 (registered on November 20, 2017) by the present inventor, as shown in FIG. The bottom plate 7 is installed on the upper part, the safety bar 9 is installed on the frame 2, and the leisure driving means fixing part (reference numeral not given) is installed at the rear of the bottom plate 7. In addition, a pull-out type ramp mounted trailer 10 composed of a mounting part is proposed so that the ramp 2a forming the ramp can be pulled in and out at the lower part of the frame 2. In the drawing, reference numeral 2b denotes a retractor, 4 denotes a coupler, and 4b denotes a safety chain.

However, the trailer 10 with the above-mentioned pull-out type ramp has to manufacture the ramp 2a separately from the bottom plate 7, and a separate frame 2 for mounting the ramp 2a built-in is required. Since it must be installed, there is a problem that the structure is complicated and causes cost-up during manufacturing.

On the other hand, Korean Patent Publication No. 10-2017-0117716 (published on October 24, 2017) proposes a folding trailer composed of a front bottom plate and a rear bottom plate that is hinged thereto and can be folded by rotating 180 °. A drive shaft driven by a reverse motor or a reverse hydraulic system for inclining the front bottom plate and the rear bottom plate to the ground at 15 to 30 °, and a worm and worm gear configuration are disclosed.

However, since these trailers use electromagnetic or hydrodynamic driving means, their structure is complex, which may cause problems in durability and maintainability, and there is a problem that cost-up cannot be avoided during manufacture.

In addition, Patent Registration No. 10-2086849 (registered on March 30, 2020) by the present applicant, as shown in Figure 15, the main deck (10) having a front frame and a set of side frames (13) extending rearward ) And, the front frame is pivotably fixed between the pair of side frames 23 extending to the rear of the main deck 10, and the flap having a pair of side frames 13 having inclined ends 23a formed thereon. It consists of a deck 20, and a loading deck on which wheels are installed; A traction frame connected to the above-described mounting deck and equipped with a coupler and a landing jack: installed at an extended end of any one of the pair of side frames 13 of the main deck 10 and driven by a driving lever It consists of a drive unit 30 having a driven gear having a driven shaft on which gears and wires are wound: a fixing unit with a pulley 27 installed on the bottom surface of each central portion of a set of side frames 13 of the above-described flap deck 20 (26) are formed to protrude outward, respectively, and a fixing hole is formed at the rear adjacent to the fixing part 26, and an elastically flap deck is provided at the extended end of the pair of side frames 23 of the main deck 10. A fixing metal 41 inserted into the fixing hole of (20) is installed, and a nail portion is formed to prevent fitting of the fixing metal 41, and the wire wound around the driven shaft is one set of the flap deck 20. It is fixed to the other one of the pair of side frames 13 of the main deck 10 via the pulley 27 installed on the lower surface of each central part of the side frame 13; At the time of forming the ramp, the above fixing member 41 is pulled out and spanned over the nail portion, and then the drive lever is rotated forward to tilt the flap deck 20 downward, and when returning to the original position for forming a horizontal deck, the above drive lever After tilting the flap deck 20 upward by reverse rotation, a trailer capable of forming a ramp is proposed, in which the fixing member 41 is detached from the nail portion and inserted into the fixing hole of the flap deck 20 to be fixed.

However, the above prior art by the present inventors has the advantage of not including an automated electromechanical means, but requires considerable labor and effort for downward tilting and leveling of the flap deck 20, and has a problem in that it takes a lot of time In addition, there is a problem that the configuration is complicated and causes an increase in cost.

Registered Patent Publication No. 1801470 (registered on November 20, 2017) Publication No. 10-2017-0117716 (published on October 24, 2017) Registered Patent Publication No. 10-2086849 (registered on March 30, 2020)

A first object of the present invention is to provide a trailer equipped with a ramp that can simply and easily load and unload various leisure sports driving means such as bicycles, motorcycles, all-terrain vehicles, or three-wheeled or four-wheeled mini electric vehicles. It is for

A second object of the present invention is to provide a trailer equipped with a lamp that has high usability because it can be easily and safely performed with one hand without difficulty in forming and releasing the lamp.

A third object of the present invention is to provide a trailer equipped with a ramp, which has a simple structure, high durability, maintainability, and manufacturing economy because it does not include a complicated mechanical driving means or electromagnetic driving means.

A fourth object of the present invention is to provide a trailer equipped with a lamp having high operational reliability and safety during driving.

According to a preferred aspect of the present invention for smoothly achieving the above objects of the present invention, a connector and a landing jack are installed at the front, posts are formed at four corners, and a set of mutually spaced protrusions extend outwardly. a chassis including a frame; a mounting deck fixed to the chassis; A main lamp in which an extension ramp is pivotally hinged to the outside at an upper end, a pivoting hinge is coupled to the rear frame at a lower end, and inward protrusions having fixing holes are formed on both sides of the central part; A pair of mutually spaced protrusions and a pair of dampers that retractably connect the main lamp: At the top of the post located at the rear two corners of the post, there is an elastic fixing hole for the main lamp It can be smoothly achieved by a trailer equipped with a lamp in which a fixing metal is installed and a nail portion is formed to prevent the fixing metal from being inserted into the fixing metal.

The main ramp includes upper and lower frames, both sides of the frame, and a plurality of intermediate horizontal frames connecting the both sides of the frame, and the extended end of the extension ramp is formed of an inclined plate.

Above, the piston of the damper is coupled to the L-shaped part fixed to the main ramp, and a cutout is formed in a part of the intermediate horizontal frame to prevent interference with the piston of the damper.

The main lamp and the extension lamp may be lightened by being formed of a perforated iron plate.

Handles are formed on both sides of the extension lamp in the lateral direction, and a buffer member for preventing noise caused by contact with the main lamp may be attached to two rear posts among the posts of the chassis.

On the other hand, a pair of fixing parts having a fixing hole extending outwardly and protruding downward is formed in the rear frame of the chassis, and a fitting having a through hole extending inwardly and protruding downward is formed in the lower frame of the main lamp. A portion is formed, and a pivot hinge connection of the main lamp to the rear frame of the chassis is performed by the connecting shaft passing through the fixing hole and the through hole, and the inner extension end of the fitting portion is a stopper for the rear frame will function

On the other hand, a pair of fixing parts having a fixing hole extending outwardly and protruding upward is formed in the upper frame of the main lamp, and a through hole extending inwardly and protruding upward is formed in the upper end of the extension lamp. The formed fitting portion is formed, and the pivot hinge coupling of the extension lamp to the main lamp is performed by the connecting shaft passing through the fixing hole and the through hole.

A trailer equipped with a ramp according to the present invention can easily and safely carry out the formation and release of a ramp with one hand without effort, and thus driving means for various leisure sports such as bicycles, motorcycles, 4-wheel drive bikes, 3-wheeled or 4-wheeled mini electric vehicles. It has high usability that can be simply and easily loaded and unloaded, and the structure is simple because it does not include complicated mechanical driving means or electromagnetic driving means, so it has high durability, maintainability, and manufacturing economy, as well as high operation Reliability and safety while driving.

1 is a rear perspective view of a trailer with a ramp according to the present invention.
2 is a perspective view illustrating a connection between a protrusion formed on a rear frame and a damper.
3 is a perspective view illustrating a connection between an L-shaped portion fixed to a main lamp and a damper piston.
4 is a view showing a pivot hinge coupling structure of a main lamp and an extension lamp.
5 is a view showing a pivot hinge coupling structure between a rear frame and a lower frame of a main ramp.
6 is a view showing a fixing state of the main lamp by a fixture installed on the top of the rear post.
FIG. 7 is a view showing an unfixed state in FIG. 6 .
8 to 13 are operational state explanatory diagrams showing lamp installability and lamp release process by pivoting of the main lamp and the extension lamp in the trailer equipped with lamps according to the present invention.
14 and 15 are perspective views showing a conventional trailer according to the present inventors.

In general, a damper refers to a device that generates a damping force to dampen vibration or lower the level of vibration near resonance. There are small dampers attached to the rear hatch, and dynamic dampers, starting with torsional dampers that reduce crankshaft vibration, are also commonly referred to as dampers, while dampers are shock absorbers It is also often used as an alias.

However, the term 'damper' used throughout this specification is defined as meaning a small pneumatic or gas damper that does not require power, specifically, on the bonnet, trunk lid, or rear hatch. It means a small damper to be attached.

The term 'ramp' used throughout this specification refers to the loading and unloading of various leisure sports-type driving means such as bicycles, motorcycles, four-wheel drive bikes, mini electric vehicles, jet skis and boats, as well as various loads (cargoes). ) is defined as an inclined passage that is convenient for loading and unloading and people's passage even when loading or unloading by manpower.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

1 is a rear perspective view of a trailer 1 with a lamp according to the present invention, and FIG. 2 is a perspective view showing a connection between a protrusion 13 formed on a rear frame 12 and a cylinder 51 of a damper 50, 3 is a perspective view showing the connection between the L-shaped portion 36 fixed to the main lamp 30 and the piston 52 of the damper 50, and FIG. 4 is a pivot hinge of the main lamp 30 and the extension lamp 40 5 is a view showing a pivot hinge coupling structure between the rear frame 12 of the chassis 10 and the lower frame 32 of the main lamp 30, which will be referred to together for convenience of description. do.

A trailer 1 with a lamp according to the present invention includes a chassis 10, a mounting deck 20 fixed to the chassis 10, and a main ramp used as a rear wall and a lamp behind the chassis 10 (30), an extension lamp (40), and a damper (50) for moving the main lamp (30).

And, although not shown, a towing hitch and a landing jack or landing gear are installed at the front of the chassis 10, and tires are mounted on both sides of the middle of the chassis 10 .

In other words, the front part of the chassis 10 is formed in a triangular shape as a whole, and a connector for connection with a tow ball (not shown) of a tow vehicle is mounted at the end thereof, and the connector fixes the connection with the vehicle. A knob for loosening and a safety chain for safety in case of a loosening accident are installed, and a landing jack is installed on the front part of the chassis 10 to raise the wheel during towing and to lower it during mounting. It is clamped or released from the chassis 10 by operation, and is gradually raised or lowered by forward and reverse rotation of the handle, but all of these are known.

Posts 11 are formed at the four corners of the chassis 10, and fixtures 16 to be described later in FIGS. In the rear frame 12 of the chassis 10, a set of mutually spaced protrusions 13 extends outward toward the rear.

The rear frame 12 of the chassis 10 and the lower end of the main ramp 30 are pivotally hinged, and the extension ramp 40 is pivotally hinged to the upper end of the main ramp 30 to the outside.

In addition, a fixing part 37 having a fixing hole 37a is formed on both sides of the central part of the main lamp 30 to the inside.

A pair of dampers 50 connects a set of spaced apart protrusions 13 and the main lamp 30 in a degenerate manner.

The main ramp 30 includes upper and lower frames 31 and 32, both sides of the frame 33, and a plurality of intermediate horizontal frames 34 connecting the both sides of the frame 33, and if necessary, the support strength is increased. For this purpose, a plurality of intermediate vertical frames (reference numerals not given) may be installed.

On the other hand, a plurality of intermediate vertical frames (reference numerals are not given) may be installed in the extension lamp 40 to increase the support strength, and the extension end of the extension lamp 40 may load and support various leisure sports type driving means. It is formed with an inclined plate 41 for smooth and smooth unloading.

The surfaces of the main lamp 30 and the extension lamp 40 are made of a perforated iron plate 44 to reduce weight.

The end of the piston 52 of the damper 50 is coupled to the L-shaped portion 36 fixed to the main lamp 30, and the end of the cylinder 51 of the damper 50 is the chassis ( 10) is coupled to a set of mutually spaced protrusions 13 formed on the rear frame 12.

Here, the lower frame 32 of the main lamp 30 is formed with a cutout 32c for preventing interference with the cylinder 51 of the damper 50 during lamp formation, and the above-described intermediate horizontal frame ( 34) is also formed with a cutout 34a for preventing interference with the piston 52 of the damper 50 described above.

On the other hand, handles 42 are formed on both sides of the extension lamp 40 in the lateral direction.

In addition, buffer members 14 such as rubber are attached to the two posts 11 located at the rear of the posts 11 of the chassis 10 to prevent noise caused by contact when the main lamp 30 is upright. .

Subsequently, the pivot hinge coupling structure of the extension lamp 40 to the main lamp 30 will be described in detail with reference to FIG. 4, the upper frame 31 of the main lamp 30 extends outward and upward A pair of fixing parts 31a are formed with a fixing hole (not shown) protruding therein, and a through hole (not shown) extending inwardly and protruding upward is formed at the upper end of the extension lamp 40. A fitting portion 43 is formed, and the pivot hinge coupling of the extension lamp 40 to the main lamp 30 is performed by the connecting shaft 31b penetrating the fixing hole and the through hole.

When the lamp is formed by the pair of fixing parts 31a and the fitting part 43 protruding upward (see FIG. 10), the main lamp 30 and the extension lamp 40 are spread without interference and smooth. be able to connect.

The pivot hinge coupling structure of the main lamp 30 to the chassis 10 is also substantially the same as the pivot hinge coupling structure of the extension lamp 40 to the main lamp 30, but with reference to FIG. As described above, a pair of fixing parts 12a having fixing holes (not shown) extending outwardly and protruding downward are formed in the rear frame 12 of the chassis 10, and the main lamp described above is formed. The lower frame 32 of (30) is formed with a fitting portion 32a having a through hole (not shown) extending inwardly and protruding downward, and by the connecting shaft 15 passing through the fixing hole and the through hole. The pivot hinge coupling of the main lamp 30 to the rear frame 12 of the chassis 10 is performed, and the inner extension end 32b of the fitting portion 32a of the main lamp 30 is When the main lamp 30 is upright, it functions as a stopper that is caught and fixed on the upper surface of the rear frame 12 described above.

Subsequently, FIG. 6 is a view showing the fixing state of the main lamp 30 by the fixture 16 installed on the top of the rear post 11, and FIG. 7 is a view showing the unfixed state in FIG. 6, and the above fixture (16) is installed on top of the post (11) located at the rear two corners of the post (11).

The fixture 16 is elastically fitted into the fixing hole 37a of the inward protrusion 37 of the main lamp 30 so that the fixing member 16c can move forward and backward elastically by the spring 16c. In addition to being installed, a stopper 16e formed of two mutually spaced pillars is formed to prevent fitting again by elastic force when the fixing member 16c for forming the lamp is released, and the nail portion 16d is formed so that it can be caught, and the outer extension end of the fixing member 16c is formed with a knob 16b bent at a right angle for easy manipulation.

On the other hand, in the trailer 1 with a lamp according to the present invention, walls (reference numerals are not given) are formed on the front and both sides, and guard rails (reference numerals are not given) are formed on the wall, and the guard rails on both sides are It can be installed to be height-adjustable, but the present invention is not limited thereto, and this structure is optional.

Finally, FIGS. 8 to 13 are diagrams sequentially showing the process of easily forming the lamp of the trailer 1 with the lamp according to the present invention with one hand and releasing it again, which is sufficient from the above description. Since it can be easily understood, a detailed description thereof will be omitted.

1: Trailer with ramp according to the present invention
10: Chassis
11: post 12: rear frame
12a: fixing part 13: protruding part
14: buffer member 15: connecting shaft
16: fixture 16a: fixture
16b: knob 16c: spring
16d: nail portion 16e: stopper
20: loading deck
30: main ramp
31: upper frame 31a: fixing part
31b: connecting shaft 32: lower frame
32a: fitting portion 32b: inner extension end
33: both sides frame 34: middle horizontal frame
34a: cutout 35: perforated iron plate
36: L-shaped portion 37 inward protrusion
37a: fixed hole
40: extension lamp
41: inclined plate 42: handle
43: fitting part 44: perforated iron plate
50: damper
51: cylinder 52: piston

Claims (7)

A chassis including a rear frame in which connectors and landing jacks are installed at the front, posts are formed at four corners, and a set of mutually spaced protrusions extend outward;
a mounting deck fixed to the chassis;
A main lamp in which an extension ramp is pivotally hinged to the outside at an upper end, a pivoting hinge is coupled to the rear frame at a lower end, and inward protrusions having fixing holes are formed on both sides of the central part;
A pair of dampers that retractably connect a set of mutually spaced protrusions and the main lamp, including:
At the upper end of the post located at the rear two corners of the above post, a fixing metal that is elastically inserted into the fixing hole of the main lamp is installed, and a nail portion is formed to prevent the fixing metal from being inserted
Trailer with lamps. The lamp according to claim 1, wherein the main ramp includes upper and lower frames, both side frames, and a plurality of intermediate horizontal frames connecting the both sides of the frame, and the extension end of the extension lamp is formed of an inclined plate. trailer. The method of claim 2, wherein the piston of the damper is coupled to the 'L' shape fixed to the main ramp, and some of the intermediate horizontal frames have cutouts for preventing interference with the piston of the damper A trailer equipped with a ramp in which is formed. The trailer with lamps according to claim 1, wherein the main lamps and the extension lamps are formed of perforated iron plates. The method of claim 1, wherein handles are formed on both sides of the extension lamp in a lateral direction, and buffer members for preventing noise caused by contact with the main lamp are formed on two rear posts of the chassis posts. Trailer equipped with ramps. The method of claim 2, wherein a pair of fixing parts having fixing holes extending outwardly and protruding downward are formed on the rear frame of the chassis, and the lower frame of the main lamp is formed with a pair of fixing holes extending inwardly and protruding downward A fitting portion having a through hole is formed, and a pivot hinge connection of the main lamp to the rear frame of the chassis is performed by the fixing hole and a connecting shaft passing through the through hole, and the inner extension end of the fitting portion is the rear frame A trailer equipped with a ramp to function as a stopper for the The method of claim 2, wherein a pair of fixing parts having a fixing hole extending outwardly and protruding upward is formed on the upper frame of the main lamp, and the upper end of the extension lamp is extended inwardly and protrudes upward. A trailer equipped with a lamp in which a fitting portion having a through hole is formed, and a pivot hinge coupling of an extension lamp to the main lamp is performed by a connecting shaft passing through the fixing hole and the through hole.