CN106979251A - Hand wheel clutch for machinery - Google Patents

Abstract

A handwheel clutch for machinery mainly includes a handwheel fixing unit and a clutch unit. The handwheel fixing unit has a shaft sleeve and a nut provided on the shaft sleeve. The shaft sleeve has an outer ring tooth portion. , the clutch unit has a clutch piece, the clutch piece is movably sleeved on the shaft sleeve and has an inner ring tooth portion. When the clutch piece is in a first position, the inner ring tooth portion of the clutch piece and the outer ring teeth of the shaft sleeve The parts are disengaged from each other, so that the clutch part cannot drive the shaft sleeve to rotate. When the clutch part is in a second position, the inner ring tooth part of the clutch part engages with the outer ring tooth part of the shaft sleeve, so that the clutch part can synchronously drive the shaft sleeve. The sleeve rotates, thus providing a clutch effect to the hand wheel.

Description

Handwheel clutches for machinery

technical field

The invention relates to a clutch for machinery, in particular to a handwheel clutch for machinery.

Background technique

General processing tools usually need to manually drive the handwheel to rotate before using the tool to process the workpiece, so that the handwheel can feed the working platform to the appropriate processing position through the handwheel shaft during the rotation process, but the handwheel and the handwheel There is no clutch design between the wheel shafts in the traditional structural configuration, so that the hand wheel is easily collided by people around, which will cause the offset of the working platform and affect the machining accuracy.

In order to solve the above problems, the patent application No. M492221 of Taiwan, China is to use the control part to control the clutch effect between the operation wheel and the shaft tube. When the control part is pulled, the control part will first drive the insertion rod to move axially, and then The movable block is driven by the plunger to move towards the positioning block, so that the movable block and the positioning block are engaged together. At this time, the operating wheel can drive the axis tube to rotate. The thrust makes the movable block and the positioning block separate from each other, and the operating wheel at this time can only rotate freely relative to the axis tube. However, the above-mentioned prior art patent application has too many structural components, so in addition to increasing the processing cost, it will also cause problems such as difficult assembly and difficult maintenance.

Contents of the invention

The technical problem to be solved by the present invention is to provide a handwheel clutch for machinery, which has the characteristics of simple structure and convenient assembly, and can provide stable and good clutch effect.

In order to achieve the above object, the present invention provides a handwheel clutch, which includes a handwheel fixing unit and a clutch unit. The handwheel fixing unit has a shaft sleeve and at least one nut. The shaft sleeve has at least one external thread portion and an outer ring tooth portion. There is a predetermined distance between the outer ring tooth portion and the external thread portion. The nut The cap has an inner screw hole, and the nut is screwed on the outer threaded part of the shaft sleeve through the inner screw hole, so as to fix the shaft sleeve to a handwheel shaft; the clutch unit has a clutch part and a reset elastic part , the clutch part is used for assembly of a handwheel, and the clutch part has a set of holes and an inner ring tooth part, the set hole is sleeved on the shaft sleeve, and the inner ring tooth part is set on the hole wall of the set hole , the return elastic member is sleeved on the shaft sleeve and pushed against the inner ring gear of the clutch member.

Thereby, when the clutch part is in a first position, the inner ring gear of the clutch part and the outer ring gear part of the bushing are disengaged from each other, and at this time the clutch part can rotate idly relative to the bushing, so that the The handwheel cannot drive the handwheel shaft to rotate. When the clutch is in a second position, the inner ring gear of the clutch engages with the outer ring gear of the bushing. Rotate synchronously, so that the hand wheel can drive the hand wheel shaft to rotate.

Technical effect of the present invention is:

The handwheel clutch of the present invention utilizes the meshing relationship between the inner ring gear of the clutch part and the outer ring gear of the shaft sleeve to achieve the clutch effect between the handwheel and the handwheel shaft. Compared with the prior art, this On the one hand, the invention can effectively simplify the structure to reduce the processing cost and facilitate subsequent assembly; on the other hand, it can provide a very stable clutch effect in operation, thereby achieving the purpose of the present invention.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is a perspective view of the present invention;

Fig. 2 is the three-dimensional exploded view of the present invention;

Fig. 3 is a cross-sectional view of the present invention, mainly showing the state that the clutch is in the first position;

Fig. 4 is a cross-sectional view of the present invention, mainly showing the state of the clutch part in the second position.

Among them, reference signs

10 Handwheel clutch 12 Handwheel shaft

14 Handwheel 20 Handwheel fixing unit

21 Bushing 22 External thread

23 Outer ring gear 24 Split groove

25 Nut 30 Clutch unit

31 Clutch 32 Flat key

33 Perforation P1 1st position

P2 Second position 34 Inner ring teeth

35 Bearing 36 Resetting elastic member

37 fixed ring 38 movable ring

39 C-ring

detailed description

Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:

Referring to FIGS. 1 and 2 , the handwheel clutch 10 for machinery of the present invention includes a handwheel fixing unit 20 and a clutch unit 30 .

The handwheel fixing unit 20 has a shaft sleeve 21 and two nuts 25 , wherein the shaft sleeve 21 is used to be sleeved on a handwheel shaft 12 (as shown in FIG. 3 ). Both ends of the shaft sleeve 21 have an external thread portion 22 respectively, and the outer peripheral surface of the shaft sleeve 21 has an outer ring tooth portion 23, and the outer ring tooth portion 23 is interposed between the two external thread portions 22; each nut 25 The screw is arranged on the external thread portion 22 of the shaft sleeve 21 , thereby, when the shaft sleeve 21 is sleeved on the handwheel shaft 12 and then the nut 25 is locked, the shaft sleeve 21 and the handwheel shaft 12 can be fixed together. In addition, the external thread portion 22 of the shaft sleeve 21 also has four split grooves 24 (in fact, at least one is sufficient). With the arrangement of the split grooves 24, the external thread portion 22 of the shaft sleeve 21 will be Radial deformation is further generated, so that the shaft sleeve 21 can increase the fixing effect between the shaft sleeve 21 and the handwheel shaft 12 .

The clutch unit 30 has a clutch part 31, the clutch part 31 is used for a handwheel 14 sleeve (as shown in Figure 3) and is fixed together with the handwheel 14 by a flat key 32, in addition, the clutch part 31 has a set of holes 33. The clutch part 31 is sleeved on the shaft sleeve 21 through the sleeve hole 33, so that the clutch part 31 can be at a first position P1 (as shown in FIG. 3 ) and a first position relative to the shaft sleeve 21 along the axial direction of the shaft sleeve 21. Displacement between two positions P2 (as shown in FIG. 4 ). The clutch part 31 has an inner ring tooth part 34, and the inner ring tooth part 34 is arranged on the hole wall of the sleeve hole 33. When the clutch part 31 is in the first position P1 as shown in FIG. 3, the inner ring tooth part of the clutch part 31 34 and the outer ring gear 23 of the shaft sleeve 21 are disengaged from each other. When the clutch 31 is in the second position P2 shown in FIG. 4 , the inner ring gear 34 of the clutch 31 engages with the outer ring tooth part 23 . As shown in FIG. 3 , a bearing 35 is provided between the clutch member 31 and the bushing 21 . When the clutch member 31 is at the first position P1 , the clutch member 31 can freely rotate relative to the bushing 21 through the bearing 35 . In addition, the clutch unit 30 also has a reset elastic member 36, a fixed ring 37, and a movable ring 38, the reset elastic member 36 is sleeved on the shaft sleeve 21 and is located in the sleeve hole 33 of the clutch member 31, and the fixed ring 37 is sleeved One end of the shaft sleeve 21 and abutted against the reset elastic member 36, so that the fixed ring 37 is pushed by the reset elastic member 36 and abuts against a C-shaped buckle 39 fixed on the shaft sleeve 21, and the movable ring 38 is sleeved on the The sleeve 21 abuts against the other end of the restoring elastic member 36 , so that the movable ring 38 is pushed up by the restoring elastic member 36 and abuts against the inner ring tooth portion 34 of the clutch member 31 .

It can be seen from the above structure that when the handwheel 14 is to be able to drive the handwheel shaft 12 to rotate, the clutch member 31 is first pulled from the first position P1 as shown in FIG. 3 to the second position P2 as shown in FIG. 4 . When the part 31 is located at the second position P2, the inner ring gear part 34 of the clutch part 31 will engage with the outer ring gear part 23 of the bushing 21, and the hand wheel 14 can pass between the clutch part 31 and the bushing 21 at this time. The meshing relationship drives the handwheel shaft 12 to rotate together. In addition, when the clutch member 31 moves toward the second position P2, the inner ring tooth portion 34 of the clutch member 31 simultaneously pushes the movable ring 38, so that the movable ring 38 compresses the return elastic member 36 and accumulates the elastic force of the return elastic member 36.

If the transmission relationship between the handwheel 14 and the handwheel shaft 12 is to be released, as long as the pulling force applied to the clutch part 31 is released, the clutch part 31 can automatically return to the position shown in Figure 3 by the elastic force of the reset elastic part 36. The first position P1 of the clutch part 31 makes the inner ring tooth part 34 of the clutch part 31 disengage from the outer ring tooth part 23 of the shaft sleeve 21. In this way, by virtue of the idling of the clutch part 31 relative to the shaft sleeve 21, the handwheel 14 is driven Can't drive hand wheel shaft 12 to rotate synchronously in the process of driving.

To sum up, the handwheel clutch 10 of the present invention utilizes the meshing relationship between the inner ring tooth portion 34 of the clutch member 31 and the outer ring tooth portion 23 of the bushing 21 to achieve the engagement between the hand wheel 14 and the hand wheel shaft 12. Clutch effect, so compared with the prior art, the present invention can effectively simplify the structure and reduce the processing cost and facilitate subsequent assembly on the one hand, on the other hand, it can provide a very stable clutch effect in operation, and then achieve the present invention the goal of.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should all belong to the protection scope of the appended claims of the present invention.

Claims (4)

1. a kind of be used for the handwheel clutch of machinery, it is characterised in that includes：

One handwheel fixed cell, with an axle sleeve and an at least nut, the axle sleeve has an at least external thread part and an outer shroud tooth Portion, the nut spiral shell is located at the external thread part of the axle sleeve；And

One clutch unit, with a clutch part and a return springs, the clutch part has a set of hole, and the clutch part is by the set Hole can be sheathed on rotationally and movably the axle sleeve between a first position and a second place, and the clutch part has in one Circular tooth part, the inner ring teeth portion is located at the hole wall in the set hole, when the clutch part is located at the first position, the inner circular tooth of the clutch part It is mutually disengaged between portion and the outer circular tooth part of the axle sleeve, the clutch part is rotated relative to the axle sleeve, is somebody's turn to do when the clutch part is located at During the second place, the inner ring teeth portion bridle joint of the clutch part enables the clutch part to drive the axle sleeve to turn in the outer circular tooth part of the axle sleeve Dynamic, the return springs are sheathed on the axle sleeve and ejection is in the inner ring teeth portion of the clutch part, to provide elastic force by the clutch part It is maintained at the first position.

2. as claimed in claim 1 be used for the handwheel clutch of machinery, it is characterised in that the two ends of the axle sleeve have one respectively The external thread part, the outer circular tooth part is between two external thread part, and the number of the nut is two, and two nut is distinguished spiral shell and is located at The external thread part of the axle sleeve.

3. as claimed in claim 1 be used for the handwheel clutch of machinery, it is characterised in that the external thread part of the axle sleeve has extremely A few profile groove, enables the external thread part of the axle sleeve to produce radial deformation by the profile groove.

4. as claimed in claim 1 be used for the handwheel clutch of machinery, it is characterised in that the clutch unit also has one to fix Ring and a loose collar, the retainer ring are located at the axle sleeve and are connected to one end of the return springs, and the loose collar movably covers Located at the axle sleeve and it is connected between the other end of the return springs and the inner ring teeth portion of the clutch part.