EP1526788B1 - Winch, particularly for driving an umbrella - Google Patents

Abstract

Disclosed is a winch, particularly for driving an umbrella, comprising a rope drum ( 48 a) which is driven by a hand crank ( 24 ) and winds up a rope ( 28 ). Functioning of the winch is improved by the fact that said winch is provided with a feeler ( 100 ) which responds to the direction of entry of the rope when the rope ( 28 ) is fully unwound or to the winding of the rope onto the rope drum ( 48 a). Said feeler ( 100 ) is connected to a locking member ( 102 ) that cooperates with a stop ( 104 ) if winding occurs in the wrong direction, said stop ( 104 ) being assigned to the rope drum ( 48 a) and locking the wrong winding direction.

Description

Technical area

The invention relates to a winch, in particular for driving a screen according to the preamble of claim 1.

State of the art

Winches are known several times. When fully unwound rope can this rope wound up again on a cable drum both in one direction and the other become. In certain cases, however, it may be necessary for the Rope can only be wound up in a certain direction on the rope drum should. In known winches this is a latching ring provided with latches, which block the winding of the rope in one direction. To unwind the Rope is turned off in the known winches, the latch, so that it is not effective at the time of rewinding and only again must be turned on. If the switch-on forgotten, that can Winding the rope done in the opposite direction.

In EP-A-1 279 350 a winch is proposed in which a locking device with a releasable braking device combined, which are operated by a winch winch. requirement for the correct function, however, is that the locking device is not from Hand is solvable, but the switching from the locking device to the braking device and vice versa is determined by the direction of rotation of the hand crank. Condition is also that the rope in the right direction on the rope drum is wound up, which is not guaranteed automatically.

A winch according to the preamble of claim 1 is known from US-B-6,196,242.

Presentation of the invention

The object of the invention is to design a winch so that a wrong Winding direction of the rope is automatically prevented on the cable drum.

The object is achieved according to the invention by the characterizing features of claim 1.

Due to the fact that the winch is equipped with a pushbutton which when unwound Rope on the inlet direction of the rope or the winding of the rope on the rope Cable drum responsive, and which is in communication with a locking member, which in the wrong winding direction associated with a cable drum, the wrong Cooperating locking stop cooperates, is automatically ensured that the winding of the rope always takes place in the right direction.

Advantageous embodiments of the winch are defined in claims 2 to 13.

According to claim 2, the button may be biased in the blocking position. According to Claim 3, an embodiment is possible in which the button in exemption is biased. Basically, it is possible that the button only at the point Cable drum is effective, but more advantageous is an embodiment according to claim 4, then the button fixed and arranged over the entire length of the cable drum is.

Particularly preferred is an embodiment according to claim 5, after which the button on both sides in each case on an arm of a two-armed rocker is arranged around an axis is arranged pivotably, which is parallel to the axis of the cable drum and is arranged at a radial distance from this. The locking member is then provided on the other arm of the rocker. This winch speaks to the inlet direction of the rope. For this purpose, it is expedient if the winch after Claim 6 is further developed and the axis of the rocker as a cable drum cross-shaped guide rod is designed, which gives the rope a certain leadership and improves the response of the button.

The claim 7 describes an alternative embodiment of the probe, this as a slider biased toward the surface of the cable drum is configured, on which the locking member is arranged. The locking member starts at Wrong direction of rotation of the cable drum against the stop. With correct direction of rotation The button responds to the cable winding and lifts the locking member the blocking area of the stop.

Particular advantages of the winch arise especially when the Winch according to claim 8 with a detachable locking device and a detachable Brake device is equipped, which combines with each other and through the Hand crank are operated. A particularly suitable embodiment of this combined Locking device and brake device is in the claims 9 to 13 Are defined.

Brief description of the drawings

Figur 1

einen an einem Ausleger angehängten Schirm mit einer bekannten Seilwinde als Antrieb, in geschlossenem Zustand;

Figur 2

den beim Schirm der Figur 1 zur Anwendung gelangenden Schirmstock bei geöffnetem Schirm in grösserem Massstab und in Seitenansicht;

Figur 3

den Schirmstock der Figur 2 im Vertikalschnitt und in grösserem Massstab;

Figur 4

eine erste erfindungsgemäss Seilwinde in schaubildlicher und explosionsartiger Darstellung;

Figur 5

die Seilwinde der Figur 4 in "Freistellung" in Ansicht auf die Seiltrommel;

Figur 6

die Seilwinde der Figur 5 im Schnitt VI-VI der Figur 5;

Figur 7

die Seilwinde der Figur 5 im Schnitt VII-VI der Figur 5;

Figur 8

die Seilwinde der Figur 5 in "Sperrstellung";

Figur 9

die Seilwinde der Figur 8 im Schnitt IX-IX der Figur 8;

Figur 10

eine zweite erfindungsgemässe Seilwinde in schaubildlicher Darstellung;

Figur 11

eine dritte erfindungsgemässe Seilwinde im Vertikalschnitt;

Figur 12

die Seilwinde der Figur 11 in "Freistellung" im Schnitt XI-XI der Figur 11;und

Figur 13

die Seilwinde der Figur 12 in "Sperrstellung".

Exemplary embodiments of the invention will be described in more detail below with reference to the drawings, in which:

FIG. 1

a screen attached to a boom with a known winch drive, in the closed state;

FIG. 2

the screen stick used in the screen of Figure 1 umbrella with open screen on a larger scale and in side view;

FIG. 3

the umbrella pole of Figure 2 in vertical section and on a larger scale;

FIG. 4

a first according to the invention winch in perspective and explosive representation;

FIG. 5

the winch of Figure 4 in "release" in view of the cable drum;

FIG. 6

the winch of Figure 5 in section VI-VI of Figure 5;

FIG. 7

the winch of Figure 5 in section VII-VI of Figure 5;

FIG. 8

the winch of Figure 5 in "locked position";

FIG. 9

the winch of Figure 8 in section IX-IX of Figure 8;

FIG. 10

a second inventive winch in perspective view;

FIG. 11

a third inventive winch in vertical section;

FIG. 12

the winch of Figure 11 in "release" in section XI-XI of Figure 11;

FIG. 13

the winch of Figure 12 in "locked position".

Ways to carry out the invention

Figures 1 to 3 show a screen 2 in the closed state, which at a Boom 4 is arranged, which removably attached to a stand 6 is. Such a screen is known for example from CH-A-367 290 and 666 166. This well-known screen 2 has a screen frame, which is a crown. 8 contains, which is connected via a ball joint 10 with the boom 4. At the Crown 8 are hinged roof bars 12, which extend over support rods 14 at a Support slide 16. The slider 16 and the crown 8 are over a screen stick 18 interconnected.

This umbrella is according to EP-A-1 279 350 with a winch equipped as a drive. The umbrella pole 18 includes a first lower one Stick portion 20 which is connected to the slider 6, wherein it is in an opening of the Slider 16 used and secured by a fuse 21 against slipping is. At the lower end of the stick part a winch 22 is arranged, the is operated by a hand crank 24. Next, the umbrella pole 18 includes a second upper floor part 26 which is connected to the crown 8. When closed Shield according to FIG. 1 are the first floor part 20 and the second floor part 26 separated from each other and connected only via a cable 28 of the winch 22. When the umbrella is open, the stick parts 20 and 26 are connected via a coupling device 30 connected together, as shown in Figures 2 and 3 evident. The coupling device 30 is formed by a profiled Pin 32 on one of the floor parts 20, with a socket 34 of the other Stick member 26 cooperates, wherein the socket with a corresponding counter-profile 36 is equipped to a non-rotatable connection between the floor parts 20, 26 to achieve. The rope 28 is through the hollow shaped stick parts 20, 26 is guided substantially coaxially to the axis 35 and on the inside of the Bush 34 of the coupling device 30 by means of a seal 37 or a node attached.

The first floor part 20 has the winch 22 with the hand crank 24. Further is the first floor part 20 is provided with a ring-like handle 38 which extends extends transversely to the axis of the winch 22 down and on the housing 40 of the Winch is molded. In the present example, the first floor part 20, the Housing 40 of the winch 22 and the ring-like handle 38 designed in one piece and they are formed from two mold halves 42a and 42b which are in a vertical Center plane 44 abut, which transverse to the axis of the winch 22nd is aligned.

The winch 22 is formed from the hand crank 24 which is attached to an axle 46 is, which is mounted in a cable drum 48. The cable drum is in turn stored in bearing plates 50a, 50b of the housing 40. The cable drum serves for Winding and unwinding of the rope 28. The winch 22 is provided with a locking device 52 equipped to the umbrella frame and thus the screen in the open state to keep. This locking device is combined with a braking device 54, which allows a controlled closure of the screen.

The latching device 52 consists of a freely rotatable on the cable drum 48 Latching ring 56 to which a pawl 58 engages, which is mounted in the housing 40 and is biased by a spring 60 against the locking ring. The axis 46 is via a flange 62 and a brake disc 64 on the latching ring 56 at. The Coaxially disposed in an opening 66 of the cable drum 48 axis 46 is connected via a Threaded connection connected to this and has for this purpose an external thread 68, which cooperates with an internal thread 70 of the opening 66 of the cable drum.

The operation of the winch 22 with the latching device 52 and the braking device 54 is as follows:

If the hand crank 24 is rotated to open the screen in a clockwise direction, so is the external thread 68 of the axis 46 further into the internal thread 70 of screwed by the train of rope 28 braked cable drum 48, whereby the flange 62 of the axle 46 presses the brake disk 64 against the latching rim 56 and fixed on the cable drum 48. As a result, the hand crank 24 with the Cable drum 48 connected and the cable 28 can be wound up, the Locking pawl 58 on the ratchet 56 turning back the verkuppelten cable drum prevented. If the screen is to be closed, the hand crank 24 is in Counterclockwise moves, whereby the axis 46 via the external thread 68th is unscrewed from the cable drum 48 and the pressure of the flange 62 loosens on the brake disk 64 in terms of a slip clutch. As soon as the braking force of the brake disk 64 becomes smaller than the tensile force of the cable 28 the cable drum 48, the effect of the latching device 52 is turned off and the Rope 28 begins to drain from the cable drum 48. If the hand crank 24 is stopped, Thus, the tensile force of the rope causes further rotation of the cable drum 48th and thus a tightening of the external thread 68 and the internal thread 70, whereby the braking force on the brake disk 64 increases until the cable drum 48 comes to a standstill. Only by turning back the hand crank again 24 counterclockwise, the unrolling of the rope 28 and thus the Close the umbrella to be started again. This way is a controlled closing of the screen possible.

For a quick closure of the screen, the winch 22 is still with a freewheeling device 71 equipped with a free-running button 72, which on the hand crank 24 opposite side of the housing 40 is arranged. The freewheel button 72 includes a retaining pin 74, which opposes against a locking profile 76 of the cable drum 48 the force of a biasing spring 78 is movable. The freewheel device 71 now contains a further on the hand crank 24 opposite side of the axis 46 arranged axle extension 80 with a blocking device 81, the one Stop 82 carries, which via a spring 84 with the facing end face 86 of Cable drum 48 cooperates. The axle extension 80 has a thread 88 on, which carries the trained as a nut stop 82. A circlip 90 with a radially inwardly facing latch engages in a groove 92 in the Axis extension 80 of the axis on to an unintentional adjustment of the stop 82 to prevent.

The operation of the free-wheeling device 71 is as follows:

When you press the freewheel button 72 of the retaining pin 74 with the locking profile 76th the cable drum 48 is engaged and the cable drum 48 is blocked. In this State, the hand crank 24 can be rotated further counterclockwise, until the external thread 68 and the internal thread 70 are solved so far that no Friction connection between the brake disc 64 and the detent ring 56 consists. At the same time, the stop 82 presses the spring 84 against the end face 86 of the cable drum 48, so that the cable drum 48 and the axle 46 are blocked and the external thread 68 and the internal thread 70 no longer relative to each other can move. This prevents the brake disk 64th can be effective on the latching ring 56. Now let go of the freewheel button 72, Thus, the rope 28 rolls under the tensile force of the rope 28 of the cable drum 48 and turns the cable drum 48 and connected to this hand crank. The blocking of the blocking device 81 is released and the braking device 54 and the latching device 52 are activated again when the hand crank 24 with increased cable clockwise, that is in the opening direction of the screen is moved, whereby the stopper 82 from the end face 86 free comes and the clamping action of the brake disc 64 begins to act again.

The inventive rope wind according to the figures 4 to 10 is for different Uses suitable, but especially in connection with a Winch 22 of the above type, it will therefore be for the following Description uses the above reference numerals for like parts and with respect to Detailed training is made to the above description.

Figures 4 to 9 show an embodiment of an inventive Rope wind 22a, which has a button 100, which is fully unwound cable 28 on the inlet direction of the rope on the cable drum 48 a responds and with a Locking member 102 is in communication, which in the wrong winding direction with a, associated with the cable drum 48a, blocking the wrong winding direction Stop 104 cooperates.

The button 100 extends over the entire length of the cable drum 48a and is attached to an arm 106 of a two-armed rocker 108, which on an axis 110 is pivotally mounted. The axis 110 is on both sides of the cable drum 48th Stationarily arranged bearing plates 50a, 50b attached. The second arm 112 of the Rocker 108 includes the locking member 102, which cooperates with the stop 104, which is attached to the cable drum 48. A spring 114 is on the axle 110 attached and supported by a spring arm 116 on the housing 118 and with the other spring arm 120 biases the button 100 in exemption. The the Cable drum 48a cross-axis 110 also acts as a guide for the Rope 28, as shown in Figures 7 and 9 in detail. Is the rope according to FIG. 7 wound in the correct direction ("open" in FIG. 4) the button 100 in the exemption shown in Figure 7. If the winding direction however, in the wrong direction ("to" in Figure 4) so the incoming rope lifts 28 the button 100 in the locked position, in which the locking member 102 with the stop 104 cooperates, as shown in Figure 9. A further turning of the Crank 24 is then blocked.

FIG. 10 shows a further embodiment of the invention Winch 22b, in which a button 122 is designed as a slide 124, the practical radially against the cable drum 48 is deliverable. Springs 126 tension the Slider 124 against the cable drum 48b before. The slider 124 is with locking members 128 equipped, which cooperate with stops 130, which on lateral Flanges 132 of the cable drum 48b are arranged. The arrangement is like this hit that in the wrong direction of rotation (counterclockwise) the Locking members 128 abut against the stops 130, thereby turning further prevents the cable drum 48b in the wrong direction of rotation. Will the rope drum 48b, however, driven in the right direction of rotation (clockwise), so the locking members 128 are ineffective. The turns of the rope 28 on the cable drum 48b lift the button 122 as the winding process progresses from further, whereby the locking members 128 are increasingly from the stops 130 radially removed and thus become ineffective, so that the winch for unwinding the rope 28 is also freely rotatable in the opposite direction until the button 122 determines that the cable 28 is completely unwound from the cable drum 48b is.

Figures 11 to 13 show a further embodiment of an inventive Rope wind 22c, with a combined latching device 52a and Braking device 54a is equipped and has a button 100a, the analog that of Figures 4 to 9 is formed. When fully unwound rope 28 speaks the button 100a on the direction of entry of the rope on the cable drum 48c and is connected to a locking member 102a in connection, which in the wrong winding direction with one, the cable drum 48c assigned, the wrong winding direction locking stop 104a cooperates.

The button 100a extends over the entire length of the cable drum 48c and is attached to an arm 106a of a two-armed rocker 108a which is mounted on an axle 110a is mounted pivotably. The axis 110a is on both sides of the cable drum 48c stationarily arranged housing sides 134 attached. The second arm 112a of the Rocker 108a includes the locking member 102a, which cooperates with the stop 104a, which is attached to the cable drum 48c. Instead of the spring 114 in the example of Figures 4 to 9, the rocker 108a is the first in this example Arm 106a provided with a mass piece 136, which by gravity of the mass 136 causes the bias of the rocker 108a in the off position. The cable drum 48c cross-axis 110a in turn acts as Guide for the rope 28, as shown in Figures 12 and 13 in detail. If the rope is wound in the "right" direction according to FIG the button 100a in the "exemption" shown in Figure 12. If the winding direction but in the "wrong" direction, so the incoming swings Rope 28 the button 100a in "blocking position" in which the locking member 102a with the Stop 104a cooperates, as shown in Figure 13. A further turning the hand crank 24a is then blocked.

To form the brake device 54a combined with the detent device 52a the cable drum 48c has a stub shaft protruding from the side of the housing 134 138, which is provided on the housing side with a support flange 140. At the support flange 140 is a brake disk 64 a, followed by a detent ring 56a and a pressure plate 142, against which the end face 144 a Threaded sleeve 146 is present, which is on a threaded portion 148 of the stub shaft 138 is screwed. The threaded sleeve 146 forms part of Winch 22c winch 24a. A arranged at the free end of the stub shaft Stopper 150 prevents in the form of a disk held by a nut an unintentional unscrewing the hand crank 24a from the stub shaft 138. With the latching ring 56a acts a biased by a spring 60a Detent pawl 58 a together, which is mounted in a stationary housing 152.

Zum Aufwickeln des Seiles 28 wird die Handkurbel 24a im Uhrzeigersinn bewegt, wodurch die Handkurbel 24a die Gewindehülse 146 auf den Gewindeabschnitt 148 einschraubt und dabei mit der Stirnseite 144 die Druckscheibe 142 gegen den Rastkranz 56a drückt, bis diese zwischen der Bremsscheibe 64a und der Druckscheibe 142 arretiert wird. Der Rastkranz 56a und die angreifende Rastklinke 58a verhindern ein Zurückdrehen der Seilwinde und damit ein Abwickeln des Seiles 28. Zum Abwickeln des Seiles 28 wird die Handkurbel 24a gegen den Uhrzeigersinn gedreht, wobei aufgrund der Sperrwirkung der Rastvorrichtung 52a die Gewindehülse 146 am Gewindeabschnitt 148 herausgeschraubt wird und dadurch die Presskraft an der Druckscheibe 142 reduziert wird, wodurch auch die Arretierung des Rastkranzes 56a reduziert wird und sich die Seiltrommel 48c unter der Zugkraft des Seiles 28 ebenfalls im Gegenuhrzeigersinn bewegen kann und das Seil 28 ablässt. Dies bewirkt aber wiederum ein Einschrauben der Gewindehülse 146 auf den Gewindeabschnitt 148 und damit ein erneutes Festklemmen des Rastkranzes und damit Bremsen des Seilablaufes. Durch gesteuertes Drehen der Handkurbel 24a im Gegenuhrzeigersinn kann somit ein ebenso gebremstes, das heisst gesteuertes Ablassen des Seiles 28 von der Seiltrommel 48c erreicht werden.

The operation of the winch 22c is as follows:

To wind the cable 28, the hand crank 24a is moved clockwise, whereby the hand crank 24a, the threaded sleeve 146 screwed onto the threaded portion 148 and thereby pushes the thrust washer 142 against the locking ring 56a with the end face 144 until it between the brake disc 64a and the pressure plate 142nd is locked. The unwinding of the cable 28, the hand crank 24a is rotated counterclockwise, wherein due to the locking action of the latching device 52a, the threaded sleeve 146 is unscrewed at the threaded portion 148. Der Rastkranz 56a und die offense Rastklinke 58a bzw. and thereby the pressing force on the pressure plate 142 is reduced, whereby the locking of the locking ring 56a is reduced and the cable drum 48c under the pulling force of the cable 28 can also move counterclockwise and the rope 28 discharges. However, this in turn causes a screwing of the threaded sleeve 146 on the threaded portion 148 and thus re-clamping the locking ring and thus braking the rope sequence. By controlled rotation of the hand crank 24a in the counterclockwise direction thus a likewise braked, that is controlled discharge of the cable 28 can be achieved by the cable drum 48c.

In particular, the winch of Figures 11 to 13 is preferably suitable for Umbrellas according to WO97 / 04682 and WO01 / 52686.

LIST OF REFERENCE NUMBERS

2

umbrella

2a

umbrella

4

boom

6

stand

8th

Crown

10

ball joint

12

roof bars

14

support rods

16

pusher

18

umbrella pole

20

first floor part

20a

first floor part

21

fuse

22

winch

22a

winch

22b

winch

22c

winch

24

winch

24a

winch

26

second floor

28

rope

30

coupling device

32

spigot

34

Rifle

35

Axis of 18

36

counter profile

37

seal

38

ring-like handle

40

casing

42a

mold

42b

mold

44

midplane

46

axis

48

cable drum

48a

cable drum

48b

cable drum

48c

cable drum

50a

bearing plates

50b

bearing plates

52

locking device

52a

locking device

54

braking device

54a

braking device

56

catch rim

56a

catch rim

58

latch

58a

latch

60

feather

60a

feather

62

flange

64

brake disc

64a

brake disc

66

opening

68

external thread

70

inner thread

71

Freewheel device

72

Freewheel button

74

retaining pin

76

locking profile

78

biasing spring

80

axle extension

81

blocking device

82

attack

84

feather

86

Front side of 48

88

thread

90

circlip

92

groove

100

button

100a

button

102

locking member

102

locking member

104

attack

104a

attack

106

poor

106a

poor

108

seesaw

108a

seesaw

110

axis

110a

axis

112

poor

112a

poor

114

feather

116

spring arm

118

casing

120

spring arm

122

button

124

pusher

126

feather

128

locking member

130

attack

132

flange

134

case side

136

bulk Unit

138

stub shaft

140

support flange

142

thrust washer

144

front

146

threaded sleeve

148

threaded portion

150

attack

152

casing

Claims (13)

1. A winch, particularly for driving an umbrella, having a rope drum (48, 48a, 48b, 48c) driven by a manual crank (24, 24a) for winding up a rope (28), characterized in that it provides a feeler (100, 100a, 122) that responds to the direction of entry of the rope if the rope (28) is fully unwound or if the rope is wound onto the rope drum (48, 48a, 48b, 48c), said feeler being connected to a locking member (102, 102a, 128) that coacts with at least one stop (104, 104a, 130) if the winding occurs in the wrong direction, said stop being assigned to the rope drum (48, 48a, 48b, 48c) and locking the wrong winding direction.
2. The winch of claim 1, characterized in that the feeler (122) is prestressed in the locking position.
3. The winch of claim 1, characterized in that the feeler (100, 100a) is prestressed in the released position.
4. The winch of claims 1 to 3, characterized in that the feeler (100, 100a, 122) is fixedly mounted over the entire length of the rope drum (48, 48a, 48b, 48c).
5. The winch of claim 4, characterized in that the feeler (100, 100a) is arranged on both sides on an arm (106, 106a), respectively, of a two-arm rocker (108, 108a), which is pivotably mounted around a pivot pin (110, 110a), which is arranged parallel to the axis of the rope drum (48a, 48c) and at a radial distance thereto, wherein the locking member (102, 102a) is arranged respectively on the other arm (112, 112a) of the rocker (108, 108a).
6. The winch of claim 5, characterized in that it comprises a guide rod (110, 110a) extending over the rope drum (48a, 48c) for entry of the rope (28).
7. The winch of claim 4, characterized in that the feeler (122) is configured as a slide (124) that is prestressed against the rope drum (48b) and on which the locking member (128) is arranged, which runs against the stop (130) in the case of a wrong direction of rotation of the rope drum (48b) and can be lifted out of the locked area of the stop (130) in the case of a correct direction of rotation.
8. The winch of one of the claims 1 to 7, characterized in that it comprises a releasable click-stop device (52, 52a) and a releasable brake device (54, 54a), which can be intercombined and can be operated by means of the manual crank (24, 24a).
9. The winch of claim 8, characterized in that the manual crank (24, 24a) is connected via a threaded joint (68, 70, 146, 148) to the rope drum (48, 48a, 48b, 48c), which is mounted in a housing (40, 134) of the winch (22, 22a, 22b, 22c) and can be latched by means of the click-stop device (52, 52a) to a ratchet (56, 56a) that is rotable on the rope drum (48, 48a, 48c) and a pawl (64, 64a) located on the housing side; the ratchet (56, 56a) is connected via a brake disk (64, 64a) in the axial direction to the manual crank (24, 24a) such that during the opening motion of the manual crank (24, 24a) the brake disk (64, 64a) is pressed against the ratchet (56, 56a) by the threaded joint (68, 70, 146, 148) and blocks said ratchet, and that during the counterclockwise closing motion of the manual crank (24, 24a), the pressure against the brake disk (64, 64a) is released in the sense of a slipping clutch, so that the rope (28) can roll off the rope drum (48, 48a, 48b, 48c).
10. The winch of claim 9, characterized in that the manual crank (24) is attached to an axle (46), which is guided coaxially through an opening (66) of the rope drum (48, 48a, 48b) and screwed together with an inside thread (70) of the rope drum (48) via an outside thread (68).
11. The winch of one of the claims 8 to 10, characterized in that a freewheel device (71) is assigned to the click-stop device (52) with a freewheel button (72) that can be operated from the outside of the housing (40), which contains a retaining pin (74) that can retract against a locking profile (76) of the rope drum (48, 48a, 48b) in order to block the rope drum (48, 48a, 48b) until the brake device (54) becomes inactive as the closing motion of the manual crank (24) progresses.
12. The winch of claim 11, characterized in that the freewheel device (71) has a stop (82), preferably a nut, against which the manual crank (24) rests in a blocking state as a closing motion progresses and if the brake device (54) is released.
13. The winch of claim 12, characterized in that the stop (82) is arranged on an axle extension (80) of the axle (46) and coacts with the face (86) of the rope drum (48) via a spring (84).

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