CN1481973A - Spanner adapted for highly worn screw nut - Google Patents

Abstract

The present invention provides one kind of spanner suitable for high-wear screw nut. The spanner includes one sleeve end with one positioning hole and one opened end with one clamping opening of outwards buckling plane. It features that the positioning hole in the sleeve end consists of several arced surfaces, notched tips and notched arc surfaces, and the opened end has two raised surfaces and one notched surface. It can obtain excellent fixing effect.

Description

Spanner applicable to height wearing and tearing nut

Technical field

The present invention relates to a kind of spanner, particularly a kind of spanner applicable to height wearing and tearing nut.

Background technology

Well known, spanner is an indispensable instrument of when maintenance always in daily life, and now to the structural improvement of spanner, its main direction is to focus on to make when the fit nut rotates, have steadiness and be difficult for to produce and to come off, therefore as shown in Figure 1, generally commonly use the floor map of spanner A, it is to be provided with arc convex surface A1 and concave surface A2 in the fit face of spanner, make it the angle edge C1 of normal nut C to be held in the concave surface A2 (seeing also shown in Figure 2) between arc convex surface A1, but, then can can't hold obtuse angle line D1 because of arc convex surface A1 for wearing and tearing nut D, and produce the phenomenon (seeing also shown in Figure 3) of sliding tooth, promptly cause the inconvenience in the use.

And for example shown in Figure 4, it is the floor map of commonly using spanner B for another form, it is to be provided with a plurality of flank of tooth B1 in the fit face of spanner, to hold the angle edge C1 of normal nut C by flank of tooth B1, and can increase friction effect (as shown in Figure 5), but with regard to the stressed property of single-point, promptly can cause nut C to be subjected to a certain degree wearing and tearing, and after long-time use, even can undermine the structure of the flank of tooth and form illusory, and, contain and cause the phenomenon of skidding for leveling off to the wearing and tearing nut D (seeing also shown in Figure 6) of disc.

Moreover, the size of nut often produces certain error because of the difference of country origin regulation in making to go up as another, as nut 11/I6 inch made in Great Britain (then is I7MM with respect to metric system), if changing nut made in Great Britain into metric size then is I7.28MM, so promptly produce the error of about 0.28MM, and between arc convex surface A1 or flank of tooth B1, still can cause the situation of sliding tooth:

Therefore, how above-mentioned disappearance is forgone, be the place of the technical difficulties of this case inventor institute desire solution.

Summary of the invention

In view of this, this case inventor is with professional attainment and technical concept that itself was possessed, and the breakthrough improvement through repeatedly makes the present invention be born eventually.

Technical problem to be solved by this invention is, above-mentioned deficiency at prior art, and a kind of spanner applicable to height wearing and tearing nut is provided, this spanner can effectively prevent to push the diagonal angle edge and produce wear phenomenon, and can produce clamping effect closely for the wearing and tearing nut, with the steadiness on promote using.

Above-mentioned technical problem of the present invention is realized by following technical scheme.

A kind of spanner applicable to height wearing and tearing nut, its wrench body is to comprise: a socket end, be located at wrench body one side, it is to have a locating hole; One openend is located at the wrench body opposite side, has a folder mouth, and folder mouth correspondence outward is provided with buckle side, it is characterized in that:

The locating hole inner face of socket end is encircled by a plurality of cambered surface to establish, and by two cambered surfaces in the sharp face of corresponding the same side double team one depression, then form flat arc concave surface between sides adjacent two cambered surfaces;

A concave face is established in inwardly then being provided with by the two protruding face folders that support of this openend.

Except that above-mentioned essential features, in specific implementation process, also can replenish following technology contents:

Depression point face between the socket end cambered surface is to be provided with flange.

In the concave face of openend, establish a flange.

Above-mentioned technical problem of the present invention also can be realized by following another technical scheme.A kind of spanner applicable to height wearing and tearing nut, it mainly is to insert and put a convergence part in the wrench body front end, and it is one pullover that this convergence part one side is convexly equipped with, and this is pullover to combine with a union body; It is characterized in that:

The locating hole inner face of this union body is encircled by a plurality of cambered surface to establish, and by two cambered surfaces in the sharp face of respective side double team one depression, opposite side then respectively forms flat arc concave surface.

This another technical scheme, in specific implementation process, also can replenish following technology contents: the depression point face between the union body intrados is provided with flange.

The present invention mainly is that the locating hole inner face in the socket end of wrench body is encircled by a plurality of cambered surface and establishes, and by two cambered surfaces in the sharp face of respective side double team one depression, opposite side then respectively forms flat arc concave surface, use and reach stress dispersion purpose, produce wear phenomenon and can effectively prevent to push the diagonal angle edge, and can produce clamping effect closely for the wearing and tearing nut, to promote in the steadiness that uses.

The present invention in openend then in folder mouth outward correspondence be provided with buckle side, then form by the two protruding face folders that support to the inner and establish a concave face, to obtain preferable firm effect.

The invention has the advantages that:

1, applicable to the nut of various different sizes.

2, the stress that is produced in the time of can effectively disperseing to use is concentrated.

3, firm effect is good.

4, has preferable service efficiency.

5, tool convenience.

6, tool practicality.

7, tool industrial utilization.

Be convenient and understand content of the present invention, and the effect that can reach, conjunction with figs. is enumerated a specific embodiment now, introduction is described as follows in detail:

Description of drawings

Fig. 1 is a plane of commonly using general spanner.

Fig. 2 commonly uses the start floor map that general spanner is implemented on normal nut.

Fig. 3 commonly uses the start floor map that general spanner is implemented on the wearing and tearing nut.

Fig. 4 is the plane that another kind is commonly used spanner.

Fig. 5 is that another kind is commonly used the start floor map that spanner is implemented on normal nut.

Fig. 6 is that another kind is commonly used the start floor map that spanner is implemented on the wearing and tearing nut.

Fig. 7 is a stereogram of the present invention.

Fig. 8 is the start floor map that the present invention is used in normal nut.

Fig. 9 is the start floor map that the present invention is used in the wearing and tearing nut.

Figure 10 is the constitutional diagram that the present invention further implements with the changeable type sleeve.

Figure 11 is the stereogram of another embodiment of the present invention.

Figure 12 is the start floor map that another embodiment of the present invention is used in normal nut.

Figure 13 is the start floor map that another embodiment of the present invention is used in the wearing and tearing nut.

Figure 14 is the constitutional diagram that another embodiment of the present invention is further implemented with the changeable type sleeve.

The specific embodiment

The present invention provides a kind of spanner structure improvement (seeing also shown in Figure 7) applicable to the wearing and tearing nut, it comprises that mainly a wrench body 1 both sides form socket end 2 and openend 3, wherein locating hole 24 inner faces of this socket end 2 are encircled by a plurality of cambered surface 21 to establish, and by two cambered surfaces 21 in the sharp face 23 of respective side double team one depression, opposite side then respectively forms flat arc concave surface 22; This openend 3 then in folder mouth outward correspondence be provided with buckle side 31, then form by two protruding face 33 folders that support to the inner and establish a concave face 32;

See also Fig. 8, be that the present invention operates the situation that is implemented on normal nut C, when wherein the socket end 2 of this wrench body 1 being sleeved on normal nut C, plane C2 that can will this normal nut C supports and treats in 22 of cambered surface 21 and flat arc concave surfaces, this openend 3 then by protruding to the plane C2 of the normal nut C of face 33 clampings rotation; And be directed in the manufacturing size that produces and dwindle the nut (as: change nut made in Great Britain into metric size and then be the error of about 0.28MM that 17.28MM produces) of error, then its angle edge C1 can be held in 23 in the depression point face of socket end, or the openend 3 protruding concave faces 32 that support 33 in face, use and reach stress and disperse purpose, produce wear phenomenon and can effectively prevent to push diagonal angle edge C1.

Please consult Fig. 9 again, when wherein this socket end 2 and openend 3 being operated in wearing and tearing nut D, can support its obtuse angle edge D1 in flat arc concave surface 22 and the sharp face 23 of depression by cambered surface 21, or its obtuse angle edge D1 is supported by the protruding face 33 that supports, it being produced the effect of tight clamping, and on using, has steadiness.

(as shown in figure 11) again, be another embodiment of the present invention, wherein be in the concave face 32 of the depression of 21 of socket end 2 cambered surfaces point face 23 and openend 3, to establish a flange 7, make when being implemented on normal nut C (seeing also shown in Figure 12) or wearing and tearing nut D (seeing also shown in Figure 13), can increase the effect of tight clamping.

Moreover (please consulting Figure 10 and shown in Figure 14 simultaneously), socket end 2 of the present invention also may be implemented in replaceable pullover type spanner 4, and it is to insert and put a convergence part 5 in wrench body 1 front end, and these convergence part 5 one sides are convexly equipped with one pullover 51, make it to combine, and have more practical and convenient property with union body 6.

In sum, the present invention has met the application important document of patent of invention really, files an application in accordance with the law.

But the above only is of the present invention one preferable possible embodiments, non-so promptly arrest limit claim of the present invention, so equivalent structure that uses specification of the present invention and diagramatic content to do such as, directly or indirectly apply to other correlative technology field person, all in like manner all ought to be contained in the scope of spiritual category of the present invention, and close and give Chen Ming.

Claims (5)

1, a kind of spanner applicable to height wearing and tearing nut, its wrench body is to comprise: a socket end, be located at wrench body one side, it is to have a locating hole; One openend is located at the wrench body opposite side, has a folder mouth, and folder mouth correspondence outward is provided with buckle side, it is characterized in that:

The locating hole inner face of socket end is encircled by a plurality of cambered surface to establish, and by two cambered surfaces in the sharp face of corresponding the same side double team one depression, then form flat arc concave surface between sides adjacent two cambered surfaces;

A concave face is established in inwardly then being provided with by the two protruding face folders that support of this openend.

2, the spanner applicable to height wearing and tearing nut according to claim 1 is characterized in that: the depression point face between the socket end cambered surface is to be provided with flange.

3, the spanner applicable to height wearing and tearing nut according to claim 1 is characterized in that: establish a flange in the concave face of openend.

4, a kind of spanner applicable to height wearing and tearing nut, it mainly is to insert and put a convergence part in the wrench body front end, and it is one pullover that this convergence part one side is convexly equipped with, and this is pullover to combine with a union body; It is characterized in that:

The locating hole inner face of this union body is encircled by a plurality of cambered surface to establish, and by two cambered surfaces in the sharp face of respective side double team one depression, opposite side then respectively forms flat arc concave surface.

5, the spanner applicable to height wearing and tearing nut according to claim 4 is characterized in that: the depression point face between the union body intrados is provided with flange.

Images