CN201195291Y

CN201195291Y - Bidirectional ratchet mechanism

Info

Publication number: CN201195291Y
Application number: CNU200820031624XU
Authority: CN
Inventors: 王宁生; 王宗孚
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-01
Filing date: 2008-02-01
Publication date: 2009-02-18
Anticipated expiration: 2018-02-01

Abstract

The utility model discloses a bidirectional ratchet mechanism, aiming to provide the bidirectional ratchet mechanism which has no reversing buttons, needs not turn over, can freely rotate forward and reversely, and has simple structure, wherein, a ratchet does not have elastic pressure and can revolve smoothly. The technical proposal is as follows: the plane with uniform thickness at one end of a handle is provided with a through hole with double circle centers A and B, and one to twenty internal teeth are symmetrically and radially arranged at the hole wall and centered at the point on the hole wall where the extension line connecting the circle centers A and B intersects with R or r hole wall. The ratchet is arranged in the through hole, can reciprocate along the direction of the circle centers A and B and is engaged with the internal teeth, and the ratchet and the internal teeth can rotate together in forward and reverse directions and can be separated to rotate independently. The center line of the handle and the extension line connecting the circle centers A and B can be the same line, or can be parallel or intersect. The ratchet is provided with a square tenon or is connected with machine elements. Each tooth top width D of the ratchet is more than or equal to the tooth bottom width E; and each tooth top width T of the internal teeth is more than or equal to the tooth bottom width L.

Description

Bidirectional ratchet mechanism

Technical field

The utility model relates to a kind of intermittent motion mechanism, particularly a kind of bidirectional ratchet mechanism.

Background technology

Ratchet mechanism is used wide model in every profession and trade.In order to increase work efficiency, ratchet mechanism is applied in continuous expansion in the hardware ﹠ tools field.Along with scientific technological advance, the modern industrial and agricultural development of the difficult adaptation of existing ratchet mechanism.Therefore, research high-performance, high moment of torsion ratchet mechanism have been the difficult problem that the mechanical investigations personnel need to be resolved hurrily.Thereby, apply for that in recent years the ratchet mechanism patent is numerous.Chinese patent: a kind of ratchet mechanism, the patent No. 02228083.9, this application case discloses, and alternate position spike is puted forth effort in the work of many ratchets, makes swing angle little.Its principle is the same with old-fashioned ratchet mechanism, is have defectives such as ratchet is little, ratchet is thin, pivot pin is weak, single direction ratchet, is short of pioneering.When using slightly big moment, be easy to produce and jump tooth even collapse the tooth phenomenon, and will confirm along reverse when using.As for, it is bigger that many ratchets then suppress resistance to ratchet, and ratchet stagnates to ratchet, and band is easier to circle round simultaneously, and ratchet mechanism can't be worked.

Summary of the invention

The utility model has overcome the defective that exists in the prior art, has proposed a kind of high-performance, high moment of torsion; Do not have along reverse constraint; Part is few, be convenient to make, use bidirectional ratchet mechanism spry and light, that have pioneering innovation.

Technical solutions of the utility model are: comprise that the ratchet two ends are provided with two back-up rings of ratchet retaining in through hole, ratchet is provided with nut and pulls hole or square tenon and mechanical workpieces, it is characterized in that, on the plane that handle one end thickness equates, be provided with a two center of circle A, the B through hole, with center of circle A, during B connection extended line meets on through hole one end R or the r hole wall and is, symmetry radially is provided with one to 20 internal tooth on hole wall, being built-in with at through hole can be along center of circle A, the B direction moves back and forth, and with hole wall on one to 20 internal tooth be meshing with each other, can be radially suitable jointly, de-rotation with separate the ratchet that can rotate alone, described handle medium line is handle center's line.

Described center of circle A, B connect extended line and handle center's line is a same straight line.Described center of circle A, B connect extended line and handle center's line is parallel to each other.Described center of circle A, B connect extended line and handle center's line intersects.Described ratchet outer wall is provided with a circle tooth, and the crest top land C of each tooth is a circular arc, and tooth top width D is equal to or greater than the wide E of tooth root.The crest top land F of described each tooth of internal tooth is circular arc or planar shaped, and tooth top width T is equal to or greater than the wide L of tooth root.Described symmetry radially is provided with one to 20 internal tooth on hole wall, also can asymmetricly radially be provided with one to 20 internal tooth on hole wall.

The utility model compared with prior art advantage is: do not have along contrary commutation button, also need not turn-over, can rotate with suitable, the reverse ratchet of hope, and the facewidth is thick, moment is big; Mechanism is simple, part is few, easy manufacturing; Gear does not have and suppresses, and the band etc. that do not stagnate circling round.

Description of drawings

The application principle schematic diagram on double offset ring spanner with ratchet of bidirectional ratchet mechanism shown in Fig. 1 front view, Fig. 2 vertical view.

The application principle schematic diagram on box socket set of bidirectional ratchet mechanism shown in Fig. 3 front view, Fig. 4 vertical view.

Among the figure: 1. handle center's line, 2. handle, 3. internal tooth, 4. nut is pulled hole or square tenon and mechanical workpieces, 5. ratchet, 6. back-up ring.

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:

Fig. 1,2 and Fig. 3,4 shown in, on the plane that a thickness equates, be provided with one two center of circle A, B through hole are arranged, connecting extended line with center of circle A, B meets at and is made as on through hole one end R or the r hole wall, symmetry radially is provided with one to 20 internal tooth 3 on hole wall, be built-in with the ratchet 5 that is provided with a circle tooth on the outer wall at through hole, ratchet 5 can radially move back and forth along center of circle A, B direction, tooth on the ratchet 5 can be meshing with each other with each tooth of internal tooth 3, can be radially clockwise jointly or reverse and separate and can rotate alone.Be connected to handle 2 on through hole outer wall radially, handle 2 medium lines are handle center's line 1, and handle center's line 1 is connected extended line with center of circle A, B be same straight line, also can be the lines or crossing that is parallel to each other.On ratchet 5, be provided with nut and pull hole or square tenon or mechanical workpieces 4.The crest top land C of ratchet 5 each tooth is that circular arc, tooth top width D are equal to or greater than the wide E of tooth root; The crest top land F of internal tooth 3 each tooth is circular arc or planar shaped, and tooth top width T is equal to or greater than the wide L of tooth root.On the outer wall of the two ends of ratchet 5, be provided with two back-up rings 6 of ratchet 5 retainings in through hole and two grooves of dress back-up ring 6.Back-up ring 6 is spring annulus that a radius is cut off.

The utility model is being used the work using method on plant equipment and the hardware ﹠ tools: hold handle 2 will rotational workpieces or nut etc. and ratchet 5 on the workpiece that is provided with join or socket, radially littlely push away the tooth that makes armrest handle 2 one end internal tooths 3 and the tooth of ratchet 5 is meshing with each other, radially conrotatory or contrary rotation, revolve stop, radially little handle 2, the tooth of internal tooth 3 separates with the tooth of ratchet 5, and handle 2 circles round.Continued operation is: littlely push away immediately radially rotation, revolve stop, little drawing radially circle round.The above operation of the repetition that works on.

Claims

1. bidirectional ratchet mechanism, comprise that ratchet (5) two ends are provided with two back-up rings (6) of ratchet (5) retaining in through hole, ratchet (5) is provided with nut and pulls hole or square tenon and mechanical workpieces (4), it is characterized in that, on the plane that handle (2) one end thickness equate, be provided with a two center of circle A, the B through hole, with center of circle A, during B connection extended line meets on through hole one end R or the r hole wall and is, symmetry radially is provided with one to 20 internal tooth (3) on hole wall, being built-in with at through hole can be along center of circle A, the B direction moves back and forth, and with hole wall on one to 20 internal tooth (3) be meshing with each other, can be radially suitable jointly, de-rotation with separate the ratchet (5) that can rotate alone, described handle (2) medium line is handle center's line (1).

2. bidirectional ratchet mechanism according to claim 1 is characterized in that, described center of circle A, B connect extended line and handle center's line (1) is a same straight line.

3. bidirectional ratchet mechanism according to claim 1 is characterized in that, described center of circle A, B connect extended line and handle center's line (1) is parallel to each other.

4. bidirectional ratchet mechanism according to claim 1 is characterized in that, described center of circle A, B connect extended line and handle center's line (1) intersects.

5. bidirectional ratchet mechanism according to claim 1 is characterized in that, described ratchet (5) outer wall is provided with a circle tooth, and the crest top land C of each tooth is a circular arc, and tooth top width D is equal to or greater than the wide E of tooth root.

6. bidirectional ratchet mechanism according to claim 1 is characterized in that, the crest top land F of each tooth of described internal tooth (3) is circular arc or planar shaped, and tooth top width T is equal to or greater than the wide L of tooth root.

7. bidirectional ratchet mechanism according to claim 1 is characterized in that, described symmetry radially is provided with one to 20 internal tooth (3) on hole wall, also can asymmetricly radially be provided with one to 20 internal tooth (3) on hole wall.