Universal trailer having support bracket for controlling boat position

Abstract

The present invention relates to a universal trailer having a support bracket which naturally guides the V-shaped bottom surface and keel of a boat toward the center of the trailer as the boat moves forward when the boat, which is located on seawater or fresh water and is maintained horizontally according to the water level and buoyancy, is being loaded onto a trailer that is tilted along a slope of a slipway and partially submerged. The universal trailer according to the present invention comprises: two main frames diverging from a front towing portion in accordance with the shape of the boat; a plurality of crossbars that connect the main frames and are spaced apart from each other; and wheels that are provided on each of the main frames, wherein some or all of the crossbars are equipped with V-shaped support brackets that conform to the shape of the bottom of the boat.

Description

Universal trailer with support bracket for boat position control

[0001] The present invention relates to a universal trailer for moving a boat and for launching and loading at a slalom.

[0002] More specifically, when loading a boat that is located in seawater or freshwater and is level according to the water level and buoyancy onto a trailer that is partially submerged by tilting along the slope of a slalom, the V-shaped bottom of the boat along with the keel is naturally guided to the center of the trailer as the boat moves forward, thereby ensuring smooth boat position control.

[0003] Also, due to this support bracket, when launching or unloading the boat, the trailer itself is moved backwards from the slalom to enter the sea or fresh water to the extent that the boat can float, and the boat maintains horizontality along the water surface due to buoyancy and proceeds from the rear of the trailer, and the final unlocking is performed while controlling from the slalom in front of the boat, so that the boat can be launched without the worker having to get his body into the water.

[0004] Furthermore, it relates to a universal trailer equipped with a support bracket that can safely protect the sensitive keel, especially the front keel, when loading and moving the boat.

[0005] A variety of boat trailers have been proposed.

[0006] For example, there is patent registration number 10-2464413 (November 2, 2022) [Boat trailer].

[0007] This is to allow the boat loaded on the trailer to be easily launched onto the water along the slipway by sinking or floating the rear of the boat trailer.

[0008] By sinking the rear of the trailer, it is not only possible to easily float a boat loaded on top on the water, but also provides the effect of floating the rear of the trailer so that an operator can easily escape even if the rear of the trailer sinks excessively underwater due to the worker encroaching on the end of the slipway while loading a boat on the water onto the trailer, and it prevents the vehicle from being dragged down and submerged due to the trailer sinking excessively underwater during the process of floating a loaded boat on the water, thereby preventing safety accidents in advance.

[0009] There is also patent registration number 10-2362970 (February 10, 2022) [Trailer for leisure boat].

[0010] This registered patent discloses a trailer for a leisure boat to be towed by a vehicle, comprising: a frame portion having a front end connected to the vehicle; a knuckle member connected by a hinge along an axis of rotation in the vertical direction on both sides of the frame portion and having a wheel hub mounted thereon; a double-rod type actuator provided on the frame portion, the front end of each rod facing each of the knuckle members; and links connected to the ends of the knuckle members and the rods by ball joints, respectively.

[0011] The trailer's trajectory can be aligned with the vehicle's trajectory, improving driving convenience and enabling more precise trailer parking. Furthermore, flooding damage can be prevented even if the rear of the trailer becomes submerged during the boat launch phase.

[0012] Furthermore, there is patent registration number 10-2422940 (July 15, 2022) [Hanger for boat transport].

[0013] This registered patent provides a boat transport hanger that is easy to manage as it can detect the bottom and automatically support or lower the boat, preventing the loss of durability due to corrosion as the part supporting the bottom of the boat does not have to wait in a submerged state, and

[0014] Also, it is composed of a hanger body and a hanger arm that is foldable at a certain interval on both sides of the lower end of the hanger body to support the lower part of the boat, and an elevating cylinder that is provided on the hanger body to control the rotation of the hanger arm, so that the lower part of the hanger does not have to wait while submerged in water, thereby preventing corrosion of components that are submerged in water, and it can quickly and stably support the boat, so that the boat can be quickly transported to a storage facility that is installed so as to be in contact with a river, lake, or sea to store the boat, and the hanger body is provided with a bottom detection unit to check whether the lower part of the hanger is in contact with the bottom, so that the bottom detection unit can check whether the lower part of the hanger is in contact with the bottom both on land and in water, and can automatically control the hanger arm at an accurate position, so that it has the effect of automatically performing the process of supporting and lifting a boat or lowering a supported boat to the bottom.

[0015] In addition, there is Patent Publication No. 10-2022-0096543 (July 7, 2022) [Water rescue boat trailer for mounting air safety mat loading / unloading module].

[0016] This public patent is for a water rescue boat trailer equipped with an air safety mat loading / unloading module to help rescue 119 rescue workers, including a module support with a grooved rail, a boat protector for module support, and an axle fixing member, to enable the mounting / dismounting of an 'air safety mat loading / unloading module' on an existing trailer that can only load water rescue boats.

[0017] The module support boat protector that can support the 'air safety mat loading / unloading module' and protect the side of the water rescue boat and the module support that can additionally support the weight of the 'air safety mat loading / unloading module' have the effect of enabling the loading of the water rescue boat and the 'air safety mat loading / unloading module' to be alternated, and indirectly, the cost-effectiveness of life-saving equipment is reduced, and in addition, a rough rail groove is installed so that part of the wheel of the 'air safety mat loading / unloading module' is inserted, which has the effect of preventing obstacles such as wheel detachment when the process of loading / unloading the air safety mat is performed using the 'air safety mat loading / unloading module'.

[0018] However, these documents and other prior art technologies are unrelated to providing a technology for loading a boat located in seawater or freshwater and maintained horizontally according to the water level and buoyancy onto a trailer that is tilted along the slope of a slalom and partially submerged in water, or for universally loading boat bottoms and keels of various shapes and sizes and transporting the boat safely and without damage even under vibration and shock caused by various road conditions. Furthermore, they do not suggest a method for launching a boat without the worker having to immerse his or her body in the water at the slalom, and thus there is significant room for improvement.

[0019] Accordingly, the present invention aims to provide a universal trailer that secures smooth boat position control by introducing a support bracket that naturally guides the V-shaped bottom of the boat along the keel toward the center of the trailer as the boat moves forward when loading a boat located in seawater or freshwater and maintaining a horizontal level according to the water level and buoyancy onto a trailer that is partially submerged by tilting along the slope of a slalom.

[0020] In addition, the present invention aims to provide a universal trailer in which a V-shaped upper surface of a support bracket is provided with a pad to protect the bottom of a boat in a cushioned manner and to ensure slipping characteristics.

[0021] In addition, the present invention aims to provide a universal trailer having a non-support portion that protrudes outward beyond the upper surface of the support bracket, thereby further enhancing the central guidance characteristics when loading a boat.

[0022] Furthermore, the present invention aims to provide a universal trailer in which the upper surface of the support bracket is spaced apart from the upper surface of the crossbar so that the trailer is deformed downward by its own elasticity when loading a boat, thereby enabling smooth loading without damage to the boat.

[0023] Meanwhile, the present invention provides a universal trailer that is equipped with a support guard that can be adapted to the shape of the front keel of various boats, so as to maintain a stable boat loading state, and when launching a boat from a slalom, the trailer itself is moved backwards so that the boat can be floated in seawater or freshwater, and then the final unlocking is performed while controlled from the front slalom of the boat, so that the boat can be launched without the worker having to get his or her body into the water.

[0024] In addition, the present invention aims to provide a universal trailer in which the support guard is composed of first and second support guards that support different parts of the front keel, and the first and second support guards can be adjusted in angle or length, or both, to maintain a more stable boat loading and tying state.

[0025] Furthermore, the present invention provides a universal trailer in which a front keel of a boat is provided with a tie ring and a third support guard equipped with a winch reel for tying the tie ring is further provided, thereby ensuring stability and firmness in a loading and tie state, and enabling a worker to control launching from the front of the boat without contacting the water during launching.

[0026] In addition, the present invention provides a universal trailer that has a boat mounting base crossbar that enables loading according to the shape of the bottom and keel of various boats, thereby ensuring the universality of loading and transporting boats safely and without damage, and when launching a boat from a slalom, the trailer itself is moved backwards to enter seawater or freshwater to a level where the boat can be floated, and then the final unlocking is performed at the slalom in front of the boat, thereby enabling the boat to be launched without the worker having to get his or her body into the water.

[0027] In order to achieve the above purpose, a universal trailer equipped with a support bracket for boat position control according to the present invention

[0028] Two main frames split apart from the forward towing section to match the shape of the boat;

[0029] A plurality of crossbars connecting the above mainframes and installed at a distance from each other; and

[0030] Including wheels provided on each of the above main frames;

[0031] It is characterized in that some or all of the above crossbars are provided with V-shaped support brackets corresponding to the shape of the bottom of the boat.

[0032] Also, in a universal trailer equipped with a support bracket for boat position control according to the present invention,

[0033] The V-shaped upper surface of the above support bracket is equipped with a pad,

[0034] The above pad has a non-support portion that protrudes outward beyond the upper surface of the support bracket,

[0035] It is preferable that the upper surface of the above support bracket be spaced apart from the upper surface of the crossbar.

[0036] Meanwhile, the universal trailer according to the present invention

[0037] Two main frames split apart from the forward towing section to match the shape of the boat;

[0038] A plurality of crossbars connecting the above mainframes and installed at a distance from each other; and

[0039] Including wheels provided on each of the above main frames;

[0040] A support guard is provided between the towing part of the main frame and the front crossbar to support the front keel of the boat.

[0041] Also in the universal trailer according to the invention

[0042] The above support guard is composed of first and second support guards that support different parts of the front kill, and the first and second support guards can be adjusted in angle or length, or both.

[0043] The front keel of the boat is equipped with a tie ring, and further includes a third support guard equipped with a winch reel that ties the tie ring.

[0044] It is preferred that some or all of the above crossbars include two sidebars coupled to each mainframe and a V-shaped center bar provided between the sidebars.

[0045] The universal trailer equipped with a support bracket for boat position control according to the present invention, when loading a boat located in seawater or freshwater and maintaining a horizontal level according to the water level and buoyancy onto a trailer that is tilted along the slope of a slalom and partially submerged in water, introduces a support bracket that naturally guides the V-shaped bottom of the boat along with the keel to the center of the trailer as the boat moves forward, thereby ensuring smooth boat position control, and furthermore, the V-shaped upper surface of the support bracket is provided with a pad to protect the bottom of the boat in a cushioned form and to ensure slipping characteristics, and furthermore, the pad has an unsupported portion that protrudes outward beyond the section of the upper surface of the support bracket, thereby further enhancing the centering characteristics during boat loading, and furthermore, the upper surface of the support bracket is separated from the upper surface of the crossbar, so that it is deformed downwards during boat loading due to its own elasticity, thereby enabling smooth loading without damage to the boat, ultimately improving the movement and stability of the boat. It is useful for both launching and loading at a slalom, and when launching or unloading a boat, the trailer itself is moved backwards at the slalom due to the support bracket, so that the boat can be floated in seawater or fresh water, and the boat maintains horizontality along the water surface due to buoyancy and proceeds in a way that separates from the rear of the trailer, so that the final unlocking is performed while controlling from the slalom in front of the boat, so that the boat can be launched without the worker having to get his or her body into the water, and furthermore, it safely protects the sensitive keel, especially the front keel, when loading and moving the boat.

[0046] Meanwhile, the universal trailer according to the present invention is equipped with a support guard that can be supported according to the shape of the front keel of various boats, so that it maintains a stable boat loading state, and when launching a boat at a slalom, the trailer itself is moved backwards to enter seawater or freshwater to the extent that the boat can be floated, and then the final unlocking is performed while being controlled from the slalom in front of the boat, so that the boat can be launched without the worker having to get his / her body into the water. In addition, the support guard is composed of first and second support guards that support different parts of the front keel, and the first and second support guards can be adjusted in angle or length, or both, so that a more stable boat loading and tying state can be maintained. Furthermore, the front keel of the boat is equipped with a tying ring, and a third support guard equipped with a winch reel that ties the tying ring is further equipped, so that the stability and firmness of the loading and tying state are guaranteed, and when launching, the worker can launch from the front of the boat without contacting the water. It is equipped with a boat mounting base crossbar that allows for control and loading according to the shape of the bottom and keel of various boats, thereby ensuring the versatility of loading and transporting boats safely and without damage, and when launching a boat from a slalom, the trailer itself is moved backwards so that the boat can be floated in seawater or fresh water, and the final unlocking is performed at the slalom in front of the boat, so that the boat can be launched without the worker having to get his or her body into the water, ultimately ensuring the versatility and safety of loading and transporting boats, and the ease and safety of launching boats.

[0047] Figure 1 is a drawing and a photo substitute for the drawing of a universal boat trailer according to the present invention.

[0048] Figure 2 is a drawing related to a support bracket of a universal boat trailer according to the present invention.

[0049] *Explanation of symbols for major parts of the drawing*

[0050] T: Trailer B: Boat

[0051] B1: Keel B2: Binding Ring

[0052] 10: Mainframe 11: Towing unit

[0053] 20: Crossbar 21: Sidebar

[0054] 23: Center bar W,w: Wheel

[0055] 30: Supporter 31,33: Support

[0056] 35: Support bar H1, H2: Fastener

[0057] 40: Support bracket 35a,41,P,p: Pad

[0058] 50:51,53,55: Support guard h1,h2: Adjuster

[0059] 57: Winch reel 50P: Pillar

[0060] The present invention will be described in detail with reference to the attached drawings below.

[0061] The present invention is susceptible to various modifications and takes various forms. Therefore, embodiments (or examples) are described in detail herein. However, this is not intended to limit the present invention to a specific disclosed form, and it should be understood that all modifications, equivalents, and alternatives fall within the spirit and technical scope of the present invention.

[0062] In each drawing, the same reference signs, especially the tens and units digits, or the tens, units digits, and alphabets, indicate parts having the same or similar functions, and unless otherwise specified, the parts indicated by each reference sign in the drawing are understood to be parts that comply with these standards.

[0063] In addition, in each drawing, the components are expressed in an exaggerated (or thick) or simplified (or thin) size or thickness for convenience of understanding, but the scope of protection of the present invention should not be interpreted as being limited by this.

[0064] The terminology used in this specification is only used to describe specific implementations (aspects) (or examples) and is not intended to limit the present invention. The singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, it should be understood that terms such as “comprises” or “consists of” indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0065] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0066] The terms "first", "second", etc. described in this specification are only used to distinguish different components, etc., and are not limited to the order of priority or manufacturing, and the names may not be consistent in the detailed description of the invention and the claims.

[0067] In explaining a universal trailer (T) equipped with a support bracket (40) for boat position control according to the present invention, for convenience, a rough, but not strict, direction reference is specified with reference to FIGS. 1 and 2.

[0068] The side of the towing part (11) located at the point where the main frame (10) meets is defined as the front, and the opposite side is defined as the rear. In the situation where the towing part (11) is observed, the up, down, left, and right are defined, and the detailed description and claims of the invention related to other drawings are also described by specifying the direction according to this standard.

[0069] First, the skeletal drawing centered on the main frame (10), crossbar (20), and wheel (W,w) before mounting various accessories of Fig. 1 [A],

[0070] [B] Photo as a substitute for the drawing of the boat (B) loading status, etc.

[0071] [C] Drawing related to the crossbar (20), which is one of the core elements of the present invention,

[0072] [D] Supporter (30) related drawing substitute photo,

[0073] As can be seen from the two different support bracket center drawings of Fig. 2 [A] and [B],

[0074] A universal trailer (T) equipped with a support bracket for boat position control according to the present invention includes two main frames (10) that are separated from a front towing portion (11) in accordance with the shape of a boat (B), a plurality of crossbars (20) that connect the main frames and are installed at a distance from each other, and wheels (W) equipped on each main frame.

[0075] In particular, the crossbar (20), which is one of the core components of the present invention, has two sidebars (21) some or all of which are connected to each main frame (10), and a V-shaped center bar (23) provided between the sidebars.

[0076] In Fig. 1, only the first crossbar at the front is straight, and the remaining four crossbars have a center bar (23) of a shape and dimensions corresponding to the shape of the keel (B1) of the boat.

[0077] In addition to the rear main wheel (W), the front towing unit is equipped with an auxiliary wheel (w), which is used to maintain the level when the towing unit (11) is not connected to the vehicle, and is also used to connect the towing unit to the vehicle. After connection, during transport, the auxiliary wheel is configured to be separated from the ground by rotating the handle attached next to the vertical axis.

[0078] It is desirable that the above main wheel (W) be equipped with a shock absorber of suitable type so as to provide cushioning during driving.

[0079] Considering mass production and sturdiness, etc., the main frame (10) is constructed by processing an H-beam of a predetermined thickness and strength, and the crossbar (20) is manufactured by processing a square pipe of a predetermined thickness and strength, and brackets are provided at both ends of the crossbar to facilitate bolting or welding for insertion between the upper and lower plates of the H-beam type main frame.

[0080] Meanwhile, it is preferable that the crossbar (20) be equipped with a displacement supporter (30) so that boats (B) having various shapes and sizes can be universally loaded.

[0081] This displacement supporter (30) includes a height-adjustable first support (31) coupled to each side bar (21) and an angle-adjustable second support (33) connected to the top of the first support.

[0082] The above first support (31) is equipped with a multi-stage first fastening hole (H1) and is fixed to each side bar (21) in a height-adjustable state using a U-bolt, D-bolt, or other bolt.

[0083] The above second support (33) is provided with a bolt that acts as a shaft at the top of the first support (31), and an arc-shaped long hole type second fastening hole (H2) is formed at the bottom of the shaft bolt, so that the angle is adjusted to correspond to the angles on both sides of the bottom of the boat with the shaft bolt as the axis, and then the bolt and nut connected to the second fastening hole (H2) are tightened to fix the angle adjustment state.

[0084] In addition, a receiving portion (33a) is provided on the upper part of the second support (33), and a longitudinal support bar (35) is provided in this receiving portion to support both sides of the keel (B1) of the boat (B) in a balanced manner.

[0085] For example, the support bar (35) uses a wooden frame, and a synthetic resin pad (35a) is provided on the upper part of the support bar for cushioning and gliding characteristics.

[0086] When launching a boat from a slalom, when the trailer itself is pushed backwards and the boat is floated on sea or fresh water, the back of the boat is submerged in the water along with the slope of the slalom slope and buoyancy is generated, so the boat naturally floats on the pad by its own weight (since the back of the trailer is tilted to match the slope and submerged in the water and the boat stays level with the water surface due to buoyancy, it can also receive help from the reverse thrust of the propeller driven by the motor), or the pushing force of the worker can all work together to help launch the boat from the front easily.

[0087] The support bar (35) and pad (35a) have elasticity and are deformed by the boat load when loaded, so they naturally adhere to the bottom of the boat.

[0088] Furthermore, it is preferable that the universal trailer (T) according to the present invention is configured such that a V-shaped support bracket (40) corresponding to the bottom shape of the boat (B) is coupled to part or all of the center bar (23) of the crossbar (20), and a pad (41) is provided on the upper part of the support bracket, i.e., the V-shaped upper surface (40B), so as to secure cushioning and gliding characteristics.

[0089] In the drawing, this support bracket (40) is mounted on the crossbar (20) equipped with the first front center bar (23) (the second front crossbar among all crossbars).

[0090] As needed, the entire crossbar (20) equipped with the center bar (23) or one or two center bars (23) equipped with the crossbar (20) in the front is provided, and the center bar (23) is fixed by bolting the center bar (23) to the fastening hole (40A) of the vertical side part of the support bracket (40) using U-bolts, D-bolts, or other bolts in the long holes on both sides.

[0091] The keel (B1) of the boat (B) is supported by contact with a V-shaped support bracket (40) (pad (41)) in some part, especially the front keel (B1) part where the load is applied when loading,

[0092] It is desirable that the middle and later parts where the main load is applied be configured in a form in which the bottom surfaces on both sides of the keel are entirely supported in contact with each other through the support bar (31) (pad (35a)).

[0093] It is preferable that the center bar (23) of the rear crossbar (20) without a support bracket (40) be loaded in a form that does not contact the keel (B1) of the boat and is supported by the support bar (35).

[0094] Furthermore, it is preferable that the above pad (41) has a non-support portion (41e) that protrudes outwardly beyond the section of the upper surface (40B) of the support bracket (40).

[0095] In addition, it is preferable that the horizontal upper surface (40B) connected to the vertical side surface (40A) of the support bracket (40) be spaced apart from the upper surface of the crossbar (23), particularly the center bar (23), to form a spaced portion (g).

[0096] A universal trailer (T) equipped with a support bracket (40) as described above is useful for moving a boat and launching and loading at a slalom.

[0097] Specifically, when a boat (B) located in sea or fresh water and maintained horizontally according to the water level and buoyancy is loaded onto a trailer (T) that is tilted along the slope of a slalom and partially submerged in water, the V-shaped bottom of the boat, together with the keel, is naturally guided toward the center of the trailer as the boat moves forward (by the thrust of the propeller).

[0098] When the front keel (B1) of the boat (B) enters the section of the surf bracket (40), the keel does not enter exactly the center of the V-shaped surf bracket (40) (i.e., the pad (41)), but naturally slides while contacting the non-supporting portion (41e) with relatively greater elasticity or the central section of this non-supporting portion and is guided to the central V-groove of the support bracket.

[0099] Even if it comes into contact with the support bar (35) (pad (35a)) that is inclined inward to fit the shape of the bottom side of the boat (B), it is naturally guided to the support bracket (40), and when it comes into contact with the non-support portion (41e) or the central section of the non-support portion, it naturally slides and is guided to the central V-groove of the support bracket.

[0100] At this time, the horizontal upper surface (40B) connected to the vertical side (40A) of the support bracket (40) (the pad (41) is arranged in a slanted shape to match the slope of the shipyard, so that the upper surface (40B) end is arranged higher.

[0101] As shown in the cross-sectional view within the upper dashed line ellipse of Fig. 2 [A], the upper surface (40B) first comes into contact with the keel (B1) of the boat, and as the boat enters, the weight is applied and the boat naturally displaces downward, which helps the boat enter naturally and prevents damage.

[0102] In this way, the support bracket (40) can provide a simple and reliable boat position control, i.e., a position guidance function, especially when loading the boat (B).

[0103] The length of the non-supporting portion (41e) of the above pad (41), the material (e.g., PE material), the elasticity, and the dimensions, material, elasticity, etc. of the horizontal upper portion (40B) connected to the vertical side portion (40A) of the support bracket (40) can be selected as needed.

[0104] In addition, due to the support bracket (40), when launching or unloading the boat (B), the trailer itself is moved backwards from the slalom to enter the sea or fresh water to a level where the boat can float, and the boat maintains a horizontal position along the water surface by buoyancy and moves away from the rear of the trailer, so that the final unlocking can be performed while being controlled from the slalom in front of the boat.

[0105] The boat can be launched without the operator having to submerge his body in the water, using some or all of the boat's own weight, the motor's reverse operation, and the operator's pushing force.

[0106] Furthermore, it is possible to safely protect the sensitive keel, especially the front keel, when loading and moving the boat.

[0107] Also, as in the modified example illustrated in FIG. 2 [B], a roller (41r) is provided in the center of the support bracket (40) so that the operation can proceed more smoothly by the rolling behavior of this roller with respect to the boat keel (B1) during loading of the boat and during launching or unloading.

[0108] This roller (41r) has a centrally concave shape, and the inclination of the roller corresponds to the V-shaped arrangement of the surf bracket (40) and the pad (41), so that it is configured to accommodate a smooth boat keel (B1).

[0109] Meanwhile, it is preferable that the universal trailer (T) according to the present invention has a support guard (50) provided between the towing part (11) of the main frame (10) and the front crossbar (20) to support the front keel (B1) of the boat (B).

[0110] This support guard (50) is used to tie down a boat loaded on a trailer and prevent the boat from being pushed forward and damaged during transport.

[0111] Also, when launching a boat from a slalom, when the trailer itself is moved backwards to float the boat in seawater or freshwater, the back of the boat is submerged in water along with the slope of the slalom slope, generating buoyancy, so that the boat naturally slides along the pad (35a, 41), which helps control the launching situation from the front.

[0112] Specifically, it is preferable that the above support guard (50) is composed of first and second support guards (51, 53) that support different parts of the front kill (B1).

[0113] It is preferable that the first and second support guards (51, 53) be adjustable in angle or length, or both.

[0114] The above first support guard (51) is provided on a pillar (50P) fixed to the rear of the auxiliary wheel (w) in the towing part (11) of the main frame (10) and supports the front keel (B1) of the upper boat (B) relatively higher than the second support guard (53), and is composed of a first rear member and a second rear member connected to the pillar (50P).

[0115] The first rear member is a square pipe and the second rear member is a bracket type, so the degree of lower protrusion is adjusted through the multi-stage first adjustment hole (h1) of the two rear members, and then the bolt is tightened to firmly fix the adjustment state.

[0116] The rear end of the second rear member is equipped with a reel-type central recessed pad (P) to stably support the upper boat (B) front keel (B1).

[0117] In addition, it is preferable that the first support guard (51), especially the first rear member, be equipped with a safety chain (50C), and the front keel (B1) of the boat be equipped with a tie ring (B2), so that the end of the safety chain (50C) can be hung to serve as a double safety device when loading, launching, or transporting the boat.

[0118] The second rear member is bent so that the rear end is upward, so that the pad (P) is stably attached to the boat's streamlined upward front keel.

[0119] The above second support guard (53) is provided between the towing part (11) of the main frame (10) and the first front crossbar (20).

[0120] The square pipe that constitutes the towing section (11) is extended to the first crossbar (20) and the second support guard (53) is mounted on the reinforced square pipe.

[0121] The first rearward adjustment member, in particular the first rearward adjustment member using a square pipe, is connected to the angle-adjustable multi-stage second adjustment hole (h2) formed on the arc-shaped bracket of the second support guard (53), and is configured to be fixed at a predetermined angle by tightening a bolt after adjusting the angle.

[0122] In addition, a second rearward adjustment member, particularly a bracket-type second rearward adjustment member, is coupled to this first rearward adjustment member, and an axle pin bolt and an angle-adjustable multi-stage second adjustment hole (h2) are provided, so that the angle is finely adjusted around the axle pin bolt, and then the bolt coupled to the second adjustment hole (h2) is tightened to fix the angle adjustment state.

[0123] The above second support guard (53) supports the front keel (B1) of the lower boat (B) relatively more than the first support guard (51), and a pad, particularly a wedge-shaped pad (p), is provided at the rear end of the second rearward adjustment member to support the front keel in close contact without damage.

[0124] An angle adjustment part can be introduced into the first support guard (51) as needed, and a length adjustment part can also be introduced into the second support guard (53).

[0125] In addition, the universal trailer (T) according to the present invention may further include a third support guard (55).

[0126] This third support guard (55) includes a winch reel (57), which is provided on the first rear member connected to the pillar (50P), and the end of the tie bar (57a) connects to the tie ring (B2) of the front keel (B1) of the boat (B), thereby enabling the boat (B) loaded on the trailer to be firmly tied.

[0127] Also, when launching a boat, that is, entering the slope of the launching yard slope, tilting to match the slope angle and submerging the boat (B) to a predetermined degree, slowly releasing the safety chain (50C) that ties the boat (B) to match the slope angle of the trailer and turning the handle of the winch reel (57) to release the tie bar (57a), this can help to slowly and safely carry out the launching and unlocking work of the boat from the front of the boat without the worker coming into contact with the water.

[0128] When loading a trailer (T) on a boat (B), the trailer is to be driven backwards onto the slope of the dock using a towing vehicle.

[0129] By towing the boat through various power sources, the bottom of both sides of the keel (B1) and the front keel are naturally brought into close contact with the pads (P,p) of the first and second support guards (51,53) via the support bar (35).

[0130] The safety chain (50C) is hung on the release ring (B2), and then the hook member at the end of the winch reel (57) is connected to the release ring to complete loading.

[0131] The tow truck can be moved forward to leave the dock and begin moving.

[0132] In the above description, the types of various boats, leisure boats, the towing power of trailers, and the commonly known technologies used for each component of the trailer are omitted, but those skilled in the art can easily guess, infer, and reproduce them.

[0133] In addition, in explaining the present invention above, a trailer having a specific shape and structure has been mainly described with reference to the attached drawings, but the present invention can be modified, changed, and substituted in various ways by those skilled in the art, and such modifications, changes, and substitutions should be interpreted as falling within the scope of protection of the present invention.

Claims

1. Two main frames separated from the front towing section in accordance with the shape of the boat; A plurality of crossbars connecting the above mainframes and installed at a distance from each other; and Including wheels provided on each of the above main frames; Some or all of the above crossbars are provided with V-shaped support brackets corresponding to the shape of the bottom of the boat, A universal trailer characterized in that the V-shaped upper surface of the above support bracket is provided with a pad.

2. In paragraph 1, The above pad has a non-support portion that protrudes outwardly beyond the upper surface of the support bracket, A universal trailer characterized in that the upper surface of the above support bracket is spaced apart from the upper surface of the crossbar.

3. In paragraph 1, A universal trailer characterized in that each side bar of the above crossbar is provided with a displacement supporter including a height-adjustable first support and an angle-adjustable second support connected to the upper part of the first support.

4. In any one of paragraphs 1 to 3, A universal trailer characterized in that a receiving portion is provided on the upper part of the second support, and a longitudinal support bar is provided in the receiving portion.

5. In any one of paragraphs 1 to 3, A support guard is provided between the towing part of the above main frame and the front crossbar to support the front keel of the boat. A universal trailer characterized in that some or all of the crossbars further include two sidebars coupled to each main frame and a V-shaped center bar provided between the sidebars.

6. In paragraph 5, The above support guard is composed of first and second support guards that support different parts of the front kill, A universal trailer characterized in that the first and second support guards are adjustable in angle or length, or both.

7. In paragraph 5, The front keel of the boat is equipped with a tie-down ring, A universal trailer further comprising a third support guard equipped with a winch reel for binding the above-mentioned tie ring.

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