Patent ID: 12209660

DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS

Hereinafter, a parking apparatus for a vehicle according to embodiments of the present disclosure will be described with reference to the accompanying drawings. In this process, the thicknesses of lines or the sizes of components illustrated in the drawings may have been exaggerated for the clarity of a description and for convenience' sake.

Furthermore, terms to be described below have been defined by taking into consideration their functions in the present disclosure, and may be changed depending on a user or operator's intention or practice. Accordingly, such terms should be defined based on the overall contents of this specification.

FIG.1is a perspective view schematically illustrating a parking apparatus for a vehicle according to an embodiment of the present disclosure.FIG.2is a perspective view schematically illustrating major components of the parking apparatus for a vehicle according to an embodiment of the present disclosure.FIG.3is a front view schematically illustrating a parking apparatus for a vehicle according to an embodiment of the present disclosure.FIG.4is a front view schematically illustrating major components of the parking apparatus for a vehicle according to an embodiment of the present disclosure.FIG.5is a front view schematically illustrating a sprag part and a parking rod cam part of a parking rod part in the parking apparatus for a vehicle according to an embodiment of the present disclosure.FIG.6is a front view schematically illustrating operations of the sprag part and the parking rod cam part of the parking rod part in the parking apparatus for a vehicle according to an embodiment of the present disclosure.FIG.7is a front view schematically illustrating the state in which a vehicle is in a parking (P) gear state in the parking apparatus for a vehicle according to an embodiment of the present disclosure.FIG.8is a front view schematically illustrating that a vehicle is in a parking (P) gear release state in the parking apparatus for a vehicle according to an embodiment of the present disclosure.FIG.9is a front view schematically illustrating the state in which a vehicle is in the parking (P) gear release state in the parking apparatus for a vehicle according to an embodiment of the present disclosure.

Referring toFIGS.1to9, the parking apparatus for a vehicle according to an embodiment of the present disclosure may include a driving part100, a detent lever part200, a parking rod part300, a sprag part400, and a parking gear part500.

The driving part100may be operated by a knob (not illustrated) that is mounted on a driver's seat. The driving part100may consist of an actuator and a motor having a central axis110. The central axis110of the driving part100may be connected to the detent lever part200.

The detent lever part200may be connected to the central axis110of the driving part100, and may be rotated in response to the rotation of the central axis110.

The detent lever part200may be engaged with a parking rod transfer part310of the parking rod part300. The rotated detent lever part200may be restricted by a spring250by a certain degree or more. The detent lever part200may return to its original location by the spring250. The spring250may have one side fixed to a housing and the other side connected to the detent lever part200.

The parking rod part300may be moved in a straight line in response to the rotation of the detent lever part200. The parking rod part300may be engaged with the gear of the detent lever part200, and may be moved forward and backward in a straight line in response to the rotation of the detent lever part200.

The parking rod part300may include the parking rod transfer part310, a parking rod body part320, and a parking rod cam part330. The parking rod transfer part310may be geared with the detent lever part200, and may be moved forward and backward (on the basis ofFIGS.1and3) in response to the rotation of the detent lever part200.

The parking rod transfer part310is composed of a rack gear. Accordingly, the parking rod transfer part310that consists of the rack gear may be moved forward and backward in a straight line with respect to the detent lever part200that is rotated.

The parking rod body part320may be mounted on the parking rod transfer part310, and may be formed of a body having a long shape in the length direction of the sprag part400. The parking rod body part320may be formed to be bent in a “L” form in order to avoid interference with a surrounding component.

The parking rod cam part330may be mounted on an end (on a right end on the basis ofFIG.4) of the parking rod body part320, may come into contact with the sprag part400, and may move the sprag part400up and down. A surface of the parking rod cam part330, which comes into contact with the sprag part400as the parking rod body part320is moved forward and backward, may be formed to a different external diameter. Accordingly, the sprag part400may be moved up and down as the sprag part400comes into contact with the parking rod cam part330.

The parking rod cam part330may include a parking cam body part331and a parking cam pipe part333. The parking cam body part331may be mounted on the end (on the right end on the basis ofFIG.4) of the parking rod body part320, and may be formed in a taper shape so that the size of the external diameter of the parking cam body part331is reduced from the parking rod body part320to the outside thereof.

The parking cam body part331may be tapered from the end of the parking rod body part320toward the outside (on the right side on the basis ofFIG.4) thereof, so that the size of the external diameter of the parking cam body part331may be reduced. That is, the size of the external diameter of the parking cam body part331may be reduced from the parking rod body part320toward the parking cam pipe part333. Accordingly, the parking cam body part331may be formed to be downward tilted from the parking rod body part320toward the parking cam pipe part333.

The parking cam body part331may be tapered so that the external diameter thereof is gradually reduced, may make a line contact with a sprag stopper part450of the sprag part400, and thus can protect the parking rod part300although racheting occurs between the parking cam body part331and the sprag stopper part450.

The parking cam pipe part333may be mounted on the parking cam body part331, and may be formed in the form of a cylinder having a diameter smaller than the external diameter of the parking cam body part331. The parking cam pipe part333may come into contact with a sprag contact part430of the sprag part400.

The parking rod cam part330may further include a cam tilting part335. The cam tilting part335may be formed between the parking rod cam body part331and the parking cam pipe part333, and may be formed in a taper shape so that the size of the external diameter of the cam tilting part335is reduced from the parking rod cam body part331toward the parking cam pipe part333.

The sprag stopper part450may come into contact with a surface of the cam tilting part335. The cam tilting part335is formed in the taper shape so that the size of the external diameter of the cam tilting part335is reduced from the parking rod cam body part331toward the parking cam pipe part333. Accordingly, an impact on the sprag stopper part450can be reduced because the contact area and contact time of the sprag stopper part450are increased as the sprag contact part430is moved along the surface of the cam tilting part335.

A tilt angle θ1of the cam tilting part335may be formed to be greater than a tilt angle θ2of the parking rod cam body part331. Since the tilt angle θ1of the cam tilting part335is formed to be greater than the tilt angle θ2of the parking rod cam body part331, the sprag contact part430is moved along the surface of the parking rod cam body part331and moved to the cam tilting part335, and the contact area and contact time of the sprag stopper part450with the parking rod cam body part331can be increased.

The sprag part400may come into contact with the parking rod part300, and may be moved up and down in response to a movement of the parking rod part300.

The sprag part400may come into contact with the parking rod part300, and may be moved up and down in response to a movement of the parking rod part300. The sprag part400may rise and come into contact with the parking gear part500, and may restrict the rotation of the parking gear part500. That is, when the rotation of the parking gear part500is restricted by the sprag part400, a vehicle may be in a parking (P) gear state.

When the sprag part400falls and deviates from the parking gear part500, the parking gear part500may be rotated. That is, when the sprag part400deviates from the parking gear part500, the vehicle may not be in the parking (P) gear state.

The sprag part400may include a support body part410, a sprag body part420, the sprag contact part430, the sprag protrusion part440, and the sprag stopper part450.

The support body part410is mounted on the housing, and may rotatably support the sprag body part420.

The sprag body part420may have one end (a left end on the basis ofFIG.4) rotatably mounted on the support body part410. The sprag body part420may be rotated around the support body part410when the sprag contact part430is moved up and down along a surface of the sprag contact part430, which comes into contact with the parking rod cam part330of the parking rod part300.

The sprag contact part430may be formed to protrude from one side (a lower side on the basis ofFIG.4) of the sprag body part420, and may come into contact with the parking rod part300. As the sprag contact part430passes through the parking rod cam body part331and parking cam pipe part333of the parking rod cam part330, the sprag part400may be moved up and down.

The sprag part400may rise as the sprag contact part430is moved from the parking cam pipe part333toward the parking rod cam body part331, and may fall as the sprag contact part430is moved from the parking rod cam body part331to the parking cam pipe part333.

As the sprag contact part430passes through the parking cam body part331and parking cam pipe part333of the parking rod cam part330, the sprag body part420of the sprag part400may be moved up and down. That is, the sprag contact part430may rise as the sprag contact part430is moved from the parking cam pipe part333toward the parking cam body part331, and may fall as the sprag contact part430is moved from the parking cam body part331toward the parking cam pipe part333.

The sprag protrusion part440may be formed to protrude from the other side (an upper side on the basis ofFIG.4) of the sprag body part420, and may be inserted into the parking gear part500when the sprag body part420rises. The sprag protrusion part440may deviate from the parking gear part500when the sprag body part420falls. When the sprag protrusion part440is inserted into the parking gear part500, the rotation of the parking gear part500may be restricted.

The sprag stopper part450may protrude from the bottom (on the basis ofFIG.4) of the sprag body part420, and may come into contact with the parking rod cam body part331. The sprag stopper part450may be formed to be downward tilted from the support body part410toward the sprag contact part430along the taper shape of the parking rod cam body part331.

The sprag stopper part450may make a line contact with the parking cam body part331, and can protect the parking rod part300although racheting occurs between the sprag stopper part450and the parking cam body part331.

The height H of the sprag stopper part450that protrudes from the sprag body part420may be set so that the sprag contact part430and the parking cam pipe part333are spaced apart from each other when the sprag stopper part450comes into contact with the parking rod cam body part420.

An impact on the sprag contact part430and the occurrence of noise in the sprag contact part430, occurring when the sprag contact part430comes into contact with the parking cam pipe part333, can be inhibited because the height H of the sprag stopper part450that protrudes from the sprag body part420when the sprag stopper part450comes into contact with the parking rod cam body part420is set so that the sprag contact part430and the parking cam pipe part333are spaced apart from each other.

A plurality of gears is formed in an outer surface of the parking gear part500. The parking gear part500may be disposed over the sprag part400. The rotation of the parking gear part500may be restricted as the sprag protrusion part440of the sprag part400is inserted and engaged with the gears of the parking gear part500by the rise of the sprag part400.

That is, the rotation of the parking gear part500may be restricted by the sprag protrusion part440of the sprag part400. When the sprag protrusion part440deviates from the parking gear part500, the parking gear part500may be rotated. The parking gear part500can maintain the parking state (i.e., the parking (P) gear state) of the vehicle because the rotation of the parking gear part500is restricted by the sprag protrusion part440of the sprag part400.

An operation of the parking apparatus for a vehicle according to an embodiment of the present disclosure is described with reference toFIGS.7to9.

FIG.7is a front view schematically illustrating the state in which a vehicle is in the parking (P) gear state in the parking apparatus for a vehicle. Referring toFIG.7, the detent lever part200may be rotated by the driving part100. The parking rod body part320may be moved in a left direction thereof by the gearing of the detent lever part200and the parking rod transfer part310of the parking rod part300. As the parking rod body part320is moved, a location of the sprag protrusion part440of the sprag part400at which the sprag protrusion part440comes into contact with the parking cam pipe part333is changed.

That is, as the sprag protrusion part440of the sprag part400is moved from the parking cam body part331toward the parking cam pipe part333, the sprag body part420may be rotated around the support body part410, so that the sprag part400may fall.

The sprag stopper part450may be formed along the taper shape of the parking rod cam body part331. Accordingly, the sprag stopper part450may be moved while making a line contact with the parking rod cam body part331.

Referring toFIG.9, the sprag protrusion part440of the sprag part400that has fallen may be separated from the parking gear part500.

According to the parking apparatus for a vehicle according to an embodiment of the present disclosure, although racheting occurs between the sprag part400and the parking gear part500when the parking (P) gear is released, the sprag part400is geometrically robust because the sprag part400does not come into direct contact with the parking rod body part320of the parking rod part300, and can operate normally without affecting a behavior of the parking rod cam part330of the parking rod part300because the sprag part400does not impact on the parking rod cam part330of the parking rod part300.

Furthermore, according to an embodiment of the present disclosure, a parking operation of a vehicle can be implemented without deforming another component because the sprag stopper part450of the sprag part400has a structure that makes a line contact with the parking rod cam part330.

The present disclosure has been described above based on the embodiments illustrated in the accompanying drawings, but the embodiments are merely illustrative. A person having ordinary knowledge in the art to which the present disclosure pertains will understand that various modifications and other equivalent embodiments are possible from the embodiments. Accordingly, the technical range of protection of the present disclosure should be determined by the claims.