Vehicle transmission device

Abstract

The present invention relates to a vehicle transmission that can include a shift lever rotatably disposed in a shift housing about a rotation axis to select one of a plurality of shift ranges, a lever member movably disposed in the shift lever in a radial direction with reference to the rotation axis, a stopper plate including a plurality of stopper grooves formed in a rotation direction of the shift lever so that the lever member can be arranged to be inserted for each of the plurality of shift ranges, and a shift control portion that rotates the shift lever to shift from one of the plurality of shift ranges to another according to a shift signal, wherein the shift control portion includes a driving portion and a movable portion that rotates about the rotation axis by a driving force of the driving portion so that the lever member moves in the radial direction with reference to the rotation axis and a force is applied to the lever member in the rotation direction of the shift lever so that the shift lever rotates.

Description

Vehicle transmission Technical Field

[0001] This invention relates to a vehicle transmission device, and more specifically, to a vehicle transmission device capable of shifting gears without driver intervention. Background Technology

[0002] Typically, in order to keep the engine rotating at a constant speed according to the vehicle's speed, the vehicle uses a transmission to allow for different gear ratios, which the driver changes by operating the gear lever.

[0003] Recently, electronic transmissions such as shift-by-wire systems have been installed in vehicles. These electronic transmissions do not transmit the driver's gear lever operation force to the transmission via mechanical cables, but instead control the transmission via electrical signals based on the driver's gear lever operation.

[0004] An electronic transmission transmits an electrical signal generated by the change in the position of the gear lever to an actuator in the transmission, and the transmission shifts gears by being driven by the actuator.

[0005] In addition, in order to improve the convenience of drivers, research is being actively conducted on enabling remote driving or remote parking without driver-operated gear shifting. For this purpose, a solution is required that automatically shift gears by changing the position of the gear lever when driving or parking remotely.

[0006] [Existing Technical Documents]

[0007] [Patent Documents]

[0008] Korean Patent Publication No. 10-2020-0106233 (Publication Date: September 4, 2020) Summary of the Invention

[0009] In view of this necessity, the technical problem to be solved by the present invention is to provide a vehicle transmission device that can rotate the gear lever to the position corresponding to the target gear without driver operation.

[0010] The technical problems of this invention are not limited to those mentioned above, and those skilled in the art will clearly understand other technical problems not mentioned below through the following description.

[0011] To address the aforementioned technical problems, a vehicle transmission device according to an embodiment of the present invention may include: a gear lever rotatably disposed on a transmission housing about a rotation axis to select one of a plurality of gears; a lever member movably disposed on the gear lever in a radial direction based on the rotation axis; a stop plate including a plurality of stop grooves formed along the rotation direction of the gear lever, such that the lever member can be arranged for insertion into each of the plurality of gears; and a transmission control unit that rotates the gear lever according to a transmission signal to switch from one of the plurality of gears to another, wherein the transmission control unit includes: a drive unit; and a movable unit that rotates about the rotation axis by the driving force of the drive unit, causing the lever member to move radially about the rotation axis, and applies a force to the lever member in the rotation direction of the gear lever to rotate the gear lever.

[0012] The gear shift lever may include an elastic component that elastically supports the lever component radially with respect to the rotation axis.

[0013] Each of the plurality of stop slots may be arranged such that the opening into which the rod component is inserted faces the axis of rotation.

[0014] The shift control unit can move the lever component closer to the rotation axis, causing the lever component to disengage from the stop groove corresponding to the current shift gear among the plurality of stop grooves, thereby enabling the shift lever to rotate. When the shift lever rotates to a position corresponding to the target shift gear, the unit can move the lever component away from the rotation axis, causing the lever component to be inserted into the stop groove corresponding to the target shift gear among the plurality of stop grooves.

[0015] The vehicle transmission device may further include: a position sensing unit for sensing the position of the gear lever to sense the gear selected from the plurality of gears, wherein the position sensing unit may include: a magnet mounted on the gear lever; and a sensing sensor unit for sensing the magnetic force caused by the magnet.

[0016] The gear shift lever may include a movable hole to guide the movement of the lever component, wherein the movable hole may be formed to extend radially with respect to the rotation axis, such that the lever component moves radially with respect to the rotation axis and blocks the gear shift lever from moving in the rotation direction.

[0017] The speed control unit may include a drive force transmission unit that transmits the drive force to the movable part, wherein the drive force transmission unit may include at least one transmission gear arranged to mesh with each other.

[0018] The movable part may include: a gear part that rotates by the driving force of the drive part; and a gear guide part that rotates integrally with the gear part to rotate the gear lever.

[0019] The gear unit may include: an input gear that rotates about the rotation axis by the driving force; an output gear that is connected to the speed guide and rotates integrally with the input gear about the rotation axis by means of gear teeth formed to mesh with the gear teeth of the input gear; a gear cover that is attached to the input gear; and a pressing member located between the input gear and the gear cover.

[0020] The pressing component can apply force to the input gear, causing the input gear and the output gear to mesh with each other and rotate as a whole.

[0021] When an external force is applied to the output gear, the pressing member can be elastically deformed to produce a gear slip phenomenon in which one of the meshing gear teeth of the input gear and the gear teeth of the output gear passes over the other, thereby enabling the input gear to move in the direction of the rotation axis.

[0022] The two ends of the speed change guide can be connected to different positions of the output gear to form a closed curve with the output gear.

[0023] The gear shift guide may include: a first guide portion having a radius larger than the plurality of stop grooves; a second guide portion having a radius smaller than the plurality of stop grooves on one side of the first guide portion in the rotation direction of the gear shift lever; a connecting portion connecting the first guide portion and the second guide portion; and an extension portion extending from the output gear and connected to the second guide portion.

[0024] In the connecting portion, compared to the end connected to the first guide portion, the other end connected to the second guide portion can be located away from the first guide portion in the rotation direction of the gear shift lever, wherein when the gear shift guide portion rotates, the lever component can move along the contact surface of the connecting portion from one of the first guide portion and the second guide portion toward the other.

[0025] When the gear shift guide rotates, the extension can apply a force to the lever member located in the second guide, and the gear shift lever can rotate in the direction in which the force is applied to the lever member via the extension.

[0026] The shift guide can rotate in a first direction, causing the lever member to move from the first guide towards the second guide along the contact surface of the connecting part, so that the lever member disengages from the stop groove corresponding to the current shift gear among the plurality of stop grooves. While the lever member is located in the second guide, the extension can apply force to the lever member in the first direction, causing the shift lever to rotate to a position corresponding to the target shift gear. When the shift lever is rotated to the position corresponding to the target shift gear, the shift guide can rotate in a second direction, causing the lever member to move from the second guide towards the first guide along the contact surface of the connecting part, so that the lever member is inserted into the stop groove corresponding to the target shift gear among the plurality of stop grooves.

[0027] The vehicle transmission device may further include: a position sensing unit for sensing the position of the transmission guide, the position sensing unit may include: a magnet mounted on the transmission guide; and a sensing sensor unit for sensing the magnetic force caused by the magnet.

[0028] The vehicle transmission may further include: a projectile, disposed on the gear lever in a radially movable manner with respect to the rotation axis; an elastic member, elastically supporting the projectile; and a stop groove comprising a plurality of grooves arranged to allow the end of the projectile to be inserted along the rotation path of the projectile, so as to generate an operating feel when the gear lever is rotated.

[0029] Other specific aspects of this invention are detailed in the description and accompanying drawings.

[0030] The vehicle transmission device according to the present invention as described above has one or more of the following effects.

[0031] When parking or driving remotely, the gear lever can be rotated to the position corresponding to the target gear even without driver operation, thus improving driver convenience.

[0032] The effects of this invention are not limited to those mentioned above, and those skilled in the art will clearly understand other effects not mentioned through the description in the claims. Attached Figure Description

[0033] Figure 1 is a perspective view showing the appearance of a vehicle transmission device according to an embodiment of the present invention.

[0034] Figures 2 and 3 are perspective views illustrating a vehicle transmission device according to an embodiment of the present invention.

[0035] Figure 4 is a side view showing a vehicle transmission device according to an embodiment of the present invention.

[0036] Figures 5 and 6 are cross-sectional views showing a gear shift lever according to an embodiment of the present invention.

[0037] Figures 7 to 9 are side views showing a gearshift lever that rotates by the driver's gearshifting operation according to an embodiment of the present invention.

[0038] Figure 10 is a block diagram showing a speed control unit according to an embodiment of the present invention.

[0039] Figures 11 and 12 are exploded perspective views showing the drive unit and movable unit according to an embodiment of the present invention.

[0040] Figure 13 is a cross-sectional view showing the drive unit and movable part according to an embodiment of the present invention.

[0041] Figure 14 is a cross-sectional view showing an input gear moving in the direction of the rotation axis of the gear shift lever according to an embodiment of the present invention.

[0042] Figures 15 to 18 are side views showing a gear shift lever that rotates via a gear shift control unit according to an embodiment of the present invention.

[0043] Explanation of reference numerals in the attached figures

[0044] 100: Gear shift lever; 110: Through hole

[0045] 120: Moving hole; 130: Guide hole

[0046] 140: Mounting part; 141: Bushing assembly

[0047] 150: First elastic component; 151: Gear shifter.

[0048] 160: Second elastic component; 161: Projectile body

[0049] 170: Stop groove 171: Groove

[0050] 200: Rod component; 300: Stop plate

[0051] 310, 320, 330, 340: Stop groove; 400: Speed ​​control unit

[0052] 410: Drive unit; 411: Drive force transmission unit

[0053] 420: Movable part; 421: Gear part

[0054] 421a: Input gear; 421a': Gear teeth

[0055] 421b: Output gear; 421b': Gear teeth

[0056] 421c: Gear cover; 421d: Pressing component

[0057] 430: Drive control unit; 500: Transmission housing

[0058] 510: Indicator; 520: Central axis

[0059] 600: Gearbox locking unit; 610: Actuator

[0060] 620: Insertion slot Detailed Implementation

[0061] The advantages and features of the invention, as well as the methods of achieving them, will become apparent from the embodiments described in detail below with reference to the accompanying drawings. However, the invention is not limited to the embodiments disclosed below, but can be implemented in various forms that differ from one another. These embodiments are provided only to fully disclose the invention and to fully inform those skilled in the art of the scope of the invention, which is defined only by the scope of the claims. Throughout this specification, the same reference numerals refer to the same constituent elements.

[0062] Therefore, in several embodiments, to avoid ambiguity in the explanation of the present invention, well-known process steps, well-known structures and well-known technologies are not specifically described.

[0063] The terminology used in this specification is for illustrative purposes and is not intended to limit the invention. In this specification, the singular includes the plural unless otherwise specified in the text. The terms "comprises" and / or "comprising" as used in this specification mean that the presence or addition of more than one other constituent element, step, operation, and / or element besides those mentioned is not excluded. Furthermore, "and / or" includes each of the mentioned items and all combinations thereof.

[0064] Furthermore, the embodiments described in this specification will be illustrated with reference to cross-sectional views and / or schematic diagrams that serve as ideal examples of the invention. Therefore, the form of the example drawings may vary depending on manufacturing techniques and / or allowable tolerances. Thus, the embodiments of the invention are not limited to the specific forms illustrated, but include variations in form produced according to the manufacturing process. Furthermore, in the various drawings shown in this invention, for ease of explanation, the constituent elements may be shown slightly enlarged or reduced. Throughout the specification, the same reference numerals denote the same constituent elements.

[0065] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings illustrating the transmission device for vehicles, through embodiments thereof.

[0066] Figure 1 is a perspective view showing the appearance of a vehicle transmission device according to an embodiment of the present invention. Figures 2 and 3 are perspective views showing a vehicle transmission device according to an embodiment of the present invention. Figure 4 is a side view showing a vehicle transmission device according to an embodiment of the present invention. Figures 2 to 4 are examples of cases where the transmission housing 500 is omitted.

[0067] Referring to Figures 1 to 4, a vehicle transmission device 1 according to an embodiment of the present invention may include a gear shift lever 100, a lever component 200, a stop plate 300, and a transmission control unit 400.

[0068] In an embodiment of the present invention, an example is given of a remote parking system in which a vehicle transmission device 1 is used to search for a parking space by means of sensors for sensing the vehicle's state (such as wheel sensors, steering angle sensors) and sensors for sensing the state around the vehicle (such as camera sensors, lidar sensors, radar sensors, ultrasonic sensors, etc.) and to enable the vehicle to autonomously park when a parking space is available. However, the invention is not limited to this. The vehicle transmission device 1 of the present invention can be used not only in remote parking systems, but also in various situations where gear shifting is required even without driver intervention, such as when the vehicle is driven remotely or when the engine is turned off and the gear shift automatically switches to P gear.

[0069] When the vehicle transmission device 1 according to the present invention is used in a remote parking system, the aforementioned vehicle state and the state around the vehicle are transmitted to the vehicle's electronic control unit (ECU), and the vehicle's ECU generates a shift signal for the vehicle to move forward or backward and transmits it to the shift control unit 400 described later. The shift control unit 400 rotates the shift lever 100 to change gears according to the shift signal transmitted from the vehicle's ECU.

[0070] The gear lever 100 can be rotatably mounted on the gear housing 500 with the rotation axis Ax as the center, so that the driver can select one of a number of gears. The driver grasps the knob (not shown) provided at the end of the gear lever 100 and moves it in the forward and backward direction, the left and right direction, or a combination thereof, so that the gear lever 100 rotates with the rotation axis Ax as the center, thus enabling the selection of the desired gear.

[0071] In an embodiment of the present invention, the case in which the gear selectable by rotating the gear lever 100 is P, R, N, or D is used as an example. In this case, when the gear lever 100 rotates in a first direction with the rotation axis Ax as the center, the gear can be selected in the order of D, N, R, and P. When the gear lever 100 rotates in a second direction that is the opposite direction to the first direction, the gear can be selected in the order of P, R, N, and D.

[0072] At this time, the gear selectable by rotating the gear lever 100 is not limited to the example above. The gear selectable by rotating the gear lever 100 can be changed in various ways, and at least one of the gears mentioned above can also be selected by a separately equipped button or switch.

[0073] Furthermore, the gearbox housing 500 may be equipped with an indicator 510 having a movement channel 511 for guiding the movement of the gear lever 100, and a display device (not shown) for displaying the gear selectable by the gear lever 100 or the current gear may be provided around the movement channel 511.

[0074] Figures 5 and 6 are cross-sectional views showing a gear shift lever according to an embodiment of the present invention.

[0075] Referring to Figures 5 and 6, the gear shift lever 100 according to an embodiment of the present invention may be formed with a through hole 110 for a central shaft 520 centered on the rotation axis Ax to pass through, thereby the gear shift lever 100 can rotate around the rotation axis Ax.

[0076] The lever member 200 is movably disposed on the gear shift lever 100 in a radial direction with reference to the rotation axis Ax. The gear shift lever 100 may have a moving hole 120 formed in a radial direction with reference to the rotation axis Ax to limit the range of movement of the lever member 200. The lever member 200 can move in the radial direction with reference to the rotation axis Ax due to the moving hole 120. Conversely, the movement of the gear shift lever 100 in the rotational direction is blocked. Thus, when a force is applied to the lever member 200 in the rotational direction of the gear shift lever 100, the gear shift lever 100 can rotate around the rotation axis Ax.

[0077] In the gearshift lever 100, one end of the gearshift bar 151, which allows the lever member 200 to move when the driver performs a gear shifting operation, can be inserted into the guide hole 130 of the gearshift lever 100. One end of the gearshift bar 151 is arranged to be elastically supported by a first elastic member 150. Thus, when the driver applies force to the other end of the gearshift bar 151 to perform a gear shifting operation, the first elastic member 150 is compressed while the lever member 200 moves close to the rotation axis Ax of the gearshift lever 100. When the force applied by the operator to the other end of the gearshift bar 151 is removed, the lever member 200 can return to its original position by the restoring force of the first elastic member 150.

[0078] At this time, Figure 5 shows an example of the position of the lever member 200 when the driver does not apply force to the shift lever 151, and Figure 6 shows an example of the position of the lever member 200 when the driver applies force to the shift lever 151. It can be seen that, compared with the lever member 200 in Figure 5, the lever member 200 in Figure 6 is arranged closer to the rotation axis Ax of the shift lever 100.

[0079] Furthermore, a projectile 161, which is elastically supported by a second elastic member 160, can be arranged on one side of the gear shift lever 100. The end of the projectile 161 is arranged to contact a stop groove 170, which has a plurality of grooves 171 formed along the rotation direction of the gear shift lever 100. Thus, when the gear shift lever 100 rotates, the end of the projectile 161, which is elastically supported by the second elastic member 160, remains in contact with the stop groove 170 while moving between adjacent grooves. Therefore, it can provide a sense of operation when the driver operates the gear shift lever 100.

[0080] That is, when the gear lever 100 rotates with the end of the spring 161, which is elastically supported by the second elastic member 160, in contact with the stop groove 170, the second elastic member 160 is compressed or relaxed according to the contour shape of the plurality of grooves 171, thereby providing the driver with a sense of operation.

[0081] At this time, the stop groove 170 can be fixedly installed in the gearbox housing 500, so that when the gear shift lever 100 rotates, the end of the projectile 161 can move between adjacent grooves.

[0082] The stop plate 300 is fixedly disposed on the transmission housing 500 and may include a plurality of stop grooves 310, 320, 330, and 340 formed along the rotation direction of the transmission lever 100. The lever component 200 may be inserted into the stop grooves 310, 320, 330, and 340 corresponding to the current transmission gear.

[0083] In embodiments of the present invention, the plurality of stop grooves 310, 320, 330, 340 are configured using four stop grooves because the gear selectable by rotating the gear lever 100 is four gears: P, R, N, and D. The number of stop grooves formed on the stop plate 300 can vary depending on the gear selectable by rotating the gear lever 100.

[0084] The plurality of stop grooves 310, 320, 330, 340 can be arranged such that the opening into which the feed lever member 200 is inserted faces the rotation axis Ax of the shift lever 100. This arrangement is intended to keep the lever member 200 inserted into one of the plurality of stop grooves 310, 320, 330, 340 by the restoring force of the first elastic member 150 before an external force is applied to the shift lever 151.

[0085] At this time, the lever component 200 is inserted into one of the multiple stop grooves 310, 320, 330, 340 in order to prevent the gear lever 100 from rotating due to driver error or unexpected external impact, and to limit the rotation of the gear lever 100 before the driver applies force to the gear lever 151 in order to change gears.

[0086] One of the plurality of stop grooves 310, 320, 330, and 340 can be formed to have a radius different from that of the adjacent one, as described above. This is to prevent the shift lever 100 from rotating due to driver error or accidental external impact before the driver applies force to the shift lever 151. The driver applies force to the other end of the shift lever 151, so as shown in FIG7, the shift lever 200 moves to the position of the stop groove with the shortest radius from the rotation axis Ax among the plurality of stop grooves 310, 320, 330, and 340, and as shown in FIG8, the desired gear is selected by rotating the shift lever 100. In this state, when the force applied by the driver to the shift lever 151 is removed, as shown in FIG9, the shift lever 200 is inserted into the stop groove among the plurality of stop grooves 310, 320, 330, and 340 corresponding to the currently selected gear due to the restoring force of the first elastic member 150.

[0087] At this point, Figures 7 to 9 are examples of a driver selecting R from D gear, but are not limited to this. When selecting another gear from one of the multiple gears mentioned above, a similar method to Figures 7 to 9 can be used to select the gear.

[0088] As described above, when the lever member 200 is arranged to be inserted into one of the plurality of stop grooves 310, 320, 330, 340, before an external force is applied to the shift lever 151, the lever member 200 is maintained in the state of being inserted into one of the plurality of stop grooves 310, 320, 330, 340 by the restoring force of the first elastic member 150, thereby preventing the shift lever 100 from rotating due to driver error or accidental external impact. When an external force is applied to the shift lever 151, the lever member 200 disengages from the plurality of stop grooves 310, 320, 330, 340 and is arranged to have a smaller radius relative to the rotation axis Ax compared to the plurality of stop grooves 310, 320, 330, 340, so that the shift lever 100 can rotate.

[0089] The transmission control unit 400 can perform the following functions: as in the aforementioned remote parking system, it can change gears even without driver operation, based on the transmission signal transmitted from the vehicle's ECU.

[0090] FIG10 is a block diagram showing a speed control unit according to an embodiment of the present invention, FIG11 and FIG12 are exploded perspective views showing a drive unit and a movable unit according to an embodiment of the present invention, and FIG13 is a cross-sectional view showing a drive unit and a movable unit according to an embodiment of the present invention.

[0091] Referring to Figures 10 to 13, the speed control unit 400 according to an embodiment of the present invention may include a drive unit 410, a movable unit 420, and a drive control unit 430.

[0092] The drive unit 410 can generate driving force according to the gear shift signal received from the vehicle's ECU, and the driving force of the drive unit 410 can be transmitted to the movable part 420 through the driving force transmission unit 411, which includes at least one transmission gear 411a, 411b, 411c, so that the movable part 420 rotates about the rotation axis Ax of the gear shift lever 100.

[0093] The movable part 420 can function as follows: by the driving force of the drive part 410, it rotates around the rotation axis Ax of the gear shift lever 100, thereby causing the lever member 200 to move radially with reference to the rotation axis Ax of the gear shift lever 100, and applying force to the lever member 200 in the rotation direction of the gear shift lever 100, thereby causing the gear shift lever 100 to rotate around the rotation axis Ax.

[0094] The movable part 420 is mounted on the mounting part 140, which extends from one side of the through hole 110 formed in the gear shift lever 100 toward the rotation axis Ax, so that it can rotate around the rotation axis Ax of the gear shift lever 100 by the driving force of the drive part 410.

[0095] The movable part 420 may include a gear part 421 and a speed change guide part 422.

[0096] The gear unit 421 may include an input gear 421a that is driven by a driving force input to the drive unit 410 via a driving force transmission unit 411, and an output gear 421b that rotates by the driving force input to the input gear 421a.

[0097] The input gear 421a and the output gear 421b can be arranged along the rotation axis Ax with the gear shift lever 100 as the center of rotation. The gear teeth 421a' of the input gear 421a and the gear teeth 421b' of the output gear 421b can be arranged to mesh with each other, so that the output gear 421b can rotate when the input gear 421a rotates.

[0098] The input gear 421a and the output gear 421b may each have hollow portions 140a and 140b arranged for the mounting portion 140 of the gear shift lever 100 to be inserted. The mounting portion 140 may be equipped with a bushing component 141 that enables the input gear 421a and the output gear 421b to rotate smoothly and reduce wear.

[0099] The input gear 421a may be coupled with a gear cover 421c, and a pressing member 421d may be arranged between the input gear 421a and the gear cover 421c to compress or relax according to the position of the input gear 421a.

[0100] At this time, since the gear cover 421c is arranged such that its position is fixed by the transmission housing 500, the input gear 421a is kept in a meshing state with the output gear 421b by the pressure applied by the elastic force of the pressing member 421d, so that when the driving force is input to the input gear 421a, the output gear 421b can rotate together with the input gear 421a.

[0101] At this time, the reason why the input gear 421a and the output gear 421b mesh with each other by the elastic force applied by the pressing member 421d is that when the driver applies a force to the gear shift lever 100 during the shifting process based on the transmission control unit 400, and an external force is applied to the output gear 421b in the opposite direction to the rotation direction of the input gear 421a, or when an external force greater than the driving force transmitted by the input gear 421a is applied to the output gear 421b in the rotation direction of the input gear 421a, the pressing member 421d elastically deforms and a gear slip occurs between the input gear 421a and the output gear 421b, so that one of the gear teeth 421a' of the input gear 421a and the gear teeth 421b' of the output gear 421b can move over the other, thereby enabling relative movement between the input gear 421a and the output gear 421b, and thus preventing damage or malfunction of the gear unit 421.

[0102] That is, the input gear 421a and the gear cover 421c can be arranged to be separated by a predetermined interval by the pressing member 421d. Due to this separation space, when the pressing member 421d is elastically deformed, as shown in FIG14, the input gear 421a moves in the direction of the rotation axis Ax, so that the gear teeth 421a' of the input gear 421a and the gear teeth 421b' of the output gear 421b can be separated from each other, and one of the gear teeth 421a' of the input gear 421a and the gear teeth 421b' of the output gear 421b moves over the other, so that the input gear 421a and the output gear 421b can move relative to each other.

[0103] As described above, when an external force is applied to the output gear 421b and gear slippage occurs between the input gear 421a and the output gear 421b, vibration or noise may occur during the process of one of the gear teeth 421a' of the input gear 421a and the gear teeth 421b' of the output gear 421b passing over the other. As a result, the driver can know that a gear shifting process is being performed by the transmission control unit 400, and at the same time, can know that gear slippage has occurred due to the external force applied to the gear lever 100, so that he can take action.

[0104] The transmission guide 422 is configured such that its two ends are connected to different positions of the output gear 421b, thereby forming a closed curve shape together with the output gear 421b.

[0105] In this embodiment of the invention, the reason for the gear shift guide 422 and the output gear 421b forming a closed curve is that when force is applied to the lever member 200 by means of the gear shift guide 422, deformation of the gear shift guide 422 is prevented so that the force is applied properly, and when the gear shift guide 422 does not deform, the deformation guide 422 can be formed as a part to be separated.

[0106] The shift guide 422 may include a first guide 422a having a radius larger than the plurality of stop grooves 310, 320, 330, and 340 with respect to the rotation axis Ax of the shift lever 100, and a second guide 422b having a radius smaller than the plurality of stop grooves 310, 320, 330, and 340. The second guide 422b may be located at both ends of the first guide 422a in the rotation direction of the shift lever 100, and is connected to the first guide 422a via a connecting part 422c.

[0107] The connecting portion 422c can be arranged such that the other end connected to the second guide portion 422b is farther away from the first guide portion 422a than the end connected to the first guide portion 422a, so that the rod member 200 can move from one of the first guide portion 422a and the second guide portion 422b along the contact surface of the connecting portion 422c.

[0108] That is, when the two ends of the connecting portion 422c are arranged in a row along the radial direction with the rotation axis Ax as the reference, since the rod member 200 is difficult to move between the first guide portion 422a and the second guide portion 422b, the two ends of the connecting portion 422cb are arranged to be staggered, so that the rod member 200 can move along the connecting portion 422c from one of the first guide portion 422a and the second guide portion 422b to the other.

[0109] The other end of the second guide 422b can be connected to the extension 422d extending from the output gear 421b. Therefore, when the output gear 422b rotates, the speed change guide 422 connected to the output gear 421b can rotate.

[0110] The first guide portion 422a can be formed with both ends having a length including multiple stop grooves 310, 320, 330, and 340 in the rotation direction of the gear lever 100. The gear shift guide portion 422 can have an initial position of multiple stop grooves 310, 320, 330, and 340 located between the two ends of the first guide portion 422a, so that the driver can perform gear shifting operations under normal vehicle driving conditions.

[0111] At this time, when a shift signal is transmitted from the vehicle's ECU to generate driving force from the drive unit 410, the shift guide 422 rotates in one of two directions around the rotation axis Ax of the shift lever 100 by means of the rotation of the gear unit 421. In this case, the lever member 200 moves from the first guide 422a toward the second guide 422b along the contact surface of the connecting part 422c.

[0112] Furthermore, since the second guide portion 422b is formed to extend from the other end of the connecting portion 422c along the rotation direction of the gear lever 100, when the gear portion 421 continues to rotate in the same direction, the second guide portion 422b can prevent the lever member 200 from moving in a radial direction away from the rotation axis Ax of the gear lever 100, with the rotation axis Ax of the gear lever 100 as a reference.

[0113] With the lever member 200 in the state of the second guide 422b, the lever member 200 is subjected to force in the rotational direction of the shift guide 422 by means of the extension 422d connected between the output gear 421b and the second guide 422b. In this case, since the movement of the lever member 200 in the rotational direction of the shift lever 100 is blocked by the moving hole 130, the shift lever 100 rotates in the same direction as the shift guide 422, so that the shift lever 100 can rotate.

[0114] For example, when the shift guide 422 rotates in the first direction, since the lever member 200 is subjected to force in the first direction by the extension 422d, it can be understood that the shift lever 100 also rotates in the first direction.

[0115] At this time, when the shift lever 100 is rotated to the position corresponding to the target shift gear by the rotation of the shift guide 422, the drive unit 410 generates a driving force that causes the shift guide 422 to rotate in a second direction opposite to the first direction. In this case, the lever member 200 moves along the connecting part 422b from the second guide 422b toward the first guide 422a by the restoring force of the first elastic member 150, thereby inserting into the stop grooves of the plurality of stop grooves 310, 320, 330, 340 corresponding to the target shift gear.

[0116] The drive control unit 430 can control the drive unit 410 according to the transmission signal transmitted from the vehicle's ECU, thereby causing the transmission guide unit 422 to rotate in one of the first and second directions.

[0117] The drive control unit 430 can control the drive unit 410 based on the sensing results of the first position sensing unit 440 which senses the position of the gear shift lever 100 and the second position sensing unit 450 which senses the position of the gear shift guide 422.

[0118] The first position sensing unit 440 may include a first magnet 441 mounted on the gear shift lever 100 and a first sensing sensor unit 442 for sensing the magnetic force generated by the first magnet 441. The second position sensing unit 450 may include a second magnet 451 mounted on the gear shift guide unit 422 and a second sensing sensor unit 452 for sensing the magnetic force generated by the second magnet 451.

[0119] The drive control unit 430 can determine whether the gear lever 100 has reached the position corresponding to the target gear based on the sensing result of the first position sensing unit 440, and can sense the position of the gear shift guide 422 based on the sensing result of the second position sensing unit 450. The drive control unit 430 can control the drive unit 410 to return the gear shift guide 422 to the initial position, so that the driver can perform a gear shift operation after the gear lever 100 reaches the position corresponding to the target gear.

[0120] At this time, the drive control unit 430 generates a shift control signal corresponding to the shift gear based on the position of the shift lever 100 sensed by the first position sensing unit 440. The generated shift control signal is transmitted to the transmission so that the shift gear can be changed.

[0121] In the embodiments of the present invention, the case in which the transmission control unit 400 includes the drive control unit 430 is described as an example, but it is not limited thereto. The vehicle's ECU or the like can also function as the drive control unit 430. In this case, the drive control unit 430 can be omitted.

[0122] In addition, the aforementioned vehicle transmission device 1 may also include a transmission locking unit 600 that allows a shift from the current gear to another gear when the shift conditions are met.

[0123] In an embodiment of the present invention, the gear shift locking part 600 may include at least one actuator 610, such as a solenoid, comprising a movable rod 611 capable of moving in one direction, and at least one insertion slot 620 arranged to insert the end of the movable rod 611 into the gear shift lever 100.

[0124] In this embodiment of the invention, the case in which the gear locking unit 600 includes a plurality of actuators 610 is described as an example. However, this is only to enable the gear locking function in two or more different gears. It is not limited to this, and the number of actuators 610 may vary depending on the gear that requires the gear locking function.

[0125] This shift lock unit 600 can activate the shift lock function when the end of the moving bar 611 is inserted into the insertion slot 620. When shift conditions such as vehicle speed or whether the brake pedal is operated are met, the actuator 610 is driven by disengaging the end of the moving bar 611 from the insertion slot 620, thereby enabling rotation of the shift lever 100 based on the driver or the shift control unit 400.

[0126] Referring to Figures 15 to 18, the process of shifting gears via the aforementioned gear control unit 400 will be explained below. Figures 15 to 18 are examples of the shift lever 100 rotating from the position corresponding to D gear to the position corresponding to R gear via the gear control unit 400.

[0127] When the gear lever 100 is in the D gear position and receives a gear shift signal for shifting to the R gear, the drive control unit 430 drives the drive unit 410, causing the gear shift guide 422 to rotate in the first direction. In this case, as shown in FIG15, the ground lever member 200 moves along the contact surface of the connecting part 422c in the direction from the first guide part 422a toward the second guide part 422b, so that as shown in FIG16, the ground lever member 200 is located in the second guide part 422b.

[0128] When the lever member 200 is located in the second guide portion 422b, the lever member 200 has a radius shorter than the plurality of stop grooves 310, 320, 330, 340, thereby releasing the state in which the rotation of the shift lever 100 caused by the lever member 200 is restricted. And when the shift guide portion 422 continues to rotate in the first direction, as shown in FIG17, the extension portion 422d applies force to the lever member 200 in the first direction, so that the shift lever 100 can rotate to the position corresponding to the R gear.

[0129] When the gear lever 100 is rotated to the position corresponding to the reverse gear, the drive control unit 430 controls the drive unit 410 to rotate the gear shift guide 422 in the second direction. In this case, the lever member 200 moves along the contact surface of the connecting part 422c from the second guide part 422b to the first guide part 422a by the restoring force of the first elastic member 150, thereby inserting into the stop groove corresponding to the reverse gear in one of the plurality of stop grooves 310, 320, 330, 340 as shown in FIG18, thereby restricting the rotation of the gear lever 100.

[0130] In Figures 15 to 18 above, the example of shifting from D gear to R gear is used for illustration, but it is not limited to this. It can also be applied similarly to the situation of shifting from one of the above multiple gears to another.

[0131] Those skilled in the art will understand that the invention can be implemented in other specific forms without altering its technical concept or essential features. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the invention is defined by the claims, not by the detailed description above, and all changes or modifications derived from the meaning, scope, and equivalents of the claims should be interpreted as included within the scope of the invention.

Claims

1. A vehicle transmission device, comprising: A gearshift lever, rotatably mounted on a gearbox housing about a rotation axis, selects one of a plurality of gears; a lever member, movably mounted on the gearshift lever in a radial direction based on the rotation axis; a stop plate including a plurality of stop grooves formed along the rotation direction of the gearshift lever, allowing the lever member to be arranged for insertion into each of the plurality of gears; and a gear shift control unit that rotates the gearshift lever according to a gear shift signal to shift from one of the plurality of gears to another, wherein the gear shift control unit includes: a drive unit; and a movable part that rotates about the rotation axis by the driving force of the drive unit, such that the lever member moves radially about the rotation axis. The movable part is moved and a force is applied to the lever member in the rotation direction of the gear lever, causing the gear lever to rotate. The movable part includes: a gear portion that rotates by the driving force of the drive portion; and a gear guide portion that rotates integrally with the gear portion to rotate the gear lever. The gear guide portion includes: a first guide portion having a radius larger than the plurality of stop grooves; a second guide portion having a radius smaller than the plurality of stop grooves on one side of the first guide portion in the rotation direction of the gear lever; a connecting portion connecting the first guide portion and the second guide portion; and an extension portion extending from the output gear of the gear portion and connecting to the second guide portion.

2. The vehicle transmission device according to claim 1, wherein, The gear shift lever includes an elastic component that elastically supports the lever component radially with respect to the rotation axis.

3. The vehicle transmission device according to claim 1, wherein, Each of the plurality of stop grooves is arranged such that the opening for insertion of the rod component faces the axis of rotation.

4. The vehicle transmission device according to claim 1, wherein, The gear shift control unit moves the lever member closer to the rotation axis, causing the lever member to disengage from the stop groove corresponding to the current gear in the plurality of stop grooves, thereby enabling the gear shift lever to rotate. When the gear shift lever rotates to a position corresponding to the target gear, the unit moves the lever member away from the rotation axis, causing the lever member to be inserted into the stop groove corresponding to the target gear in the plurality of stop grooves.

5. The vehicle transmission device according to claim 1, wherein, Also includes: A position sensing unit senses the position of the gear lever to sense the gear selected from the plurality of gears, wherein the position sensing unit includes: a magnet mounted on the gear lever; and a sensing sensor unit that senses the magnetic force caused by the magnet.

6. The vehicle transmission device according to claim 1, wherein, The gear shift lever includes a movable hole for guiding the movement of the lever component, wherein the movable hole is formed to extend radially with respect to the rotation axis, such that the lever component moves radially with respect to the rotation axis and blocks the gear shift lever from moving in the rotation direction.

7. The vehicle transmission device according to claim 1, wherein, The speed control unit includes a drive force transmission unit that transmits the drive force to the movable part, wherein the drive force transmission unit includes at least one transmission gear arranged to mesh with each other.

8. The vehicle transmission device according to claim 1, wherein, The gear unit includes: an input gear that rotates about the rotation axis by the driving force; an output gear that is connected to the speed guide and rotates integrally with the input gear about the rotation axis by means of gear teeth formed to mesh with the gear teeth of the input gear; a gear cover that is attached to the input gear; and a pressing member located between the input gear and the gear cover.

9. The vehicle transmission device according to claim 8, wherein, The pressing component applies force to the input gear, causing the input gear and the output gear to mesh with each other and rotate as a whole.

10. The vehicle transmission device according to claim 8, wherein, When an external force is applied to the output gear, the pressing member is elastically deformed to produce a gear slip phenomenon in which one of the meshing gear teeth of the input gear and the gear teeth of the output gear passes over the other, thereby enabling the input gear to move in the direction of the rotation axis.

11. The vehicle transmission device according to claim 8, wherein, The two ends of the speed change guide are connected to different positions of the output gear to form a closed curve with the output gear.

12. The vehicle transmission device according to claim 1, wherein, In the connecting portion, compared to the end connected to the first guide portion, the other end connected to the second guide portion is located away from the first guide portion in the rotation direction of the gear shift lever, wherein, when the gear shift guide portion rotates, the lever component moves along the contact surface of the connecting portion from one of the first guide portion and the second guide portion toward the other.

13. The vehicle transmission device according to claim 1, wherein, When the gear shift guide rotates, the extension applies a force to the lever member located in the second guide, and the gear shift lever rotates in the direction in which the force is applied to the lever member via the extension.

14. The vehicle transmission device according to claim 1, wherein, The shift guide rotates in a first direction, causing the lever member to move from the first guide towards the second guide along the contact surface of the connecting part, so that the lever member disengages from the stop groove corresponding to the current shift gear among the plurality of stop grooves. While the lever member is located in the second guide, the extension applies force to the lever member in the first direction, causing the shift lever to rotate to a position corresponding to the target shift gear. When the shift lever is rotated to the position corresponding to the target shift gear, the shift guide rotates in a second direction, causing the lever member to move from the second guide towards the first guide along the contact surface of the connecting part, so that the lever member is inserted into the stop groove corresponding to the target shift gear among the plurality of stop grooves.

15. The vehicle transmission device according to claim 1, wherein, Also includes: A position sensing unit, which senses the position of the transmission guide, the position sensing unit includes: a magnet, which is mounted on the transmission guide; And a sensing sensor unit that senses the magnetic force caused by the magnet.

16. The vehicle transmission device according to claim 1, wherein, Also includes: The projectile is mounted on the gear shift lever in a manner that allows it to move radially about the axis of rotation. Elastic component, providing elastic support for the projectile; And a stop groove, comprising a plurality of grooves arranged to allow the end of the projectile to be inserted along the rotation path of the projectile, so as to generate an operating feel when the gear lever is rotated.

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