CN104118592B - The vehicle safety tensioning device of pre-tension multiplication - Google Patents
The vehicle safety tensioning device of pre-tension multiplication Download PDFInfo
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- CN104118592B CN104118592B CN201410329615.9A CN201410329615A CN104118592B CN 104118592 B CN104118592 B CN 104118592B CN 201410329615 A CN201410329615 A CN 201410329615A CN 104118592 B CN104118592 B CN 104118592B
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Abstract
The present invention discloses a kind of for various automobile, lorry, trailer or motorcycle, can conveniently bundle the vehicle safety tensioning device of the pre-tension multiplication of fixing goods, comprise the take-up device main frame with main shaft, short bandage and long bandage, the one end of wherein said long bandage is connected on take-up device main frame, the one end of described short bandage is wrapped on the main shaft of take-up device main frame, and the other end of described short bandage is be connected on take-up device main frame equally. Which solving vehicle safety tensioning device operation labour-saving technical problem, staff is relatively light when the Handleset swung in its structure, not easily feels sense tired out; Its bundling operation is consuming time few simultaneously, it is possible to promote efficiency, thus further lifting economic benefit.
Description
Technical field
The present invention relates to one for various automobile, lorry, trailer or motorcycle, can conveniently bundle the device of fixing goods, particularly the vehicle safety tensioning device of a kind of pre-tension multiplication.
Background technology
Vehicle safety tensioning device is usually by take-up device main frame, short bandage and long bandage composition, the one end of short bandage and long bandage is all connected with hook, the other end of its short-and-medium bandage is directly on the main shaft being wrapped on take-up device main frame, host machine part adopts the ratchet mechanism principle of anti-reversing, directly drive initiatively ratchet by handle, initiatively ratchet promotes ratchet, ratchet directly drives main shaft, thus the short bandage tension that will be wrapped on main shaft, and stop ratchet prevents ratchet from reversing, make bandage can remain certain tension force, Goods binding is fixed.
According to mechanics relative theory, in order to make that short bandage can obtain a stable seizing force, staff just needs to apply certain force on the handle being connected at active ratchet, and this seizing force is with applying, and power is direct ratio between the two mutually, namely the applying power of staff on handle is more big, its short bandage is more big to the seizing force of goods, and the binding firmness of goods is also more high. As shown in Figure 1, owing to connecting hook on the one end of short bandage in the structure of above-mentioned existing vehicle safety tensioning device, the other end is directly be wrapped on main shaft, i.e. seizing force F on its short bandage1Relative to force when just only main shaft rotates to the winding power F of short bandage2, and the rotation of this main shaft is directly driven by the active ratchet being connected with handle. Therefore, the arm strength of staff when the seizing force on short bandage requires higher, is exactly a very big test by vehicle safety tensioning device in actual use, and people easily feels tired out, even occurs to promote the phenomenon of ratchet by initiatively ratchet. Therefore, it is necessary to existing vehicle safety tensioning device in above-mentioned is made further technological improvement.
Summary of the invention
It is an object of the invention to solve above-mentioned the deficiencies in the prior art and a kind of relative labour-saving vehicle safety tensioning device that pre-tension doubles is provided.
In order to realize above-mentioned purpose, the vehicle safety tensioning device of a kind of pre-tension multiplication designed by the present invention, comprise the take-up device main frame with main shaft, short bandage and long bandage, the one end of wherein said long bandage is connected on take-up device main frame, the one end of described short bandage is wrapped on the main shaft of take-up device main frame, and the other end is be connected on take-up device main frame equally; Described short bandage is serially connected with the first hook.
A kind of vehicle safety tensioning device in above-mentioned is in concrete use, when short bandage produces a seizing force, owing to the one end of the short-and-medium bandage of its structure has been connected on take-up device main frame, short bandage just can be produced a reactive force contrary with above-mentioned seizing force direction by the tension power restriction of long bandage by take-up device main frame, it is thus possible to reduce the applying power required for people's hand-drive main shaft rotates to a certain extent, realize laborsaving object, generally can economize the applying power of half; Equally, when the contrary applying power when the rotation of people's hand-drive main shaft is steady state value, to the seizing force of goods, (i.e. standard tension is called for short S to the short bandage in said structureTF) just can realize double.
Preferred as further technology, described take-up device main frame forms primarily of Handleset and base assembly two portions, wherein, described base assembly comprises and carries out spacing one to base side plate by the first location axle pin, one pair of ratchet, a stop ratchet and a stop ratchet torsion spring, described main shaft is between one pair of base side plate, after corresponding base side plate is run through at its both ends respectively, drive sleeve connects a ratchet, one has been offered to the first chute to base side plate is gone back symmetry described one, wherein the bottom surface of at least one the first chute is provided with the first pin, stop ratchet is applied in this in the first chute, and can slide in the first chute, stop ratchet torsion spring set is on the first pin, its one end is pushed up mutually with face in corresponding base side plate and is connect, the other end is inserted in stop ratchet, stop ratchet is driven all the time to by elastic force effect and blocks into ratchet, the one end of described long bandage is connected to of one pair of base side plate, and the one end of described short bandage is wrapped on main shaft, and its other end is connected to the other end of base side plate, described Handleset comprises and carries out spacing one to handle side plate by the 2nd location axle pin, an active ratchet and a handle, the both ends of described main shaft are all socketed a handle side plate, handle side plate is positioned at the outside of its corresponding ratchet, and fixed by locking pin, one has been offered to the 2nd chute to handle side plate is gone back symmetry described one, wherein the bottom surface of at least one the 2nd chute is provided with the 2nd pin, initiatively ratchet is applied in this in the 2nd chute, and can slide in the 2nd chute, initiatively ratchet torsion spring set is on the 2nd pin, its one end is pushed up mutually with face in corresponding handle side plate and is connect, the other end is inserted in active ratchet, initiatively ratchet is driven all the time to by elastic force effect and blocks into ratchet, described handle is connected between one pair of handle side plate. in above-mentioned further technology preferred version, the structure of take-up device main frame is simple, and firm property is good.
As further technological improvement, the concrete mode of connection of base side plate is by long bandage in above-mentioned and short bandage and one: described one to base side plate between be connected with the first pivot pin and the 2nd pivot pin, this first pivot pin and the 2nd pivot pin lay respectively at two of one pair of base side plate, the one end of described long bandage forms first lasso, first pivot pin is serially connected in this first lasso, its the other end is connected with the 2nd hook, the one end of described short bandage is wrapped on main shaft, its the other end forms the 2nd lasso, 2nd pivot pin is serially connected in the 2nd lasso. this short-and-medium bandage of further Technological improvement plan and take-up device main frame are between the two and long bandage and take-up device main frame connectivity robustness height between the two, it is possible to avoid occurring short bandage to the full extent or/and occur the phenomenon disengaged between long bandage and take-up device main frame because of seizing force.
But owing to long bandage has long and short specification, and in use, the goods of binding has greatly, there have to be little, if bundling a very little goods with a very long long bandage, and threading still from the head of long bandage, will certainly be affected bundle speed of tying up, affect working efficiency. Therefore, as further technological improvement, in above-mentioned one has offered one pair of bar-shaped trough to going back symmetry on base side plate, bar-shaped trough is closed on the first pivot pin by this, and it is positioned at outside it, in one pair of bar-shaped trough, activity runs through bolted external member, described long bandage is rugosity, and form the first lasso at its folding place, described bolted external member is serially connected in the first lasso, and the first backward outer extension of pivot pin is walked around at the both ends of long bandage jointly, and one of this two outside extended end portion is connected with the 2nd hook. The vehicle safety tensioning device of said structure is in concrete use, when encountering the goods that the longer long bandage of length goes binding volume less, threading is without the need to again from the end of long bandage, only need to be folding once at the applicable section of long bandage, and form the first lasso, a bolted external member is run through in above-mentioned first lasso, then to be inserted on base side plate symmetrical offer one in bar-shaped trough, subsequently the two ends of long bandage are walked around the first pivot pin is backward outer to be extended, thus effectively shorten goods tie up bundle speed, improve working efficiency.
As further technological improvement, bolted external member in above-mentioned includes bolt and nut, any one in two described bar-shaped troughs is in big, little circle intersects shape structure, and big circular portion is positioned at the outside of little circular portion, wherein the screw portion of bolt runs through two described bar-shaped troughs, and extend outside base side plate, the base side plate outer wall of its bolt head part and respective side keeps off mutually and connecing, nut is screwed on screw portion until keeping off mutually with the base side plate outer wall of respective side and connecing, and the maximum external diameter value of described nut is greater than the inner diameter values of little circular portion, but the inner diameter values of big circular portion it is less than. this bolted external member being further made up of bolt and nut in Technological improvement plan just can insert above-mentioned one in bar-shaped trough or always this is taken off in bar-shaped trough easily without the need to carrying out dismounting, therefore, shortening goods that can be further tie up bundle speed, improve working efficiency.
The vehicle safety tensioning device of pre-tension that the present invention obtains multiplication is in concrete use, and staff is relatively light when swinging its Handleset, and staff not easily feels sense tired out; Its bundling operation is consuming time few simultaneously, it is possible to promote efficiency, thus further lifting economic benefit.
Accompanying drawing explanation
Fig. 1 is the mechanics schematic diagram of the short-and-medium bandage of vehicle safety tensioning device of pre existing tension multiplication;
Fig. 2 is the structural representation of the vehicle safety tensioning device that embodiment 1 is provided a kind of pre-tension to double;
Fig. 3 be embodiment 1 provided a kind of pre-tension to double vehicle safety tensioning device in the perspective view of take-up device main frame;
Fig. 4 be embodiment 1 provided a kind of pre-tension to double vehicle safety tensioning device in the top surface structure schematic diagram of take-up device main frame;
Fig. 5 be embodiment 1 provided a kind of pre-tension to double vehicle safety tensioning device in the side structure schematic diagram of take-up device main frame;
Fig. 6 is the partial enlargement schematic diagram at A place in Fig. 5;
Fig. 7 is the section structure schematic diagram of the vehicle safety tensioning device that embodiment 1 is provided a kind of pre-tension to double;
Fig. 8 is the mechanics schematic diagram of the short-and-medium bandage of vehicle safety tensioning device that embodiment 1 is provided a kind of pre-tension to double;
Fig. 9 be embodiment 2 provided a kind of pre-tension to double vehicle safety tensioning device in the structural representation of base assembly;
Figure 10 be embodiment 2 provided a kind of pre-tension to double vehicle safety tensioning device in the structural representation of take-up device main frame;
Figure 11 is the section structure schematic diagram of the vehicle safety tensioning device that embodiment 2 is provided a kind of pre-tension to double;
Figure 12 be embodiment 3 provided a kind of pre-tension to double vehicle safety tensioning device in the top surface structure schematic diagram of take-up device main frame.
In figure: take-up device main frame 1, short bandage 2, long bandage 3, first location axle pin 4, base side plate 5, ratchet 6, stop ratchet 7, stop ratchet torsion spring 8, first chute 9, first pin 10, first pivot pin 11, 2nd pivot pin 12, first lasso 13, first hook 14, handle side plate 15, initiatively ratchet 16, handle 17, 2nd location axle pin 18, locking pin 19, 2nd chute 20, 2nd pin 21, bar-shaped trough 22, bolted external member 23, big circular portion 24, little circular portion 25, bolt 26, nut 27, screw portion 28, bolt head part 29, main shaft 30, initiatively ratchet torsion spring 31, 2nd lasso 32, 2nd hook 33.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1:
As shown in Figure 2, the vehicle safety tensioning device of a kind of pre-tension multiplication provided in the present embodiment, comprising the take-up device main frame 1 with main shaft 30, short bandage 2 and long bandage 3, the take-up device main frame 1 as described in Fig. 3-7 forms primarily of Handleset and base assembly two portions, wherein, described base assembly comprises and carries out spacing one to base side plate 5 by the first location axle pin 4, one pair of ratchet 6, a stop ratchet 7 and a stop ratchet torsion spring 8, described main shaft 30 is between one pair of base side plate 5, the rear drive sleeve of the base side plate 5 that its both ends run through corresponding respectively connects a ratchet 6, one has been offered to the first chute 9 to base side plate 5 is gone back symmetry described one, the bottom surface of one of them the first chute 9 is provided with the first pin 10, stop ratchet 7 is applied in this in the first chute 9, and can slide in the first chute 9, stop ratchet torsion spring 8 is enclosed within the first pin 10, its one end is pushed up mutually with face in corresponding base side plate 5 and is connect, the other end is inserted in stop ratchet 7, stop ratchet 7 is driven all the time to by elastic force effect and blocks into ratchet 6, described one to base side plate 5 between be also connected with the first pivot pin 11 and the 2nd pivot pin 12, this first pivot pin 11 and the 2nd pivot pin 12 lay respectively at two of one pair of base side plate 5, the one end of described long bandage 3 forms first lasso 13, first pivot pin 11 is serially connected in this first lasso 13, its the other end is connected with the 2nd hook 33, the one end of described short bandage 2 is wrapped on main shaft 30, its the other end forms the 2nd lasso 32,2nd pivot pin 12 is serially connected in the 2nd lasso 32, and is serially connected with the first hook 14 on short bandage 2. described Handleset comprises and carries out spacing one to handle side plate 15 by the 2nd location axle pin 18, an active ratchet 16 and a handle 17, the both ends of described main shaft 30 are all socketed a handle side plate 15, handle side plate 15 is positioned at the outside of its corresponding ratchet 6, and fixed by locking pin 19, one has been offered to the 2nd chute 20 to handle side plate 15 is gone back symmetry described one, the bottom surface of one of them the 2nd chute 20 is provided with the 2nd pin 21, initiatively ratchet 16 is applied in this in the 2nd chute 20, and can slide in the 2nd chute 20, initiatively ratchet torsion spring 31 is enclosed within the 2nd pin 21, its one end is pushed up mutually with face in corresponding handle side plate 15 and is connect, the other end is inserted in active ratchet 16, initiatively ratchet 16 is driven all the time to by elastic force effect and blocks into ratchet 6, described handle 17 is connected between one pair of handle side plate 15.
During operation, staff applies power on Handleset, and the active ratchet 16 in Handleset promotes ratchet 6 to rotate, ratchet 6 drives main shaft 30 to rotate again, is wrapped on main shaft 30 by short bandage 2, repeatable operation handle 17, the seizing force needed can be obtained, Goods binding is fixed.
During release, stop ratchet 7 in active ratchet 16 in Handleset and base group valency is all disengaged with ratchet 6, now all not by any power in the axial sense of rotation of ratchet 6, when staff pulls short bandage, it is wrapped on the short bandage 2 on main shaft 30 and can be discharged.
As shown in Figure 8, the vehicle safety tensioning device of a kind of pre-tension in above-mentioned multiplication in concrete use, when short bandage 2 produces a seizing force F1Time, owing to the one end of the short-and-medium bandage 2 of its structure has been connected on take-up device main frame 1, short bandage 2 just can be produced one and above-mentioned seizing force F by the tension power restriction of long bandage 3 by take-up device main frame 11The reactive force F that direction is contrary3Such that it is able to reduce people's hand-drive main shaft 30 to a certain extent and rotate required applying power F2, it is achieved laborsaving object, generally can economize the applying power F2 of half; Equally, when the contrary applying power F2 when the rotation of people's hand-drive main shaft 30 is steady state value, to the seizing force of goods, (i.e. standard tension is called for short S to the short bandage 2 in said structureTF) just can realize double, promote binding quality.
Embodiment 2:
As shown in figs. 9-11, the vehicle safety tensioning device of a kind of pre-tension multiplication provided in the present embodiment, its general structure is consistent with embodiment 1, but owing to long bandage 3 has long and short specification, and in use, the goods of binding has greatly, there have to be little, if bundling a very little goods with a very long long bandage 3, and threading still from the head of long bandage 3, will certainly be affected bundle speed of tying up, affect working efficiency. Therefore, in the present embodiment one has offered one pair of bar-shaped trough 22 to going back symmetry on base side plate 5, bar-shaped trough 22 is closed on the first pivot pin 11 by this, and it is positioned at outside it, in one pair of bar-shaped trough 22, activity runs through bolted external member 23, described long bandage 3 is in rugosity, and form the first lasso 13 at its folding place, described bolted external member 23 is serially connected in the first lasso 13, and the first backward outer extension of pivot pin 11 is walked around at the both ends of long bandage 3 jointly, and one of this two outside extended end portion is connected with the 2nd hook 33.
The vehicle safety tensioning device of the pre-tension multiplication of said structure is in concrete use, when encountering the goods that the longer long bandage 3 of length goes binding volume less, threading is without the need to again from the end of long bandage 3, only need to be folding once at the applicable section of long bandage 3, and form the first lasso 13, a bolted external member 23 is run through in above-mentioned first lasso 13, then to be inserted on base side plate 5 symmetrical offer one in bar-shaped trough 22, subsequently the two ends of long bandage 3 are walked around the first pivot pin 11 is backward outer to be extended, thus effectively shorten goods tie up bundle speed, improve working efficiency.
Embodiment 3:
The vehicle safety tensioning device of a kind of pre-tension multiplication provided in the present embodiment, its general structure is consistent with embodiment 2, as shown in figure 12, but the bolted external member 23 in the present embodiment includes bolt 26 and nut 27, any one in two described bar-shaped troughs 22 is in big, little circle intersects shape structure, and big circular portion 24 is positioned at the outside of little circular portion 25, wherein the screw portion 28 of bolt 26 runs through two described bar-shaped troughs 22, and extend outside base side plate 5, base side plate 5 outer wall of its bolt head part 29 and respective side keeps off mutually and connecing, nut 27 is screwed on screw portion 28 until keeping off mutually with base side plate 5 outer wall of respective side and connecing, and the maximum external diameter value of described nut 27 is greater than the inner diameter values of little circular portion 25, but the inner diameter values of big circular portion 24 it is less than.
The bolted external member 23 being made up of bolt 26 and nut 27 in above-mentioned just can insert above-mentioned one to bar-shaped trough 22 is interior or always this is taken off in bar-shaped trough 22 easily without the need to carrying out dismounting, therefore, shortening goods that can be further tie up bundle speed, improve working efficiency.
Claims (2)
1. the vehicle safety tensioning device of a pre-tension multiplication, comprise with the take-up device main frame (1) of main shaft (30), short bandage (2) and long bandage (3), the one end of wherein said long bandage (3) is connected on take-up device main frame (1), the one end of described short bandage (2) is wrapped on the main shaft (30) of take-up device main frame (1), it is characterized in that the other end of described short bandage (2) is be connected on take-up device main frame (1) equally, described short bandage (2) is serially connected with the first hook (14), described take-up device main frame (1) forms primarily of Handleset and base assembly two portions, wherein, described base assembly comprises and carries out spacing one to base side plate (5) by the first location axle pin (4), one pair of ratchet (6), a stop ratchet (7) and stop ratchet torsion spring (8), described main shaft (30) is positioned between one pair of base side plate (5), its both ends run through respectively corresponding base side plate (5) afterwards drive sleeve connect a ratchet (6), described one, the upper also symmetry of base side plate (5) is offered one to the first chute (9), wherein the bottom surface of at least one the first chute (9) is provided with the first pin (10), stop ratchet (7) is applied in this in the first chute (9), and can slide in the first chute (9), stop ratchet torsion spring (8) is enclosed within the first pin (10), its one end is pushed up mutually with corresponding base side plate (5) interior face and is connect, the other end is inserted in stop ratchet (7), stop ratchet (7) is driven all the time to by elastic force effect and blocks into ratchet (6), the one end of described long bandage (3) is connected to of one pair of base side plate (5), and the one end of described short bandage (2) is wrapped on main shaft (30), and its other end is connected to the other end of base side plate (5), described Handleset comprises and carries out spacing one to handle side plate (15) by the 2nd location axle pin (18), active ratchet (16) and a handle (17), the both ends of described main shaft (30) are all socketed a handle side plate (15), handle side plate (15) is positioned at the outside of its corresponding ratchet (6), and fixed by locking pin (19), described one, the upper also symmetry of handle side plate (15) is offered one to the 2nd chute (20), wherein the bottom surface of at least one the 2nd chute (20) is provided with the 2nd pin (21), initiatively ratchet (16) is applied in this in the 2nd chute (20), and can slide in the 2nd chute (20), initiatively ratchet torsion spring (31) is enclosed within the 2nd pin (21), its one end is pushed up mutually with corresponding handle side plate (15) interior face and is connect, the other end is inserted in active ratchet (16), initiatively ratchet (16) is driven all the time to by elastic force effect and blocks into ratchet (6), described handle (17) is connected between one pair of handle side plate (15), the concrete mode of connection of base side plate (5) is by described long bandage (3) and short bandage (2) and one: described one to base side plate (5) between be connected with the first pivot pin (11) and the 2nd pivot pin (12), this first pivot pin (11) and the 2nd pivot pin (12) lay respectively at two of one pair of base side plate (5), described one to base side plate (5) has also been offered one pair of bar-shaped trough (22), bar-shaped trough (22) is closed on the first pivot pin (11) by this, and it is positioned at outside it, in one pair of bar-shaped trough (22), activity runs through bolt (26) fastening kit (23), described long bandage (3) is in rugosity, and form the first lasso (13) at its folding place, described bolted external member (23) is serially connected in the first lasso (13), and the backward outer extension of the first pivot pin (11) is walked around at the both ends of long bandage (3) jointly, the one end of described short bandage (2) is wrapped on main shaft (30), its the other end forms the 2nd lasso (32), 2nd pivot pin (12) is serially connected in the 2nd lasso (32),Described bolted external member (23) includes bolt (26) and nut (27), any one in two described bar-shaped troughs (22) is in big, little circle intersects shape structure, and big circular portion (24) is positioned at the outside of little circular portion (25), wherein the screw portion (28) of bolt (26) runs through two described bar-shaped troughs (22), and extend base side plate (5) outward, base side plate (5) outer wall of its bolt head part (29) and respective side keeps off mutually and connecing, it is upper until keep off mutually with base side plate (5) outer wall of respective side and connecing that nut (27) is screwed in screw portion (28), and the maximum external diameter value of described nut (27) is greater than the inner diameter values of little circular portion (25), but the inner diameter values of big circular portion (24) it is less than.
2. the vehicle safety tensioning device of a kind of pre-tension according to claim 1 multiplication, is characterized in that one of outside extended end portion of the two of described long bandage (3) is connected with the 2nd hook (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410329615.9A CN104118592B (en) | 2014-07-11 | 2014-07-11 | The vehicle safety tensioning device of pre-tension multiplication |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410329615.9A CN104118592B (en) | 2014-07-11 | 2014-07-11 | The vehicle safety tensioning device of pre-tension multiplication |
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| CN104118592A CN104118592A (en) | 2014-10-29 |
| CN104118592B true CN104118592B (en) | 2016-06-01 |
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| US7281701B1 (en) * | 2006-12-22 | 2007-10-16 | Han-Ching Huang | Fastener for straps |
| CN200970743Y (en) * | 2006-11-10 | 2007-11-07 | 陈伟国 | Expansion tensioning machine |
| CN202294474U (en) * | 2011-07-29 | 2012-07-04 | 宁波旭力金属制品有限公司 | Tension readable automobile safety tensioning device |
| CN103625353A (en) * | 2013-12-18 | 2014-03-12 | 宁波旭力金属制品有限公司 | Automobile safety tension device with adjustable position |
| CN103863171A (en) * | 2014-03-28 | 2014-06-18 | 宁波旭力金属制品有限公司 | Automobile safety tensioning device with multiplied tension |
| CN203921255U (en) * | 2014-07-11 | 2014-11-05 | 宁波市北仑森盛机械有限公司 | The vehicle safety tensioning device of pre-tension multiplication |
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2014
- 2014-07-11 CN CN201410329615.9A patent/CN104118592B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200970743Y (en) * | 2006-11-10 | 2007-11-07 | 陈伟国 | Expansion tensioning machine |
| US7281701B1 (en) * | 2006-12-22 | 2007-10-16 | Han-Ching Huang | Fastener for straps |
| CN202294474U (en) * | 2011-07-29 | 2012-07-04 | 宁波旭力金属制品有限公司 | Tension readable automobile safety tensioning device |
| CN103625353A (en) * | 2013-12-18 | 2014-03-12 | 宁波旭力金属制品有限公司 | Automobile safety tension device with adjustable position |
| CN103863171A (en) * | 2014-03-28 | 2014-06-18 | 宁波旭力金属制品有限公司 | Automobile safety tensioning device with multiplied tension |
| CN203921255U (en) * | 2014-07-11 | 2014-11-05 | 宁波市北仑森盛机械有限公司 | The vehicle safety tensioning device of pre-tension multiplication |
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| CN104118592A (en) | 2014-10-29 |
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