KR200189207Y1 - A wheel axle connection structure to the boat using of the trailer - Google Patents

Abstract

The present invention relates to an axle connection structure for coupling wheels and the like mounted on a boat trailer for enjoying sports on the beach. The trailer is mounted at the rear of the vehicle while the boat is placed in the boat trailer to float the boat above sea level. After entering the trailer into the water after installation, it is possible to prevent water from penetrating by the considerable water pressure when the boat enters the water, and also to add impurities between the hubs that build up the axles and wheels after a certain period of time. It relates to a boat trailer axle connection structure that allows for a smooth and convenient cyclic filling of lubricating oil (generally filled with grease oil) without dismantling between wheels and hubs and shafts.

Description

A wheel axle connection structure to the boat using of the trailer}

The present invention relates to an axle connection structure for coupling wheels and the like mounted on a boat trailer for enjoying sports on the beach, and in particular, the rear of the vehicle in a state in which the boat is placed in the trailer for the purpose of causing the boat to rise above the sea level. After installing the trailer into the trailer and entering the boat, the boat floats in the water.At this time, the axle is prevented from infiltrating the water by considerable water pressure at the connection part of the trailer wheel entered into the axle. Boat trailer axle connections to allow smooth and convenient cyclic filling of lubricating oil (typically filled with grease oil) to prevent impurity injection between the wheel and hubs that build up wheels without dismantling between wheels and hubs and axles It's about structure.

In order to float the boat on the surface of water to enjoy leisure boats, which are commercially available for leisure sports, after the boat is placed on the boat trailer, the trailer is connected to the front end of the body and transported to the shore or riverside. It is common to let the trailer enter underwater to float the leisure boat above sea level or river level.

In order to enjoy the leisure boat, the trailer must enter the water inevitably, and the depth of the water between the water surface and the bottom of the trailer entered into the water should normally be about 1m to 1.5m in order for the boat to float on the surface normally.

At this time, the axle connecting part connecting the trailer wheel entered into the water receives a considerable water pressure. As such water pressure frequently causes impurities or water to penetrate the axle connecting part, which easily corrodes the axle connecting part. Although the phenomenon has been pointed out as an inevitable problem, it is common that the axle connecting portion connecting the trailer wheel, which is generally commercialized, is configured in the same way as the wheel connecting structure of a general vehicle.

That is, the hubs are laid at both ends of the axle, and the wheels with the air pressure filled in the wheels are laid, and the grease (grease) is applied to the part connected with the hub at the shaft end to prevent corrosion due to the penetration of water or impurities. It is filled and used in a sealed state.

In the case of the axle connecting structure, such a structure can be driven on the ground without any group, or even if the water passes through the pool, it is not easy to infiltrate the connecting part of the axle with impurities because of no water pressure. Lubricating oil (grease oil) filled between the shaft and the bearing is generally used until it is filled in a sealed state at the time of manufacture and reaches the end of its service life.

However, the axle structure has the same structure as the above structure in the trailer used mainly for leisure, that is, the boat trailer used for enjoying sports boats on the coast or the beach by the axle connecting structure commonly used in such a general road situation. When entering into a certain amount of water, water penetrates easily by considerable water pressure to the bearing part connecting the hub and shaft by a certain water pressure, or the wheel itself is detached from the trailer by such a corrosion action. This phenomenon has been pointed out that the expensive boat is damaged or damaged or damaged.

In addition, there is a problem that the wheel and the hub is detached while driving the road in a state in which the connection between the bearing, the shaft and the hub is corroded, and the risk of safety accident is always included.

Also, if water or impurities penetrate the hub-shaft joint by water pressure, replace all wheels, disks and hubs at the shaft end with new ones, or replace them with new ones and refit them. Many problems have been pointed out, such as the fact that there is no choice but to do the filling work, which is accompanied by considerable effort in the work, as well as maximizing the maintenance cost due to frequent replacement and repair.

Therefore, the present invention was devised to overcome such a problem, and by modifying the axle connection structure of the trailer for boats, water or other impurities penetrate the axle connection part even when the trailer wheel part enters the water, even though it receives considerable hydraulic pressure. It is an object of the present invention to prevent the phenomenon that the axle connecting portion is corroded by preventing in advance.

In addition, the present invention avoids the hassle of dismantling or separating all the axle connections in filling grease, which is lubricating oil periodically, for smooth operation of the bearings formed on the axle connections. Another object of the present invention is to achieve a simple operation of filling the grease oil by injecting it with a filling tool filled with grease oil so as to be filled by a simple operation from the outside.

In addition, the present invention ensures airtightness and sealability as much as possible while grease oil is always filled in the axle joints, and prevents the ingress of impurities or water from the outside, thereby ensuring safety due to corrosion of the axle joints. To prevent accidents in advance, there is another object of the present invention.

The present invention for achieving the above object, has a hollow shape and the trailer axle pipe (10) having a through hole 11 is formed in the appropriate portion, the flow path 22 is inserted into the end of the axle pipe (10) length The insertion portion 21 penetrates in the direction, and the outlet port 29 penetrates the outer circumferential surface so that the grease oil outlet portion 24 passing through the flow passage 22 and the bearings 5 can be arranged at both ends at regular intervals. The bearing shaft portion 25 to allow the bearing, and the threaded portion is formed, and the pin hole 27 penetrates the outer peripheral surface of the end portion, and a fastening portion 26 for fastening the hub 30 for mounting the wheel 4 thereon. Steps 23, 23 'and 23' are formed in multiple stages so as to be made in a multi-stage, and the connecting rod 20 and the threaded holes 32 are formed in a single shape, which is formed into a smaller and smaller diameter. The guy to be built in the bearing shaft 25 of the connecting rod 20 on one side of the disk plate (31) Insertion tool 33 and the insertion hole 34 for inserting the injection cap 40 to the other side are integrally protruded into a hollow shape, respectively, and are spaced apart from each inside of the coupling hole 33 and the insertion hole 34 The hub 30 for forming the jaws 35 and 35 'so as to be spaced apart by a predetermined interval when the bearing 5 is laid, and the spring 41 for holding the ball 41 and the ball 41 are piled up. Inserting and fastening the nipple 45 into the closed end of the through-hole 44, the other end is inserted into the insertion hole 34 of the hub 30 of the cylindrical injection cap 40 having a state of being opened When grease oil is injected, grease oil is filled between the bearings 5 spaced apart from each other in the hub 30 through the injection cap 40, and the remaining grease oil passes through the bearing 5 and the retainer 6, and then is connected to the connecting rod. The grease oil outlet 24 of the 20 flows toward the outlet 29, and the remaining grease oil flows back into the insertion part 21 flow path 22 by internal pressure. Correct also this residue to flow into the configuration wherein the flow into the outflow pipe trailer axle.

1 is an exploded perspective view of the present invention,

2 is a cross-sectional view showing a combined state of the present invention,

Figure 3 (a) (b) is a cross-sectional view showing an embodiment of a state in which the injection cap of the present invention is inserted into the insertion slot of the hub,

Figure 4 is a perspective view showing a trailer for a boat in a state mounted by the present invention,

Figure 5 is a schematic diagram showing a state in which the trailer is locked in the water to float on the surface of the sea or relegation after seating the boat on the boat trailer according to the present invention.

※ Brief description of the main symbols in the drawings

1: vehicle 2: trailer 3: boat 4: wheels

10: trailer axle pipe 11: through 20: connecting rod 21: insert

22: flow path 23.23 ', 23': step 24: grease oil outlet

25: bearing shaft portion 26: fastening portion 27: pin hole 28: pin 30: hub

31 disc plate 32 screw hole 33 coupling member 34 insertion slot 35,35 '

40: injection cap 41: ball 42: spring 43: nut 44: through hole 45: nipple

With reference to the accompanying drawings, the operating state of the present invention by the above configuration will be described in detail.

The present invention is a trailer axle pipe 10 for mounting the trailer wheel (4), as shown in Figures 1 to 4, and the connecting rod 20 and the connecting rods are respectively fixedly connected to the trailer axle pipe (10) end 20 is fixedly coupled to the hub 30 and the hub 30 is fixed to the end is composed of an injection cap 40 for injecting grease oil.

When explaining the components of each of the main components of the present invention configured in this way in more detail, first the trailer axle pipe (10) has a general hollow pipe shape and the injection of the grease oil to the appropriate portion of the outer peripheral surface of the trailer axle pipe (10) When filling through the cap 40 to facilitate the discharge of the air and the discharge of the grease oil of the remaining portion is formed through the hole 11 so that the filling filling operation of the grease oil through the injection cap 40 can be made smoothly.

The connecting rods 20 are inserted into both ends of the above-described trailer axle pipe 10 so as to be firmly and securely maintained by welding or the like, and fixedly coupled to each other. A pipe having a predetermined diameter as shown in the drawing. Steps 23, 23 'and 23' are formed in multiple stages such that the insertion part 21, the grease oil outflow part 24, the bearing shaft part 25, and the fastening part 26 are formed. It is molded in a shape that becomes smaller and smaller in diameter so that it is integrally molded.

At this time, the insertion portion 21 is a portion to be inserted into the end of the axle pipe 10 and the length of the flow passage 22 having a constant diameter in the center from the center of the shortest end of the insertion portion 21 to the grease oil outlet 24 Perforate in the direction. Thus, when the perforated flow path 22 fills the grease oil, the remaining grease oil is naturally discharged by the filling pressure along the flow path 22 so that the grease oil is airtight on the bearing 5 without generating air bubbles. To maintain filling and sealing properties.

Meanwhile, the grease oil outlet 24 is formed to be integrally protruded from the insertion part 21, but is slightly smaller than the diameter of the insertion part 21 to form the step 23, and the grease oil outlet 24 has an outer peripheral surface. The outlet 29 penetrates the part. In this way, the perforated outlet 29 has a shape that meets the end of the above-described flow passage 22 so that grease oil can be introduced into the flow passage 22 in the insertion portion 21 through the outlet 29 and filling operation. The grease oil is allowed to flow into the flow path 22 through the outlet port 29 under the influence of the internal pressure so that a smooth filling can be achieved.

Meanwhile, the bearing accumulator 25 protruding from the grease oil outlet 24 is integrally provided, but is formed to be smaller than the diameter of the grease oil outlet 24 so that the step 23 'is made. On both ends of the bearing accumulator 25, the bearing 5 to be installed when the hub 30 is to be described later is mounted.

The fastening part 26 which protrudes integrally from the bearing shaft part 25 which is comprised in this way, and protrudes while forming the step 23 'is formed, and a thread is formed in the outer peripheral surface of the fastening part 26, and a pin is provided at the end side. A pin hole 27 is formed to allow the nut 8 and the like to be fixed to the hub 30 to be fixed by the 28 and the like.

The hub 30 may employ the same structure as in the prior art, and in one embodiment, referring to the accompanying drawings, the screw hole 32 is fixed to the wheel of the wheel 4 by using a fastening means. The disk plate 31 is formed of a plurality of, and the coupling plate 33 and the insertion tool 34 so as to protrude a predetermined length to both sides of the disk plate 31, respectively, to have a hollow shape.

On the other hand, in the inner circumferential surface portion of the coupler 33 and the insertion tool 34, the bearing accumulating portion 25 of the connecting rod 20 is located and the outside of the coupler 33 to facilitate the mounting of the bearing 5. Spacer jaws 35 and 35 'are formed in the inner circumferential surface portion and the insertion hole 34, respectively, to prevent the bearing 5 from flowing to the inner center of the coupling hole 33 and the insertion hole 34, respectively. Make sure

In addition, the gap between each of the spacers 35 and 35 ′ configured as described above allows the bearings 5 to be always maintained at a constant interval, as well as to secure a space in which grease oil can be filled at a constant pressure. Make it possible.

The injection cap 40 is fixedly inserted into the insertion slot 34 of the hub 30 so that a grease oil filling tool (or filling) filled with grease oil without a worker disassembling the wheel 4 or the hub 30. Tool) (not shown) to ensure a smooth filling and filling of the grease oil.

As shown in the drawing, the injection cap 40 acting as described above is closed at one end, but the through hole 44 is drilled, and the other end is formed of a cylindrical member having an open shape. It is to be fixedly inserted into the insertion slot (34).

At this time, the through hole 44 perforated at one end of the injection cap 40 has a well-known common fluid injection structure. Briefly introducing the structure, a male screw part is formed at one side and has a hollow shape and a short inlet inside. The nipple 45 for holding the ball 41 to be supported by the spring 42 is inserted into the through hole 44 with the inlet side where the ball 41 is located to the outside, and then the nut 43 or the like. It is to be fixed to the male screw portion.

Therefore, when the end of the grease filling tool (not shown) is pressed against the inlet of the nipple 45 of the injection cap 40 by the structure of the injection cap 40, the ball 41 is pressed. At the same time, the spring 42 is urged so that the grease oil is forcedly press-filled through a gap formed between the ball 41 and the inlet.

On the other hand, the injection cap 40 is formed in a cylindrical shape as described above, one end is sealed, the other end is opened and the other end is inserted into the insertion hole 34 of the hub 30 and closed at one end. The through hole 44 may be formed and provided with a nipple 45 for filling and injecting grease oil.

That is, the shape of the injection cap 40 is to have the same cylindrical shape that one end is closed and the other end is open and to the insertion hole 34 side of the hub 30 as shown in (b) of FIG. The insertion insertion portion is not the other end of the injection cap 40, but is closed and inserts one end portion to which the nipple 45 is fixedly inserted so that the nipple 45 end of the injection cap 40 protrudes to the outside. In order to prevent it from being prevented, the structure formed to protect the nipple 45 from an impact from the outside will be within the scope of the present invention.

The present invention constituted by the structure as described above is inserted into the insertion portion of the connecting rod 20 to the end of each of the trailer axle pipe (10) in a hollow shape to be fixed by a method such as welding, into the insertion portion 21 The retainer 6 is inserted in one end of the bearing accumulator 25 to maintain the airtightness, etc. in the grease oil outlet 24 protruding integrally with the step 23 from the bottom. Insert and accumulate the hub 30.

In such a state again, bearing 5 is laid on the other end of bearing axis 25 to have a shape in which bearing 5 is adhered to and spaced apart from 35 and 35 'of hub 30, respectively. After fastening by using a nut (8) to the fastening portion 26, the screw of the connecting rod 20 protruding outward from the center of the bearing (5) arranged on the other end is penetrated through the fastening portion (26) The pin 8 is inserted into the pin hole 27 to prevent the nut 8 from being loosened by natural loosening.

When the coupling and the coupling of the hub 30 and the connecting rod 20 is completed as described above, the injection cap 40 is forcibly inserted into the insertion slot 34 of the hub 30, and then the coupling is completed. When the grease is injected while forcibly pressing the ball 41 which is inserted into one end of the nipple 45 of the injection cap 40 by using a filling tool and is pressed by a spring 42, the grease is injected into a bearing ( 5) The grease oil passing through the retainer 6 by the pressing force which is filled between the bearing 5 and the bearing 5 of the hub 30 and recharged again passes through the grease oil outlet 24 of the connecting rod 20. ) A certain amount flows to the outlet side penetrating the outer circumferential surface.

The amount of grease oil thus flowed is in contact with the outlet port 29 orthogonally to the outlet port 29 even when the worker refills the grease oil or continues the excessive filling operation. Grease oil flow path penetrating the center of the insertion part 21 and flows out to the end of the insertion part 21.

At this time, in order for the worker to be continuously filled with grease oil without being resisted by internal pressure, etc. using the grease oil filling tool, a hole 11 is formed at an appropriate portion of the outer circumferential surface of the trailer axle pipe 10 as described above. When the grease filling tool injects grease oil, air should be leaked out through the through hole 11 by the corresponding pressure so that the work can be performed smoothly.

Therefore, even though the residual amount of grease may be leaked to the outside during the grease filling process, the trailer axle pipe 10 or the hub 30 is provided through the through hole 11 from the outside. It is impossible to flow in due to the sealing phenomenon caused by the filling of grease.

That is, even when the trailer 2 with the boat 3 mounted therein enters the water, the hydraulic pressure applied to the inside of the hub 30 is applied through the axle pipe 10 through the hole 11 and the front of the injection cap 40. Since the pressures applied to each other are the same, the density of the filled grease oil is only dense, and thus the penetration of water into the hub 30 due to the water pressure can be completely blocked, thereby protecting the bearing 5. .

Therefore, according to the present invention, the trailer wheel is connected by the water pressure when the trailer enters the water in order to float the boat on the water surface while the boat is mounted on the boat trailer to enjoy the boats commercialized for leisure sports. It can be expected to completely prevent the water from easily penetrating into the site.

In addition, the present invention, if you want to fill the grease with the need for grease oil, completely remove the wheel and hub, etc. completely removed from the cumbersome work of refilling the grease oil, a simple grease filling tool through the injection cap only from the outside It can be used to fill the trailer wheel, which makes it easy and quick to manage the trailer wheels, which has the advantage of speeding up the maintenance cost of the trailer. Also, grease oil can be simply injected at an appropriate interval. It is a very useful design for safety and economics, such as to prevent the safety accidents that may be caused by the wear of parts due to.

In addition, the present invention, the closed end of the injection cap is inserted into the insertion slot of the hub, as a result can be expected to protect the nipple from the expected external shock by allowing the nipple to be buried in the insertion slot.

Claims (2)

Trailer axle pipe 10 having a hollow shape and the through-hole 11 is formed in the appropriate portion, An insertion portion 21 through which the flow passage 22 inserted into the axle pipe 10 end penetrates in the longitudinal direction, and a grease oil outlet portion through the flow passage 22 through the outlet 29 through the outer circumferential surface thereof. 24) and a bearing tongue 25 for allowing the bearing 5 to be laid at both ends at a predetermined interval, and a thread is formed, and a pin hole 27 penetrates the outer peripheral surface of the end to mount the wheel 4. Steps 23, 23 'and 23' are formed in multiple stages such that the hubs 30 are fastened to the fastening part 26 for fastening the hub 30, and are molded into a shape that becomes smaller and smaller in diameter. Connecting rod 20 and Inserting and inserting the injection cap 40 into the coupling hole 33 and guiding the screw hole 32 is guiding so as to be arranged in the bearing shaft 25 of the connecting rod 20 on one side of the disk plate 31, which has a plurality of holes When the insert (34) is integrally projected and formed into a hollow shape, respectively, the coupling (33) and the insert (34) in the inner space of the bearing (5) by forming the separation jaw (35, 35 ') in each Hub 30 to be spaced apart at regular intervals, A cylindrical injection having a state in which the ball 41 and the nipple 45 in which the spring 42 for holding the ball 41 is held are inserted into and fastened to the sealed one end through-hole 44, and the other end is opened. A boat trailer axle connection structure, characterized in that the cap 40 is inserted into and fixed to the insertion slot 34 of the hub 30. The method of claim 1, To form the inlet side of the nipple (45) coupled with the grease oil filling tool inside the closed end of the injection cap 40 and fastening the nut 43 to the outside to allow the other end opened to be identified from the outside. For the boat, the nipple 45 is fastened to the insertion hole 34 of the hub 30 in a recessed state in the outer shape injection cap 40 to be protected from impact from the outside. Trailer axle coupling structure.