CN201596991U

CN201596991U - Normally-reversely usable wrench for arbor nuts

Info

Publication number: CN201596991U
Application number: CN2009201829740U
Authority: CN
Inventors: 陈金堆
Original assignee: ZHANGZHOU SHENGYUAN MACHINERY INDUSTRIAL Co Ltd
Current assignee: ZHANGZHOU SHENGYUAN MACHINERY INDUSTRIAL Co Ltd
Priority date: 2009-09-16
Filing date: 2009-09-16
Publication date: 2010-10-06
Anticipated expiration: 2019-09-16

Abstract

The utility model discloses a normally-reversely usable wrench for arbor nuts, which is provided with a ring body forming a round hole at the center. An equilateral polygonal holding groove is arranged on the circumference of the round hole in a concave manner, each corner of the equilateral polygonal holding groove forms an arc corner, an annular partition is disposed inside the holding groove, the annular partition is provided with notches corresponding to the arc corners while each notch has narrow inside and wide outside, columnar rollers are respectively arranged inside the notches in a sliding manner, and a handle extending outwards is combined to the circumference of the ring body. In use, a user can nest a nut of an arbor with the round hole of the ring body, and then spins the handle, the rollers project inwards under pushing of the wall faces beside the arc corners, thereby the nut can be rotated under clamping of the rollers, and when reversely spinning the handle, the rollers also can project inwards to clamp the nut under pushing of the wall faces on other side of each arc corner, thereby achieving the effect of normally or reversely rotating the nut in use.

Description

A kind of can be just contrary knife bar nut runner that uses

Technical field

The utility model relates to a kind of spanner that applies to knife bar, refer to especially a kind of be used to rotate the knife bar nut can the just contrary knife bar nut runner that uses.

Background technology

Existing spanner is provided with ratchet or opposite face, with ratchet or opposite face be sticked in the polygonal nut around, then rotating spanner makes nut and spanner together rotate and reaches screw lock or the effect of the nut that gets loose.

But because the ratchet of general spanner or the size of opposite face are fixing, though the design of monkey wrench is arranged, but in rotation process, all can not adjust, therefore when general spanner applies to surperficial comparatively smooth knife bar nut, produce problem of slip because the application of force is big easily, cause the use puzzlement of the locking or the knife bar nut that gets loose.

The utility model content

At the deficiencies in the prior art part, the utility model provides a kind of can be just contrary knife bar nut runner that uses, and it provides preferable chucking power with the needle roller that is provided with around the driving ring, so that preferable lock nut effect to be provided.

For achieving the above object, technical solutions of the utility model are:

A kind of can be just contrary knife bar nut runner that uses, it comprises a driving ring, it is provided with a ring body, this ring body is horizontally disposed with and runs through a circular hole in intermediate vertical, to around should circular hole in the inwall of this ring body with around form be arranged with one and resist groove, this resistance groove is the shape of regular polygon, it forms an arc chord angle respectively in each corner, in this resistance groove, a spacer is set, this spacer is the upright torus that is provided with, the position of corresponding each arc chord angle, around this spacer, offer a recess respectively, each recess is rectangular and be interior narrow outer wide form, with rotating form one needle roller is set in each recess, and each needle roller is upright cylinder and each arc chord angle place that is contained in this resistance groove.And a lever, it has the straight-bar body at forward and backward two ends, and it also is incorporated into the outer peripheral face of this ring body with front end.

The usefulness of technique scheme is:

When the utility model is locked the nut of knife bar, it is located at around the nut with circle hole sleeve, then rotate lever with the direction of clockwise, this moment, spacer can slide toward the direction of inverse clock by relative ring body with each needle roller of being located at spacer, because resisting the reverse end wall surface of each arc chord angle of groove is the form that phases down, therefore in the rotation process gradually each needle roller of pushing tow towards projecting inward, mode with each needle roller clamping nut drives the direction rotation of nut with clockwise, make the user produce the situation of skidding when avoiding the application of force to strengthen with firm mode rotating screw cap.

When needs backwards rotation nut, only reversing lever can make spacer slide toward the direction of clockwise with the relative ring body of each needle roller of being located at spacer, this moment each arc chord angle clockwise the reduction wall of a side can promote each needle roller gradually to projecting inward, whereby with needle roller clamping nut, the operation that nut is got loose toward the counterclockwise rotation with lever.

Because the wall of each arc chord angle both sides of the utility model is the form of reducing inwardly gradually, therefore the utility model just, during the de-rotation lever, the application of force of rotating lever along with the user increases, each needle roller is subjected to pushing tow just big more towards projecting inward degree, the size that therefore can cooperate rotation urging, increase the strength of needle roller clamping nut, order makes the user can be with firm mode rotating screw cap whereby, produce the situation of skidding when avoiding the application of force to strengthen, except preferable screw lock can be provided, beyond the effect of knife bar nut of getting loose, because can be just when using, de-rotation is used, and does not therefore have the direction restriction of use and more can make things convenient for the user to use.

Description of drawings

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

Fig. 2 is the exploded view of the utility model preferred embodiment;

Fig. 3 is the stereogram of the utility model preferred embodiment;

Fig. 4 is the enforcement schematic diagram of the utility model preferred embodiment clockwise direction rotating screw cap;

Fig. 5 is the utility model preferred embodiment enforcement schematic diagram of rotating screw cap counterclockwise.

The specific embodiment

The utility model now is described in conjunction with the accompanying drawings and embodiments.

The utility model is a kind of can be just contrary knife bar nut runner that uses, please referring to the preferred embodiment shown in Fig. 1-3, it comprises a driving ring (10), it is provided with a ring body (11), ring body (11) is horizontally disposed torus, it runs through a circular hole (111) in intermediate vertical, be arranged with class's recess (112) around corresponding again circular hole (111) bottom in the bottom surface of ring body (11), around in the middle of the corresponding circular hole (111), in the internal perisporium of ring body (11) with around form be arranged with one and resist groove (113), resisting groove (113) is orthohexagonal shape, it forms an arc chord angle (1131) in each corner, and the bottom forms opening in class's recess (112), forms an abutment face (114) in a side of ring body (11) outer peripheral face, wears a location screw (115) inwardly in the centre of abutment face (114).

In class's recess (112) embedding and screw lock one annular cover plate (12) is the lamellar body of annular, and the diameter length of its internal diameter equals the diameter length of this circular hole (111), and the bottom of groove (113) is resisted in sealing.In resisting groove (113), a spacer (13) is set, spacer (13) is the upright torus that is provided with, the position of corresponding each arc chord angle (1131), around spacer (13), offer a recess (131) respectively, each recess (131) is rectangle and is interior narrow outer wide form, the bottom of each recess (131) also forms opening in the bottom surface of spacer (13), with rotating form one needle roller (14) is set in each recess (131), each needle roller (14) is that upright cylinder and each arc chord angle (1131) that is contained in resistance groove (113) are located, because each arc chord angle (1131) is suitable, contrary both sides are all the wall that reduces width inwardly, so when each needle roller (14) rotates with spacer (13), the other wall of each arc chord angle (1131) side can promote needle roller (14) to projecting inward circular hole (111), the degree of reducing inwardly along with the other wall of each arc chord angle (1131) increases, when the degree of rotating with spacer (13) when each needle roller (14) was big more, each needle roller (14) was just big more towards the degree of projecting inward circular hole (111).

One lever (20), it has the straight-bar body at forward and backward two ends, it also protrudes out a screw rod (21) forward in the centre of front end face, lever (20) is resisted against the abutment face (114) of ring body (11) with front end face, and in positioning screw hole (115) location, combine with the ring body (11) of driving ring (10) whereby with screw rod (21) screw lock.

The utility model removes aforementioned preferred embodiment, to resist groove (113) is made as beyond the hexagon, also can the shape that groove (113) is made as other regular polygons such as pentagon, hexagon will be resisted, form five or seven s' arc chord angle (1131) whereby, and cooperation has the spacer (13) that equates recess (131) with arc chord angle (1131) quantity, and the needle roller (14) that equates with arc chord angle (1131) quantity use, the utility model is not limited for the arc chord angle (1131) that resists groove (113) and the cooperation quantity of needle roller (14) at this.

When the utility model is used in the nut (30) of locking knife bar, as Fig. 3, shown in 4, with the circular hole (111) of driving ring (10) on every side by the nut (30) that is sheathed on knife bar down up, then rotate lever (20) with the direction of clockwise, spacer this moment (13) can slide toward the direction of inverse clock by relative ring body (11) with each needle roller (14) of being located at spacer (13), but be the form that phases down owing to resist the wall of the reverse end of each arc chord angle of groove (113) (1131), therefore can promote each needle roller (14) towards projecting inward circular hole (111), and the application of force of rotating lever (20) along with the user increases, the degree that each needle roller (14) protrudes clamping nut (30) is just big more, can increase the strength of clamping with the size of rotation urging, make the user produce the situation of skidding when avoiding the application of force to strengthen with firm mode rotating screw cap (30).

When needs backwards rotation nut (30), as shown in Figure 5, only need reverse lever (20), lever (20) is rotated the direction slip that can make spacer (13) and the past clockwise of the relative ring body of each needle roller (14) (11) of being located at spacer (13) with the direction of inverse clock, each arc chord angle this moment (1131) reduction wall of a side clockwise can promote each needle roller (14) to projecting inward, drives nut (30) with needle roller (14) clamping whereby and gets loose toward the counterclockwise rotation simultaneously.

Claims

1. can be just contrary knife bar nut runner that uses, be characterised in that: it comprises:

One driving ring, it is provided with a ring body, this ring body is horizontally disposed with and runs through a circular hole in intermediate vertical, to around should circular hole in the inwall of this ring body with around form be arranged with one and resist groove, this resistance groove is the shape of regular polygon, it forms an arc chord angle respectively in each corner, in this resistance groove, a spacer is set, this spacer is the upright torus that is provided with, the position of corresponding each arc chord angle is offered a recess respectively around this spacer, each recess is rectangular and be interior narrow wide form outward, with rotating form one needle roller is set in each recess, each needle roller is upright cylinder and each arc chord angle place that is contained in this resistance groove; And

One lever, it has the straight-bar body at forward and backward two ends, and it also is incorporated into the outer peripheral face of this ring body with front end.

2. a kind of can be just contrary knife bar nut runner that uses as claimed in claim 1, it is characterized in that: be arranged with class's recess around the wherein corresponding described circular hole bottom in the bottom surface of this ring body, this bottom of resisting groove forms opening in this class's recess, embed and screw lock one annular cover plate in this class's recess, this annular cover plate is the lamellar body of annular, the diameter length of its internal diameter equals the diameter length of this circular hole, and seals the bottom of this resistance groove.

3. a kind of can be just contrary knife bar nut runner that uses as claimed in claim 1 or 2, it is characterized in that: wherein said ring body is a torus, side in this ring body outer peripheral face forms an abutment face, wear a location screw inwardly in the centre of this abutment face, centre in described lever front end face protrudes out a screw rod forward, this lever is resisted against this abutment face with front end face, and locatees in this positioning screw hole with this screw rod screw lock.