JPH036118B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a winch, and more particularly to a manual winding winch that allows rope winding and rope release to be operated with one hand.

FIGS. 1 and 2 show an example of an automatic bite type seat winch (Japanese Patent Application Laid-Open No. 126650/1982) which has been conventionally used as a seat winch for yachts. In the figure, 1 is a fixed base, 1a is a fixed frame integrated with the fixed base 1, 1b is also a fixed shaft cylinder part,
2 is a winch drum; 3 is a roller bearing inserted between the winch drum 2 and the shaft cylinder portion 1b;
4 is a main shaft rotatably provided in the shaft cylinder portion 1b, 5 is its roller bearing, and 6 is the main shaft 4 and the drum 2.
7 is a clamp ring that forms a variable width rope biting groove between the drum 2 and the upper end surface of the drum 2; 8 and 9 are clamp rings that connect the clamp ring 7 to the drum 2; A guide rod slidably guides in the axial direction, 10 is a coil spring biased to draw the clamp ring 7 toward the drum 2, 11 is a sleeve fixed to the fixed shaft cylinder portion 1b, and 11a is a flange thereof. , 12 is a rope release member that also serves as a rope guide fixed to the flange portion 11a, 13 is a rope, and 14 is a handle fitted to the main shaft 4.

The rope release member 12 which also serves as a rope guide allows the rope 13 to be transferred between the drum 2 and the rope engaging part 15 formed between the upper end surface of the drum 2 and the clamp ring 7 while the drum 2 is rotating. The rope guide section 1 guides the rope 13 so as to
2a, the rope 13 caught in the rope biting part 15 is removed from the rope biting part 15 while the drum 2 rotates in the direction in which the rope 13 is fed out. A rope release protrusion 12b for pushing outward is integrally formed.

As mentioned above, the conventional winch has a fixed shaft cylinder part 1.
Flange 1 fixed to b by serration 16
Since the rope release member 12 is fixed via the winch 1, the rope release position cannot be easily changed once the winch is attached to the hull or the like. If the rope release position is to be changed, the setting position of the rope release member 12 must be changed after the fitting portion of the serrations 16 shown in FIG. 2 is removed. In addition, in order to fix the rope release member 12 to the fixed base 1, the fixed shaft cylinder portion 1b, which is integrated with the base 1, must be raised nearly above the main shaft 4 where the rope release member 12 is located, which reduces the weight of the winch. There was no sign of an increase. Furthermore, when the main shaft 4 rotates, the rope 13 is wound around the drum 2 and simultaneously released from the rope catching part 15. Therefore, when winding the rope 13 around the drum 2, the amount of work required to release the rope 13 is reduced. Since they are consumed at the same time, there is a drawback that when winding the rope, an extra force is required for the amount of work required to release the rope.

This invention was made to solve the above-mentioned drawbacks of the conventional device, and is a ratchet type winch in which a rope is wound around a drum by alternately reversing the drive shaft. The purpose is to link the winch with the shaft so that the position of the rope release member can be changed arbitrarily, simplify the structure of the winch, reduce its weight, and further reduce the force when winding the rope. It is something to do.

Embodiments of the winch of the present invention will be described below with reference to FIGS. 3 to 11. This example describes a winch for a yacht. First, Figure 3~
As shown in FIG. 8, a handle insertion groove 2 is provided in a fixed shaft cylinder 20a formed integrally with a fixed base 20.
In order to prevent the drum 23 from rotating in the opposite direction, a drive shaft 21 having a drive shaft 1a on the upper part is rotatably provided, and a drum 23 is rotatably fitted to the outer periphery of the fixed shaft cylinder 20a via a needle bearing 22. A reverse stopper pole 24 is attached to the lower outer periphery of the fixed base 20, and an engaging protrusion 23a is provided on the inner periphery of the drum 23 facing the reverse stopper pole 24. In addition, in order to transmit the rotation of the drive shaft 21 to the drum 23, a drive pole 25 is provided on the outer periphery of the drive shaft 21 at an approximately intermediate position, and an engaging protrusion is provided on the inner periphery of the drum 23 facing the drive pole 25. 23b is arranged. On the other hand, a lower clamp ring 26 having an L-shaped cross section formed in an annular shape is fixed to the upper end surface of the drum 23 with a screw 27, and an upper clamp ring 28 having an inverted L-shaped cross section formed in an annular shape. is rotatably fitted opposite to the lower clamp ring 26 to form a rope biting part 29 between the upper and lower clamp rings 26 and 28, and in order to ensure rope biting, the rope of the lower clamp ring 26 is A plurality of arcuate protrusions 26a are provided on the engagement surface, and a plurality of protrusions 28a are provided on the rope engagement surface of the upper clamp ring 28.
will be established. Further, the annular base 30a of the rope release member 30 which also serves as a rope guide is fitted onto the outer periphery of the flange 21b protruding from the upper part of the drive shaft 21, and the flange 21b and the base 30a of the rope release member 30 are connected to the connecting plate 31. through screws 32,3
Connect by 3. A rope release member 30 which also serves as a rope guide has a rope release projection 30b projecting from the rope release member 30, and this projection 30b faces the rope engagement portion 29. Further, a rope guide portion 30c for guiding the rope from the drum 23 to the rope catching portion 29 is formed at the outer end of the rope releasing member 30. Note that 34 is a disk having a center hole that fits into the recess on the upper surface of the connecting plate 31, 35 is a retaining ring thereof, 36, 37, 38, 39 are thrust washers, and 40, 41 are retaining rings.

Next, the operation of this embodiment will be explained. As shown in FIGS. 4 to 6, the rope 42 wound three times around the drum 23 (diameter D) passes through the rope guide part 30c of the rope release member 30, is held in the rope biting part 29, and is held in the rope release protrusion. It is wound up to around 30b.
The handle (not shown) whose base is inserted into the handle insertion slot 21a at the upper part of the drive shaft 21 is further rotated to move the rope guide section in the direction of the release position of the wound rope 42 (in the direction of arrow C in FIG. 6). 30c
and the rope release protrusion 30b, and as shown in FIG.
When rotated, the drive pole 25 attached to the drive shaft 21 engages the drum 2 via the engagement protrusion 23b.
Drive 3. At the same time as the drum 23 rotates clockwise, the rope guide portion 30c and the rope release protrusion 30b move to the above rope release position D.
Since the rotation rotates clockwise by an angle θ from , the rope release protrusion 30b, and the rope 42 in contact with the rope biting portion 29 are in the same relative position at each position, so the rope release member 3
The rope 42 in contact with the rope 42 and the rope 42 wound within the rope biting part 29 are held without relative movement. Therefore, the rope 42
is not canceled. Next, as shown in FIG. 8, when the handle is rotated counterclockwise (in the direction of arrow F), the drive pole 2 attached to the drive shaft 21 is rotated.
5 and the engaging protrusion 23b of the drum 23 do not engage with each other, and the reverse stopper pole 24 provided on the base 20
Due to the engagement of the engaging protrusion 23a of the drum 23, the drum 23 is stopped without rotating either clockwise or counterclockwise. On the other hand, the rope release member 30 fixed to the drive shaft 21 is returned counterclockwise by an angle θ as the drive shaft 21 rotates.
Therefore, the rope 42 wound around the drum 23 and the biting part 29 is in a stopped state, and the rope guide part 30c and the rope release protrusion 30b are in a stopped state.
The rope guide portion 30c slides on the inside of the rope 42 wound around the drum 23, and the rope releasing protrusion 30b moves the rope 42 wound inside the rope catching portion 29. Release when peeling. The rope 42 is therefore released and collected in the direction of an arbitrary release position (in the direction of arrow G in FIG. 8).

9 to 11 show another embodiment of the winch of the present invention, and this embodiment will be described below.

First, as shown in FIG. 9, a drive shaft 51 having a handle insertion slot 51a at the top is rotatably provided in a fixed shaft cylinder 50a formed integrally with a fixed base 50. In order to rotatably fit the drum 52 on the outer periphery and prevent the drum 52 from rotating in the opposite direction, a reverse stopper pole 53 is pivotally supported on the lower outer periphery of the fixed base 50. An engaging protrusion 52a is provided on the inner periphery of the drum 52 facing the drum 52. In order to transmit the rotation of the drive shaft 51 to the drum 52, a drive pole 54 is pivotally supported on the inner periphery of the upper part of the drum 52, and an engaging protrusion 51b is provided on the outer periphery of the drive shaft 51 facing the drive pole 54. to be placed.

Further, a ring-shaped rope release member 55 is rotatably fitted to the upper end of the drum 52. Note that 56 is a positioning ring for the rope release member 55;
The drum 52 is mounted so as to support the upper and lower surfaces of the drum 5, respectively.
They are fitted into respective annular grooves provided in the.
Further, on the lower surface of the rope release member 55, as shown in FIG. 11, a ring-shaped protrusion 55a for rope release that gradually projects downward in a spiral shape is provided. Note that 55b is a stepped portion for releasing the rope.

Further, 57 is a disk that abuts the upper end surface of the drum 52, has an outer periphery that fits with the rope release member 55, and an inner periphery that fits with the drive shaft 51, and 58 is a disk that comes into sliding contact with the top surface of the disk 57. 59 is a positioning ring fitted into the upper annular groove of the drive shaft 51, and 59 is a positioning ring fitted into the lower annular groove of the drive shaft 51 so as to be in sliding contact with the lower surface of the fixed shaft cylinder 50a.

Reference numeral 60 denotes a collar fitted into a notch in the upper slope of the rope release member 55. The head 61a of the bolt 61 is inserted into the upper surface of the collar 60, and the threaded portion of the bolt 61 is inserted downward. The bolts 61 are screwed into the rope release member 55 through the collar 60, and the rollers 62 are
Position 2.

Reference numeral 63 denotes a handle for rotating the drive shaft 51. A shaft 63a that fits into the handle insertion slot 51a of the drive shaft 51 projects from the base of the handle 63, and a shaft 63a that fits into the handle insertion slot 51a of the drive shaft 51 is provided on the lower surface of the arm 63b of the handle 63. forms a recessed portion 63c that engages with the roller 62 as shown in FIG. Note that 63d is a grip portion of the handle 63.

Next, the operation of the winch of the present invention constructed as described above will be explained. As shown in the figure, the rope 64 that has been wound around the drum 52 multiple times is wound around the drum 52 until it contacts the lower surface of the rope release member 55.
That is, when the handle 63 is rotated clockwise (in the direction of arrow H) in FIG.
1. The drum 52 also rotates clockwise via the engaging protrusion 51b and the driving pole 54, and the rope 64 is wound around the drum 52. At this time, as the drum 52 rotates, the concave portion 63c of the handle 63 and the roller 6
2. Since the rope release member 55 also rotates via the bolt 61, the relative position of the rope 64 in contact with the rope release member 55 and the rope release step 55b does not change. Therefore, the release action of the rope 64 is not performed during this rope winding.

However, when the handle 63 is rotated counterclockwise (in the direction of the arrow) in FIG.
engages with the engaging protrusion 52a to stop the drum 52 from rotating backward, so the drum 52 remains in a stopped state. However, when the handle 63 rotates counterclockwise, the rope release member 55 is released via the roller 62 and the bolt 61.
rotates counterclockwise together with the handle 63, so the rope release step 55b rotates counterclockwise with respect to the drum 52, and the rope 64 wrapped around the drum 52 is moved in the direction of arrow J in FIG. It can be removed by peeling it off. Therefore, in the winch of the present invention, the rope 64 can be released and pulled out approximately in the direction directed by the arm 63b of the handle 63, so the release position of the rope 64 can be set arbitrarily by selecting the operating position of the handle 63. can be selected.

This invention has the above-described configuration, and in particular, in the first embodiment, the rope release member 30 is connected to the drive shaft 2.
1, and in the second embodiment, the rope release member 55 is operated in conjunction with the drive shaft 51 via the handle 63.
Even after the winch is attached to the hull, the direction of the rope release position can be easily selected by rotating the drive shaft, and the fixed shaft cylinder integrated with the fixed base is the rope release member. There is no need to raise the drive shaft above the second drive shaft.
It is shorter than the conventional one shown in the figure.

Therefore, according to the present invention, the weight of the winch can be reduced, and the serration process is not required between the upper outer periphery of the base and the inner periphery of the connecting member of the rope release member, unlike the conventional automatic biting winch. The structure is also simplified since there is no need to apply Furthermore, in the winch of this invention, the operation of winding the rope around the drum and the operation of unwinding the rope are performed separately, so all the energy applied to the drive shaft when winding the rope around the drum can be used to wind the rope. An excellent effect can be obtained in that the drive shaft force for winding is reduced.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a conventional automatic biting type sheet winch, Fig. 2 is a longitudinal sectional view thereof, Fig. 3 is a longitudinal sectional view of the winch of the present invention, and Fig. 4 is a line A--A in Fig. 3. A cross-sectional plan view taken along line A, FIG. 5 is an elevational view, FIG. 6 is a cross-sectional plan view taken along line B-B in FIG.
The figure is a longitudinal sectional view showing another embodiment of the winch of the present invention, and FIG. 10 is a partially cutaway plan view thereof.
FIG. 11 is a partial cross-sectional view taken along line X--X in FIG. 10. 20...Fixed base, 20a...Fixed shaft cylinder, 21
...Drive shaft, 22 needle bearing, 23...
Drum, 23a, 23b... Engaging protrusion, 24...
Reverse stop pole, 25... Drive pole, 26...
...lower clamp ring, 27...screw, 28...
Upper clamp ring, 29... Rope biting part, 3
0... Rope release member that also serves as a rope guide, 30
a... Annular base, 30b... Rope release protrusion,
30c... Rope guide section, 31... Connection plate, 3
2, 33... Screw, 42... Rope, 50... Fixed base, 50a... Fixed shaft cylinder, 51... Drive shaft,
51b...Engaging protrusion, 52...Drum, 52a...
...Engaging protrusion, 53... Reverse stopper pole, 54...
Drive pole, 55...Ring-shaped rope release member, 55a...Ring-shaped protrusion, 55b...Rope release step, 60...Collar, 61...Bolt, 62...Roller, 63... Handle, 63c
...Concavity, 64...rope.

Claims (1)

[Claims] 1. A ratchet type winch in which a rope is wound around a drum by alternately reversing the drive shaft, characterized in that the rope release member is interlocked with the drive shaft.