CN203266509U

CN203266509U - Polygonal screw wrench provided with adjustable clamp feet

Info

Publication number: CN203266509U
Application number: CN 201320147293
Authority: CN
Inventors: 陆兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-28
Filing date: 2013-03-28
Publication date: 2013-11-06
Anticipated expiration: 2023-03-28

Abstract

The utility model discloses a polygonal screw wrench provided with adjustable clamp feet. The multi-angle screw wrench comprises a handle, a wrench body, a front clamp foot and a rear clamp foot, wherein lower half parts of the front clamp foot and the rear clamp foot are semi-cylindrical and form a clamping surface towards inner surfaces; a triangular groove meshed with a screw cap is formed in the clamping surface; the top end of the front clamp foot is fixed at the front end of the wrench body; a regulation sliding chute is formed in the wrench body; a square sliding block which can be embedded into the regulation sliding chute is arranged at the top end of the upper half part of the rear clamp foot, and the rear clamp foot can move in the regulation sliding chute through the sliding block; a regulating lever is arranged on the side surface of the sliding block; and a regulator is arranged on the handle. The polygonal screw wrench provided with the adjustable clamp feet is convenient to mount, does not need to use a set of wrench tools, and saves manpower and material resources.

Description

The adjustable polygonal screw wrench of pinch

Technical field

The utility model relates to mechanical manufacturing field, relates to specifically the adjustable polygonal screw wrench of a kind of pinch that uses when install machinery equipment.

Background technology

Machinery equipment remove and install process, often want the dismounting screw, in this case, need to use spanner.Because the diameter of the screw that uses is different, therefore need to use the spanner of different bores.For convenience's sake, people often adopt monkey wrench to replace using a string wrench.

Chinese invention patent application numbers 200810139821.8 discloses a kind of monkey wrench, comprise the regular jaw of wrench body front end and the moving jaw that matches, the moving jaw lower shaft is to the mobile post of one with it is set, mobile post is inlaid in the sliding tray and the slide rail adjacent with sliding tray of regular jaw, wherein the inner surface of the sliding tray adjacent with slide rail is the plane, and is corresponding with the shape on the outer surface of the mobile post of this Surface Contact and this plane.

But as known in the art, this spanner can only be used in the situation that screw nut is outstanding plane, when nut is mounted in depression on machine surface, just this monkey wrench can't use.And a lot of machinery equipments are for security and the reason such as attractive in appearance, and the situation that nut is under the plane is very common.The workman tends to adopt the torticollis sleeve in this case, and obviously, this needs again with upper complete instrument, still can be absorbed in the condition of inconvenience.

The utility model content

The utility model has namely solved tool set and has carried inconvenient problem by providing a kind of novel pinch adjustable polygonal screw wrench, and the monkey wrench that has solved again prior art uses the problem of limitation.

the adjustable polygonal screw wrench of pinch of the present utility model comprises handle, wrench body, front clamping foot and rear pinch, the latter half of front clamping foot and rear pinch is semi-cylindrical and forms clamping face to inner surface, have the triangle groove on clamping face, the front clamping foot top is fixed on the wrench body front end, have the adjustment chute on wrench body, rear pinch has on the first half top and move in can being embedded in the square slider of adjusting chute and can adjusting chute by slide block, the slide block side is provided with adjusting lever, handle is provided with adjuster, adjuster is included in the elongated hole of opening on handle, be located at the tusk on the elongated hole inwall, the adjusting lever end is connected with two elastic arms, these two elastic arms are from the junction terminad toward interior receipts and have endways outside outstanding, described outstanding can the cooperation with the tusk on the elongated hole inwall, retainer is separately arranged, retainer stretches out forward a bossed strip of front end tool and is stuck between two elastic arms.During use, moving slider is adjusted to suitable position with the front and back pinch, make the nut of the polygonal screw of engagement on clamping face or the drift angle of nut, to be screwed on screw rod with the nut that screw rod is used in conjunction with and tighten, rear pinch is fixed on wrench body, and pull handle and get final product the turn of the screw.At this moment, retainer is pulled back, and the projection of the strip front end that retainer stretches out is forward outwards opened elastic arm, and the outside outstanding and tusk on the elongated hole inwall of elastic arm end coordinates, thereby rear pinch is fixed, when namely avoiding the turn of the screw after pinch slide backward.

Often relate to the dismounting of special-shaped screw in the dismounting of machinery equipment, such as 4 jiaos, 5 jiaos, 6 jiaos, 7 jiaos of screws etc., therefore when screw has the odd number angle, should have the triangle groove on one in the clamping face of the clamping face of front clamping foot and rear pinch, and when screw has the even number angle, should all have the triangle groove on the clamping face of the clamping face of front clamping foot and rear pinch.For make the triangle groove better with the engagement of the angle of nut, two face angulations of triangle groove are preferably set according to the number at the angle of nut.For example, when being used for pentagonal screw, the angle between two faces of triangle groove is 110 degree.And when being used for hex(agonal)screw, the angle between two faces of triangle groove is 120 degree.Certainly, these angles also can be used for the screw of other shapes, and for example the pinch of 110 degree also can be used for 3 jiaos and 7 jiaos of screws, but optimum for 5 jiaos of screws.

Slider designs be square be to cause reducing operating efficiency in order to prevent that pinch rotates in the turn of the screw.In order to make pinch more stable, adjusting flange of inner edge design of chute, flange extends along the length direction of adjusting chute, is provided with groove in the relevant position of slide block, and when slide block was embedded in the adjustment chute, described groove just in time coordinated with described flange.In order to make slide block be detachable design with wrench body, flange preferably begins to extend from the front end of adjusting the chute side, extends to the position of the distance of a slide block length apart from the rear end, and slide block can install or remove from the adjustment runner rear end like this.This design more can limit the elevating movement of pinch, and what particularly become because be contained on equipment for a long time at the screw of being twisted itself is tighter, thereby when needing larger torsion just can screw down, this design is more useful.

Front clamping foot can be fixed on by any mode as known in the art the front end of wrench body, such as welding, be spirally connected etc.In a kind of preferred embodiment, front clamping foot is to be fixed on the front end of wrench body by rivet.The advantage of rivet is to connect simple and reliable, and intensity is high.

Beneficial effect: the adjustable polygonal screw wrench of pinch of the present utility model is easy to use, can use in multiple occasion, one-object-many-purposes, the sleeve that can substitute one group of different bore uses, and can overcome the defective that existing monkey wrench can not use on the screw that is installed on concave surface.

Description of drawings

Fig. 1 is the schematic diagram of the adjustable polygonal screw wrench of pinch of the present utility model.

Fig. 2 is the schematic diagram of an embodiment of the triangle groove on pinch of the present utility model.

Fig. 3 is the structural representation of the adjuster of the adjustable polygonal screw wrench of pinch of the present utility model.

In the drawings: 1 handle; 2 front clamping foots; 3 rear pinches; 4 wrench bodies; 5 adjust chute; The front end of 6 wrench bodies; 7 rivets; 8 slide blocks; 9 adjusting levers; 10 elongated holes; 11 elastic arms; 12 retainers; 13 strip; 14 tusks; 15 flanges; 16 triangle grooves.

The specific embodiment

With reference now to the adjustable polygonal screw wrench of description of drawings pinch of the present utility model.

Referring to Fig. 1, the adjustable polygonal screw wrench of pinch comprises handle 1, wrench body 4, front clamping foot 2 and rear pinch 3.the latter half of front clamping foot is semi-cylindrical and inwardly partly forms clamping face, the first half top is fixed on the front end 6 of wrench body by rivet 7, the latter half of rear pinch is semi-cylindrical and inwardly partly forms clamping face, have triangle groove 16 on clamping face, have on wrench body and adjust chute 5, rear pinch has on the first half top and move in can being embedded in the square slider 8 of adjusting chute and can adjusting chute by slide block, the slide block side is provided with adjusting lever 9, handle is provided with adjuster, as shown in Figure 3, adjuster is included in the elongated hole 10 of opening on handle, be located at the tusk 14 on the elongated hole inwall, the adjusting lever end is connected with two elastic arms 11, these two elastic arms are from the junction terminad toward interior receipts and have endways outside outstanding, described outstanding can the cooperation with the tusk on the elongated hole inwall, retainer 12 is separately arranged, retainer stretches out forward a bossed strip 13 of front end tool and is stuck between two elastic arms.During use, promote adjusting lever 9 with moving slider, the front and back pinch is adjusted to suitable position, make the nut of the polygonal screw of engagement on clamping face or the drift angle of nut, pull handle and get final product the turn of the screw.At this moment pull back retainer 12, the projection of strip 13 front ends that retainer stretches out is forward outwards opened elastic arm 11, and the outside tusk 14 outstanding and on the elongated hole inwall of elastic arm 11 ends coordinates, when avoiding the turn of the screw after pinch slide backward.As seen the inside of adjusting in the drawings chute has a flange 15, is designed with the groove that coordinates with this flange 15 on slide block 8, and when the effect that both coordinate can prevent the turn of the screw, pinch rocks.

Fig. 2 has provided an embodiment that has the triangle groove on the clamping face.As shown in the figure, have triangle groove 16 on front clamping foot 2 and rear pinch 3, so this embodiment is applicable to have the screw at even number angle, but in the situation that be furnished with a pinch with plane clamping face, also can be used for having the screw at odd number angle.Certainly, the optimum screw that is used for suitable angle number of specific angle, but reason for convenience, the screw with close angle number is all operable.For example the 120 triangle grooves of spending the angle except being used for 6 jiaos of screws, can also be used for 5 jiaos of screws and 7 jiaos of screws, and these several screws are also the most widely used on machinery equipment.

The above is described in detail embodiment of the present utility model by reference to the accompanying drawings, but the utility model is not limited to above-mentioned embodiment, in the ken that affiliated technical field those of ordinary skill possesses, can also make a variety of changes under the prerequisite that does not break away from the utility model aim.

Claims

1. adjustable polygonal screw wrench of pinch, comprise handle, wrench body, front clamping foot and rear pinch, the latter half of front clamping foot and rear pinch is semi-cylindrical and forms clamping face to inner surface, have the triangle groove of engagement nut on clamping face, the front clamping foot top is fixed on the wrench body front end, it is characterized in that, have the adjustment chute on wrench body, rear pinch has on the first half top and move in can being embedded in the square slider of adjusting chute and can adjusting chute by slide block, the slide block side is provided with adjusting lever, handle is provided with adjuster, adjuster is included in the elongated hole of opening on handle, be located at the tusk on the elongated hole inwall, the adjusting lever end is connected with two elastic arms, these two elastic arms are from the junction terminad toward interior receipts and have endways outside outstanding, described outstanding can the cooperation with the tusk on the elongated hole inwall, retainer is separately arranged, retainer stretches out forward a bossed strip of front end tool and is stuck between two elastic arms.

2. polygonal screw wrench as claimed in claim 1, is characterized in that, has the triangle groove on one in the clamping face of the clamping face of front clamping foot and rear pinch.

3. polygonal screw wrench as claimed in claim 1, is characterized in that, all has the triangle groove on the clamping face of the clamping face of front clamping foot and rear pinch.

4. polygonal screw wrench as claimed in claim 2, is characterized in that, the angle between two faces of described triangle groove is 110 degree.

5. polygonal screw wrench as claimed in claim 3, is characterized in that, the angle between two faces of described triangle groove is 120 degree.

6. polygonal screw wrench as described in any one in claim 1 to 5, is characterized in that, is provided with flange at the inner edge of adjusting chute, is provided with groove in the relevant position of slide block, and when slide block was embedded in the adjustment chute, described groove just in time coordinated with described flange.

7. polygonal screw wrench as claimed in claim 6, is characterized in that, described flange begins to extend from the front end of adjustment chute side, extends to the position of the distance of a slide block length apart from the rear end.

8. polygonal screw wrench as described in any one in claim 1 to 5, is characterized in that, front clamping foot is to be fixed on the front end of wrench body by rivet.