CN203592429U - Labor-saving wrench - Google Patents
Labor-saving wrench Download PDFInfo
- Publication number
- CN203592429U CN203592429U CN201320590575.4U CN201320590575U CN203592429U CN 203592429 U CN203592429 U CN 203592429U CN 201320590575 U CN201320590575 U CN 201320590575U CN 203592429 U CN203592429 U CN 203592429U
- Authority
- CN
- China
- Prior art keywords
- outer ring
- interior axle
- centre circle
- cover plate
- labour
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a labor-saving wrench which is use-space saving and laborsaving, and is simple in operation. The labor-saving wrench includes an outer ring, a fixed handle, a movable handle, a left cover plate, a right cover plate, a transmission square tenon, and a sleeve. A curve I<2> is arranged at the inner edge of the outer ring, n<b> waves b<2> are uniformly arranged on the curve I<2>, the movable handle is mounted on the outer radial side of the outer ring, and the fixed handle is fixed onto the left cover plate. In addition, the labor-saving wrench further includes a middle ring, an inner shaft, transmission components and a ratchet mechanism. The outer ring, the middle ring and the inner shaft share an axis O-O, a curve I<1> is arranged at the outer edge of the inner shaft, n<a> waves b<1> are uniformly arranged on the curve I<1>, the outer ring is arranged on the outer side of the inner shaft, the middle ring is arranged between the inner shaft and the outer ring, the left end surface and the right end surface of the middle ring are respectively connected with the left cover plate and the right cover plate, n<c> radial grooves are uniformly formed in the middle ring, the transmission components are arranged in the radial grooves and can slide in the radial grooves, ratchet tooth sockets are machined on the outer radial surface of the outer ring, and a pawl corresponding to the tooth sockets is mounted in the middle of the movable handle.
Description
Technical field
The utility model relates to a kind of hardware & tools, and particularly relating to one can labour-saving spanner.
Background technology
Spanner is very common in daily life, and kind is a lot.The existing spanner of using ratchet mechanism is also very many, is mainly to utilize handle to connect ratchet, directly utilizes ratchet mechanism to control the rotation of workpiece.The workpiece that the workpiece that will rotate with handle or nut and ratchet are provided with joins or is socketed, and rotary handle makes the tooth of internal tooth and ratchet intermeshing, reverse rotation handle, and internal tooth separates with the tooth of ratchet.Such spanner, owing to there is no the variation of gearratio, can relatively be required great effort so use.In the time of needs larger torque, have to increase the length of handle, usage space also increases greatly, has also increased the difficulty of operation simultaneously.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of usage space, spanner laborsaving, easy and simple to handle saved.
The utility model labour-saving spanner, comprises outer ring, fixed handle, flexible handle, left cover, right cover plate, transmission side's tenon, sleeve and ratchet mechanism, and described ratchet mechanism comprises teeth groove and ratchet.The inner edge of described outer ring is to be evenly provided with n
bindividual ripple b
2curve l
2, described curve l
2base radius be r
b, described flexible handle is arranged on outside radially, outer ring, and fixed handle is fixed on left cover.Also comprise centre circle, interior axle and driving member.Described outer ring, centre circle and interior axle coaxial line O-O, be evenly provided with n in the outer rim of described interior axle
aindividual ripple b
1curve l
1, described curve l
1base radius be r
a.Described interior axle at least one end is fixedly installed transmission side's tenon, and described transmission side tenon is upwards fixedly connected with in week with sleeve.Described outer ring is arranged on interior axle outside, and described centre circle is arranged between interior axle and outer ring, and its left and right both ends of the surface are connected with right cover plate with left cover respectively.On described centre circle, be evenly provided with n
cindividual radial slot, described driving member is arranged in radial slot and can in radial slot, slides, and driving member is r along centre circle length radially
b-r
a, the width of driving member is identical with the width of radial slot, described ripple b
1with ripple b
2wave height a identical.Described n
cfor n
awith n
band or poor absolute value, described outer ring radially-outer surface is processed with ratchet teeth groove, flexible handle middle part is provided with the ratchet corresponding with teeth groove.
The utility model labour-saving spanner, wherein said driving member is large roller, the diameter of described large roller is r
b-r
a.
The utility model labour-saving spanner, wherein said driving member comprises push rod and two little rollers, described two little rollers are separately positioned on the two ends of push rod, and the relative push rod of little roller is rotatable.
The utility model labour-saving spanner, wherein said centre circle is provided with some fixed vias, described left cover is processed with the through hole corresponding with fixed via with on right cover plate, described fixed via with connecting bolt is housed in through hole centre circle, left cover and right cover plate is fixedly connected with.
The utility model labour-saving spanner, wherein said fixed handle and left cover are bolted.
The utility model labour-saving spanner, is processed with a groove take O-O as axis on wherein said at least one end face of interior axle, and matching used transmission side tenon is installed on described groove.
The utility model labour-saving spanner difference from prior art is that the utility model labour-saving spanner is provided with the transmission device that can change gearratio between outer ring, centre circle and interior axle, fixing centre circle, while rotating flexible handle, when the change of gearratio makes to be used in outer ring with identical masterpiece, inner ring can obtain larger moment, thereby reaches labour-saving effect.On outer ring and flexible handle, be provided with single direction ratchet mechanism, when spanner moves back and forth, only can make bolt screw to a direction, use safer convenience, also saved the needed space of big angle rotary flexible handle in labour-saving simultaneously simultaneously.
Below in conjunction with accompanying drawing, the utility model labour-saving spanner is described further.
Accompanying drawing explanation
Fig. 1 is the front view of the utility model labour-saving spanner;
Fig. 2 is the utility model labour-saving spanner A-A direction cutaway view.
The specific embodiment
As depicted in figs. 1 and 2, the utility model labour-saving spanner embodiment mono-comprises fixed handle 11, flexible handle 12, left cover 91, right cover plate 92, driving member, ratchet mechanism, outer ring 1, centre circle 2 and interior axle 3.Outer ring 1, centre circle 2 and interior axle 3 coaxial line O-O, the inner edge of outer ring 1 is to be evenly provided with n
bindividual ripple b
2curve l
2, curve l
2base radius be r
b.Curve l
2polar equation take axle center O as initial point as:
(t is angle variable), the outer rim of interior axle 3 is to be evenly provided with n
aindividual ripple b
1curve l
1, curve l
1base radius be r
a.Curve l
1polar equation take axle center O as initial point as:
(t is angle variable), respectively there is the identical and groove take O-O as axis of diameter at the axial two ends of interior axle 3, and for matching used transmission side tenon 13 is installed, transmission side's tenon 13 is upwards fixedly connected with in week with sleeve 14.Outer ring 1 is arranged on interior axle 3 outsides, centre circle 2 is arranged between interior axle 3 and outer ring 1, the left and right both ends of the surface of centre circle 2 are connected with right cover plate 92 with left cover 91 respectively, centre circle 2 is provided with some fixed vias 8, on left cover 91 and right cover plate 92, be processed with the through hole corresponding with fixed via 8 10, fixed via 8 with connecting bolt is housed in through hole 10 centre circle 2, left cover 91 and right cover plate 92 is fixedly connected with.On centre circle 2, be evenly provided with n
cindividual radial slot 4, driving member is arranged in radial slot 4 and can be in the interior slip of radial slot 4, and the selected driving member of the present embodiment is large roller 5, and its diameter is r
b-r
a.Ripple b
1with ripple b
2wave height a identical, n
cfor n
awith n
band or poor absolute value.Outer ring 1 radially-outer surface is processed with ratchet teeth groove 7, and flexible handle 12 middle parts are provided with the ratchet corresponding with teeth groove 76, and flexible handle 12 is arranged on outside radially, outer ring 1, and fixed handle 11 is arranged on left cover 91 by bolt.
The difference of the coaxial speed variator of the second embodiment and the first embodiment is that driving member comprises push rod and two little rollers, two little rollers are separately positioned on the two ends of push rod, and the relative push rod of little roller is rotatable, two little rollers can contact with interior axle 3 outer rims and outer ring 1 inner edge respectively, and whole driving member is r in centre circle 2 footpaths length upwards
b-r
a.
The course of work of the utility model labour-saving spanner is as follows: centre circle 2 and fixed handle 11 are motionless, sleeve 14 is enclosed within and is treated on tight bolt, sleeve 14 is installed on transmission side's tenon 13, transmission side's tenon 13 is arranged on interior axle 3, rotate flexible handle 12, outer ring 1 rotates under the drive of ratchet mechanism, and outer ring 1 rotates because the extruding of driving member drives interior axle 3 simultaneously, completes the locking of bolt; Reverse rotation flexible handle 12, due to the unidirectional cutoff effect of ratchet mechanism, outer ring 1 will can not be moved, then rotate flexible handle 12 to inceptive direction, continue clamping screw, until reach predetermined preload.While unloading bolt, only labour-saving spanner need be overturn, transmission side's tenon 13 is installed in the groove of interior axle 3 of opposite side and repeat above-mentioned steps.Wherein work as n
cfor n
awith n
band time, interior axle 3 with axes O-O along circumferentially rotating, ripple b
1promote driving member and radially outwards slide in radial slot 4, driving member promotes ripple b
2outer ring 1 is also rotated along circumferential with axes O-O, in the time that centre circle 2 maintains static, the switched in opposite of outer ring 1 and interior axle 3; Work as n
cfor n
awith n
bthe absolute value of difference time, interior axle 3 is identical with turning to of outer ring 1.
Above-described embodiment is described preferred embodiment of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection domain of the utility model claims.
Claims (6)
1. a labour-saving spanner, comprise outer ring (1), fixed handle (11), flexible handle (12), left cover (91), right cover plate (92), transmission side's tenon (13), sleeve (14) and ratchet mechanism, described ratchet mechanism comprises teeth groove (7) and ratchet (6), and the inner edge of described outer ring (1) is to be evenly provided with n
bindividual ripple b
2curve l
2, described curve l
2base radius be r
bdescribed flexible handle (12) is arranged on outside radially, outer ring (1), fixed handle (11) is fixed on left cover (91), it is characterized in that: also comprise centre circle (2), interior axle (3) and driving member, described outer ring (1), centre circle (2) and interior axle (3) coaxial line O-O, be evenly provided with n in the outer rim of described interior axle (3)
aindividual ripple b
1curve l
1, described curve l
1base radius be r
adescribed interior axle (3) at least one end is fixedly installed transmission side's tenon (13), described transmission side tenon (13) is upwards fixedly connected with in week with sleeve (14), described outer ring (1) is arranged on interior axle (3) outside, described centre circle (2) is arranged between interior axle (3) and outer ring (1), its left and right both ends of the surface are connected with right cover plate (92) with left cover (91) respectively, and described centre circle is evenly provided with n on (2)
cindividual radial slot (4), described driving member is arranged in radial slot (4) and can in radial slot (4), slides, and driving member is r along centre circle (2) length radially
b-r
a, the width of driving member is identical with the width of radial slot (4), described ripple b
1with ripple b
2wave height a identical, described n
cfor n
awith n
band or poor absolute value, described outer ring (1) radially-outer surface is processed with ratchet teeth groove (7), flexible handle (12) middle part is provided with the ratchet (6) corresponding with teeth groove (7).
2. labour-saving spanner according to claim 1, is characterized in that: described driving member is large roller (5), and the diameter of described large roller (5) is r
b-r
a.
3. labour-saving spanner according to claim 1, is characterized in that: described driving member comprises push rod and two little rollers, and described two little rollers are separately positioned on the two ends of push rod, and the relative push rod of little roller is rotatable.
4. labour-saving spanner according to claim 1, it is characterized in that: described centre circle (2) is provided with some fixed vias (8), on described left cover (91) and right cover plate (92), be processed with the through hole (10) corresponding with fixed via (8), described fixed via (8) with connecting bolt is housed in through hole (10) centre circle (2), left cover (91) and right cover plate (92) is fixedly connected with.
5. labour-saving spanner according to claim 1, is characterized in that: described fixed handle (11) is bolted with left cover (91).
6. labour-saving spanner according to claim 1, is characterized in that: at least one end face of described interior axle (3), be processed with a groove take O-O as axis, matching used transmission side tenon (13) is installed on described groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590575.4U CN203592429U (en) | 2013-09-22 | 2013-09-22 | Labor-saving wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590575.4U CN203592429U (en) | 2013-09-22 | 2013-09-22 | Labor-saving wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203592429U true CN203592429U (en) | 2014-05-14 |
Family
ID=50673368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320590575.4U Expired - Fee Related CN203592429U (en) | 2013-09-22 | 2013-09-22 | Labor-saving wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203592429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447996A (en) * | 2013-09-22 | 2013-12-18 | 广西五鸿建设集团有限公司 | Labor-saving wrench |
-
2013
- 2013-09-22 CN CN201320590575.4U patent/CN203592429U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447996A (en) * | 2013-09-22 | 2013-12-18 | 广西五鸿建设集团有限公司 | Labor-saving wrench |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20160922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |