CN2521001Y - Improved open spanner - Google Patents

Abstract

The utility model relates to an improved open end wrench, which substantially comprises a force application arm, wherein a supporting arm and a resisting force arm are respectively arranged on the two sides of a side outer open of the force application arm, the utility model is characterized in that an acting surface of the supporting arm is designed into three planes, the resisting force arm is correspondly equipped with three caulking grooves, one plane corresponds to one caulking groove and is suitable for a specification of screw and a nut hexagon head, the plane is flat pasted on one plane of the screw and the nut hexagon head. The caulking groove comprises a push surface of one plane which is capable of being flat pasted on the screw and the nut hexagon head, a deviation surface which is gradually removed is of an escaping clearance angle theta with a spicing plane of the screw and the nut hexagon head, thereby achieving that the plane of the supporting arm is engaged with the push surface of the caulking groove of the force application arm, the two surface clip the screw and the nut hexagon head to firmly apply a power and rotate, the deviation surface which is gradually removed is of the escaping clearance angle theta with the plane of the screw and the nut hexagon head, when the open end wrench is rotated, the deviation surface does never contact the screw and the nut hexagon head before the push surface, thereby ensuring that the force application is assuredly communicated, the spondylolisthesis does not occur, an angle avalanche phenomenon does not occur, and the utility model has practicality.

Description

Improved open-end wrench

Technical field

The utility model relates to a kind of spanner, particularly a kind of improved open-end wrench.

Background technology

Consult shown in Figure 1, be known open-end wrench, this open-end wrench is established three buckle grooves 20,21,22 by drag arm 10 places, and fasten other two planes 31,32 in screw rod, nut turret head one corner 30 and corner with buckle groove 20 and buckle groove 20 side-thrust faces 24, buckling surface 23, cooperate the circular arc limit 41 of support arm 40 to withstand screw rod, nut turret head subtend plane 33 again, and reach the purpose that interlock is adjusted screw rod, the rotation of nut turret head, so diagram open-end wrench support arm 40 sides are provided with circular arc limit 41, and drag arm 10 places establish three buckle grooves 20,21,22.

Consult shown in Figure 2, it is the embodiment schematic diagram of known open-end wrench, the opening of open-end wrench fastens screw rod, the nut turret head, Fig. 3 then is that screw rod is compeled on 41 tops, support arm 40 circular arc limits, the enlarged diagram at nut turret head place 3, this support arm 40 circular arc limit 41 and screw rods as shown in Figure 3, one plane of nut turret head is the line contact, but because of diagram is for the plane so only can see some contact, but the slippage of its line contact promptly can be along screw rod, corner 30 arc surfaces 301 of nut turret head break away from the top compels, Fig. 4 then is the buckle screw rod of the first buckle groove 20, the enlarged diagram at nut turret head place 4, and drag arm 10 its thrust face 24 and screw rods of Fig. 4, the contact of nut turret head also is the line contact, so slippage quite easily, promptly work as the contact wire of its thrust face 24 or the contact wire on support arm 40 circular arc limits 41 and be positioned at screw rod, in the time of on the arc surface 301 of nut turret head corner 30, its line contact is very easily by these arc surface 301 slippages, and make the application of force not have the effect or the screw rod of pruning, nut turret head corner 30, make screw rod, nut turret head corner 30 is damaged and can't be used, and is its shortcoming.

In addition, shown in Fig. 3,4, this buckling surface 23 touches the one plane 32 of screw rod, nut turret head prior to thrust face 24, so when producing slippage slightly on support arm 40 circular arc limits 41, make buckling surface 23 produce to shoulder the bar motion with thrust face 24 bands from screw rod, the nut turret head plane 31 of continuing, thrust face 24 should be pushed away revolve the power of screw rod, nut turret head can't pass on screw rod, nut turret head, and make spanner produce slip phenomenon, so the shortcoming of this kind spanner is very easily slippage and stings the corner 30 of decreasing screw rod, nut turret head, is its shortcoming.

This creator is engaged in open-end wrench and Related product manufacturing industry thereof for many years, knowing very well the manufacture method and the pluses and minuses thereof of its open-end wrench, is to be devoted to improve its shortcoming, and the phase makes open-end wrench more practical, via for many years effort research and repeatly for studying, create the utility model finally.

Summary of the invention

The utility model is that a kind of improved open-end wrench will be provided, and making its firm embedding be sandwiched in the rotation of screw rod, the nut turret head application of force with solution can slippage to reach not, do not collapse the technical problem of angle phenomenon.

It is such solving the problems of the technologies described above the technical scheme that is adopted:

A kind of improved open-end wrench, mainly comprise force arm, the outer opening both sides of this force arm side are respectively equipped with support arm and drag arm, it is characterized in that: this support arm acting surface is set as three planes, this drag arm correspondence is provided with three buckle grooves, the corresponding buckle groove in one plane forms corresponding a kind of screw rod, the folder of the nut turret head specification space of pulling, this plane must be developed in screw rod, one plane of nut turret head, this buckle groove includes one and can develop in screw rod, the thrust face on one plane of nut turret head, and and screw rod, the nut turret head continue the plane be escape clearance angle θ angle gradually shape away from quilt from face;

This support arm plane cooperates thrust face two planes of drag arm buckle groove to press from both sides the screw rod of pulling, the rotation of the nut turret head application of force, get and quite firmly it band is revolved, and be from face and screw rod, nut turret head plane escape clearance angle θ angle gradually shape away from, when open-end wrench rotates in the application of force, by will not being touched screw rod, nut turret head prior to thrust face, guarantee that the application of force passes on the effect of screw rod, nut turret head really from face.

Open-end wrench support arm acting surface of the present utility model is set as three planes, and drag arm correspondence is provided with three buckle grooves, the corresponding buckle groove in one plane is suitable for a kind of specification screw rod, nut turret head, and the plane must be developed in screw rod, nut turret head one plane, the buckle groove also includes one and can develop in the thrust face on screw rod, nut turret head one plane, the support arm plane cooperates the thrust face two planes folder of drag arm buckle groove pull screw rod, the rotation of the nut turret head application of force according to this, be able to quite firmly screw rod, nut hexagonal headband be revolved reach not can slippage effect; Simultaneously, each buckle groove of its open-end wrench also includes one and screw rod, the nut turret head continue the plane be escape clearance angle θ angle gradually shape away from quilt from face, according to this by from face and screw rod, nut turret head plane be escape clearance angle θ angle gradually shape away from, when open-end wrench rotates in the application of force, will not be touched screw rod prior to thrust face from face, the nut turret head, guarantee certain reception and registration screw rod of the application of force, the effect of nut turret head makes its firm embedding be sandwiched in screw rod thereby solved, nut turret head application of force rotation can slippage to reach not, do not collapse the technical problem of angle phenomenon.

The utility model is simple in structure, be a kind of can slippage and firm drive screw, the improved open-end wrench of nut turret head, it is to establish its three plane in open-end wrench open side support arm acting surface, and establish three buckle grooves in open side drag arm corresponding flat, the corresponding buckle groove in one plane is suitable for the buckle transmission and adjusts a kind of specification screw rod, the nut turret head, and the plane must be developed in screw rod, nut turret head one plane, the buckle groove also includes one and can develop in screw rod, the thrust face on nut turret head one plane, and and screw rod, the nut turret head continue the plane be escape clearance angle θ angle gradually shape away from quilt from face, and thrust face two planes that can reach support arm plane cooperation drag arm buckle groove press from both sides the screw rod of pulling, the rotation of the nut turret head application of force, get quite firmly with screw rod, nut hexagonal headband revolves, and quilt is from face and screw rod, nut turret head plane be escape clearance angle θ angle gradually shape away from, when open-end wrench rotates in the application of force, will not be touched screw rod prior to thrust face from face, the nut turret head, make the effect that the open-end wrench tool application of force can slippage, and the tool practicality.

Description of drawings

Fig. 1 is the part floor map of known open-end wrench;

Fig. 2 is the embodiment schematic diagram of known open-end wrench;

Fig. 3 is the support arm side application point enlarged diagram of known open-end wrench;

Fig. 4 is the drag arm side buckle groove enlarged diagram of known open-end wrench;

Fig. 5 is the part floor map of architecture advances of the present utility model;

Fig. 6 is the embodiment schematic diagram of architecture advances of the present utility model;

Fig. 7 is the support arm side action plane enlarged diagram of architecture advances of the present utility model;

Fig. 8 is the drag arm side buckle groove enlarged diagram of architecture advances of the present utility model.

The specific embodiment

See also Fig. 5, shown in 8, the utility model mainly is that support arm 50 front ends in open-end wrench are provided with corresponding drag arm 60 sides three buckle grooves 70,71,72 three planes 51,52,53, each plane 51 according to this, 52,53 cooperate one buckle groove 70,71,72 are able to a kind of specification screw rod, the nut turret head carries out buckle and adjusts turn, and then interlock screw rod, the turn of nut turret head, it removes and is provided with three planes 51 in support arm 50 sides, 52, outside 53, be that more each buckle groove 70 of drag arm 60 sides or 71 or 72 establishes tool and develop in screw rod, the thrust face 61 on nut turret head one plane 31, and and screw rod, nut turret head plane 32 is some quilts of clearance angle θ of escaping from face 62, thrust face 61 and formed a buckle groove 70 or 71 or 72 from 62 in face is to constitute an open-end wrench that is applicable to three kinds of specifications.

Consult shown in Figure 6, be suitable for the minimum gauge screw rod of this open-end wrench, the width of nut turret head is W1, be suitable for time big specification screw rod of this open-end wrench, the width of nut turret head is W2, be suitable for the maximum specification screw rod of this open-end wrench, the width of nut turret head is W3, and the thrust face 61 extension line widths of support arm 50 planes, 51 extension lines and the drag arm 60 sides first buckle groove 70 also are W1, the thrust face 61 extension line widths of support arm 50 planes, 52 extension lines and the drag arm 60 sides second buckle groove 71 also are W2, the thrust face 61 extension line widths of support arm 50 planes, 53 extension lines and drag arm 60 sides the 3rd buckle groove 72 also are W3, and firmly screw rod is pressed from both sides in embedding, the nut turret head, and its support arm 50 each planes 51 or 52 or 53 and the thrust face 61 of each buckle groove 70 or 71 or 72 be to fit in screw rod with whole face, nut turret head corresponding flat 33 and 31, improve the shortcoming of above-mentioned known spanner with the easy slippage of line contact, and the quilt of its each buckle groove 70 or 71 or 72 is from face 62 and screw rod, nut turret head plane 32 tools are escaped the angle deviating (consulting shown in Figure 8) of clearance angle θ, when its support arm 50 first planes 51 produce slippage, by the screw rod of can not conflicting from face 62, nut turret head plane 32 allows thrust face 61 get firm push-jump screw rod, the turn of nut turret head; And as its buckling surface 23 of known open-end wrench of Fig. 2 conflict screw rod, nut turret head when support arm 40 slippages, buckling surface 23 produced immediately and shoulders the point action of rod principle and thrust face 24 is pushed up stick up and break away from screw rod, nut turret head applying plane 31 when support arm 40 continued slippages, producing slip phenomenon causes 30 damages of screw rod corner to collapse the angle phenomenon, it is the shortcoming of known spanner, and open-end wrench of the present utility model promptly can not produce slip phenomenon and causes screw rod corner 30 damage to collapse the angle phenomenon.

Consult Fig. 6, shown in 7, its open-end wrench support arm 50 sides are established first plane 51 in regular turn from inside to outside, second plane 52 and the 3rd plane 53, its first plane 51 cooperates corresponding buckle groove 70, plane 51 just can be developed in the minimum gauge screw rod, the angle side of keeping to the side on nut turret head one plane 33, and the thrust face 61 of corresponding buckle groove 70 just develops in screw rod with the plane, the angle side of keeping to the side on one plane, nut turret head diagonal angle 31, second plane 52 cooperates 71 of the second buckle grooves to be applicable to time big specification screw rod, the nut turret head, the 3rd plane 53 cooperates 72 of the 3rd buckle grooves to be applicable to the maximum specification screw rod, the nut turret head, and its plane 52 or 53 and buckle groove 71 or 72 thrust faces 61 develop screw rod, nut turret head mode all cooperates the mode of the first buckle groove 70 identical with first plane 51.

Consult Fig. 6 and shown in Figure 8, its thrust face 61 and quilt constitute a buckle groove 70 or 71 or 72 from 62 in face, but buckle groove 70 or 71 or 72 proper buckle screw rods, nut turret head one corner 30, thrust face 61 then just develops in screw rod, on the plane 31 of nut turret head corner 30 sides, by then and screw rod from face 62, nut turret head plane 32 be escape clearance angle θ angle gradually shape away from, make its open-end wrench at application of force rotating screw bolt, during the nut turret head, will not be touched screw rod prior to thrust face 61 from face 62, nut turret head one plane, guarantee can not contacted screw rod because of elder generation from face 62, nut turret head one plane 32 and with thrust face 61 top from screw rod, the nut turret head plane 31 of continuing, its above-mentioned action is applicable to first, two, three buckle grooves 70,71,72.

The foregoing description, only in order to illustrating the utility model, not from the scope of the utility model spirit, have the knack of this skill person with and the various distortion done, modify and application, all should be included in category of the present utility model.

In sum, the utility model is by the setting on open-end wrench support arm side three planes, and the thrust face of corresponding three buckle grooves is developed screw rod, nut turret head one plane, and the buckle groove by from face must with screw rod, the nut turret head continue the plane be escape clearance angle θ angle gradually from form, make its open-end wrench firmly be fastened screw rod, the nut turret head and the application of force are reversed and interlock, screw rod, the nut turret head does not have the slippage situation or collapses the horn shape condition and takes place, open-end wrench of the present utility model has its splendid advance in fact in like product, practicality, really possessed the utility application important document, so propose utility application in accordance with the law.

Claims (1)

1, a kind of improved open-end wrench, mainly comprise force arm, the outer opening both sides of this force arm side are respectively equipped with support arm and drag arm, it is characterized in that: this support arm acting surface is set as three planes, this drag arm correspondence is provided with three buckle grooves, the corresponding buckle groove in one plane forms corresponding a kind of screw rod, the folder of the nut turret head specification space of pulling, this plane must be developed in screw rod, one plane of nut turret head, this buckle groove include one and can develop in screw rod, the thrust face on one plane of nut turret head reaches and screw rod, the nut turret head continue the plane be escape clearance angle θ angle gradually shape away from quilt from face.

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