JP4067324B2 - Marine gas cylinder device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a marine gas cylinder device.
[0002]
[Prior art]
Conventionally, as a marine gas cylinder device, the cylinder block is connected to one of the hull and the propulsion unit, and the piston rod inserted into the cylinder block from the rod guide provided on the cylinder block is connected to the other of the hull and the propulsion unit, A piston rod side oil chamber on the piston rod housing side and a piston side oil chamber on the non-piston rod housing side are provided in the cylinder block, and the gas chamber that can communicate with the piston rod side oil chamber and the piston side oil chamber is a cylinder block. The cylinder block is provided with a switching valve device that is integrally formed with the piston rod side oil chamber, the piston side oil chamber, and the gas chamber.
[0003]
[Problems to be solved by the invention]
In the conventional technology, a communication path that connects the piston rod side oil chamber to the switching valve device, a communication path that connects the piston side oil chamber to the switching valve device, and a communication path that connects the gas chamber to the switching valve device are cast. The cylinder block is integrally molded.
[0004]
However, the casted cylinder block connection path requires processing such as burr removal after molding. When all of this connection path is provided in the cylinder block, the connection path becomes complicated or long. This increases the number of processing steps of the cylinder block.
[0005]
An object of the present invention is to simplify the handling of a connecting path provided in a cylinder block in a marine gas cylinder device, and to reduce the number of processing steps of the cylinder block.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, the cylinder block is connected to one of the hull and the propulsion unit, and the piston rod inserted into the cylinder block from a rod guide provided on the cylinder block is connected to the other of the hull and the propulsion unit. A piston rod side oil chamber on the piston rod accommodation side and a piston side oil chamber on the piston rod non-accommodation side are provided in the inside, and can be communicated with the piston rod side oil chamber and the piston side oil chamber. Oil chamber that receives gas pressure Are molded integrally with the cylinder block, and the piston rod side oil chamber and the piston side oil chamber Oil chamber subjected to gas pressure In the marine gas cylinder device in which the switching valve device that enables switching of the communication state is provided in the cylinder block, An oil chamber that receives gas pressure is provided on the side of one side of the piston block of the cylinder block, and a switching valve device is provided on the opposite side of the oil chamber that receives gas pressure across the piston rod of the cylinder block. A communication path connecting the piston rod side oil chamber to the switching valve device, a communication path connecting the piston side oil chamber to the switching valve device, and Oil chamber subjected to gas pressure At least one of the communication paths connecting the switch valve device to Part of the passage Is provided on the rod guide.
[0007]
According to a second aspect of the present invention, in the first aspect of the present invention, a pipe is inserted into the cylinder block, an oil chamber or a gas chamber is formed in the pipe, and a hollow portion between the pipe and the cylinder block is formed as a piston. The rod-side oil chamber is connected to the switching valve device, the piston-side oil chamber is connected to the switching valve device, or the gas chamber is connected to the switching valve device.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
1 is a schematic view showing a ship propulsion device, FIG. 2 is a cross-sectional view showing a gas cylinder device according to a first embodiment, FIG. 3 is a side view of FIG. 2, FIG. 4 is a plan view of FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5, FIG. 7 is a sectional view taken along the line VII-VII in FIG. 5, and FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. 9 is a cross-sectional view taken along the line IX-IX of FIG. 5, FIG. 10 is a cross-sectional view showing the main part of the gas cylinder device of the second embodiment, and FIG. 11 is a side view of FIG. 12 shows a valve guide and a pin of a rotating body, (A) is a plan view, and (B) is a front view.
[0010]
First Embodiment (FIGS. 1 to 9)
As shown in FIG. 1, a ship propulsion device (outboard motor, but may be an inboard / outboard motor) 10 has a clamp bracket 12 fixed to a hull 11 and a clamp bracket 12 via a tilt shaft 13. swivel The bracket 14 is pivotally attached so as to be tiltable about a substantially horizontal axis, swivel A propulsion unit 15 (propulsion unit) is pivotally attached to the bracket 14 via a ship rudder shaft (not shown) so as to be rotatable about a substantially vertical axis. The propulsion unit 15 drives the propeller 17 by the engine unit 16.
[0011]
The ship propulsion device 10 has a gas cylinder device 20 interposed between the clamp bracket 12 and the swivel bracket 14. The gas cylinder device 20 includes a cylinder block 21 cast from an aluminum alloy or the like, and a piston rod 22. The piston rod 22 is liquid-tightly inserted into the cylinder block 21 via an oil seal 23C and an O-ring 23D from a rod guide 23 screwed onto the cylinder block 21 via O-rings 23A and 23B. An attachment portion 21A provided at the lower end portion of the cylinder block 21 is provided with an attachment portion 22A provided at the upper end portion of the clamp bracket 12 and the piston rod 22. swivel It is connected to the bracket 14.
[0012]
The gas cylinder device 20 fixes a piston 24 (O-ring 24A) to an insertion end of a piston rod 22 inserted into a cylinder block 21, and a piston rod side oil chamber 25 that houses the piston rod 22 inside the cylinder block 21; A piston-side oil chamber 26 that does not accommodate the piston rod 22 is provided, and hydraulic oil is accommodated in the piston rod-side oil chamber 25 and the piston-side oil chamber 26. The piston-side oil chamber 26 accommodates a free piston 27 (O-ring 27A) that is disposed close to the piston 24. The free piston 27 partitions the piston side oil chamber 26 into an upper piston side oil chamber 26A and a lower piston side oil chamber 26B.
[0013]
The piston 24 is provided with an absorber valve 28 and a return valve 29 in each of two flow paths connecting the piston rod side oil chamber 25 and the piston side oil chamber 26. The absorber valve 28 is opened when the pressure in the piston rod side oil chamber 25 rises abnormally and reaches a predetermined pressure value or more, as in the case of an impact force due to collision with an obstacle. Thus, the oil in the piston rod side oil chamber 25 can be transferred to the upper piston side oil chamber 26A. The return valve 29 receives the impact force due to the collision with the obstacle, and then, when the pressure in the upper piston side oil chamber 26A reaches a predetermined pressure value or higher under the self-weight action of the propulsion unit 15 tilted up. The valve can be opened.
[0014]
In the gas cylinder device 20, a gas chamber 31 that can communicate with the piston rod side oil chamber 25 and the piston side oil chamber 26 is integrally formed on the side of the upper side of the cylinder block 21. The gas chamber 31 includes a lower oil chamber 33 incidentally via a free piston 32 (O-ring 32A).
[0015]
The gas cylinder device 20 is provided with a switching valve device 50 in the cylinder block 21 that enables the piston rod side oil chamber 25 to switch the communication state between the piston side oil chamber 26 and the gas chamber 31. The switching valve device 50 is provided on the opposite side of the gas chamber 31 above the cylinder block 21.
[0016]
The gas cylinder device 20 includes a communication path 34 for connecting the piston rod side oil chamber 25 to the switching valve device 50, a communication path 35 for connecting the piston side oil chamber 26 to the switching valve device 50, and a switching valve device for the gas chamber 31. A communication path 36 that communicates with 50 is provided. The switching valve device 50 is switched and set to either an off mode in which all the communication paths 34, 35, 36 are cut off from each other or an on mode in which all the communication paths 34, 35, 36 are connected to each other. When the switching valve device 50 is set to the off mode, the gas cylinder device 20 disconnects the piston rod side oil chamber 25, the piston side oil chamber 26, and the gas chamber 31 (lower oil chamber 33) and The expansion and contraction is stopped, and the propulsion unit 15 is brought into a tilt lock state at an arbitrary position without being affected by the gas chamber 31. When the switching valve device 50 is set to the on mode, the gas cylinder device 20 connects the piston rod side oil chamber 25, the piston side oil chamber 26, and the gas chamber 31 (lower oil chamber 33) to each other to expand and contract the piston rod 22. The propulsion unit 15 can be manually tilted up / down. In the on mode of the switching valve device 50, the gas pressure in the gas chamber 31 exerts an assisting force on the piston rod 22 to reduce the manual tilt up / tilt down operation force. Further, in the on mode of the switching valve device 50, the oil corresponding to the volume of the piston rod 22 that retreats from the piston rod side oil chamber 25 and the piston side oil chamber 26 during the tilt-up stroke of the gas cylinder device 20 is below the gas chamber 31. The piston-side oil chamber 26 is replenished from the oil chamber 33, and the piston rod-side oil chamber 25 and the piston-side oil chamber 26 enter the piston-side oil chamber 26 during the tilt-down stroke of the gas cylinder device 20, and the piston-side oil is the volume of the piston-side oil. The chamber 26 is withdrawn to the lower oil chamber 33.
[0017]
The gas cylinder device 20 includes a temperature compensation relief valve 39 in a valve insertion portion 38 provided in an intermediate portion of a communication path 37 that connects the piston-side oil chamber 26 and the lower oil chamber 33 of the gas chamber 31. ing. When the hydraulic oil temperature in the piston rod side oil chamber 25 and the piston side oil chamber 26 rises abnormally in the off mode of the switching valve device 50, the oil in the piston side oil chamber 26 is released from the relief valve 39 to each oil chamber 33. .
[0018]
The gas cylinder device 20 has (A) a routing structure of communication paths 34 to 37 provided in the cylinder block 21 and (B) a structure of the switching valve device 50 as follows.
[0019]
(A) Connection structure of the communication paths 34 to 37 in the cylinder block 21 (FIGS. 2 to 4 and 6)
[0020]
The communication path 34 is a horizontal hole provided in the cylinder block 21 and opens at the upper end of the piston rod side oil chamber 25. The communication path 34 is a short hole, and is drilled into the cylinder block 21 after casting.
[0021]
The communication path 35 includes a horizontal hole 35A, a vertical hole 35B, and a horizontal hole 35C provided in the cylinder block 21. A lateral hole 35A that opens to the lower end of the piston-side oil chamber 26 and a lateral hole 35C that opens to the switching valve device 50 are short holes, and are formed by drilling into the cylinder block 21 after casting. The lateral hole 35A is sealed with a plug 35D. The vertical hole 35 </ b> B is an elongated hole that connects the horizontal hole 35 </ b> A and the horizontal hole 35 </ b> C, and is formed after the cylinder block 21 is cast.
[0022]
The communication path 36 is formed using the cylinder block 21 and the rod guide 23. At this time, the gas cylinder device 20 connects the upper end inner peripheral portion of the pipe 43 made of a drawing pipe to the lower end small diameter portion 42 of the cap 41 which is screwed to the cylinder block 21 via the O ring 41A. The pipe 43 is inserted into the cylinder block 21 and the gas chamber 31, the free piston 32, and the lower oil chamber 33 are provided inside the pipe 43. 44 is a gas sealing part.
[0023]
The communication path 36 includes an annular hole 36A provided in an annular hollow portion between the cylinder block 21 and the pipe 43, an oblique hole 36B provided in the cylinder block 21, an annular groove 36C provided in the rod guide 23, and the cylinder block 21. It consists of a provided lateral hole 36D. The annular hole 36 </ b> A is a long hole and communicates with the lower oil chamber 33 from the lower end notch portion of the pipe 43. The oblique hole 36B is a short hole that connects the upper end of the annular hole 36A and the annular groove 36C, and is drilled into the cylinder block 21 after casting. The annular groove 36 </ b> C is cut on the outer periphery of the rod guide 23. The lateral hole 36D is a short hole that connects the annular groove 36C to the switching valve device 50, and is drilled into the cylinder block 21 after casting.
[0024]
The communication path 37 includes a horizontal hole 37 </ b> A and a vertical hole 37 </ b> B provided in the cylinder block 21. The lateral hole 37A is a short hole that connects the piston-side oil chamber 26 to the valve insertion portion 38, and is drilled into the cylinder block 21 after casting. The valve insertion portion 38 is sealed with a plug 38A. The vertical hole 37B is a short hole that connects the valve insertion portion 38 and the lower oil chamber 33, and may be formed when the cylinder block 21 is cast, or may be drilled into the cylinder block 21 after casting.
[0025]
Therefore, in the gas cylinder device 20, the long hole formed when the cylinder block 21 is cast is only the vertical hole 35 </ b> B of the communication path 35. Further, since the gas chamber 31 is formed by the pipe 43 of the extraction pipe, the free piston 32 can be accommodated without processing the pipe 43.
[0026]
According to this embodiment, there are the following operations.
(1) An intermediate portion of the communication path 36 that connects the gas chamber 31 to the switching valve device 50 is provided in the rod guide 23 as an annular groove 36. Thereby, the routing of the communication path 36 from the gas chamber 31 to the switching valve device 50 can be simplified, and the number of processing steps of the cylinder block 21 can be reduced.
[0027]
(2) The gas chamber 31 is formed in the pipe 43 inserted into the cylinder block 21, and the annular hollow portion between the pipe 43 and the cylinder block 21 is used as the communication path 36 (annular hole 36 </ b> A). The handling of the communication path 36 to the switching valve device 50 can be simplified, and the number of processing steps of the cylinder block 21 can be reduced.
[0028]
(3) The gas chamber 31 and the switching valve device 50 provided in the cylinder block 21 are provided on one side and the other side of the cylinder block 21, respectively, so that the gas chamber 31 extends along a long range on one side of the cylinder block 21. Can be provided. Thereby, the capacity | capacitance of the gas chamber 31 can be taken large, the change by the temperature change of the assist force which the gas pressure of the gas chamber 31 exerts on the piston rod 22 can be decreased, and the assist force can be stabilized.
[0029]
(B) Structure of switching valve device 50 (FIGS. 5 to 9)
As described above, the switching valve device 50 has a valve case 51 integrally formed on the side opposite to the gas chamber 31 at the upper part of the cylinder block 21, and the valve case 51 is liquidated via an O-ring 52A. A cap 52 is tightly screwed and the internal space of the valve case 51 is used as a communication chamber 53.
[0030]
The switching valve device 50 forms a seat surface 53 </ b> A in which ports A, B, and C of the communication paths 34, 35, and 36 are opened in a communication chamber 53 provided in the valve case 51. The switching valve device 50 is provided in the port A of the communication path 34 that connects the piston rod side oil chamber 25 to the communication chamber 53, and opens the poppet valve 54 that opens due to the high pressure of the piston rod side oil chamber 25 and the piston side oil chamber 26. A poppet valve 55 that is provided at port B of the communication path 35 that communicates with the communication chamber 53 and opens due to the high pressure of the piston-side oil chamber 26 and a communication path 36 that communicates the gas chamber 31 (lower oil chamber 33) with the communication chamber 53. A poppet valve 56 provided at the port C and opened by the high pressure of the gas chamber 31 (lower oil chamber 33).
[0031]
The switching valve device 50 accommodates the valve guide 61 in the communication chamber 53 of the valve case 51, and the valve guide 61 is fitted to two parallel pins 62 installed at two positions in the diameter direction of the communication chamber 53. The valve guide 61 can be moved back and forth with respect to the seat surface 53A.
[0032]
In the switching valve device 50, the poppet valves 54 to 56 are provided so as to be linearly movable in three guide holes provided in the valve guide 61. Each of the poppet valves 54 to 56 constitutes a check valve according to the present invention, and a valve body 58 urged by a valve spring 57 backed up by a rotating plate 65 described later collides with the opening edge of the guide hole of the valve guide 61. When aligned, the sealing member 58A provided on the outer end surface of the valve body 58 protrudes from the opening edge of the guide hole, and the protruding sealing member 58A is moved in a state where the valve guide 61 is in the approaching position with respect to the seat surface 53A. It is seated in the corresponding ports A to C of the sealing surface 58A.
[0033]
However, the switching valve device 50 allows the pop-up valves 54 to 56 provided in the valve guide 61 to be simultaneously opened and closed by operating the valve guide 61 to approach / separate the seat surface 53A. By opening all the poppet valves 54 to 56 by the opening operation, the ports A to C of all the communication paths 34 to 36 can be communicated with each other in the communication chamber 53.
[0034]
For this reason, the switching valve device 50 inserts the rotating shaft 63 supported by the valve case 51 into the cap 52 via the oil seal 52B and the O-ring 63A in a liquid-tight manner, and rotates at the outer end of the rotating shaft 63. An operation lever 64 is provided, an inner end portion of the rotating shaft 63 is pivotally attached to a bearing recess provided on the seat surface 53A, and a rotating plate 65 is integrated with a middle portion of the rotating shaft 63 via a spring pin 63B. Further, a spring 66 is provided between the outer peripheral flange of the valve guide 61 and the seat surface 53A to bias the valve guide 61 in the direction of separating the valve guide 61 from the seat surface 53A. A storage recess 68 of the ball 67 is provided at a position in the diameter direction 2 of the end face of the valve guide 61 facing the rotation plate 65, and a ball immersion portion 69 for the ball 67 is provided at a position in the diameter direction 2 of the plane of the rotation plate 65. Recessed.
[0035]
The switching valve device 50 has a click ball 72 backed up by a moderation spring 71 on a part of the end surface of the valve guide 61 facing the rotating plate 65 in the circumferential direction. Closed position corresponding holes 73 </ b> A and open position corresponding holes 73 </ b> B are provided at two positions separated in the circumferential direction of the plane of the rotating plate 65. The rotation lever 64 is rotated until it contacts the closing stopper 51A of the valve case 51 (FIG. 3), and when the closing position corresponding hole 73A of the rotating plate 65 engages the click ball 72 of the valve guide 61, the rotating plate Reference numeral 65 denotes a closing operation position for causing the valve guide 61 to approach the seat surface 53A (the left half of FIG. 8). When the rotation operating lever 64 is rotated until it contacts the opening side stopper 51B of the valve case 51 (FIG. 3), and the opening position corresponding hole 73B of the rotating plate 65 engages with the click ball 72 of the valve guide 61, the rotating plate Reference numeral 65 denotes an opening operation position for separating the valve guide 61 from the seat surface 53A (the right half portion in FIG. 8).
[0036]
Thereby, the switching valve device 50 rotates the rotating plate 65 integral with the rotating shaft 63 by the rotation operating lever 64, and (a) when the rotating plate 65 is closed and positioned at the operating position, the plane of the rotating plate 65 is moved to the valve guide. By pressing the ball 67 in the storage recess 68 of the 61, the valve guide 61 is brought into the state of approaching the seat surface 53A against the spring force of the spring 66, and the poppet valves 54 to 56 are made to correspond to the seat surface 53A. The ports A to C are seated to close the ports A to C, and all the communication paths 34 to 36 are blocked (the left half of FIGS. 6 to 9).
[0037]
On the other hand, the switching valve device 50 rotates the rotating plate 65 integral with the rotating shaft 63 by the rotation operating lever 64, and (b) when the rotating plate 65 is opened and positioned at the operating position, the ball insertion portion 69 of the rotating plate 65 is moved. By accepting the ball 67 in the storage recess 68 of the valve guide 61, the valve guide 61 is separated from the seat surface 53A by the spring force of the spring 66, and each poppet valve 54-56 is connected to the corresponding port of the seat surface 53A. Away from A to C, ports A to C are conducted to the communication chamber 53, and all the communication paths 34 to 36 are connected to each other (right half of FIGS. 6 to 9).
[0038]
When any one of the piston rod-side oil chamber 25, the piston-side oil chamber 26, and the gas chamber 31 is at a high pressure when the switching valve device 50 is in the closing operation position (a) described above, the corresponding communication paths 34- One of the poppet valves 54 to 56 seated at the 36 ports A to C opens to apply high pressure oil to the communication chamber 53. This high-pressure oil exerts a non-return action on the other two poppet valves 54 to 56 inside the communication chamber 53 and keeps the two poppet valves 54 to 56 closed. Thereby, the interruption | blocking state of the poppet valves 54-56 can be maintained stably.
[0039]
The rotating plate 65 is coupled to the rotating shaft 63 by the spring pin 63B as described above to prevent the rotating shaft 63 from coming off and serves as a lid for the poppet valves 54 to 56 accommodated in the guide holes of the valve guide 61. A valve spring 57 provided in each of the poppet valves 54 to 56 improves the responsiveness of the valve body 58. When the valve springs 57 are provided on the poppet valves 54 to 56, a thrust washer is interposed between the rotary plate 65 and the valve spring 57 to prevent frictional displacement between the rotary plate 65 and the valve spring 57, thereby generating wear powder. Can be prevented.
[0040]
According to this embodiment, there are the following operations.
A poppet valve 54 to 56 is provided on the valve guide 61, a spring 66 and a valve guide 61 are inserted into the valve case 51, and the rotating plate 65 is integrated with the ball 67 inserted into the storage recess 68 on the upper surface of the valve guide 61. The switching valve device 50 can be assembled by inserting the rotating shaft 63 from the valve guide 61 into the bearing recess of the seat surface 53A, screwing the cap 52 onto the valve case 51 and closing the lid. Therefore, the switching valve device 50 of the gas cylinder device 20 can be made compact and compact, and the assemblability can be improved.
[0041]
Second Embodiment (FIGS. 10 to 12)
The second embodiment differs from the first embodiment in (A) a connection structure of the communication path 34 and the communication path 35 provided in the cylinder block 21, and (B) a structure of the switching valve device 50.
[0042]
(A) The routing structure of the communication path 34 and the communication path 35 in the cylinder block 21 (FIG. 10)
[0043]
In the gas cylinder device 20 of the second embodiment, the inner peripheral portion of the upper end of a pipe 82 made of a drawing tube is liquid-tightly fitted to the lower end small diameter portion 81 of the rod guide 23 via an O-ring 23E. The aforementioned piston 24, free piston 27, piston rod side oil chamber 25, and piston side oil chamber 26 are provided inside the pipe 82 by being inserted into the cylinder block 21.
[0044]
The communication path 35 includes an annular hole 83 provided in an annular hollow portion between the cylinder block 21 and the pipe 82, and a lateral hole 84 provided in the cylinder block 21. The annular hole 83 is a long hole and communicates with the piston-side oil chamber 26 from the lower end notch portion of the pipe 82. The lateral hole 84 is a short hole that connects the upper end of the annular hole 83 and the switching valve device 50, and is drilled into the cylinder block 21 after casting.
[0045]
The communication path 34 includes a vertical groove 85, a horizontal hole 86, an annular groove 87 provided in the rod guide 23, and a horizontal hole 88 provided in the cylinder block 21. The vertical groove 85 is implanted in the inner surface of the hole through which the piston rod 22 of the rod guide 23 is inserted, and opens to the piston rod side oil chamber 25. The annular groove 87 is cut on the outer periphery of the rod guide 23. The horizontal hole 86 is drilled in the rod guide 23 so that the vertical groove 85 and the annular groove 87 communicate with each other. The lateral hole 88 is a short hole that connects the annular groove 87 to the switching valve device 50, and is drilled into the cylinder block 21 after casting. In the outer periphery of the rod guide 23, the O-ring 23B and the O-ring 23F are provided above and below the annular groove 87.
[0046]
Therefore, in the gas cylinder device 20 of the second embodiment, the communication path 35 that communicates the piston-side oil chamber 26 with the switching valve device 50 is provided with an annular hole formed by an annular hollow portion between the cylinder block 21 and the pipe 82. The long hole was not formed when the cylinder block 21 was cast. Further, since the piston rod side oil chamber 25 and the piston side oil chamber 26 are formed by the pipe 82 of the drawing pipe, the piston 24 and the free piston 27 can be accommodated without processing the pipe 82. Processing of the cylinder block 21 can be reduced.
[0047]
According to this embodiment, in addition to the operation in the first embodiment, the following operation is provided.
(1) The rod guide 23 is provided with an intermediate portion (vertical groove 85, horizontal hole 86, annular groove 87) of the communication path 34 that connects the piston rod side oil chamber 25 to the switching valve device 50. Thereby, the routing of the communication path 34 from the piston rod side oil chamber 25 to the switching valve device 50 can be simplified, and the number of processing steps of the cylinder block 21 can be reduced.
[0048]
(2) The piston rod side oil chamber 25 and the piston side oil chamber 26 are formed in the pipe 82 inserted into the cylinder block 21, and the annular hollow portion between the pipe 82 and the cylinder block 21 is connected to the communication path 35 (annular hole 83). By doing so, the handling of the communication path 35 from the piston-side oil chamber 26 to the switching valve device 50 can be simplified, and the number of processing steps of the cylinder block 21 can be reduced.
[0049]
(B) Structure of switching valve device 50 (FIGS. 10 to 12)
The switching valve device 50 of the second embodiment is different from the switching valve device 50 of the first embodiment in that the spring 66 and the ball 67 are removed and the contact / separation mechanism of the valve guide 61 by the rotating shaft 63 is changed. . In the switching valve device 50, a spring 91 is provided between the outer peripheral flange of the valve guide 61 and the rotary plate 65 to urge the valve guide 61 in a direction to approach the seat surface 53 </ b> A. A pin 92 (a projecting body) that contacts the end surface of the valve guide 61 is provided in an intermediate portion of the rotating shaft 63 that passes through the valve guide 61, and intersects the central axis of the rotating shaft 63 at the end surface of the valve guide 61. A concave pin entry portion 93 extending in the direction was provided. The pin 92 is provided on the end surface of the valve guide 61 at a central portion that does not interfere with the guide hole provided with the poppet valves 54 to 56 and the parallel pin 62.
[0050]
As a result, the switching valve device 50 rotates the rotating plate 65 and the pin 92 integral with the rotating shaft 63 by the rotation operating lever 64, and (a) the click position ball 73A of the valve guide 61 is moved to the closing position corresponding hole 73A of the rotating plate 65. 72, when the rotating plate 65 and the pin 92 are positioned at the closed operation position, the pin insertion portion 93 of the valve guide 61 falls into the pin 92, and the valve guide 61 is moved to the seat surface 53A by the spring force of the spring 91. Each of the poppet valves 54 to 56 is seated on the corresponding port A to C of the seat surface 53A to close the ports A to C, and all the communication paths 34 to 36 are blocked (the left half of FIG. 10). ).
[0051]
On the other hand, the switching valve device 50 rotates the rotation plate 65 and the pin 92 integral with the rotation shaft 63 by the rotation operation lever 64, and (b) the opening ball corresponding to the opening position 73 B of the rotation plate 65 is click ball 72 of the valve guide 61. When the rotating plate 65 and the pin 92 are positioned at the opening operation position by engaging with each other, the pin 92 lifts the plane of the valve guide 61, and the valve guide 61 is separated from the seat surface 53 </ b> A against the spring force of the spring 91. The poppet valves 54 to 56 are separated from the corresponding ports A to C on the seat surface 53A, and the ports A to C are connected to the communication chamber 53, so that all the communication paths 34 to 36 are connected to each other ( (The right half of FIG. 10).
[0052]
According to this embodiment, there are the following operations.
The poppet valves 54 to 56 are inserted into the valve guide 61, the rotary shaft 65, the valve guide 61, and the pin 92 are assembled into the valve case 51, and the spring 91 is inserted onto the outer peripheral flange of the valve guide 61. The switching valve device 50 can be assembled by screwing the cap 52 onto the valve case 51 and closing it. Therefore, the switching valve device 50 of the gas cylinder device 20 can be made compact and compact, and the assemblability can be improved.
[0053]
Further, as a mechanism for contacting and separating the valve guide 61 by the rotating shaft 63, it is sufficient if only one pin 92 is provided on the rotating shaft 63 and only one pin recessed portion 93 is formed on the end surface of the valve guide 61. Easy.
[0054]
The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. Is included in the present invention. For example, the present invention provides at least a communication path that communicates a piston rod side oil chamber to a switching valve device, a communication path that communicates a piston side oil chamber to a switching valve device, and a communication path that communicates a gas chamber to a switching valve device. One intermediate part may be provided on the rod guide. Further, the switch valve device and the gas chamber may be arranged in series and then integrally formed with the cylinder block.
[0055]
Further, the present invention inserts a pipe into a cylinder block, forms an oil chamber or gas chamber in the pipe, and communicates a hollow portion between the pipe and the cylinder block and a piston rod side oil chamber to a switching valve device. The communication path for communicating the passage and the piston side oil chamber to the switching valve device or the communication path for communicating the gas chamber to the switching valve device may be used.
[0056]
【The invention's effect】
As described above, according to the present invention, in the marine gas cylinder apparatus, it is possible to simplify the handling of the communication path provided in the cylinder block and reduce the number of processing steps of the cylinder block.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a ship propulsion device.
FIG. 2 is a cross-sectional view showing the gas cylinder device according to the first embodiment.
FIG. 3 is a side view of FIG. 2;
4 is a plan view of FIG. 2. FIG.
5 is an arrow view along the line VV in FIG. 2. FIG.
6 is a cross-sectional view taken along line VI-VI in FIG.
7 is a cross-sectional view taken along line VII-VII in FIG.
FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG.
9 is a cross-sectional view taken along line IX-IX in FIG.
FIG. 10 is a cross-sectional view showing a main part of a gas cylinder device according to a second embodiment.
FIG. 11 is a side view of FIG. 10;
12A and 12B show a valve guide and a pin of a rotating body, in which FIG. 12A is a plan view and FIG. 12B is a front view.
[Explanation of symbols]
10 Ship propulsion device
11 Hull
15 Propulsion unit (propulsion unit)
20 Gas cylinder device
21 Cylinder block
22 Piston rod
23 Rod guide
24 piston
25 Piston rod side oil chamber
26 Piston side oil chamber
31 Gas chamber
34-36 connecting road
43 Pipe
50 Switching valve device
82 pipe

Claims (2)

The cylinder block is connected to one of the hull and the propulsion unit, the piston rod inserted into the cylinder block from the rod guide provided on the cylinder block is connected to the other of the hull and the propulsion unit,
A piston rod side oil chamber on the piston rod housing side and a piston side oil chamber on the piston rod non-housing side are provided in the cylinder block.
An oil chamber that receives gas pressure, which can be connected to the piston rod side oil chamber and the piston side oil chamber, is formed integrally with the cylinder block,
In a gas cylinder device for a ship, in which a switching valve device is provided in a cylinder block to enable switching between a piston rod side oil chamber, a piston side oil chamber, and an oil chamber that receives gas pressure .
An oil chamber that receives gas pressure is provided on the side of one side of the piston block of the cylinder block, and a switching valve device is provided on the opposite side of the oil chamber that receives gas pressure across the piston rod of the cylinder block.
At least one of a communication path for communicating the piston rod side oil chamber to the switching valve device, a communication path for communicating the piston side oil chamber to the switching valve device, and a communication path for communicating the oil chamber receiving the gas pressure to the switching valve device A marine gas cylinder device characterized in that a part of a passage is provided in a rod guide.   Piping is inserted into the cylinder block, an oil chamber or a gas chamber is formed in the pipe, a hollow portion between the pipe and the cylinder block, a piston rod side oil chamber is connected to a switching valve device, a piston The marine gas cylinder device according to claim 1, wherein the side oil chamber is a communication path that communicates with the switching valve device or the gas chamber is a communication path that communicates with the switching valve device.

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