GB2469262A - Cable tightening device having a self-locking function - Google Patents

Cable tightening device having a self-locking function Download PDF

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Publication number
GB2469262A
GB2469262A GB0902319A GB0902319A GB2469262A GB 2469262 A GB2469262 A GB 2469262A GB 0902319 A GB0902319 A GB 0902319A GB 0902319 A GB0902319 A GB 0902319A GB 2469262 A GB2469262 A GB 2469262A
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GB
United Kingdom
Prior art keywords
stop plate
fixed unit
locking
base
tightening device
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.)
Withdrawn
Application number
GB0902319A
Other versions
GB0902319D0 (en
Inventor
Wen-Cheng Chang
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.)
Win Chance Metal Co Ltd
Original Assignee
Win Chance Metal 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 Win Chance Metal Co Ltd filed Critical Win Chance Metal Co Ltd
Priority to GB0902319A priority Critical patent/GB2469262A/en
Publication of GB0902319D0 publication Critical patent/GB0902319D0/en
Publication of GB2469262A publication Critical patent/GB2469262A/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B25/00—Implements for fastening, connecting or tensioning of wire or strip
    • 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
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D45/00—Means or devices for securing or supporting the cargo, including protection against shocks

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Handcart (AREA)

Abstract

A cable tightening device includes a fixed unit 10, and a movable unit 20 mounted on the fixed unit. The fixed unit includes a base 16, a rotation member 30, two ratchet wheels 40, and a stop plate 50. The stop plate has two locking flanges 52 which may be in the form of a trough, channel, hole (51a, Figure 7) or protrusion (51b, Figure 8) movably mounted to the base 16 preferably via a sliding slot 13 which may have a locking face. Each of the ratchet wheels has a plurality of one way ratchet teeth 41 each provided with a locking hook 52 which may be bard shaped capable of being locked onto the respective locking flange of the stop plate. The base may have a stop portion (15, Figure 7) and the movable member 20 may have a stop block (24, Figure 9). Thus, even if the movable unit is removed from the rotation member, each of the ratchet wheels is still locked onto of the stop plate, and the stop plate cannot be detached from the ratchet wheels due to an external pulling force.

Description

CABLE TIGHTENING DEVICE HAVING A SELF-LOCKING FUNCTION
The present invention relates to a cable tightening device and, more particularly, to a cable tightening device for tightening or loosening a cable so as to bind or release a cargo.
A cable tightening device is mounted on a wheeled vehicle having a larger size, such as a truck or the like, to tighten a cable which is wound around a cargo so as to tighten the cargo. A conventional cable tightening device in accordance with the prior art shown in Figs. 11 and 12 comprises a fixed unit and a movable unit 70 rotatably mounted on the fixed unit 60. The fixed unit 60 includes a base 65, a rotation member 80 rotatably mounted on the base 65 to wind and unwind a cable (not shown) by rotation of the rotation member 80 relative to the base 65, two opposite ratchet wheels 61 secured on two opposite ends of the rotation member 80 to rotate the rotation member 80 relative to the base 65, a stop plate 63 movably mounted on the base 65 and releasably engaged with the two ratchet wheels 61 to allow the ratchet wheels 61 to rotate relative to the base 65 in a oneway direction, and two torsion springs 62 each mounted on the base 65 and each biased between the base 65 and the stop plate 63 to push the stop plate 63 toward the two ratchet wheels 61. The base 65 of the fixed unit 60 has two opposite sidewalls 66 each having a mediate portion provided with an elongate sliding slot 64 to allow movement of the stop plate 63. Each of the two torsion springs 62 of the fixed unit 60 is mounted in the respective sliding slot 64 of the base 65. The movable unit 70 includes a movable member 72 rotatably mounted on the rotation member 80 of the fixed unit 60 and movable relative to the base 65 of the fixed unit 60 to drive the rotation member 80 of the fixed unit 60 to rotate relative to the base 65 of the fixed unit 60 in a oneway direction, a drive plate 71 movably mounted on the movable member 72 and releasably engaged with the two ratchet wheels 61 of the fixed unit 60 to push the two ratchet wheels 61 and the rotation member 80 of the fixed unit 60 to rotate relative to the base 65 of the fixed unit 60 in a oneway direction, and a release member 74 mounted on a side of the drive plate 71 to drive the drive plate 71 to move relative to the two ratchet wheels 61 of the fixed unit 60 so as to lock the movable member 72 of the movable unit onto the base 65 of the fixed unit 60 or to unlock the movable member 72 of the movable unit 70 from the base 65 of the fixed unit 60. Thus, the release member 74 of the movable unit 70 is pulled outwardly to pull the drive plate 71 of the movable unit 70 to detach from the two ratchet wheels 61 of the fixed unit 60 and to unlock the movable member 72 of the movable unit 70 from the base 65 of the fixed unit 60 so that the drive plate 71 of the movable unit 70 skips the two ratchet wheels 61 of the fixed unit 60 when the movable member 72 of the movable unit 70 is rotatable on the rotation member 80 of the fixed unit 60, and the movable member 72 of the movable unit 70 is movable relative to the base 65 of the fixed unit 60 successively.
In operation, when the movable member 72 of the movable unit 70 is pivoted outwardly relative to the base 65 of the fixed unit 60, the drive plate 71 of the movable unit 70 is moved with the movable member 72 of the movable unit 70 to push and rotate the two ratchet wheels 61 which rotate the rotation member 80 of the fixed unit 60 relative to the base 65 of the fixed unit 60. On the contrary, when the movable member 72 of the movable unit 70 is pivoted toward the base 65 of the fixed unit 60, the drive plate 71 of the movable unit passes by the two ratchet wheels 61 of the fixed unit 60 so that the rotation member 80 of the fixed unit 60 is not rotated by the drive plate 71 of the movable unit 70. At this time, the two ratchet wheels 61 of the fixed unit 60 are stopped by the stop plate 63 of the fixed unit 60 to prevent the two ratchet wheels 61 of the fixed unit 60 from being rotated relative to the base 65 of the fixed unit 60. Thus, when the movable member 72 of the movable unit 70 is pivoted relative to the base 65 of the fixed unit 60 in a reciprocal manner, the drive plate 71 of the movable unit 70 is moved with the movable member 72 of the movable unit 70 to push the ratchet wheels 61 of the fixed unit 60 to rotate in a oneway direction so that the rotation member 80 of the fixed unit 60 is rotated successively in a oneway direction to wind the cable successively so as to tighten a cargo. However, the stop plate 63 of the fixed unit 60 is easily detached from the two ratchet wheels 61 of the fixed unit 60.
As shown in Fig. 12, when the movable member 72 of the movable unit 70 is removed from the rotation member 80 of the fixed unit 60 to detach the drive plate 71 of the movable unit 70 from the two ratchet wheels 61 of the fixed unit 60, the stop plate 63 of the fixed unit 60 is easily pulled outwardly relative to the two ratchet wheels 61 of the fixed unit 60 due to an external pulling force applied on the stop plate 63 intentionally or unintentionally so that the stop plate 63 of the fixed unit 60 is detached from the two ratchet wheels 61 of the fixed unit 60, and the two ratchet wheels 61 of the fixed unit 60 are driven by the weight of the cargo to rotate in the unwinding direction to unwind the cable.
In accordance with the present invention, there is provided a cable tightening device, comprising a fixed unit and a movable unit rotatably mounted on the fixed unit. The fixed unit includes a base, a rotation member rotatably mounted on the base, two opposite ratchet wheels secured on two opposite ends of the rotation member to rotate the rotation member relative to the base, and a stop plate movably mounted on the base and releasably engaged with the two ratchet wheels to allow the ratchet wheels to rotate relative to the base in a oneway direction. The stop plate of the fixed unit has a first end provided with two locking flanges. Each of the two ratchet wheels of the fixed unit has a periphery provided with a plurality of oblique oneway ratchet teeth each having a distal end provided with a locking hook locked onto a respective one of the two locking flanges of the stop plate.
The primary objective of the present invention is to provide a cable tightening device having a self-locking function.
Another objective of the present invention is to provide a cable tightening device, wherein the locking hook of any one of the ratchet teeth of each of the two ratchet wheels is locked onto the respective locking flange of the stop plate so that each of the two ratchet wheels is locked onto of the stop plate, and the stop plate will not be detached from each of the two ratchet wheels due to an external pulling force to prevent each of the two ratchet wheels from being rotated in the unwinding direction and to prevent the cable from being unwound.
A further objective of the present invention is to provide a cable tightening device, wherein even if the movable member of the movable unit is removed from the rotation member of the fixed unit to detach the drive plate of the movable unit from the two ratchet wheels of the fixed unit, each of the two ratchet wheels is still locked onto of the stop plate, and the stop plate carmot be detached from the two ratchet wheels due to an external pulling force applied on the stop plate intentionally or unintentionally.
A further objective of the present invention is to provide a cable tightening device, wherein when each of the two locking flanges of the stop plate is pressed by one of the ratchet teeth of the respective ratchet wheel, the stop plate is pivoted and deflected in the sliding slot of the base, and the abutting portion of the stop plate is moved to abut the locking edge of the sliding slot to lock the stop plate of the fixed unit in the sliding slot of the base so as to prevent from the stop plate of the fixed unit being moved relative to the two ratchet wheels.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
In the drawings: Fig. 1 is a perspective view of a cable tightening device in accordance with the preferred embodiment of the present invention.
Fig. 2 is an exploded perspective view of the cable tightening device asshowninFig. 1.
Fig. 3 is a side cross-sectional view of the cable tightening device as showninFig. 1.
Fig. 4 is a perspective view showing the movable member of the movable unit is removed from the rotation member of the fixed unit.
Fig. 5 is a side cross-sectional view of the cable tightening device as shown in Fig. 4.
Fig. 6 is a schematic operational view of the cable tightening device as shown in Fig. 5.
Fig. 7 is an exploded perspective view of a cable tightening device in accordance with another preferred embodiment of the present invention.
Fig. 8 is an exploded perspective view of a cable tightening device in accordance with another preferred embodiment of the present invention.
Fig. 9 is a side view of a cable tightening device in accordance with another preferred embodiment of the present invention.
Fig. 10 is a perspective view of a cable tightening device in accordance with another preferred embodiment of the present invention.
Fig. 11 is an exploded perspective view of a conventional cable tightening device in accordance with the prior art.
Fig. 12 is a partially side cross-sectional view of the conventional cable tightening device as shown in Fig. 11.
Referring to the drawings and initially to Figs. 1-3, a cable tightening device in accordance with the preferred embodiment of the present invention comprises a fixed unit 10 and a movable unit 20 rotatably mounted on the fixed unit 10.
The fixed unit 10 includes a base 16, a rotation member 30 rotatably mounted on an end portion of the base 16 to wind and unwind a cable (not shown) by rotation of the rotation member 30 relative to the base 16, two opposite ratchet wheels 40 secured on two opposite ends of the rotation member 30 to rotate the rotation member 30 relative to the base 16, a stop plate movably mounted on the base 16 and releasably engaged with the two ratchet wheels 40 to allow the ratchet wheels 40 to rotate relative to the base 16 in a oneway direction, and two torsion springs 11 each mounted on the base 16 and each biased between the base 16 and the stop plate 50 to push the stop plate 50 toward the two ratchet wheels 40.
The base 16 of the fixed unit 10 has a substantially U-shaped profile and has two opposite sidewalls 17 each having a mediate portion provided with an elongate sliding slot 12 to allow and guide movement of the stop plate 50.
Each of the two torsion springs 11 of the fixed unit 10 is mounted in the respective sliding slot 12 of the base 16.
The movable unit 20 includes a movable member 22 rotatably mounted on the rotation member 30 of the fixed unit 10 and movable relative to the base 16 of the fixed unit 10, a drive plate 21 movably mounted on the movable member 22 and releasably engaged with the two ratchet wheels 40 of the fixed unit 10 to drive the two ratchet wheels 40 and the rotation member 30 of the fixed unit 10 to rotate relative to the base 16 of the fixed unit 10 in a oneway direction, and a release member 25 mounted on a side of the drive plate 21 to drive the drive plate 21 to move relative to the two ratchet wheels 40 of the fixed unit 10 so as to lock the movable member 22 of the movable unit onto the base 16 of the fixed unit 10 or to unlock the movable member 22 of the movable unit 20 from the base 16 of the fixed unit 10. The movable member 22 of the movable unit 20 is detachably mounted on and is detachable from the rotation member 30 of the fixed unit 10. The drive plate 21 of the movable unit 20 is movable with the movable member 22 of the movable unit to rotate relative to the base 16 of the fixed unit 10.
The release member 25 of the movable unit 20 can be pulled outwardly to pull the drive plate 21 of the movable unit 20 to detach from the two ratchet wheels 40 of the fixed unit 10 and to unlock the movable member 22 of the movable unit 20 from the base 16 of the fixed unit 10 so that the drive plate 21 of the movable unit 20 skips the two ratchet wheels 40 of the fixed unit when the movable member 22 of the movable unit 20 is rotatable on the rotation member 30. Thus, when the drive plate 21 of the movable unit 20 is detached from the two ratchet wheels 40 of the fixed unit 10, the two ratchet wheels 40 of the fixed unit 10 will not interfere with movement of the drive plate 21 of the movable unit 20, so that the movable member 22 of the movable unit 20 is movable relative to the base 16 of the fixed unit 10 freely.
In operation, when the movable member 22 of the movable unit 20 is pivoted outwardly relative to the base 16 of the fixed unit 10, the drive plate 21 of the movable unit 20 is moved with the movable member 22 of the movable unit 20 to drive and rotate the two ratchet wheels 40 which rotate the rotation member 30 of the fixed unit 10 relative to the base 16 of the fixed unit 10. On the contrary, when the movable member 22 of the movable unit 20 is pivoted toward the base 16 of the fixed unit 10, the drive plate 21 of the movable unit 20 passes by the two ratchet wheels 40 of the fixed unit 10 so that the rotation member 30 of the fixed unit 10 is not rotated by the drive plate 21 of the movable unit 20. At this time,the two ratchet wheels 40 of the fixed unit 10 are stopped by the stop plate 50 of the fixed unit 10 to prevent the two ratchet wheels 40 of the fixed unit 10 from being rotated relative to the base 16 of the fixed unit 10. Thus, when the movable member 22 of the movable unit 20 is pivoted relative to the base 16 of the fixed unit 10 in a reciprocal manner, the drive plate 21 of the movable unit 20 is moved with the movable member 22 of the movable unit 20 to drive the ratchet wheels 40 of the fixed unit 10 to rotate in a oneway direction so that the rotation member 30 of the fixed unit 10 is rotated successively in a oneway direction to wind the cable successively so as to tighten a cargo.
In the preferred embodiment of the present invention, the stop plate of the fixed unit 10 is movably mounted in the sliding slot 12 of the base 16 and has a first end provided with two locking flanges 52. Each of the two locking flanges 52 of the stop plate 50 is extended and directed toward a direction which is perpendicular to a movement direction of the stop plate 50 relative to the ratchet wheels 40 of the fixed unit 10. Each of the two locking flanges 52 of the stop plate 50 has a top flush with a top face of the stop plate 50. Each of the two locking flanges 52 of the stop plate 50 has a side provided with a locking space 51. Preferably, the locking space 51 of each of the two locking flanges 52 is a recess extending through a whole length of each of the two locking flanges 52 and has a bottom wall located at a height smaller than that of the top of each of the two locking flanges 52 and that of the top face of the stop plate 50.
The sliding slot 12 of the base 16 and has a side provided with a stepped locking edge 13. The stop plate 50 of the fixed unit 10 has a second end provided with an abutting portion 53 that is movable to abut the locking edge 13 of the sliding slot 12 to lock the stop plate 50 of the fixed unit lOin the sliding slot 12 of the base 16.
Each of the two ratchet wheels 40 of the fixed unit 10 has a periphery provided with a plurality of oblique oneway ratchet teeth 41 each having a distal end provided with a locking hook 43 locked onto a respective one of the two locking flanges 52 of the stop plate 50. The ratchet teeth 41 of each of the two ratchet wheels 40 engage the drive plate 21 of the movable unit 20 in a oneway manner. The locking hook 43 of each of the ratchet teeth 41 of each of the two ratchet wheels 40 has a substantially barb-shaped profile and is received in the locking space 51 of the respective locking flange 52 of the stop plate 50. The locking hook 43 of each of the ratchet teeth 41 of each of the two ratchet wheels 40 is extended and directed toward a direction which is perpendicular to the movement direction of the stop plate 50 relative to the ratchet wheels 40 of the fixed unit 10. Each of the ratchet teeth 41 of each of the two ratchet wheels 40 has an inner side provided with a locking groove 42 to receive the respective locking flange 52 of the stop plate 50. The locking groove 42 of each of the ratchet teeth 41 of each of the two ratchet wheels 40 is defined between the locking hook 43 and the periphery of each of the two ratchet wheels 40.
As shown in Fig. 3, when each of the two ratchet wheels 40 of the fixed unit 10 is rotated relative to the base 16 of the fixed unit 10 in the counterclockwise direction, each of the ratchet teeth 41 of each of the two ratchet wheels 40 skips and passes by the stop plate 50 of the fixed unit 10, and when each of the two ratchet wheels 40 of the fixed unit 10 is rotated relative to the base 16 of the fixed unit 10 in the clockwise direction, each of the ratchet teeth 41 of each of the two ratchet wheels 40 is stopped by the stop plate 50 of the fixed unit 10 to stop movement of each of the two ratchet wheels 40. At this time, the locking hook 43 of one of the ratchet teeth 41 of each of the two ratchet wheels 40 is locked onto the respective locking flange 52 of the stop plate 50 so that each of the two ratchet wheels 40 is locked onto of the stop plate 50 in the clockwise direction to prevent the stop plate 50 from being detached from each of the two ratchet wheels 40 due to an external pulling force.
As shown in Figs. 4 and 5, even if the movable member 22 of the movable unit 20 is removed from the rotation member 30 of the fixed unit 10 to detach the drive plate 21 of the movable unit 20 from the two ratchet wheels 40 of the fixed unit 10, the locking hook 43 of one of the ratchet teeth 41 of each of the two ratchet wheels 40 is locked onto the respective locking flange 52 of the stop plate 50 so that each of the two ratchet wheels 40 is locked onto of the stop plate 50, and the stop plate 50 will not be detached from each of the two ratchet wheels 40 due to an external pulling force to prevent each of the two ratchet wheels 40 from being rotated in the clockwise direction and to prevent the cable from being unwound.
As shown in Fig. 6, when each of the two locking flanges 52 of the stop plate 50 is pressed by one of the ratchet teeth 41 of the respective ratchet wheel 40, the stop plate 50 is pivoted and deflected in the sliding slot 12 of the base 16, and the abutting portion 53 of the stop plate 50 is moved to abut the locking edge 13 of the sliding slot 12 to lock the stop plate 50 of the fixed unit in the sliding slot 12 of the base 16 so as to prevent from the stop plate 50 of the fixed unit 10 being moved relative to the two ratchet wheels 40.
As shown in Fig. 7, the locking space 5 la of each of the two locking flanges 52a is a through hole extending through a whole thickness of the stop plate 50a. In addition, each of the two opposite sidewalls 17 of the base 16 of the fixed unit 10 has an end portion provided with a protruding stop portion 15.
Thus, the drive plate 21 of the movable unit 20 is movable relative to the base 16 of the fixed unit 10 to abut the stop portions 15 of the base 16 of the fixed unit 10 to stop and limit a further movement of the movable member 22 of the movable unit 20 relative to the base 16 of the fixed unit 10.
As shown in Fig. 8, each of the two locking flanges 52b of the stop plate 50b has a bent shape and protrudes upward from the stop plate 50b to define the locking space 5 lb between each of the two locking flanges 52b and a top of the stop plate 50b. Preferably, each of the two locking flanges 52b of the stop plate 50b is perpendicular to the stop plate 50b.
As shown in Fig. 9, the movable member 22 of the movable unit 20 has a periphery provided with at least one protruding stop block 24 that is movable to abut a bottom of the stop plate 50 to stop and limit a further movement of the movable member 22 of the movable unit 20 relative to the base 16 of the fixed unit 10.
As shown in Fig. 10, the movable member 22 of the movable unit 20 is fixed on and cannot be detached from the rotation member 30 of the fixed unit 10.
Accordingly, the locking hook 43 of any one of the ratchet teeth 41 of each of the two ratchet wheels 40 is locked onto the respective locking flange 52 of the stop plate 50 so that each of the two ratchet wheels 40 is locked onto of the stop plate 50, and the stop plate 50 will not be detached from each of the two ratchet wheels 40 due to an external pulling force to prevent each of the two ratchet wheels 40 from being rotated in the unwinding direction and to prevent the cable from being unwound. In addition, even if the movable member 22 of the movable unit 20 is removed from the rotation member 30 of the fixed unit 10 to detach the drive plate 21 of the movable unit 20 from the two ratchet wheels 40 of the fixed unit 10, each of the two ratchet wheels 40 is still locked onto of the stop plate 50, and the stop plate 50 cannot be detached from the two ratchet wheels 40 due to an external pulling force applied on the stop plate 50 intentionally or unintentionally. Further, when each of the two locking flanges 52 of the stop plate 50 is pressed by one of the ratchet teeth 41 of the respective ratchet wheel 40, the stop plate 50 is pivoted and deflected in the sliding slot 12 of the base 16, and the abutting portion 53 of the stop plate 50 is moved to abut the locking edge 13 of the sliding slot 12 to lock the stop plate 50 of the fixed unit 10 in the sliding slot 12 of the base 16 so as to prevent from the stop plate 50 of the fixed unit 10 being moved relative to the two ratchet wheels 40.
Although the invention has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the invention.

Claims (19)

  1. CLAIMS1. A cable tightening device, comprising: a fixed unit; a movable unit rotatably mounted on the fixed unit; the fixed unit including: a base; a rotation member rotatably mounted on the base; two opposite ratchet wheels secured on two opposite ends of the rotation member to rotate the rotation member relative to the base; a stop plate movably mounted on the base and releasably engaged with the two ratchet wheels to allow the ratchet wheels to rotate relative to the base in a oneway direction; wherein the stop plate of the fixed unit has a first end provided with two locking flanges; each of the two ratchet wheels of the fixed unit has a periphery provided with a plurality of oblique oneway ratchet teeth each having a distal end provided with a locking hook locked onto a respective one of the two locking flanges of the stop plate.
  2. 2. The cable tightening device of claim 1, wherein the base of the fixed unit has two opposite sidewalls each provided with an elongate sliding slot to allow and guide movement of the stop plate; the stop plate of the fixed unit is movably mounted in the sliding slot of the base; the sliding slot of the base and has a side provided with a stepped locking edge; the stop plate of the fixed unit has a second end provided with an abutting portion that is movable to abut the locking edge of the sliding slot to lock the stop plate of the fixed unit in the sliding slot of the base.
  3. 3. The cable tightening device of claim 1, wherein each of the two locking flanges of the stop plate has a side provided with a locking space; the locking hook of each of the ratchet teeth of each of the two ratchet wheels is received in the locking space of the respective locking flange of the stop plate.
  4. 4. The cable tightening device of claim 3, wherein the locking space of each of the two locking flanges is a recess.
  5. 5. The cable tightening device of claim 1, wherein the locking hook of each of the ratchet teeth of each of the two ratchet wheels has a substantially barb-shaped profile.
  6. 6. The cable tightening device of claim 3, wherein each of the ratchet teeth of each of the two ratchet wheels has an inner side provided with a locking groove to receive the respective locking flange of the stop plate.
  7. 7. The cable tightening device of claim 2, wherein when each of the two locking flanges of the stop plate is pressed by one of the ratchet teeth of the respective ratchet wheel, the stop plate is pivoted and deflected in the sliding slot of the base, and the abutting portion of the stop plate is moved to abut the locking edge of the sliding slot to lock the stop plate of the fixed unit in the sliding slot of the base.
  8. 8. The cable tightening device of claim 3, wherein the locking space of each of the two locking flanges is a through hole extending through a whole thickness of the stop plate.
  9. 9. The cable tightening device of claim 2, wherein each of the two opposite sidewalls of the base of the fixed unit has an end portion provided with a protruding stop portion; the movable unit includes: a movable member rotatably mounted on the rotation member of the fixed unit and movable relative to the base of the fixed unit; a drive plate movably mounted on the movable member and releasably engaged with the two ratchet wheels of the fixed unit to drive the two ratchet wheels and the rotation member of the fixed unit to rotate relative to the base of the fixed unit in a oneway direction; the drive plate of the movable unit is movable relative to the base of the fixed unit to abut the stop portions of the base of the fixed unit to stop and limit a further movement of the movable member of the movable unit relative to the base of the fixed unit.
  10. 10. The cable tightening device of claim 3, wherein each of the two locking flanges of the stop plate has a bent shape and protrudes upward from the stop plate to define the locking space between each of the two locking flanges and a top of the stop plate.
  11. 11. The cable tightening device of claim 9, wherein the movable member of the movable unit has a periphery provided with at least one protruding stop block that is movable to abut a bottom of the stop plate to stop and limit a further movement of the movable member of the movable unit relative to the base of the fixed unit.
  12. 12. The cable tightening device of claim 10, wherein each of the two locking flanges of the stop plate is perpendicular to the stop plate.
  13. 13. The cable tightening device of claim 1, wherein each of the two locking flanges of the stop plate is extended and directed toward a direction which is perpendicular to a movement direction of the stop plate relative to the ratchet wheels of the fixed unit.
  14. 14. The cable tightening device of claim 1, wherein each of the two locking flanges of the stop plate has a top flush with a top face of the stop plate.
  15. 15. The cable tightening device of claim 3, wherein the locking space of each of the two locking flanges has a bottom wall located at a height smaller than that of the top of each of the two locking flanges and that of the top face of the stop plate.
  16. 16. The cable tightening device of claim 3, wherein the locking space of each of the two locking flanges extends through a whole length of each of the two locking flanges.
  17. 17. The cable tightening device of claim 1, wherein the locking hook of each of the ratchet teeth of each of the two ratchet wheels is extended and directed toward a direction which is perpendicular to the movement direction of the stop plate relative to the ratchet wheels of the fixed unit.
  18. 18. The cable tightening device of claim 6, wherein the locking groove of each of the ratchet teeth of each of the two ratchet wheels is defined between the locking hook and the periphery of each of the two ratchet wheels.
  19. 19. A cable tightening device substantially as hereinbefore described with reference to and as shown in Figures 1 to 10 of the accompanying drawings.
GB0902319A 2009-02-12 2009-02-12 Cable tightening device having a self-locking function Withdrawn GB2469262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0902319A GB2469262A (en) 2009-02-12 2009-02-12 Cable tightening device having a self-locking function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0902319A GB2469262A (en) 2009-02-12 2009-02-12 Cable tightening device having a self-locking function

Publications (2)

Publication Number Publication Date
GB0902319D0 GB0902319D0 (en) 2009-04-01
GB2469262A true GB2469262A (en) 2010-10-13

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GB0902319A Withdrawn GB2469262A (en) 2009-02-12 2009-02-12 Cable tightening device having a self-locking function

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105539264A (en) * 2015-12-31 2016-05-04 天津美格工业设计有限公司 Rope tightening device for vehicles
DE102014109954B4 (en) * 2013-07-16 2018-10-11 Load Lok International B.V. jig

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Publication number Priority date Publication date Assignee Title
GB2044873A (en) * 1978-08-14 1980-10-22 Ancra Corp Ratchet buckle for tightening and tensioning strap
DE20310296U1 (en) * 2003-07-04 2003-09-18 Westdeutscher Drahtseil-Verkauf Dolezych GmbH & Co., 44147 Dortmund Tensioning device for belts or other parts used for lashing loads, contains drive ratchet for tightening and loosening belt
US20070050952A1 (en) * 2003-12-11 2007-03-08 Hanson Burton W Bi-directional load securing ratchet method and apparatus
US7360753B1 (en) * 2006-12-27 2008-04-22 Chia-Sheng Lin Cable tightening device having anti-theft function

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2044873A (en) * 1978-08-14 1980-10-22 Ancra Corp Ratchet buckle for tightening and tensioning strap
DE20310296U1 (en) * 2003-07-04 2003-09-18 Westdeutscher Drahtseil-Verkauf Dolezych GmbH & Co., 44147 Dortmund Tensioning device for belts or other parts used for lashing loads, contains drive ratchet for tightening and loosening belt
US20070050952A1 (en) * 2003-12-11 2007-03-08 Hanson Burton W Bi-directional load securing ratchet method and apparatus
US7360753B1 (en) * 2006-12-27 2008-04-22 Chia-Sheng Lin Cable tightening device having anti-theft function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014109954B4 (en) * 2013-07-16 2018-10-11 Load Lok International B.V. jig
CN105539264A (en) * 2015-12-31 2016-05-04 天津美格工业设计有限公司 Rope tightening device for vehicles

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