JPS63103795A - Tilt device for ship propulsion machine - Google Patents

Abstract

PURPOSE:To simplify while solidify the structure of a tilt device and increase the reliability on the strength of said tilt device which enables the adjustment of a tilt-down lock position by providing a cam groove for supporting a lock pin on a swivel bracket. CONSTITUTION:As a swivel bracket 15 is moved upward, a lock pin 30 is engaged with adjacent upper stage engaging groove parts 28 in order being guided by a cam groove 31, adjusting a tilt-down lock position gradually to the upper side. In this case, since the lock pin 30 is directly supported by the cam groove 31 provided on the swivel bracket 15, not via an operating lever, etc., the structure of a tilt device can be made simple and solid. Also, since the engagement between the lock pin 30 and a stopper member 34 is removed by means of an engagement adjusting member 35 after the lock pin 30 is moved to return downward after passing through the top stage engaging groove part 28, the swivel bracket 15 is automatically returned down side and the lock pin 30 is newly engaged with the engaging groove parts 28.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a tilt device for a marine vessel propulsion device.

[Prior Art] Conventionally, there is a tilt device for a ship propulsion device as described in Japanese Utility Model Publication No. 51-40233. This tilt device is
A clamp bracket that is fixed to the hull, a swivel bracket that is rotatably attached to the clamp bracket via a tilt axis in the tilt-up or tilt-down direction and supports the propulsion unit, and a circular arc centered on the tilt axis of the clamp bracket. a plurality of engagement grooves provided at appropriate intervals along the swivel bracket, a lock pin movably supported by the swivel bracket and lockable in each engagement groove in turn, and a lock pin between the swivel bracket and the lock pin. - It is configured to include a resilient member that is interposed and resiliently pushes the lock pin toward the engagement position with each engagement groove. Here, the lock pin in this tilt device is arranged at the swing end of the operating lever that is rotatably supported by the swivel bracket.

However, in the above tilt device, when the swivel bracket is moved in the upward direction, the lock pin moves along the groove surface of each engagement groove and sequentially engages with the adjacent upper engagement groove. The tilt down lock position can be adjusted sequentially to the up side. In addition, by rotating the operating lever and keeping the lock pin in the non-engaging position with each engagement groove, the swivel bracket can be moved back to the down side.

[Problems to be Solved by the Invention] However, in the above conventional tilt device, since the lock pin is disposed on the operating lever, the forward thrust force acts on the operating lever via the lock pin. There is a risk that the support shaft hole of the operating lever may rattle or the operating lever may buckle, and there are concerns about the reliability of the tilting device's strength.

SUMMARY OF THE INVENTION An object of the present invention is to improve the strength and reliability of a tilt device that allows adjustment of the tilt down lock position.

[Means for Solving the Problems] The present invention includes a clamp bracket that is fixed to the hull, and a clamp bracket that is rotatably attached to the clamp bracket via a tilt axis in a tilt-up or tilt-down direction to support a propulsion unit. A swivel bracket, a plurality of engagement grooves provided at appropriate intervals along an arc centered on the tilt axis of the clamp bracket, movably supported by the swivel bracket, and lockable in sequence to each engagement groove. In a tilting device for a marine propulsion device, the device includes a lock pin, and a springing member that is interposed between a swivel bracket and a lock pin and springs the lock pin toward the engagement position with each engagement groove. , the lock pin is supported by a long cam groove provided on the swivel bracket, and the cam groove is configured to: ■ When the swivel bracket moves in the upward direction, the lock pin inside the engagement groove is pushed into the groove surface of the engagement groove. (1) When the swivel bracket moves in the down direction, the lock pin inside the engagement groove is guided along the groove surface of the engagement groove. It is designed to guide the user in the direction of pressing inward.

[Function] According to the present invention, when the swivel bracket moves in the upward direction, the lock pin is guided by the cam groove and sequentially engages with the adjacent upper engagement groove, and the tilt down lock position is sequentially moved to the upward side. It can be adjusted to Here, since the lock pin is directly supported by the cam groove provided in the swivel bracket without using an operating lever or the like, the structure of the tilt device can be made simple and robust. That is, it is possible to improve the reliability of the strength of the tilt device that allows adjustment of the tilt down lock position.

In addition, a stopper member is provided to hold the lock pin in a disengaged position with each engagement groove after the lock pin has passed through the uppermost engagement groove in the upward direction. If an engagement adjuster is provided that releases the engagement between the lock pin and the stopper member after passing through the upper engagement groove and moving back in the down direction, the swivel bracket will automatically return to the down direction. Thus, a new state of engagement between the lock pin and each engagement groove can be obtained.

Furthermore, if the engagement adjuster is set to be switched to each position corresponding to each engagement groove, the lock pin that is disengaged from the stopper member corresponds to the set position of the engagement adjuster. New locks can be sequentially applied to the engagement groove and the upper engagement groove, increasing the number of engagement stages of the lock pin.
In other words, the number of steps of the tilt down lock position can be adjusted.

[Example] Fig. 1 is a front view showing one embodiment of the present invention, and Fig. 2 is a front view showing an embodiment of the present invention.
Figure 3 is a sectional view taken along line ■-■ in Figure 1. Figures 4 (A) to (C) are cross-sectional views taken along line ■-I in Figure 1.
5 (A) and CB) are schematic diagrams showing the lock pin coming out of the engagement groove, and FIG. 6 is a schematic diagram showing the lock pin coming out of the engagement groove. FIG. 3 is a schematic diagram showing a state of being pressed.

Outboard Il! 10 includes a clamp bracket 12 fixed to the hull 11 and a tilt axis 13 attached to the clamp bracket 12.
The propulsion unit 14 is provided with a swivel bracket 15 which is rotatably mounted in the tilt-up or tilt-down direction via the swivel bracket 15 and supports the propulsion unit 14. The propulsion unit 14 is equipped with an engine (not shown), and the output of the engine is transmitted to the propeller 19 via a drive shaft 16, a forward/reverse switching device 17, and a propeller shaft 18.

A shift lever 20 is provided on the upper side of the propulsion unit 14 and is swingable between three positions: a forward position, a neutral position, and a reverse position. The upper end of a shift rod 22 is pin-coupled to the shift lever 20 via a shift arm 21 . A shift cam 23 is fixed to the lower end of the shift rod 22. The shift cam 23 has a forward cam surface, a neutral cam surface, and a reverse cam surface corresponding to the swinging position of the shift lever 20, and is integrated with the propeller shaft 18 in the rotational direction, and has a dog clutch 24 that constitutes the forward/reverse switching device 17. can be moved to three positions: a forward position, a neutral position, and a reverse position. In its forward position, the dog clutch 24 selectively engages with the forward gear 26 that is always engaged with the drive gear 25 to rotate the propeller 19 forward, and in its backward position, it is always engaged with the drive gear 25. The propeller 19 is selectively meshed with the reverse gear 27 provided therein, thereby enabling the propeller 19 to rotate backward.

A plurality of engagement grooves 28 are provided at appropriately spaced positions along an arc centered on the top and bottom shafts 13 of the clamp bracket 12 . On the other hand, on both side walls of the support member 29 integrated with the swivel bracket 15.

Lock pin 3 that can be sequentially locked into each engagement groove 28
A long cam groove 31 that supports 0 is provided. A spring 33 is interposed between the connecting portion 32 of the swivel bracket 15 and the lock pin 30 to urge the lock pin 3o toward the engagement position with each engagement groove 28. Here, the cam is $11,131.

■As shown in FIGS. 5(A) and 5(B), when the swivel bracket 15 is moved in the upward direction, the lock pin 3o inside the engagement groove 28 is moved along the groove surface of the engagement groove 28. The lock pin 30 inside the engagement groove 28 is guided in the direction of disengaging from the engagement groove 28, and when the swivel bracket 15 is moved in the downward direction as shown in FIG. It is set so as to be guided along the groove surface of 28 in the direction of pressing into the engaging groove portion 28 . Note that before the lock pin 30 passes through the uppermost engagement groove 28 in the upward direction, the low pin 30 reciprocates from the lower end of the cam groove 31 to the middle part,
It does not reach the upper end of the cam groove 31.

Further, the tilt device includes a stopper member 34 that holds the lock bin 30 in a non-engaging position with each engagement groove 28 after the lock bin 30 has passed through the uppermost engagement groove 28 in the upward direction. and an engagement adjuster 35 that releases the engagement between the lock bin 30 and the stopper member 34 after the lock bin 30 passes through the uppermost engagement groove 28 and moves back in the downward direction. .

Here, the stopper member 34 is shown in FIGS. 3 and 4 (A) to
As shown in (C), the swivel bracket 15 is supported via a support shaft 37 at a position close to the cam groove 31 of the swivel bracket 15 in a state where it is resiliently biased toward the cam groove 31 by a spring 36. ing. The stopper member 34 is
Under conditions other than when the lock bin 30 passes through the uppermost engagement groove 28 in the upward direction, the lock bin 30 is guided by the cam groove 31 and moves along the groove surface of the engagement groove 28. In addition, the stopper member 34 is in contact with the cam 1 in the state after the lock pin 30 has passed through the uppermost engagement groove 28 in the upward direction.
431 and moves along the guide surface 38 that is connected to the rear groove surface of the uppermost engagement groove section 28, the lock bin 30 is brought into contact with its side surface 34A.
The stopper portion 34B is engaged (FIG. 4(B)), and the lock bin 30 is held in the disengaged position with each engagement groove 28, allowing the swivel bracket 15 to return in the down direction (FIG. 4(B)). 4(C)), 101 is a support portion that supports the stopper member 34 in the engaged state with the lock bin 3o. The guide surface 38 provided on the clamp bracket 12 has a height h higher than the level of one groove of the groove surface of each engagement groove 28.
(FIG. 5(A)). Therefore, the lock bin 30 is extended upward by the uppermost engagement groove 2 in the upward direction.
8, the lock pin 30 moves upward along the guide surface 38 as described above, and the cam groove 3
It reaches the upper end of 1.

Furthermore, the engagement adjuster 35 can be switched to a position corresponding to each engagement groove 28 on a circular arc along all the engagement grooves 28 of the clamp bracket 12 . That is, as shown in FIG. 3, the engagement adjuster 35 moves the bottle 3 by pressing the knob 35A against the spring body 39.
5B to the clamp bracket 1 corresponding to each engagement groove 28.
2 is removed from the locking recess 40 provided in the locking groove 28, the arc-shaped elongated hole 41 along all the engaging grooves 28 is moved, and the locking groove provided corresponding to the other adjacent engaging groove 28 is moved. The bins 35B can be sequentially switched and set in the locking recess 40. The engagement adjuster 35 abuts the row 2 pin 30 against the flat abutment portion 34C of the stopper member 34 that is engaged with the stopper portion 34B thereof, and applies rotational force in the direction of disengagement with the lock pin 30. The lock bin 30 is disengaged from the stopper part 34B, and the lock bin 30 disengaged from the stopper part 34B is dropped into the engagement groove 28 corresponding to the set position of the engagement adjuster 35. can be engaged. This results in
The lock bin 3o can be locked in the engagement groove 28 located corresponding to the engagement adjuster 35 and in the engagement groove 28 in the upper stage.

Furthermore, a reverse lock lever 43 that rotates via a support shaft 42 is provided at a position facing the lock bin 30 on the lower end side of the swivel bracket 15 . The reverse lock lever 43 is coupled to the shift rod 22 via an interlocking rod 44. That is, the reverse lock lever 43 is set to the position shown in FIG. 2 when traveling backward, engages the claw portion 43A with the lock bin 3o, and reverse locks the swivel bracket 14 against reverse thrust; Sometimes, it moves counterclockwise from the state shown in FIG. 2 to release the engagement between the claw portion 43A and the lock bin 30.

Further, the clamp bracket 12 has a curved guide portion 4.
5 are recessed, and on the front inner surface of the clamp bracket 12, a shallow water engagement step 46, an intermediate engagement step 46A, and a tilt-up engagement step 4 are provided at appropriate intervals along the guide portion 45.
7 is provided. Furthermore, an engagement arm 49 is rotatably supported by the swivel bracket 15 . The engagement arm 49 has its distal end engagement portion 50 connected to each of the engagement step portions 46 .
46A and 47.

An operating lever 51 connected to the engagement arm 49 is disposed on the upper front surface of the swivel bracket 15, that is, on the tilt shaft 13. That is, the operating lever 51 is
The connecting portion 52A of the swinging arm 52 is connected to the swinging arm 52 which is swingably supported by the swinging arm 52 via the connecting rod 53.
A spring 5 is attached to each of the connecting portion 49A of the engaging arm 49.
Each end of 4 is connected.

Here, the engagement arm 49 is attached to the engagement steps 46, 46A, 47.
In the state where the disengagement mode is set with The tip engaging portion 50 is separated from the engaging step portions 46, 46A, 47 by spring force to a non-engaging position.

On the other hand, when the engagement arm 49 is set in the engagement mode with the engagement steps 46, 46A, 47, the connecting line connecting both ends of the spring 54 is set on the engagement step side of the support shaft 48. Ru. Therefore, under this condition, when the propulsion unit 14 is tilted upward from the tilt-down position, the engagement arm 49
The tip engaging portion 50 moves upward along the front inner surface of the guide portion 45 while being suppressed by the spring force, and in the process of movement, the shallow water engaging step portion 46, the intermediate engaging step portion 46A, and the tilt It engages with the engagement step portion 47 for up. When the distal end engagement portion 50 of the engagement arm 49 engages with the shallow water engagement step portion 46, a shallow water lock is established, and when the distal end engagement portion 50 engages with the tilt up engagement step portion 47, a tilt up lock is established. becomes.

Next, the operation of the above embodiment will be explained.

According to the above embodiment, when the swivel bracket 15 moves in the upward direction, the lock pin 30 is guided by the cam groove 31 and sequentially engages with the adjacent upper engaging groove part 28,
The tilt down lock position can be sequentially adjusted to the up side. Here, since the lock bin 30 is directly supported by the cam groove 31 provided in the swivel bracket 15 without using an operating lever or the like, the structure of the tilt device can be made simple and robust. That is, it is possible to improve the reliability of the strength of the tilt device that allows adjustment of the tilt down lock position.

Also, a stopper member 34 that holds the lock bin 30 in a non-engaging position with each engagement groove 28 after the lock bin 30 has passed through the uppermost engagement groove 28 in the upward direction.
This is because an engagement adjuster 35 is provided which releases the engagement between the lock bin 30 and the stopper member 34 after the bin 30 passes through the uppermost engagement groove 28 and moves back in the downward direction. , the swivel bracket 15 can be automatically returned to the down side to obtain a new state of engagement between the lock bin 30 and each of the engagement grooves 28.

Further, since the engagement adjuster 35 is switched and set at each position corresponding to each engagement groove 28, the stopper member 34
The lock bin 30 disengaged from the engagement adjuster 35
The engagement groove portion 28 corresponds to the set position. Further, new locks can be sequentially performed in the upper engagement groove portions 28, and the number of engagement stages of the lock bin 3°, that is, the set number of stages of the tilt down lock position can be adjusted.

[Effects of the Invention] As described above, according to the present invention, when the swivel bracket moves in the upward direction, the lock bin is guided by the cam groove and sequentially engages with the adjacent upper engagement groove, thereby tilting down. Lock position 1'! It can be adjusted to the 4th up side. Here, since the lock bin is directly supported by the cam groove provided in the swivel bracket without using an operating lever or the like, the structure of the tilt device can be made simple and robust. That is, it is possible to improve the reliability of the strength of the tilt device that allows adjustment of the tilt down lock position.

[Brief explanation of the drawing]

FIG. 1 is a front view showing one embodiment of the present invention, and FIG. 2 is a front view showing one embodiment of the present invention.
A cross-sectional view taken along the line II-II in the figure, Figure 3 is the ■■ of Figure 1.
4 (A) to (C) are sectional views showing different operating states of the portion along line IV-IV in Figure 1. Figures 5 (A) and (B) are FIG. 6 is a schematic diagram showing a state in which the lock bin is released from the engagement groove, and FIG. 6 is a schematic diagram showing a state in which the lock bin is pressed against the engagement groove. DESCRIPTION OF SYMBOLS 10... Outboard motor, 11... Hull, 12... Clamp bracket, 13... Tilt shaft, 14... Propulsion unit. 15... Swivel bracket, 28... Engagement groove part,
30... Lock bin, 31... Cam groove, 33...
Spring (resilient member), 34...stopper member, 34A.
... Side part, 34B... Stopper part, 35... Engagement adjuster, 38... Guide surface. Agent Patent Attorney Osamu Shiokawa 1st Figure 2■ 4th (B) Tei 4 (C) 5th (A) Figure 6

Claims (4)

[Claims] (1) A clamp bracket fixed to the hull, a swivel bracket that is attached to the clamp bracket so as to be rotatable in the tilt-up or tilt-down direction via a tilt axis, and supports the propulsion unit, and a swivel bracket that supports the propulsion unit, centered around the tilt axis of the clamp bracket. a plurality of engagement grooves provided at appropriate intervals along a circular arc; a lock pin movably supported by the swivel bracket and lockable in each engagement groove in turn; and the swivel bracket and the lock pin. In a tilting device for a marine propulsion device, the lock pin has a long groove shape provided in a swivel bracket, and a resilient member that is interposed between the spring and the spring and springs the lock pin toward the engagement position with each engagement groove. [1] When the swivel bracket moves in the upward direction, the lock pin inside the engagement groove is disengaged from the engagement groove along the groove surface of the engagement groove. [2] When the swivel bracket moves in the down direction, the lock pin inside the engagement groove is guided in the direction of pressing the lock pin inside the engagement groove along the groove surface of the engagement groove. A tilt device for a ship propulsion device characterized by: (2) In claim 1, after the lock pin has passed through the uppermost engagement groove in the upward direction,
A stopper member is provided to hold the lock pin in a non-engaging position with each engagement groove, and after the lock pin passes through the uppermost engagement groove and moves back down, the lock pin and the stopper member are disposed. A tilt device for a marine propulsion device, which is provided with an engagement adjuster for releasing the engagement with the ship propulsion device. (3) In claim 2, the stopper member is rotatably supported by the swivel bracket at a position close to the cam groove of the swivel bracket in a state where it is resiliently pushed toward the cam groove; 1] Under conditions other than when the lock pin passes through the uppermost engagement groove in the upward direction, the side surface thereof slides into contact with the lock pin that is guided by the cam groove and moves along the groove surface of the engagement groove; [2] After the lock pin has passed through the uppermost engagement groove in the upward direction, it is guided by the cam groove and moves along the guide surface that is continuous with the rear groove surface of the uppermost engagement groove. After the lock pin and its side face abut each other, the stopper part is engaged with the lock pin, and the lock pin is held in the disengaged position with each engagement groove, thereby preventing the swivel bracket from returning in the down direction. A tilting device for ship propulsion equipment that makes this possible. (4) In claim 2, the engagement adjuster is:
It is possible to switch and set the position corresponding to each engagement groove on the circular arc along all the engagement grooves of the clamp bracket, and the lock pin is attached to the stopper member that is engaged with the stopper part. A rotational force is applied in the engagement direction to release the engagement between the lock pin and the stopper part, and the lock pin is locked in the engagement groove located corresponding to the engagement adjuster and the engagement groove in the upper stage. A tilting device for ship propulsion equipment that makes this possible.