CN202381584U - Overrunning coupler for electric push rod - Google Patents
Overrunning coupler for electric push rod Download PDFInfo
- Publication number
- CN202381584U CN202381584U CN2011204759874U CN201120475987U CN202381584U CN 202381584 U CN202381584 U CN 202381584U CN 2011204759874 U CN2011204759874 U CN 2011204759874U CN 201120475987 U CN201120475987 U CN 201120475987U CN 202381584 U CN202381584 U CN 202381584U
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- transmission
- driving shaft
- steel ball
- internal spline
- wheel device
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Abstract
The utility model discloses an overrunning coupler for an electric push rod. The overrunning coupler comprises a driving shaft, a driven shaft, a connecting sleeve and an inner spline, wherein the connecting sleeve and the inner spline are movably connected circumferentially; the driving shaft is used for realizing transmission of the connecting sleeve and the inner spline through a first transmission component; the inner spline is connected with an outer spline; the outer spline is used for realizing transmission of the driven shaft through a second transmission component; the first transmission component comprises a transmission steel ball arranged on the end part of the driving shaft; both the connecting sleeve and the inner spline are provided with inner holes which correspond to the transmission steel ball; the connecting sleeve and the inner spline move axially, so that the transmission steel ball is positioned in the inner hole of the connecting sleeve or the inner hole of the inner spline; the bottom end of the transmission steel ball is pressed against the driving shaft; and the top end of the transmission steel ball is pressed against the inner hole wall of the connecting sleeve or the inner hole wall of the inner spline to realize transmission. Due to the adoption of the overrunning coupler, separation and combination can be realized stably and reliably, and a rapid releasing function can be realized in a separated state.
Description
Technical field
The utility model relates to a kind of electric pushrod and uses free wheel device.
Background technique
Free wheel device is the basic part that occurs along with the development of electromechanical integrated product, and it is to be used between prime mover and the working machine or the vitals of transmission of power and separation function between machine intimate driving shaft and the driven shaft.It is the conversion that utilizes the velocity variations or the sense of rotation of driving and driven part, has the device of clutch function voluntarily.
China national Department of Intellectual Property has announced name on March 24th, 2010 and has been called clutch, and notification number is the utility model patent of CN201428756, and it relates to the clutch that electric pushrod uses; Comprise thimble, follower, drive plate, gear ring, driving wheel, drive plate is installed within the gear ring, two element coaxials; Drive plate circumferencial direction equal intervals has groove; Thimble is installed among these grooves, and the thimble inboard is follower and driving wheel, and the outside is a gear ring.Its transmission is spacing, locking device by thimble, follower-splined cover, drive plate, gear ring, driving wheel-planetary wheel carrier I totally 5 component form; Drive plate is installed within the gear ring, two element coaxials, and drive plate circumferencial direction equal intervals has groove, and thimble is installed among these grooves, and the thimble inboard is follower and driving wheel, and the outside is a gear ring; Follower and driving wheel can freely separate, fit and each and drive plate between have several angle at interval; It can be used for having forward and reverse rotation transmission requirement, and follower self counterrotating can be by the thimble limitation locking.
Existing electric pushrod is a so-called quick release device on the push rod with clutch, is for satisfying push rod under outage or improper damaged condition, a kind of protective gear that push rod is discharged by high point (being the maximum rating of push rod stroke).Existing " pin axle type " clutch (6 straight pins, 12 pin-and-holes) is main to be existed: during push rod heavy load state; The power of stirring during disengaging is big, when closing because of with the pin-and-hole quick rotation of limit part mutually, cause the state that is difficult for closing; Influence product stability, and operation the time there is mechanical collision noise.
The model utility content
The purpose of the utility model is to provide electric pushrod to use free wheel device, can solve effectively existing electric pushrod with the pin axle type clutch when the push rod heavy load, stir power during disengaged position greatly and the problem that is difficult for closing.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme:
Electric pushrod is used free wheel device; Comprise driving shaft and driven shaft; It is characterized in that: free wheel device also comprises the joint sleeve and the internal spline of circumferential flexible connection; Driving shaft is realized the transmission to joint sleeve and internal spline through first transmission part, and internal spline connects external splines, and external splines is realized the transmission to driven shaft through second transmission part.
Further; First transmission part comprises the transmission steel ball of the end that is located at driving shaft; Joint sleeve and internal spline are equipped with the endoporus corresponding with the transmission steel ball, and joint sleeve and internal spline move axially, and make the transmission steel ball be arranged in the endoporus of joint sleeve or the endoporus of internal spline; The bottom of transmission steel ball props up driving shaft, and the top of transmission steel ball props up the inner hole wall of joint sleeve or the inner hole wall of internal spline is realized transmission.
Further, the end of driving shaft is provided with limit sliding chutes, and the transmission steel ball is located in the limit sliding chutes.
Preferably, the bottom of restraining groove is the plane, can realize bidirectional overtaking clutch operation.
Further, internal spline outer wall circumference is provided with restraining groove, and joint sleeve is provided with the spacing preiection corresponding with restraining groove.
Preferably, second transmission part is the flat key that is located between external splines and the driven shaft.
Further, be provided with thrust ball bearing between driving shaft and the external splines, thrust ball bearing is located on the driven shaft, and during because of push rod heavy load state, axial force is bigger, and thrust ball bearing can be with bigger axial force.
Further, be provided with oil-impregnated bearing between thrust ball bearing and the driving shaft, oil-impregnated bearing is located on the driven shaft; Under the push rod heavy load state, axial force is mainly shared by thrust ball bearing, and oil-impregnated bearing can play " centering " effect, prevents screw mandrel tail end product journal offset phenomenon, causes push rod to discharge the inflexible defective of assembling.
The utility model has following beneficial effect owing to adopted technique scheme: can realize the clutch operation (discharging fast) that the push rod push-pull effort is two-way, realize advantages such as push rod is steady, reliable, easy to operate; Simultaneously this clutch have that transmitting torque is big, smooth engagement, noise free, the state that rotates in main driven shaft adjustment advantage such as realization joint down.The utility model is simple in structure, manufacturing is easy, cost is low, practical.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the explosive view during with the combination of free wheel device for the utility model electric pushrod;
Fig. 2 is the sectional view during with the combination of free wheel device for the utility model electric pushrod;
Fig. 3 is the explosive view during with the separation of free wheel device for the utility model electric pushrod;
Fig. 4 is the sectional view during with the separation of free wheel device for the utility model electric pushrod;
Fig. 5 be in the utility model electric pushrod with the external structure of free wheel device when separating;
Fig. 6 be in the utility model electric pushrod with the external structure of free wheel device when combining;
Fig. 7 is that K among Fig. 6 is to structural representation.
Embodiment
Extremely shown in Figure 7 like Fig. 1; For the utility model electric pushrod is used free wheel device, be the two-way type roller-type overrunning clutch, comprise driving shaft 1 and driven shaft 2; Free wheel device also comprises the joint sleeve 3 and internal spline 4 of circumferential flexible connection; Driving shaft 1 is realized the transmission to joint sleeve 3 and internal spline 4 through first transmission part, and internal spline 4 connects external splines 5, and external splines 5 is realized the transmission to driven shaft 2 through second transmission part.First transmission part comprises the transmission steel ball 11 of the end that is located at driving shaft 1; Joint sleeve 3 and internal spline 4 are equipped with the endoporus corresponding with transmission steel ball 11; Joint sleeve 3 moves axially with internal spline 4; Make transmission steel ball 11 be arranged in the endoporus 31 of joint sleeve 3 or the endoporus 41 of internal spline 4, the bottom of transmission steel ball 11 props up driving shaft 1, and the top of transmission steel ball 11 props up the inner hole wall of joint sleeve 3 or the inner hole wall of internal spline 4 is realized transmission.The end of driving shaft 1 is provided with limit sliding chutes 12, and transmission steel ball 11 is located in the limit sliding chutes 12, and the bottom of limit sliding chutes 12 is the plane.Internal spline 4 outer wall circumference are provided with restraining groove 42, and joint sleeve 3 is provided with the spacing preiection 32 corresponding with restraining groove 42, and spacing preiection 32 is embedded in the restraining groove 42, realize in the axial direction fixing of internal spline 4 and joint sleeve 3 and realize that both axially are synchronized with the movement.Second transmission part is the flat key 6 that is located between external splines 5 and the driven shaft 2.Be provided with thrust ball bearing 7 between driving shaft 1 and the external splines 5, thrust ball bearing 7 is located on the driven shaft 2, is provided with oil-impregnated bearing 8 between thrust ball bearing 7 and the driving shaft 1, and oil-impregnated bearing 8 is located on the driven shaft 2.
The utility model free wheel device is applied to the working procedure in the electric pushrod:
Normal working: motor (not drawing in the accompanying drawing) energising operation, drive driving shaft 1 through deceleration part, realize forward and reverse rotation of driving shaft 1, driving shaft 1 connects through the endoporus 41 of transmission steel ball 11, internal spline 4, realizes the transmission of power.Internal spline 4 connects through " spline " with external splines 5, realizes the synchronous output of power, and external splines 5 connects with driven shaft 2 through parallel key 6, drives the output mechanism of push rod, realizes the normal push-and-pull work of push rod.
Quick releasing state: internal spline 4 moves to leftward position through toggle mechanism (not drawing in the accompanying drawing), and this moment, the endoporus 31 of joint sleeve 3 connected with the transmission steel ball 11 of driving shaft 1 front end; Import by driving shaft 1 when power, carry out transferring power through transmission steel ball 11, joint sleeve 3, because of being in circumferential activity coupled situation between internal spline 4 and the joint sleeve 3, so power can not be delivered on the driven shaft 2 through internal spline 4.Output mechanism is under load condition at this moment, and the unpowered input in rear end under the load active force, drives external spliness 5, internal spline 4 etc. through driven shaft 2, realizes the function that discharges fast.
More than be merely the specific embodiment of the utility model, but the technical characteristics of the utility model is not limited thereto.Any is the basis with the utility model, for realizing essentially identical technique effect, has done the ground simple change, has been equal to replacement or modification etc., all is covered by among the protection domain of the utility model.
Claims (8)
1. electric pushrod is used free wheel device; Comprise driving shaft (1) and driven shaft (2); It is characterized in that: said free wheel device also comprises the joint sleeve (3) and the internal spline (4) of circumferential flexible connection; Said driving shaft (1) is realized the transmission to said joint sleeve (3) and said internal spline (4) through first transmission part, and said internal spline (4) connects external splines (5), and said external splines (5) is realized the transmission to said driven shaft (2) through second transmission part.
2. electric pushrod according to claim 1 is used free wheel device; It is characterized in that: said first transmission part comprises the transmission steel ball (11) of the end that is located at said driving shaft (1); Said joint sleeve (3) and said internal spline (4) are equipped with the endoporus corresponding with said transmission steel ball (11) (31,41); Said joint sleeve (3) and said internal spline (4) move axially; Make said transmission steel ball (11) be arranged in the endoporus (31) of said joint sleeve (3) or the endoporus (41) of said internal spline (4); The bottom of said transmission steel ball (11) props up said driving shaft (1), and the top of said transmission steel ball (11) props up the inner hole wall of said joint sleeve (3) or the inner hole wall of said internal spline (4) is realized transmission.
3. electric pushrod according to claim 2 is used free wheel device, it is characterized in that: the end of said driving shaft (1) is provided with limit sliding chutes (12), and said transmission steel ball (11) is located in the said limit sliding chutes (12).
4. electric pushrod according to claim 3 is used free wheel device, it is characterized in that: the bottom of said limit sliding chutes (12) is the plane.
5. electric pushrod according to claim 2 is used free wheel device, it is characterized in that: the outer wall circumference of said internal spline (4) is provided with restraining groove (42), and said joint sleeve (3) is provided with the spacing preiection (32) corresponding with said restraining groove (42).
6. electric pushrod according to claim 1 is used free wheel device, it is characterized in that: said second transmission part is for being located at the flat key (6) between said external splines (5) and the driven shaft (2).
7. electric pushrod according to claim 1 is used free wheel device, it is characterized in that: be provided with thrust ball bearing (7) between said driving shaft (1) and the said external splines (5), said thrust ball bearing (7) is located on the said driven shaft (2).
8. electric pushrod according to claim 7 is used free wheel device, it is characterized in that: be provided with oil-impregnated bearing (8) between said thrust ball bearing (7) and the said driving shaft (1), said oil-impregnated bearing (8) is located on the said driven shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204759874U CN202381584U (en) | 2011-11-25 | 2011-11-25 | Overrunning coupler for electric push rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204759874U CN202381584U (en) | 2011-11-25 | 2011-11-25 | Overrunning coupler for electric push rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381584U true CN202381584U (en) | 2012-08-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204759874U Expired - Fee Related CN202381584U (en) | 2011-11-25 | 2011-11-25 | Overrunning coupler for electric push rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381584U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494051A (en) * | 2011-11-25 | 2012-06-13 | 浙江捷昌线性驱动科技股份有限公司 | Overrunning clutch for power-driven push rod |
| CN107314090A (en) * | 2017-07-04 | 2017-11-03 | 浙江捷昌线性驱动科技股份有限公司 | It is a kind of can bidirectional self-locking electric pushrod |
| WO2018040284A1 (en) * | 2016-08-31 | 2018-03-08 | 浙江捷昌线性驱动科技股份有限公司 | Electric pushing rod |
-
2011
- 2011-11-25 CN CN2011204759874U patent/CN202381584U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494051A (en) * | 2011-11-25 | 2012-06-13 | 浙江捷昌线性驱动科技股份有限公司 | Overrunning clutch for power-driven push rod |
| CN102494051B (en) * | 2011-11-25 | 2013-07-17 | 浙江捷昌线性驱动科技股份有限公司 | Overrunning clutch for power-driven push rod |
| WO2018040284A1 (en) * | 2016-08-31 | 2018-03-08 | 浙江捷昌线性驱动科技股份有限公司 | Electric pushing rod |
| US20190195323A1 (en) * | 2016-08-31 | 2019-06-27 | Zhejiang Jiecang Linear Motion Technology Co., Ltd . | Electric linear actuator |
| US11015686B2 (en) | 2016-08-31 | 2021-05-25 | Zhejiang Jiecang Linear Motion Technology Co., Ltd . | Electric linear actuator |
| CN107314090A (en) * | 2017-07-04 | 2017-11-03 | 浙江捷昌线性驱动科技股份有限公司 | It is a kind of can bidirectional self-locking electric pushrod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20131125 |