CN1575933A - Tension device for strap or likes - Google Patents
Tension device for strap or likes Download PDFInfo
- Publication number
- CN1575933A CN1575933A CN 200410062101 CN200410062101A CN1575933A CN 1575933 A CN1575933 A CN 1575933A CN 200410062101 CN200410062101 CN 200410062101 CN 200410062101 A CN200410062101 A CN 200410062101A CN 1575933 A CN1575933 A CN 1575933A
- Authority
- CN
- China
- Prior art keywords
- ratchet
- tensioning
- belt
- tension device
- driving
- 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.)
- Granted
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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
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Package Frames And Binding Bands (AREA)
Abstract
A tension device for straps or analogous clamping members comprises a tensioning frame (1), a tensioning hand shank (2) installed at the tensioning frame (1) in a rotary mode, a tape winding shaft (3) used for startup and rotatablely mounted at the tensioning frame (1), and a driving locking mechanism (4, 5, 6) having a driving ratchet pawl (5) and a locking ratchet pawl (6), wherein the driving ratchet pawl (5) engages with at least one ratchet wheel (4). In accordance with the present invention, in order to unclamp a strap step by step, the driving ratchet pawl (5) and the locking ratchet pawl (6) engage alternately with the ratchet wheel (4).
Description
Technical field
The present invention relates to be used for the tension device of belt or similar gripping members, it comprises a tensioning frame, also comprise a tensioning handle, be rotatably installed on the tensioning frame, be used to start rotation and be installed in a belt spool on the tensioning frame, comprise that also one drives and locking framework, have one and drive a ratchet and a locking pawl, drive ratchet and engage with at least one ratchet.
Background technique
Such tension device is known fully, for example referring to document EP 0455085B1, DE19652109C2 and DE3344487C1.
The tension device of prior art is effectively, the feasibility aspect that particularly relates to progressively rather than suddenly unclamp belt.Yet with respect to the background of the solution that comprises suitable machinery or structural effort that proposes in some cases, they can improve.This is particularly useful for the instruction among the document EP 0455085B1.This is owing to except driving sliding block and driving ratchet, also be provided with two lock sliders that engage with locking wheel or ratchet.Each lock slider is movably in an independent carriage direct part.This needs a plurality of members and makes assembling or install complicated.The present invention is intended to overcome this defective.
Summary of the invention
The technical problem that the present invention is based on is further to improve the belt tension device of the initial type of describing, and makes designs simplification, the cost reduction, but have identical functions.
In order to solve this technical problem, tension device within the scope of the present invention is characterised in that, in order to unclamp belt step by step, drives ratchet and locking pawl and alternately engages with ratchet.
According to the instruction of document EP 0455085B1, tension device of the present invention makes it possible to unclamp step by step the belt of tensioning, and tooth ground of a tooth carries out.Yet different with known method, the present invention depends on the driving ratchet that links together with locking pawl.Drive ratchet and locking pawl thereby replaced two lock sliders among the document EP 0455085B1.
Under these circumstances, drive ratchet and have dual functions.On the one hand, the driving ratchet that is connected with the tensioning handle guarantees that the belt spool is along the tension direction of the tensioning handle belt of the common rolling of tensioning gradually.On the other hand, for unclamping belt, drive ratchet at this moment along the direction opposite with tension direction, be that the direction of unclamping of tensioning handle is used.Obtain a kind of simple especially structure thus, its function is identical with the function of prior art.
Particularly, instruction according to the present invention has prevented that the belt of tensioning from suddenly unclamping.On the contrary, in this case, belt unclamps on tooth ground of a tooth equally step by step.Different with the instruction of document DE19652109C2, the additional guiding side plate that is used for the belt fixing bolt can save, and promptly in this case, has realized the reduction of manufacture cost.Consider document DE3240993C2, also can use these equally.At last, if also consider document DE19720910A1, it can not unclamp the belt of tensioning suddenly this point and foreclose.The present invention has overcome all problems by so a kind of structure, this structure simplicity of design and having superiority especially aspect cost.
In this case, be very favourable if alternately engaging between verified driving ratchet and the locking pawl finished by at least one cam.This cam is connected on the tensioning frame separately usually, but also forms and described tensioning frame all-in-one-piece member basically.Cam is usually located between the side of the tensioning handle that is located at the roll of tape shaft end respectively and ratchet.
In addition, in most of the cases, the tensioning block is set for driving ratchet.This tensioning block has guaranteed to drive ratchet and tensioning handle only can realize certain angle of inclination along tension direction.Drive function from it and be transformed into release function in order to drive ratchet, need be along the direction opposite, promptly unclamp direction and make and drive ratchet and move and cross related tensioning block with tension direction.In this case, cam opposite with tension direction, only act on the opposite side of tensioning block.
That is to say, in order to use the driving ratchet to unclamp the belt spool, drive ratchet and must move to cross the tensioning block and enter cam subsequently and act on the operating space that drives on ratchet and the locking pawl simultaneously, they are alternately engaged with ratchet during progressively the unclamping of belt.
As described, in order to unclamp belt step by step, the tensioning handle is along the unclamp direction effect opposite with tension direction, and cam acts on simultaneously and drives on ratchet and the locking pawl.When the driving ratchet is installed on the tensioning handle with longitudinal movement, these can be finished admirably.For this reason, the driving ratchet can have the extension in the cannelure that is directed into the tensioning handle in both sides.
Drive ratchet and locking pawl usually on the ratchet direction by spring-loaded, make and can finish required tensioning and unclamp.
Therefore, provide structure simple especially tension device, can additionally prevent the unclamping of anything unexpected of tensioning belt with uncontrolled, this be because described belt can only be step by step, promptly tooth ground of a tooth unclamps.This function is finished by uncomplicated especially and low-cost configuration, not only has the driving function because drive ratchet, but also has release function.Can see the advantage that it is main at this.
Description of drawings
Describe the present invention in detail referring now to accompanying drawing, accompanying drawing only illustrates an exemplary embodiment.
Fig. 1 is the stereogram according to tension device of the present invention;
Thin portion view among Fig. 1 when Fig. 2 illustrates the belt tensioning;
Fig. 1 when Fig. 3 and Fig. 4 illustrate belt and unclamp and the thin portion among Fig. 2.
Embodiment
Accompanying drawing illustrates a kind of tension device that is used for tensioning belt or analog, its basic structure comprises: 1, one tensioning handle 2 of a tensioning frame is installed on the tensioning frame 1 rotationally, be used for starting and rotate a belt spool 3 that is installed on the tensioning frame 1, and driving and locking framework 4,5,6.Drive and locking framework 4,5,6 constitutes at the ratchet 4 of belt spool 3 ends, a driving ratchet 5 and a locking pawl 6 respectively by two substantially.Locking pawl 6 has two hook tooths that are respectively applied for two ratchets 4.
Driving ratchet 5 vertically is installed in the tensioning handle 2 movably.For this reason, this driving ratchet 5 has the extension, side 7 in the cannelure 8 that is bonded on tensioning handle 2.A handle 9 is in the extension that vertically is located at driving ratchet 5 of tensioning handle 2, and by means of this, driving ratchet 5 is being resisted the elastic force of spring 10 and can thrown off with the single tooth of ratchet 4 and engage.Need not manually-operable, spring 10 is guaranteed to drive ratchet 5 and is relied on the corresponding ratchet 4 or between the single tooth in ratchet 4 ground.
In order to use belt of above-mentioned tension device tensioning, on belt spool 3, spool has a groove for this reason with roll of tape.If start tensioning handle 2 along tension direction (direction of arrow 11 among Fig. 1 and 2), locking pawl 6 is under the assistance of spring, slide along the flank of tooth of the slight inclination of the tooth of ratchet 4, and arrive between corresponding two teeth, make the belt that has been involved in and has continued to be wrapped on the belt spool 3 (no longer) unexpectedly not unclamp along opposite direction.
Within the scope of the invention, belt can unclamp step by step, particularly alternately engages with corresponding ratchet 4 by driving ratchet 5 and locking pawl 6.This finishes by a cam 12, and cam is used when direction 13 is moved along unclamping shown in Fig. 3 and 4 at tensioning handle 2.Cam 12 is positioned on the tensioning handle 2, and especially respectively between the side and corresponding ratchet 4 of tensioning handle 2.In this case, use two cams 12 that are located at respectively on belt spool 3 ends.
Above-mentioned cam 12 is along the direction opposite with tension direction 11, promptly unclamp the opposite side that direction 13 only acts on a tensioning block 14.This tensioning block 14 guarantees to drive ratchet 5 in all cases, only extend along tension direction 11 on several angle α, this angle is greater than 90 °, and is about 100 ° to 120 ° according to exemplary embodiment.Bigger angle [alpha] also is feasible naturally, and is covered by the present invention.
According to unshowned a kind of modification, cam 12 can act on simultaneously and drive on ratchet 5 and the locking pawl 6.Yet, in the scope that illustrates, if necessary, have only locking pawl 6 relying on cam 12, also can tilt and drive ratchet 5 free-running operations with tensioning handle 2.
If tensioning handle 2 moves along unclamping direction 13, in first step, cam 12 is guaranteed locking pawl 6 and relevant tooth disengagement.This is shown in Figure 4.Because belt spool 3 is subjected to the tension force from belt, belt spool 3 turns an angle widdershins.
Yet because after the angle of swing of the spacing between common corresponding two teeth, driving ratchet 5 collides a tooth or belt spool 3 stops, the motion that this is counterclockwise stops.This is also shown in Figure 4.
On the contrary, Fig. 3 illustrates the beginning of release process, and wherein, tensioning handle 2 moves along unclamping direction 13, and it is therewith mobile to drive ratchet 5.Because so counterclockwise motion, at first, locking pawl 6 is lifted by cam 12, then, drives ratchet 5 flank of tooth against next tooth under the assistance of spring.Belt spool 3 and ratchet therewith 4 can rotate counterclockwise, until driving the precipitous flank of tooth that ratchet 5 collides tooth, as shown in Figure 4.
In next release process, locking pawl 6 will (again) against corresponding ratchet 4, be lifted and drive ratchet 5, make belt spool 3 further to rotate around another tooth.Thus, tensioning handle 2 guarantees along the direction opposite with tension direction 11, promptly to unclamp progressively the unclamping of belt of direction 13.
Claims (7)
1. tension device that is used for belt or similar gripping members, it comprises:
-one tensioning frame (1) also comprises,
-one tensioning handle (2) is rotatably installed on the tensioning frame (1), and be used for starting being rotatably installed in a belt spool (3) of tensioning frame (1), and comprise,
-one driving and locking framework (4,5,6) have one and drive a ratchet (5) and a locking pawl (6), and the driving ratchet engages with at least one ratchet (4),
It is characterized by,, drive ratchet (5) and locking pawl (6) and alternately engage with ratchet (4) for progressively unclamping of belt.
2. tension device as claimed in claim 1 is characterized by, and drives alternately engaging of ratchet (5) and locking pawl (6) and finishes by at least one cam (12).
3. tension device as claimed in claim 1 or 2 is characterized by, and cam (12) acts on simultaneously and drives on ratchet (5) and the locking pawl (6).
4. as each described tension device in the claim 1 to 3, it is characterized by, for driving ratchet (5) a tensioning block (14) is set, cam (12) is along the opposite side of the directive effect opposite with the tension direction (11) of tensioning handle (2) in tensioning block (14).
5. as each described tension device in the claim 1 to 4, it is characterized by, for progressively unclamping of belt, tensioning handle (2) is applied along the direction (13) of unclamping opposite with tension direction (11).
6. as each described tension device in the claim 1 to 5, it is characterized by, drive ratchet (5) and be installed in longitudinal movement on the tensioning handle (2).
7. as each described tension device in the claim 1 to 6, it is characterized by, drive ratchet (5) and locking pawl (6) on ratchet (4) direction by spring-loaded.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20310296.7 | 2003-07-04 | ||
DE20310296U DE20310296U1 (en) | 2003-07-04 | 2003-07-04 | Tensioning device for belts or other parts used for lashing loads, contains drive ratchet for tightening and loosening belt |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1575933A true CN1575933A (en) | 2005-02-09 |
CN1274468C CN1274468C (en) | 2006-09-13 |
Family
ID=28459220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 200410062101 Expired - Fee Related CN1274468C (en) | 2003-07-04 | 2004-07-02 | Tension device for strap or likes |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN1274468C (en) |
DE (1) | DE20310296U1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102958752A (en) * | 2011-01-11 | 2013-03-06 | 浙江双友物流器械股份有限公司 | Load-strap tensioning device |
CN110594359A (en) * | 2019-09-17 | 2019-12-20 | 盘锦森达鑫石油技术有限公司 | Traction fixing self-locking device capable of realizing multistage protection and application thereof |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6880810B1 (en) * | 2003-10-14 | 2005-04-19 | Ratchet Co., Ltd. | Belt reel assembly for fastening goods on a truck |
DE202007019144U1 (en) | 2007-12-15 | 2010-09-30 | Westdeutscher Drahtseil-Verkauf Dolezych Gmbh & Co. | Device for producing tensioning devices |
GB2469262A (en) * | 2009-02-12 | 2010-10-13 | Win Chance Metal Co Ltd | Cable tightening device having a self-locking function |
-
2003
- 2003-07-04 DE DE20310296U patent/DE20310296U1/en not_active Expired - Lifetime
-
2004
- 2004-07-02 CN CN 200410062101 patent/CN1274468C/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102958752A (en) * | 2011-01-11 | 2013-03-06 | 浙江双友物流器械股份有限公司 | Load-strap tensioning device |
CN102958752B (en) * | 2011-01-11 | 2016-06-22 | 浙江双友物流器械股份有限公司 | Load-strap tensioner |
CN110594359A (en) * | 2019-09-17 | 2019-12-20 | 盘锦森达鑫石油技术有限公司 | Traction fixing self-locking device capable of realizing multistage protection and application thereof |
Also Published As
Publication number | Publication date |
---|---|
DE20310296U1 (en) | 2003-09-18 |
CN1274468C (en) | 2006-09-13 |
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060913 |