JPH07108470A - Tightening latch for tie cords - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the tightening latch for a tie cord that ties a load through two locking mechanisms, to improve the safety in use and to make it easier to use. A tightening latch for tightening and loosening a tightening belt in a stepwise manner has a bracket 1, a tightening lever 2, a winding shaft 4 for holding a ratchet wheel 3, 3 ', and two locking mechanisms. The ratchet wheels 3, 3'form a common locking member for both locking mechanisms. A drive lock mechanism that functions between the tightening lever 2 and the hoisting shaft 4 serves to drive the hoisting shaft 4 to rotate. A reverse rotation prevention lock mechanism that works between the bracket 1 and the winding shaft 4 prevents the winding shaft (4) from rotating in the reverse direction. This reverse rotation prevention lock mechanism
It consists of a ratchet wheel 3, 3'and two separate locking sliders 5, 5 '. The disengagement projections 37 additionally formed on the clamping lever 2 allow the locking sliders 5, 5'to be alternately disengaged from the teeth, whereby the clamping latch can be disengaged in a stepwise manner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tightening latch for a tie strap, which also provides the tie strap tension necessary for fixing a cargo, for example, stepwise via a locking mechanism. It also relates to the type of load.

[0002]

2. Description of the Related Art This type of tying cord can be constructed as a tying belt, a chain, a steel cable, a sail or the like made of a fiber product. The clamping latch disclosed by DE-PS 3344487 is known. This known clamping latch consists of one-sided tooth and two locking sliders, which run parallel side by side and are mounted in one common guide slit. With both of these locking sliders, the jump from the locking position of the locking mechanism to the locking position is kept small while the pitch angle is kept relatively large. About this, Luger (Lu
Eger) "Technical Encyclopedia" Volume 1 (published in 1960) p.
You can learn from 530.

In the case of the known tightening latch, the tightening tension is
Since it can be procured in small steps, a high tension can be applied to the tying rope, but when it is loosened, the tension that has been acting up to that point is sharply reduced. Even when the tying tension is high, additional tension is applied to the tying rope due to the deviation of the load during transportation, so that when the tying is released, a so-called "whiplash effect" occurs in the tying rope.
This whipping effect may damage the unloading worker, which is a safety issue.

Another disadvantage of the known latch is that after loosening the latch, the cargo which slips down can no longer be held firmly by the tie cords.

[0005]

SUMMARY OF THE INVENTION The problem underlying the present invention is to improve a tightening latch of the type mentioned at the outset to increase its safety and ease of use.

[0006]

This problem has been solved by means of the combination of the features of claim 1. The aim of the solution according to the invention is that the clamping latch is provided with two locking mechanisms. It is fixedly connected to the winding shaft of the tightening latch,
A ratchet wheel with teeth facing in one direction serves as a common locking piece for both locking mechanisms. The drive lock, which acts between the tightening lever and the winding shaft, has a drive slider for driving the rotation of the winding shaft, which is mounted in the tightening lever so as to be slidable in the longitudinal direction and which meshes with the teeth in the form of a drive. There is. The reverse rotation prevention lock that acts between the bracket and the hoisting shaft is vertically supported in the bracket, and has two locking sliders as lock pieces, which are arranged in a staggered manner around the ratchet wheel. The two locking sliders slidably supported in the separate guide slits of the bracket are appropriately distributed around the ratchet wheel, so that both locking sliders alternately shift the ratchet wheel from time to time. It is designed to be locked. In short, when one locking slider is in a locked state with the ratchet wheel, the other slider is in a non-locked state.

The advantage of this locking slider arrangement is that the winding shaft can be tightened in small steps corresponding to half the tooth pitch, as in the known art.
Therefore, the tightening force required for each tightening step is reduced.

The idea underlying the present invention is not only to increase the tying tension acting on the tying cord in a stepwise manner,
In the same way, it means to reduce in steps. The tightening lever, which drives the winding shaft to rotate via the drive slider, has its bearing end pivotally supported at the winding shaft, and projects radially from the circumference of the bearing end. It has a dissociation protrusion. In order to reduce the tension acting on the lacing rope in a stepwise manner, the drive slider can be kept inactive in the disengaged position from the teeth and also the clamping lever is moved away from the bracket in the clamping direction. It is pivotable in the direction so that the disengagement projections are in each case moved one of the locking sliders out of the tooth into its disengaged position. By alternately pivoting the clamping lever in the clamping direction and in the opposite direction, both locking sliders can be deactivated alternately in each case.

By reciprocating the tightening lever as described above, the tension acting on the tying cord is stepwise reduced, so that the tying cord is also loosened stepwise. If the cargo is displaced during transit or if it is found that the cargo is no longer securely supported by the loading surface while the ropes are loosened, operate the drive lock to re-engage it. So that the tie cords are tight and the cargo is held down. If the cargo is once again under full tie-down tension, appropriate measures can be taken to safely unload the displaced cargo. The main advantage of the tightening latch according to the invention is thus the increased safety of tying off the lacing rope during unloading. Further, by repeatedly disengaging the tightening latch, there is an effect that the above-mentioned whipping effect can be prevented.

The adjoining position of the disengagement projection and the control cam according to claim 2 improves the operability of the tightening latch. The disengagement projection is arranged so as to precede the control cam in the tightening direction. The clamping lever, which is initially resting on the bracket, is first pivoted in the clamping direction into the locking area of the clamping latch. By further pivoting the clamping lever in the clamping direction, the lever reaches the dissociation zone. In this area, the disengagement lugs alternately disengage the locking slider from the locking condition with the teeth of the ratchet wheel. When the tension is reduced so that the straps are still loose around the cargo, both locking sliders will
Further pivoting of the clamping lever in the clamping direction causes it to be disengaged together via the control cam. The winding body of the tying rope still remaining on the winding shaft can be easily pulled out from the winding shaft. According to the idea of claim 2, it is possible to arrange the tightening lever such that the locking position, the disengaged position, and the open position can be moved back and forth so as to be easily operated.

Claims 3 to 5 show a tightening lever structure which is convenient in terms of manufacturing technology and structurally simple. The handle provided at the gripping end facing the clamping lever bearing end serves, on the one hand, as a lateral connecting member bridging between the clamping lever side walls and, on the other hand, as a pivoting handle for the clamping lever. By constructing the tightening lever in a transparent shape, its own weight can be reduced.

The lateral connecting yoke bridging between the side walls of the tightening lever further stabilizes the structure of the tightening lever and serves as a solid support for the pressurized drive slider. The drive slider can be easily disengaged from the tooth via its U-shaped grip. To this end, the handle and the U-shaped grip are arranged as follows. That is, when the drive slider is disengaged from the teeth, the operator's hand is placed on the handle, the middle finger and the ring finger are passed through the U-shaped grip, and the drive slider can be pulled toward the handle to move vertically. Place it.

Claims 6 to 9 show a construction of the bracket which is structurally simple and production-friendly.
This bracket is light in weight for its rigidity. Since both free ends of the bracket are formed into a fork shape, on the other hand, the tying cord fixing end is
It can be easily fixed to the bracket, on the other hand, the winding shaft can be easily incorporated into the bracket. However, it is also possible to attach the free end of the bracket directly to the transport means, for example to the loading surface of the truck.

Furthermore, the symmetrical construction of the clamping latch according to claim 9 is also advantageous. With the symmetrical structure, a large number of equal members can be used, and the manufacturing cost of parts can be reduced. In addition, in the case of a symmetrical structure, a symmetrical distribution of force on the clamping latch is also possible when applying tension.

By taking measures according to the tenth and eleventh aspects, it is possible to prevent the tightening lever from being erroneously swung in the tightening direction and being guided from the tightening area to the disengaging area.

With the structure of the dissociation zone according to the twelfth to fifteenth aspects, the ease of use of the tightening lever and the safety can be increased. The clamping lever only has to be swiveled into the disengagement zone and reciprocated between the limiting stoppers in order to loosen the binding tension. Each time the drive slider contacts one of the two limiting stoppers, the winding shaft rotates in the direction opposite to the tightening direction by half the tooth pitch. This allows
Allows easy and safe step reduction.

By constructing the locking slider according to claims 16 to 20, the mode of action of the clamping latch is further improved. That is, the locking slider can easily move vertically between its both end positions and can transmit a large force. The locking slider can be easily assembled in the guide slit of the bracket, forming a robust and permanent form-fitting connection with the bracket.

According to the twenty-first to twenty-third aspects, by making the locking slider curved, the overall height of the tightening latch can be kept low. The low configuration tightening latch is particularly suitable for tying ropes of textile material. Furthermore, the tightening latch has a smaller overall height, which requires less space for transportation or storage. In addition, since the tightening latch does not project too much from the lacing rope, there is less risk of injury and therefore greater safety in use.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A plurality of embodiments having other features of the present invention will be described with reference to the drawings.

The tightening latch according to the invention is essentially
A base body configured as a bracket 1, a clamping lever 2,
It consists of two claw wheels 3 and 3'and a winding shaft 4 for holding them. The ratchet wheels 3, 3 ′ together with the two locking sliders 5, 5 ′ mounted on the bracket 1 form a reverse lock.

The bracket 1 is composed of bracket side walls 7 and 7'extending in the longitudinal direction 6 and a bracket bottom portion 9 connecting these side walls 7 and 7'in the lateral direction 8. In this case, the horizontal direction 8 is a direction extending at right angles to the vertical direction 8. The bottom part 9 and the side walls 7, 7 ′ have a U-shaped cross section extending in the lateral direction 8. The side walls 7, 7 are the bracket 1
The free end of the is projecting like a fork from the bottom 9 in the longitudinal direction 6.

At the free mounting end of the bracket 1, screw bolts 10 extend laterally 8 through the side walls 7, 7 '. The screw bolt 10 serves to attach the fixed end of the tying rope. Advantageously, the ends (not shown) of the lacing rope are configured in a loop. Of bracket 1,
Shaft side free ends 28, 28 'opposite to the mounting free ends
In the horizontal direction 8, a bolt-shaped shaft 4 extends through the bearing holes in the side walls 7, 7 '. The winding shaft 4 has two bolt halves 1
It consists of 1, 11 '. The bolt halves each have a substantially semi-circular cross section extending in the longitudinal direction 6. Due to these semi-circular cross sections, each bolt half 11,
At 11 ', a flat surface 12 extending in the lateral direction 8,
12 'and curved surfaces 13, 13' are produced. Bolt half 11,
11 'has flat surfaces 12, 12' facing each other, and a curved surface 1
The winding shafts 4 are configured so that the reference numerals 3 and 13 'face in opposite directions. The flat surfaces 12, 12 'are then spaced so that they do not touch each other, and a free space is formed between the two halves, which serves as an introduction slit 14.

Within the radius of the ratchet wheels 3, 3 ', there are teeth 33, respectively.
Are formed. A hole having a semicircular cross section is provided at the center of the ratchet wheels 3, 3 ', the straight portions of the holes face each other, and the curved portions of the semicircle face in opposite directions. The shape and dimensions of this semicircular hollow cross section substantially match the cross section of the bolt halves 11, 11 '. The bolt halves 11, 11 'pass through these holes in the ratchet wheels 3, 3'in the form of a loose fit. Claw wheel 3,
The reference numeral 3'is fixed to the winding shaft 4, and the side surface is in contact with the outside of the side walls 7, 7'in parallel.

At the same time, the hoisting shaft 4 also penetrates the fork-shaped bearing end of the tightening lever 2, so that the ratchet wheels 3,3 'are located outside the side walls 7,7' and inside the tightening lever side walls 15,15 '. It is supposed to be supported in the meantime. The winding shaft 4 is
To prevent it from slipping out in the lateral direction 8, it is stopped at the outside of the side walls 15, 15 'by a fixing pin 43 passing through the shaft 4 in the longitudinal direction 6, and at the same time the bracket 1 is tightened by the clamping lever 2
Is connected to exercise.

At the gripping end of the tightening lever 2 on the side opposite to the winding shaft 4, a handle 16 for bridging the side walls 15, 15 '.
Is installed. A horizontal connecting yoke 17 extending in the horizontal direction 8 between the side walls 15 and 15 'is attached approximately in the vertical direction between the handle 16 and the winding shaft 4. The yoke 17 has a U-shaped grip 1 of the drive slider 19 in the direction of the handle 16.
8 penetrates. The drive slider 19 extends in the gripping direction 20. This gripping direction is a direction that is determined by using one end point as a winding shaft and the other end point 16 as a handle. A centering bar 21 projects from the drive slider 19 in the direction of the handle 16, that is, in the gripping direction 20. The centering bar 21 is surrounded by a spiral spring member, that is, a coil spring 22. The coil spring 22 presses the drive slider 19 in the gripping direction 20, that is, in the direction of the winding shaft 4 by its spring force, and the lateral connection yoke 17 at that time.
Will serve as a response.

The drive slider 19 has a side wall 1 in the lateral direction 8.
It penetrates through guide slits 23, 23 'provided at 5, 15' and is supported so as to be vertically movable in the gripping direction 20 in the slits 23, 23 '. The slits 23, 23 'extend in the gripping direction 20. The drive slider 19 includes a ratchet wheel 3,
Together with 3 ', a drive lock mechanism for rotationally driving the winding shaft 4 via the tightening lever 2 is formed.

A guide portion 24 is projected from the bracket bottom portion 9 in a dovetail shape at right angles to the vertical direction 6 and the horizontal direction 8. In the longitudinal direction 6, the guide part 24 has two bearing holes 25, 2
5'is open. In the bearing hole 25, an extension bar 26 of the locking slider 5, which extends substantially in the vertical direction 6, projects. An extension bar 26 'of the locking slider 5', which extends substantially in the longitudinal direction 6, projects into the bearing hole 25 '.

The locking sliders 5, 5'are positioned relative to each other in the form of two legs forming an acute angle. This acute-angled apex is
It almost coincides with the axis of rotation of the winding shaft 4. The distance between the two legs corresponds to one and a half times the tooth pitch P shown in FIG.
The locking sliders 5 and 5 ′ penetrate the side walls 7 and 7 ′ in the lateral direction 8 and are slidable in the longitudinal direction 6 in the guide slits 41 and 4 ′.
It is supported in 1 '/ 42, 42'. The guides 41, 41 '/ 42, 42' extending in the longitudinal direction 6 have side walls 7, 7 '.
Is formed in.

The guide portion 24 and the locking sliders 5 on both sides are provided.
Between each of the 5 ', a compression spring member, i.e.
Coil springs 27, 27 'surrounding the extension bars 26, 26'
Are arranged. The guide 24 serves as a counter for the springs 27, 27 'and the locking sliders 5, 5'are pressed by the spring force towards the ratchet wheels 3, 3'.

As shown in FIG. 2, the bracket side wall 7,
The circumference of the shaft-side free ends 28, 28 'of 7'has a shape divided into several parts. The circumferential cross-section of the shaft-side ends 28, 28 ', which extends transversely 8 in the region of the winding shaft 4, shows, firstly, in the region of the winding shaft 4, from the side of the locking sliders 5, 5'. The circle is curved so that the center of the circle coincides with the center of the ratchet wheels 3, 3'or the winding shaft 4.
The diameter of the locking region 29 of this quadrant is the tooth 3 of the ratchet wheels 3, 3.
It has a partial circle diameter that matches the base circle diameter df of 3. When the tightening lever 2 is moved in the tightening direction 30 away from the bracket 1 by the handle 16, the bracket 1
Position of about 80 ° is reached. The drive slider 19 then hits the clamping stop 31 at the end of the semicircular locking area 29. By moving the tightening lever 2 in the tightening direction 30, the winding shaft 4 is further rotated in the tightening direction 30 by about 1/4 rotation. Drive slider 1
When 9 hits the stopper 31, the tightening lever 2 has to be returned in the direction of the bracket 1 in the direction opposite to the tightening direction 30. In that case, the drive slider 19 slides at the front flank 32 of the tooth 33, which is rounded in the direction opposite to the clamping direction 30. At the same time, the locking slider 5,
One of the 5'locks the rear flank 34 of another tooth 33. The rear flank 34 extends substantially parallel to the radial line of the ratchet wheels 3 and 3'and has a linear shape. Claw wheel 3,
When 3'is driven further in the clamping direction 30 by the drive slider 19, the locking sliders 5, 5'slide at the front flank 32 of the tooth 33. At that time, the locking slider 5 and the locking slider 5 ′ are alternately arranged with the tooth pitch P of 1
After rotating in the tightening direction by a value of / 2, the rear flank 34 of the tooth 33 is locked. For the tightening operation, the drive slider 19 is reciprocated between the bracket 1 and the tightening stopper 31 via the tightening lever 2. This reciprocating motion is repeated until the winding shaft rotates many times, and the binding cord fixed in the introduction slit 14 of the shaft 4 is wound around the shaft 4 in multiple layers to obtain the required binding tension. Done.

To repeatedly loosen the tightened state, the driving slider 19 is tightened by the tightening lever 2 and the stopper 31 is tightened.
To move to. The U-shaped grip 18 then pulls the drive slider 19 out of the tooth in the gripping direction 20 and into a position in which it can be moved past the clamping stop 31. The circumference of the shaft-side free ends 28, 28 'is the locking area 2
9 has a dissociation region 35 adjacent to each other in the tightening direction 30. As shown in FIG. 3, the dissociation region 35 has a lateral direction of 8
Has a semi-circular cross section, and the cross section diameter is
It is larger than the tip circle diameter (da) of 3 '. This dissociation area 3
5 is limited by limiting stoppers 36, 36 '.

After the drive slider 19 is pulled up, the tightening lever 2 is further moved in the tightening direction 30. The coil spring 22 pushes the drive slider 19 into the dissociation zone 35, as shown in FIG. The slider 19 is
The end opposite to the U-shaped grip 18 is brought into contact with the dissociation zone 35,
It forms a sliding guide with the dissociation zone 35. At the same time, a disengagement protrusion 37 formed on the circumference of the bearing end of the tightening lever 2 and protruding from the tightening lever 2 in the gripping direction 20 is formed.
It contacts the locking sliders 5, 5 '. Drive slider 19
However, as shown in FIG. 5, when the limiting stopper 36 comes into contact, the disengagement projection 37 comes into contact with the end side of the locking slider 5 ′, whereby the slider 5 ′ is moved toward the guide portion 24. , The state in which the tooth 33 is locked is released. At the same time, the winding shaft 4 rotates in the direction opposite to the tightening direction 30 by a value corresponding to 1/2 of the pitch P, and the locking slider 5 is locked at the rear flank 34 of the tooth 33.

Then, as shown in FIG. 6, the drive slider 19 is moved to the position of the second limiting stopper 36 'via the tightening lever 2, and the disengaging projection 37 is moved.
The other locking slider 5 is contacted, and the slider 5 moves to the teeth 33
Is unlocked. Further, the hoisting shaft 4 is moved by the tension of the bundling rope to perform reverse rotation corresponding to 1/2 pitch, and the locking slider 5 ′ is again locked to the rear flank 34 of the tooth 33.

As shown by the double-headed arrow in FIG. 7, the reciprocating movement of the tightening lever 2 causes the locking sliders 5, 5 in the direction opposite to the tightening direction 30 and in the tightening direction 30.
By alternately locking the teeth 33 by 5 ', the tying cord is loosened stepwise. In order to unwind the strapping rope from the cargo without danger, the drive slider 19 is moved again via the U-shaped grip 18 in the direction of the handle 16, ie in the gripping direction 20,
The clamping lever 2 is pivoted further in the clamping direction 30 so that the bracket 1 and the clamping lever 2 have an opening angle of about 180 °, as shown in FIG. On the end side of the bracket 1, a locking groove 39 is formed in the circumferential portion of the shaft-side end portions 28, 28 'in the tightening direction 30 in parallel with the dissociation area 35. The drive slider 19 is at the 180 ° open position,
The rest groove 39 is locked. The locking sliders 5 and 5'are
In this open position, the control cams 40 additionally shaped in the gripping direction 20 on the bearing end circumferences of the side walls 15, 15 'are moved in the direction of the guides 24, so that both locking sliders 5, 5'are engaged. Are disengaged from the teeth 33.

FIGS. 1 to 8 show an embodiment of a tightening latch having a tooth pitch angle of 24 °.
This pitch angle corresponds to 15 teeth. The clamping latch, however, is also realized by means of an embodiment with a pitch angle of 33 ° (not shown). This pitch angle has 11 teeth
Equivalent to.

In principle, any other pitch angle can also be realized. When the pitch angle is large, the disengagement protrusion 37 has a small gradient, and thus the force required to disengage the locking sliders 5 and 5'is small. At the same time, as a result of the increased distance between the sliders 5, 5 ', the overall height of the clamping latch is increased.

On the other hand, when the pitch angle is small,
The gradient is large, which requires a large force to disengage the sliders 5, 5 '. At the same time, the mutual spacing of the sliders 5, 5'is reduced and the overall height of the clamping latch is reduced.

In the special form of the tightening latch shown in FIG. 9, the locking sliders 50, 50 'are curved. The drive slider 190 is similarly curved. The locking sliders 50, 50 'are mounted in curved guide slits 410, 420. Drive slider 1
90 is also mounted in the curved guide slit 230.

The engaging sliders 50 and 50 'are supported by the legs of the legged spring 270 at the ends opposite to the ratchet wheel 3, respectively. The spring 270 is arranged in the lateral direction 8. The spring 270 is in this case arranged between the concave sides of the sliders 50, 50 'in order to save space.

When the locking sliders 50, 50 'slide in the guide slits 410, 420 formed in the partial annular shape, they perform a swiveling motion, and this swiveling motion is a moving part in the vertical direction 6 and a height. It consists of a moving part in the direction 44. The height direction 44 is perpendicular to the vertical direction 6 and the horizontal direction 8. Locking sliders 50, 5 curved about a bending axis extending laterally 8 in the drawing plane of FIG.
0'is therefore the moving part in the vertical direction 6 and the height direction 4
The turning motion is synthesized from the motion part of FIG. The pivoting movement of the sliders 50, 50 'is such that it partially pivots around the leg spring 270. The movement of the drive slider 190 sliding in the curved guide slit 230 is similar to the movement of the locking sliders 50, 50 '. In this particular embodiment, the tightening latch has a large tooth pitch P, a small lead of the disengagement projection 37, and the overall height of the tightening latch is not too high.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a tightening latch of the present invention.

FIG. 2 is a schematic basic view showing a tightening process.

FIG. 3 is a schematic basic view of a lock mechanism when shifting from a locking region to a dissociation region.

FIG. 4 is a schematic diagram showing a basic structure when a lock mechanism is in a dissociation area.

FIG. 5 is a schematic basic view showing that the lock mechanism is in the most opened and relaxed position in the dissociation region.

FIG. 6 is a schematic basic view showing that the lock mechanism is in a more closed and relaxed position in the dissociation area.

FIG. 7 is a schematic basic view showing that the entire tightening latch is loosened stepwise in a dissociation region.

FIG. 8 is a principle schematic view of the entire latch in the fully open position with the clamping lever at an opening angle of 180 ° with respect to the bracket.

FIG. 9 is a side view of a special embodiment of a tightening latch with a bent locking slider.

[Explanation of symbols]

 1 Bracket 2 Tightening lever 3,3 'Claw wheel 4 Winding shaft 5,5' Locking slider 6 Vertical direction 7,7 'Bracket side wall 8 Lateral direction 9 Bracket bottom 10 Screw bolt 11, 11' Bolt half 12, 12 'Flat surface 13, 13' Semicircular surface 14 Introducing slit 15, 15 'Tightening lever side wall 16 Handle 17 Horizontal connecting yoke 18 U-shaped grip 19 Drive slider 20 Grip direction 21 Concentric bar 22 Coil spring 23, 23 'Slider guide slit 24 Guide part 25, 25' Bearing hole 26, 26 'Extension bar 27, 27' Coil spring member 28, 28 'Shaft side free end 29 Locking area 30 Tightening direction 31 Tightening stopper 32 Front flank 33 teeth 34 rear flank 35 dissociation region 36, 36 'limiting stopper 37 dissociation protrusion 38 bidirectional arrow 3 9 Locking groove 40 Control cam 41, 41 'Bracket guide slit 42, 42' Same as above 43 Fixing pin 44 Height direction 50, 50 'Curved locking slider 190 Curved drive slider 230 Curved guide slit 270 Leg spring 410, 420 Curved guide slit P Pitch of tooth (corner) df Diameter of base circle da Diameter of tip circle

Claims (23)

[Claims] 1. A tightening latch for a tying rope, which is rotatably supported on a bracket (1) and a tying shaft (4) rotatably supported on the hoisting axle (4). In addition, the tightening lever (2), which is a swing drive unit, the detachable lock mechanism that transmits the rotational drive between the tightening lever (2) and the winding shaft (4), and the bracket (1) and the winding shaft (4). And a lock mechanism which is also a detachable lock mechanism for preventing reverse rotation at the time of tightening. A) The winding shaft (4) is rotatable together, and the ratchet wheel (3, 3 ') for the lock mechanism is provided. ) And b) the tightening lever (2) is
A drive slider (19) capable of meshing with the ratchet wheel (3, 3 ') by the restoring pressure is supported, and c) the bracket (1) meshes with the ratchet wheel (3, 3') by the restoring pressure. Two possible locking sliders (5, 5 ') are supported by being displaced in the circumferential direction, and d) the tightening lever (2) is
A control cam (40) is retained around its bearing end, which control cam (40) serves to disengage the locking sliders (5, 5 ') together and the drive slider (19) is disengaged. If it is, the tightening direction (3
0) in which the locking sliders (5, 5 ') are loaded, e) the locking sliders (5, 5') are separated from each other in the bracket with effective mutual spacing in the direction of rotation. It is slidable in the guide portion (41, 41 ', 42, 42'), and f) is adjacent to the control cam (40) in the circumferential direction, and one of the two locking sliders (5, 5 ') is adjacent. A fastening latch for a tying cord, which is characterized in that a disengagement projection (37) for selectively removing the is formed. 2. The disengagement projection (37) is located on the circumference of the bearing end of the tightening lever, next to the control cam (40) in the tightening direction (30). The latch according to claim 1. 3. The tightening lever side walls (15, 15 ') are
They extend substantially parallel and project from the clamping lever (2) in a fork-like manner at the free end of the clamping lever (2), the side wall (15) being provided at the gripping end opposite the bearing end. Latch according to claim 1 or 2, characterized in that it is provided with a handle (16) which bridges, 15 ') laterally parallel to the winding shaft (4). 4. A transverse connecting yoke (17) is provided in the area between the bearing end and the gripping end, the clamping lever side wall (15,1).
5 ') are connected to each other by bridging, the yoke (17) having a hollow box shape and extending in the lateral direction (8),
Characterized by being open in the direction of the winding shaft (4),
The latch according to any one of claims 1 to 3. 5. The drive slider (19) has a side wall (15,
Spring pressure is applied to the connecting yoke (17) in the slider guide slits (23, 23 ') in 15'), and it is supported so as to be vertically slidable in the guide slits (23, 23 '). Moreover, the end of the drive slider opposite to the winding shaft (4) moves toward the yoke (17) toward the slider (1
5. Latch according to claim 4, characterized in that it has a U-shaped grip (18) for the longitudinal movement of 9). 6. Brackets (1) having oppositely facing free ends which are configured as forks, with a generally U-shaped cross section in the transverse direction (8) between the free ends of the brackets, This U-shaped leg portion forms a bracket side wall (7, 7 ') arranged substantially parallel to the longitudinal direction (6), and the U-shaped yoke portion is a bracket bottom portion (9). The latch according to any one of claims 1 to 5. 7. A threaded bolt (10) bridges transversely (8) through a bracket-mounting free end, preferably in the form of a loop, for mounting the fixed end of the tie rope. And also the winding shaft (4) is mounted in the bearing bore of the bracket side wall (7,7 ") at the shaft-side free end (28,28 ') opposite the mounting free end. 7. The latch according to claim 6, wherein 8. Two ratchet wheels (3, 3 ') are provided on the outside of the bracket side wall (7, 7') and on the tightening lever side wall (15, 3 ').
15. Latch according to any one of claims 1 to 7, characterized in that it is arranged between the inner side of 15 ') and is connected in a form-locking manner with the winding shaft (4). 9. A winding shaft (4) holds two ratchet wheels and has two bracket side walls and correspondingly two by virtue of having an axisymmetric arrangement with respect to a longitudinal central axis extending in the longitudinal direction (6). 9. Latch according to any one of claims 1 to 8, characterized in that one clamping lever side wall (15, 15 ') is provided. 10. The tightening lever (2) covers the bracket in the form of a lid in its rest position and also in the tightening direction (3) when the winding shaft (4) is rotationally driven.
0) can be pivoted to a position of 80 ° with respect to the bracket (1), in which case the drive slider (19) formally connects the locking teeth (33) of the ratchets (3, 3 ') by its end face. 10. Latch according to any one of the preceding claims, characterized in that it is locked in form. 11. A drive slider (19) locks a locking tooth (33) at a position of 80 ° of a tightening lever (2) while moving from a circumference of a shaft-side free end (28, 28 ′). 11. Latch according to claim 10, characterized in that it contacts a radially projecting clamping stop (31). 12. A locking tooth is provided by a drive slider (19) further pivoting the tightening lever (2) in the tightening direction (30) by more than 80 ° and moving vertically in the direction of the tightening lever handle (16). Latch according to claim 11, characterized in that it can be disengaged from the (33) and in this disengaged position the contact with the clamping stopper (31) can also be eliminated. 13. A circumferential area of the axial free end (28, 28 '), which adjoins the tightening stop (31) of the bracket (1) in the tightening direction (30), projects radially and this area is a claw. 13. Latch according to claim 12, characterized in that it is convexly circular so as to form a sliding guide on the end of the drive slider on the side of the vehicle (3, 3 '). 14. The drive slider (19) is disengaged from the locking tooth (33) at the same time as being brought into the inactive position by the side of the drive slider contacting the sliding guide. Latch. 15. The sliding guide forms a dissociation zone (35),
This area has two control stoppers (36, 3) that project radially from the axial free end circumference (28, 28 ').
Latch according to any one of claims 12 to 14, characterized in that it is bounded in the tightening direction (30) by 6 '). 16. Locking sliders (5, 5 ') are engaged with teeth (33) formed on a ratchet wheel (3, 3') at a tooth pitch (P) of each other. 6. A latch according to any one of claims 1 to 5, characterized in that 17. Locking sliders (5, 5 ') are oriented with respect to each other like an acute-angled leg and guide slits (41, 5') are provided.
41 '/ 42, 42') is slidably supported in the longitudinal direction, and the apex of the acute angle is substantially located on the rotation axis of the winding shaft (4) extending in the lateral direction (8).
The latch according to claim 16. 18. A first disengagement position between the tightening lever (2) and a lock mechanism acting between the bracket (1) and the winding shaft (4) is provided, whereby the drive slider (19) is restricted. 2. A contact with a stopper (36 '), characterized in that the disengagement projection (37) holds the locking slider (5) out of engagement with the locking tooth (33).
The latch according to any one of 5 to 17. 19. A second disengagement position between the tightening lever (2) and the lock mechanism acting between the bracket (1) and the winding shaft (4) is provided, whereby the drive slider (19) is restricted. 16. A contact according to claim 15, characterized in that the disengaging projection (37) holds the other locking slider (5 ') out of engagement with the locking tooth (33). 17. The latch according to any one of 17. 20. A step-type relaxation of the lacing cord is possible by alternately reciprocating the tightening lever (2) between the first disengaged position and the second disengaged position. The latch according to claim 18 or 19. 21. Latch according to claim 16 or 17, characterized in that one of the locking sliders (50, 50 ') is curved about a bending axis extending in the lateral direction (8). 22. Locking sliders (50, 50 ') and drive sliders (190) are curved in a partial annular shape and correspondingly partial annular guide slits (230, 410, 42).
22. Latch according to claim 21, characterized in that it is guided in 0). 23. The concave sides of the locking sliders (50, 50 ') face each other, and the leg springs (270) arranged between these sliders each have one locking slider (50, 50'). 23. Latch according to claim 22, characterized in that 50 ') can be fixed close to the legs of the spring for pressurization.