KR20140085090A - Parking apparatus for automatic transmission - Google Patents
Parking apparatus for automatic transmission Download PDFInfo
- Publication number
- KR20140085090A KR20140085090A KR1020120155279A KR20120155279A KR20140085090A KR 20140085090 A KR20140085090 A KR 20140085090A KR 1020120155279 A KR1020120155279 A KR 1020120155279A KR 20120155279 A KR20120155279 A KR 20120155279A KR 20140085090 A KR20140085090 A KR 20140085090A
- Authority
- KR
- South Korea
- Prior art keywords
- parking
- sprag
- parking gear
- projection member
- automatic transmission
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/005—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles by locking of wheel or transmission rotation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
Description
BACKGROUND OF THE
Generally, the automatic transmission is equipped with a parking device that locks the parking gear provided on the output shaft in the "P" (Parking Range) range by sprags to maintain the vehicle in a stopped state.
When the select lever provided on the vehicle is converted into the "P" range, the control lever, the select shaft, and the detent lever associated therewith rotate integrally to push the parking rod, do.
Since one end of the sprag is rotatably installed on the sprag shaft, when the parking rod moves and contacts the sprag, the sprag rotates about the sprag shaft.
As a result, the sprag projections integrally provided in the sprags are inserted and engaged with the gears of the parking gear, thereby locking the automatic transmission.
BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 2009-0111961 (published on October 28, 2009, entitled "Parking Device for Automatic Transmission").
Since the number of sprocket projections connected to the sprocket is one, when the weight of the vehicle is increased, the capacity of the parking gear for the automatic transmission is insufficient and the operational reliability is lowered. Therefore, there is a need to improve this.
It is an object of the present invention to provide a parking apparatus for an automatic transmission that is capable of improving the operational reliability of an automatic transmission by increasing the braking force of the automatic transmission.
A parking device for an automatic transmission according to the present invention includes: a parking rod that linearly moves in conjunction with a change of select lever; a sprocket that is rotatably installed in the transmission housing and is rotated in a direction in which a parking gear is pushed by the parking rod; And a second projection member protruding from a side surface of the sprag opposite to the gear to engage with the parking gear, and a second projection member protruding from the side surface of the sprag member spaced apart from the first projection member and engaged with the parking gear.
The parking rod preferably includes a rod body that is linearly moved toward a direction in which the sprag is installed, and a cap member that has a wedge-shaped sloped surface and is mounted on the tip of the rod body.
The sprags preferably include a body portion hinged to the transmission housing by a sprag shaft and contact protrusions extending from the body portion and located in a path through which the cap member is moved.
It is preferable that the first projection member and the second projection member protrude from the side of the body portion facing the parking gear.
The distance between the first projection member and the second projection member preferably corresponds to the width of the engagement tooth provided on the outside of the parking gear.
It is also preferable that the first projection member and the second projection member are provided along the same circumferential shape as the outer periphery of the parking gear.
In the parking device for an automatic transmission according to the present invention, the first projection member and the second projection member engage with the parking gear in association with the movement of the parking rod, thereby increasing the braking force of the automatic transmission. The operation reliability of the automatic transmission can be improved.
1 is an internal configuration diagram of a parking apparatus for an automatic transmission according to an embodiment of the present invention.
2 is an enlarged cross-sectional view of the portion "A" in Fig.
3 is a cross-sectional view schematically showing a state in which the first projection member and the second projection member are engaged with the parking gear according to an embodiment of the present invention.
4 is a perspective view schematically showing a sprag according to an embodiment of the present invention.
Hereinafter, an embodiment of a parking apparatus for an automatic transmission according to the present invention will be described with reference to the accompanying drawings. For convenience of explanation, a parking apparatus for an automatic transmission installed in a vehicle will be described as an example. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.
FIG. 1 is an internal configuration diagram of a parking apparatus for an automatic transmission according to an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of a portion "A" FIG. 4 is a perspective view schematically showing a sprag according to an embodiment of the present invention. FIG. 4 is a perspective view schematically showing a sprag according to an embodiment of the present invention.
1 to 4, a
When the select lever provided in the vehicle is converted to the "P" range, the
The
The movement of the
The
One side of the sprag 20 (reference left side in Fig. 1) is rotatably mounted on the
Therefore, when the
The
The
A return spring (not shown) is wound around the
One end of the return spring is supported by the
On the other hand, the
The corner of the
The
That is, the
The
The
The distance between the
One
The
The
Hereinafter, the operating state of the
As shown in Figs. 1 and 2, when the select lever of the vehicle is converted into the "P" range in a state where the
The
The
The
In contrast to the prior art, the shape of the toothed portion connected to the
The
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.
In addition, although a parking apparatus for an automatic transmission installed in an automobile has been described as an example, the present invention is merely an example, and a parking apparatus for an automatic transmission according to the present invention may be used for other mechanical apparatuses equipped with automatic transmissions.
Accordingly, the true scope of protection of the present invention should be defined by the claims.
1: Parking device for automatic transmission
10: parking rod 12: rod body
14: cap member 20: sprags
22: body portion 24: contact projection
30: first projection member 40: second projection member
50: Transmission housing 52: Spragg shaft
54: guide portion 60: parking gear
62: retaining tooth 64: mounting groove
Claims (6)
A sprocket rotatably installed in the transmission housing and rotated in a direction in which the parking gear is installed by being pushed by the parking rod;
A first projection member protruding from a side surface of the sprag facing the parking gear and engaged with the parking gear; And
And a second projection member protruding from a side surface of the sprag member spaced apart from the first projection member and engaged with the parking gear.
Wherein the parking rod has a rod body that is linearly moved toward a direction in which the sprag is installed; And
And a cap member having a wedge-shaped inclined surface and mounted on a front end of the rod body.
The sprag includes a body portion hinged to the transmission housing by a sprag shaft; And
And a contact protrusion extending from the body portion and positioned in a path along which the cap member is moved.
Wherein the first protrusion member and the second protrusion member protrude from a side surface of the body portion facing the parking gear.
And the distance between the first projection member and the second projection member corresponds to the width of the engagement tooth provided on the outside of the parking gear.
Wherein the first protrusion member and the second protrusion member are installed along the same circumferential shape as the outer circumference of the parking gear.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020120155279A KR20140085090A (en) | 2012-12-27 | 2012-12-27 | Parking apparatus for automatic transmission |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020120155279A KR20140085090A (en) | 2012-12-27 | 2012-12-27 | Parking apparatus for automatic transmission |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20140085090A true KR20140085090A (en) | 2014-07-07 |
Family
ID=51734851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020120155279A KR20140085090A (en) | 2012-12-27 | 2012-12-27 | Parking apparatus for automatic transmission |
Country Status (1)
Country | Link |
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KR (1) | KR20140085090A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180075978A (en) * | 2016-12-27 | 2018-07-05 | 현대 파워텍 주식회사 | Parking system for vehicle and parking rod assembly thereof |
KR20190074645A (en) * | 2017-12-20 | 2019-06-28 | 한호산업(주) | Parking apparatus for transmission apparatus of electric vehicle and method for fault detecting thereof |
CN111350819A (en) * | 2020-03-17 | 2020-06-30 | 浩夫尔动力总成(上海)有限公司 | Parking mechanism of automobile transmission |
CN113734118A (en) * | 2021-11-08 | 2021-12-03 | 杭州非古科技有限公司 | New energy automobile parking structure |
-
2012
- 2012-12-27 KR KR1020120155279A patent/KR20140085090A/en not_active Application Discontinuation
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180075978A (en) * | 2016-12-27 | 2018-07-05 | 현대 파워텍 주식회사 | Parking system for vehicle and parking rod assembly thereof |
KR20190074645A (en) * | 2017-12-20 | 2019-06-28 | 한호산업(주) | Parking apparatus for transmission apparatus of electric vehicle and method for fault detecting thereof |
CN109944939A (en) * | 2017-12-20 | 2019-06-28 | 韩虎产业株式会社 | Electric automobile gear device parking apparatus and its method for diagnosing faults |
CN111350819A (en) * | 2020-03-17 | 2020-06-30 | 浩夫尔动力总成(上海)有限公司 | Parking mechanism of automobile transmission |
CN113734118A (en) * | 2021-11-08 | 2021-12-03 | 杭州非古科技有限公司 | New energy automobile parking structure |
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Legal Events
Date | Code | Title | Description |
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A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |