KR200378586Y1 - Stern drive system - Google Patents

Abstract

The present invention relates to a stern propulsion system for propulsion and reversing of ships that can realize solid parts and structure simplification, outboard motor speed, efficiency increase and fuel cost reduction.

The present invention encapsulates the joint area between the power transmission shaft on the engine side and the propeller shaft on the propeller side using a sealed ball housing structure, thereby eliminating contamination or corrosion problems such as foreign matters, and at the same time, adjusting the housing By setting the part as the center of rotation, it is possible to secure the structural rigidity and durability of the joint part, thereby increasing the efficiency, reducing the fuel cost, and achieving the speed of the outboard motor level, while also providing the propeller of the shaft housing. By adopting a protector that can close the tip of the side and a linkage that connects and supports the shaft housing to the base plate side of the hull, the rope can be prevented from being inserted into the drive in the event of a rope winding accident. To prevent torsion Simplified structure provides stern propulsion device that can greatly reduce maintenance time and cost.

Description

Stern propulsion system {Stern drive system}

The present invention relates to a stern propulsion device for propulsion and reversal of a ship, and more particularly, a ball housing surrounding a joint portion between a power transmission shaft on the engine side and a propeller shaft on the propeller side, and the upper and lower sides of the propeller shaft. By acting as a pivot point during adjustment, it is possible to secure structural rigidity and durability at the joint site, thereby increasing efficiency, reducing fuel costs, and speeding outboard motors, and especially preventing rope from being inserted into the drive. The designed protector and the link device that prevents the torsion of the drive itself can be used to prevent damage to the drive as much as possible, and the stern propulsion device that can greatly reduce maintenance time and cost by simplifying the solid parts and structure It is about.

In general, the stern propulsion device is a device that is installed in the rear of the ship to propel or reverse the ship and to change the direction.

When the power of the engine installed inside the hull is transmitted to the propeller through the power transmission shaft and the propeller shaft, the propeller rotates and pushes water so that the hull can move forward.

The stern propulsion system includes a propeller shaft connected to the power transmission shaft side of the engine and a ball joint or a universal joint, a shaft housing surrounding the propeller shaft, a propeller assembled at the end of the propeller shaft, and two vertical and horizontal directions for adjusting the propeller shaft. It consists of a cylinder, etc., and it is possible to adjust the traveling direction of the ship by rotating the joint part about the central axis.

However, most existing stern propulsion devices have a problem in terms of performance or durability due to the following structural defects.

① The power transmission shaft and floppler shaft are directly exposed to the outside after being directly connected by the joint structure, so there is a problem of contamination or corrosion such as foreign matters, and the joint part acts as the center of rotation directly while being exposed to external shock. Therefore, there is a disadvantage in having a structural weakness in terms of durability.

② Since the flow of propeller shaft rotating at high speed must be supported by only two cylinders, there is a high possibility of deformation due to torsion.

③ The most frequent problem in the stern propulsion system is the problem that the rope is wound around the propeller. Usually, the rope wound around the propeller is inserted into the drive and has to be disassembled and repaired and checked.

Therefore, the present invention has been devised in view of such a point, and by using a sealed ball housing structure to cover the joint portion between the power transmission shaft on the engine side and the propeller shaft on the propeller side, contamination or corrosion problems such as foreign matters are eliminated. In addition, by setting the ball housing part as the center of rotation when adjusting up, down, left and right, it is possible to secure structural rigidity and durability for the joint part, thereby increasing efficiency, reducing fuel cost, and speeding outboard equipment. The purpose is to provide a stern propulsion device that can be expected to be effective.

In addition, the present invention employs a protector that can close the propeller side end of the shaft housing, and a linkage that supports and supports the shaft housing to the base plate side of the hull, so that the rope is inserted into the drive in the event of a coiling accident. Another purpose is to provide a stern propulsion device that can significantly reduce the time and cost of maintenance by simplifying the solid parts and structure, such as preventing the occurrence of the damage and preventing the twist of the drive itself.

The present invention for achieving the above object is the engine-side power transmission shaft and the propeller-side propeller shaft is connected by a joint and is capable of transmission, the propeller is assembled at the end of the propeller shaft at the same time the outer shaft housing is wrapped, the hull side In the stern propulsion device comprising a structure that is connected to the shaft housing side, the rod of the upper trim cylinder and the rear side of the steering cylinder is supported on the rear end, the cylindrical housing is installed on the hull side; Spherical contact with the inner surface of the housing is freely rotatable and coupled to one end of the shaft housing characterized in that it comprises a ball housing member consisting of a ball surrounding the joint portion.

In addition, the shaft housing is characterized in that it is made of a structure supported by a link device connected between the hull side.

In addition, the linkage device is installed on the hull side to provide a left and right movement, a first link member which is supported by the pin and supported vertically by the pin, and the other end of the first link member and the shaft housing It is characterized by consisting of a second link member that is pinned to both ends on the side and capable of vertical movement.

In addition, it is characterized in that it further comprises a protector for closing the circumference of the propeller shaft while being mounted in the gap between the end of the shaft housing and the propeller.

In addition, the link device is characterized in that it comprises a left and right steering angle sensor device for detecting the left and right positions of the driver.

In addition, the trim cylinder is characterized in that it comprises a vertical trim angle sensor device for detecting the vertical position of the driver.

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

1 and 2 are front and rear perspective views showing the structure of the stern propulsion device according to the present invention.

1 and 2, the power transmission shaft 10 for providing power to the engine 100 side and the propeller shaft 11 for the rotation of the propeller may include a joint such as a constant velocity joint or a double universal joint. 12) is connected to the electric can be transmitted, the power is transmitted to the propeller 13 is assembled to the end of the propeller shaft 11 can be obtained the propulsion of the ship.

In addition, the shaft housing 14 surrounding the propeller shaft 11 is fixedly provided with vertical wings 24 for protecting the propeller 13 from reefs and various ropes.

The trim cylinder 15 and the steering cylinder 16 are provided as a means for vertically and horizontally adjusting the propeller shaft 11 including the propeller 13.

The trim cylinder 15 is arranged side by side in an inclined posture from the top of the propeller shaft 11, the rear end is coupled to the hinge structure rotatable up and down on the hull 110 side and supported at the same time the rod of the propeller shaft ( 11) is installed in a structure that is coupled and supported in a pin structure on the bracket (25a) side extending vertically upwards.

Accordingly, when the trim cylinder 15 is operated by external operation, the propeller 13 and the propeller shaft 11 can be adjusted up and down.

The steering cylinder 16 is arranged in the diagonal direction in the side of the propeller shaft 11, the rear end is coupled to the hinge structure to the left and right rotatable to the hull 110 side is supported at the same time the rod of the propeller shaft (11) Is installed in a supported structure that is coupled to the pin structure on the side of the bracket (25b) extending horizontally in the side.

Accordingly, when the steering cylinder 16 is operated by external operation, the propeller 13 and the propeller shaft 11 can be adjusted to the left and right.

In particular, the rod connecting portion of the steering cylinder 16 has a structure in which two “c” shaped members are pin-bonded at an offset of 90 ° to accommodate interference when the propeller shaft 11 is vertically adjusted.

One of the features provided by the present invention is that it employs a means that acts as a separate center of rotation for vertical and horizontal adjustments.

To this end, it is provided on the joint portion of the power transmission shaft 10 and the propeller shaft 11 to provide a ball housing member 17 that serves as a pivot center point.

The ball housing member 17 has a combination of a cylindrical housing 17a and a ball 17b having an empty inside to wrap the joint, and the housing 17a is disposed concentrically around the shaft. One side is installed to the plate 22 on the hull side, the ball 17b is installed in a structure that is extended to one side while being disposed inside the housing 17a to the shaft housing 14 side. do.

At this time, the ball 17b located inside the housing 17a is supported while being seated in the slide 17c which is attached to the inner wall of the housing and at the same time as the bush 17c having a curved seating surface. It may be in a rotatable state.

In other words, when the ball is adjusted up and down and left and right can play a role of the pivot point.

The ball housing member 17 is thus accommodated while sealing the joint 12 to the inside thereof, and also serves as a center of rotation of the drive when adjusting the up and down and left and right, and thus contamination or corrosion problems such as foreign matters on the joint part. Also, since the ball acts as a direct center of rotation and the joint needs only to act as a power transmission, it is possible to secure structural rigidity and durability for the joint.

Another of the features provided by the present invention is the adoption of a propeller shaft rotating at high speed and a means capable of stably supporting the entire shaft housing affected by the propeller shaft.

To this end, the link device 18 is provided between the plate 22 side of the hull 110 and the shaft housing 14 to exert a bearing force.

The link device 18 is composed of a "c" shaped member fastened to the plate 22 on the hull side and a rod-shaped member which is assembled by a pin penetrating vertically while being inserted into the inner side thereof to allow left and right movement. The holder member 18a, the first link member 18b extending in the forward direction while being supported by the pin and connected to the holder member 18a so as to be movable up and down, and the first link member 18b. The other end is inclined at an angle between the one end and the shaft housing 14 side, and both ends thereof are pin-coupled to constitute a second link member 18c capable of vertical movement.

The link device 18 is fixed to the hull side, and exhibits a solid support force to act as a vibration or vibration of the high-speed rotating drive to obtain a general sense of stability during operation of the drive.

In addition, the present invention provides a protector 19 that prevents the rope and the like from getting into the drive even if the rope is wound on the propeller 13.

The protector 19 is a kind of finishing member, and is fitted in the gap between the cap 23 and the propeller 13 assembled at the end of the shaft housing 14, that is, at the end of the shaft housing 14, and the propeller shaft 11. ) To close the perimeter.

Thus, the protector 19 surrounds the propeller shaft 11 while completely blocking the circumference between the propeller shaft 11 and the cap 23 so that there is no room for the rope to be inserted. Will be able to solve the neat.

In particular, the present invention provides a means for checking the left and right steering angle of the drive, for example, the left and right steering angle sensor device 20 and the vertical trim angle sensor device 21.

The left and right steering angle sensor device 20 is installed in the holder member (18a) side of the link device 18 to detect the left and right positions of the drive by the volume sensor method, the detection signal at this time is a conventional circuit It can be provided on the instrument panel of the steering room, and thus the driver can easily check the left and right positions of the drive, thereby obtaining ease of driving.

The upper and lower trim angle sensor device 21 is a sensor device based on a cable system installed on the trim cylinder 15 side, and is installed to change the trim position according to the change of draft , thus easily positioning the drive up and down. It can be confirmed.

For example, the steering angle is a volume installed in the holder member, which can be checked through the left and right steering angle sensor device of the current sensing method by rotation, and the trim angle is the volume of the cable installed in the cylinder connected to a separate sensor device (volume). Up and down steering angle sensor device of the current sensing method by rotation can be confirmed.

Figure 3 is a side photograph showing the installation state of the stern propulsion device according to the present invention.

As shown in FIG. 3, the engine 100 is disposed on the inside of the hull 110, and the stern propulsion device (drive) is disposed on the outside, and the power is provided between the engine 100 and the stern propulsion device. The transmission shaft is connected to provide power to the stern propulsion system.

4 and 5 is a side view showing a vertical adjustment state and the left and right adjustment state of the stern propulsion device according to the present invention.

As shown in Figs. 4 and 5, when the trim cylinder 15 and the steering cylinder 15 are operated, the drive is adjusted up and down and left and right, and the drive at this time rotates the ball housing member 17. Will move.

Left and right positioning, that is, steering (steering) can be made within the maximum left, right 23 ° + 23 ° total 46 ° range, and up and down positioning, that is, trim is up to 18 ° + 7 ° maximum 25 It can be made within a range.

As described above, the present invention provides a stern thruster including a ball housing surrounding a joint portion between a power transmission shaft and a propeller shaft, a protector designed to prevent a rope from being inserted into the drive, and a linkage device to prevent the drive itself from twisting. This has the advantage of ensuring structural rigidity and durability against the joints, and greatly reducing the time and cost of maintenance by simplifying solid parts and structures, such as preventing damage to the drive. Ultimately, the efficiency of the stern propeller can be increased, fuel cost can be reduced, and the outboard motor can be speeded up.

1 is a front perspective view showing the structure of the stern propulsion device according to the present invention

Figure 2 is a rear perspective view showing the structure of the stern propulsion device according to the present invention

Figure 3 is a side photograph showing the installation state of the stern propulsion device according to the present invention

Figure 4 is a side view showing a vertical adjustment state of the stern propulsion device according to the present invention

5 is a plan view showing the left and right adjustment state of the stern propulsion device according to the present invention

<Explanation of symbols for main parts of drawing>

10: power transmission shaft 11: propeller shaft

12 joint 13 propeller

14 shaft housing 15 trim cylinder

16: steering cylinder 17: ball housing member

18: link device 19: protector

20: left and right steering angle sensor device 21: vertical trim angle sensor device

22: plate 23: cap

24: Vertical wing 25a, 25b: Bracket

Claims (6)

The engine side power transmission shaft 10 and the propeller side propeller shaft 11 are connected to each other by the joint 12 so that they can be electrically driven, and at the end of the propeller shaft 11, the propeller 13 is assembled, and at the outside of the shaft housing ( 14) is enclosed, and each rod of the upper trim cylinder 15 and the side steering cylinder 16, which is supported rear end on the hull side is connected to the shaft housing 14 side to enable the vertical and horizontal adjustment In the stern propulsion apparatus comprising, Cylindrical housing (17a) installed on the hull side, and spherical contact with the inner surface of the housing (17a) is freely rotatable and coupled to one end of the shaft housing 14, the ball (17b) surrounding the joint portion Stern propulsion device characterized in that it comprises a ball housing member (17). The stern propulsion device according to claim 1, wherein the shaft housing (14) has a structure supported by a link device (18) connected between the hull side. The method of claim 2, wherein the linkage device 18 is a holder member (18a) is provided on the side of the hull and provides a left and right movement, and the first link member (1) that is supported by the pin once to the holder member (18a) to enable vertical movement ( 18b) and a stern propulsion device comprising a second link member (18c) which is pinned at both ends to the other end of the first link member (18b) and the shaft housing (14), respectively, for vertical movement. The stern propulsion according to claim 1 or 2, further comprising a protector (19) mounted within the gap between the end of the shaft housing (14) and the propeller (13) to close the perimeter of the propeller shaft (11). Device. The stern propulsion device according to claim 1 or 2, wherein the link device (18) comprises a left and right steering angle sensor device (20) capable of detecting left and right positions of the drive (stern propulsion device). The stern propulsion device according to claim 1, wherein the trim cylinder (15) comprises a vertical trim angle sensor device (21) capable of sensing the vertical position of the driver.