CN110587527A - Adjustable wrench with self-tightening function - Google Patents
Adjustable wrench with self-tightening function Download PDFInfo
- Publication number
- CN110587527A CN110587527A CN201910378501.6A CN201910378501A CN110587527A CN 110587527 A CN110587527 A CN 110587527A CN 201910378501 A CN201910378501 A CN 201910378501A CN 110587527 A CN110587527 A CN 110587527A
- Authority
- CN
- China
- Prior art keywords
- handle
- fixed jaw
- adjusting screw
- jaw
- screw wheel
- 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.)
- Withdrawn
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 9
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 241000282693 Cercopithecidae Species 0.000 claims 1
- 229910000746 Structural steel Inorganic materials 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241000425571 Trepanes Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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
- B25B13/16—Spanners; Wrenches with adjustable jaws the jaws being slidable by screw or nut
-
- 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
- B25B13/20—Arrangements for locking the jaws
- B25B13/24—Arrangements for locking the jaws by cam, wedge, or friction means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Adjustable spanner with from tighting function belongs to machinery. The basic structure comprises: the movable jaw, the fixed jaw, the handle part, the adjusting screw wheel or the adjusting screw wheel; the handle and the fixed jaw are divided into 2 bodies and rotate around a rotation center, and the handle and the fixed jaw are in a fixed-axis rotation constraint relation, wherein the constraint is that a rotation axis is a circular track or a partial circular arc track, namely: a slideway; the handle is provided with a cam taking the rotation center as an axis: the rotation of the handle drives the cam to rotate, and 2 salient points on the cam also rotate around the rotation center, so that the 2 salient points on the cam push the adjusting screw wheel or the adjusting screw wheel to move, and the movable jaw is driven to move; selecting a return spring to keep the position relation between the handle and the fixed jaw; the rotation angle between the handle and the fixed jaw is limited by the stop bulge processed on the fixed jaw or by limiting the adjustment of the screw wheel or the adjustment of the displacement of the screw wheel, thereby greatly improving the performance.
Description
[ technical field ]
The invention belongs to the technical field of machinery, and particularly relates to a tool which synchronously adopts self-tightening force to lock a rotated part by utilizing a lever principle.
[ background art ]
A wrench is a common installation and removal tool. Hand tools for turning bolts, screws, nuts and other threaded fasteners for tightening openings or trepanning of bolts or nuts using the principle of leverage. The wrench is usually provided with an opening or a trepan for clamping the handle part and applying external force to the handle part so as to screw the bolt or the nut to hold the bolt or the nut, at one end or two ends of the handle part. When in use, the bolt or the nut can be screwed by applying external force on the handle part along the rotation direction of the thread, and the bolt or the nut is usually made of carbon structural steel or alloy structural steel.
Hand tools for turning bolts, screws, nuts and other threaded fasteners using the principle of leverage. The wrench is typically formed with an opening or socket at one or both ends of the shank for holding a bolt or nut. When the screw is used, external force is applied to the handle part along the rotation direction of the screw thread, and the bolt or the nut can be screwed. A spanner wrench is a common mounting and dismounting tool. Hand tools for turning bolts, screws, nuts and other threaded fasteners for tightening openings or trepanning of bolts or nuts using the principle of leverage.
The wrenches are basically divided into two types, namely a dead wrench and an adjustable wrench; the component between the wrench opening is called two jaws, the former refers to a wrench which has fixed numbers written on, and the latter refers to an adjustable wrench. The types are as follows: solid wrench: one or both ends of the nut are provided with openings with fixed sizes for screwing nuts or bolts with certain sizes. Plum blossom spanner: the two ends are provided with the working ends with hexagonal holes or dodecagonal holes, so that the spanner is suitable for occasions with narrow working space and incapability of using common spanners. Two-purpose spanner: one end of the wrench is the same as the single-head solid wrench, the other end of the wrench is the same as the double offset ring spanner, and bolts or nuts with the same specification are screwed at the two ends of the wrench. An adjustable wrench: the width of the opening can be adjusted within a certain size range, and bolts or nuts with different specifications can be screwed. The structure of the spanner is characterized in that a fixed jaw is made into a flat clamp recess with thin teeth; one end of the movable jaw is made into a flat jaw; the other end is made into a concave jaw with fine teeth; the worm is pressed downwards, the movable jaw can be quickly taken down, and the position of the jaw is changed. Hook-shaped wrenches: also known as crescent wrench, is used for screwing flat nuts with limited thickness, etc. A socket wrench: the sleeve is composed of a plurality of sleeves with hexagonal holes or dodecagonal holes and a plurality of accessories such as handles, extension rods and the like, and is particularly suitable for screwing bolts or nuts with very narrow positions or very deep recesses. The sleeve is divided into metric system and English system, although the sleeve has the same concave shape, the outer diameter, the length and the like are designed according to the shape and the size of corresponding equipment, and the country does not have unified regulations, so the sleeve is relatively flexible in design and meets the requirements of the public. The socket wrench is generally provided with a socket head with various specifications, a swing handle, a connecting rod, a universal joint, a screwdriver joint, an elbow handle and the like for being sleeved with a hexagonal nut. The sleeve head of the socket wrench is a concave hexagonal cylinder; the wrench is usually made of carbon structural steel or alloy structural steel, the head portion of the wrench has a prescribed hardness, and the middle and handle portions are elastic. An inner hexagonal wrench: the L-shaped hexagonal rod-shaped wrench is specially used for screwing the inner hexagonal screw. The type of the inner hexagon spanner is according to the opposite side size of hexagon, and the size of bolt has national standard. The application is as follows: the nut is specially used for fastening or disassembling the round nuts on machine tools, vehicles and mechanical equipment. A torque wrench: it can display the applied torque when screwing the bolt or the nut; or a light or audible signal may be emitted when the applied torque reaches a specified value. The torque wrench is suitable for a set-up with a well-defined torque.
The wrench is a single-head solid wrench, a double-head solid wrench, an adjustable wrench, a box wrench, a multi-purpose wrench, a knocking wrench, a socket screw driver, a torque wrench, a cross wrench, a ratchet wrench, a hook wrench, an inner hexagonal wrench, an inner square wrench, a manual clutch type torque wrench, a pipe wrench, a T-shaped wrench, an L-shaped wrench, a trident wrench, a crescent wrench, an oil drum wrench, a tire wrench, a spark plug wrench, a filter wrench, a combination wrench, other wrenches and the like. The torque wrench is divided into a sound wrench, a pointer wrench and a digital display wrench. Use of the manual wrench: the corresponding wrench is selected according to the characteristics of the fastened fastener. Screwing, namely holding the tail end of the wrench handle by hand and screwing by force in a clockwise direction; unscrewing, rotating counterclockwise. The manual spanner has the characteristics that: simple operation, low price and high labor intensity.
The open spanner has the following uses and technical characteristics: the screw is the main fastener in mechanical equipment, and the opening wrench is the important instrument of machinery trade processing, production, maintenance, and this project is the revolution of traditional wrench tool, and it has several following advantages. The wrench can work quickly, the working speed is three to four times faster than that of a traditional wrench, and the working speed is higher than that of a quick wrench. One open wrench can be adapted to 2-6 gauge screws, while a double-ended wrench is only adapted to 2 screws. One opening spanner is equivalent to 2-3 rigid (2) spanners, and is equivalent to a movable spanner which can work quickly without adjusting the opening.
The service life is long, the wrench can not be damaged, and the front quick wrench is easy to damage. The manufacturing process is simple, and the cost is lower than that of a rigid hand. Light weight, convenient carrying and labor saving. Quenching, one of the basic means of strengthening steel, is the traditional method of achieving high overall mechanical properties in steel by quenching the steel to martensite followed by tempering to increase toughness. The rigidity and the strength of the spanner are improved after the spanner is quenched, so that the spanner is more durable and has higher quality.
The defects of the existing spanner are as follows: the adjustable spanner is not easy to lock and is easy to loosen during use, so that the installed screw and nut are easy to destroy and slip, the existing loosening cannot be recovered, and the other reason for easy slip is also caused.
For a tubular object wrench with a certain opening angle, the object can be clamped only by force and skill of the angle of the wedge, and the operation skill is required.
[ summary of the invention ]
The purpose of the invention is as follows: the fixed jaw of the existing adjustable wrench is skillfully utilized as a fulcrum, and the clamping state of the movable jaw is adjusted by utilizing the lever principle, so that the adjustable wrench is convenient to use.
The invention has the characteristics that: the force is exerted by the force; the force applied to the handle during pulling is transmitted to the jaw of the wrench through the lever mechanism, and the jaw is clamped more tightly with larger force!
The invention realizes the purpose through the following technical scheme:
the structure of the wrench of the invention comprises: movable jaw, fixed jaw, handle, reset spring, adjusting screw wheel or adjusting screw wheel and pivot etc..
Basic assembly relation: the handle rotates around a rotation center fixed on the fixed jaw, the rotation center is restrained by a rotating shaft fixed on the fixed jaw or a rotation slideway processed on the fixed jaw, the fixed jaw restrains the columnar part of the movable jaw to freely slide through the slideway or the chute, and the sliding control depends on the connection of the screw thread of the adjusting screw wheel or the adjusting nut wheel with the rack part or the screw rod part of the movable jaw, so that the displacement of the movable jaw (the distance between the movable jaw and the fixed jaw) can be controlled by rotating the adjusting screw wheel or the adjusting nut wheel, and the displacement is locked, thereby controlling the opening width between the two jaws; if the handle is provided with a cam taking the rotation center as the axis center: the left-handed or right-handed rotation of the handle can drive 2 salient points on the cam to rotate around the rotation center together, so that the 2 salient points on the cam push the adjusting screw wheel or the adjusting nut wheel to move, and the movable jaw is driven to move; the return spring is an optional component: the handle is elastically connected with the fixed jaw, the two ends of the handle are respectively fastened on the handle and the fixed jaw, and when the wrench is wrenched without external moment, the reset spring keeps the position relation between the handle and the fixed jaw.
It is to be emphasized that: when the device works, the moment of the cam contact keeps a balance relation with the resistance moment of a pulled object; the resistance moment of the object to be pulled is close to a couple state, when the length of the force arm of the cam contact is smaller than the size of the object to be pulled, the force of the cam contact is enough to push the adjusting screw wheel or the adjusting screw wheel to move, the resistance moment of the object to be pulled can not enable the opening to be opened, even if a gap originally exists, the opening can be tightly closed, and the moment principle of statics determines the opening.
The installation position of the return spring should be considered not to cause too much force to the displacement of the adjusting screw wheel or the adjusting screw wheel, and the return spring cannot be adjusted manually. In an installation position where no excessive force is generated.
Because of the large force of the cam contact, surface quenching treatment or coating with a wear-resistant local layer is required.
The constrained sliding between the movable jaw and the fixed jaw can be limited by the constrained matching relation between the cylinder and the hole, the constrained relation of the sliding groove, the rotation angle between the handle and the fixed jaw, and the limited rotation angle can be finished by a blocking bulge processed on the fixed jaw, or still be constrained by limiting and adjusting a screw wheel or adjusting the displacement of the screw wheel (the displacement distance of the wheel is limited by the size of an opening on the fixed jaw).
The constraint relation of the fixed axis rotation between the handle and the fixed jaw can be a complete rotating shaft or a circular track, and the circular track can be even a partial circular arc track (slide way).
The invention has the advantages that under the condition of the same use torque, larger working torque is applied to the object to be pulled, and the working effect is better.
[ description of the drawings ]
The invention is further described in the following preferred embodiments with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of an adjustable wrench with a self-tightening function.
Fig. 2 obtains a schematic view of the principle of the autofrettage.
Fig. 3 is a schematic structural view of a self-tightening adjustable wrench with a lead screw adjusting wheel.
Description of reference numerals:
(1) movable jaw
(2) Fixed jaw
(3) Handle (CN)
(4) Reset spring
(5) Lead screw adjusting wheel
(6) Screw adjusting wheel
(7) Rotating shaft
(8) Arm of force
(9) Spring fastening end 1
(10) Spring fastening end 2
(11) Pulled object
(12) Cam contact 1
(13) Cam contact 2
(14) Gasket
(15) Distance of downward movement
(16) Cam arm of force
(17) Restraint shaft
(18) Cam contact
(19) Restraint slide
(20) Displacement of
[ examples of embodiment ]
As shown in fig. 1 and 2: the movable jaw (1) is restrained by the screw adjusting wheel (6), and the threads on two sides of the screw thread driving of the screw adjusting wheel (6) enable the movable jaw (1) to displace relative to the fixed jaw (2) to change the opening width; the handle (3) is restrained by a rotating shaft (7) fixed on the fixed jaw (2) to rotate freely, and 2 contacts of the cam which is fixedly installed together are respectively: the cam contacts 1 and 2 and 13 abut against the end face of the screw adjusting wheel (6), the gasket (14) has a rotation stopping function, and the inner hole square is matched with a non-round screw rod, so that the screw rod cannot rotate around the screw rod part of the movable jaw (1).
End 2 of the return spring (4): the spring fastening end 1(9) and the spring fastening end 2(10) are respectively and rigidly connected with the fixed jaw (2) and the handle (3); the natural shape of the return spring (4) can keep the position relation of 2, so that 2 contacts of the cam simultaneously contact with the end surface of the screw adjusting wheel (6); the stiffness of the spring may be chosen to be sufficiently strong.
When the object (11) is wrenched, the upper jaw and the lower jaw of the wrench apply a couple (F) to the object, and H is a force arm (8); l is the force arm of the cam contacts 1 and 12, and from the static balance perspective, as long as the dimension of the object to be wrenched is smaller than L, the reaction force of the object to be wrenched (11) on the jaw 2 is smaller than the force of the cam contacts, and the jaw 2 cannot be opened; if there is a gap in the 2 jaw, a downshifting distance (15) - - -K value must occur.
N1、N2The left-hand torque and the right-hand torque applied to the handle are respectively transmitted to the 2 jaw parts through the contact points of the cam, and working torque is generated.
As shown in fig. 3: is a common adjustable wrench operation principle diagram under the same principle, and the partial screw structure of the movable jaw (1) plays a role of a sliding block; a constraint slide way (19) and a hole (in detail, a conventional wrench) for accommodating a sliding block are machined on the fixed jaw (2), the handle (3) and the fixed jaw (2) are connected through a rotating shaft (7) of a hinged shaft and rotate freely, the constraint shaft (17) penetrates through a central hole of the screw rod adjusting wheel (5), so that the screw rod adjusting wheel (5) can freely slide along the axial direction of the constraint shaft (17), and when the handle (3) is applied with a moment in the arrow direction in the drawing, a cam contact (18) of a cam rigidly mounted with the handle (3) pushes the screw rod adjusting wheel (5) to slide along the axial direction of the constraint shaft (17) for displacement (20), so that the width of a jaw opening is narrowed, and a pulled object (11) is clamped.
The present invention is not limited to the above-described preferred embodiments:
any other products with various forms can be obtained in the light of the present invention, but any changes in shape or structure, which are the same or similar to the technical solutions of the present application, fall within the protection scope of the present invention.
Claims (2)
1. Adjustable spanner with self-tightening function; the structure includes: the movable jaw, the fixed jaw, the handle part, the adjusting screw wheel or the adjusting screw wheel; the basic assembly relation is as follows: the movable jaw slides by depending on a sliding chute or a hole of the fixed jaw, the handle part is connected with the fixed jaw, the external thread or the internal thread of the adjusting screw wheel or the adjusting screw wheel drives the thread part of the movable jaw, and the movable jaw is driven to slide by rotation or translation; the method is characterized in that: the handle and the fixed jaw are divided into 2 bodies and rotate around a rotation center, and the handle and the fixed jaw are in a fixed-axis rotation constraint relation, wherein the constraint is that a rotation axis is a circular track or a partial circular arc track, namely: a slideway; the handle is provided with a cam taking the rotation center as an axis: the rotation of the handle drives the cam to rotate, and 2 salient points on the cam also rotate around the rotation center, so that the 2 salient points on the cam push the adjusting screw wheel or the adjusting screw wheel to move, and the movable jaw is driven to move; selecting a return spring to keep the position relation between the handle and the fixed jaw; the rotation angle between the handle and the fixed jaw is limited by a blocking bulge processed on the fixed jaw or by limiting the displacement of the adjusting screw wheel or the adjusting screw wheel.
2. The return spring in a monkey wrench with a self-tightening function according to claim 1, wherein: the return spring is an optional component, and two ends of the spring are respectively fastened on the handle and the fixed jaw.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810608279 | 2018-06-13 | ||
| CN201810608279X | 2018-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110587527A true CN110587527A (en) | 2019-12-20 |
Family
ID=68852571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910378501.6A Withdrawn CN110587527A (en) | 2018-06-13 | 2019-05-08 | Adjustable wrench with self-tightening function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110587527A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US291266A (en) * | 1884-01-01 | Said yakdegeift assicmob to said abmstbom | ||
| GB320237A (en) * | 1928-10-15 | 1929-10-10 | Arthur Napolion Plante | Improvements in wrenches |
| US2498235A (en) * | 1945-08-21 | 1950-02-21 | Hiram E Barber | Adjustable wrench having plier-like handles |
| US2940345A (en) * | 1958-05-19 | 1960-06-14 | George B Farina | Quickly adjustable wrench with inclined washer locking means |
| US4151764A (en) * | 1978-02-13 | 1979-05-01 | Lorne Bunn | Pipe wrench locking device |
| WO1983002582A1 (en) * | 1982-02-02 | 1983-08-04 | Astrand, Ingvar | Wrench |
| CN2091205U (en) * | 1990-11-25 | 1991-12-25 | 中国人民解放军第五七○四工厂 | Adjustable self-tightening pipe wrench |
| US5138912A (en) * | 1991-07-31 | 1992-08-18 | Dyke Harold J | Locking pipe wrench |
| US6595089B1 (en) * | 2001-05-07 | 2003-07-22 | Thomas Stojanowski | Ratcheting adjustable wrench |
-
2019
- 2019-05-08 CN CN201910378501.6A patent/CN110587527A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US291266A (en) * | 1884-01-01 | Said yakdegeift assicmob to said abmstbom | ||
| GB320237A (en) * | 1928-10-15 | 1929-10-10 | Arthur Napolion Plante | Improvements in wrenches |
| US2498235A (en) * | 1945-08-21 | 1950-02-21 | Hiram E Barber | Adjustable wrench having plier-like handles |
| US2940345A (en) * | 1958-05-19 | 1960-06-14 | George B Farina | Quickly adjustable wrench with inclined washer locking means |
| US4151764A (en) * | 1978-02-13 | 1979-05-01 | Lorne Bunn | Pipe wrench locking device |
| WO1983002582A1 (en) * | 1982-02-02 | 1983-08-04 | Astrand, Ingvar | Wrench |
| CN2091205U (en) * | 1990-11-25 | 1991-12-25 | 中国人民解放军第五七○四工厂 | Adjustable self-tightening pipe wrench |
| US5138912A (en) * | 1991-07-31 | 1992-08-18 | Dyke Harold J | Locking pipe wrench |
| US6595089B1 (en) * | 2001-05-07 | 2003-07-22 | Thomas Stojanowski | Ratcheting adjustable wrench |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191220 |