CN2433465Y

CN2433465Y - Intermittent driving device

Info

Publication number: CN2433465Y
Application number: CN 00221035
Authority: CN
Inventors: 刘宜贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-14
Filing date: 2000-07-14
Publication date: 2001-06-06
Anticipated expiration: 2010-07-14

Abstract

The utility model relates to an intermittent driving device, which is composed of an input shaft, a traveling nut, a casing and an output shaft. An outer ring and an inner ring in the traveling nut are provided with roller paths which form a rolling screw lead screw pair with the input shaft and the casing respectively. The input shaft is fixed in the casing by a bearing, and the output shaft is positioned on the other end of the casing, and is fixedly connected with the casing; a return spring is respectively arranged between both ends of the traveling nut and the bearing. Due to the fact that the utility model uses two sets of screw transmission mechanisms, the transmission ratio is big, which can reach 20 so that the bigger torque can be obtained. The utility model saves labor, and can increase the labor efficiency when used as a manual tool. The utility model has the advantages of simple structure, small size, and portability.

Description

A kind of intermittent transmission device

The utility model relates to a kind of mechanical transmission, specifically a kind of transmission device that increases moment of torsion.

Turning nut and use a kind of instrument---socket wrench is made up of sleeve, coupling rod and handle.Coupling rod because its velocity ratio is 1, can not increase moment of torsion as a transmission part, and socket wrench can only increase moment of torsion by increasing decreased food.And in actual the use, because the restriction of place and equipment, thereby, use both inconveniences, again than effort, labor intensity is big, inefficiency.

It is little that the purpose of this utility model provides a kind of volume, can increase the transmission device of moment of torsion.

The utility model intermittent transmission device is made up of input shaft, travelling nut, housing and output shaft, the outer raceway on the input shaft and the interior raceway of travelling nut and rolling element constitute the rolling screw lead screw pair, and by bearing fixing in housing, raceway and rolling element constitute the rolling screw lead screw pair in the outer raceway of travelling nut and the housing; Output shaft is positioned at the housing the other end, and is connected with housing; Returnning spring is housed respectively between travelling nut two ends and bearing.When input shaft clockwise or rotate counterclockwise, drive travelling nut and in housing, advance or retreat, thereby drive housing and output shaft clockwise or rotate counterclockwise, after the moment of torsion on the input shaft disappeared, travelling nut resetted rapidly under the effect of Returnning spring.Repeat said process for several times, can turn nut.

Because the utility model adopts two cover screw-drive mechanisms, thereby velocity ratio is big, can reach 20, can obtain bigger moment of torsion, when the coupling rod on the instead of sleeve spanner uses, not only laborsaving, the decreased food in the time of also can reducing to rotate, applied widely, simple in structure, volume is little, is easy to carry.

Fig. 1 is the utility model structural representation.

Fig. 2 is auxiliary afterburning coupling head structural representation.

Below in conjunction with accompanying drawing the utility model is done in detail:

By shown in Figure 1, in the travelling nut 8, have on the outer ring rotation direction identical in, outer raceway 15,16, the outer raceway 17 that matches with raceway 15 in the travelling nut 8 is arranged on the input shaft 1, the interior raceway that matches with travelling nut 8 outer raceways 16 is arranged on housing 12 inwalls, travelling nut connects with the rolling screw lead screw pair respectively with input shaft and housing, raceway 15, rolling element 6 is arranged in 16, input shaft 1 is by tapered roller bearing 4,10 are fixed in the housing, in the housing in bearing 4 outsides of input shaft end thrust pad 3 is housed, the outer end of bearing 10 has output shaft 14 to be connected by lock pin 11 and housing 12, the housing two ends are provided with jump ring groove 2,13, locate at two ends by jump ring.Between the two ends of travelling nut 8 and the bearing 4,10 Returnning spring 5,9 is housed respectively.Have lockpin hole in the middle of the housing 12, be equipped with in the hole and force lock pin 7, when travelling nut moves on to the final position to the left or to the right, its right-hand member or left end can just in time be positioned at lockpin hole one side, screw off and force lock pin 7 to be located, input shaft can directly drive output shaft and rotate, and making its velocity ratio is 1.

The utility model is when the bigger moment of torsion of needs, can adopt auxiliary afterburning coupling head, as shown in Figure 2, this connects first end counterbore 18 with output shaft 14 coupling head form fit, the other end has output coupling head 20, there is the through hole vertical with output shaft 19 centre, extension lever is inserted can cooperate with said apparatus in the through hole 19 increase moment of torsion.

Claims

1, a kind of intermittent transmission device, form by input shaft, travelling nut, housing and output shaft, it is characterized in that having the identical inside and outside raceway of rotation direction on the inside and outside circle of travelling nut, outer, the interior raceway that cooperate with the inside and outside raceway of travelling nut are arranged respectively on input shaft and the housing; Housing one end and output shaft fixed connection, the outer raceway on the input shaft and the interior raceway of travelling nut and rolling element constitute the rolling screw lead screw pair, and by bearing fixing in housing; The outer raceway of travelling nut and the interior raceway of housing and rolling element constitute the rolling screw lead screw pair; Returnning spring is housed respectively between travelling nut two ends and the bearing.

2, transmission device according to claim 1 is characterized in that having lockpin hole in the middle of the housing, and the pressure lock pin is housed in the hole, and when travelling nut moved to the final position to the left or to the right, its right-hand member or left end were positioned at lockpin hole one side, can be by forcing the lock pin location.

3, transmission device according to claim 1 and 2 is characterized in that also comprising an auxiliary afterburning coupling head, and the first end of described connection has the counterbore with output shaft coupling head form fit, and the other end has the output coupling head, and there is the through hole vertical with output shaft the centre.