CN2445864Y

CN2445864Y - Device for preventing nut skid-falling from spanner

Info

Publication number: CN2445864Y
Application number: CN 00239056
Authority: CN
Inventors: 凌万权; 端木献忠
Original assignee: Profit Co ltd
Priority date: 2000-06-14
Filing date: 2000-06-14
Publication date: 2001-09-05
Anticipated expiration: 2010-06-14

Abstract

The utility model relates to a device for preventing nut skid-falling from a spanner, comprising a hollow box end which is provided with an inner surrounding surface, and the inner surrounding surface is provided with a first end and a second end, wherein, the surface of the first end is communicated along the inner surrounding surface, and the surface of the second end is integrally fixedly provided with a falling preventing device formed by a blocking edge to prevent a nut from skid-falling.

Description

Spanner prevent nut slippage device

What the utility model related to a kind of spanner, particularly spanner prevents nut slippage device.

The spanner of habit formula as shown in Figure 1, the flank of tooth of spanner inwall is that a cutter is worked into the end and runs through fully, so when wearing nut, as Fig. 2, Fig. 3 and shown in Figure 4, nut can be deviate from the inwall flank of tooth of spanner, can't be maintained fixed with nut or screw terminal, easily cause the edge abrasion of nut or screw terminal, when locking or dismounting, easily because of skidding off the not convenient property of increase work, even cause industrial injury, and nut or screw terminal can can't use because of excessive wear, in order to solve the problem of above-mentioned existence, someone is at preventing that screw cap-falling from designing " structure of spanner grip slipper " of No. the 351231st, the novel patent announcement in Taiwan, in rotation process, can break away from the nuts of being pulled in order to overcome the fixed ratchet wheel spanner, therefore this spanner utilizes a steel ball and catch respectively, be equipped in top on the fixed ratchet wheel spanner, to prevent that spanner breaks away from the bolt spiral shell of pulling, but the steel ball of this structure is telescopic, the pushing and pressing of the spring of inner Tibetan, thus the excessive steel ball of strength can the retraction hole in and ineffective, and with a catch left side, move right to control and whether will break away from nuts, but if the commentaries on classics that is rotated promptly can't utilize apart from mouthful thickness of pulling greater than spanner.

The distolateral grip slipper side of spanner is penetrated with some post holes, use and wear fixing for isometric cylinder, and the cylinder that it is fixed also protrudes in the grip slipper inwall and forms a flanged structure, makes spanner when long screw rod spiral shell is solid, the grip slipper screw head that is unlikely to slip away;

But this patent case, in processing and manufacturing, but do not have too high industry applications, because the head of double offset ring spanner is very little, its wall thickness of pulling head is quite limited, if on this limited wall thickness, wear a plurality of posts hole again, can destroy the structural strength of wall thickness itself greatly, pull the torque value that head can bear and significantly to reduce when pulling nut, directly have influence on the operating physical force of spanner when pulling.In addition, the processing that runs through the post hole equals to add the procedure of a boring, because of the inwall of Wrench head all very thin, so running through the processing in post hole is difficult to naturally, cylinder is fixed in the post hole, many again one linkage editors are so to sum up analyze the improving technology of this patent case again, yet original problem is not solved fully a plurality of production problems of having derived again.

No. the 360116th, the novel bulletin in Taiwan " the anti-detachment structural improvement two of many interior angles fixed ratchet wheel spanner " for another example, be behind the intact coarse-blank of spanner, take advantage of without before quenching, the spanner of lead angle is not imposed present count protrude circular arc, and this respectively protrudes each interior angle corner that circular arc is positioned at this spanner, to block each angle of nuts, can prevent that the nuts slippage from going out spanner.

This patent case only can backstop be lived the small part of nut angle end with the design of button type, and the effect of backstop nut is more uncertain, moreover also difficulty comparatively of processing.

No. the 363486th, the novel bulletin in Taiwan " structure of spanner grip slipper " and for example, the anchor ring sidewall relative position place of this spanner grip slipper inner edge, be drilled with two and relative decide the hole, use that slightly to be the block holder of Ω shape for a profile sheathed, and this block holder is a cylindrical body, and the sleeve column that its two ends are convexly equipped with is sheathed on deciding in the hole of grip slipper, makes its inner edge appropriate location in grip slipper form a flange, can make the nut that is placed in the grip slipper be resisted against this flange place, and can slippage;

The same structural strength of destroying wall thickness itself such as meeting greatly that exists of this patent case is pulled the torque value that head can bear and will significantly be reduced when pulling nut, directly have influence on the operating physical force of spanner when pulling, and problem such as increase procedure.

No. the 367918th, the novel bulletin in Taiwan " the anti-detachment structural improvement of many interior angles fixed ratchet wheel spanner appends one " for another example, be to form a spiral shell that caves in spanner grip slipper one openend inner edge to establish portion, establish the plate that leans of a ccontaining ring-type in the portion in this spiral shell, and a body that covers that is the dome shape screwed togather to spiral shell and establish portion, lean plate to fix this.

Also there are problems such as the processing and manufacturing program of spanner is complicated, that packaging efficiency is low equally in this patent case.

What the purpose of this utility model provided a kind of spanner prevents nut slippage device, and it not only can block the outward flange of screw terminal or nut, can prevent effectively that more screw terminal or nut from deviating from from the casket end of spanner.

What the utility model provided a kind of spanner prevents nut slippage device, and it is characterized in that: comprise the casket end of a hollow, this casket end has interior circumferential surface, and end of circumferential surface sets firmly an anti-drop device in this.

What the utility model provided a kind of spanner prevents nut slippage device, it is characterized in that: the casket end that comprises a hollow, this casket end has interior circumferential surface, should interior circumferential surface have first end and second end, first surface of kicking is that circumferential surface formation is connected in prolonging, and the surface of second end then one is installed with an anti-drop device.

Described spanner prevent nut slippage device, it is characterized in that: this casket end can be the casket end of Double ring spanner.

Described spanner prevent nut slippage device, it is characterized in that: this casket end can be the casket end of ratchet spanner.

Described spanner prevent nut slippage device, it is characterized in that: this casket end can be the casket end of penetration ratchet spanner.

Described spanner prevent nut slippage device, it is characterized in that: this casket end can be the casket end of commutation combination wrench.

Described spanner prevent nut slippage device, it is characterized in that: this casket end can be the casket end of commutation Double ring spanner.

Described spanner prevent nut slippage device, it is characterized in that: the interior circumferential surface of this casket end is made up of continuous crown.

Described spanner prevent nut slippage device, it is characterized in that: the shape of the interior circumferential surface of this casket end can be polygon.

Described spanner prevent nut slippage device, it is characterized in that: the shape of the interior circumferential surface of this casket end also can be polygon arc.

Described spanner prevent nut slippage device, it is characterized in that: this anti-drop device comprises a retaining edge, and the internal diameter of this retaining edge is less than the formed internal diameter of continuous crown of interior circumferential surface.

Can summarize with regard to the above and the utlity model has following advantage:

1, spanner of the present utility model prevent nut slippage device, it not only can block the outward flange of screw terminal or nut, can prevent effectively that more screw terminal or nut from deviating from, and can allow screw portion pass easily again, quite has practicality.

2, spanner of the present utility model prevents nut slippage device, be to be shaped in the casket end, but not additional processing, make this casket end only must a cutter can mold simultaneously in circumferential surface can form anti-drop device again, to not increasing any program in the processing and manufacturing fully or other elements being installed, the production efficiency height.

3, the nut slippage device that prevents of spanner of the present utility model is formed in one on the casket end, must not increase any part in the manufacture process, also needn't change correlated parts, can reach the requirement that prevents screw cap-falling, and increases the convenience in user's operation.

Understand and approval in order to have further effect of the present utility model, feature and purpose, lift a preferred embodiment now and cooperate be illustrated in after.

The explanation of accompanying drawing drawing:

Fig. 1 is the stereogram of known spanner casket end;

Fig. 2 is the stereogram of the spanner socket nut of Fig. 1;

Fig. 3 is the vertical view of Fig. 2;

Fig. 4 is the 4-4 direction cutaway view of Fig. 3;

Fig. 5 is a stereogram of the present utility model;

Fig. 6 is the reverse stereogram of back socket nut of Fig. 5;

Fig. 7 is the vertical view of Fig. 6;

Fig. 8 is the 8-8 direction cutaway view of Fig. 7;

Fig. 9 is that cancave cambered surface casket end of the present utility model is implemented illustration:

Figure 10 is that square casket end of the present utility model is implemented illustration;

Figure 11 is that hexagon casket end of the present utility model is implemented illustration;

Figure 12 is a hexagon casket end of the present utility model, and its interior angle has the enforcement illustration of concave arc guide lug;

Spanner of the present utility model prevent nut slippage device, please cooperate and consult shown in Figure 5ly, it comprises:

Be provided with the casket end 11 of a hollow at an end of spanner 10, these casket end 11 inwalls have one to be used for rotational fixture (bolt, nut) interior circumferential surface 12, should interior circumferential surface 12 be formed by continuous crown 121, wherein interior circumferential surface 12 has first end 13 (upper surface) and second end 14 (lower surface), the surface of first end 13 can allow that fixture passes in and out thus, the surface of second end 14 then is provided with an anti-drop device 20, in conjunction with reference to Fig. 6,7, shown in 8, this anti-drop device 20 comprises a retaining edge 21, the internal diameter of this retaining edge 21 is less than the continuous crown 121 formed internal diameters of interior circumferential surface 12, so can have stop and anti-slip function to fixture, wherein spanner 10 is provided with a control knob 15 and produces engagement with the outer circumferential surface of stirring a ratchet (indicate) and casket end 11, turns round 15 functions that can reach commutation by this control; This is a prior art, repeats no more.

The processing mode of this anti-drop device 20 is: during the continuous crown 121 of the interior circumferential surface 12 of the casket end 11 that runs through in processing, when cutter is machined to second end 14 by first end 13, cutter is reserved skim and is not penetrated, cutter is withdrawed from by first end 13 again, promptly form anti-drop device 20, so this anti-drop device 20 is to be shaped in casket end 11, but not additional processing forms, make this casket end 11 and only must a cutter can mold continuous crown 121 simultaneously and can process anti-drop device 20 again, to not increasing any program in the processing and manufacturing fully or other elements being installed.

Please consult shown in Figure 6 again, user mode for the casket end 11 sheathed fixtures of spanner 10, and second end 14 of circumferential surface 12 is last in the casket end 11, first end 13 under mode of operation, and cooperation Fig. 7 and Fig. 8, a sheathed nut 40 on the nut 30 wherein, and spanner 10 is when going to pull this nut 40, can be earlier be inserted in nut 40 outer rims by first end 13 of circumferential surface 12 in the casket end 11, the outer-hexagonal of nut 40 is meshed with continuous crown 121, the screw rod 31 of nut 30 can pass second end 14 easily, and this spanner 10 can be pulled nut 40, and first end 13 of spanner 10 mat casket ends 11 is inserted in and can't be deviate from by second end 14, nut 40 is blocked by the retaining edge 21 of anti-drop device 20, so spanner 10 is in the process of pulling nut 40, anti-drop device 20 can make the nut 40 can slippage, and can smoothly nut 40 be screwed or unscrew.

Please continue to consult shown in Figure 9, be another embodiment of the utility model.Wherein circumferential surface 51 is made up of continuous concavo-convex arc piece 52 in the casket end 50, and its first end also is a penetration, and second end then is provided with the retaining edge 21 of anti-drop device 20.

Please continue to consult shown in Figure 10, be another embodiment of the present utility model.Wherein circumferential surface 61 are rectangles that the plane 62 by cubic shape forms in the casket end 60, and its first end also is a penetration, and second end then is provided with the retaining edge 21 of anti-drop device 20, mainly is the fixture that vibrates square head nut or screw terminal in order to screw or to unscrew.

Please continue to consult shown in Figure 11, be another embodiment of the present utility model, circumferential surface 71 are hexagons that the plane 72 by the hexagonal shape forms in the casket end 70, its first end also is a penetration, second end then is provided with the retaining edge 21 of anti-drop device 20, mainly is the fixture of pulling turret head nut or screw terminal in order to screw or to unscrew.

Please continue to consult shown in Figure 12, be another embodiment of the present utility model, wherein circumferential surface 81 are hexagons that the plane 82 by the hexagonal shape forms in the casket end 80, and be provided with concave arc guide lug 83 in each interior angle place, its first end also is a penetration, second end then is provided with the retaining edge 21 of anti-drop device 20, mainly is in order to screw or to unscrew the fixture of hexagonal (hexagon)nut or screw terminal.

Claims

1, a kind of spanner prevent nut slippage device, it is characterized in that: comprise the casket end of a hollow, this casket end has interior circumferential surface, end of circumferential surface sets firmly an anti-drop device in this.

2, a kind of spanner prevents nut slippage device, it is characterized in that: the casket end that comprises a hollow, this casket end has interior circumferential surface, should interior circumferential surface have first end and second end, first surface of kicking is that circumferential surface formation is connected in prolonging, and the surface of second end then one is installed with an anti-drop device.

3, spanner as claimed in claim 1 or 2 prevent nut slippage device, it is characterized in that: the casket end that this casket end is a Double ring spanner.

4, spanner as claimed in claim 1 or 2 prevent nut slippage device, it is characterized in that: the casket end that this casket end is a ratchet spanner.

5, spanner as claimed in claim 1 or 2 prevent nut slippage device, it is characterized in that: the casket end that this casket end is the penetration ratchet spanner.

6, spanner as claimed in claim 1 or 2 prevent nut slippage device, it is characterized in that: this casket end is the casket end of commutation combination wrench.

7, spanner as claimed in claim 1 or 2 prevent nut slippage device, it is characterized in that: this casket end is the casket end of commutation Double ring spanner.

8, spanner as claimed in claim 1 or 2 prevent nut slippage device, it is characterized in that: the interior circumferential surface of this casket end is made up of continuous crown.

9, spanner as claimed in claim 1 or 2 prevent nut slippage device, it is characterized in that: the interior circumferential surface of this casket end be shaped as polygon.

10, spanner as claimed in claim 1 or 2 prevent nut slippage device, it is characterized in that: the interior circumferential surface of this casket end be shaped as polygon arc.

11, spanner as claimed in claim 1 or 2 prevent nut slippage device, it is characterized in that: this anti-drop device comprises a retaining edge, and the internal diameter of this retaining edge is less than the formed internal diameter of continuous crown of interior circumferential surface.