CN100360826C

CN100360826C - Automatic-clutching reversible ratchet wheel device

Info

Publication number: CN100360826C
Application number: CNB2006100420821A
Authority: CN
Inventors: 王光顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-20
Filing date: 2006-01-20
Publication date: 2008-01-09
Anticipated expiration: 2026-01-20
Also published as: CN1815050A

Abstract

The present invention relates to a ratchet wheel device, particularly to an automatic-clutching reversible ratchet wheel device. The present invention comprises an outer shell and a dog clutch, wherein the dog clutch is arranged in the outer shell; a separating spring is arranged between a driving disk and a driven disk of the dog clutch; the driving disk is sheathed on a spiral spline shaft by matching an internal spline; a polished rod is arranged on the top end of the spiral spline shaft; the driven disk can be sheathed on the top end of the spiral spline shaft in rotation; a driving shaft is fixedly connected to the driven disk, and is arranged in an end cap on the outer shell; the tail end of the spiral spline shaft is fixedly connected with a friction sheet; a pressure disk is arranged between the friction sheet and a rear end cap of the outer shell; a pressure disk spring is arranged between the pressure disk and the rear end cap. The device not only can complete the actions of a general ratchet wheel device, but also can be automatically returned after a handle action is completed. The driving disk and the driven disk are automatically separated. The driven disk can positively, reversely and freely rotate to satisfy the needs of specific occasions.

Description

Automatic-clutching reversible ratchet wheel device

Technical field

The present invention relates to a kind of ratchet unit, especially automatic-clutching reversible ratchet wheel device.

Background technique

In the operating control mechanism of machinery, usually to use ratchet unit.In powerful operation equipment, require ratchet unit not only will have the ability of unidirectional drive, also to have automatic separation function simultaneously, hurt sb.'s feelings to avoid in the unexpected equipment operation operating grip counter-rotating.Though existing various ratchet unit all has the function of unidirectional drive, its moving element is normal the joint, can not satisfy above-mentioned requirements.For example, my another patent application: " a kind of manual switching-off device of permanent magnet switch operating mechanism " (application number CN200510042050.7), a kind of device that output shaft is axially moved and can automatically lock is disclosed, this device drives output shaft by eccentric rotation and axially moves, eccentric rotation is by rotating shaft coaxial with it and stick control, and " crossing the dead point " effect that is connected the spring on the eccentric wheel can lock it in two states.The handle bounce-back is hurted sb.'s feelings when output shaft moves, need in rotating shaft, increase ratchet unit, this ratchet unit is wanted and handle and rotating shaft can be engaged, so that drive the rotating shaft rotation, rotational speed can be above the speed of handle under the effect of spring force later on but because rotating shaft turns over " dead point ", so the joint of handle and rotating shaft can only be an one-way engagement, handle can break away from when the rotating shaft rotational speed is fast; In addition, require this ratchet unit in rotatable handle, can engage with rotating shaft automatically,, after operation is finished, want and to separate automatically, hurt sb.'s feelings to avoid rotating shaft counter-rotating suddenly that handle is ejected so that drive the rotating shaft rotation.

Summary of the invention

For satisfying the demand, remedy the deficiency of existing ratchet unit, the purpose of this invention is to provide a kind of automatic-clutching reversible ratchet wheel device that has automatic separation function.

For achieving the above object, the present invention adopts following technological scheme:

Automatic-clutching reversible ratchet wheel device of the present invention comprises shell, is installed in the jaw clutch in the shell, and jaw clutch comprises that end face has the driving disc and the driven disc of oblique stepped tooth, is equipped with release spring between driving disc and the driven disc; Driving disc is contained on the helical spline shaft by the internal spline engage sleeves, and handle is installed on the driving disc, and this handle passes the side that slotted hole on the shell is fixedly mounted on driving disc; The front end of helical spline shaft is a polished rod, and driven disc is sleeved on the front end of helical spline shaft rotationally, and fixedly connected live axle on the driven disc, live axle are installed in the end cap on the shell; The fixedly connected friction plate of helical spline the tip of the axis is equipped with platen between the rear end cover of this friction plate and shell, and the platen spring is installed between platen and the rear end cover.

Have dividing plate between friction plate and driving disc, this dividing plate is fixedly connected on the inwall of shell, has the through hole that holds helical spline shaft on the dividing plate, and helical spline shaft is inserted in this through hole.

After adopting technique scheme, the present invention has following advantage:

1, handle and live axle are realized unidirectional drive, can finish the unidirectional drive requirement of ratchet unit;

Finish the automatic joint of driving disc and driven disc when 2, handle moves.

3, can self-return after handle action is finished, driving disc separates with driven disc, and driven disc can forward and reversely rotate freely, and satisfies requirement of special occasion;

If when 4, the driven disc rotating speed surpassed driving disc in driving disc and driven disc joint, driving disc separated automatically with driven disc, avoid the handle bounce-back to hurt sb.'s feelings.

Description of drawings

Fig. 1 is the structural representation of one embodiment of the present of invention;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the profile of tooth schematic representation of driving disc and driven disc end face tooth.

Embodiment

As shown in drawings, automatic-clutching reversible ratchet wheel device of the present invention comprises shell 1, is installed in jaw clutch 2, friction plate 8, platen 10 in the shell 1, and shell 1 is cylindric, and its two ends are equipped with end cap 5 and rear end cover 9 with bolt respectively; Jaw clutch 2, friction plate 8, platen 10 are installed in the shell 1 successively, between end cap 5 and rear end cover 9.Jaw clutch 2 comprises that end face has the driving disc 21 and the driven disc 22 of oblique stepped tooth as shown in Figure 3, between driving disc 21 and the driven disc 22 release spring 7 is installed, and the two ends of release spring 7 are equipped with compression spring 23; Driving disc 21 is contained on the helical spline shaft 3 by the internal spline engage sleeves, and handle 6 is installed on the driving disc 21, and this handle 6 passes the side that slotted hole on the shell 1 is fixedly mounted on driving disc 21; The centre of helical spline shaft 3 has helical spline for one section, and front end is a polished rod, and driven disc 22 is sleeved on the front end of helical spline shaft 3 rotationally.Fixedly connected live axle 4 on the driven disc 22, live axle 4 are installed in the end cap 5 on the shell 1, and the one end stretches out outside the end cap 5, is used for connecting moves actuator; The terminal fixedly connected friction plate 8 of helical spline shaft 3, between the rear end cover 9 of this friction plate 8 and shell 1 platen 10 is installed, between platen 10 and the rear end cover 9 platen spring 11 is installed, have feather key on the platen 10, this feather key is installed in the axial keyway of shell 1 inwall, platen 10 is endwisely slipped only, and can not rotate.

In addition, be subjected to bigger frictional force in order to make friction plate 8, have dividing plate 12 between friction plate 8 and driving disc 21, this dividing plate 12 is fixedly connected on the inwall of shell 1.Have bearing hole on the dividing plate 12, in this bearing hole bearing is installed, helical spline shaft 3 is inserted in this bearing.Like this, 12 pairs of helical spline shafts 3 of dividing plate play the effect of support; On the other hand, dividing plate 12 forms extruding force to friction plate 8 jointly with

platen

10, and 3 rotations produce damping to helical spline shaft.

Certainly, if do not use dividing plate 12, also can reach basic goal of the invention of the present invention.

During use, live axle 4 is connected with actuator.Because the effect of release spring 7, jaw clutch 2 is in separated state, and promptly driving disc 21 separates with driven disc 22, and live axle 4 can freely rotate; When 4 actions of needs live axle, can move handle 6, make driving disc 21 on helical spline shaft 3, turn over several angle, and slide to driven disc 22 directions along the helical spline on the helical spline shaft 3 simultaneously, up to being interlocked with driven disc 22.Before driving disc 21 and driven disc 22 interlocks, because the friction plate 8 of helical spline shaft 3 back is compressed by platen 10, helical spline shaft 3 can not rotate; After driving disc 21 and driven disc 22 interlocks, because driving disc 21 can not continue to move forward, if continue to move handle 6, driving disc 21 frictional force that must overcome 10 pairs of friction plates 8 of platen drives helical spline shaft 3 and driven disc 22 rotates together so, and by 4 rotations of driven disc 22 drive live axles, owing to be that oblique stepped tooth connects between driving disc 21 and the driven disc 22, thereby realize the unidirectional drive function.After the action of handle 6 is finished, as long as release handle 6, under the effect of release spring 7, driving disc 21 will separate with driven disc 22, handle 6 is got back to initial position, and at this moment, driven disc 22 and live axle 4 can forward and reversely rotate freely, because the effect of compression spring 23, release spring 7 and driving disc 21 can be with driven disc 22 rotations; After driving disc 21 and driven disc 22 interlocks, if the rotational speed of driven disc 22 is greater than the rotating speed of driving disc 21, the inclined-plane of the oblique stepped tooth of driving disc 21 and driven disc 22 end faces interacts, and driving disc 21 is pushed open, realize that driving disc 21 separates with driven disc 22, avoid handle 6 bounce-backs to hurt sb.'s feelings.

Claims

1, automatic-clutching reversible ratchet wheel device, comprise shell (1), be installed in the jaw clutch (2) in the shell (1), it is characterized in that: jaw clutch (2) comprises that end face has driving disc of oblique stepped tooth (21) and driven disc (22), is equipped with release spring (7) between driving disc (21) and the driven disc (22); Driving disc (21) is contained on the helical spline shaft (3) by the internal spline engage sleeves, and handle (6) is installed on the driving disc (21), and this handle (6) passes the side that slotted hole on the shell (1) is fixedly mounted on driving disc (21); The front end of helical spline shaft (3) is a polished rod, and driven disc (22) is sleeved on the front end of helical spline shaft (3) rotationally, and driven disc (22) is gone up fixedly connected live axle (4), and live axle (4) is installed in the end cap (5) on the shell (1); The terminal fixedly connected friction plate (8) of helical spline shaft (3) is equipped with platen (10) between the rear end cover (9) of this friction plate (8) and shell (1), between platen (10) and the rear end cover (9) platen spring (11) is installed.

2, automatic-clutching reversible ratchet wheel device according to claim 1, it is characterized in that: between friction plate (8) and driving disc (21), have dividing plate (12), this dividing plate (12) is fixedly connected on the inwall of shell (1), dividing plate has bearing hole on (12), in this bearing hole bearing is installed, helical spline shaft (3) is inserted in this bearing.