Belt fastening device

Abstract

To make it possible to easily adjust a fixing position on a fixed side of a belt and to prevent unintentional swinging of a fixed side handle with a winging side handle of a belt winding configuration.SOLUTION: A belt fixing configuration part R has: a fixed shaft 9 supported by a pair of support walls 3a; and a fixed side handle 8 supported by the fixed shaft 9 and swingable in a direction rising from a fixed posture K along a longitudinal direction of the support walls 3a. The fixed side handle 8 has: a belt loop part hanging part 8d for forming a loop by winding a belt fixed side part 4r that comes around an outer circumference of the fixed shaft 9, and then passing it back through the outer circumference of the fixed shaft 9 to form a double part; and a fixed locking member 10 locking onto the support walls 3a when the fixed side handle 8 is in the fixed posture K to maintain the fixed posture K. The fixed side handle 8 in the fixed posture K is arranged in a position overlapping with a winding side handle 7 in a retracted posture T.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a belt fastening device for fastening two free ends of a belt. [Background technology]

[0002] When transporting cargo on vehicles, ships, etc., belts with fasteners at the end (lashing belts), known as hook belts, rail belts, etc., are used to prevent the cargo from falling over. A belt fastening device is placed in the middle of two of these belts to fasten them together.

[0003] In addition, a belt (lashing belt) is wrapped around the luggage, and both ends of the belt are fastened with a belt fastening device.

[0004] The belt fastening device has a frame in which a pair of support walls are connected by a bottom plate, and a belt winding component that winds up the winding side of the belt is arranged on one longitudinal side of the frame, and a belt fixing component that fixes the fixed side of the belt is arranged on the other longitudinal side of the frame.

[0005] The winding side of the belt refers to the free end side of one of the belts in the case of two belts, or one of the ends of the belt in the case of one belt, and the fixed side of the belt refers to the free end side of the other belt in the case of two belts, or the other end side of the belt in the case of one belt.

[0006] In conventional belt fastening devices, the belt fixing component is made up of a single shaft rod, and the fixed side of the belt is wrapped around the shaft rod and sewn in place. However, this device has the problem that it is difficult to use because the fixing position of the fixed side of the belt cannot be changed.

[0007] A technique that can solve this problem is disclosed in Patent Document 1.

[0008] The fastener of Patent Document 1 comprises a fixing member for fixing one end of a belt, a tightening and fixing member for fixing the other end of the belt or one end of another belt in a tightened state, and a frame for supporting the fixing member and the tightening and fixing member. As the fixing member, a pair of first and second belt fixing shaft members are arranged at a distance from the tightening and fixing member so that the belt fixing axis of the tightening and fixing member and the axial longitudinal direction are approximately parallel to each other (Claim 1). [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Utility Model Registration No. 3150865 Summary of the Invention [Problem to be solved by the invention]

[0010] The fastener of Patent Document 1 has a pair of first and second belt fixing shaft members arranged at a distance from each other, so that the position of the fastening device relative to the transported object can be changed by loosening the belt from a tightened state and moving the belt portion wound around the first and second belt fixing shaft members. However, both the first and second belt fixing shaft members are supported by a frame, and it is very difficult to raise the arrangement direction from a direction parallel to the direction of the belt hanging on the second belt fixing shaft member to a vertical direction, so that it is difficult to loosen the belt from a tightened state. Therefore, although it is possible to adjust the fixing position at the fixed side of the belt, the adjustment operation is not easy.

[0011] An object of the present invention is to provide a belt fastening device that can solve such problems of the conventional technology.

[0012] The present invention aims to provide a belt fastening device in which a belt loop hanging portion is provided on a fixed side handle that swings relative to a fixed shaft, and the belt fixed side portion is wrapped around it, making it possible to easily adjust the fixed position of the belt on the fixed side, and also to prevent unintended swinging of the fixed side handle by the winding side handle of the belt winding component. [Means for solving the problem]

[0013] The specific means for solving the problem in the present invention is a frame 3 in which a pair of support walls 3a are connected by a bottom plate 3b, and a winding side portion 4m of a belt 4 is wound on one side of the frame 3 in the longitudinal direction. A belt fastening device in which a belt winding component M is arranged to fasten a fixed side portion 4r of the belt 4 to the other longitudinal side of the frame 3, The belt winding component M includes a winding shaft 5 supported by a pair of support walls 3a and winding the belt winding side portion 4m, and a winding side handle 7 rotatably supported by the winding shaft 5 and pivoting in a rising direction from a retreated position T along the longitudinal direction of the support walls 3a to rotate the winding shaft 5 in the winding direction via a ratchet mechanism 6. The belt fixing component R has a fixed shaft 9 supported by a pair of support walls 3a, and a fixed-side handle 8 supported by the fixed shaft 9 and capable of swinging in a rising direction from a fixed position K along the longitudinal direction of the support walls 3a, The fixed side handle 8 has a belt loop hook 8d that wraps around the fixed side portion 4r of the belt passing through the outer periphery of the fixed shaft 9 to form a loop portion and then passes it again around the outer periphery of the fixed shaft 9 to form a double portion, and a fixed engaging member 10 that engages with the support wall 3a when the fixed side handle 8 is in the fixed position K to maintain the fixed position K, The fixed side handle 8 in the fixed position K is disposed at a position where it overlaps with the winding side handle 7 in the retracted position T. Effect of the Invention

[0014] According to the present invention, in a belt fastening device in which a belt winding component M and a belt fixing component R are arranged, the fixed position of the fixed side portion 4r of the belt 4 can be easily adjusted by operating the fixed side handle 8, and unintentional swinging of the fixed side handle 8 can be prevented. [Brief description of the drawings]

[0015] [Figure 1] 1 is a cross-sectional front view showing an embodiment of the present invention. [Diagram 2] FIG. 13 is a perspective view of the take-up side handle when it is swung. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. 13 is a sectional front view of the stationary handle when it is swung. [Figure 6] FIG. 13 is a perspective view showing a state in which the fixed side handle is swung. [Figure 7] FIG. [Figure 8] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0017] In Figures 1 to 8, a belt fastening device 1 that fastens two free ends of a belt has a belt winding component M that winds up a winding side 4m of a belt 4 on one longitudinal side of a frame 3, and a belt fixing component R that fixes a fixed side 4r of the belt 4 on the other longitudinal side of the frame 3.

[0018] When transporting luggage, as shown by solid lines in Figures 1 and 5, two belts 4 each having a fastening device H at its tip are prepared, and the end of one of the belts 4 is connected to the belt winding component M of the belt fastening device 1 as the winding side part 4m, and the end of the other belt 4 is connected to the belt fixing component R as the fixed side part 4r.

[0019] When bundling multiple items of luggage for transportation, as shown by virtual lines in Figures 1 and 5, a single belt 4 is wound around the multiple items of luggage in a loop shape, and one end of the belt 4 is connected to a belt winding component M as a winding side part 4m, and the other end is connected to a belt fixing component R as a fixed side part 4r.

[0020] The frame 3 is formed by stamping sheet metal with two sides raised and a pair of support walls 3a connected by a bottom plate 3b. A circular expanding support section is formed on one longitudinal side of the pair of support walls 3a for rotatably supporting the winding shaft 5 of the belt winding component M. Openings p1, p2 are formed in the bottom plate 3b for inserting the fixed side 4r of the belt 4. These openings p1, p2 form a support section 3d for the ratchet lock body 13 of the belt winding component M and receiving sections s1, s2 against which the fixed side 4r of the belt 4 comes into contact.

[0021] The belt winding component M includes a winding shaft 5 supported by a pair of support walls 3a and winding up the belt winding side portion 4m, and a belt winding member 4b that is rotatably supported by the winding shaft 5 and extends along the longitudinal direction of the support walls 3a. The reel has a winding-side handle 7 which rotates the winding shaft 5 in the winding direction via a ratchet mechanism 6 by swinging in the rising direction from the retracted position T.

[0022] The winding shaft 5 has a shape in which two rods having a substantially semicircular cross section are fixed facing each other with a gap therebetween, and the gap forms a belt insertion passage 5a through which the winding side portion 4m of the belt 4 is inserted and wound.

[0023] The leading end of the take-up side 4m of the belt 4 is wound around one semicircular bar and passed through the belt insertion passage 5a, and then wound around the other semicircular bar and overlapped with the subsequent portion of the take-up side 4m to form a double portion. Because this double portion of the take-up side 4m is pressed against the take-up shaft 5, when the take-up shaft 5 is rotated, the take-up side 4m is wound around its outer periphery.

[0024] The ratchet mechanism 6 of the belt winding component M includes a ratchet wheel 11 attached to the winding shaft 5, a winding engagement body 12 which is movably mounted on the winding side handle 7 and which advances to engage with the ratchet wheel 11 to rotate the winding shaft 5 by swinging the winding side handle 7, and a ratchet lock body 13 which is movably mounted on a pair of support walls 3a and advances to engage with the ratchet wheel 11 to prevent its rotation in the rewinding direction.

[0025] The winding-side handle 7 has a grip portion 7a for swinging operation on the free end side, and the state shown by solid lines in Fig. 1 and by virtual lines in Figs. 3 and 4 is the retracted position T, and when the grip portion 7a is gripped and swung (swinged counterclockwise in Fig. 1) from this retracted position T to raise it up, the engagement claw 12a of the winding engagement body 12 engages with the ratchet claw of the ratchet wheel 11, rotating the ratchet wheel 11 and the winding shaft 5 together. The winding-side handle 7 can be swung to the positions shown by virtual lines in Fig. 1 and by solid lines in Figs. 2 to 8.

[0026] The length of the winding handle 7 from the support portion for the winding shaft 5 to the portion where the grip portion 7a is disposed is approximately equal to the longitudinal length of the frame 3, and the belt fixing component R is also disposed within this range.

[0027] The winding engagement body 12 is supported in a guide groove 21 of the winding side handle 7 so as to be movable forward and backward, and is biased by a spring 22 (biasing means) in a direction in which it advances to and engages with the ratchet wheel 11.

[0028] When the winding side handle 7 is swung clockwise from the imaginary line position (winding-up position) in Figure 1, the engagement claw 12a of the winding engagement body 12 rides up without engaging with the ratchet claw of the ratchet wheel 11, so that the ratchet wheel 11 and the winding shaft 5 return to the retracted position T without rotating.

[0029] When the winding side portion 4m is to be wound up by the winding shaft 5, the winding side handle 7 is swung within a range from the winding position to a position just before the retracted position T to rotate the winding shaft 5.

[0030] The ratchet lock body 13 has a locking pawl 13a that engages with the ratchet pawl of the ratchet wheel 11, is supported by a support portion 3d of the frame 3 so as to move forward and backward relative to the ratchet wheel 11, and is biased by a spring 24 (biasing means) in a direction in which it advances to and engages with the ratchet wheel 11. The ratchet lock body 13 prevents the ratchet wheel 11 and the winding shaft 5 from rotating back.

[0031] The ratchet lock body 13 has a finger hook at the front, which can be hooked with a finger and moved back to a position where it can be disengaged from the ratchet wheel 11. A guide portion 13c is provided at the rear of the ratchet lock body 13, and is supported by a support protrusion 3d that rises from the bottom plate 3b of the support wall 3a, and the spring 24 is provided between this guide portion 13c and the support protrusion 3d.

[0032] When the ratchet wheel 11 is retracted by the ratchet lock body 13 to release the prevention of return rotation, it becomes free to rotate relative to the frame 3 and the winding side handle 7, allowing the winding shaft 5 to rotate freely and the winding side portion 4m of the belt 4 to be pulled and removed from the winding shaft 5.

[0033] The belt fixing component R has a fixed shaft 9 supported by a pair of support walls 3a of the frame 3, and a fixed side handle 8 supported by this fixed shaft 9 and swinging in an upward direction from a fixed position K along the longitudinal direction of the support wall 3a (swinging counterclockwise from the position shown by the solid line in Figure 1).

[0034] The fixed side handle 8 is provided by a pair of side plate portions 8 located inside the pair of support walls 3a of the frame 3. The base ends of the pair of side plate portions 8b are rotatably supported on a fixed shaft 9, the middle portions are connected to a belt loop hook portion 8d, and the free ends are connected to a grip portion 8a.

[0035] The fixed side handle 8 has a fixed locking member 10 arranged on the back side of the grip portion 8a so that it can move back and forth, and a guide groove 8c is formed on the free end side of the pair of side plate portions 8b to support the fixed locking member 10 so that it can slide in the engagement and disengagement operation direction.

[0036] The belt loop hook portion 8d is used to wrap the fixed side portion 4r of the belt 4 around it. The fixed side portion 4r passes around the outer periphery of the fixed shaft 9 and is then wrapped around the belt loop hook portion 8d to form a loop. It is then passed around the outer periphery of the fixed shaft 9 again to form a double portion of the fixed side portion 4r. This double portion is pressed against the fixed shaft 9, and its position is fixed relative to the fixed shaft 9.

[0037] In addition, a biasing member 18 is provided between the back surface of the gripping portion 8a and the operating portion 10a of the fixed locking member 10, which biases the fixed locking member 10 in a direction to lock it to the support wall 3a. The locking recess 3e in which the fixed locking member 10 is locked is formed by forming the ends of the pair of support walls 3a into a hook shape.

[0038] The grip portion 8a of the fixed side handle 8 has a surface 15 that faces the grip portion 7a of the winding side handle 7 in the retracted position T, and a recess 16 that exposes the operating portion 10a for engaging and disengaging the fixed engaging member 10 on the surface 15 side.

[0039] When a finger is pressed against the operating portion 10a exposed from the recess 16 of the grip portion 8a and the operating portion 10a is pushed toward the fixed shaft 9 against the force of the biasing member 18, the fixed locking member 10 is released from its locked state in the locking recess 3e, allowing the fixed side handle 8 to be raised and swung from the fixed position K.

[0040] When the fixed side portion 4r of the belt 4 is connected and fixed within the belt fixing component R, the fixed side handle 8 is raised and swung from the fixed position K to a position near the take-up shaft 5 as shown by the solid line in FIG.

[0041] The fixed side portion 4r is then passed through the opening p1 from above the receiving portion s1 of the frame 3, abutted against the underside of the receiving portion s2, and then extended below the fixed shaft 9. The fixed side portion 4r passes under the fixed shaft 9 and is then wound around the belt loop hook portion 8d. After that, it is passed between the fixed shaft 9 and the previously passed portion, forming a double portion of the fixed side portion 4r on the outer periphery of the fixed shaft 9.

[0042] Thereafter, when the fixed side handle 8 is swung to the fixed position K, the first passed portion of the fixed side portion 4r, which is doubled around the outer periphery of the fixed shaft 9, presses the second passed portion against the fixed shaft 9, fixing the belt longitudinal position. Then, the fixed locking member 10 is locked in the locking recess 3e, and the fixed position K of the fixed side handle 8 is maintained.

[0043] The fixing position of the fixed side portion 4r of the belt 4 within the belt fixing component R is adjusted by opening the fixed side handle 8 close to the take-up shaft 5 and pulling and moving the earlier or later passed part of the fixed side portion 4r that passes under the fixed shaft 9.

[0044] With the fixed side handle 8 in the fixed position K and the fixed side portion 4r of the belt 4 fixed, the take-up side portion 4m of the belt 4 is wound and connected at the belt take-up component M. To wind up the take-up side portion 4m, the take-up side handle 7 is raised from the retracted position T and swung back and forth to rotate the take-up shaft 5 in the take-up direction.

[0045] After the winding connection of the winding side portion 4m is completed, the winding side handle 7 is brought into a retracted position T along a pair of support walls 3a of the frame 3, and this retracted position T overlaps with the fixed side handle 8 in the fixed position K, i.e., it covers it closely.

[0046] In addition, the length of the winding side handle 7 is approximately equal to the longitudinal length of the frame 3, and the belt winding component M and the belt fixing component R are arranged within one frame 3, giving the belt fastening device 1 a compact configuration.

[0047] In the embodiment described above, the belt fastening device has a frame 3 in which a pair of support walls 3a are connected by a bottom plate 3b, a belt winding component M for winding up a winding side portion 4m of a belt 4 is arranged on one side of the frame 3 in the longitudinal direction, and a belt fixing component R for fixing a fixed side portion 4r of the belt 4 is arranged on the other side of the frame 3 in the longitudinal direction. The belt winding component M is supported by the pair of support walls 3a and includes a winding shaft 5 for winding up the belt winding side portion 4m, and a belt fixing component R for fixing a fixed side portion 4r of the belt 4. and a winding-side handle 7 supported by the pair of support walls 3a and swinging in the rising direction from a retracted position T along the longitudinal direction of the support wall 3a to rotate the winding shaft 5 in the winding direction via the ratchet mechanism 6. The belt fixing component R has a fixed shaft 9 supported by the pair of support walls 3a and a fixed-side handle 8 supported by the fixed shaft 9 and capable of swinging in the rising direction from a fixed position K along the longitudinal direction of the support wall 3a. The fixed-side handle 8 has a belt loop portion hooking portion 8d that wraps around the belt fixed side portion 4r passing through the outer periphery of the fixed shaft 9 to form a loop portion and passes it again around the outer periphery of the fixed shaft 9 to form a double portion, and a fixed locking member 10 that locks with the support wall 3a when the fixed-side handle 8 is in the fixed position K to hold the fixed position K. The fixed-side handle 8 in the fixed position K is disposed at a position where it overlaps with the winding-side handle 7 in the retracted position T.

[0048] With this configuration, in a belt fastening device in which a belt winding component M and a belt fixing component R are arranged, the fixed position of the fixed side portion 4r of the belt 4 can be easily adjusted by operating the fixed side handle 8, and furthermore, the winding side handle 7 can prevent unintended swinging of the fixed side handle 8.

[0049] In addition, in the above embodiment, the winding side handle 7 has a grip portion 7a for swinging operation on its free end side, and the fixed side handle 8 has a grip portion 8a for swinging operation on its free end side, and the fixed engaging member 10 is arranged on the back side of this grip portion 8a.

[0050] With this configuration, the grip portion 7a of the winding-side handle 7 can reliably prevent an unintentional release operation of the fixed engaging member 10.

[0051] Furthermore, in the embodiment, the grip portion 8a of the fixed side handle 8 has a surface 15 that faces the grip portion 7a of the winding side handle 7 in the retracted position T, and a recess 16 that exposes the operating portion 10a for engaging and disengaging the fixed engaging member 10 on the surface 15 side.

[0052] This configuration prevents unintended swinging of the fixed side handle 8, while making the presence of the fixed engaging member 10 clear, facilitating normal operation of the fixed side handle 8.

[0053] Furthermore, in the embodiment, a biasing member 18 is provided between the back surface of the grip portion 8a of the fixed side handle 8 and the operating portion 10a of the fixed locking member 10, which biases the fixed locking member 10 in a direction to lock it to the support wall 3a.

[0054] With this configuration, the fixed locking member 10 can be easily configured.

[0055] In addition, in the above embodiment, the fixed side handle 8 has a pair of side plate portions 8b, the base ends of which are rotatably supported on the fixed shaft 9, the middle portions are connected by a belt loop hook portion 8d, and the free end side is connected by a grip portion 8a. A guide groove 8c is formed on this free end side to slidably support the fixed locking member 10 in the locking / releasing operation direction.

[0056] With this configuration, the fixed side handle 8 can be configured simply.

[0057] Furthermore, in the above embodiment, the winding shaft 5 has a belt insertion passage 5a through which the winding side portion 4m of the belt 4 is inserted and wound, and the ratchet mechanism 6 of the belt winding component M has a ratchet wheel 11 attached to the winding shaft 5, a winding engagement body 12 which is movable back and forth on the winding side handle 7 and which advances to engage with the ratchet wheel 11 to rotate the winding shaft 5 by swinging the winding side handle 7, and a ratchet lock body 13 which is movable back and forth on a pair of support walls 3a and advances to engage with the ratchet wheel 11 to prevent its rotation in the rewinding direction.

[0058] With this configuration, the belt winding component M can be easily configured.

[0059] The present invention is not limited to the above-described embodiment, and the shape, configuration, and combination of the members can be changed.

[0060] For example, the belt loop hook portion 8d of the fixed handle 8 is formed by folding a plate portion in half, but it may be formed of a pin or a bar material.

[0061] The biasing member 18, which biases the fixed locking member 10 in the direction of engaging it with the support wall 3a, is provided between the back surface of the gripping portion 8a and the operating portion 10a of the fixed locking member 10, but a spring may be disposed between the fixed locking member 10 and the fixed side handle 8. [Explanation of symbols]

[0062] 1 Belt fastening device 3 Frame 3a supporting wall 3b Bottom plate 3d support part 3e Locking recess 4 Belt 4m Winding side 4r Fixed side 5 Winding shaft 5a Belt passage 6 Ratchet mechanism 7 Winding handle 7a Grip 8 Fixed side handle 8a Grip 8b Side plate part 8c Guide groove 8d Belt loop hook 9 Fixed axis 10 Fixed locking member 10a Operation section 11 Ratchet Wheel 12 Winding engagement body 12a Engagement claw 13 Ratchet lock body 15 Surface 16 Recess 18 Pressing member H Locking device K Fixed posture M Belt winding component R Belt fixing components T Retreat position

Claims

1. A belt fastening device having a frame (3) in which a pair of support walls (3a) are connected by a bottom plate (3b), a belt winding component (M) for winding a winding side portion (4m) of a belt (4) is disposed on one longitudinal side of the frame (3), and a belt fixing component (R) for fixing a fixing side portion (4r) of the belt (4) is disposed on the other longitudinal side of the frame (3), The belt winding component (M) has a winding shaft (5) supported by a pair of support walls (3a) and winding up the belt winding side portion (4m), and a winding side handle (7) rotatably supported by the winding shaft (5) and pivoting in a rising direction from a retracted position (T) along the longitudinal direction of the support walls (3a) to rotate the winding shaft (5) in the winding direction via a ratchet mechanism (6). The belt fixing component (R) has a fixed shaft (9) supported by a pair of support walls (3 a), and a fixed-side handle (8) supported by the fixed shaft (9) and capable of swinging in a rising direction from a fixed position (K) along the longitudinal direction of the support walls (3 a), The fixed side handle (8) has a belt loop hook (8d) which wraps around the fixed side portion (4r) of the belt passing through the outer periphery of the fixed shaft (9) to form a loop portion and then passes it again around the outer periphery of the fixed shaft (9) to form a double portion, and a fixed engaging member (10) which engages with the support wall (3a) when the fixed side handle (8) is in the fixed position (K) to maintain the fixed position (K), A belt fastening device characterized in that the fixed side handle (8) in the fixed position (K) is arranged at a position where it overlaps with the winding side handle (7) in the retracted position (T).

2. The winding handle (7) has a grip portion (7a) for swinging operation at its free end, The belt fastening device according to claim 1, characterized in that the fixed side handle (8) has a grip portion (8a) for swinging operation on the free end side, and the fixed engaging member (10) is arranged on the back side of this grip portion (8a).

3. The belt fastening device according to claim 2, characterized in that the gripping portion (8a) of the fixed side handle (8) has a surface (15) that faces the gripping portion (7a) of the winding side handle (7) in the retracted position (T), and a recess (16) that exposes an operating portion (10a) for engaging and disengaging the fixed engaging member (10) on the surface (15) side.

4. The belt fastening device according to claim 3, characterized in that a biasing member (18) is provided between the back surface of the grip portion (8a) of the fixed side handle (8) and the operating portion (10a) of the fixed engaging member (10) for biasing the fixed engaging member (10) in a direction to engage with the support wall (3a).

5. The belt fastening device according to claim 2 or 3, characterized in that the fixed side handle (8) has a pair of side plate portions (8b), the base ends of which are rotatably supported on a fixed shaft (9), the middle portions of which are connected by a belt loop hook portion (8d), and the free ends of which are connected by a grip portion (8a). A guide groove (8c) is formed on the free end side to slidably support the fixed locking member (10) in the locking / releasing operation direction.

6. The winding shaft (5) has a belt insertion passage (5a) through which the winding side portion (4m) of the belt (4) is inserted and wound, The ratchet mechanism (6) of the belt winding component (M) has a ratchet wheel (11) attached to the winding shaft (5), a winding engagement body (12) that is provided on the winding side handle (7) so as to be movable forward and backward and engages with the ratchet wheel (11) by advancing to rotate the winding shaft (5) by swinging the winding side handle (7), and a ratchet lock body (13) that is provided on a pair of support walls (3a) so as to be movable forward and backward and engages with the ratchet wheel (11) by advancing to prevent rotation in the unwinding direction. The belt fastening device according to claim 1.

Images