CN2886194Y

CN2886194Y - One-way clutch

Info

Publication number: CN2886194Y
Application number: CN 200620004937
Authority: CN
Inventors: 许天河
Original assignee: Lite On Technology Corp
Current assignee: Lite On Technology Corp
Priority date: 2006-03-22
Filing date: 2006-03-22
Publication date: 2007-04-04
Anticipated expiration: 2016-03-22

Abstract

The utility model relates to an one-way clutch comprising of power input elements having outer ring section, and power output elements which can rotately stretch into the axial part in the outer ring section, and torsion spring elements provided between the outer ring section and the axial part.The power input elements and the power output elements are provided in the same axle with a contact structure between them, thereby, the power input elements and output elements can rotate relatively and freely in a certain range and achieve the power transmission function.The contact structure includes the first contactor protruded on the inner wall of outer ring section and the second contactor protruded on the outside wall of the axial part, wherein the first contactor and the second contactor is mutual top contactely provided on the coaxal, and the torsion spring elements connect the power input elements and power output elements by supplying torsion, keeping them on the setted relative position. Thereby, an one-way clutch with less components, low cost and simple fixing process is assembled.

Description

Overrunning clutch

Technical field

The utility model relates to a kind of overrunning clutch, and particularly a kind of simplified style design can be applicable in various gear parts or the similar driving mechanism design, in order to the transmission whether overrunning clutch of control power.

Background technique

The major function of the overrunning clutch that is applied on the present most driving mechanism is and can imports the power that passes from power sources such as motors into executor, and when this power source stops to move, this overrunning clutch can cut off the Transmitted chains (wheel chain) between power source and executor, make this executor still can freely operate, and be not subjected to the influence of this power source and Transmitted chains.

See also Fig. 1, known driving mechanism comprises an executor 7, one first power source 8 and one second power source 9, this executor 7 is arranged between two

power sources

8 and 9, this executor 7 has four

gears

71,72,73 and 74, is used for transmission respectively to be arranged at four

cylinders

75,76,77 and 78 on the executor 7.

First power source 8 and second power source 9 are motor, and the power of this first power source 8 can be passed to gear 71 via a power input element (as gear) 81 and a power output element (as gear) 82, with head roll 75 rotations.When first power source 8 needs transferring power to give another cylinder 76, but these second power source, 9 drive actions devices, 7 rotations, make thus gear 72 can with power output element 82 engagement, with the transmission of power of first power source 8 to gear 72, thereby head roll 76 rotations.May command that the rest may be inferred to needed

cylinder

75,76,77 and 78, reaches the purpose of powershift with the transmission of power of first power source 8.

In above-mentioned powershift process, when gear 71～74 meshes with power output element 82 respectively, first power source 8 can stop operating, because the whole wheel chain of power output element 82 to first power sources 8 meshes, and the consideration of reduction speed ratio design, can make 82 of gear 71～74 and power output elements have a striking force to exist, gear 71～74 and power output element (gear) 82 must bear the engagement smoothly of this striking force, also therefore have the problem existence that gear is damaged.

In order to overcome this problem, general design is gone up and can install an overrunning clutch (one-way clutch) 6 between power input element 81 and power output element 82, as shown in Figure 2, when power input element 81 is docile and obedient the clockwise rotation, can be with transmission of power to power output element 82, make it comply with equidirectional rotation, and driven gear 71 is according to counterclockwise rotating.And at executor 7 according to rotation counterclockwise, when preparing powershift to gear 72, as shown in Figure 3, gear 72 can mesh to top offset and power output element 82, makes power output element 82 be docile and obedient the clockwise rotation simultaneously.This moment is because there is the effect of overrunning clutch 6, and this engagement must not overcome first power source 8 and resistance that wheel chain produced thereof.

As shown in Figure 4, it is a kind of known overrunning clutch (or claiming unilateral bearing), and when the main manner of execution of this overrunning clutch 6 counterclockwise rotated for complying with when outer shroud 61, ring 63 did not rotate in the friction element 62 in the middle of it can not drive.And when outer shroud 61 is docile and obedient the clockwise rotation (scheming slightly), ring 63 in the friction element 62 in the middle of it can withstand on moving direction, and then utilize frictional force therebetween to drive interior ring 63 according to equidirectional rotation.But this overrunning clutch needs more part and complicated assembly program, thereby it is higher to use the cost of this overrunning clutch.

As shown in Figure 5, it is another kind of known overrunning clutch, the main manner of execution of this overrunning clutch 6 is the gap that utilizes 651,661 designed not equidimensions of guide groove of ball 64 and outer shroud 65, interior ring 66, when ball 64 is subjected to gravity effect and when falling into the guide groove 651 of outer shroud 65, interior ring 66 when counterclockwise rotating can by promote ball 64 go again to promote outer shroud 65 rotate (or outer shroud 65 when rotating in a clockwise direction can by promote ball 64 go again to promote in ring 66 rotate).But this overrunning clutch must lean on the effect of gravity, therefore can't correct operation when horizontal positioned, and utilize the arrangement of ball 64 to come transmission to have hysteresis phenomenon in the transmission, the cost of ball 64 is not cheap yet in addition.

Summary of the invention

Main purpose of the present utility model is to provide a kind of overrunning clutch, and the part number that this overrunning clutch utilization is few is in needed specific action scope, reach the function of unidirectional delivery power, and can reduce cost, simplify assembling, but and correct operation all under any placement angle no matter.

To achieve the above object, the utility model provides a kind of overrunning clutch, and this overrunning clutch comprises: a power input element; One power output element, itself and this coaxial setting of power input element; One contact mechanism, it is arranged on coaxial between this power input element and this power output element; And a torsion resilient element pertaining, it can provide torsion ground to connect this power input element and this power output element.

In sum, the utility model provides a kind of overrunning clutch, and it comprises: a power input element, and it has an outer portion; One power output element, itself and this coaxial setting of power input element, and this power output element has an axial region, and this axial region stretches in this outer portion rotationally; One contact mechanism, it comprises one first contact and one second contact, this first contact is based in the inwall of this outer portion, this second contact is based in the outer wall of this axial region, and this first contact and this second contact contact mutually are arranged on coaxial between this power input element and this power output element contiguously; And a torsion resilient element pertaining, it is arranged between this outer portion and this axial region, and can provide torsion ground to connect this power input element and this power output element.

According to overrunning clutch of the present utility model, wherein second contact of first contact of this power input element and this power output element is respectively equipped with two.

According to overrunning clutch of the present utility model, wherein said two first contacts are arranged at the inwall of this power input element at interval in 180 degree, and described two second contacts are arranged at the outer wall of this power output element at interval in 180 degree.

According to overrunning clutch of the present utility model, wherein this torsion resilient element pertaining be installed on this power input element and this power output element on the coaxial axle, and an end of this torsion resilient element pertaining is fixed on this power input element, and the other end then contacts with this power output element.

According to overrunning clutch of the present utility model, wherein this torsion resilient element pertaining be installed on this power input element and this power output element on the coaxial axle, and an end of this torsion resilient element pertaining is fixed on this power output element, and the other end then contacts with this power input element.

According to overrunning clutch of the present utility model, wherein this power input element has one first gear part in addition, and this power output element has one second gear part.

In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet appended accompanying drawing only provide with reference to the usefulness of explanation, be not to be used for the utility model is limited.

Description of drawings

Fig. 1 is the stereogram of known driving mechanism.

Fig. 2 is the schematic representation () of known driving mechanism powershift process.

Fig. 3 is the schematic representation (two) of known driving mechanism powershift process.

Fig. 4 is the schematic representation of known overrunning clutch.

Fig. 5 is the schematic representation of another kind of known overrunning clutch.

Fig. 6 is the three-dimensional exploded view of the utility model overrunning clutch.

Fig. 7 is the stereogram of the utility model overrunning clutch.

Fig. 8 is the schematic representation () of the utility model overrunning clutch user mode.

Fig. 9 is the schematic representation (two) of the utility model overrunning clutch user mode.

Wherein, description of reference numerals is as follows:

1 power input element, 11 first gear part, 12 outer portion

13 first contacts, 2 power output elements, 21 second gear part

22 axial regions, 23 second contacts, 3 torsion resilient element pertaining

31 first ends, 32 the second ends, 4 executors

42 gears, 5 contact mechanisms, 6 overrunning clutchs

Ring in 61 outer shrouds, 62 friction elements 63

64 balls, 65 outer shrouds, 651 guide grooves

Ring 661 guide grooves 7 executors in 66

71 gears, 72 gears, 73 gears

74 gears, 75 cylinders, 76 cylinders

77 cylinders, 78 cylinders, 8 first power sources

81 power input elements, 82 power output elements, 9 second power sources

Embodiment

See also Fig. 6 and Fig. 7, the utility model provides a kind of overrunning clutch, this overrunning clutch includes a power input element 1, one power output element 2 and a torsion resilient element pertaining 3, this power input element 1 and power output element 2 are gear in the present embodiment, this power input element 1 has the outer portion 12 that one first gear part 11 and is extended to form by a side of this first gear part 11, this outer portion 12 is a hollow circular cylinder, its inwall is equipped with at least one first contact 13, be provided with two first contacts 13 that are oppositely arranged in the present embodiment, described two first contacts 13 are arranged at the inwall of outer portion 12 at interval in 180 degree.

This power output element 2 has the axial region 22 that one second gear part 21 and is extended to form by a side of this second gear part 21, this axial region 22 is a cylindrical body, the outer wall of this axial region 22 is equipped with at least one second contact 23, be provided with two second contacts 23 that are oppositely arranged in the present embodiment, described two second contacts 23 are arranged at the outer wall of axial region 22 at interval in 180 degree.The axial region 22 of this power output element 2 stretches in the outer portion 12 of power input element 1 rotationally, make this power input element 1 and power output element 2 form coaxial setting, power input element 1 can utilize first contact 13 to contact with second contact, the 23 mutual contacts of power output element 2, constitute a contact mechanism 5 that is arranged between power input element 1 and the power output element 2 with this, make two coaxial power input elements 1 and the power output element 2 can be as freely relatively rotating in a particular range, and power input element 1 and the feature of power output element 2 utilizations own are contacted and reach the function of power transmission, thereby can reach the function of overrunning clutch transferring power with this with the transmission of power of first power source (figure slightly) to executor (figure slightly).Be provided with two first contacts 13 and two second contacts 23 in the present embodiment, former power input element 1 and the power output element 2 of making can be as freely relatively rotating in nearly 180 degree scopes, but the structure of this contact mechanism 5 also can utilize other equivalent mechanism to replace this contact mechanism 5 not as limit.

This torsion resilient element pertaining 3 is an elastic element that torsion can be provided, its two ends have a first end 31 and a second end 32 respectively, this torsion resilient element pertaining 3 is installed between outer portion 12 and the axial region 22, make this torsion resilient element pertaining 3 be installed on power input element 1 and power output element 2 on the coaxial axle.This first end 31 is fixedly connected to power input element 1, and second contact 23 of 32 contacts of this second end power output element 2 makes torsion resilient element pertaining 3 can connect power input element 1 and power output element 2.But be not defined as the first end 31 that makes this torsion resilient element pertaining 3 and be fixedly connected on this power input element 1, can change the second end 32 that makes this torsion resilient element pertaining 3 into yet and be fixedly connected on this power output element 2.

The spring force of this torsion resilient element pertaining 3 is designed to can make power output element 2 and power input element 1 remain on the relative position place that sets as Fig. 7 when contacting with power output element 2 without any a gear in all gears of executor always.This position is first contact 13 and second contact 23 contacts with each other applying, can prepare at any time to import power in the executor (figure slightly) gear by first power source (figure slightly).Therefore the torque value of this torsion resilient element pertaining 3 element 2 that only needs to output power makes it rotate back to the position shown in Fig. 7 down to get final product non-loaded.

As shown in Figure 8, when power output element 2 with the process of executor 4 engagement in, the striking force that second gear part of gear 42 and power output element 2 is 21 only need overcome the torque spring value that sets and can successfully mesh, and this moment, the sense of rotation of power output element 2 was a clockwise direction.And when gear 42 through with the contact points of second gear part 21 of power output element 2 after when continuing to leave (as Fig. 9), this moment, torsion resilient element pertaining 3 can utilize the torsion of the setting element 2 that outputs power immediately to rotate back to the transmission position shown in above-mentioned Fig. 7.Therefore, even under the situation that executor 4 rotates continuously, gear constantly breaks away from again with power output element 2 engagements in regular turn, second contact 23 of this power output element 2 still can not remove first contact 13 of propulsion power input element 1, thereby can not make above-mentioned engagement action produce great resistance and then destroy gear because of affecting whole wheel chain.

The part number that the utility model utilization is few can reach the overrunning clutch function that is equal in the actuating range of design requirement.Advantage of the present utility model is and can reduces cost, and simplifies assembling, but and correct operation all under any placement angle no matter.

But the above only is preferred embodiment of the present utility model; be not to limit protection domain of the present utility model with this; so the equivalence that all utilization the utility model specifications and accompanying drawing content are done changes, and all in like manner is contained in the claimed scope of claims of the present utility model.

Claims

1, a kind of overrunning clutch is characterized in that, this overrunning clutch comprises:

One power input element, it has an outer portion;

One power output element, itself and this coaxial setting of power input element, and this power output element has an axial region, and this axial region stretches in this outer portion rotationally;

One contact mechanism, it comprises one first contact and one second contact, this first contact is based in the inwall of this outer portion, this second contact is based in the outer wall of this axial region, and this first contact and this second contact contact mutually are arranged on coaxial between this power input element and this power output element contiguously; And

One torsion resilient element pertaining, it is arranged between this outer portion and this axial region, and can provide torsion ground to connect this power input element and this power output element.

2, overrunning clutch as claimed in claim 1 is characterized in that, first contact of this power input element and second contact of this power output element are respectively equipped with two.

3, overrunning clutch as claimed in claim 2 is characterized in that, described two first contacts are arranged at the inwall of this power input element at interval in 180 degree, and described two second contacts are arranged at the outer wall of this power output element at interval in 180 degree.

4, overrunning clutch as claimed in claim 1, it is characterized in that, this torsion resilient element pertaining be installed on this power input element and this power output element on the coaxial axle, and an end of this torsion resilient element pertaining is fixed on this power input element, and the other end then contacts with this power output element.

5, overrunning clutch as claimed in claim 1, it is characterized in that, this torsion resilient element pertaining be installed on this power input element and this power output element on the coaxial axle, and an end of this torsion resilient element pertaining is fixed on this power output element, and the other end then contacts with this power input element.

6, overrunning clutch as claimed in claim 1 is characterized in that, this power input element has one first gear part in addition, and this power output element has one second gear part.

7, overrunning clutch as claimed in claim 6 is characterized in that, first contact of this power input element and second contact of this power output element are respectively equipped with two.

8, overrunning clutch as claimed in claim 7 is characterized in that, described two first contacts are arranged at the inwall of this power input element at interval in 180 degree, and described two second contacts are arranged at the outer wall of this power output element at interval in 180 degree.

9, overrunning clutch as claimed in claim 8, it is characterized in that, this torsion resilient element pertaining be installed on this power input element and this power output element on the coaxial axle, and an end of this torsion resilient element pertaining is fixed on this power input element, and the other end then contacts with this power output element.

10, overrunning clutch as claimed in claim 8, it is characterized in that, this torsion resilient element pertaining be installed on this power input element and this power output element on the coaxial axle, and an end of this torsion resilient element pertaining is fixed on this power output element, and the other end then contacts with this power input element.