CN104786177A - Adjustable spanner - Google Patents
Adjustable spanner Download PDFInfo
- Publication number
- CN104786177A CN104786177A CN201510201724.7A CN201510201724A CN104786177A CN 104786177 A CN104786177 A CN 104786177A CN 201510201724 A CN201510201724 A CN 201510201724A CN 104786177 A CN104786177 A CN 104786177A
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- CN
- China
- Prior art keywords
- worm gear
- hole
- monkey wrench
- wrench
- movable part
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/10—Spanners; Wrenches with adjustable jaws
- B25B13/12—Spanners; Wrenches with adjustable jaws the jaws being slidable
- B25B13/14—Spanners; Wrenches with adjustable jaws the jaws being slidable by rack and pinion, worm or gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses an adjustable spanner which comprises a spanner body and worm wheels. The spanner body comprises a handle and a working part. The working part comprises a fixed part, a movable part and a sliding groove, the lower end of the movable part is arranged in the sliding groove, and a tooth part is arranged at the bottom edge of the lower end of the movable part. The working part further comprises a through hole, and the worm wheels are arranged in the through hole and meshed with the tooth part. When the worm wheels are rotated, the worm wheels act on the tooth part, and the movable part is driven to move towards or away from the fixed part. The number of the worm wheels is at least two, and the adjacent worm wheels can be driven to rotate when any worm wheel rotates. Compared with the prior art, the number of the worm wheels of the adjustable spanner is at least two, at least two stress contact points of spirals of the worm wheels and the a rack can be formed through the spirals of the worm wheels in the practical using process, and thus the worm wheels are not prone to skidding.
Description
Technical field
The present invention 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 also 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, there is above-mentioned defect in those patents equally.
Summary of the invention
The object of the invention 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 object of the invention 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 at least 2, can drive adjacent worm gear wheel during arbitrary worm gear wheel.
Preferably, described worm gear is 2.
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, described each worm gear wheel space width, wheel tooth height, gear teeth width, tooth profiles, gear teeth tilt angles, have a difference at least in gear teeth flank of tooth lines.
Preferably, between adjacent worm gear, be provided with drive mechanism, adjacent worm gear can be driven to be synchronized with the movement by described drive mechanism.
Preferably, described drive mechanism comprises the semicircle projection of the opposing end surface being arranged on two adjacent worm gears, and described two semicircle projections can complement each other to form a circle.
Preferably, described monkey wrench also comprises a bearing pin, a pin-and-hole and a spring, described pin-and-hole is positioned in described wrench body, described bearing pin penetrates described pin-and-hole and is axially arranged in described worm gear, described worm gear can rotate around described bearing pin, described bearing pin is axially arranged in described spring, and described spring is between described worm gear and described wrench body.
Preferably, slip structure is prevented, the sidewall contact of described end face I and described through hole apart from being provided with between the end face I of described spring worm gear farthest and the sidewall of described through hole.
Preferably, the matsurface preventing from slip structure from comprising being arranged on the matsurface on end face I described in and be arranged on the sidewall of through hole.
Compared with prior art, the present invention has following beneficial effect:
1, the worm gear of monkey wrench of the present invention is at least two, 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, make worm gear be not easy to skid, monkey wrench of the present invention solves people and thirsts for solving always but fail the technical barrier that succeeds all the time.
2, monkey wrench of the present invention is by arranging plural worm gear, each worm gear is 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.
3, the spring of monkey wrench of the present invention is between worm gear and wrench body, and both ends of the spring abuts against worm gear and wrench body respectively, and the direction of the pressure of generation is the direction of movable part away from fixed part.By the pressure of this spring, when operator does not rotate worm gear, can avoid the random rotation of worm gear self, thus ensure when clamping work pieces, movable part and worm gear can be reliably stressed.
Accompanying drawing explanation
Fig. 1 is the structural representation of monkey wrench of the present invention;
Fig. 2 is the exploded view of monkey wrench of the present invention;
Fig. 3 is the schematic diagram that two worm gears of the present invention separate;
Fig. 4 is the schematic diagram of two worm gear of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, illustrate the present invention.In order to enable those skilled in the art to clear, complete knowing content of the present invention and technical scheme of the present invention 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 technical scheme of the present invention yet, reach object of the present invention, realize effect of the present invention.These details are the embodiments of the optimum that inventor selects through a large amount of experiments, are not used for limiting the scope of the invention.Protection scope of the present invention 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 scope of the present invention.
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 at least 2, can drive adjacent worm gear wheel during arbitrary worm gear wheel.The worm gear of monkey wrench of the present invention is at least two, 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, make worm gear be not easy to skid, monkey wrench of the present invention solves people and thirsts for solving always but fail the technical barrier that succeeds all the time.
In the present embodiment, described worm gear is 2, as worm gear 41,42.When can make actual use by arranging two worm gears 41,42, the forced contact point of worm gear helical and tooth bar has two at least, make worm gear be not easy to skid, and structure is simpler.
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 invention, 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 each worm gear can be identical, also can be different.If the number of leads on each worm gear is identical, then each worm gear is synchronized with the movement; If the number of leads on each worm gear is different, then the motion of each worm gear 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, described each worm gear wheel space width, wheel tooth height, gear teeth width, tooth profiles, gear teeth tilt angles, have a difference at least in gear teeth flank of tooth lines.Can be any one difference in the wheel space width of each worm gear, 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 each worm gear, 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 adjacent worm gear, thus adjacent worm gear when making a worm gear wheel, can be driven to be synchronized with the movement.
Further, be provided with drive mechanism between adjacent worm gear 41,42, a worm gear 41 rotates through described drive mechanism and adjacent worm gear 42 can be driven to be synchronized with the movement, and the helical of each worm gear 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 adjacent 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, 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.
Further, the cross section of described through hole 31 is roughly rectangular, prevents slip structure, the sidewall contact of described end face I and described through hole 31 apart from being provided with between the end face I of described spring 51 worm gear 42 farthest and the sidewall of described through hole 31.Prevent slip structure from can increase frictional force between described end face I and the sidewall of described through hole by arranging, thus prevent worm gear 41,42 from skidding further.
The described slip structure that prevents can be the matsurface be arranged on end face I and the matsurface be arranged on the sidewall of through hole.By arranging the matsurface of the sidewall of described end face I and described through hole to increase the frictional force between described end face I and the sidewall of described through hole, thus can prevent worm gear from skidding further.The described slip structure that prevents also can hinder the sidewall structure in relative rotation of described end face I and described through hole for other.
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 at least 2, can drive adjacent worm gear wheel during arbitrary worm gear wheel.
2. monkey wrench as claimed in claim 1, it is characterized in that, described worm gear is 2.
3. monkey wrench as claimed in claim 1, it is characterized in that, the number of leads of described worm gear is at least 1.
4. monkey wrench as claimed in claim 1, it is characterized in that, the number of leads of described worm gear is 2.
5. the monkey wrench as described in claim 1 or 3 or 4, is characterized in that, has a difference at least in the wheel space width of described each worm gear, wheel tooth height, gear teeth width, tooth profiles, gear teeth tilt angles, gear teeth flank of tooth lines.
6. monkey wrench as claimed in claim 5, is characterized in that, be provided with drive mechanism between adjacent worm gear, adjacent worm gear can be driven to be synchronized with the movement by described drive mechanism.
7. monkey wrench as claimed in claim 6, it is characterized in that, described drive mechanism comprises the semicircle projection of the opposing end surface being arranged on two adjacent worm gears, and described two semicircle projections can complement each other to form a circle.
8. monkey wrench as claimed in claim 1, it is characterized in that, described monkey wrench also comprises a bearing pin, a pin-and-hole and a spring, described pin-and-hole is positioned in described wrench body, described bearing pin penetrates described pin-and-hole and is axially arranged in described worm gear, described worm gear can rotate around described bearing pin, and described bearing pin is axially arranged in described spring, and described spring is between described worm gear and described wrench body.
9. monkey wrench as claimed in claim 8, is characterized in that, prevents slip structure, the sidewall contact of described end face I and described through hole apart from being provided with between the end face I of described spring worm gear farthest and the sidewall of described through hole.
10. monkey wrench as claimed in claim 9, is characterized in that, described in the matsurface that prevents from slip structure from comprising being arranged on the matsurface on end face I and be arranged on the sidewall of through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201724.7A CN104786177A (en) | 2015-04-24 | 2015-04-24 | Adjustable spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201724.7A CN104786177A (en) | 2015-04-24 | 2015-04-24 | Adjustable spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104786177A true CN104786177A (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510201724.7A Pending CN104786177A (en) | 2015-04-24 | 2015-04-24 | Adjustable spanner |
Country Status (1)
| Country | Link |
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| CN (1) | CN104786177A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2207910Y (en) * | 1994-01-25 | 1995-09-20 | 刘瑞刚 | Monkey-wrench |
| JP4562048B1 (en) * | 2009-10-27 | 2010-10-13 | 大輔 ▲高▼室 | Adjustable wrench with movable jaw movement control mechanism |
| EP2327514A2 (en) * | 2009-11-25 | 2011-06-01 | Proxene Tools Co., Ltd. | Reversible monkey wrench |
| CN202622629U (en) * | 2012-03-22 | 2012-12-26 | 王佐臣 | Zero-clearance adjustable spanner |
| CN202640228U (en) * | 2012-01-17 | 2013-01-02 | 杭州巨星工具有限公司 | Adjustable spanner |
| CN203993657U (en) * | 2014-07-21 | 2014-12-10 | 台州得邦工具制造有限公司 | Portable activity spanner |
| CN204053895U (en) * | 2014-07-10 | 2014-12-31 | 陈淑汝 | Adjustable spanner structure |
-
2015
- 2015-04-24 CN CN201510201724.7A patent/CN104786177A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2207910Y (en) * | 1994-01-25 | 1995-09-20 | 刘瑞刚 | Monkey-wrench |
| JP4562048B1 (en) * | 2009-10-27 | 2010-10-13 | 大輔 ▲高▼室 | Adjustable wrench with movable jaw movement control mechanism |
| EP2327514A2 (en) * | 2009-11-25 | 2011-06-01 | Proxene Tools Co., Ltd. | Reversible monkey wrench |
| CN202640228U (en) * | 2012-01-17 | 2013-01-02 | 杭州巨星工具有限公司 | Adjustable spanner |
| CN202622629U (en) * | 2012-03-22 | 2012-12-26 | 王佐臣 | Zero-clearance adjustable spanner |
| CN204053895U (en) * | 2014-07-10 | 2014-12-31 | 陈淑汝 | Adjustable spanner structure |
| CN203993657U (en) * | 2014-07-21 | 2014-12-10 | 台州得邦工具制造有限公司 | Portable activity spanner |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150722 |
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| RJ01 | Rejection of invention patent application after publication |