CN201175878Y

CN201175878Y - Packaging adjustable spanner

Info

Publication number: CN201175878Y
Application number: CNU2007201870163U
Authority: CN
Inventors: 朱拥军
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-31
Filing date: 2007-12-31
Publication date: 2009-01-07
Anticipated expiration: 2017-12-31

Abstract

The utility model relates to a capsulated adjustable wrench, which belongs to the technical field of hardware tools, and comprises a handle with one end fixed with a hook-shaped wrench head. A worm is disposed in a guide groove at the joint of the handle and the wrench head, a movable opening with worm teeth on one side thereof is disposed in the guide groove, which forms a moving pair and meshes with the worm. A caulking groove along the length direction is arranged on the handle, a cover plate is mounted in the caulking groove and is provided with a rotational ball screw, wherein the front end of the ball screw is jointed with the worm via a gear driving mechanism, a pushbutton component is arranged on the cover plate, and a tubular dust-proof shield is coated outside the ball screw and is provided with an open slot which is staggered with threads of the ball screw. The swing angle between the starting point and the end point ranges from 190 degrees to 290 degrees, and the lower end of the pushbutton component is inserted into the threads of the ball screw via the open slot on the tubular dust-proof shield. Because the ball screw is covered by the tubular dust-proof shield instead of being exposed, dirt can be prevented from falling into the ball screw, thereby avoiding clamping stagnation of driving, and the driving portion has much reliable properties, higher working efficiency and longer service life.

Description

The packaged type adjustable wrench

Technical field

The utility model relates to a kind of spanner, and specifically a kind of improvement of adjustable wrench transmission mechanism belongs to the hardware ﹠ tools technical field.

Background technology

Adjustable wrench is that necessary tool is assembled, repaired, safeguards to various civilian, military plant equipment, and at numerous areas such as building, automobile space flight, and even family all is widely used.

The existing hundreds of years history of tradition adjustable wrench, its structure is well-known.During use, need drive away with thumb and forefinger and change the worm gear rotation, regulate the size of spanner opening, and regulate slower, especially when the user is stained with greasy dirt on hand or wears the gloves operation, open and close very inconveniently, simultaneously in use the worm screw pin also can often come off, and repeatable operation makes the people feel convenient inadequately.

Operation for convenience, people innovate on the transmission mechanism of adjustable wrench.Retrieval is found, application number is 91206165.0, name is called the spanner of " plug-type speeder wrench ", its inventive point is, the slip hairclipper is housed in the wrench body, screw rod, the slip hairclipper is enclosed within on the screw rod, has spiral bar or helicla flute in the slip hairclipper, match with screw rod, screw rod one end connects a drive bevel gear, and this drive bevel gear and the driven wheel of differential engagement of opening on the pincers screw rod push away or draw the slip hairclipper along wrench body, by cooperating of slip hairclipper and screw rod, make the screw rod rotation, drive bevel gear is rotated thereupon, drives the driven wheel of differential rotation that is engaged with, be further rotated out the pincers screw rod, open or close moving jaw by the tooth bar on the moving jaw.Can save the operating time during use, very convenient.This invention has obtained significant progress undoubtedly on traditional adjustable wrench basis.Yet this spanner in use is easier to produce catching phenomenon.By analysis, the main cause that produces catching phenomenon is: transmission mechanism, especially screw rod are open fully, snap in dirt easily and cause clamping stagnation; In addition, two Bevel Gear Transmission are because of the play of screw rod and push rod in the transmission mechanism, and contact precision is difficult to guarantee, also causes the jam phenomenon easily.In addition, this spanner also has the following disadvantages (1), cover plate nonintegrated structure, and poor rigidity is easier to damage or distortion; (2) because two number of teeth in bevel gears and hypoid gears are identical, and the helical pitch of push rod groove is long again, and the pitch of worm screw is less, causes long the use inadequately of move distance of push button to make things convenient for.

The utility model content

Primary and foremost purpose of the present utility model is: the problem that exists in using at above existing plug-type speeder wrench proposes a kind of open packaged type adjustable wrench of transmission mechanism of avoiding, thereby eliminates because of falling into the catching phenomenon that dirt causes.

The further purpose of the utility model is: by the improvement to transmission mechanism, overcome the jam phenomenon that two Bevel Gear Transmission cause.

In order to reach above primary and foremost purpose, packaged type adjustable wrench of the present utility model comprises the handle of the fixing hook-shaped spanner of an end, in the guide groove of described handle and spanner junction worm screw is housed, the movable port that one side is shaped on wrom tooth is contained in the guide groove, form moving sets, and and worm engaging, be shaped on caulking groove along its length on the described handle, in the described caulking groove cover plate is housed, rotatable ball screw is housed on the described cover plate, the front end of described ball screw is connected with worm screw by gear drive, the push button assembly is housed on the described cover plate, its improvements are: described screw jacket is equipped with the tubulose dust cover, described tubulose dust cover is shaped on the fluting with the dislocation of ball screw screw thread, the Origin And Destination of described fluting is the swing angle of 190 degree-290 degree, and insert in the screw thread of ball screw by the fluting on the tubulose dust cover lower end of described push button assembly.

The further improvement of above packaged type adjustable wrench is that the gear of described gear drive is equipped with the gear dust cover that profile matches with it outward.

During use,, can order about the ball screw rotation, rotate, and then drive movable port and move, reach the purpose of regulating the spanner openings of sizes along guide groove thereby the gear drive by its front end drives worm screw as long as with promoting push button before and after the finger.Because original open ball screw is covered by the tubulose dust cover, has therefore avoided dirt to fall into screw thread, thereby has prevented the clamping stagnation of transmission.And the dust cover that the gear drive installation matches not only can prevent dust, and further guarantees the transmission smoothness, and compact conformation.

In order to reach above further purpose, in the utility model packaged type adjustable wrench, described gear drive is made of active roller gear and the engagement of passive face gear.The special gear transmission mechanism that this and conventional Bevel Gear Drive is different not only can be realized the rotation transmission of concurrent aces, and can overcome the jam that the engagement of two conical gears causes because of axial float, thereby the ingenious clamping stagnation problem that solved, the adjusting smoothness that guarantees to pull mouth.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the structural representation of the utility model embodiment one.

Fig. 2 is the cutaway view of Fig. 1.

Fig. 3 is push button and a cover plate local enlarged diagram partly among Fig. 2.

Fig. 4 is the local enlarged diagram of Fig. 1 cover plate.

The specific embodiment

Embodiment one

The packaged type adjustable wrench of present embodiment as depicted in figs. 1 and 2, the corresponding label of each part is as follows among the figure: handle 1, worm screw 2, movable port 3, passive face gear 4, dustproof oil storage locking screw plug 5, the spacing card of ball screw (spring) 6, active roller gear 7, buffer spring 8, stop screw 9, polygonal plum blossom hole 10, ball screw 11, the lower end is the latch 12 of bulb, push button 13, whole cover plate 14, fixed screw 15, handguard sleeve 16, gear dust cover 17, ball screw tubulose dust cover 18.

As seen from the figure, an end and the hook-shaped spanner of handle 1 are connected as a single entity, and handle 1 is shaped on guide groove with the junction of spanner, and rotatable worm screw 2 wherein is housed.One side of movable port 3 is shaped on wrom tooth, is contained in and forms moving sets in the guide groove, and mesh with worm screw 2.Lower end of worm screw 2 and passive face gear 4 are connected, and by dustproof oil storage locking screw plug 5 axial lockings, are set with gear dust cover 17 outside the passive face gear 4, and stop screw 9 can be eliminated the axial float of worm screw.Be shaped on caulking groove along its length on the handle 1, feet is equipped with rotatable ball screw 11 before and after the cover plate 14 (referring to Fig. 4) that shapes by integral body in this caulking groove, preceding feet has stopper slot, the correspondence position of ball screw 11 has draw-in groove, wherein clamp C shape card or jump ring, thereby play the axial limiting effect, assemble very convenient.The outside suit of ball screw 11 have with ball screw on the screw rod dust cover 18 (referring to Fig. 3) of screw thread reverse acting spiral groove, front end is connected with roller gear 7 initiatively.This is roller gear 7 and passive face gear 4 engagements initiatively, thereby ball screw 11 is connected with worm screw 2 by gear drive.What deserves to be mentioned is, as adopting two conventional Bevel Gear Drive to be easy to, adopt roller gear and face gear transmission herein, then simply and cleverly solved the clamping stagnation problem, make that the adjusting of pulling mouth is very smooth because of the axial float clamping stagnation.Fixedly have the cover plate of chute on the caulking groove by fixed screw 15, the push button 13 of slip is housed in this cover plate chute, it is the latch 12 of bulb that the lower end is housed in the mider hole of this push button, the bulb of the latch lower end of this bulb passes screw rod dust cover 18, and the semicircle bulb of its termination inserts in the ball screw screw thread.On handle body 1, also has handguard sleeve 16.

The operation principle of present embodiment is: as long as with promoting push button 13 before and after the finger, can by the lower end latch 12 of bulb, the bulb of its lower end orders about ball screw 11 rotations, thereby the gear drive by its front end drives worm screw 2 rotations, and then drive movable port 3 and move along guide groove, reach the purpose of regulating the spanner openings of sizes.When promoting push button, screw rod dust cover 18 backward rotation are sealed screw flight all the time, avoid dirt to fall into.Because the pitch ratio of worm screw 2 is bigger, therefore the speed that makes spanner 3 move is more faster than the rapid adjustable wrench of usually similar drive mechanism, and simultaneously because the helical pitch of ball screw is littler than the spanner of similar drive mechanism, therefore the distance that makes push button 13 front and back promote shortens, and feel is light and handy.In addition, owing to adopted the gear graduation processing between passive face gear and the active roller gear, not only make the spanner push-and-pull light, but also dwindled the thickness of handle 1 among Fig. 1.Especially transmission mechanism has been taked corresponding sealing measure respectively, and not only appearance is more carefully and neatly done attractive in appearance, and has effectively prevented pollution effect, and it is convenient fast to operate, no jam phenomenon.

The utility model is not limited to above embodiment.Its specification can have many variations as required, and for example the modulus of worm screw can be 5MM, 6MM, 8MM, 10MM; The pitch of ball screw can be 8MM, 10MM, 12MM, 14MM, 16MM; The modulus of conical gear and roller gear can be 0.4,0.5,0.8,1.0; The number of teeth of conical gear can: 14 teeth, 15 teeth, 17 teeth, 18 teeth, 22 teeth; The number of teeth of roller gear can be 12 teeth, 15 teeth, 16 teeth, 17 teeth; The centre-to-centre spacing of plane and ball screw can be 4 cun (3.5MM-4.0MM) on the cover plate, 6 cun (5MM-5.5MM), 8 cun (5.8MM-6.2MM), 10 cun (5.8MM-6.2MM), 12 cun (6.3MM-6.8MM), 15 cun (7.8MM-8.0MM), 16 cun (7.8MM-8.0MM), 18 cun (8.2MM-8.7MM); Or the like.These variations all drop on the protection domain of the utility model requirement.

Implement in addition to the implementation, the utility model can also have other modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1. packaged type adjustable wrench, the handle that comprises the fixing hook-shaped spanner of an end, in the guide groove of described handle and spanner junction worm screw is housed, the movable port that one side is shaped on wrom tooth is contained in the guide groove, form moving sets, and and worm engaging, be shaped on caulking groove along its length on the described handle, in the described caulking groove cover plate is housed, rotatable ball screw is housed on the described cover plate, the front end of described ball screw is connected with worm screw by gear drive, its improvements are: described ball screw is set with the tubulose dust cover outward, described tubulose dust cover is shaped on the fluting with the dislocation of ball screw screw thread, and the Origin And Destination of described fluting is the swing angle of 190 degree-290 degree, and insert in the screw thread of ball screw by the fluting on the tubulose dust cover lower end of described push button assembly.

2. according to the described packaged type adjustable wrench of claim 1, it is characterized in that: described gear drive is made of active roller gear that processes by powder metallurgy and the passive face gear engagement that forms by powder metallurgy or extrusion process.

3. according to claim 1 or 2 described packaged type adjustable wrench, it is characterized in that: the whole cover plate that processes by die casting or casting or forging and pressing with aluminium alloy or iron or stainless steel is housed in the described caulking groove, the front and back feet of described cover plate is equipped with rotatable ball screw, and the long waist shaped front and back that the top band hexagonal of slip is housed in the described cover plate chute have the anti-skidding push button of circular arc non slip surface.

4 according to the described packaged type adjustable wrench of claim 1, it is characterized in that: the lower end of described worm screw, and it is stifled that the dustproof oil storage screw of axial locking is housed on the handle, and a stop screw that is used for eliminating the worm screw axial float is equipped with on the top of described worm screw on the handle.

5. according to the described packaged type adjustable wrench of claim 3, it is characterized in that: one of described feet has stopper slot, and the correspondence position of described ball screw has draw-in groove, wherein clamps C shape card or jump ring.

6. according to the described packaged type adjustable wrench of claim 1, it is characterized in that: the gear of described gear drive is equipped with the gear dust cover that profile matches with it outward.

7. according to claim 1 or 2 described packaged type adjustable wrench, it is characterized in that: the latch that the lower end is a bulb is housed in the mider hole of described push button, and described bulb inserts in the screw thread of described ball screw.

8. according to claim 1 or 2 described packaged type adjustable wrench, it is characterized in that: the centre-to-centre spacing of plane and screw rod can be 4 cun 3.5mm-4.0mm on the described cover plate, 6 cun 5mm-5.5mm, 8 cun 5.8mm-6.2mm, 10 cun 5.8mm-6.2mm, 12 cun 6.3mm-6.8mm, 15 cun 7.8mm-8.0mm, 16 cun 7.8mm-8.0mm, 18 cun 8.2mm-8.7mm.