CN2475516Y

CN2475516Y - Wrench for preventing screw-jointed elements from separation

Info

Publication number: CN2475516Y
Application number: CN 01219083
Authority: CN
Inventors: 谢世揆
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-29
Filing date: 2001-04-29
Publication date: 2002-02-06
Anticipated expiration: 2011-04-29

Abstract

A wrench which can avoid detachment of bolt connection elements, comprises a shank, a head is arranged at one side of the shank, a polygonal bore trepanning is arranged in the head, showing up-down penetration shape, surrounding surface inside the bore trepanning is provided with a plurality of internal angles and edges, at least one groove is arranged on the surrounding surface inside the bore trepanning along the axial direction of the bore trepanning; at least one sliding limiter component which can set a limit and move upper and lower along the groove is arranged in the groove, and the sliding limiter is convexly exposed to the bore trepanning from the groove; the sliding limiter has an upper dead point and a lower dead point at the sliding journey inside the groove. The wrench is provided with a blocking bolt connection elements function, furthermore a function of preventing bolt connection elements from deviating from the wrench when the wrench connects the bolt connection elements with front and back face.

Description

Prevent the spanner of spiro connecting element disengaging

The utility model relates to a kind of spanner, especially a kind of spanner that prevents that spiro connecting element breaks away from.

Spanner is in order to turning spiro connecting elements such as nut or bolt, and at present, various spanners of the prior art all are to be socketed on spiro connecting element with the trepanning of opening shape, and therefore, spanner is easy to and spiro connecting element breaks away from, and causes operational inconvenience.In order to improve this disappearance, developed the spanner of multiple different position limiting structures, break away to prevent spanner and nut in use.

An existing spanner 10 as shown in Figure 1, a sheathed sliding sleeve 12 on its shank 11, when the lug 121 of sliding sleeve is displaced to trepanning 14 places of spanner, can the block nut, in case nut is deviate from trepanning 14.

In existing spanner 15 shown in Figure 2, be that the head 16 with spanner wears three pins 17, and make pin 17 protrude out with trepanning 18 in.When spanner 15 socket nuts, as shown in Figure 3, nut 19 is subjected to 17 blocks of pin, in case nut is deviate from.

Spanner 20 is to establish a protuberance that protrudes out toward in 23 in each interior angle 22 apical margin of polygonal trepanning 21 as shown in Figure 4, when spanner socket nut 24, as shown in Figure 5, comes the backstop nut with these protuberances 23.

As shown in Figure 6 be one to establish a caulking groove 27 at head 26 end faces of spanner 25; One ring body 28 is fixedly arranged in this caulking groove 27 with its lug 281, makes whereby that ring body 28 is protruding to be exposed to angle 291 within the trepanning 29, with the block nut.

As shown in Figure 7 be in the head 31 of spanner 30, to be embedded a ring body 32, this ring body 32 must convexedly stretch in the interior angle 331 of trepanning 33, with the block nut.

As shown in Figure 8 be to be a ratchet spanner 35, the ring portion 38 that this spanner 35 protrudes out toward in its ratchet 36 1 ends one-body molded one, then during spanner socket nut, can these ring portion 38 block nuts.

Yet, above-mentioned various position limiting structure all causes restriction to the operation of spanner, just, does not bring in the socket nut to be provided with the opening of placing restrictions on structure within the trepanning of these spanners, the end system that trepanning is provided with limit configuration forms a blind end, and can't bring in the socket nut with this sealing.Therefore, spanner can only come the socket nut with positive (being its open end), can't operate with reverse side (being its blind end) socket nut, produces and uses the inconvenience of going up.

The purpose of this utility model is to improve the deficiencies in the prior art, a kind of limit configuration that has is provided, prevent that spiro connecting element breaks away from, and allow spanner, and all have the spanner that prevents the spiro connecting element disengaging of placing restrictions on the nut effect in its front, during reverse side socket nut with front or reverse side socket nut.

For achieving the above object, the utility model is taked following design:

A kind of spanner that prevents that spiro connecting element breaks away from is that as nut or bolt, it includes in order to the polygonal spiro connecting element of socket:

One shank;

One head is located at this shank one end, and a polygonal trepanning is arranged in this head, is penetration state up and down, and in order to the socket spiro connecting element, the interior circumferential surface of this trepanning has most interior angles and most limit;

At least one groove is axially to be located within this trepanning on the circumferential surface along this trepanning;

At least one slippage sliding and position limitation spare, it can be along spacing being located in this groove in groove upper and lower displacement ground, so that it can not drop out this groove, and this sliding and position limitation spare and be exposed in this trepanning from this groove is protruding; Has last lower dead center in the slippage stroke of this sliding and position limitation spare in this groove.

By this, this spanner can pass through the arbitrary end socket of this trepanning spiro connecting element, and these sliding and position limitation spares can be inserted in spiro connecting element in trepanning and promote and be moved to a stop, and use and place restrictions on spiro connecting element.

Respectively this groove can be located at the interior angle place of this trepanning, also can be located on the limit of this trepanning.Respectively the top and bottom ends of this groove can respectively be established one and ends portion; This sliding and position limitation spare is subjected to these to end institute of portion block, as the stop of displacement when the groove intrinsic displacement.

Respectively the inner width of this groove is bigger, and the opening part width is less, makes each slippage that is located in this groove move locating part and can not drop out.

Respectively this sliding and position limitation spare can be the pearl body.

The spanner that the utility model provides makes it beyond the effect with block spiro connecting element by described structure, more allow spanner to use with positive and negative socket spiro connecting element, no matter and during with arbitrary socket, all have the effect that prevents that spiro connecting element breaks away from spanner.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the partial top view of a kind of spanner of the prior art

Fig. 2 is the stereogram of another kind of spanner in the prior art

Fig. 3 is the user mode schematic diagram of spanner shown in Figure 2

Fig. 4 is the stereogram of another spanner in the prior art

Fig. 5 is the user mode schematic diagram of spanner shown in Figure 4

Fig. 6 is the exploded perspective view of another spanner in the prior art

Fig. 7 is the exploded perspective view of another kind of spanner in the prior art

Fig. 8 is the stereogram of another spanner in the prior art

Fig. 9 is the stereogram of a kind of preferred embodiment of the present utility model

Figure 10 is the transverse cross-sectional view of Fig. 9

Figure 11 is the longitudinal profile schematic diagram of Fig. 9

Figure 13 is the generalized section of Figure 12

Figure 14 is identical with Figure 13, but has shown the generalized section of spanner with reverse side socket nut

Figure 15 is the top view of another preferred embodiment of the present utility model

Figure 16 is the top view of another preferred embodiment of the present utility model

Figure 17 is for showing the generalized section of Figure 16 with the position socket nut of not establishing sliding and position limitation spare

Figure 18 is the stereogram of a preferred embodiment more of the present utility model

Figure 19 is the stereogram of another preferred embodiment of the present utility model

Be depicted as first preferred embodiment of spanner provided by the utility model as Fig. 9,10 and 11, a head 44 and an openend 46 that this spanner 40 has a shank 42 and is connected in these shank 42 2 ends, this openend is not a creation point of the present utility model, does not give unnecessary details at this.

The trepanning 50 that this head 44 is provided with a hexagon and runs through up and down, circumferential surface has six interior angles and six limits in it, and wherein, respectively this interior angle is established a groove 52 along the axial system of trepanning, and groove is communicated with this trepanning.Respectively the cross section of this groove 52 as shown in figure 10, its inner width is big and opening part is less, and the top and bottom ends of each groove 52 respectively has one and end portion 54,54 ', as shown in figure 11.

Six sliding and position limitation spares 55 are steel ball in the present embodiment, but are not limited to steel ball.These sliding and position limitation spares 55 are to be located in respectively in these grooves 52, can be along grooves and slippage up and down, and a part of health of sliding and position limitation spare also convexedly stretches in the trepanning 50 from the opening of groove.Less because of the width of the opening part of groove, can not drop out outside the groove so sliding and position limitation spare 55 is subjected to limitation, and sliding and position limitation spare is in groove during slippage the stop when the set portion 54,54 ' of ending up and down of groove top and bottom ends is the slippage of sliding and position limitation spare.

When this spanner 40 uses, shown in Figure 12,13, when spanner is used in the front, with this trepanning 50 down when socket nut or bolt 60, because of the angle 62 of bolt is a interior angle corresponding to trepanning, so can touch these sliding and position limitation spares 55.Along with bolt 60 slips in trepanning 50 more, these sliding and position limitation spares 55 are promoted by bolt and along groove 52 toward top offsets, by the time these sliding and position limitation spares 55 are displaced to top dead centre and are subjected to only portion's 54 block bolts, prevent the disengaging of bolt and spanner.

Because these sliding and position limitation spares 55 can produce displacement state, therefore, during operation, also the trepanning of spanner can be overlapped connecting bolt with reverse side, as shown in figure 14, end portion 54 on this moment and tie up to down, end portion 54 ' down then last, these sliding and position limitation spares 55 are to be subjected to sliding and position limitation spare to place restrictions on.By this, when the utility model overlaps connecting bolt with reverse side, also has the effect that prevents that bolt and spanner break away from.

Be the top view of the another preferred embodiment of the utility model as shown in figure 15, the head 72 of this spanner 70 has a hexagon trepanning 74 equally, and this trepanning 74 only respectively is provided with a groove in two interior angles wherein, and all is not provided with in all interior angles; Two sliding and position limitation spares 75 then are located in respectively in this two groove, and slip.Present embodiment is during with positive and negative covers connecting bolt, also can produce as Figure 13,14 user mode.

Be another preferred embodiment as shown in figure 16, wherein the trepanning 82 of this spanner 80 is a dodecagon, be the hexagon socket position that concentric circles is provided with and have two groups, wherein: two interior angles of first group of socket position are all established a groove and are installed with a sliding and position limitation spare 85; And six interior angles 86 of second group of socket position all are not installed with sliding and position limitation spare.

When the trepanning 82 of this spanner 80 overlaps connecting bolt with the first group of socket position that is provided with sliding and position limitation spare 85, can produce as Figure 13 and the state of placing restrictions on bolt shown in Figure 14.When if spanner overlaps connecting bolt with this second group of socket position, as shown in figure 17, because this six interior angle 86 can't be placed restrictions on bolt 88, so bolt can upper and lower displacement not placed restrictions on by these sliding and position limitation spares 85 can in second group of socket position freely.

Be the stereogram of another preferred embodiment of the present utility model as shown in figure 18, wherein, this spanner 80 is provided with some grooves 86 in its limit 84; Some sliding and position limitation spares 88 are located in respectively in these grooves 86, can be along the groove upper and lower displacement.Same, these sliding and position limitation spares are to convexedly stretch in the trepanning, and can not drop out.During these spanner 80 cover connecting bolts, the limit of bolt is to be subjected to 88 blocks of sliding and position limitation spare.By this, during the cover connecting bolt of spanner positive and negative, all has the effect of placing restrictions on bolt.

Spanner shown in the various embodiments described above is fixed spanner, does not have an effect of ratchet.The structure of this creation also goes for various ratchet spanner.

Be another preferred embodiment of the utility model spanner as shown in figure 19, the spanner 90 shown in the figure is a ratchet spanner, a head 94 that has a shank 92 and be located at this shank one end; Wherein, installing one rotating ratchet 95 in this head; One polygonal trepanning 96 is located in this ratchet 95, for the cover connecting bolt.This ratchet can be subjected to a clip assembly (not shown) institute clip of being located in this head, to form ratchet effect.Be provided with some grooves 97 in these trepanning 96 inwalls, but the corresponding therein sliding and position limitation spare 98 that is provided with upper and lower displacement by this, when this ratchet spanner overlaps connecting bolt with positive and negative, also all has the effect that prevents that bolt breaks away from.

The structure of above-mentioned each embodiment of Fig. 9 to Figure 18 all can be installed in the various ratchet spanner.

Claims

1, a kind of spanner that prevents that spiro connecting element breaks away from, it includes:

One shank;

One head is located at described shank one end, and a polygonal trepanning is arranged in described head, is penetration state up and down, and the interior circumferential surface of described trepanning has most interior angles and most limit; It is characterized in that: also comprise:

At least one groove, it axially is located within the described trepanning on the circumferential surface along described trepanning;

At least one sliding and position limitation spare can be along spacing being located in this groove in described groove upper and lower displacement ground, and sliding and position limitation spare and be exposed in the described trepanning from described groove is protruding; Has last lower dead center in the slippage stroke of described sliding and position limitation spare in described groove.

2, the spanner that prevents that spiro connecting element breaks away from according to claim 1, it is characterized in that: each described groove is located at the interior angle place of described trepanning.

3, the spanner that prevents that spiro connecting element breaks away from according to claim 1, it is characterized in that: each described groove is located on the limit of described trepanning.

4, according to claim 1 or the 2 or 3 described spanners that prevent that spiro connecting element breaks away from, it is characterized in that: respectively establish a described stop at the top and bottom ends of each described groove.

5, according to claim 1 or the 2 or 3 described spanners that prevent that spiro connecting element breaks away from, it is characterized in that: the inner width of each described groove is bigger, and the opening part width is less.

6, according to claim 1 or the 2 or 3 described spanners that prevent that spiro connecting element breaks away from, it is characterized in that: each described sliding and position limitation spare is the pearl body.