CN202441765U

CN202441765U - One-way clutch

Info

Publication number: CN202441765U
Application number: CN2012200251985U
Authority: CN
Inventors: 江从寿
Original assignee: HAIMA BUSINESS AUTOMOBILE CO Ltd; HAIMA CAR CO Ltd
Current assignee: Hippocampal New Energy Automobile Co., Ltd.
Priority date: 2012-01-19
Filing date: 2012-01-19
Publication date: 2012-09-19
Anticipated expiration: 2022-01-19

Abstract

The utility model provides a one-way clutch. The one-way clutch comprises a fixed outer ring, a rotary inner core which can rotate along a given direction in the fixed outer ring and is coaxial with the fixed outer ring, a plurality of rolling elements which are distributed between the rotary inner core and the fixed outer ring at equal angles, and springs, centrifugal blocks and pin shafts which are in the same amount as that of the rolling elements. When the one-way clutch is operated, the friction between the rolling elements and the fixed outer ring does not always exist, so that the noise and the heat generated by friction of the one-way clutch during operation can be reduced, then the energy loss and the friction are reduced, and the service life is prolonged.

Description

Overrunning clutch

Technical field

The utility model relates to Clutch Technology, particularly a kind of overrunning clutch.

Background technique

Existing overrunning clutch generally includes an outer ring, an inner core and a plurality of rolling element.Wherein, inner core is positioned within the outer ring, also can within the outer ring, rotates along a predetermined single direction; A plurality of rolling elements then are arranged between inner core and the outer ring, also can between inner core and outer ring, roll along with the rotation of inner core.

Based on said structure; Existing overrunning clutch in the running; Rolling element can produce contact friction with inner core and outer ring all the time; Thereby cause a large amount of noises and heat to produce, and then the energy loss not only can cause the overrunning clutch operation time, also can cause wearing and tearing aggravation, the lost of life of overrunning clutch.

The field that such defective can cause overrunning clutch can't be applicable to transmission efficiency and travelling comfort having relatively high expectations, like automotive field.

The model utility content

In view of this, the utility model provides a kind of overrunning clutch.

A kind of overrunning clutch that the utility model provides; Comprise a fixed outer ring, can in fixed outer ring, be distributed in a plurality of rolling elements that rotate between inner core and the fixed outer ring, also comprise the spring identical, centrifugal and bearing pin with rolling element quantity along assigned direction rotation and with a coaxial rotation inner core and the equal angles of fixed outer ring;

The rotation inner core is distributed with the cell body identical with rolling element quantity near the outward edge equal angles of fixed outer ring, is placed with a rolling element in each cell body;

Sidewall, opposite side that one side of a rolling element of in each cell body, placing has with a die cavity are equiped with one centrifugal; Wherein, Be placed with a spring and this spring in the die cavity that sidewall had of each rolling element one side and when normality, push this rolling element contact fixed outer ring, one centrifugal of each rolling element opposite side is installed in through a bearing pin and rotates inner core and this centrifugal and rotating and can promote extruding and the disengaging fixed outer ring that this rolling element overcomes spring after the centrifugal force that produces is rocked to an angular deflection position with rotating inner core.

Preferably, rotate inner core and have hub body and sheet-type enclosure;

Cell body and the sidewall that has a die cavity are positioned at the end of the spoke of hub body;

Centrifugal and install in the centrifugal space of bearing pin between adjacent spoke;

And, but the gap of sheet-type enclosure between the adjacent spoke of correspondence offers the mounting hole that the supply and marketing axle is installed.

More preferably, be used to install that each bearing pin of centrifugal further is equiped with a torsion spring, this torsion spring can stop this centrifugal contact to rotate the hub body of inner core through torsion.

As above visible; Overrunning clutch in the utility model can be when rotating speed arrives certain numerical value; Rely on the centrifugal force that produces and centrifugal promotion rolling element and fixed outer ring are broken away from; Thereby make the overrunning clutch in the utility model can not have the friction between rolling element and the fixed outer ring all the time in the running; Thereby can reduce fricative in the running noise of overrunning clutch and heat, and then reduce energy loss and wearing and tearing and life-saving, be applicable to field that transmission efficiency and travelling comfort have relatively high expectations, like automotive field.

More preferably, the overrunning clutch in the utility model can also utilize torsion spring stop centrifugal with the collision of rotating inner core, thereby can avoid overrunning clutch in running because the noise that this collision caused.

Description of drawings

Fig. 1 is the partial sectional view of a kind of preferred structure of overrunning clutch among the utility model embodiment;

Fig. 2 is the partial sectional view of the rotation inner core of the overrunning clutch shown in Fig. 1;

Fig. 3 is the partial sectional view of a kind of more excellent structure of overrunning clutch among the utility model embodiment.

Embodiment

For the purpose, technological scheme and the advantage that make the utility model is clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, to the utility model further explain.

Fig. 1 is the partial sectional view of a kind of preferred structure of overrunning clutch among the utility model embodiment.

See also Fig. 1, the overrunning clutch in the present embodiment comprises: a fixed outer ring 1, is rotated inner core 2, three rolling elements 4.Wherein, this fixed outer ring 1 fixing installing, rotatable, this rotation inner core 2 can be along assigned direction rotation (being one-way rotation) and coaxial with fixed outer ring 1 in fixed outer ring 1, and three rolling element 4 equal angles are distributed in rotates between inner core 2 and the fixed outer ring 1.

Please again referring to Fig. 1, the overrunning clutch in the present embodiment also comprises: three springs 3, three centrifugal 5 and three bearing pins 6.

In the practical application, the quantity of rolling element 4 be not limited to three, can any amount a plurality of; Correspondingly, the quantity of spring 3, centrifugal 5 and bearing pin 6 also is not limited to three, and can be and the identical any number of rolling element 4 quantity.

Fig. 2 is the partial sectional view of the rotation inner core of the overrunning clutch shown in Fig. 1.Please in referring to Fig. 1, combine Fig. 2 again:

Rotate inner core 2 and be distributed with the cell body 2b with identical with rolling element 4 quantity (present embodiment is an example with three only), be placed with a rolling element 4 in each cell body 2b near the outward edge equal angles of fixed outer ring 1;

One side of a rolling element 4 of in each cell body 2b, placing has in the die cavity 2a that sidewall, this sidewall had with a die cavity 2a and is placed with a spring 3; And; One end of this spring 3 stretches in die cavity 2a, the other end stretches out outside die cavity 2a; Thereby this spring 3 can push this rolling element 4 contact fixed outer ring 1 when normality;

The opposite side of a rolling element 4 of in each cell body 2b, placing is equiped with one centrifugal 5; And; This centrifugal 5 through a bearing pin 6 be installed in rotate inner core 2, and can be around bearing pin 6 swings; Thereby this centrifugal 5 rotated after the centrifugal force that produces is rocked to an angular deflection position with rotating inner core 2, can promote this rolling element 4 and overcome the extruding of spring 3 and connect and break away from fixed outer ring 1.

In the present embodiment; Only be that inner core 2 has hub body (as show the sectional shape of hub body among Fig. 1 with section) and sheet-type enclosure (as the outer shape of sheet-type enclosure has been shown among Fig. 2) is an example to rotate; Correspondingly; Cell body 2b and the sidewall that has a die cavity 2a are positioned at the end of the spoke of hub body; Centrifugal 5 and be used to install centrifugal 5 bearing pin 6 then in the space between adjacent spoke, and, but the gap of sheet-type enclosure between the adjacent spoke of correspondence offers the mounting hole 2c that supply and marketing axle 6 is installed.Certainly, be not limited to this in the practical application.

Based on said structure:

When rotating inner core 2 when static, spring 3 is in the normal state, is in initial position for centrifugal 5, at this moment, and this rolling element 4 contact fixed outer ring 1 of spring 3 extruding;

When rotating inner core 2 along the assigned direction low speed rotation but the centrifugal force that rotation produces when big inadequately; Still be in initial position for centrifugal 5 and spring 3 still is in the normal state; At this moment; Spring 3 still squeezing roll kinetoplast 4 contacts fixed outer ring 1, makes rolling element 4 between rotation inner core 2 and fixed outer ring 1, roll and rub with rotation inner core 2 and fixed outer ring 1 along with the rotation of rotation inner core 2;

And when rotating centrifugal force that inner core 2 produces along assigned direction high speed rotating and rotation enough greatly the time; Centrifugal 5 in this action of centrifugal force lower swing to angular deflection position and at these angular deflection position promotion rolling element 4 pressure springs 3; Thereby can make rolling element 4 overcome the extruding of spring 3 and break away from fixed outer ring 1 this moment; So; Though rolling element 4 still rolls rotating between inner core 2 and the fixed outer ring 1 along with the rotation of rotating

inner core

2,4 this moments of rolling element can with fixed outer ring 1 friction, thereby can avoid rolling element 4 rotating inner core 2 when rotating and fixed outer ring 1 friction-produced noise and heat; And then not only can avoid the energy loss that causes thus, can also alleviate the wearing and tearing and the life-saving of overrunning clutch;

When rotating inner core 2 when having the reversal trend opposite with assigned direction, according to the overrunning clutch principle of routine, rolling element 4 can rotate stuck between inner core 2 and the fixed outer ring, to stop the reversal trend of rotation inner core 2.

As above visible; Overrunning clutch in the present embodiment can be when rotating speed arrives certain numerical value; Rely on the centrifugal force that produces and centrifugal 5 promotion rolling element 4 broken away from fixed outer ring 1; Thereby make the overrunning clutch in the present embodiment can not have the friction between rolling element 4 and the fixed outer ring 1 in the running all the time; Thereby can reduce fricative in the running noise of overrunning clutch and heat, and then reduce energy loss and wearing and tearing and life-saving, be applicable to field that transmission efficiency and travelling comfort have relatively high expectations, like automotive field.

See also Fig. 3; Overrunning clutch as shown in Figure 3 is than Fig. 1; Further be equiped with a torsion spring 7 for being used to install each bearing pin of centrifugal 56; The arbitrary position can be fixed in by any-mode in the two ends of this torsion spring 7, as long as can make this torsion spring 7 stop this centrifugal 5 contact to rotate the hub body of inner core 2 through torsion.

It is thus clear that overrunning clutch as shown in Figure 3 can also further be avoided centrifugal 5 noise that produces with the hub body collision of rotating inner core 2 except can producing the technique effect identical with overrunning clutch as shown in Figure 1.

The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the scope of the utility model protection.

Claims

1. overrunning clutch; It is characterized in that; Comprise a fixed outer ring, can in fixed outer ring, be distributed in a plurality of rolling elements that rotate between inner core and the fixed outer ring, also comprise the spring identical, centrifugal and bearing pin with rolling element quantity along assigned direction rotation and with a coaxial rotation inner core and the equal angles of fixed outer ring;

2. overrunning clutch according to claim 1 is characterized in that, rotates inner core and has hub body and sheet-type enclosure;

3. overrunning clutch according to claim 2 is characterized in that, is used to install that each bearing pin of centrifugal further is equiped with a torsion spring, this torsion spring can stop this centrifugal contact to rotate the hub body of inner core through torsion.