CN1262981A - Ratchet and its ratchet drive tool - Google Patents
Ratchet and its ratchet drive tool Download PDFInfo
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- CN1262981A CN1262981A CN 00103465 CN00103465A CN1262981A CN 1262981 A CN1262981 A CN 1262981A CN 00103465 CN00103465 CN 00103465 CN 00103465 A CN00103465 A CN 00103465A CN 1262981 A CN1262981 A CN 1262981A
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- ratchet
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- arc tooth
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- 238000007688 edging Methods 0.000 claims description 8
- 238000005495 investment casting Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 4
- 210000001015 abdomen Anatomy 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The present invention relates to a ratchet wheel and its ratchet-driving tool,and said ratchet wheel includes internal and external surfaces, external surface is equipped with several inward concave teeth, and every inward concave tooth possesses two sides and crossing point of two sides, and the angle between said two sides is divided into two portions by means of line from centre of ratchet wheel to the crossing point to form asymmetrical inward concave arc or non-arc tooth and symmetrical inward concave non-arc tooth. Said ratchet-driving tool includes handle, end portion connected with the handle, ratchet wheel possessing the above-mentioned structure and capable of mounting in the hole of end portion in turnable mode and ratchet pawl which is mounted in hand-receiving chamber in sliding mode and combined with the ratchet wheel. It is good in struture strength, can raise torque and its prodution speed is rapid.
Description
The present invention relates to a kind of hand-operated tools, relate to a kind of ratchet-driven tool that has the ratchet of asymmetry indent arc tooth or the non-arc tooth of indent and use this ratchet or rather.
Spanner is a kind of common tool, and multiple structure is arranged, and during for the fixture that will rotate in the small space that is difficult to stretch into and is difficult to the various ratchet-driven tools of operation as nut, bolt one class, it is best using the effect of double offset ring spanner.Yet the torque of traditional double offset ring spanner is lower, so people advise using the ratchet-type double offset ring spanner.The casket end inside of ratchet-type double offset ring spanner is equiped with ratchet, so as under high torque rotational fixture.But,, and the structural strength of ratchet is reduced because the surface, outside of ratchet must be processed to form the arc tooth of the suitable degree of depth.
Figure 11 to Figure 13 illustrates a kind of traditional ratchet 1 that is installed in double offset ring spanner casket end inside, has the interior circumferential surface 4 and the surface, outside that drive fixture, and the surface, outside is provided with a plurality of concave shaped teeth 3, as shown in Figure 11.In conjunction with referring to Figure 12, Figure 13, it is being d transverse to the degree of depth of the feed 2 formed indent arc teeth 3 of (OR) direction radially that each indent arc tooth 3 utilizes, intersect at a R place on indent arc tooth 3 two limits, the OR line is divided into two with the folded angle α in indent arc tooth 3 two limits and equates part, usually respectively be 45 °, each concave shaped tooth 3 influences the structural strength of ratchet 1 itself because of being worked into suitable depth d, because the residual wall thickness t of ratchet 1 is very little, consequently make ratchet 1 provide limited rotation torque to fixture.
The casket end 9a inside of double offset ring spanner 9 shown in Figure 17 is equiped with the ratchet 5 of traditional structure, as shown in Figure 14 to Figure 16, has the interior circumferential surface 8 and the surface, outside that drive fixture, and the surface, outside is provided with a plurality of indent arc teeth 6, as shown in Figure 14.In conjunction with referring to Figure 15, Figure 16, each indent arc tooth utilizes in the degree of depth of the direction feed 7 formed indent arc teeth 6 of OR radially and is d, intersect at a R place on indent arc tooth 6 both sides, the OR line is divided into two with the folded angle β in indent arc tooth 6 both sides and equates part, usually respectively be 45 °, each indent arc tooth 6 is also because of being worked into the structural strength that suitable depth d has influence on ratchet 5 itself, because the residual wall thickness t of ratchet 5 is very little, consequently make ratchet 5 provide limited rotation torque to fixture.
The structure of above-mentioned ratchet 5 goes up openly at Taiwan patent gazette No. 281946 " drives structure of hand-held tool () ", and another shortcoming of the traditional ratchet structure of this kind is to utilize cutting formation indent arc tooth 6 speed too slow.
The objective of the invention is to design a kind of ratchet and ratchet-driven tool thereof, can overcome the shortcoming of above-mentioned ratchet, improve torque to strengthen structural strength, and speed of production is fast.
The object of the present invention is achieved like this: a kind of ratchet, circumferential surface and surface, outside in including, the surface, outside is provided with more than one indent tooth, it is characterized in that: described each indent tooth has the intersection point on both sides and both sides, and the ratchet center is divided into equal or unequal two parts to the line of intersection point with the angle between the both sides.
The symmetric indent arc of described indent tooth right and wrong tooth, described ratchet center is divided into unequal two parts to the line of intersection point with the angle between the both sides.
The non-arc tooth of the symmetric indent of described indent tooth right and wrong, described ratchet center is divided into unequal two parts to the line of intersection point with the angle between the both sides.
The non-arc tooth of the indent of described asymmetry is forming without stock removal.
The non-arc tooth of the indent of described asymmetry utilizes edging to be pressed into shape.
The non-arc tooth of the indent of described asymmetry utilizes lost wax casting to be shaped.
The non-arc tooth of the indent of described asymmetry is trapezoidal.
Described indent tooth is the non-arc tooth of symmetric indent, and described ratchet center is divided into two equal parts to the line of intersection point with the angle between the both sides.
The non-arc tooth of described symmetric indent is forming without stock removal.
The non-arc tooth of described symmetric indent utilizes edging to be pressed into shape.
The non-arc tooth of described symmetric indent utilizes lost wax casting to be shaped.
The non-arc tooth of described symmetric indent is trapezoidal.
A kind of ratchet-driven tool of the present invention comprises handle and the end that is connected with handle, ratchet and pawl, and described end is provided with a hole, is provided with a room between handle and the end; Described ratchet is installed in the hole on the end in rotating mode, circumferential surface and surface, outside in described ratchet includes, and the surface, outside is provided with more than one indent tooth; Described ratchet slidably is installed in the room and with ratchet and combines, ratchet is provided with the tooth that cooperates with the indent tooth of ratchet more than, described ratchet biasing is towards the wall of room, it is characterized in that: each indent tooth of described ratchet has the intersection point on both sides and both sides, and the ratchet center is divided into equal or unequal two parts to the line of intersection point with the angle between the both sides.
The symmetric indent arc of the indent tooth right and wrong tooth of described ratchet; The non-arc tooth of the symmetric indent of indent tooth right and wrong of described ratchet; The indent tooth of described ratchet is the non-arc tooth of symmetric indent.
Ratchet of the present invention and ratchet-driven tool thereof, the ratchet with asymmetry indent arc tooth that is provided can strengthen structural strength and improve torque; The ratchet that is provided with the non-arc tooth of indent, speed of production is fast, because the non-arc tooth of indent can utilize edging platen press or mechanography to be shaped, and the non-arc tooth of indent can be symmetry or asymmetric, ratchet with the non-arc tooth of asymmetry indent can be when spine move, as when screwing or unscrewing a fixture, bear higher torque.Be equiped with the ratchet-driven tool of ratchet of the present invention, as double offset ring spanner, in its casket end, can install ratchet, also can install the ratchet that ratchet with the non-arc tooth of symmetry indent or installing have the non-arc tooth of asymmetry indent with asymmetry indent arc toothing.
Further specify technology of the present invention below in conjunction with embodiment and accompanying drawing.
Fig. 1 is the perspective view that the present invention has the ratchet of asymmetry indent arc tooth
Fig. 2 is a ratchet side-looking structural representation embodiment illustrated in fig. 1
Fig. 3 is a ratchet plan structure schematic diagram embodiment illustrated in fig. 1, and its asymmetry indent arc shaping of teeth is shown
Fig. 4 is the plan structure schematic diagram that is equiped with the double offset ring spanner casket end of ratchet shown in Figure 1
Fig. 5 is along the sectional structure schematic diagram of 5-5 line among Fig. 4
Fig. 6 is the structure for amplifying schematic top plan view of ratchet shown in Figure 1, and among the figure and the position that traditional symmetry indent arc tooth is shown is to make comparisons
The a of Fig. 7, b, c illustrate respectively the ratchet that cooperates with the asymmetry indent arc tooth of ratchet shown in Figure 1 solid, overlook and the side-looking structural representation
The a of Fig. 8, b, c illustrate respectively the ratchet that cooperates with the symmetry indent arc tooth of ratchet shown in Figure 14 (prior art) solid, overlook and the side-looking structural representation
Fig. 9 is that the asymmetry indent arc tooth of ratchet shown in Figure 1 cooperates schematic diagram with the action of ratchet
Figure 10 is the load schematic diagram of the asymmetry indent arc tooth of ratchet shown in Figure 1
Figure 11 is the perspective view of prior art tradition ratchet
Figure 12 is the plan structure schematic diagram of ratchet shown in Figure 11
Figure 13 is the side-looking structural representation of ratchet shown in Figure 11
Figure 14 is the perspective view of another traditional ratchet of prior art
Figure 15 is the plan structure schematic diagram of ratchet shown in Figure 14
Figure 16 is the side-looking structural representation of ratchet shown in Figure 14
Figure 17 is the plan structure schematic diagram that is equiped with the double offset ring spanner casket end of ratchet shown in Figure 14
Figure 18 is that the symmetry indent arc tooth of double offset ring spanner handle ratchet wheel among Figure 17 cooperates schematic diagram with the action of ratchet
Figure 19 is the load diagram of the symmetry indent arc tooth of ratchet shown in Figure 14
Figure 20 is along the cross-sectional view of 20-20 line among Figure 17
Figure 21 is the ratchet perspective view with the non-arc tooth of indent of the present invention
Figure 22 is the side-looking structural representation of ratchet among Figure 21
Figure 23 is the plan structure schematic diagram that is equiped with the double offset ring spanner casket end of ratchet shown in Figure 21
Figure 24 is along the sectional structure schematic diagram of 24-24 line among Figure 23
Figure 25 is the structure for amplifying vertical view of ratchet shown in Figure 21, and among the figure and the position that traditional symmetry indent arc tooth is shown is to make comparisons]
The a of Figure 26, b, c illustrate respectively the ratchet that cooperates with the non-arc tooth of the indent of ratchet shown in Figure 21 solid, overlook and the side-looking structural representation
Referring to Fig. 1 to Fig. 9, and earlier referring to Fig. 1 to Fig. 3, ratchet 20 of the present invention has the interior circumferential surface 24 and the surface, an outside that are used for rotational fixture, and the surface, outside is provided with a plurality of indent arc teeth 22, as shown in Figure 3.Each indent arc tooth 22 utilizes in the degree of depth of the direction feed 26 formed indent arc teeth 22 of OR radially and is d1, intersect at a R place on the both sides of indent arc tooth 22, the OR line is divided into two unequal parts with the folded angle θ in indent arc tooth 22 both sides, as respectively being 30 °, 60 ° or respectively being 40 °, 50 ° etc.So each tooth 22 that forms be asymmetry the both sides of each tooth 22 are unequal in other words, the most important technical characterictic of the present invention that Here it is.As shown in Figure 3, the depth d 1 that each indent arc tooth 22 processes can not influence the structural strength of ratchet 20 itself, because the residual wall thickness t1 of ratchet is also very thick, therefore, ratchet 20 can bear higher torque when rotational fixture.
Referring to Fig. 4, ratchet 20 of the present invention can be installed in the casket end 38 of a double offset ring spanner 40 with rotating manner, the casket end 38 of spanner 40 and the abdomen part 39 between the handle 42 are provided with room 36, and to hold a ratchet 30, the structure of this ratchet 30 is as shown in Fig. 7 (comprising a, b, c).Ratchet 30 has a plurality of teeth 31 that cooperate with asymmetry indent arc tooth 22, and ratchet 30 1 ends 33 are attached to elastic component 32 1 ends, and elastic component 32 other ends then are contained in the cavity 34 of a wall 36a of room 36, as shown in Figure 4.
Referring to Figure 17, traditional ratchet 5 also is installed in the casket end 9a of a ratchet-type double offset ring spanner 9 with rotating manner, and the abdomen part 39 of spanner 9 is provided with room 10, and to hold a ratchet 11, the structure of this ratchet 11 is as shown in Fig. 8 (comprising a, b, c).Ratchet 11 has a plurality of tooth 11a that cooperate with symmetry indent arc tooth 6, ratchet 11 1 ends are attached to elastic component 12 1 ends, elastic component 12 other ends then are contained in the cavity 10a of a wall 10b of room 10, and Fig. 8 (comprising a, b, c) and Figure 17 are used to provide comparison.
Make comparisons by Fig. 6 and with Fig. 5 and Figure 20, can find out the wall thickness of ratchet 20 of the present invention and the difference between traditional ratchet 5 wall thickness.
When use is provided with the double offset ring spanner of ratchet 20 of the present invention, as shown in Figure 9, angle δ between the acting surface P normal N of tooth and ratchet 30 and the room 36 wall 36a intersection I is less than this angle of traditional ratchet, as shown in Figure 18, so, ratchet 30 among Fig. 9 is pushed to the wall 36a of room 36 reliably, thereby ratchet 20 teeth 22 provide reliable with 31 in ratchet 30 teeth and combine.If angle δ is tending towards 90 °, then ratchet causes undesirable skidding towards the ratchet central mobile, gives ratchet because of there not being horizontal component, allows it move towards room 36 wall 36a.And combining of providing of ratchet 20 of the present invention and 30 on ratchet more reliably is difficult for skidding than combining between traditional ratchet 5 and the ratchet 11.Spanner with ratchet of the present invention, ratchet combination can be used for quite little space environment, promptly run into and stop and can't be rotated further the time when spanner spine move fixture, can needn't allow spanner break away from fixture with the spanner backward rotation again by former direction spine move, offer convenience and save time to operation.
Referring to Fig. 9, Figure 10, when ratchet 20 teeth 22 acting surface P of the present invention are subjected to time spent of doing of power F, it is 2/1.732h that ratchet 30 provides the area that bears this power F
2And among Figure 19, for ratchet 5, do the time spent when ratchet 5 teeth 6 arbitrary acting surface P are subjected to power F, it is h that ratchet 11 provides the area that bears this power F
2, the bearing plane to this power F that provides than ratchet of the present invention, ratchet combining structure is little, and the ratchet 20 that promptly has an asymmetry indent arc tooth 22 can provide higher torque for spine move, as screws or unscrew the fixture of nut or bolt one class.
Referring to Figure 21, Figure 22, second embodiment of ratchet of the present invention is shown, ratchet 50 has the interior circumferential surface 54 and the surface, an outside that are used for rotational fixture, the surface, outside is provided with the non-arc tooth 52 of a plurality of indents, be to utilize edging platen press or lost wax casting or molded formation, than faster with Tool in Cutting.That the non-arc tooth 52 of each indent can be is trapezoidal, triangle or utilize the different shape of forming without stock removal.Ratchet 50 with the non-arc tooth 52 of indent of the present invention, its production cost can reduce significantly, because the curring time of the non-arc tooth 52 of indent is short.Non-arc tooth can be symmetry or asymmetric, has the ratchet 50 of the non-arc tooth 52 of symmetrical indent, and its driving torque is similar with the ratchet 5 with symmetry indent arc tooth 6.And having the ratchet 50 of the non-arc tooth 52 of asymmetry indent, its driving torque is then than ratchet 5 height with symmetry indent arc tooth 6.
Referring to Figure 23, ratchet 50 of the present invention can be installed in the casket end 38 of a double offset ring spanner 40 with rotating manner, and the abdomen part 39 of spanner 40 is established a room 36, to hold ratchet 60.The structure of ratchet 60 is shown among Figure 26 a to Figure 26 c.Ratchet 60 has a plurality of teeth 61 that cooperate with the non-arc tooth 52 of indent, and ratchet 60 1 ends 62 are attached to elastic component 32 1 ends, and elastic component 32 other ends then are contained in the cavity 34 of a wall 36a of room 36, as shown in Figure 23.The example structure of the first kind of ratchet 30 of the present invention shown in the comparison diagram 7a to 7c, the ratchet 11 that tradition among Fig. 8 a to 8c is used, and the example structure of the second kind of ratchet 60 of the present invention shown in Figure 26 a to 26c, the structure shown in Figure 25,24,20 can be compared in addition, and the wall thickness of ratchet 50 of the present invention and the difference between traditional ratchet 5 wall thickness can be found out.
In sum, ratchet with asymmetry indent arc tooth of the present invention can strengthen its structural strength and improve moment of torsion, because the ratchet wall is thicker, and combining between the ratchet with asymmetry indent arc tooth and the ratchet with asymmetry arc tooth is more reliable; The easier shaping of ratchet with the non-arc tooth of indent of the present invention, thereby can reduce production costs, when the non-arc tooth of indent was symmetry, ratchet had higher moment of torsion.The spanner that is provided with the combining structure of ratchet of the present invention and ratchet can be used for suitable narrow space.The combining structure of ratchet of the present invention and ratchet is not limited in the double offset ring spanner, also can be used in other ratchet-driven tool, in ratchet spanner.
Claims (20)
1. ratchet, circumferential surface and surface, outside in including, the surface, outside is provided with more than one indent tooth, it is characterized in that: described each indent tooth has the intersection point on both sides and both sides, and the ratchet center is divided into equal or unequal two parts to the line of intersection point with the angle between the both sides.
2. a kind of ratchet according to claim 1 is characterized in that: the symmetric indent arc of described indent tooth right and wrong tooth, described ratchet center is divided into unequal two parts to the line of intersection point with the angle between the both sides.
3. a kind of ratchet according to claim 1 is characterized in that: the non-arc tooth of the symmetric indent of described indent tooth right and wrong, described ratchet center is divided into unequal two parts to the line of intersection point with the angle between the both sides.
4. a kind of ratchet according to claim 3 is characterized in that: the non-arc tooth of the indent of described asymmetry is forming without stock removal.
5. a kind of ratchet according to claim 3 is characterized in that: the non-arc tooth of the indent of described asymmetry utilizes edging to be pressed into shape.
6. a kind of ratchet according to claim 3 is characterized in that: the non-arc tooth of the indent of described asymmetry utilizes lost wax casting to be shaped.
.7. a kind of ratchet according to claim 3 is characterized in that: the non-arc tooth of the indent of described asymmetry is trapezoidal.
8. a kind of ratchet according to claim 1 is characterized in that: described indent tooth is the non-arc tooth of symmetric indent, and described ratchet center is divided into two equal parts to the line of intersection point with the angle between the both sides.
9. a kind of ratchet according to claim 8 is characterized in that: the non-arc tooth of described symmetric indent is forming without stock removal.
10. a kind of ratchet according to claim 8 is characterized in that: the non-arc tooth of described symmetric indent utilizes edging to be pressed into shape.
11. a kind of ratchet according to claim 8 is characterized in that: the non-arc tooth of described symmetric indent utilizes lost wax casting to be shaped.
12. a kind of ratchet according to claim 8 is characterized in that: the non-arc tooth of described symmetric indent is trapezoidal.
13. a ratchet-driven tool comprises handle and the end that is connected with handle, ratchet and pawl, described end is provided with a hole, is provided with a room between handle and the end; Described ratchet is installed in the hole on the end in rotating mode, circumferential surface and surface, outside in described ratchet includes, and the surface, outside is provided with more than one indent tooth; Described ratchet slidably is installed in the room and with ratchet and combines, ratchet is provided with the tooth that cooperates with the indent tooth of ratchet more than, described ratchet biasing is towards the wall of room, it is characterized in that: each indent tooth of described ratchet has the intersection point on both sides and both sides, and the ratchet center is divided into equal or unequal two parts to the line of intersection point with the angle between the both sides.
14. a kind of ratchet-driven tool according to claim 13 is characterized in that: the symmetric indent arc of the indent tooth right and wrong tooth of described ratchet, described ratchet center is divided into unequal two parts to the line of intersection point with the angle between the both sides.
15. a kind of ratchet-driven tool according to claim 13 is characterized in that: the non-arc tooth of the symmetric indent of described indent tooth right and wrong, described ratchet center is divided into unequal two parts to the line of intersection point with the angle between the both sides.
16. a kind of ratchet-driven tool according to claim 15 is characterized in that: the non-arc tooth of the indent of described asymmetry is forming without stock removal.
17. a kind of ratchet-driven tool according to claim 15 is characterized in that: the non-arc tooth of the indent of described asymmetry utilizes edging to be pressed into shape.
18. a kind of ratchet-driven tool according to claim 13 is characterized in that: described indent tooth is the non-arc tooth of symmetric indent, and described ratchet center is divided into two equal parts to the line of intersection point with the angle between the both sides.
19. a kind of ratchet-driven tool according to claim 18 is characterized in that: the non-arc tooth of described symmetric indent utilizes edging to be pressed into shape.
20. a kind of ratchet-driven tool according to claim 18 is characterized in that: the non-arc tooth of described symmetric indent is forming without stock removal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001034650A CN1147381C (en) | 2000-03-13 | 2000-03-13 | Ratchet and its ratchet drive tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001034650A CN1147381C (en) | 2000-03-13 | 2000-03-13 | Ratchet and its ratchet drive tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1262981A true CN1262981A (en) | 2000-08-16 |
| CN1147381C CN1147381C (en) | 2004-04-28 |
Family
ID=4577003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001034650A Expired - Fee Related CN1147381C (en) | 2000-03-13 | 2000-03-13 | Ratchet and its ratchet drive tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1147381C (en) |
-
2000
- 2000-03-13 CN CNB001034650A patent/CN1147381C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1147381C (en) | 2004-04-28 |
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