CN201195292Y

CN201195292Y - Single direction ratchet mechanism

Info

Publication number: CN201195292Y
Application number: CNU2008200316254U
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 unidirectional ratchet mechanism, aiming to provide the unidirectional ratchet mechanism which has high performance, high torquemoment, good strength and light weight, wherein, a ratchet does not have elastic pressure, can revolve smoothly, and has stable and reliable operation and convenient use. 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 hole wall close to the handle. The ratchet is arranged in the through hole and 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 unidirectionally rotate together in radial direction 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 intersect or are the same line, or are parallel. The ratchet is provided with a square hole or is connected with machine elements. Each tooth top surface of the ratchet presents an arc shape, each tooth side length D is more than the tooth side length E, and each tooth side length T of the internal teen is more than the tooth side length L.

Description

Single direction ratchet mechanism

Technical field

The utility model 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 utility model 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 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 hole 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, B, radius is R, the through hole of r, with center of circle A, during B connection extended line meets on the through hole armrest handle one end r hole wall and is, on hole wall, directly divide equally to the left and right and establish one to 20 internal tooth altogether, 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 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 intersects, angle beta.Described center of circle A, B connect extended line and handle center's line is parallel to each other.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 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.Establish one to 20 internal tooth described directly dividing equally to the left and right on hole wall altogether, also can establish one to 20 internal tooth altogether uneven to the left and right the branch in the footpath on hole wall.

The utility model 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 utility model is described in further detail.

Fig. 1, shown in Figure 2, on the plane that a thickness equates, be provided with two center of circle A, a B, radius is the through hole of R, r, 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 utility model is being used 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. 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 square hole 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, B, radius is R, the through hole of r, with center of circle A, during B connection extended line meets on the through hole armrest handle one end r hole wall and is, on hole wall, directly divide equally to the left and right and establish one to 20 internal tooth (3) altogether, 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, 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 B.

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.

5. single direction 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 length of side D is greater than tooth length of side E.

6. single direction 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 length of side T is greater than tooth length of side L.

7. single direction ratchet mechanism according to claim 1 is characterized in that, establish one to 20 internal tooth (3) described directly dividing equally to the left and right on hole wall altogether, also can establish one to 20 internal tooth (3) altogether uneven to the left and right the branch in the footpath on hole wall.