CN100569454C

CN100569454C - Single direction ratchet mechanism

Info

Publication number: CN100569454C
Application number: CNB2008100189535A
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: 2009-12-16
Anticipated expiration: 2028-02-01
Also published as: CN101264596A

Abstract

The invention discloses a kind of single direction ratchet mechanism, aim to provide a kind of high-performance, high moment of torsion; Intensity is good, in light weight; Ratchet does not have and suppresses, and the band that do not stagnate circling round; Ratchet working stability, single direction ratchet mechanism reliable, easy to use.Its technical scheme is; On the plane that handle one end thickness equates, be provided with a two center of circle A, B through hole, connecting extended line with center of circle A, B meets at and is made as on the through hole armrest handle one end r hole wall, one to 20 internal tooth is all established in the footpath to the left and right on hole wall, be built-in with ratchet at through hole, ratchet can radially move back and forth with internal tooth and be meshed along center of circle A, B direction, and radially one-directional rotation and separation can be rotated alone jointly.Handle center's line is connected extended line with center of circle A, B be to intersect or straight line, also parallel lines.Ratchet is provided with square hole or joins with machine components.The crest top land C of each tooth of ratchet is a circular arc, and each tooth length of side D is greater than tooth length of side E; Each tooth length of side T of internal tooth is greater than tooth length of side L.

Description

Single direction ratchet mechanism

Skill wood field

The present invention relates to a kind of intermittent motion mechanism, particularly a kind of single direction 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, shortcoming is pioneering.Be to have defectives such as ratchet is little, ratchet is thin, pivot pin is weak, when using slightly big moment, be easy to produce and jump tooth even collapse the tooth phenomenon, and mechanism's complexity, intensity difference.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 present invention has overcome the defective that exists in the prior art, has proposed a kind of high-performance, high moment of torsion; Part is few, intensity good, in light weight, be convenient to make, use single direction ratchet mechanism spry and light, that have pioneering innovation.

Technical solution of the present invention is: 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 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 radius R, the through hole of r, on armrest handle one end r hole wall, with center of circle A, B connects the extended line symmetry and establishes one to 20 internal tooth, 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 common one-directional rotation and separate the ratchet that can rotate alone is provided with one at the ratchet outer wall and encloses tooth, and the crest top land C of each tooth is a circular arc, tooth length of side D is greater than tooth length of side E, the crest top land F of described each tooth of internal tooth is circular arc or planar shaped, and tooth length of side T is greater than tooth length of side L, and 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 intersects, angle beta.Described center of circle A, B connect extended line and handle center's line is parallel to each other.

The present invention compared with prior art advantage is: moment is big, the number of teeth is many, swing angle is little; Mechanism is simple, part is few, easy manufacturing; Ratchet does not have and suppresses, and the band that do not stagnate circling round; Ratchet mechanism working stability, use are reliably.

Description of drawings

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

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

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail.

Fig. 1, shown in Figure 2, on the plane that a thickness equates, be provided with a two center of circle A, B radius R, r through hole, connecting extended line with center of circle A, B meets at and is made as on the through hole armrest handle one end r hole wall, on hole wall, directly divide equally to the left and right and establish one to 20 internal tooth 3 altogether, 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, and the tooth on the ratchet 5 can be meshing with each other with each tooth of internal tooth 3, can radially common one-directional rotation and separate and can rotate alone.On through hole outer wall radially, be connected to handle 2, handle 2 medium lines are handle center's line 1, handle center's line 1 is connected extended line and intersects with center of circle A, B, angle beta, handle center's line 1 are connected extended line also can be same straight line or be parallel to each other line with center of circle A, B.On ratchet 5, be provided with nut and pull hole or square hole or mechanical workpieces 4.The crest top land C of ratchet 5 each tooth is a circular arc, and tooth length of side D is greater than tooth length of side E.The crest top land F of internal tooth 3 each tooth is circular arc or planar shaped, and tooth length of side T is greater than tooth length of side L.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 present invention is using the work using method on plant equipment and the hardware ﹠ tools: hold the workpiece that is provided with on workpiece that handle 2 will rotate or nut etc. and the ratchet 5 and 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 rotation, revolve and 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 immediately radially circle round.Work on, repeat above operation.

Claims

1, a kind of single direction 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 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 radius R, the through hole of r, on armrest handle one end r hole wall, with center of circle A, B connects the extended line symmetry and establishes one to 20 internal tooth (3), 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 common one-directional rotation with separate the ratchet (5) that can rotate alone, be provided with a circle tooth at ratchet (5) outer wall, the crest top land C of each tooth is a circular arc, and tooth length of side D is greater than tooth length of side E, and the crest top land F of each tooth of described internal tooth (3) is circular arc or planar shaped, tooth length of side T is greater than tooth length of side L, and described handle (2) medium line is handle center's line (1).

2, single direction 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, single direction 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, angle beta.

4, single direction 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.