US20080189921A1 - Belt Fastening Device - Google Patents

Belt Fastening Device Download PDF

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Publication number
US20080189921A1
US20080189921A1 US11/912,464 US91246405A US2008189921A1 US 20080189921 A1 US20080189921 A1 US 20080189921A1 US 91246405 A US91246405 A US 91246405A US 2008189921 A1 US2008189921 A1 US 2008189921A1
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US
United States
Prior art keywords
belt
shaft
latch
wheel member
handle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/912,464
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English (en)
Inventor
Motoharu Tomosue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ashimori Industry Co Ltd
Original Assignee
Ashimori Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ashimori Industry Co Ltd filed Critical Ashimori Industry Co Ltd
Assigned to ASHIMORI INDUSTRY CO., LTD. reassignment ASHIMORI INDUSTRY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TOMOSUE, MOTOHARU
Publication of US20080189921A1 publication Critical patent/US20080189921A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P7/00—Securing or covering of load on vehicles
    • B60P7/06—Securing of load
    • B60P7/08—Securing to the vehicle floor or sides
    • B60P7/0823—Straps; Tighteners
    • B60P7/083—Tensioning by repetetive movement of an actuating member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P7/00—Securing or covering of load on vehicles
    • B60P7/06—Securing of load
    • B60P7/08—Securing to the vehicle floor or sides
    • B60P7/0823—Straps; Tighteners
    • B60P7/0846—Straps; Tighteners winding up or storing of straps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D63/00—Flexible elongated elements, e.g. straps, for bundling or supporting articles
    • B65D63/10—Non-metallic straps, tapes, or bands; Filamentary elements, e.g. strings, threads or wires; Joints between ends thereof
    • B65D63/14—Joints produced by application of separate securing members
    • B65D63/16—Joints using buckles, wedges, or like locking members attached to the end of the element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/21—Strap tighteners

Definitions

  • the present invention relates to a belt tightener used for, for example, fixing a load on a truck or the like.
  • a general ratchet type belt tightener includes a belt take-up shaft that takes up belts, a ratchet gear provided with this belt take-up shaft at a center portion so as to penetrate therethrough and formed with a gear portion therearound, a latch pawl that is engageably urged against the gear portion of the ratchet gear so as to turn the ratchet gear in only one direction, and a handle that is capable of turning the belt take-up shaft in a wind-tightening direction.
  • a belt take-up mechanism of this belt tightener includes a belt take-up shaft supported about an axis on a body frame, a handle supported about an axis on the body frame so as to be coaxial with the belt take-up shaft, a first one-way clutch and a second one-way clutch fixed to both end portions of the belt take-up shaft, respectively, and set in identical directions in terms of a slipping state and a meshing state, a first latch provided on the handle and engageable with and disengageable from an outer wheel member of the first one-way clutch, and a second latch provided on the body frame and engageable with and disengageable from an outer wheel member of the second one-way clutch.
  • the handle When performing a drawing operation of belts by this belt tightener, while the first latch is engaged with the first one-way clutch and the second latch is engaged with the second one-way clutch, first, the handle is turned in a direction where both one-way clutches reach a slipping state. At this time, in the first one-way clutch, the outer wheel member turns in conjunction with the handle and the first latch, however, this turn of the outer wheel member is not transmitted to an inner wheel member through which the belt take-up shaft is inserted, so that the belt take-up shaft does not turn.
  • Patent Document 1 Japanese Published Unexamined Patent Application No. 2003-222198
  • the belt tightener in a belt tightener to whose one end portion and other end portion a first belt and a second belt are coupled, respectively, and which produces and releases tension for these belts, the belt tightener has: a body frame; and a belt take-up mechanism provided at one end portion of the body frame and is capable of taking up and unwinding the first belt, the belt take-up mechanism includes: a belt take-up shaft which is supported about an axis on the body frame and by which the first belt is taken up; a handle supported about an axis on the body frame so as to be coaxial with the belt take-up shaft; a first one-way clutch and a second one-way clutch both provided on the belt take-up shaft and set in identical directions in terms of a slipping state and a meshing state; a first latch provided so as to be relatively movable on the handle and engageable with and disengageable from the first one-way clutch while being urged to the belt take-up shaft side; and
  • the cover plates on both side surfaces of the inner wheel member the outer wheel member has been prevented from coming off from the inner wheel member, and the inner wheel member, outer wheel member, and two cover plates have been integrally formed, whereby the one-way clutch has been unitized, and thus even if the first one-way clutch is distorted, the one-way clutch can be easily replaced.
  • a fixing portion of the inner wheel member and the cover plate is protruded from a surface of the cover plate, and a gap exists between the handle and the cover plate. And thus, for the reason that the fixing portion is protruded from the cover plate so that a gap is formed between the cover plate and handle, the one-way clutch is less likely to contact the handle, so that it becomes possible to turn the handle smoothly.
  • a corner on one side surface of the outer wheel member is formed round.
  • the space portion between the outer wheel member and the inner wheel member is formed so that its gap is enlarged along a circumferential direction, in the space portion, a roller member having a diameter equal to the gap at a circumferential middle portion thereof and a coil spring that urges this roller member in a contracting direction of the gap of the space portion, the roller member is formed in a columnar shape having a length almost equal to a thickness of the inner wheel member, and a shape of the coil spring viewed from its expanding and contracting direction is an oval shape.
  • the roller member has been formed in a columnar shape having a length almost equal to a thickness of the inner wheel member, in comparison with when the roller member is in a spherical shape, a contact area of the roller member between the inner wheel member and outer wheel member is increased, so that even with a roller member having a relatively small diameter, it becomes possible to transmit a large load. Accordingly, the diameter of the roller member is reduced to the utmost extent allowing transmitting a necessary load so that the outside diameter of the outer wheel member can be reduced as much as possible. Consequently, it becomes possible to turn the outer wheel member by a smaller force, and this allows taking up the belts more easily.
  • the first latch has a flat plate portion that extends parallel to its moving direction, a slope portion that extends to a side opposite the belt take-up shaft in a state inclined with respect to the flat plate portion, and a pull portion provided at an end portion of this slope portion on the side opposite the belt take-up shaft, and the pull portion is located on a plane extended from the flat plate portion to the side opposite the belt take-up shaft. Accordingly, pulling the pull portion allows moving the first latch to the side opposite the belt take-up shaft, so that it becomes easy to release a meshing state with the first one-way clutch.
  • the pull portion is located on a plane extended from the flat plate portion to the side opposite the belt take-up shaft. Accordingly, since the first latch linearly moves in the direction of a force applied to the pull portion, it becomes possible to move the first latch by a smaller force.
  • the handle has two handle support plates arranged symmetrically at both end portions of the belt take-up shaft, and a grasping member provided at end portions of these two handle support plates on a side opposite the belt take-up shaft, the first latch is supported so as to be relatively movable on the two handle support plates, and on a surface of the first latch, formed are two first convex portions that guide a relative movement with respect to the two handle support plates. And thus, since a relative movement of the first latch with respect to the handle support plates is guided by the two first convex portions, it becomes easier to move the first latch, so that operability is improved. In addition, since rattling can be prevented even without strict control of machining accuracy of the first latch and the handle support plates, there is also an advantage in the aspect of a component cost.
  • the body frame has two frame plates that support both end portions of the belt take-up shaft about axes, respectively, the second latch is supported so as to be relatively movable on the two frame plates, and on a surface of the second latch, formed are two second convex portions that guide a relative movement with respect to the two frame plates. And thus, since a relative movement of the second latch with respect to the frame plates is guided by the two second convex portions, it becomes easier to move the second latch, so that operability is improved. In addition, since rattling can be prevented even without strict control of machining accuracy of the second latch and the frame plates, there is also an advantage in the aspect of a component cost.
  • a belt tightener in the seventh aspect of the invention, in the two frame plates, slits through which the second latch is inserted are formed, respectively, further, in at least one of the frame plates, continuously from the slit, formed is a notch portion through which the second convex portion of the second latch can be inserted, and in a state where the second latch has been inserted through the slits of the two frame plates and supported, the notch portion and the second convex portion are displaced in terms of a moving direction of the second latch.
  • the second latch is inserted through the slits respectively formed in the two frame plates and is supported.
  • the second convex portion is inserted through the notch portion continuous from the slit and is arranged inside the two frame plates.
  • the second latch since the positional relationship between the second convex portion of the second latch after having been fitted to the body frame and notch portion is displaced in terms of the moving direction of the second latch, the second latch is latched by the second convex portion, whereby the second latch is prevented from coming off from the slit after fitting.
  • a belt tightener of the present embodiment includes a body frame 3 to whose one and other longitudinal end portions of a first belt 1 and a second belt 2 are coupled, respectively.
  • the body frame 3 includes flat plate-like frame plates 4 and 4 in left and right pairs widthwise. The distance between these frame plates 4 and 4 is set to a distance greater than the width of the first and second belts 1 and 2 .
  • a belt take-up mechanism 5 capable of taking up the first belt 1 in one direction.
  • the belt take-up mechanism 5 has a belt take-up shaft 7 whose both end portions are freely rotatably supported about an axis on the frame plates 4 and 4 , and first and second one-way clutches 8 and 9 provided on both end portions of this belt take-up shaft 7 .
  • the belt take-up shaft 7 is composed of a pair of shaft members 7 a and 7 b having almost semicircular sectional shapes, and these shaft members 7 a and 7 b are coupled and fixed at both end portions by latching members 15 .
  • the first and second one-way clutches 8 and 9 each have an inner wheel member 11 through which the belt take-up shaft 7 has been inserted, an outer wheel member 10 externally fitted to this inner wheel member 11 so as to be freely slidable, a plurality of space portions 12 formed between the outer wheel member 10 and inner wheel member 11 so that the gap is gradually enlarged along a circumferential direction (clockwise in FIG.
  • a roller member 13 provided in each space portion 12 and having a diameter equal to the gap of a circumferential middle portion thereof, a coil spring 14 provided in each space portion 12 and is arranged at a moving side (enlarging side of the gap) of the roller member 13 to urge the roller member 13 in a contracting direction (arrow direction A in FIG. 4 ) of the gap of the space portion 12 , and two cover plates 16 and 16 respectively fixed to both side surfaces of the inner wheel member 11 so as to cover the space portion 12 .
  • a pair of shaft member through-holes 11 b and 11 b are formed symmetrical with respect to a partition portion 11 a .
  • the above-mentioned shaft members 7 a and 7 b are passed, respectively, and the shaft members 7 a and 7 b are securely coupled to the inner wheel member 11 in the rotating direction.
  • a large number of concave portions 10 a and convex portions 10 b are formed alternately in the circumferential direction.
  • the roller member 13 is formed in a columnar shape having a length almost equal to the thickness of the inner wheel member 11 , and the shape of the coil spring 14 viewed from its expanding and contracting direction (left-hand side of FIG. 8 ) is an oval shape. Therefore, in comparison with when the roller member 13 is in a spherical shape, a contact area of the roller member 13 with the inner wheel member 11 and outer wheel member 10 is large, so that even with a roller member 13 having a relatively small diameter, it becomes possible to transmit a large load between the inner wheel member 11 and outer wheel member 10 .
  • the diameter of the roller member 13 is reduced to the utmost extent allowing transmitting a necessary load so that the outside diameter of the outer wheel member 10 can be reduced as much as possible, whereby the force when turning the outer wheel 10 with the handle 20 to be described later can be reduced.
  • each cover plate 16 is clamped by rivets 17 and fixed to the inner wheel member 11 , in a surrounding part of the through-hole 16 a , at five positions apart at equal intervals in the circumferential direction. Also, as shown in FIG. 10 , each rivet 17 is protruded from the surfaces of the cover plates 16 .
  • the two cover plates 16 and 16 have outside diameters larger than the inside diameters of the outer wheel members 10 , respectively. Therefore, the two cover plates 16 and 16 serve, as shown in FIG. 10 , functions to reinforce the outer wheel member 10 from both sides as well as to block up the space portions 12 so that the rollers 13 and coil springs 14 disposed in the space portions 12 do not pop out outside.
  • the cover plates 16 and 16 on both side surfaces of the inner wheel member 11 the outer wheel member 10 is prevented from coming off from the inner wheel member 11 , and for the first and second one-way clutches 8 and 9 , the outer wheel member 10 , inner wheel member 11 , roller members 13 , coil springs 14 , and cover plates 16 are integrally formed to be unitized.
  • the first and second one-way clutches 8 and 9 are attached to the body frame 3 so as to be identical in directions of a slipping state and a meshing state of the outer wheel member 10 and inner wheel member 11 .
  • the space portions 12 of the outer wheel member 10 and inner wheel member 11 have been completely blocked by the cover plates 16 (see FIG. 6 )
  • the handle 20 is freely turnably provided on the belt-take-up shaft 7 that supports both one-way clutches 8 and 9 about an axis.
  • the handle 20 has handle support plates 21 and 22 arranged symmetrically at both end portions of the belt take-up shaft 7 .
  • These handle support plates 21 and 22 are, at their base end portions, freely turnably supported on the belt take-up shaft 7 .
  • a grasping member 23 to be grasped by an operator is provided sideways.
  • a reinforcing member 24 is provided sideways between the handle support plates 21 and 22 . This reinforcing member 24 couples and supports both handle support plates 21 and 22 so as to maintain a constant interval between the handle support plates 21 and 22 .
  • one handle support plates 21 is arranged so as to be adjacent to the outside surface of the second one-way clutch 9
  • the other handle support plate 22 is arranged so as to be adjacent to the inside surface of the first one-way clutch 8 .
  • the five rivets 17 (fixing portions) that fix the cover plates 16 to the inner wheel member 11 are protruded from the surfaces of the cover plates 16 , respectively, so that gaps exist between the handle support plates 21 , 22 and cover plates 16 , 16 . Therefore, when the handle 20 is turned, the handle support plates 21 , 22 and the cover plates 16 , 16 of the first and second one-way clutches 8 , 9 are not likely to contact each other, whereby the handle 20 can be smoothly turned.
  • the first latch 25 is provided so as to be relatively movable.
  • This first latch 25 is, at its both widthwise end portions, inserted through slits 21 a and 22 a formed respectively in the handle support plates 21 and 22 , and supported so as to be freely advanceable and retractable with respect to the handle support plates 21 and 22 so that its front end portion faces the belt take-up shaft 7 side. Furthermore, the first latch 25 is urged in the belt take-up shaft 7 direction by a spring member 26 .
  • the first latch 25 has a flat plate portion 25 e that extends parallel to its moving direction (arrow direction B of FIG. 4 ), a slope portion 25 f that extends to the side opposite the belt take-up shaft 7 in a manner slightly inclined in the closing direction (direction opposite the arrow direction A) of the handle 20 with respect to this flat plate portion 25 e , and a pull portion 25 a provided at an end portion of this slope portion 25 f on the side opposite the belt take-up shaft 7 .
  • the pull portion 25 a is formed so as to bend in the handle opening direction at almost a right angle and protrude from the end portion of the slope portion 25 f .
  • the first latch 25 moves in a direction to part from the belt take-up shaft 7 against an urging force of the spring member 26 .
  • a rectangular through-hole 25 g that is long widthwise is formed so as to allow the operator to insert his/her fingertips and easily pull up the pull portion 25 a .
  • the pull portion 25 a protruded from the slope portion 25 f is located on a plane (plane P shown by an alternate long and short dashed line) extended from the flat plate portion 25 e to the side opposite the belt take-up shaft 7 . Accordingly, since the first latch 25 linearly moves in the direction (along the alternate long and short dashed line P) of a force F applied to the pull portion 25 a , the first latch 25 can be moved by a minimum force.
  • an engaging portion 25 b that engages with the concave portion 10 a of the first one-way clutch 8 and an engagement avoiding portion 25 c that avoids engaging with the concave portion 10 a of the second one-way clutch 9 are formed at both widthwise end portions. Furthermore, between the engaging portion 25 b and engagement avoiding portion 25 c , a housing concave portion 25 d is formed, and the housing concave portion 25 d prevents, even when the first belt 1 thickens as a result of being taken up by the belt take-up shaft 7 , the first belt 1 from contacting the first latch 25 .
  • the first latch 25 thus constructed, when being applied with only the urging force of the spring member 26 as a result of the operator releasing his/her hand therefrom, engages with the first one-way clutch 8 as shown by an illustrated solid line.
  • the operator pulls up the first latch 25 to a position of an illustrated alternate long and two short dashed line engagement with the first one-way clutch 8 is released.
  • the first latch 25 never engages with the second one-way clutch 9 regardless of whether being pulled up.
  • a lateral side of the engaging portion 25 b hangs over to the outside of the first latch 25 .
  • the end portion of the engaging portion 25 b on the overhang side is, as shown in FIG. 1 , freely movably engaged with a support plate member 27 .
  • This support plate member 27 is freely turnably supported about an axis on the belt take-up shaft 7 , and further, while being parallel-arranged via the first one-way clutch 8 to the handle support plate 22 , is coupled and fixed by a shaft-like coupling member 28 .
  • the engaging portion 25 b is supported by the handle support plate 22 and support plate member 27 in the turning direction to exhibit a high rigidity between both members 22 and 27 , and is never bent by a reaction force at the take-up time even when the first belt 1 is taken up by turning the belt take-up shaft 7 via the first one-way clutch 8 .
  • the support plate member 27 is coupled and fixed to the handle support plate 22 , the handle 20 and support plate member 27 integrally turn. Accordingly, rattling when the handle 20 is turned is reduced, so that operability is improved.
  • first convex portions 25 h and 25 h on a surface (surface on the rear side of the sheet in FIG. 1 ) of the first latch 25 , at positions slightly inside further than the two handle support plates 21 and 22 , formed are two circular first convex portions 25 h and 25 h , respectively. Moreover, since these two first convex portions 25 h and 25 h guide a relative movement of the first latch 25 with respect to the handle support plates 21 and 22 , rattling is reduced and the first latch 25 is more easily moved, so that operability is improved.
  • stopper members 30 and 30 are provided at both end portions of the belt take-up shaft 7 .
  • the stopper member 30 on the first one-way clutch 8 side is arranged between the frame plate 4 and handle support plate 22
  • the stopper member 30 on the second one-way clutch 9 side is arranged between the second one-way clutch 9 and frame plate 4 .
  • On an outer circumferential surface of each stopper member 30 as shown in FIG. 5 , formed are protruded portions 30 a set to be almost identical in height to the convex portions 10 b of the first and second one-way clutches 8 and 9 .
  • Each protruded portion 30 a is made so as to be able to abut against the engaging portion 25 b and engagement avoiding portion 25 c of the first latch 25 of FIG. 11 , respectively, and is made so as to be able to avoid abutting by pulling up of the first latch 25 .
  • these respective protruded portions 30 a and 30 a set end points of take-up actions by the handle 20 , and make the handle 20 take a locking posture to restrict a belt loosening mechanism 6 to be described later from operating.
  • the stopper member 30 formed below the protruded portions 30 a are latching concave portions 30 b . With the latching concave portion 30 b , a front end portion of the second latch 31 is fitted, and by the second latch 31 , the stopper member 30 is restricted from turning.
  • This second latch 31 is, at its both widthwise end portions, inserted through slits 4 c and 4 c respectively formed in the frame plates 4 and 4 , and supported so as to be freely relatively movable with respect to the handle support plates 21 and 22 so that its front end portion faces the belt take-up shaft 7 side.
  • a coil spring 32 in a compressed state. The coil spring 32 urges the second latch 31 in the belt take-up shaft 7 direction.
  • an engaging portion 31 a that engages with the concave portion 10 a of the second one-way clutch 9 and an engagement avoiding portion 31 b that avoids engaging with the concave portion 10 a of the first one-way clutch 8 are formed at both widthwise end portions. Furthermore, between the engaging portion 31 a and engagement avoiding portion 31 b , a housing concave portion 31 c is formed, and the housing concave portion 31 c prevents, even when the first belt 1 thickens as a result of being taken up by the belt take-up shaft 7 , the first belt 1 from contacting the second latch 31 .
  • the second latch 31 thus constructed, as is also shown in FIG. 11 , when being located on the belt take-up shaft 7 side shown by an illustrated solid line by an urging force of the spring member 32 , engages with the second one-way clutch 9 , while when the second latch 31 retracts to a retracting position shown by an illustrated alternate long and two short dashed line, engagement with the second one-way clutch 9 is released.
  • the second latch 31 never engages with the first one-way clutch 9 regardless of whether being pulled up.
  • the aforementioned second latch 31 is retracted by the handle 20 . That is, the base end portions of the handle support plates 21 and 22 of the handle 20 are formed in slightly protruded curved shapes, and these base end portions abut against the front end of the second latch 31 to thereby retract the second latch 31 in the retracting direction.
  • a handle latching portion 4 a is formed at a longitudinal end portion of the frame plate 4 .
  • the handle latching portion 4 a is, when the handle 20 takes an opening posture where this is turned so as to retract the second latch 31 to the retracting position, fitted with the first latch 25 to thereby restrict the handle 20 from turning.
  • the handle latching portion 4 a is, as shown in FIG.
  • a notch portion 4 d through which the second convex portion 31 d of the second latch 31 can be inserted.
  • the second latch 31 is inserted through the slit 4 c . Then, while pressing the second latch 31 in a direction (right-hand side of FIG.
  • the stopper members 30 and 30 are to be attached to both end portions of the belt take-up shaft 7 , respectively. That is, the second latch 31 is maintained in a state pressed, by the stopper members 30 , to the side opposite the belt take-up shaft 7 . Thereupon, as shown in FIG. 4 , the second convex portion 31 d is located apart to the right from the belt take-up shaft 7 further than the notching portion 4 d .
  • the positional relationship between the second convex portion 31 d of the second latch 31 and notch portion 4 d is displaced in terms of the moving direction of the second latch 31 , after an attachment of the second latch, this second latch 31 is latched by the second convex portion 31 d , and is prevented from coming off from the slit 4 c.
  • the belt take-up mechanism 5 constructed as in the above, as shown in FIG. 1 , by turning the handle 20 in the opening direction to open with respect to the body frame 3 while pulling up the first latch 25 , the handle 20 is brought into an opening posture, and by turning the handle 20 in the opposite direction (closing direction), into a locking posture.
  • the first latch 25 abuts against the protruded portions 30 a of the stopper members 30 and handle support plates 21 and 22 before the handle 20 is brought into each posture.
  • the belt take-up shaft 7 can be made to take up the first belt 1 to be described later.
  • the belt loosening mechanism 6 At the other end portion of the body frame 3 on whose one end portion the aforementioned belt take-up mechanism 5 is provided, provided is the belt loosening mechanism 6 that gradually unwind the second belt 2 .
  • the belt loosening mechanism 6 has slope surfaces 4 b for which the respective frame plates 4 and 4 are inclined to the downside toward the end portion side, loosening support plates 41 and 41 fixedly provided on the respective frame plates 4 and 4 and arranged in parallel, and a first shaft 42 provided sideways between the frame plates 4 and 4 and that guides the second belt 2 in a manner overlapped therewith. At both end portions of the first shaft 42 , nuts 43 and 43 are screwed therewith, and each nut 43 fastens the loosening support plate 41 onto the frame plate 4 .
  • each loosening support plate 41 is formed and attached so that a vertex portion is located at its upper end portion, and a region from the vertex portion to its one end portion side is in a state exposed from the frame plate 4 .
  • a slotted hole 41 a is formed in the vertex portion of the loosening support plate 41 .
  • the slotted hole 41 a is set so that its long axis direction is orthogonal to the slope surface 4 b .
  • the aforementioned second shaft 45 is formed, at its both end portions, in cross-sectional circular shapes, and is formed, at its part excluding these both end portions, in a cross-sectional hexagonal shape. Moreover, the cross-sectional hexagonal-shaped part of this second shaft 45 is abutted against the upper end of the slope surface 4 b of the frame plate 4 almost vertical to the axis line of the slotted hole 41 a . Furthermore, at one end portion of the second shaft 45 , a turning lever 47 to turn the second shaft 45 is fixedly provided. Thereby, as shown in FIG. 14 , for the belt loosening mechanism 6 , the second shaft 45 is abutted against the slope surface 4 b of the frame plate 4 in a tensioned state of the second belt 2 .
  • a belt retaining member 48 that sandwiches the second belt 2 .
  • the belt retaining member 48 is turnably supported on the frame 4 .
  • the belt retaining member 48 is structured so that, as a result of one end being pressed by the second belt 2 , the other end sandwiches the second belt 2 with the first shaft 42 .
  • the second belt 2 is coupled to the belt loosening mechanism 6 .
  • This coupling is conducted by inserting the front end of the second belt 2 between the first shaft 42 and belt retaining member 48 therethrough from the outside, pulling up the second belt 2 in the second shaft 45 direction, and then winding around this second shaft 45 , pulling down in the first shaft 42 direction, inserting between the first shaft 42 and belt retaining member 48 therethrough from the inside and pulling.
  • FIG. 16 when tension is produced in the second belt 2 , the belt retainer member 48 turns in the arrow direction to press its upper surface to the first shaft 42 side, to thereby sandwich the second belt 2 overlapped double to prevent loosening.
  • FIG. 16 when tension is produced in the second belt 2 , the belt retainer member 48 turns in the arrow direction to press its upper surface to the first shaft 42 side, to thereby sandwich the second belt 2 overlapped double to prevent loosening.
  • the second one-way clutch 9 when tension is produced in the first belt 1 , a force in the unwinding direction (opposite direction to the arrow direction A) acts on the inner wheel member 11 via the belt take-up shaft 7 . And, in this case, similar to when the outer wheel member 10 receives a force in the arrow direction A (opening direction), the roller member 13 moves to the narrower-gap side of the space portion 12 to be stuck, thus resulting in a state where the inner wheel member 11 and the outer wheel member 10 are meshed with each other by the roller member 13 .
  • the outer wheel member 10 of the second one-way clutch 9 has been restricted from turning by the second latch 31 provided on the body frame 3 .
  • the first belt 1 is taken up on the belt take-up shaft 7 to produce tension therein. Also, at the time of a turn of the handle 20 , the first and second latch 25 and 31 never hit the gear to cause a collision noise to occur as in the conventional ratchet type belt tightener.
  • the five rivets 17 (fixing portions) to fix the cover plate 16 to the inner wheel member 11 are respectively protruded from the surfaces of the cover plate 16 , and a gap exists between the handle support plate 21 , 22 and cover plate 16 . Therefore, even if the one-way clutch 8 , 9 has been distorted, because of the gap formed between the cover plate 16 and handle support plate 21 , 22 , it is less likely that the one-way clutch 8 , 9 contacts the handle support plate 21 , 22 , so that it becomes less likely that a turn of the handle 20 is obstructed.
  • the inner wheel member 11 , outer wheel member 10 , roller members 13 , coil springs 14 , and two cover plates 16 of the one-way clutch 8 , 9 have been integrally formed so that the one-way clutch 8 , 9 have been unitized, even if the one-way clutch 8 , 9 is distorted, the one-way clutch 8 , 9 can be easily replaced.
  • the pull portion 25 a protruded from the slope portion 25 f is located on the plane P extended from the flat plate portion 25 e to the side opposite the belt take-up shaft 7 . Accordingly, since the first latch 25 linearly moves in the direction of the force F applied to the pull portion 25 a , the first latch 25 can be moved by a minimum force.
  • the tension of the second belt 2 can be gradually reduced.
  • the second shaft 45 has been formed in a cross-sectional hexagonal shape at its part excluding both end portions, and this part has been abutted against the slope surface 4 b of the frame plate 4 . This allows reliably performing unwinding of the second belt 2 .
  • the belt take-up shaft 7 supported about an axis on the first and second one-way clutches 8 and 9 becomes freely rotatable, and the first belt 1 is unwound by a remaining tension and an operator's operation, and detached from the truck sidewall 50 a . Also, in this case, the large tension of the first belt 1 has been gently reduced, a large noise never occurs due to a rapid change in tension.
  • the belt take-up mechanism 5 of the belt tightener 100 of the present embodiment includes the belt take-up shaft 7 which is supported about an axis on the body frame 3 and by which the first belt 1 is taken up, the handle 20 supported about an axis on the body frame so as to be coaxial with the belt take-up shaft 7 , the first one-way clutch 8 and the second one-way clutch 9 both fixed to the belt take-up shaft 7 and set in an identical direction in terms of a slipping state and a meshing state, the first latch 25 provided so as to be relatively movable on the handle 20 and engageable with and disengageable from the first one-way clutch 8 while being urged to the belt take-up shaft 7 -side, and the second latch 31 provided so as to be relatively movable on the body frame 3 and engageable with and disengageable from the second one-way clutch 9 while being urged to the belt take-up shaft 7 side.
  • the handle 20 is turned in the closing direction (direction where both one-way clutches 8 and 9 reach a slipping condition). Then, since the first one-way clutch 8 is in a slipping state, the turn of the handle 20 (first latch 25 ) is not transmitted to the belt take-up shaft 7 , so that the first belt 1 is not taken up.
  • the first latch 25 and the second latch 31 never hit the outer wheel member 10 of the one-way clutch 8 , 9 , so that no such large noise occurs as a collision noise between the ratchet gear and latch pawl as in the conventional ratchet type belt tightener.
  • a force from the handle 20 acts on only the first one-way clutch 8 fixed to one end portion of the belt take-up shaft 7 , however, since the two cover plates 16 have been respectively fixed to both side surfaces of the inner wheel member 11 of the one-way clutch 8 , 9 , strength of the one-way clutch 8 , 9 as a whole is increased to be less likely to be distorted. Accordingly, the handle 20 can be turned lightly by a smaller force.
  • the cover plates 16 and 16 on both side surfaces of the inner wheel member 11 the outer wheel member 10 is prevented from coming off from the inner wheel member 11 , and the inner wheel member 11 , outer wheel member 10 , and two cover plates 16 have been integrally formed so that the one-way clutch 8 , 9 has been unitized, and thus even if the one-way clutch 8 , 9 has been distorted, the one-way clutch 8 , 9 can be easily replaced.
  • first convex portion 25 h that guides a relative movement of the first latch 25 with respect to the handle 20 and the second convex portion 31 d that guides a relative movement of the second latch 31 with respect to the frame 4 are not limited in shapes to those in the embodiment described above, and these may, for example, be extended long in the moving directions of the first and second latches 25 and 31 .
  • first convex portion 25 h and the second convex portion 31 d may be formed of separate members from the first and second latches 25 and 31 .
  • the notch portion 4 d through which, at the time of assembly of the belt tightener 100 , the second convex portion 31 d is inserted is formed on both of the two frame plates 4 , and this may be formed on only one of the frame plates 4 .
  • the second shaft 45 is in a cross-sectional hexagonal shape, this may be in a polygonal shape equal to or more polygonal than a cross-sectional triangular shape, a circular shape, or an oval shape, and may, as shown in FIG. 18 , be in a cam shape.
  • the second shaft 45 is in a cross-sectional polygonal shape, an oval shape, or a cam shape at, at least, its part abutting against the slope portion 4 b .
  • the second shaft 45 is applied, at its circumferential surface, with an anti-slip processing such as knurling for the second belt 2 . This allows further reliably performing unwinding of the second belt 2 .
  • the belt tightener 100 of the present embodiment is constructed with a locking means that restricts a turn of the second shaft 45 . That is, as shown in FIG. 3A and FIG. 3B , by using the handle 20 as the locking means and bringing this handle 20 into a locking posture, a decline in tension, after sufficiently producing tension in the first belt 1 and the second belt 2 , due to turning of the second shaft 45 can be prevented.
  • this locking means is not limited to such a construction as described above. For example, as shown in FIG.
  • the locking means may be constructed with a locking slotted hole 47 a that is formed within the turning lever 47 and whose major axis direction is made coincident with the longitudinal direction of the turning lever 47 , a lock plate 50 provided so as to be freely advanceable and retractable in this locking slotted hole 47 a , and a notched portion 41 b that is formed in a loosening support plate 41 and with which a front end portion of the lock plate 50 is engaged.
  • a locked state can be realized by only the belt loosening mechanism 6 without regard to the posture of the handle 20 .
  • the second shaft 45 may be in a circular shape and be merely freely turnably supported on the body frame 3 .
  • the belt tightener 100 includes both the belt take-up mechanism 5 and belt loosening mechanism 6 , however, the present invention is not limited hereto, and the belt tightener 100 may include only the belt take-up mechanism 5 .
  • FIG. 1 A perspective view of a belt tightener.
  • FIG. 2A A plan view (take-up time of the first belt) of a belt tightener.
  • FIG. 2B A front view (take-up time of the first belt) of a belt tightener.
  • FIG. 3A A plan view (locked state) of a belt tightener.
  • FIG. 3B A front view (locked state) of a belt tightener.
  • FIG. 4 A schematic configuration diagram of the main part of a belt tightener.
  • FIG. 5 A schematic configuration diagram showing, in a partially broken state, a belt tightener.
  • FIG. 6 A front view of a one-way clutch.
  • FIG. 7 A front view of a one-way clutch with cover plates detached.
  • FIG. 8 A front view of a roller member and a coil spring.
  • FIG. 9 A view from the left of the roller member and coil spring of FIG. 8 .
  • FIG. 10 An enlarged plan view in the vicinity of a belt take-up shaft of a belt tightener.
  • FIG. 11 An explanatory view showing an engaging state of one-way clutches and latches.
  • FIG. 12 A schematic configuration diagram of a belt loosening mechanism.
  • FIG. 13A An explanatory view showing a first shaft lowered in a slotted hole.
  • FIG. 13B An explanatory view showing a first shaft raised in a slotted hole.
  • FIG. 14 An explanatory view showing a guiding path of a second belt in a belt loosening mechanism.
  • FIG. 15 An explanatory view showing a second belt released from a belt retaining member in a belt loosening mechanism.
  • FIG. 16 An explanatory view showing a second belt sandwiched by a belt retaining member in a belt loosening mechanism.
  • FIG. 17 An explanatory view of a belt tightener of the present embodiment provided on a truck.
  • FIG. 18 An explanatory view of a belt loosening mechanism of a modification.
  • FIG. 19 An explanatory view of a belt loosening mechanism (locked state) of another modification.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Package Frames And Binding Bands (AREA)
  • Mechanical Operated Clutches (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Peptides Or Proteins (AREA)
  • Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
US11/912,464 2005-04-25 2005-04-25 Belt Fastening Device Abandoned US20080189921A1 (en)

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Application Number Priority Date Filing Date Title
PCT/JP2005/007836 WO2006114889A1 (ja) 2005-04-25 2005-04-25 ベルト締具

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US11/912,464 Abandoned US20080189921A1 (en) 2005-04-25 2005-04-25 Belt Fastening Device

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US (1) US20080189921A1 (ja)
EP (1) EP1876374B1 (ja)
JP (1) JP4634446B2 (ja)
CN (1) CN100570173C (ja)
AT (1) ATE468498T1 (ja)
DE (1) DE602005021403D1 (ja)
WO (1) WO2006114889A1 (ja)

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US20100242232A1 (en) * 2009-03-31 2010-09-30 D B Industries, Inc. Safety Harness Strap Adjuster
US20100242233A1 (en) * 2009-03-31 2010-09-30 D B Industries, Inc. Method of Adjusting a Strap of a Safety Harness
US20100243373A1 (en) * 2009-03-30 2010-09-30 D B Industries, Inc. Buckle
US20110167599A1 (en) * 2010-01-13 2011-07-14 Douglas Wright Ratchet strap
US20120110801A1 (en) * 2010-11-04 2012-05-10 Joubert Productions Strap tensioning device
US20120205601A1 (en) * 2009-11-25 2012-08-16 Joubert Productions Strap-tensioning device
US20120233823A1 (en) * 2011-03-15 2012-09-20 Yeh-Chien Chou Ratchet Strap Tightener
US20130326847A1 (en) * 2012-06-12 2013-12-12 Mei-Yu Zheng Strap-Tensioning Apparatus
WO2014074983A1 (en) * 2012-11-12 2014-05-15 Bermes Steven P Ratchet strap apparatus including easily attachable cargo strap
US20150128388A1 (en) * 2013-11-11 2015-05-14 Cory Mastbeth Binding apparatus, method and system
WO2015100355A3 (en) * 2013-12-23 2015-10-22 Holland Lp Strap tensioning buckle apparatus and methods of using the same
US9993048B2 (en) 2015-06-10 2018-06-12 D B Industries, Llc Safety harness connector assembly
US20180339637A1 (en) * 2017-05-23 2018-11-29 Winston Products, Llc Ratchet tie down
USD845727S1 (en) * 2016-10-18 2019-04-16 Mike Haynes Strap winding apparatus
US10849389B1 (en) * 2018-02-15 2020-12-01 Kamiko L. Darrow Device for assisting lace tightening
US20220055522A1 (en) * 2020-08-18 2022-02-24 Nicholas Deplaris Locking mechanism for tie down locking device
US11344440B2 (en) 2015-01-22 2022-05-31 Koninklijke Philips N.V. Endograft visualization with pre-integrated or removable optical shape sensing attachments
US11698102B1 (en) * 2022-01-12 2023-07-11 Han-Ching Huang Self-lubricating tie-down

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US7877846B1 (en) 2009-05-15 2011-02-01 Weiguo Chen Ratchet buckle with excess strap retention arm and double layered arm
USD675498S1 (en) 2010-06-18 2013-02-05 Master Lock Company Llc Ratchet
EP2455257B1 (de) * 2010-11-23 2014-06-25 Westdeutscher Drahtseil-Verkauf Dolezych GmbH & Co. KG Spannvorrichtung zum Spannen von Gurten oder dergleichen
USD681411S1 (en) 2011-08-30 2013-05-07 Master Lock Company Llc Ratchet lock
CN105540042A (zh) * 2016-02-25 2016-05-04 苏州瑞奇丽新材料有限公司 一种包装绳放松锁扣
CN113508964B (zh) * 2021-05-14 2024-02-13 厦门任和运动器材有限公司 一种锁头的压紧装置及包含其的单向锁紧锁扣
DE102022100552B3 (de) 2022-01-11 2023-05-11 Han-Ching Huang Selbstschmierender spanngurt
CN114620258A (zh) * 2022-02-15 2022-06-14 浙江双友物流器械股份有限公司 一种捆绑器的手柄结构

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US5611520A (en) * 1992-03-16 1997-03-18 Alvin C. Collins Strap collector
US5369848A (en) * 1994-03-14 1994-12-06 Huang; Han-Ching Operating arm for strapping mechanism
US5542798A (en) * 1994-10-13 1996-08-06 Mcdonnell Douglas Corporation Restraining and tensioning apparatus for a cargo tie-down belt
US6547218B2 (en) * 1998-05-29 2003-04-15 Richard Landy Ratchet and cam buckle tensioning assembly and method for using same
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US20030071251A1 (en) * 2001-10-16 2003-04-17 Hu Yu Fang Belt reel assembly for fastening goods on a truck
US6609275B1 (en) * 2002-02-05 2003-08-26 Chia-Sheng Lin Strap tightener with an auto-pulling device
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US7100902B1 (en) * 2005-07-19 2006-09-05 Jung-Wen Lu Hand-pulled device for winding binding strap

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100243373A1 (en) * 2009-03-30 2010-09-30 D B Industries, Inc. Buckle
US8181319B2 (en) 2009-03-30 2012-05-22 D B Industries, Inc. Buckle
US8794378B2 (en) 2009-03-31 2014-08-05 D B Industries, Llc Method of adjusting a strap of a safety harness
US20100242233A1 (en) * 2009-03-31 2010-09-30 D B Industries, Inc. Method of Adjusting a Strap of a Safety Harness
US20100242232A1 (en) * 2009-03-31 2010-09-30 D B Industries, Inc. Safety Harness Strap Adjuster
US8967332B2 (en) * 2009-03-31 2015-03-03 D B Industries, Llc Safety harness strap adjuster
US20120205601A1 (en) * 2009-11-25 2012-08-16 Joubert Productions Strap-tensioning device
US8915485B2 (en) * 2009-11-25 2014-12-23 Joubert Productions Strap-tensioning device
US20110167599A1 (en) * 2010-01-13 2011-07-14 Douglas Wright Ratchet strap
US8370997B2 (en) * 2010-01-13 2013-02-12 Ratchet Depot, Inc. Ratchet strap
US20120110801A1 (en) * 2010-11-04 2012-05-10 Joubert Productions Strap tensioning device
US9725029B2 (en) * 2011-03-15 2017-08-08 The Ratchet Depot, Inc. Ratchet strap tightener
US20120233823A1 (en) * 2011-03-15 2012-09-20 Yeh-Chien Chou Ratchet Strap Tightener
US20130326847A1 (en) * 2012-06-12 2013-12-12 Mei-Yu Zheng Strap-Tensioning Apparatus
US9259828B2 (en) 2012-11-12 2016-02-16 Steven P. Bermes Ratchet strap apparatus including easily attachable cargo strap
WO2014074983A1 (en) * 2012-11-12 2014-05-15 Bermes Steven P Ratchet strap apparatus including easily attachable cargo strap
US9751449B2 (en) 2012-11-12 2017-09-05 Steven P Bermes Ratchet strap apparatus including easily attachable cargo strap
US20150128388A1 (en) * 2013-11-11 2015-05-14 Cory Mastbeth Binding apparatus, method and system
WO2015100355A3 (en) * 2013-12-23 2015-10-22 Holland Lp Strap tensioning buckle apparatus and methods of using the same
US11344440B2 (en) 2015-01-22 2022-05-31 Koninklijke Philips N.V. Endograft visualization with pre-integrated or removable optical shape sensing attachments
US9993048B2 (en) 2015-06-10 2018-06-12 D B Industries, Llc Safety harness connector assembly
USD845727S1 (en) * 2016-10-18 2019-04-16 Mike Haynes Strap winding apparatus
US20180339637A1 (en) * 2017-05-23 2018-11-29 Winston Products, Llc Ratchet tie down
US10836299B2 (en) * 2017-05-23 2020-11-17 Winston Products Llc Ratchet tie down
US11752921B2 (en) 2017-05-23 2023-09-12 Winston Products Llc Ratchet tie down
US11305685B2 (en) 2017-05-23 2022-04-19 Winston Products Llc Ratchet tie down
US10849389B1 (en) * 2018-02-15 2020-12-01 Kamiko L. Darrow Device for assisting lace tightening
US11414006B2 (en) * 2020-08-18 2022-08-16 Nicholas Deplaris Locking mechanism for tie down locking device
US11607985B2 (en) * 2020-08-18 2023-03-21 Nicholas Deplaris Locking mechanism for tie down locking device
US20220055522A1 (en) * 2020-08-18 2022-02-24 Nicholas Deplaris Locking mechanism for tie down locking device
US11698102B1 (en) * 2022-01-12 2023-07-11 Han-Ching Huang Self-lubricating tie-down
US20230220873A1 (en) * 2022-01-12 2023-07-13 Han-Ching Huang Self-lubricating tie-down

Also Published As

Publication number Publication date
EP1876374A4 (en) 2008-07-30
DE602005021403D1 (de) 2010-07-01
JPWO2006114889A1 (ja) 2008-12-11
EP1876374A1 (en) 2008-01-09
ATE468498T1 (de) 2010-06-15
EP1876374B1 (en) 2010-05-19
JP4634446B2 (ja) 2011-02-16
CN100570173C (zh) 2009-12-16
WO2006114889A1 (ja) 2006-11-02
CN101166919A (zh) 2008-04-23

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