CN1065821A

CN1065821A - Monkey wrench

Info

Publication number: CN1065821A
Application number: CN92102657.9A
Authority: CN
Inventors: 伊安·奥斯汀·哈里森
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-04-15
Filing date: 1992-04-15
Publication date: 1992-11-04
Anticipated expiration: 2007-04-15
Also published as: AU659147B2; EP0580680A1; DE69220934D1; WO1992018288A1; ES2106861T3; CN1034000C; EP0580680B1; AU1641792A; DE69220934T2; ATE155383T1; JPH06509029A

Abstract

The present invention proposes a kind of monkey wrench, wherein moving jaw is provided with first group of saw shape tooth, a lock piece that is provided with second group of saw shape tooth then is contained in the body of spanner movably, and between a lock position and a released position, move, in the time of on the lock position, second group of saw shape tooth and first group of saw shape tooth are meshed, moving jaw is locked on the operating position, and on the released position time, second group of saw shape tooth and first group of saw shape tooth break away from, and the motion of moving jaw can be adjusted; Wherein releasable locking system is provided with for lock piece is locked on the lock position reliably.

Description

Monkey wrench

The present invention relates to a kind of monkey wrench.

Monkey wrench is well-known, and this spanner has one and is fixed to a jaw of spanner on the handgrip, with spanner second jaw of can relative first jaw adjusting by the screw device that is configured on the handgrip.

The adjustment work of this spanner is very time-consuming, and the loosening or gap between screw mechanism and the monkey wrench jaw is inevitably, this means that monkey wrench seldom accomplishes by the mode of back-up wrench each face of hex nut to be done effectively to engage.

The objective of the invention is to, propose a kind of monkey wrench that these shortcomings are alleviated to some extent.

Therefore, the present invention proposes a kind of monkey wrench with a regular jaw and a moving jaw, this regular jaw is to be contained on the body or handgrip of spanner, or and the body or the handgrip of spanner be arranged to an integral body, moving jaw then is to be arranged in the body of spanner or the handgrip to slide with respect to regular jaw; Wherein moving jaw is provided with first group of saw shape tooth, the lock piece that is provided with second group of saw shape tooth then is to be contained in movably on the body or handgrip of spanner, so that between a lock position and a released position, move, when the lock position, the second saw shape tooth engagement, the first saw shape tooth, so that this moving jaw is locked on the operating position, and when the released position, the second saw shape tooth breaks away from the first saw shape tooth, so that the motion of this moving jaw can be adjusted.

Releasable locking system is provided with for lock piece is locked on the described lock position reliably.

Preferably lock piece is contained on described body or the handgrip slidably, its moving direction is perpendicular to the direction of motion of moving jaw.

Preferably locking system comprises a pin that is contained in movably on body or the handgrip, so that can between a lock position and a released position, move, described pin has a cam surface that is suitable for the engagement of described lock piece, and, make pin push moving jaw to by the motion of this pin between its lock position and released position.

Preferably the pin with locking system is contained on described body or the handgrip slidably.

This pin can be rounded cross section, and this moment, cam surface was a conical section on pin surfaces.

This pin can be rectangular cross section, and this moment, cam surface was to be a tilting section on pin one side.

In another kind of structure was provided with, pin was to be contained in rotationally on body or the handgrip, and this moment, cam surface was a surface of charging into the pin periphery.

Preferably lock piece is elastically biased toward away from moving jaw by means of a spring.

Preferably make first group and second group saw shape tooth have pitch corresponding to the nut size increment that rotates by spanner.

A yardstick device preferably is set, so that can point out the location situation of spanner between regular jaw and moving jaw.

In order to help that above-mentioned and otherwise abundant understanding of the present invention only by being example with embodiment, is set forth now in conjunction with the accompanying drawings, wherein:

Fig. 1 is expressed as the partial cross section side view that comprises a kind of spanner of the present invention;

Fig. 2 represents an outside schematic diagram according to Fig. 1 spanner;

Fig. 3 represents a vertical view according to Fig. 1 spanner;

Fig. 4 is expressed as the view that comprises another kind of spanner of the present invention, is similar to Fig. 1;

The vertical view that Fig. 5 represents according to Fig. 4 spanner;

Fig. 6 represents a partial cross section figure according to line VI-VI of Fig. 4;

Fig. 7 is expressed as the view that comprises another spanner of the present invention, is similar to Fig. 1;

Fig. 8 represents a vertical view according to Fig. 7 spanner;

Fig. 9 represents a detail drawing according to Fig. 7 locking system;

Figure 10 represents a sectional view according to line XX-XX;

Figure 11 is expressed as the view that comprises another spanner of the present invention, is similar to Fig. 1;

Figure 12 represents a vertical view according to Figure 11 spanner;

Figure 13 represent according to the detail drawing of the lock piece of Figure 11 spanner and

Figure 14 represents a sectional view according to line X IV-X IV of Figure 13;

Spanner shown in Fig. 1 in the accompanying drawing, 2 and 3 comprises one to have and with it handgrip 10 of a back-up wrench jaw 11 of all-in-one-piece and one is set and is forming the monkey wrench jaw 12 that can freely slide on the wrench body of one with handle 10.This moving jaw 12 has a projection 13 that is " keyhole " shape, and this projection 13 can move in a groove that is respective shapes 14 that is arranged in the wrench body according to original mode commonly used, is adjacent to regular jaw 11.

A rear surface of moving jaw 12 is provided with first group of saw shape tooth 15, and this saw shape tooth 15 can be meshed by corresponding second group of saw shape tooth 16 that forms on lock piece 17.Lock piece 17 is to be contained in slidably in the

adaptive hole

18,18 in this hole is arranged in the body of spanner, so that can move in a direction perpendicular to moving jaw 12 directions of motion, this lock piece 17 is to move between the released position breaking away from of lock position being meshed at first group of saw shape tooth and second group saw shape tooth and first group of saw shape tooth and second group of saw shape tooth.As seen, when being on such lock position along with lock piece, moving jaw 12 be locked at securely with the selected suitable position of nut size on, and when being on such released position along with this lock piece, this moving jaw 12 just can freely be adjusted on the selected nut size.

Saw shape tooth

15 and 16 pitch mates naturally, preferably make its pitch by employed spanner selection corresponding to the nut size or the imperial sizing or the increment of metric size.Moving jaw 12 also can be provided with a tuning drive gear 19, and this pointer 19 moves (referring to Fig. 2) with respect to a scale that is arranged on spanner regular jaw or the body, so moving jaw can be arranged on certain given nut size in use.

Locking system is total marks in the body that piece number 21 is arranged on spanner, releasably nibbles the saw shape tooth 15 that is incorporated on the lock position with its saw shape tooth 16 and spanner moving jaw 12 with lock piece 17 and is meshed and blocks.In this embodiment, locking system 21 includes one and is contained in spanner 10 intrinsic pins 22 slidably, and this pin can move along a direction, and this direction is perpendicular to the direction of motion of lock piece 17, and is roughly parallel to the direction of motion of moving jaw 12.Pin 22 is provided with a cam surface with tapered section 23 form, and this conical section is arranged to and can be meshed with a projection 24 that forms at lock piece 17 rear portions.

Thereby as can be known, moving downward of pin 22 as shown in the figure carried out between a released position and a lock position, this will make this lock piece 17 move into its with lock position that moving jaw 12 is meshed on, and it is locked on that lock position.Cone 23 can form " self-locking " effect, acts on power appropriate on pin 22 tops locking moving jaw 12 securely thereby make, and this appropriate power can increase by rapping on top pin 22.Be provided with a shoulder 25 around the top of pin 22,25 of this shoulders are arranged to and can be engaged with a shoulder 26 that forms on wrench body, exceed the required distance of firm locking in the wrench body in case shotpin 22 pushes.Pin 22 tighten be connected on conical section 23 below be provided with a contraction section 27, form a groove, so that when on cone pin, moving, as shown in the figure, lock piece 17 is unclamped, and projection 24 then can be received in this groove, and making the moving jaw 12 that is provided with saw shape tooth break away from engagement can freely move.

Lock piece 17 can be contained in the body of spanner by a mating hole that is located on the side, and this side then covers with a cover plate 28 then as shown in Figure 2.

A limit screw 29 can be set on the body of spanner, and a respective grooves 30 engagements on this screw energy and the moving jaw 12 fall down to prevent that moving jaw is deviate from spanner fully when lock piece 17 unclamps.Limit screw 29 is engaged on the situation of groove 30, can take place at spanner adjusting range broad or when big, and this also helps torsion is delivered on the moving jaw from handgrip, thereby uses the stability that can increase spanner under the bigger situation of adjusting range.

Thereby as seen, a kind of monkey wrench that this embodiment proposes can be locked on the selected adjustment position securely with suitable with the size of a given nut, push pin 22 lock position on by simple measure this moment, can carry out along with being pressed by a suitable bat of hammer in case of necessity.In addition, for unclamping pin 22, can press by means of a suitable bat in case of necessity and be carried out in the bottom by a hammer, unclamp moving jaw this moment, and can be easy to adjust on the selected size.

One and moving jaw end part 17 by means of pin 22 and pin and be lockable, the effect of this monkey wrench is as back-up wrench, thereby the shortcoming of the existing monkey wrench of inquiring into is previously alleviated to some extent.

Fig. 4,5 and 6 expression another kinds comprise spanner of the present invention, this spanner and Fig. 1,2 roughly similar with the spanner shown in 3; Part has common structure or effect shown in part shown in the figure and Fig. 1,2 and 3.These parts all indicate identical piece number.

In being provided with of this embodiment, pin 22 is rectangular cross sections, and can slide in the groove of a respective cross-section of wrench body.The conical section 23 existing cam surfaces 40 by an inclination of previous embodiment substitute, and the recessed or contraction flow region 27 of previous embodiment is then substituted by a groove 41.

Be provided with a helical compression spring 42 in this embodiment, this stage clip can be arranged on the lock piece 17 a shoulder that is forming on the wrench body and one, effect between the pin 43 of adjacent lobes 24, thereby lock piece 17 is biased on its released position.

In other respects, Fig. 4,5 and 6 embodiment, by its working method fully similar in appearance to Fig. 1,2 and 3 embodiment.

Fig. 7,8,9 and 10 represents to comprise another spanner of the present invention, this spanner and Fig. 1,2 roughly similar with 3 spanner; Part among those figure is roughly similar with its structure of part or effect among Fig. 1,2 and 3, and these parts all indicate identical piece number.

The pin 22 that moves is vertically substituted by a rotating pin 50 in this embodiment.This rotating pin 50 is by means of original known and be axially fixed on the body of spanner at unshowned device on the figure, and this pin can rotate a little angle X by a handgrip 51.

Fig. 1,2 and 3 taper surface 23 are substituted by a

cam surface

52, and 52 of this cam surfaces are arranged in the groove of pin 50 circumferential surfaces, and this groove is meshed with projection 24, so that lock piece 17 and moving jaw 12 enter engagement.This cam surface 52 terminates in the groove 53 that is equivalent to the groove 27 among Fig. 1,2 and 3 embodiment.

Lock piece 17 breaks away from engagement by the bias voltage of a spring 54 and moving jaw 12, and its mode is similar in appearance to Fig. 4,5 and 6 embodiment.

In other respects, Fig. 7,8,9 with its working method of embodiment of 10 fully with Fig. 1,2 similar with 3 embodiment.

Figure 11,12,13 and 14 the expression another comprise spanner of the present invention, the part among the figure have with Fig. 1,2 and 3 in roughly analog structure and effect of part, these parts all indicate identical piece number.

In this embodiment, the slidably lock piece 17 of Fig. 1,2 and 3 embodiment is substituted by a rotatable locking spare 60, and this lock piece axially is fixed, and rotates in wrench body being used for.This lock piece 60 roughly is rounded cross section, and by means of a screw 61 be stuck on axially one of the handgrip body also in.This lock piece 60 can rotate a little angle X by means of a Bar end 62 in the body of spanner.

Lock piece 60 forms along its peripheral part, which is provided with second group of saw shape tooth 63, and it acts on the saw shape tooth 16 on the lock piece 17 among suitable Fig. 1.Contiguous saw shape tooth 63 along lock piece 60 peripheries is a recessed section or cutout segment 64.On the moving jaw 12 first group saw shape tooth 15 its shape make with lock piece 60 on second assembly saw shape tooth 63 form of inclusion just in time, the shape of therefore last these saw shape teeth just in time with the lock piece face of cylinder on set consistent.

In use, can lock piece 60 be forwarded on the lock position by handgrip 62, saw shape tooth 15 and be meshed for first group on second group of this lock position saw shape tooth 63 and moving jaw 12, moving jaw is locked on the appropriate location, and lock piece is when forwarding on the released position, make first group of saw shape tooth 15 on moving jaw 12 that the space can be arranged in this position cutout segment 64, thereby moving jaw can be adjusted on the new position.After this jaw was through adjustment, lock piece 60 was just return, so that second group of saw shape tooth 63 enters engagement again.

In other respects, Figure 11,12,13 with its mode of action of embodiment of 14 and Fig. 1,2 similar fully with 3.

Thereby as seen, the present invention proposes a kind of monkey wrench that can be locked at securely on the appropriate location in its each embodiment, can an adaptive given nut size, also provide the size of the method for adjustment of simple and convenient simultaneously with adaptive various nuts to spanner.

Claims

1, a kind of monkey wrench, this spanner has a regular jaw (11) and a moving jaw (12), this regular jaw is mounted on the body or handgrip (10) of spanner, or and the body of spanner or handgrip this be arranged to an integral body, moving jaw then is arranged to and can be slided on the body of spanner or handgrip with respect to regular jaw; Wherein this moving jaw (12) is provided with first group of saw shape tooth (15), with a lock piece (17), this lock piece is provided with second group of saw shape tooth (16) and is contained in movably in the body of spanner, can between a lock position and a released position, move, the above second group saw shape tooth and described first group of saw shape tooth are meshed in the lock position, so that this moving jaw (12) is locked on the operating position, on the released position, second group of saw shape tooth and described first group of saw shape tooth break away from, and the motion of moving jaw can be adjusted; Wherein releasable locking system is provided with for lock piece (17) is locked on the described lock position reliably.

According to the described a kind of monkey wrench of claim 1, it is characterized in that 2, described lock piece is to be contained in slidably on described body or the handgrip, can move that this direction is perpendicular to the direction of motion of moving jaw (12) along a direction.

3, according to claim 1 or 2 described a kind of monkey wrenches, it is characterized in that, described locking system (21) comprises a pin (22,50), this lock is contained in described body or the handgrip movably, can between a lock position and a released position, move, described pin has one and is suitable for the cam surface (23 that is meshed with described lock piece (17), 40,52), and make described lock piece to this pin the motion between its lock position and released position push moving jaw (12) to.

According to the described a kind of monkey wrench of claim 3, it is characterized in that 4, described lock piece (17) is provided with a projection (24), this projection is arranged to be meshed with described cam surface (23,40,52).

According to the described a kind of spanner of claim 4, it is characterized in that 5, described pin is provided with a groove (27,41,53), this groove then is arranged to the described projection of receivability (24), and this moment, described lock piece (17) and described lock (22,40,50) all be to be on its released position

According to the described a kind of monkey wrench of claim 3,4 or 5, it is characterized in that 6, described pin (22,40) is to be contained in slidably in described body or the handgrip.

7, according to the described a kind of monkey wrench of claim 6, it is characterized in that, the rounded cross section of described pin (22), described cam surface then is a conical section (23) of pin surfaces.

8, according to the described a kind of spanner of claim 6, it is characterized in that, the rectangular cross section of described pin (40), described cam surface then is the tilting section (40) on this pin one side.

According to the described a kind of spanner of claim 6,7 or 8, it is characterized in that 9, described pin (22,40) is provided with a backstop (25) that prevents locking system (21) over-tension.

According to the described a kind of spanner of claim 3,4 or 5, it is characterized in that 10, described pin (50) is to be contained in rotationally on described body or the handgrip.

According to the described a kind of monkey wrench of claim 10, it is characterized in that 11, described cam surface is a surface (52) that is cut into described pin (50) periphery.

According to the described a kind of monkey wrench of aforementioned any one claim, it is characterized in that 12, described lock piece (17) imposes fexible bias pressure away from described moving jaw by means of a spring (42).

According to the described a kind of monkey wrench of aforementioned any one claim, it is characterized in that 13, described first group of saw shape tooth (15) and second group of saw shape tooth (16) have the pitch corresponding to the increment that passes through spanner rotating nut size.

14, according to the described a kind of monkey wrench of aforementioned any one claim, it is characterized in that, on described regular jaw or moving jaw, be provided with a yardstick (20), on described moving jaw or regular jaw, then correspondingly be provided with a pointer (19), thus location that can indicating wrench.