CN101135366A - Ratchet and free wrench with the same - Google Patents
Ratchet and free wrench with the same Download PDFInfo
- Publication number
- CN101135366A CN101135366A CNA2006101117554A CN200610111755A CN101135366A CN 101135366 A CN101135366 A CN 101135366A CN A2006101117554 A CNA2006101117554 A CN A2006101117554A CN 200610111755 A CN200610111755 A CN 200610111755A CN 101135366 A CN101135366 A CN 101135366A
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- ratchet
- plane
- tooth
- increment
- tooth root
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Abstract
This invention is a ratchet and ratchet handle with this ratchet. The peripheral of the ratchet is arranged with several ratchets evenly. The said ratchet has a tooth stem and a tooth end. A tooth back is connected between the said tooth stem and tooth end. The tooth back has the connected first and second inclined planes. The first inclined plane is close to the said tooth stem, while the second inclined plane is close to the said tooth end. The slope of first inclined plane is bigger than that of the second inclined plane. The ratchet is arranged in the round housing chamber at the head of the ratchet handle. The tooth back of each ratchet and the said housing chamber peripheral form a gap with smaller breadth. Several catch elements are arranged in the said gap. Thus, the ratchet can rotate towards one direction in the housing chamber. When the catch element presses out dent on the tooth back of ratchet, the dent forming speed can be reduced through second inclined plane.
Description
Technical field
The present invention is relevant with hand tools, detailed it, refer to a kind of ratchet of ratchet wrench and have the ratchet wrench of this kind ratchet.
Background technique
Ratchet wrench is installed a ratchet in the head of spanner, and ratchet has the effect of one-way rotation in head, makes ratchet wrench produce the unidirectional effect of pulling.
In prior art, it is the mode and the non-mode that produces interlock with tooth of interlock that the start kenel between the head of ratchet and spanner can be divided into the tooth.Known a kind of non-be that the ratchet wrench of the mode of interlock can have as shown in Figure 1 with the tooth: a ratchet 15 is installed in the circular room 14 of head 12 of a spanner 10, and rotatable.Some ratchets 16 are located at this ratchet 15 side faces.Each ratchet has a tooth root 161, an increment 162 and a back of tooth 163, and this back of tooth 163 is an inclined-plane, makes that the gap between the back of tooth and room 14 side faces is reduced toward increment 162 by tooth root 161.Plurality of rollers 18 is located at respectively between these ratchets 16 and this room 14.
Be as the criterion with graphic direction, when ratchet 15 clockwise direction in this room 14 rotated, roller 18 moved toward tooth root 161 directions of ratchets 16, makes ratchet 15 to rotate freely in room 14.Otherwise when ratchet 15 rotates with counter clockwise direction (or clockwise direction is pulled spanner), roller 18 moves toward the direction of increments 162.Because of the gap of 14 of increment 162 and rooms decrescence, make ratchet be subjected to roller 18 and block, and can't rotate, therefore, when pulling spanner, can drive ratchet synchronously so that turn spiro connecting element, for example bolt, nut, or sleeve.
As can be known, when ratchet 15 rotated synchronously with head 12, roller 18 applied pressure on the ratchet 16.After spanner uses a period of time, the pressure of roller 18 will produce an indenture 19 in the back of tooth 163 of ratchet 16.Because the back of tooth 163 is the inclined-plane of single slope, along with growth service time of spanner, roller 18 applies pressure to this indenture 19 that ratchet caused will be mobile forward gradually, make ratchet impaired, even influence the working life of ratchet.
Moreover when indenture 19 continues when mobile forward, the length of indenture is longer, distance between the terminal a of tooth root 161 and indenture promptly continues to increase, after then the user must pull bigger angle with spanner, the beginning can make roller 18 by the terminal a of tooth root 161 place's migration indentures, so that block ratchet.So, indenture is longer, and then the sensitivity of spanner promptly day by day reduces.
Summary of the invention
Purport of the present invention is taken off disappearance on solving, its main purpose is to provide a kind of ratchet of ratchet wrench, and the ratchet cording of this ratchet has long working life.
Another object of the present invention is to provide a kind of ratchet wrench, can make this ratchet wrench after using a period of time, still possess to a certain degree sensitivity with above-mentioned ratchet.
Particularly, a kind of ratchet of the present invention, the side face of this ratchet uniformly-spaced is provided with some ratchets; One drive portion is located at this ratchet center; Respectively this ratchet has a tooth root and an increment; One back of tooth is connected between this tooth root and this increment, and is inclination; Wherein:
Respectively the back of tooth of this ratchet has one first inclined-plane and one second inclined-plane that is connected, and this first inclined-plane is close to this tooth root, and this second inclined-plane is close to this increment; The tangent direction of this first inclined-plane and this ratchet forms a θ 1 angle; The tangent direction system of this second inclined-plane and this ratchet forms a θ 2 angles; The angle of this θ 2 is greater than the angle of this θ 1.
Bright according to this law, a kind of ratchet wrench includes:
One lever; One head is located at this lever one end; One circular room is located in this head;
One ratchet, its side face uniformly-spaced is provided with some ratchets; One drive portion is located at this ratchet center; Respectively this ratchet has a tooth root, an increment and is connected in the back of tooth between this tooth root and this increment; This back of tooth has one first inclined-plane and one second inclined-plane that is connected, and this first inclined-plane is close to this tooth root, and this second inclined-plane is close to this increment; The slope on this first inclined-plane is greater than the slope on this second inclined-plane; This ratchet is installed in this room and can rotates in this room, respectively forms a gap between the back of tooth of this ratchet and this room side face, and the width in this gap is dwindled toward this increment by this tooth root;
Some holding pieces are installed in these gaps, and when these holding pieces moved toward the narrow end in these gaps, these ratchets, these holding pieces and this room side face be clip mutually.
Thereby this spanner has slowed down the sign that indenture moves forward, and it is impaired that ratchet is difficult for, and improves the working life of ratchet, ratchet.
Moreover by the second bigger inclined-plane of this slope is set, the thickness of ratchet increases, and improves its structural strength and resistance to pressure, and makes ratchet be difficult for breaking.Prolong the life time of ratchet so, equally.
In addition, because indenture is difficult for moving forward when arriving second inclined-plane again, therefore, the distance of tooth root and indenture end remains in certain length, can not continue to increase, so again, the drive holding piece is maintained fixed by the angle of pulling spanner of tooth root migration indenture end, pull angle and can not continue to increase, make spanner in use for some time, still possess certain sensitivity.
The base this, ratchet provided by the present invention can effectively reduce the impaired situation of ratchet, and has improved the intensity of ratchet.And spanner is along with suitable sensitivity is still possessed in the increase of service time.
Is the effect that makes the auditor further understand purpose of the present invention, feature and to be reached, below lifts some preferred embodiments of the present invention now, and after cooperating graphic being described in more detail in, wherein, graphic is arranged to:
Description of drawings
Fig. 1: the top view part sectioned view that is known a kind of ratchet wrench.
Fig. 2: be the partial enlarged drawing of Fig. 1, and show the impaired situation of the ratchet of ratchet.
Fig. 3: the top view part sectioned view that is the ratchet wrench of a preferred embodiment of the present invention.
Fig. 4: the stereogram that is the ratchet of a preferred embodiment of the present invention.
Fig. 5: the partial enlarged drawing that is Fig. 3.
Fig. 6: be the ratchet of ratchet of the present invention state when producing indenture.
Fig. 7: the top view that is the ratchet of another preferred embodiment of the present invention.
Embodiment
At first see also Fig. 3, Fig. 4, the ratchet wrench 20 that a preferred embodiment of the present invention provided, it has the head 24 that a lever 22 and is positioned at this lever one end.One circular room 26 is located in this head, and for a ratchet 30 installings, this ratchet also can rotate in this room 26.
The side face of this ratchet 30 uniformly-spaced is provided with some ratchets 32, and its center has a drive portion 34.This drive portion 34 can be an inserting column, in order to coupling sleeve as shown in Figure 4.This inserting column can be with ratchet 30 one-body molded; Also or be other part, and be plugged in the jack 35 of ratchet, as Fig. 3.The drive portion 34 ' of ratchet also can be polygonal trepanning as shown in Figure 7, and for example quadrangle, hexagon, octagon or dodecagon are in order to socket spiro connecting element or sleeve.
Please cooperate and consult Fig. 5, each ratchet 32 has a tooth root 40 and an increment 42.One back of tooth 45 is connected between tooth root 40 and the increment 42, and is inclination, make between the back of tooth 45 and room 26 side faces gap g by tooth root toward increment decrescence.
Some holding pieces 50, be ball or cylinder, be installed in respectively among these gaps g of these ratchets 32 and this room 26, when the increment 42 of holding piece 50 past ratchets moves, the head of spanner will make ratchet 32, holding piece and room side face produce the clip effect, so that can drive ratchet.
The invention is characterized in:
See also Fig. 5, the back of tooth 45 of each ratchet 32 has one first inclined-plane 451 and one second inclined-plane 452 that is connected, and this first inclined-plane 451 is close to tooth root 40 second inclined-planes 452 and then is close to increment 42.The tangent direction T of this two inclined-plane 451,452 and ratchet 32 forms the angle of a θ 1 and θ 2 respectively, and wherein, the angle of θ 2 is greater than the angle of θ 1, and in other words, this second inclined-plane 452 tilts than first inclined-plane 451.
This spanner 20 when using, according to the direction of Fig. 3, when ratchet 30 with respect to head 24 and clockwise direction when rotating (spanner is anticlockwise pulling), holding piece 50 rolls toward the direction of tooth root 40, that is the wide end of past gap g moves, and ratchet is rotatable freely.Otherwise toward clockwise direction when pulling, holding piece 50 moves toward increments 42 with spanner, because of dwindling gradually of gap g, makes ratchet 32, holding piece 50 and the mutual clip of room 26 side faces, so when pulling spanner, can driving pawl 30 and the rotation spiro connecting element.
See also Fig. 6, this spanner in use for some time, holding piece 50 will extrude indenture 49 on the back of tooth 45 of ratchet 32, this indenture betides first inclined-plane 451.Along with the increase of service time, in case living increment 42 directions gradually, moves indenture 49, when arriving the locating of second inclined-plane 452, because of the slope on this inclined-plane 452 bigger, and then slowing down the sign that indenture 49 moves forward, it is impaired that ratchet 32 is difficult for, and improves the working life of ratchet, ratchet.
Moreover by the second bigger inclined-plane 452 of this slope is set, the thickness of ratchet 32 increases, and improves its structural strength and resistance to pressure, and makes ratchet be difficult for breaking.Prolong the life time of ratchet so, equally.
In addition, because indenture 49 is difficult for moving forward when arriving second inclined-plane 452 again, therefore, tooth root 40 remains in certain length with the distance of the terminal b of indenture, can not continue to increase, so again, drive holding piece 50 is maintained fixed by the angle of pulling spanner of the terminal b of tooth root migration indenture, pull angle and can not continue to increase, make spanner in use for some time, still possess certain sensitivity.
Base this, ratchet provided by the present invention can effectively reduce the impaired situation of ratchet, and improves the intensity of ratchet.And spanner is along with suitable sensitivity is still possessed in the increase of service time.
The above only is a concrete enforcement structure of the present invention, when not limiting scope of the present invention with this.Any simple modification or equivalence of doing according to technology contents of the present invention changes, and all still belongs to the scope that the present invention is contained.
Claims (10)
1. ratchet, the side face of this ratchet uniformly-spaced is provided with some ratchets; One drive portion is located at this ratchet center; Respectively this ratchet has a tooth root and an increment; One back of tooth is connected between this tooth root and this increment, and is inclination; Wherein:
Respectively the back of tooth of this ratchet has one first inclined-plane and one second inclined-plane that is connected, and this first inclined-plane is close to this tooth root, and this second inclined-plane is close to this increment; The tangent direction of this first inclined-plane and this ratchet forms a θ 1 angle; The tangent direction system of this second inclined-plane and this ratchet forms a θ 2 angles; The angle of this θ 2 is greater than the angle of this θ 1.
2. ratchet as claimed in claim 1 is characterized in that: this drive portion is a polygonal trepanning.
3. ratchet as claimed in claim 1 is characterized in that: this drive portion is an inserting column.
4. ratchet as claimed in claim 1 is characterized in that: a jack is established at this ratchet center; This drive portion is an inserting column, is inserted in this jack.
5. ratchet wrench includes:
One lever; One head is located at this lever one end; One circular room is located in this head;
One ratchet, its side face uniformly-spaced is provided with some ratchets; One drive portion is located at this ratchet center; Respectively this ratchet has a tooth root, an increment and is connected in the back of tooth between this tooth root and this increment; This back of tooth has one first inclined-plane and one second inclined-plane that is connected, and this first inclined-plane is close to this tooth root, and this second inclined-plane is close to this increment; The slope on this first inclined-plane is greater than the slope on this second inclined-plane; This ratchet is installed in this room and can rotates in this room, respectively forms a gap between the back of tooth of this ratchet and this room side face, and the width in this gap is dwindled toward this increment by this tooth root;
Some holding pieces are installed in these gaps, and when these holding pieces moved toward the narrow end in these gaps, these ratchets, these holding pieces and this room side face be clip mutually.
6. ratchet wrench as claimed in claim 5 is characterized in that: the tangent direction of this first inclined-plane and this ratchet forms a θ 1 angle; The tangent direction of this second inclined-plane and this ratchet forms a θ 2 angles; The angle of this θ 2 is greater than the angle of this θ 1.
7. ratchet wrench as claimed in claim 5 is characterized in that: this drive portion is a polygonal trepanning.
8. ratchet wrench as claimed in claim 5 is characterized in that: this drive portion is an inserting column.
9. ratchet wrench as claimed in claim 5 is characterized in that: a jack is established at this ratchet center; This drive portion is an inserting column, is inserted in this jack.
10. ratchet wrench as claimed in claim 5 is characterized in that: respectively this holding piece is a rounded rotatable object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101117554A CN100510478C (en) | 2006-08-28 | 2006-08-28 | Ratchet and free wrench with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101117554A CN100510478C (en) | 2006-08-28 | 2006-08-28 | Ratchet and free wrench with the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101135366A true CN101135366A (en) | 2008-03-05 |
| CN100510478C CN100510478C (en) | 2009-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101117554A Active CN100510478C (en) | 2006-08-28 | 2006-08-28 | Ratchet and free wrench with the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100510478C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016176817A1 (en) * | 2015-05-05 | 2016-11-10 | 杭州巨星工具有限公司 | Wrench |
-
2006
- 2006-08-28 CN CNB2006101117554A patent/CN100510478C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016176817A1 (en) * | 2015-05-05 | 2016-11-10 | 杭州巨星工具有限公司 | Wrench |
| US10589404B2 (en) | 2015-05-05 | 2020-03-17 | Hangzhou Great Star Tools Co., Ltd. | Wrench |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100510478C (en) | 2009-07-08 |
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