CN104084915A

CN104084915A - Ejecting type adjustable spanner

Info

Publication number: CN104084915A
Application number: CN201410342745.6A
Authority: CN
Inventors: 刘云香; 许彪; 肖文福; 王斌; 田华; 肖永江
Original assignee: Pingxiang University
Current assignee: Pingxiang University
Priority date: 2014-07-18
Filing date: 2014-07-18
Publication date: 2014-10-08
Anticipated expiration: 2034-07-18
Also published as: CN104084915B

Abstract

The invention discloses an ejecting type adjustable spanner which comprises a fixed jaw (3) and a movable jaw (1). The fixed jaw is provided with a T-shaped sliding groove (4), a lower groove (12) is formed in a connection block, the movable jaw is provided with a T-shaped sliding block (10) capable of sliding in the T-shaped sliding groove, the T-shaped sliding block is provided with an upper groove (15) corresponding to the lower groove, the connection block is provided with an ejecting plate (6), the upper end of the ejecting plate is provided with a curve section formed by connecting a left involute, a middle involute and a right involute in a smooth mode, the lower end of the ejecting plate is connected with a pressing rod (9) as a whole, a limiting blocking block (18) is arranged in one end of the upper groove, the ejecting plate is provided with a limiting groove hole (14), and a limiting pin (11) is disposed in the connection block. The spanner is simple and compact in structure, can be thinner, is convenient to manufacture, can be applied to nuts of different specifications in the largest adjusting range, improves work efficiency, improves practicality, meanwhile, is not prone to being damaged or stuck and improves durability, and the use effect is more close to that of a fixed spanner.

Description

Top stationary adjustable wrench

Technical field

The present invention relates to a kind of flight-line maintenance, dismounting and assembly tool, especially relate to top stationary adjustable wrench.

Background technology

As everyone knows, spanner is a kind ofly utilize lever principle to screw or unscrew the hand tools that has angle screw or nut.It mainly contains: adjustable wrench, and back-up wrench, double offset ring spanner, combination wrenches, hook spanner, box spanner, inner hexagon spanner, torque spanner, ratchet spanner etc., wherein the application of adjustable wrench is the most general.As its name suggests, it can regulate the openings of sizes of pulling mouth to adjustable wrench, A/F can be regulated within the scope of certain size, to adapt to the size of nut.Tradition adjustable wrench is with a long history, was invented 16 beginnings of the century, and use till today always by Dutchman.Adjustable wrench is mainly comprised of fixed wrench jaw, adjustable wrench jaw, adjusting Snail wheel and handle.During use, pull a mouthful clamping nut, fixed wrench jaw is upper, adjustable wrench jaw under, right hand handle, and near fixed wrench jaw, to facilitate thumb constantly to rotate worm gear, regulate the A/F size of pulling mouth to adapt to nut, thereby realize within the specific limits screwing or unscrewing of nut.

But in use there are some problems in this monkey wrench: the one, between the tooth bar in screw rod and adjustable wrench jaw, there is certain interval, during use, stressed can the generation of adjustable wrench jaw become flexible, between adjustable wrench jaw and fixed wrench jaw, distance size has variation, for compared with big nut, because the nut length of side is longer, the impact that screws or unscrew of the general nut of this change in size is little, and for compared with primary nut, because its length of side is shorter, during rotary spanner, spanner can skid, thereby this change in size will affect screwing of nut or unscrew, even can cause the angle of nut to damage, the 2nd, when the spanner long period is not used, if do not carry out reasonable maintaining, bolt rotary will be not too flexible, even occurs stuckly when corrosion is serious, causes adjustable wrench normally not use, three when with same spanner, between large primary nut, conversion is used, and need, with hand rotating screw bolt continually, use and seem cumbersome, the 4th, traditional adjustable wrench is subject to Snail wheel diameter to limit its thickness to be difficult to do thinlyyer, moreover traditional adjustable wrench adjustable wrench jaw beat amount is larger, easily cause the adjustable wrench jaw of adjustable wrench to damage.

Summary of the invention

For the existing problem of adjustable wrench in above-mentioned prior art, the invention provides a kind of screw rod that do not need and just can realize adjustable wrench jaw fast moving and fixedly secure, and practical, durability good, simple in structure, apply top easy and that adjustable wrench jaw beat amount is little stationary adjustable wrench.

Top of the present invention stationary universal screw wrench comprises fixed wrench jaw and adjustable wrench jaw, described fixed wrench jaw comprises handle and the contiguous block that integral body is made, in described fixed wrench jaw, be provided with T shape chute, in described contiguous block, be provided with low groove, in described adjustable wrench jaw, be provided with the T shape slide block that can slide in T shape chute, on described T shape slide block, be provided with the upper groove corresponding with low groove position, on described contiguous block, be provided with the solid plate in the top that can rotate in upper groove and low groove, solid plate upper end, top has the round and smooth curved section being connected to form of three sections of left, center, rights involute, solid plate lower end, top is connected with depression bar is whole, upper groove is provided with positive stop in one end, on the solid plate in top, be provided with spacing slotted eye, in described contiguous block, be provided with the spacer pin that runs through spacing slotted eye, when described depression bar turns left, adjustable wrench jaw can move in fixed wrench jaw, when depression bar turns right, adjustable wrench jaw can hold out against in fixed wrench jaw under the solid plate effect in top.

When the present invention uses, effect due to spacer pin, the depression bar low-angle that turns left, at this moment, solid plate upper end, top does not contact with the upper groove on T shape slide block, adjustable wrench jaw can be in fixed wrench jaw fast moving, adjustable wrench clamping screw imperial mother, when depression bar is turned right with handle parallel position, solid plate upper end, top withstands in the upper groove with T shape slide block, thus adjustable wrench jaw is held out against fixing, due to adjustable wrench jaw with fixed wrench jaw apart from not changing, thereby do not need adjusting just can the nut of same specification be screwed or be unscrewed, improved operating efficiency; The present invention also, owing to can making adjustable wrench jaw regulate fixingly in larger distance with fixed wrench jaw, thereby not only can be used for the nut that specification is larger and uses, and also the applicable nut compared with small dimension screws or unscrews, and has strengthened practicality; Simultaneously due to without threaded engagement, even if adjustable wrench long period use and maintenance not also there will not be stuck phenomenon, improved the durability of adjustable wrench.

The present invention compares with traditional adjustable wrench, not only simple and compact for structure, adjustable wrench thickness also can be done thinlyyer, easily manufactured, and on applicable different size nut, use within the scope of maximal regulated, operating efficiency improved, strengthened practicality, be not easy damage and stuck, durability is improved simultaneously, and the quality effect to nut during use more approaches back-up wrench.

Accompanying drawing explanation

Fig. 1 is main sectional structure schematic diagram of the present invention,

Fig. 2 is the A-A sectional structure enlarged diagram of Fig. 1,

Fig. 3 is the B-B sectional structure enlarged diagram of Fig. 1,

Fig. 4 is the C-C sectional structure enlarged diagram of Fig. 1,

Fig. 5 is the D-D sectional structure enlarged diagram of Fig. 1,

Fig. 6 is the solid plate contour structures enlarged diagram in top of the present invention,

Fig. 7 is 6 E-E sectional structure enlarged diagram,

Fig. 8 is the I-I structure for amplifying schematic diagram of Fig. 1.

In figure, 1, adjustable wrench jaw 2, net grid 3, fixed wrench jaw 4, T shape chute 5, bearing pin 6, the solid plate 7 in top, contiguous block 8, handle 9, depression bar 10, T shape slide block 11, spacer pin 12, low groove 13, left involute curve section 14, spacing slotted eye 15, upper groove 16, middle involute curve section 17, right involute curve section 18, positive stop.

The specific embodiment

At Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, in Fig. 7 and Fig. 8, Fig. 1 is adjustable wrench jaw and the structural representation of fixed wrench jaw when maximum, described top stationary universal screw wrench comprises fixed wrench jaw 3 and the adjustable wrench jaw 1 made from metal integral, on adjustable wrench jaw and fixed wrench jaw face, be provided with net grid 2(for increasing the nut frictional force surperficial with it), described fixed wrench jaw comprises handle 8 and the contiguous block 7 that integral body is made, in described fixed wrench jaw, be provided with T shape chute 4(T shape slide block coordinate with the sliding mechanical of the T shape chute rectangle part of fixed wrench jaw also can be designed to circle or oval sliding mechanical and coordinate), in described adjustable wrench jaw, be provided with the T shape slide block 10 that can slide in T shape chute, T shape slide block four right angle chamferings, between T shape slide block and T shape chute, keep less matched in clearance, gap length is to touch moving T shape slide block and can make T shape slide block slide and to be as the criterion at T shape chute with have gentle hands, in described contiguous block, be provided with low groove 12, on described T shape slide block, be provided with the upper groove corresponding with low groove position 15, upper and lower recess width is identical, the solid plate 6 in top that can rotate in upper groove and low groove for turning cylinder connects with bearing pin 5 on described contiguous block, solid plate upper end, top has the curved section that three sections of left, center, rights involute is smoothly connected composition, solid plate lower end, top is connected and makes with metal with depression bar 9 integral body, described curved section is by left involute curve section 13, middle involute curve section 16 and right involute curve section 17 form, left involute curve section curve rises suddenly, middle involute curve section curve is slow liter, right involute curve section circular arc is slow falling, the solid plate thickness in top is slightly less than low groove and upper groove, push up solid plate and upper, low groove leaves free gap between two sides, gap length should meet the solid plate in top can be upper, in low groove, freely rotate, described upper groove is provided with positive stop 18 in one end, positive stop height is not less than 1/2nd of upper groove height, positive stop effect is when moving to maximum, to carry out spacing to adjustable wrench jaw, to prevent from continuing to slide out T shape chute, cause adjustable wrench jaw to drop, on the solid plate in described top, be provided with spacing slotted eye 14, in described contiguous block, be provided with the spacer pin 11 that runs through spacing slotted eye, space size in described contiguous block should not hinder effective rotation of the solid plate in top, before adjustable wrench uses, (now the middle involute curve section on the solid plate in top does not contact with low groove, adjustable wrench jaw is removable, but the effect due to spacer pin, the depression bar angle that turns left is restricted, its rotational angle is less, middle involute curve section on the solid plate in top remains higher than positive stop, when adjustable wrench jaw and fixed wrench jaw are when maximum, due to stopping of positive stop, adjustable wrench jaw just can not skid off from fixed wrench jaw, when described depression bar turns left, separated with upper groove near middle involute curve section peak, adjustable wrench jaw can be upper mobile in fixed wrench jaw (T shape chute), when depression bar turns right, near middle involute curve section peak, start to contact with upper groove, groove top power is reached to maximum to peak, adjustable wrench jaw holds out against and is fixed in fixed wrench jaw (T shape chute) under the solid plate effect in top.The a small amount of that turns right again, now contact point, at the initiating terminal of right involute, although at this moment top power reduces an a small amount of than maximum, can obtain a stable state, even if now unclamp hand pressure handle, also can not flick left.In the time will taking out adjustable wrench jaw, extract spacer pin, make to push up solid plate and turn left that (now, involute curve section is lower than positive stop for wide-angle, positive stop is inoperative), the middle involute curve fragment position that makes to push up on solid plate reduces, and left involute right-hand member also decreases, left involute left end when starting in extreme lower position, though now slightly rise but still lower than positive stop, adjustable wrench jaw just can be taken out easily.Certainly in order to make not landing of adjustable wrench jaw, the stopping means of other structure also can be set, as the version of spacing slotted eye and spacer pin is set on T shape slide block.

Claims

1. top stationary universal screw wrench, it comprises fixed wrench jaw (3) and adjustable wrench jaw (1), described fixed wrench jaw comprises handle (8) and the contiguous block (7) that integral body is made, it is characterized in that: in described fixed wrench jaw, be provided with T shape chute (4), in described contiguous block, be provided with low groove (12), in described adjustable wrench jaw, be provided with the T shape slide block (10) that can slide in T shape chute, on described T shape slide block, be provided with the upper groove corresponding with low groove position (15), on described contiguous block, be provided with the solid plate (6) in the top that can rotate in upper groove and low groove, solid plate upper end, top has the round and smooth curved section being connected to form of three sections of left, center, rights involute, solid plate lower end, top is connected with depression bar (9) is whole, in upper groove one end, be provided with positive stop (18), on the solid plate in top, be provided with spacing slotted eye (14), in described contiguous block, be provided with the spacer pin (11) that runs through spacing slotted eye, when described depression bar turns left, adjustable wrench jaw can move in fixed wrench jaw, when depression bar turns right, adjustable wrench jaw can hold out against in fixed wrench jaw under the solid plate effect in top.