CN206072274U

CN206072274U - Reversible ratchet mechanism

Info

Publication number: CN206072274U
Application number: CN201621077596.6U
Authority: CN
Inventors: 王健; 王刚; 王斌
Original assignee: Hanzhoung Hanfeng Electric Power Co Ltd
Current assignee: Hanzhoung Hanfeng Electric Power Co Ltd
Priority date: 2016-09-18
Filing date: 2016-09-18
Publication date: 2017-04-05
Anticipated expiration: 2026-09-18

Abstract

The utility model discloses a kind of reversible ratchet mechanism, including the ratchet with symmetrical profile of tooth and ratchet sleeve, a through hole vertical with ratchet axis, the stage casing of the through hole and the inwall insertion of ratchet sleeve are provided with the ratchet sleeve, the commutation ratch being slidably matched with which is installed in through hole；The shaft of commutation ratch is provided with the positive tooth and reverse tooth at two groups of intervals, and at least two teeth of positive tooth are engaged when can be rotated forward with ratchet, and at least two teeth of reverse tooth are engaged when can be rotated backward with ratchet；The stage casing of commutation ratch is provided with neutral gear groove, leaves gap between the bottom surface of the neutral gear groove and the tip circle of hook tooth.Promote commutation ratch displacement in through-holes so that positive tooth and reverse tooth formed with ratchet respectively it is stable engage, ratchet is rotated forward or backwards by pulling ratchet loop bar, the force application location of ratchet loop bar can also be adjusted by neutral gear groove.This utility model ratchet is non-slip, whole ratchet mechanism stable transmission, small volume.

Description

Reversible ratchet mechanism

Technical field

This utility model belongs to a kind of actuating device, and in particular to a kind of reversible ratchet mechanism.

Background technology

The ratchet that existing reversible ratchet mechanism includes the ratchet with symmetrical profile of tooth and is hinged on fork.But it is existing can Break-in ratchet mechanism has problems in that：When in one side ratchet insertion ratchet teeth groove, ratchet still has activity in teeth groove Space, when exerting a force larger, ratchet is easy to skidding occur；On the other hand, in the case where ratchet wheel diameter is larger, fork Can accordingly increase with the size of ratchet, and then cause the volume increase of whole ratchet mechanism, be unfavorable for the structural integrity of equipment.This Outward, existing reversible ratchet mechanism can carry out break-in clockwise and anticlockwise, but not possess neutral gear, if ratchet needs idle running When, then cannot be suitable for.

The content of the invention

In view of this, this utility model provides a kind of reversible ratchet mechanism, with non-slip, compact and with sky The characteristics of shelves.

The technical solution of the utility model is, a kind of reversible ratchet mechanism, including the ratchet with symmetrical profile of tooth, ratchet Set and ratchet toggle, it is characterised in that：A through hole vertical with ratchet axis is provided with the ratchet sleeve, in the through hole Section and the inwall insertion of ratchet sleeve, are provided with a commutation ratch in the through hole, commutation ratch is formed with through hole and is slidably matched； The commutation ratch shaft relative with ratchet is provided with two groups of intervals and with the symmetrical commutating tooth of middle separated time, respectively positive tooth With reverse tooth, at least two teeth of the positive tooth are engaged when can be rotated forward with ratchet, at least two teeth of the reverse tooth Engage when can rotate backward with ratchet；The stage casing of the commutation ratch, i.e., the interval location between two groups commutating tooths arranges free Shelves groove, leaves gap between the bottom surface of the neutral gear groove and the tip circle of hook tooth.

Further, the teeth groove angle of the ratchet is 70 °～100 °, the middle separated time of teeth groove angle and the radial line weight of ratchet Close, the positive tooth and reverse tooth of the ratch that commutates are matched with the tooth of the ratchet.

Further, the teeth groove angle of the ratchet is 90 °, and the middle separated time of teeth groove angle is overlapped with the radial line of ratchet, commutation The positive tooth and reverse tooth of ratch is matched with the tooth of the ratchet.

Further, the back side of the commutation ratch is provided with the detent at two intervals, and the ratchet sleeve is provided with one Location hole, the axis of location hole is vertical with the axis of the through hole and crosses the midpoint of through hole, is provided with for commutation in location hole The elastic mechanism of ratch positioning.

Further, the axis of the through hole is vertical with the axis of the ratchet toggle.

The beneficial effects of the utility model are, due to having symmetrical positive tooth and reverse tooth on the ratch that commutates, so pushing away Move to ratch the slide displacement in the through hole of ratchet sleeve, positive tooth and reverse tooth can be caused to form stable nibbling respectively with ratchet Close, by pulling ratchet loop bar, ratchet is rotated forward or backwards, ratchet skidding can be prevented effectively from, whole ratchet mechanism is increased The stability of transmission；Again due to commutate ratch on be provided with neutral gear groove, when neutral gear groove completely with hook tooth to it is corresponding when ratchet with regard to energy It is relative to dally, therefore ratchet toggle can be made to be returned to the position for being easy to stress, you can improve the convenience of this utility model operation. Further, since eliminate the oscillating rod type ratchet in original ratchet mechanism, complete to nibble with ratchet by need to only promoting commutation ratch Close, so effectively reducing the volume of ratchet mechanism.

Description of the drawings

Fig. 1 is schematic perspective view of the present utility model.

Fig. 2 is positive structure schematic of the present utility model.

Fig. 3 is top view of the present utility model.

Fig. 4 is the front section view of one embodiment of the present utility model.

Fig. 5 is the enlarged diagram of commutation ratch in the present embodiment.

Fig. 6 is the counter-rotational schematic diagram of driving pawl.

Fig. 7 is the schematic diagram that driving pawl is rotated forward.

Schematic diagram of Fig. 8 ratchets in neutral gear position.

In figure：1. ratchet, 2. ratchet sleeve, 201. ratchet toggles, 202. through holes, 202. location holes, 204. through holes, 3. ratchet Loop bar, 4. commutate ratch, 401. positive teeth, 402. scope neutral gear grooves, 403. reverse teeth, 404. limited impressions, 5. steel ball, 6. spring, 7. jackscrew.

Specific embodiment

In order that those skilled in the art more fully understands the technical solution of the utility model, below in conjunction with the accompanying drawings and tool The utility model is described in further detail for body embodiment.

As shown in Figures 1 to 5, this utility model includes the ratchet 1 with symmetrical profile of tooth, ratchet sleeve 2 and ratchet toggle 201.A through hole 202 vertical with 1 axis of ratchet is provided with ratchet sleeve 2, the stage casing of the through hole 202 is interior with ratchet sleeve 2 Wall insertion, is provided with a commutation ratch 4 in through hole 202, commutation ratch 4 is formed with through hole 202 and is slidably matched, and commutate ratch 4 The shaft relative with ratchet 1 is provided with two groups of intervals and symmetrical commutating tooth, respectively forward direction tooth 401 and reverse tooth 403, just One section neutral gear groove 402 is provided between tooth 403 to tooth 401 and reversely, between 1 outside circle of bottom surface and ratchet of the neutral gear groove 402 Leave gap.The commutation slide displacement in the through hole 202 of ratchet sleeve 2 of ratch 4 is promoted, the positive tooth 401 of its one end or anti-can be made Engage to tooth 403 with ratchet 1, you can change the direction of rotation of ratchet 1.

As shown in Figure 6 and Figure 7, when ratchet sleeve 2 drives 1 positive rotation (clockwise) of ratchet, the forward direction commutated on ratch 4 At least two teeth of tooth 401 can be engaged with ratchet 1, as shown in Figure 6；When ratchet sleeve 2 drives, ratchet 1 is reversely (counterclockwise) to be rotated When, at least two teeth of reverse tooth 403 commutated on ratch 4 can be engaged with ratchet 1, as shown in Figure 7.

In this utility model, the teeth groove angle of ratchet 1 is 80 °～100 °, the middle separated time of teeth groove angle and the radial line of ratchet 1 Overlap, the positive tooth 401 and reverse tooth 403 of the ratch 4 that commutates are matched with the tooth of ratchet 1.It is such to be designed to so that hook tooth Abundant with the engagement of corresponding commutating tooth when rotated, outside circle and the root circle of ratchet 1 of the commutating tooth of engagement are almost weighed Close, stress surface is big, and offset closely.

In the present embodiment, the teeth groove angle of ratchet 1 is 90 °, the crown of the positive tooth 401 and reverse tooth 403 of the ratch 4 that commutates Angle is 90 °, as shown in Figure 4 and Figure 6.The design of 90 ° of teeth is not only easily worked, and engaging tooth Impact direction is more reasonable, Will not skid.

In the present embodiment, the back side of the ratch 4 that commutates is provided with the detent 404 at two intervals, and ratchet sleeve 2 is provided with one Location hole 203, the axis of location hole 203 is vertical with the axis of through hole 202 and crosses the midpoint of through hole, is provided with location hole 203 For the elastic mechanism of the commutation positioning of ratch 4.The elastic mechanism includes that steel ball 5, spring 6 and jackscrew 7, steel ball 5 and jackscrew 7 are distinguished Positioned at the two ends of spring 6, steel ball 5 is against the back side of commutation ratch 4, when the ratch 4 that commutates slides in through hole 202, spacing steel Pearl 5 can slide to another limited impression from a limited impression.

In this utility model, the scope neutral gear groove 402 commutated on ratch 4 is applied not only to ratchet mechanism ratchet sleeve in operation process 2 return, and when ratchet 1 aligns scope neutral gear groove 402 completely, ratchet sleeve 2 can positive and negative bidirectional idling, as shown in Figure 8.Cause This, if when ratchet loop bar 3 is pulled when the position of stress is difficult, can by commutation ratch 4 be moved to scope neutral gear groove 402 thereon with The position that ratchet 1 is aligned completely, ratchet loop bar 3 thus can be adjusted to the position of suitable force, commutating tooth is then promoted again Bar 4, makes positive tooth 401 or reversely tooth 403 is engaged with ratchet 1, you can enter the rotation forward or backwards of rows ratchet 1.

It should be noted that the position of through hole 202, that is, the position for installing commutation ratch 4 can be in any position of ratchet sleeve 2 Put, and preferably position is that, near the position of ratchet toggle 201, the space at this is larger, and the ratch 4 that commutates is herein just In operation.

When in use, if desired ratchet 1 is rotated forward this utility model, need to only be promoted commutation ratch 4, be made positive tooth 401 are engaged with the ratchet 1 for rotating forward；If desired ratchet 1 is rotated backward, and need to only be promoted commutation ratch 4, be made reversely Tooth 403 is engaged with the ratchet 1 for reversely rotating.

Claims

1. a kind of reversible ratchet mechanism, including the ratchet with symmetrical profile of tooth, ratchet sleeve and ratchet toggle, it is characterised in that： A through hole vertical with ratchet axis, the stage casing of the through hole and the inwall insertion of ratchet sleeve, institute are provided with the ratchet sleeve One commutation ratch is installed in stating through hole, commutation ratch is formed with through hole and is slidably matched；The commutation ratch is relative with ratchet Shaft be provided with two groups of intervals and with the symmetrical commutating tooth of middle separated time, respectively positive tooth and reverse tooth, the positive tooth is extremely Rare two teeth are engaged when can be rotated forward with ratchet, and at least two teeth of the reverse tooth are nibbled when can be rotated backward with ratchet Close；The stage casing of the commutation ratch, i.e., the interval location between two groups commutating tooths is provided with neutral gear groove, the bottom surface of the neutral gear groove with Gap is left between the tip circle of hook tooth.

2. according to the reversible ratchet mechanism described in claim 1, it is characterised in that：The teeth groove angle of the ratchet is 70 °～ 100 °, the middle separated time of teeth groove angle is overlapped with the radial line of ratchet, the tooth of the positive tooth and reverse tooth and the ratchet of commutation ratch Matching.

3. according to the reversible ratchet mechanism described in claim 1, it is characterised in that：The teeth groove angle of the ratchet is 90 °, tooth The middle separated time of groove angle is overlapped with the radial line of ratchet, and the positive tooth and reverse tooth of the ratch that commutates are matched with the tooth of the ratchet.

4. according to the reversible ratchet mechanism described in claim 1, it is characterised in that：The back side of the commutation ratch is provided with two The detent at interval, the ratchet sleeve are provided with a location hole, and the axis of location hole is vertical with the axis of the through hole simultaneously The midpoint of through hole is crossed, is provided with location hole for the elastic mechanism of commutation ratch positioning.

5. according to the reversible ratchet mechanism described in claim 1, it is characterised in that：The axis of the through hole and the ratchet sleeve The axis of handle is vertical.