CN204546381U - A kind of monkey wrench - Google Patents
A kind of monkey wrench Download PDFInfo
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- CN204546381U CN204546381U CN201520260825.7U CN201520260825U CN204546381U CN 204546381 U CN204546381 U CN 204546381U CN 201520260825 U CN201520260825 U CN 201520260825U CN 204546381 U CN204546381 U CN 204546381U
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- worm gear
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- monkey wrench
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Abstract
The utility model discloses a kind of monkey wrench, comprises wrench body and worm gear, and wherein, wrench body comprises one handle and an operate portions; Operate portions comprises a fixed part, a movable part and a chute, and the lower end of movable part is located in chute, and the root edge of the lower end of movable part is provided with teeth portion; Operate portions also comprises a through hole, and worm gear is located in through hole, and engages with teeth portion; When rotating worm gear, worm gear and teeth portion effect, and then drive movable part to move towards or away from fixed part; Worm gear is 2, has a difference at least, can drive another worm gear wheel during arbitrary worm gear wheel in the wheel space width of two worm gears, wheel tooth height, gear teeth width, tooth profiles, gear teeth tilt angles, gear teeth flank of tooth lines.Compared with prior art, the worm gear of monkey wrench of the present utility model is at least two, and when the helical of plural worm gear can make actual use, the forced contact point of worm gear helical and tooth bar has two at least, makes worm gear be not easy to skid.
Description
Technical field
The utility model relates to a kind of spanner, particularly a kind of monkey wrench.
Background technology
Monkey wrench a kind ofly can screw or unscrew the instrument having angle screw or nut.Chinese utility model patent ZL93206022.6 discloses a kind of Quick adjustable wrench, and this adjustable wrench comprises wrench body, movable jaw and worm screw, and worm screw has a groove vertically, and worm screw helical can be double end shape, also can be made up of several sections of discontinuity helicals.When pulling mouth and needing to regulate in a big way, rotary worm, makes the tooth bar on trough aligned movable jaw, is free to slide movable jaw to certain position, then continues rotary worm, makes it engage with the tooth bar on movable jaw, finely tunes, reach the opening size of needs.The adjustment of pulling mouthful size can be realized along the groove slip on worm screw and rotary worm by movable jaw, and have governing speed fast, operating efficiency is high, and structure is simple, easy to operate advantage.But, there is following defect:
Although the forced contact point of worm screw helical and tooth bar is set to four, but due to making precision problem and the tolerance reason of worm screw, and all helicals are all arranged on a worm screw, when making actual use, the forced contact point of worm screw helical and tooth bar generally only has one, thus causes worm screw easily to be skidded.
Chinese utility model patent CN 202640227 U discloses a kind of monkey wrench, comprises a wrench body and a worm gear; Described wrench body comprises one handle and an operate portions; Described operate portions comprises a fixed part, a movable part and a chute; The lower end of described movable part is located in chute, and the root edge of the lower end of described movable part is provided with teeth portion; Described operate portions also comprises a through hole, and described worm gear is located in described through hole, and engages with described teeth portion, when rotating described worm gear, and described worm gear and described teeth portion effect, and then drive described movable part to move towards or away from described fixed part; The screw thread of described worm gear has at least two helixes.Monkey wrench of the present utility model can the spacing of quick adjustment movable part and fixed part, and increases the moment of torsion that worm gear can bear.But there is following defect in this monkey wrench:
Although the forced contact point of worm gear helical and teeth portion is set to four, but due to making precision problem and the tolerance reason of worm gear, and all helicals are all arranged on a worm gear, when making actual use, the forced contact point of worm gear helical and tooth bar generally only has one, thus causes worm screw easily to be skidded.
In addition, at Chinese utility model patent CN 202640226 U, CN 202640228 in U and U.S. patent Nos US20030110904, be all only include a worm gear, this worm gear is provided with at least two helixes, but those patents exist above-mentioned defect equally.
Utility model content
The utility model object is to provide a kind of monkey wrench, although be set to four with the forced contact point solving existing worm gear helical or worm screw helical and tooth bar, but due to making precision problem and the tolerance reason of worm gear or worm screw, and all helicals are all arranged on a worm gear or worm screw, when making actual use, the forced contact point of worm gear helical or worm screw helical and tooth bar generally only has one, thus causes the technical matters that worm gear or worm screw are easily skidded.
The utility model object is realized by following technical scheme:
A kind of monkey wrench, comprises wrench body and worm gear, wherein,
Described wrench body comprises one handle and an operate portions;
Described operate portions comprises a fixed part, a movable part and a chute, and the lower end of described movable part is located in described chute, and the root edge of the lower end of described movable part is provided with teeth portion;
Described operate portions also comprises a through hole, and described worm gear is located in described through hole, and engages with described teeth portion; When rotating described worm gear, described worm gear and described teeth portion effect, and then drive described movable part to move towards or away from described fixed part;
Described worm gear is 2, has a difference at least, can drive another worm gear wheel during arbitrary worm gear wheel in the wheel space width of described two worm gears, wheel tooth height, gear teeth width, tooth profiles, gear teeth tilt angles, gear teeth flank of tooth lines.
Preferably, the number of leads of described worm gear is at least 1.
Preferably, the number of leads of described worm gear is 2.
Preferably, be provided with drive mechanism between described two worm gears, during arbitrary worm gear wheel, another worm gear can be driven to be synchronized with the movement by described drive mechanism.
Preferably, the wheel space width of described two worm gears is different, and the difference of the wheel space width of described two worm gears is less than 1/5 of larger wheel space width.
Preferably, the wheel tooth height of described two worm gears is different, and the difference of the wheel tooth height of described two worm gears is less than 1/5 of larger wheel tooth height.
Preferably, the gear teeth width of described two worm gears is different, and the difference of the gear teeth width of described two worm gears is less than 1/5 of larger gear teeth width.
Preferably, the gear teeth tilt angles of described two worm gears is different, and the difference of the gear teeth tilt angles of described two worm gears is less than 1/5 of larger gear teeth tilt angles.
Preferably, the tooth profiles of described two worm gears is different, and the tooth profiles of a worm gear is circular arc, and the tooth profiles of another worm gear is trapezoidal.
Preferably, the material of described two worm gears is different.
Compared with prior art, the utility model has following beneficial effect:
1, the worm gear of monkey wrench of the present utility model is two, when the helical of two worm gears can make actual use, the forced contact point of worm gear helical and tooth bar has two at least, make worm gear be not easy to skid, monkey wrench of the present utility model solves people and thirsts for solving always but fail the technical barrier that succeeds all the time.
2, monkey wrench of the present utility model is by arranging two worm gears, and these two worm gears are respectively equipped with at least one helical, can the spacing of quick adjustment movable part and fixed part, and increases the moment of torsion that worm gear can bear.
Accompanying drawing explanation
Fig. 1 is the structural representation of monkey wrench of the present utility model;
Fig. 2 is the exploded view of monkey wrench of the present utility model;
Fig. 3 is the schematic diagram that two worm gears of the present utility model separate;
Fig. 4 is the schematic diagram of two worm gear of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, illustrate the utility model.In order to enable those skilled in the art to clear, complete knowing content of the present utility model and the technical solution of the utility model can be implemented, in embodiment, disclose a large amount of details.But, obviously, do not have these details those skilled in the art can implement the technical solution of the utility model yet, reach the purpose of this utility model, realize effect of the present utility model.These details are the embodiments of the optimum that inventor selects through a large amount of experiments, are not used for limiting protection domain of the present utility model.Protection domain of the present utility model is as the criterion with the content of claims, and those skilled in the art's technical scheme that content obtains without the need to creative work disclosed in present specification is also in protection domain of the present utility model.
Refer to Fig. 1-4, a kind of monkey wrench, comprise wrench body and worm gear, wherein,
Described wrench body comprises one handle 1 and an operate portions 3;
Described operate portions 3 comprises fixed part 6, movable part 2 and a chute 33, and the lower end of described movable part 2 is located in described chute 33, and the root edge of the lower end of described movable part 2 is provided with teeth portion 21;
Described operate portions 3 also comprises a through hole 31, and described worm gear is located in described through hole 31, and engages with described teeth portion 21; When rotating described worm gear, described worm gear and described teeth portion 21 act on, and then drive described movable part 2 to move towards or away from described fixed part 6;
Described worm gear is 2, as worm gear 41,42, have a difference at least in the wheel space width of described two worm gears 41,42, wheel tooth height, gear teeth width, tooth profiles, gear teeth tilt angles, gear teeth flank of tooth lines, during arbitrary worm gear wheel, another worm gear wheel can be driven.The worm gear of monkey wrench of the present utility model is two, when the helical of two worm gears can make actual use, the forced contact point of worm gear helical and tooth bar has two at least, make worm gear be not easy to skid, monkey wrench of the present utility model solves people and thirsts for solving always but fail the technical barrier that succeeds all the time.
Wherein, a difference is had at least in the wheel space width of described two worm gears 41,42, wheel tooth height, gear teeth width, tooth profiles, gear teeth tilt angles, gear teeth flank of tooth lines, can be any one difference in the wheel space width of two worm gears, wheel tooth height, gear teeth width, tooth profiles, gear teeth tilt angles, gear teeth flank of tooth lines, also can be any combination difference wherein.The wheel space width of two worm gears, wheel tooth height, gear teeth width, tooth profiles, gear teeth tilt angles, gear teeth flank of tooth lines are set to have a difference at least, can make there is gap between two worm gears, thus another worm gear when making a worm gear wheel, can be driven to be synchronized with the movement.
The number of leads of described worm gear is at least 1.The screw-down torque that the screw thread of worm gear 41,42 produces is directly proportional to the lead angle of the screw thread of worm gear, and lead angle is directly proportional to helix number.The number of leads of described worm gear is one or more, can the spacing of quick adjustment movable part and fixed part when rotating two worm gears of the present utility model, and increases the moment of torsion that worm gear can bear.The number of leads regulates the speed of the spacing of movable part and fixed part faster more at most.The setting of the number of leads can be determined according to needs.
The number of leads on two worm gears can be identical, also can be different.If the number of leads on two worm gears is identical, then two worm gears are synchronized with the movement; If the number of leads on two worm gears is different, then the motion of two worm gears is asynchronous.
Further, the number of leads of described worm gear is preferably 2.When the number of leads of described worm gear is 2, the spacing of movable part and fixed part can be regulated more quickly and increase the moment of torsion that worm gear can bear, and structure is simple.
Further, be provided with drive mechanism between described two worm gears, during arbitrary worm gear wheel, another worm gear can be driven to be synchronized with the movement by described drive mechanism, the helical of two worm gears can be engaged with the teeth portion of movable part.
In the present embodiment, refer to Fig. 3, described drive mechanism comprises the semicircle projection 411,421 of the opposing end surface being arranged on adjacent two worm gears 41,42, and described two semicircle projections 411,421 can complement each other to form a circle, as shown in Figure 4.Make worm gear 41 rotational drive worm gear 42 to be synchronized with the movement by the cooperation of described two semicircle projections 411,421, and described two semicircle projections 411,421 can relative sliding in axis.
Further, the wheel space width of described two worm gears is different, and the difference of the wheel space width of described two worm gears is less than 1/5 of larger wheel space width.This structural design makes there is gap between two worm gears, thus another worm gear can be driven when making a worm gear wheel to be synchronized with the movement.
Further, the wheel tooth height of described two worm gears is different, and the difference of the wheel tooth height of described two worm gears is less than 1/5 of larger wheel tooth height.This structural design makes there is gap between two worm gears, thus another worm gear can be driven when making a worm gear wheel to be synchronized with the movement.
Further, the gear teeth width of described two worm gears is different, and the difference of the gear teeth width of described two worm gears is less than 1/5 of larger gear teeth width.This structural design makes there is gap between two worm gears, thus another worm gear can be driven when making a worm gear wheel to be synchronized with the movement.
Further, the gear teeth tilt angles of described two worm gears is different, and the difference of the gear teeth tilt angles of described two worm gears is less than 1/5 of larger gear teeth tilt angles.This structural design makes there is gap between two worm gears, thus another worm gear can be driven when making a worm gear wheel to be synchronized with the movement.
Further, the tooth profiles of described two worm gears is different, and the tooth profiles of a worm gear is circular arc, and the tooth profiles of another worm gear is trapezoidal.This structural design makes there is gap between two worm gears, thus another worm gear can be driven when making a worm gear wheel to be synchronized with the movement.
Further, the material of described two worm gears is different, makes there is gap between two worm gears, thus another worm gear can be driven when making a worm gear wheel to be synchronized with the movement.
Further, described monkey wrench also comprises bearing pin 52, pin-and-hole 32 and a spring 51, described pin-and-hole 32 is positioned in described wrench body, described bearing pin 52 penetrates described pin-and-hole 32 and is axially arranged in described worm gear 41,42, described worm gear 41,42 can rotate around described bearing pin 52, described bearing pin 52 is axially arranged in described spring 51, and described spring 51 is between described worm gear 41 and described wrench body.The shaft core position of pin-and-hole 32 is concordant with the shaft core position of worm gear 41,42.One end of bearing pin 52 and the exit portion of pin-and-hole 32 or completely concordant.Operator thumb wheel worm gear 41,42 time, the direction of pressure that spring 51 produces is the direction of movable part 2 away from fixed part 6.By the pressure of spring 51, when the thumb of operator does not rotate worm gear 41,42, can avoid the random rotation of worm gear 41,42 self, thus ensure when clamping work pieces, movable part 2 and worm gear 41,42 can be reliably stressed.When worm gear 41,42 is placed in the through hole 31 of spanner, worm gear 41,42 and through hole 31 are matched in clearance, by adding that in one end of worm gear 41 spring 51 can reduce rocking of worm gear 41,42.
Be only several specific embodiments of the application above, but the application is not limited thereto, the changes that any person skilled in the art can think of, all should drops in the protection domain of the application.
Claims (10)
1. a monkey wrench, comprises wrench body and worm gear, wherein,
Described wrench body comprises one handle and an operate portions;
Described operate portions comprises a fixed part, a movable part and a chute, and the lower end of described movable part is located in described chute, and the root edge of the lower end of described movable part is provided with teeth portion;
Described operate portions also comprises a through hole, and described worm gear is located in described through hole, and engages with described teeth portion; When rotating described worm gear, described worm gear and described teeth portion effect, and then drive described movable part to move towards or away from described fixed part;
It is characterized in that, described worm gear is 2, has a difference at least, can drive another worm gear wheel during arbitrary worm gear wheel in the wheel space width of described two worm gears, wheel tooth height, gear teeth width, tooth profiles, gear teeth tilt angles, gear teeth flank of tooth lines.
2. monkey wrench as claimed in claim 1, it is characterized in that, the number of leads of described worm gear is at least 1.
3. monkey wrench as claimed in claim 1, it is characterized in that, the number of leads of described worm gear is 2.
4. monkey wrench as claimed in claim 2, is characterized in that, be provided with drive mechanism, another worm gear can be driven to be synchronized with the movement during arbitrary worm gear wheel by described drive mechanism between described two worm gears.
5. monkey wrench as claimed in claim 1, is characterized in that, the wheel space width of described two worm gears is different, and the difference of the wheel space width of described two worm gears is less than 1/5 of larger wheel space width.
6. monkey wrench as claimed in claim 1, is characterized in that, the wheel tooth height of described two worm gears is different, and the difference of the wheel tooth height of described two worm gears is less than 1/5 of larger wheel tooth height.
7. monkey wrench as claimed in claim 1, is characterized in that, the gear teeth width of described two worm gears is different, and the difference of the gear teeth width of described two worm gears is less than 1/5 of larger gear teeth width.
8. monkey wrench as claimed in claim 1, is characterized in that, the gear teeth tilt angles of described two worm gears is different, and the difference of the gear teeth tilt angles of described two worm gears is less than 1/5 of larger gear teeth tilt angles.
9. monkey wrench as claimed in claim 1, is characterized in that, the tooth profiles of described two worm gears is different, and the tooth profiles of a worm gear is circular arc, and the tooth profiles of another worm gear is trapezoidal.
10. monkey wrench as claimed in claim 1, is characterized in that, the material of described two worm gears is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520260825.7U CN204546381U (en) | 2015-04-24 | 2015-04-24 | A kind of monkey wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520260825.7U CN204546381U (en) | 2015-04-24 | 2015-04-24 | A kind of monkey wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204546381U true CN204546381U (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520260825.7U Active CN204546381U (en) | 2015-04-24 | 2015-04-24 | A kind of monkey wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204546381U (en) |
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2015
- 2015-04-24 CN CN201520260825.7U patent/CN204546381U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |