CN2199845Y

CN2199845Y - Improved adjustable spanner

Info

Publication number: CN2199845Y
Application number: CN 94205295
Authority: CN
Inventors: 章中兴
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-03-16
Filing date: 1994-03-16
Publication date: 1995-06-07
Anticipated expiration: 2004-03-16

Abstract

Disclosed is an improved adjustable spanner which comprises a handle part and a head which is of integral forming on one end of the handle part, wherein, the head is provided with a sheathing hole, a containing hole, and a penetrating hole, the containing hole and the sheathing hole are separated, and the penetrating hole which penetrates through the containing hole is communicated with the sheathing hole. The sheathing hole is provided with two opposite fixing clamping surfaces, and a rotating ring is contained in the containing hole. An adjusting screw bolt whose one end extends in the sheathing hole penetrates through the penetrating hole and the annular hole of the rotating ring, and the extending end is provided with a movable clamping surface which is matched with the fixing clamping surface for forming clamping space with three clamping surfaces. The annular hole of the rotating ring is provided with a screw thread which is engaged with the adjusting screw bolt. A positioning pin is fixedly arranged on the head and is embedded in an axially extending slot which is arranged on the bolt body of the adjusting screw bolt. When the rotating ring is rotated, the adjusting screw bolt can move on a line to adjust the position of the movable clamping surface.

Description

Improved adjustable spanner

The utility model is relevant with the spanner that is used for pulling hexagonal (hexagon)nut or bolt head, particularly about a kind of monkey wrench that can adjust its grasping part size very easily.

Commercially available monkey wrench (Adjustable Wrcnch) all is to utilize a fixing pincers tooth (Fixed Jaw) and an adjustable clamp tooth (Movable Jaw) to come the limit, two opposite sides of clamping hexagonal (hexagon)nut or bolt head at present; when exerting oneself suddenly, tend to take place the situation of slippage; moreover; this adjustable clamp tooth when pulling owing to be to bear torsion with respect to this fixing pincers tooth; therefore, regular meeting has the phenomenon of bursting apart to take place.

Therefore, the main purpose of the utility model provides a kind of monkey wrench of improvement, and it can the easy size of adjusting grasping part apace, to be suitable for the hex nut or the bolt head of different size.

The another purpose of the utility model then is to provide a kind of monkey wrench of improvement, and it is to come clamping hexagonal (hexagon)nut or bolt head with three to being referred to as clamping face, and the situation that does not therefore have slippage takes place.

For reaching aforementioned purpose, the improvement monkey wrench of the utility model includes a shank; One head, extend outward from one of this shank major axis end, this head include be parallel to each other on an end face and a lower surface, one register hole runs through this upper and lower end face, this register hole is provided with perpendicular to this upper and lower end and two relative fixed clamp faces away from one of this shank side, and the past direction in contrast to this shank of this two fixed clamp face system is close mutually and the two abstract elongated surfaces towards this direction is intersected with about 60 degree; One adjusts bolt axially is fixedly arranged on to straight-line displacement on this head, one end system stretches in this register hole, this inserting end is provided with the movable clamping face that can adjust the bolt displacement with this, on this activity clamping face system and this head, the lower surface is vertical and make its towards abstract elongated surfaces of and arranged on left and right sides respectively with about 60 degree and respectively this fixed clamp face or its abstract elongated surfaces are crossing; This head is provided with a containing hole on the position adjacent to this adjustment bolt straight-line displacement path, one swivel becket is placed in this containing hole and makes its part anchor ring exceed end face on this head, the annular distance of this swivel becket system is adjusted bolt-through and is provided with screw thread with this adjustment bolt bridle joint in the hole face, in order to when this swivel becket of turn, this adjustment bolt can be done axial straight-line displacement.

Below, lift a preferred embodiment now and cooperate and graphic the utility model is done further explanation, wherein:

Fig. 1 is the stereogram of the utility model one preferred embodiment;

Fig. 2 is the utility model one preferred embodiment cutaway view on the 2-2 direction in Fig. 1;

Fig. 3 is the utility model one preferred embodiment cutaway view on the 3-3 direction in Fig. 1;

Fig. 4 is the top view of the utility model one preferred embodiment;

Fig. 5 is that the utility model one preferred embodiment is in the top view of first kind of user mode;

Fig. 6 is that the utility model one preferred embodiment is in the top view of second kind of user mode.

Shown in each figure, the monkey wrench 10 of the utility model has the end that a long head 14 of pulling shank 12, one cuboids of shape is shaped in these shank 12 major axis, and the other end of this shank 12 is provided with a circular hole 16 for the usefulness of colluding extension.

This head 14 have be parallel to each other on end face 18 and lower surface 20, the height system that this upper and lower end face is 20 is greater than the thickness of

shank

12,12 upside positions with major axis one end of one of its major axis end and this head 14 of this shank join, and the junction that is used to this head 14 and this shank 12 forms a shoulder face 22.Be in present embodiment, to be that this shank 12 is begun from the junction with this negative winding stem 14 with a predetermined angular (as 15 degree) toward tilting, so that it can be comparatively smoothly on pulling what this must one carries.

This head 14 is provided with one to be run through on this, lower surface 18,20 register hole 24, this register hole 24 is provided with two relative fixed clamp faces 26 away from one of this handle 12 end, 28, this two fixed

clamp face

26,28 be toward in contrast to the direction of this shank 12 mutually near and be with equidistant this head 14 major axis x that lay respectively at, two sides of x ', the abstract elongated surfaces of the two (shown in Fig. 4 dotted line) is to intersect with 60 degree, in addition, be in the present embodiment with one with this head 26, one of 28 ends join, two medial surfaces 32,34 respectively with this fixed clamp face 26 respectively, 28 other ends join, respectively this medial surface 32,34 is close mutually near one of this shank 12 end toward this register hole 24.

This head 14 in the hole of this register hole 24 face and 22 in this shoulder face be provided with one with its major axis x, the perforation 36 that x ' is parallel or coaxial, between this register hole 24 is near an end of these shanks 12 and this shank 12, be provided with a containing hole 38, this containing hole 38 is to communicate with this perforation 36, one swivel becket 40 is placed in this containing hole 38, one adjust bolt 42 be stretch through this perforation 36 and this swivel becket 40 annular distance 44 and the one end is stretched in this register hole 24, the bolt body of this adjustment bolt 42 is provided with an axially extended groove 46, one dowel 48 is fixedly arranged on the partition wall 50 of 38 of this register hole 24 and this containing holes, its medial extremity system stretches in this perforation 36 and is embedded on this groove 46, the annular distance 44 hole faces of this swivel becket 40 are provided with the screw thread with these adjustment bolt 42 bridle joints, by this, when this swivel becket 40 of rotation, this adjustment bolt 42 can be done straight-line displacement on it is axial.In order to make this swivel becket 40 be easy to pull, on making, can make it have suitable external diameter, after being placed in this containing hole 38 and supplying this adjustment bolt 42 to run through, its part anchor ring can exceed end face 18 on this head 14, certainly, preferably in the some lines of anchor ring punching press of this swivel becket 40, so that it is easier to be pulled.

The inserting end 54 that this adjustment bolt 42 is positioned at this register hole 24 is provided with a planar end surface 56, one block 58 has a perforation 60 fastening for this inserting end 54, one top side face 62 is in the same plane with this plane 56, this top side face 62 is to constitute a movable clamping face 64 with this planar end surface 56, the abstract elongated surfaces system of these activity clamping face 64 both sides respectively with this fixed clamp face 28 respectively, 26 abstract elongated surfaces intersects (shown in Fig. 4 dotted line) with 60 degree, so, can make this two fixed

clamp face

26,28 constitute a grasping part that three clamping faces that can correspond respectively to hexagonal (hexagon)nut or non-conterminous three sides of bolt head and adjustable size arranged with this activity clamping face 64 in this register hole 24 pulls six of different size and resembles nut or bolt head.In the present embodiment, the inserting end 54 that lies in this adjustment bolt 42 sets firmly the area that a block 58 strengthens this activity clamping face 64, certainly, as be used for the less occasion of size, also can not set firmly this block 58, only with the planar end surface 56 of this inserting end 54 as this activity clamping face 64, in addition, for strengthening the space of this register hole 24, lie in its end and be provided with an alcove 66, for accommodating this block 58 near this shank 12.

When desire utilizes this monkey wrench 10 to pull the different hex bolts of

size

70 or 80, at first be all sides that these register hole 24 covers are fixed in this

nut

70 or 80, and make this fixed

clamp face

26,28 respectively fit in the

relative side

72,74 or 82,84 of this hexagonal (hexagon)

nut

70 or 80 respectively, the movable clamping face 64 of this swivel becket 40 of turn on this adjustment bolt 42 is closely attached on the

downside

76 or 86 of this hexagonal (hexagon)

nut

70 or 80 then, at this moment, as pull this shank 12, can be with this hexagonal (hexagon)

nut

70 or 80 toward its direction turn of pulling.

By aforesaid explanation as can be known, the swivel becket 40 that monkey wrench of the present utility model 10 owing to be used for drives this adjustment bolt 42 has above the part anchor ring of this head 14 upper surfaces, therefore, as long as it is the user touches these anchor rings and gets final product the size that this swivel becket 40 of turn is adjusted grasping part, very easy to be quick.Moreover, because the grasping part of this monkey wrench 10 has three clamping faces that intersect with 60 degree respectively, therefore after hexagonal (hexagon)nut or hexagon bolt head are inserted in this grasping part, these three clamping faces can form an airtight application of force space, so, even if its side of hexagonal (hexagon)nut or hexagon bolt head is destroyed, the situation that does not also have slippage when the application of force is pulled takes place.In addition, because this monkey wrench 10 its torsion system when pulling is on average born by three clamping faces, therefore be difficult for taking place the situation that clamping face bursts apart.

Claims

1, a kind of monkey wrench of improvement is characterized in that comprising:

One shank;

One head, extend outward from one of this shank major axis end, include one of be parallel to each other a upper surface and a lower surface, one register hole runs through this upper and lower end face, this register hole is provided with perpendicular to this upper and lower end face and two relative fixed clamp faces away from one of this shank side, and the past direction in contrast to this shank of this two fixed clamp face system is close mutually and the two abstract elongated surfaces towards this direction is intersected with about 60 degree;

One adjusts bolt axially is fixedly arranged on to straight-line displacement on this head, one end system stretches in this register hole, this inserting end is provided with the movable clamping face that can adjust the bolt displacement with this, on this activity clamping face system and this head, the lower surface is vertical and make its towards abstract elongated surfaces of and arranged on left and right sides respectively with about 60 degree and respectively this fixed clamp face or its abstract elongated surfaces are crossing;

This head is provided with a containing hole on the position adjacent to this adjustment bolt straight-line displacement path, one swivel becket is placed in this containing hole and makes its part anchor ring exceed end face on this head, the annular distance of this swivel becket system is provided with screw thread with this adjustment bolt bridle joint by this adjustment bolt-through and in the hole face, in order to when this swivel becket of turn, this adjustment bolt can be done axial straight-line displacement.

2, the monkey wrench of improvement according to claim 1 is characterized in that this shank system end face on this head begins up to extend outward with a predetermined angular.

3, the monkey wrench of improvement according to claim 1 and 2, it is characterized in that highly being greater than the height between the upper and lower end face of this shank between the upper and lower end face of this head, this shank system is from extending outward near one of this head upper surface position, with so that the alternately place of this head and this shank forms a shoulder face, be provided with a perforation that communicates with this containing hole between the hole face of this shoulder face and this register hole, this adjustment bolt system stretches through this perforation and makes it do straight-line displacement along the hole axle of this perforation.

4, the monkey wrench of improvement according to claim 3 is characterized in that respectively this fixed clamp face is the both sides that equidistantly lay respectively at this head major axis, and the hole axle system of this perforation is parallel to the major axis of this head.

5, the monkey wrench of improvement according to claim 4, the inserting end that it is characterized in that this adjustment bolt has one with its axially vertical planar end surface and be installed with a block, and this block has one and forms this activity clamping face with this inserting end planar end surface top end face in the same plane in order to cooperate this planar end surface.

6, the monkey wrench of improvement according to claim 5 is characterized in that this register hole is provided with an alcove toward this shank extension adjacent to one of this shank end, holds this block in order to number.

7, the monkey wrench of improvement according to claim 3, it is characterized in that this adjustment bolt is provided with a groove that extends axially, one dowel is fixedly arranged on this head and makes the one end stretch into this perforation and be embedded in this groove, with so that this adjustment bolt only can be done axial straight-line displacement when this swivel becket turn in this perforation.