Shift-by-wire system

Abstract

The present disclosure provides a shift-by-wire system that physically prevents simultaneous execution of shifting to R / N / D range and shifting to P range. The shift-by-wire system includes a main body having a Hall sensor provided therein, a knob installed to be rotatable about an axis of the main body, a button assembly moving in an axial direction of the main body and having a magnet sensing a rotation and movement state through the Hall sensor and rotating together with the knob, and a simultaneous operation limiting unit mechanically limiting movement of the button assembly in a state of a rotation operation of the knob and mechanically limiting rotation of the knob in a state of a movement operation of the button assembly.

Description

Technical Field

[0001] This disclosure relates to a shift-by-wire system for vehicles. Background Technology

[0002] The statements in this section are provided only as background information in relation to this disclosure and may not constitute prior art.

[0003] In existing lever-type and dial-type shift-by-wire systems for vehicles, the sensing structures for shifting to reverse (R), neutral (N), and drive (D) gears and the sensing structure for shifting to park (P) gear are configured separately. Therefore, the shift switch for shifting to R / N / D gears and the PCB and shift switch for shifting to P gears are configured separately.

[0004] It has been found that in these shift-by-wire systems, drivers can physically attempt to shift to R / N / D and P gears simultaneously, which may lead to incorrect operation during shifting and thus increase driver anxiety.

[0005] The information disclosed in the background section above is only for enhancing the understanding of the background technology of this disclosure and should not be construed as conventional technology known to those skilled in the art. Summary of the Invention

[0006] This disclosure provides a shift-by-wire system that, by changing the structure of the system, physically prevents simultaneous shifting to R / N / D and shifting to P.

[0007] This disclosure provides a drive-by-wire shifting system that reduces package size by simplifying the sensing structure, thereby reducing costs and increasing design freedom.

[0008] In one aspect of this disclosure, a shift-by-wire system includes: a body configured to have a Hall sensor disposed therein; a knob mounted to be rotatable about an axis of the body; a button assembly configured to have a magnet configured to sense its rotational and movement states via the Hall sensor and rotate together with the knob, the button assembly being configured to move in an axial direction of the body; and a simultaneous operation limiting unit configured to mechanically limit the movement of the button assembly in a state of rotational operation of the knob, and to mechanically limit the rotation of the knob in a state of movement operation of the button assembly.

[0009] The gear shift can be performed to any gear other than P by rotating the knob and the direction of rotation of the knob, and the gear shift can be performed to P by moving the button assembly.

[0010] The button assembly may include: a button disposed at one end of the knob for being pressed; a shaft disposed axially in the body and configured to be connected at one end to the button; and a magnet holder connected to the other end of the shaft and configured to mount a magnet at a position corresponding to the Hall sensor.

[0011] The operation limiting unit may include: an operation blocking protrusion formed on the side surface of the shaft; a bullet housing fixed to the interior of the body, such that the shaft passes through the bullet housing to rotate and move linearly relative to the bullet housing; and an operation blocking recess formed at one end of the bullet housing corresponding to the operation blocking protrusion.

[0012] The operation stop protrusion can enter the operation stop recess due to the axial movement of the button, thereby restricting the rotation of the operation stop protrusion. Furthermore, the operation stop protrusion can be supported by the end of the bullet housing due to the rotation of the knob, thereby restricting the axial movement of the operation stop protrusion.

[0013] The button guide can be fastened between the button and the shaft. The button guide and the shaft can be fastened to each other by a fastening structure including hooks and grooves. The magnet bracket and the shaft can also be fastened to each other by a fastening structure including hooks and grooves.

[0014] One end of the magnet holder can be connected to the shaft, and the middle portion of the magnet holder extending to the other end can be formed into a curved shape.

[0015] A mounting recess may be formed in the magnet holder, allowing the magnet to be inserted into the mounting recess, and a fusion protrusion may be formed around the mounting recess, allowing the magnet to be fixed to the interior of the mounting recess by thermal fusion of the fusion protrusion.

[0016] A first rotation limiting part formed on the inner circumferential surface of the main body can be inserted axially into a second rotation limiting part formed on the outer circumferential surface of the bullet housing to limit the rotation of the main body and the bullet housing relative to each other. A second movement limiting part formed on the outer circumferential surface of the bullet housing can be engaged axially with the first movement limiting part formed on the inner circumferential surface of the main body and supported by the first movement limiting part to limit the movement of the main body and the bullet housing relative to each other.

[0017] A button leg may be formed at one end of the button and extend toward the body. An inner knob may be fitted into the knob to be surrounded by the inner surface of the knob. A button leg insertion hole may be formed at one end of the inner knob, and the button leg may be inserted into the button leg insertion hole to restrict the movement of the button and the knob relative to each other.

[0018] The button guide can be fixed to one end of the button and can be provided with a movement recovery unit configured to provide elastic restoring force to the button guide that moves axially according to the button's movement operation.

[0019] The movement recovery unit may include: a groove member supported by one end of the bullet housing such that axial movement of the groove member is restricted; and a return member formed of an elastic material and configured to have one end connected to the groove member and the other end having a dome member configured to protrude for being pressed by a button guide.

[0020] A guide hole may be formed at the center of the button guide portion, a guide leg may be formed at one end of the guide hole to extend toward the groove member, a guide rod may be formed at the center of one end of the groove member to be inserted into the guide hole, and a guide leg insertion hole may be formed in the side surface of the guide rod so that the guide leg is inserted into the guide leg insertion hole.

[0021] A rotary recovery unit that can be configured to provide a resilient restoring force to a button assembly that rotates according to the rotary operation of a knob.

[0022] The rotational recovery unit may include: a groove member configured to be rotatable relative to the bullet housing, wherein the rotation of the groove member is limited by a button assembly and configured to have a V-shaped groove formed along the rotation path on the portion of the groove member facing the bullet housing; a bullet, inserted into a bullet insertion groove formed in the bullet housing to be supported by the groove; and a return spring configured to provide an elastic restoring force toward the groove to the bullet.

[0023] The bullet insertion groove can be formed along the axial direction of the main body, such that the opening in the bullet insertion groove faces the groove member, and the return spring can be disposed between the inner end of the bullet insertion groove and the bullet.

[0024] According to another aspect of this disclosure, the shift-by-wire system includes: a main body configured to have a Hall sensor disposed therein; a knob configured to rotate about an axis of the main body and thereby perform a shift to a gear other than Park (P); a button assembly configured to have a magnet configured to sense rotational and movement states by the Hall sensor and to rotate together with the knob, and to move in the axial direction of the main body to perform a shift to P; and a simultaneous operation limiting unit configured to mechanically limit the movement of the button assembly when the knob is in a rotational operation state, and to mechanically limit the rotation of the knob when the button assembly is in a movement operation state.

[0025] Further applicability will become apparent from the description provided herein. It should be understood that the descriptions and specific examples are for illustrative purposes only and are not intended to limit the scope of this disclosure. Attached Figure Description

[0026] To better understand this disclosure, various forms of this disclosure will now be described by way of example and with reference to the accompanying drawings, in which:

[0027] Figure 1 This is an exemplary diagram illustrating one form of shift-by-wire system according to the present disclosure;

[0028] Figure 2 This is an exploded perspective view showing the components of one form of the shift-by-wire system of this disclosure;

[0029] Figure 3 This is a diagram illustrating the arrangement of the button assembly in one form of a shift-by-wire system according to this disclosure;

[0030] Figure 4 This is a diagram illustrating one form of a button component according to the present disclosure;

[0031] Figure 5A and Figure 5B This is a diagram illustrating one form of the present disclosure of limiting the rotation of a knob while the button is pressed;

[0032] Figure 6A and Figure 6B It is shown Figure 5A and Figure 5B An enlarged view of the connection relationship between the operation-stopping protrusion and the operation-stopping recess;

[0033] Figure 7A , Figure 7B and Figure 7C This is a diagram illustrating an exemplary form of the present disclosure of restricting button pressing operation while the knob is in a rotational state;

[0034] Figure 8A and Figure 8B It is shown Figure 7A , Figure 7B and Figure 7C An enlarged view of the connection relationship between the operation-stopping protrusion and the operation-stopping recess;

[0035] Figure 9 This is a diagram illustrating the connection between the bullet housing and the body according to one form of the present disclosure for limiting the rotational movement of the bullet housing relative to the body;

[0036] Figure 10 This is a diagram illustrating the connection between the bullet housing and the main body according to one form of the present disclosure, for enabling the bullet housing to move linearly relative to the main body;

[0037] Figure 11 This is a diagram showing the state in which an inner knob, according to one form of the present disclosure, is assembled into the interior of a knob;

[0038] Figure 12A and Figure 12B This is a diagram showing the assembly state of a button and an inner knob according to one form of the present disclosure;

[0039] Figure 13A and Figure 13B This is a diagram illustrating the operation of restoring the movement of a button according to one form of this disclosure;

[0040] Figure 14 This is a diagram illustrating a structure for guiding linear movement of a button according to one form of the present disclosure;

[0041] Figure 15 This is a diagram illustrating an exemplary configuration of the rotation recovery unit according to the present disclosure;

[0042] Figure 16A , Figure 16B and Figure 16C This is a diagram illustrating the operation of restoring the rotation of a knob by rotating a recovery unit according to some forms of this disclosure.

[0043] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this disclosure in any way. Detailed Implementation

[0044] The following description is exemplary in nature only and is not intended to limit this disclosure, its application, or its uses. It should be understood that in all the drawings, corresponding reference numerals denote similar or corresponding parts and features.

[0045] Reference will now be made in detail to exemplary forms of this disclosure, examples of which are shown in the accompanying drawings. The same reference numerals are used wherever possible in all the drawings to refer to the same or similar parts.

[0046] Figure 1 This is an exemplary diagram illustrating one form of shift-by-wire system according to the present disclosure. Figure 2 This is an exploded perspective view showing the components of a shift-by-wire system according to one form of the present disclosure. Figure 3 This is a diagram illustrating the arrangement of the button assembly in one form of a shift-by-wire system according to the present disclosure.

[0047] Referring to these figures, some forms of the shift-by-wire system according to this disclosure include: a body 100 configured to have a Hall sensor 120 internally disposed; a knob 200 mounted to be rotatable about an axis of the body 100; a button assembly Ab configured to have a magnet 640 to allow the Hall sensor 120 to sense rotational and movement states, rotate with the knob 200 and move axially in the body 100; and a simultaneous operation limiting unit configured to mechanically limit the movement of the button assembly Ab in the state of rotational operation of the knob 200, and to mechanically limit the rotation of the knob 200 in the state of movement operation of the button assembly Ab.

[0048] In one form, the body 100 can be formed as a cylinder and can be mounted at a location where the driver can operate the body 100 during driving, for example, mounted on the side surface of the steering column. However, in addition to being cylindrical, the body 100 can also be formed in various other shapes, such as a polygonal box shape.

[0049] The controller 110 is installed inside the main body 100, and the Hall sensor 120 of the sensing magnet 640 can be disposed in the controller 110. For reference, the controller 110 can be implemented by a PCB.

[0050] Furthermore, according to an exemplary form of this disclosure, the controller 110 may be implemented using a non-volatile memory (not shown) and a processor (not shown), the non-volatile memory being configured to store algorithms for controlling the operation of various components of the vehicle or data relating to software commands for reproducing algorithms, and the processor being configured to use the data stored in the respective memory to perform operations described below. Here, the memory and processor may be implemented as separate chips. Alternatively, the memory and processor may be implemented as an integrated single chip. Here, the processor may take the form of at least one processor.

[0051] Furthermore, the Hall sensor 120 can sense the operation of shifting to R / N / D gear and shifting to P gear, and the sensed signal can be transmitted to the controller 110 to control the vehicle to shift to the corresponding gear.

[0052] Furthermore, one end of the knob 200 is rotatably connected to the end of the body 100.

[0053] The button assembly Ab, including button 300, is disposed inside the center of the other end of the knob 200 along the axial direction of the body 100, and one end of button 300 is exposed to the outside from the knob 200, so that button 300 can be pressed.

[0054] In addition, the magnet 640 sensed by the Hall sensor 120 is disposed on the button assembly Ab, so the magnet 640 moves and rotates together with the button assembly Ab.

[0055] Furthermore, when the knob 200 is rotated, the button assembly Ab, which is restricted by it, also rotates to perform a gear shift to a position other than P, depending on the rotation of the knob 200 and the direction of rotation. The gear other than P can be one of R, N, or D. For example, when the knob 200 is rotated in one direction, it can shift to R; when the knob 200 is rotated in another direction, it can shift to D; and when the knob 200 is in neutral, it can shift to N.

[0056] On the other hand, when the button assembly Ab is moved axially, the button assembly Ab moves relative to the knob 200, thereby shifting to the P position.

[0057] However, as described above, although the button assembly Ab also rotates when the knob 200 is rotated, the button assembly Ab is physically engaged with the interior of the body 100, so the button 300 cannot perform linear motion operations.

[0058] Furthermore, when the button component Ab is in motion, the knob 200 is physically engaged with the interior of the main body 100, so the knob 200 cannot rotate.

[0059] In other words, the shift-by-wire system physically prohibits or prevents the simultaneous rotation of the knob 200 for shifting to R / N / D and the pressing (moving) of the button 300 for shifting to P, thereby preventing erroneous operation during shifting, improving the marketability of the product, and providing psychological stability for the driver.

[0060] For reference, the shift-by-wire system according to this disclosure can be applied not only to shifting systems, but also to all operating systems that can be operated by a combination of rotation and pressing.

[0061] For example, a type of drive-by-wire system according to this disclosure can also be applied to drive mode switches, heated and ventilated seats, etc.

[0062] Therefore, in addition to the steering column, the main body 100 can also be installed in various locations, such as the steering wheel, console, and anti-collision pad, and can be adjusted by increasing or decreasing the number of rotation levels of the knob 200 and the number of pressing levels of the button 300.

[0063] Figure 4 This is a diagram illustrating a button assembly Ab according to one form of the present disclosure, which generally includes a button 300, a shaft 500, and a magnet holder 600.

[0064] More specifically, referring to the figure, the button assembly Ab includes a button 300 disposed at one end of the knob 200 for pressing, a shaft 500 disposed axially in the body 100 and connected at one end to the button 300, and a magnet holder 600 connected to the other end of the shaft 500 and on which a magnet 640 is mounted at a position corresponding to the Hall sensor 120.

[0065] For example, button 300 is connected to shaft 500 via button guide 400, which will be described below. Shaft 500 is connected to magnet bracket 600, and magnet 640 is fixed in magnet bracket 600, so that the position of magnet 640 can be changed according to the movement of button 300.

[0066] Therefore, when button 300 is pressed, magnet 640 moves in the same direction as the button 300, causing a change in the magnetic field. Hall sensor 120 in controller 110 senses this change in the magnetic field and sends the desired gear signal (indicating P gear) to the vehicle.

[0067] In one embodiment, when the button 300 is pressed, the elements constituting the button assembly Ab move linearly together with the button 300, but the knob 200 does not move, and the controller 110 and the bullet housing 900, which will be described below, remain in place.

[0068] Furthermore, when the knob 200 is rotated, the button assembly Ab rotates together with the knob 200, and the magnet 640 rotates in the same direction as the rotation of the knob 200, thereby causing a change in the magnetic field. Therefore, the Hall sensor 120 in the controller 110 senses the change in the magnetic field and sends a signal indicating the gear the user wants to select (indicating R, N, or D gear) to the vehicle.

[0069] In another form, when the knob 200 is rotated, the elements constituting the button assembly Ab rotate with the knob 200, but the controller 110 and the bullet housing 900, which will be described below, remain stationary.

[0070] Figure 5A and Figure 5B This diagram illustrates one form of operation of the present disclosure, where the rotation of the knob 200 is restricted while the button 300 is pressed. Figure 6A and Figure 6B It is shown Figure 5A and Figure 5B An enlarged view of the connection relationship between the operation-stopping protrusion 510 and the operation-stopping recess 910.

[0071] Furthermore, Figures 7A to 7CThis diagram illustrates the restriction of button 300 pressing operation while the knob 200 is being rotated. Figure 8A and 8B It is shown Figures 7A to 7C An enlarged view of the connection relationship between the operation-stopping protrusion 510 and the operation-stopping recess 910.

[0072] Referring to these figures, an exemplary form of the simultaneous operation limiting unit according to this disclosure may include: an operation-stopping protrusion 510 formed on a side surface of the shaft 500; a bullet housing 900 fixed to the interior of the body 100 such that the shaft 500 passes through the bullet housing to rotate and move linearly relative to the bullet housing 900; and an operation-stopping groove 910 formed at one end of the bullet housing 900 corresponding to the operation-stopping protrusion 510.

[0073] Specifically, a rectangular-shaped operation-stopping protrusion 510 is formed on the side surface of one end of the shaft 500.

[0074] Furthermore, both ends of the bullet housing 900 are open, allowing the shaft 500 to pass through the bullet housing 900, and a rectangular operation-preventing recess 910 is formed at the edge of the opening at the end of the bullet housing 900 near the button 300.

[0075] Specifically, when the knob 200 is in the neutral position and not rotated in either direction, the operation-stopping protrusion 510 and the operation-stopping recess 910 are coaxial. Therefore, when the button 300 is pressed in the neutral position of the knob 200, the operation-stopping protrusion 510 enters the operation-stopping recess 910.

[0076] like Figure 5A , Figure 5B , Figure 6A and Figure 6B As shown, the operation-stopping protrusion 510 moves into the operation-stopping recess 910 according to the axial movement of the button 300, thus restricting the rotation of the operation-stopping protrusion 510.

[0077] In other words, when the operation-stopping protrusion 510 enters the operation-stopping recess 910 according to the pressing operation of the button 300, since the bullet housing 900 with the operation-stopping recess 910 is fixed on the main body 100, even if the knob is rotated in this state, the operation-stopping protrusion 510 is engaged with the inner surface of the operation-stopping recess 910, so the knob 200 cannot be rotated.

[0078] Furthermore, such as Figures 7A to 7C as well as Figure 8A and Figure 8BAs shown, the operation-stopping protrusion 510 is supported by the end of the bullet housing 900 according to the rotation of the knob 200, thus restricting the axial movement of the operation-stopping protrusion 510.

[0079] In other words, when the operation-stopping protrusion 510 rotates together with the button assembly Ab around the axis of the button assembly Ab according to the rotation of the knob 200, since the bullet housing 900 with the operation-stopping recess 910 is fixed on the main body 100, in this state, even if the button 300 is pressed in the straight direction, the operation-stopping protrusion 510 is supported by the edge of the end of the bullet housing 900, so the button 300 cannot be pressed.

[0080] Therefore, mechanically preventing the simultaneous rotation of knob 200 and pressing of button 300, the operation of shifting to P gear and shifting to a gear other than P gear cannot be performed at the same time, thereby preventing incorrect operation during gear shifting and eliminating the psychological anxiety of the driver due to worry about incorrect operation during gear shifting.

[0081] Furthermore, refer to again Figure 4 The connection between the components of the button assembly Ab will be described in more detail. The button guide 400 is fastened between the button 300 and the shaft 500, and the button guide 400 and the shaft 500 are fastened to each other by a fastening structure including hooks and grooves, and the magnet holder 600 and the shaft 500 are fastened to each other by a fastening structure including hooks and grooves.

[0082] For example, a button leg 310 is formed at one end of the button 300, and the button guide 400 is fixedly connected to the button leg 310.

[0083] Furthermore, guide legs 410 with rectangular plate shapes and extending toward the axis 500 are formed on both sides of the button guide portion 400, and a first hook groove 420 with a rectangular hole shape is formed at the end of the guide legs 410.

[0084] Additionally, a wedge-shaped first hook 520 with an inclined surface is formed on the side surface of the shaft 500, orthogonal to the operation-stopping protrusion 510. The first hook 520 is formed in a shape corresponding to the shape of the first hook groove 420.

[0085] In other words, when one end of the shaft 500 is inserted into the space between the two guide legs 410, the button guide part 400 and the shaft 500 can be fastened to each other by inserting the first hook 520 into the first hook groove 420.

[0086] In another form, a protrusion serving as a stop may be further formed at the portion of each first hook 520 extending in the direction of the magnet support 600, and the end of the corresponding guide leg 410 may engage with the protrusion.

[0087] Furthermore, the other end of the shaft 500 is formed into a cylindrical shape, and a second hook groove 530 with a rectangular hole shape is formed in one surface of the other end of the shaft 500.

[0088] Additionally, a wedge-shaped second hook 630 with an inclined surface is formed at one end of the magnet support 600. The second hook 630 is formed in a shape corresponding to the shape of the second hook groove 530.

[0089] In other words, with the other end of the shaft 500 inserted into the end of the magnet bracket 600, the shaft 500 and the magnet bracket 600 can be fastened to each other by inserting the second hook 630 into the second hook groove 530.

[0090] Furthermore, the end of the magnet support 600 can be fastened to the shaft 500, and the middle portion of the magnet support 600 extending to the other end of the magnet support 600 can be formed into a curved shape.

[0091] In other words, the magnet support 600 is formed into a curved shape, so that the rotation radius of the magnet 640 when it rotates is greater than the rotation radius of the shaft 500.

[0092] Therefore, it is possible to more clearly distinguish between the magnetic field change of the magnet 640 in response to the linear motion of the button assembly Ab and the magnetic field change of the magnet 640 in response to the rotation of the button assembly Ab, thereby improving the accuracy of sensing the shift signal and thus improving the quality of the product.

[0093] Furthermore, a mounting recess 610 is formed in the magnet support 600, allowing the magnet 640 to be inserted into the mounting recess 610, and a fusion protrusion 620 is formed around the mounting recess 610, allowing the magnet 640 to be fixed to the interior of the mounting recess 610 by thermal fusion of the fusion protrusion 620.

[0094] For example, a circular mounting recess 610 can be formed in the other end of the magnet holder 600, and a magnet 640 can be disposed in the mounting recess 610. The magnet 640 can be fixed to the interior of the mounting recess 610 by performing thermal fusion on the fusion protrusions 620 formed around the mounting recess 610, thereby fixing the magnet 610 more firmly and stably.

[0095] Figure 9This is a diagram illustrating the connection relationship between the bullet housing 900 and the main body 100 according to one form of the present disclosure, for limiting the rotational movement of the bullet housing 900 relative to the main body. Figure 10 This diagram illustrates the connection between the bullet housing 900 and the main body 100, which enables the bullet housing 900 to move linearly relative to the main body.

[0096] Referring to these figures, a first rotation limiting portion 100a formed on the inner peripheral surface of the main body 100 can be axially inserted into a second rotation limiting portion 900a formed on the outer peripheral surface of the bullet housing 900 to limit the rotation of the main body 100 and the bullet housing 900 relative to each other. A second movement limiting portion 900b formed on the outer peripheral surface of the bullet housing 900 can be axially suspended on the first movement limiting portion 100b formed on the inner peripheral surface of the main body 100 and supported by the first movement limiting portion 100b to limit the movement of the main body 100 and the bullet housing 900 relative to each other.

[0097] For example, a first rotation limiting portion 100a in the shape of a protrusion is formed axially on both sides of the inner peripheral surface of the main body 100, and a second rotation limiting portion 900a in the shape of a groove is formed axially on both sides of the outer peripheral surface of the bullet housing 900. The first rotation limiting portion 110a and the second rotation limiting portion 900a are formed in corresponding shapes to each other.

[0098] Therefore, the first rotation limiting part 100a is inserted into the second rotation limiting part 900a, thereby limiting the rotation of the bullet housing 900 relative to the main body 100.

[0099] Furthermore, the first movement limiting part 100b protrudes radially inward from the inner peripheral surface of the main body 100, and the second movement limiting member 900b extends radially outward from the lower end of the outer peripheral surface of the bullet housing 900. The second movement limiting part 900b is located near the controller 110 based on the first movement limiting part 100b.

[0100] Therefore, the second movement restriction part 900b is suspended on the protruding plane of the first movement restriction part 100b and supported, thereby restricting the linear movement of the bullet housing 900 relative to the main body 100.

[0101] Therefore, the rotation and linear movement of the bullet housing 900 are restricted, so that the bullet housing 900 can be fixed inside the main body 100.

[0102] Figure 11 This is a diagram showing the state in which the inner knob 210 is assembled into the interior of the knob 200 according to one form of the present disclosure. Figure 12A and Figure 12BThis is a diagram showing the state in which the button 300 and the inner knob 201 are assembled according to another form of this disclosure.

[0103] Referring to these figures, a button leg 310 is formed at one end of the button 300 and extends toward the body 100. An inner knob 210 is fitted into the interior of the knob 200 to be surrounded by the inner surface of the knob 200. A button leg insertion hole 220 is formed at one end of the inner knob 210, and the button leg 310 is inserted into the button leg insertion hole 220 to restrict the movement of the button 300 and the knob 200 relative to each other.

[0104] For example, the insertion protrusion 200a protrudes along the length direction, i.e., forward and backward, from both sides of the inner peripheral surface of the knob 200, and the insertion groove 210a is formed along the length direction, i.e., forward and backward, from both sides of the outer peripheral surface of the inner knob 210. The insertion protrusion 200a and the insertion groove 210a are formed in corresponding shapes so that the inner knob 210 can be fitted into the interior of the knob 200.

[0105] Furthermore, a button leg 310 with a rectangular plate shape is formed at the end of the button 300, and the button leg 310 extends axially to form the same angle around the axis in the circumferential direction of the button 300.

[0106] A button leg insertion hole 220 with a shape corresponding to the shape of the button leg 310 is formed in the end of the inner knob 210 facing the button 300 at a position corresponding to the button leg 310, and the button leg 310 is inserted into the button leg insertion hole 220.

[0107] Therefore, when the inner knob 210 rotates according to the rotation of the knob 200, the button 300, which is restricted by the inner knob 210, also rotates.

[0108] Figure 13A and Figure 13B This is a diagram illustrating the operation of the restoring motion of a button 300 according to one form of the present disclosure.

[0109] In one embodiment, the button guide 400 may be fixed to one end of the button 300 and may have a movement recovery unit configured to provide an elastic restoring force to the button guide 400 which moves axially according to the movement operation of the button 300.

[0110] Referring to these figures, the movement recovery unit includes: a groove member 800 supported at one end of the bullet housing 900, such that axial movement of the groove member 800 is restricted; and a return member 700 formed of an elastic material and connected at one end to the groove member 800, and having a dome member 710 at the other end, the dome member 710 being formed to be pressed by the button guide 400.

[0111] For example, refer to Figure 15 The lower end of the groove member 800 is open at the center, and the upper end of the bullet housing 900 facing the groove member 800 is inserted into the open center of the lower end of the groove member 800. Here, the edge of the lower end of the groove member 800 is supported by a flange that extends outward from the middle portion of the outer peripheral surface of the bullet housing 900, thereby restricting the downward movement of the groove member 800.

[0112] Furthermore, such as Figure 13A and Figure 13B As shown, the lower end of the return member 700 is fitted onto the upper end of the recessed member 800. The dome member 710 protrudes from both sides of the return member 700 toward the button guide portion 400. The dome member 710 is formed of an elastic material and has a hollow structure; therefore, when the pressing member 430 presses the dome member 710, the pressing member 430 is pushed in the opposite direction to the pressing direction of the pressing member 430 due to the rebound force of the dome member 710.

[0113] The pressing member 430 protrudes from both sides of the button guide 40 toward the return member 700. The pressing member 430 is formed at a position corresponding to the dome member 710.

[0114] In other words, when the button 300 is pressed, the pressing member 430 formed on the button guide 400 presses the dome member 710 to compress the dome member 710, and when the pressing force is released from the button 300, the button 300 returns to its original position due to the rebound force of the dome member 710.

[0115] Therefore, when shifting to P gear by the restoring force of the dome component 710, it can provide the user with a sense of operation and comfort.

[0116] As described above, when the dome component 710 is compressed, the groove component 800 is supported by the bullet housing 900, so only the dome component 710 is compressed, and the return component 700 does not move in a straight line.

[0117] In one configuration, button 300 may be configured such that linear movement of button 300 is guided by recessed member 800.

[0118] Figure 14This is a diagram illustrating a structure for guiding the linear movement of a button 300 according to one form of the present disclosure. Referring to this drawing, a guide hole 440 is formed at the center of the button guide portion 400, a guide leg 410 is formed at one end of the guide hole 440 and extends toward the recess member 800, a guide rod 830 is formed at the center of one end of the recess member 800 and inserted into the guide hole 440, and a guide leg insertion hole 820 is formed in the side surface of the guide rod 830, such that the guide leg 410 can be inserted into the guide leg insertion hole 820.

[0119] In other words, the guide rod 830 formed on the groove member 800 is formed in the shape of a rectangular rod, and the guide hole 440 formed in the button guide part 400 is formed in the shape of a rectangular hole corresponding to the shape of the guide rod 830, so that the guide rod 830 is inserted into the guide hole 440 to be guided.

[0120] Furthermore, guide legs 410 are formed on both sides of guide holes 440, and guide leg insertion holes 820 corresponding to guide legs 410 are formed in rectangular hole shape on both sides of guide rod 830, so that guide legs 410 are inserted into guide leg insertion holes 820 to be guided.

[0121] In this way, because the guide rod 830 is guided in the guide hole 440 and the guide leg 410 is guided in the guide leg insertion hole 820, the linear movement of the button 300 and the button guide part 400 can be guided more stably.

[0122] Figure 15 This is a diagram illustrating an exemplary configuration of a rotation recovery unit according to one form of the present disclosure. Figures 16A to 16C This is a diagram illustrating the operation of restoring the rotation of the knob 200 by rotating the recovery unit according to another form of this disclosure.

[0123] In one embodiment, a rotational recovery unit may be provided that provides an elastic restoring force relative to the button assembly Ab when the knob 200 is rotated.

[0124] Referring to these figures, the rotation recovery unit includes: a groove member 800, configured to be rotatable relative to the bullet housing 900, wherein the rotation of the groove member 800 is limited by a button assembly, and configured to form a V-shaped groove 810 along the rotation path on the portion of the groove member 800 facing the bullet housing 900; a bullet 930, inserted into a bullet insertion groove 920 formed in the bullet housing 900 to be supported by the groove 810; and a return spring 940, configured to provide an elastic restoring force to the bullet 930 toward the groove 810.

[0125] Furthermore, the bullet insertion groove 920 can be formed along the axial direction of the main body 100, such that the opening in the bullet insertion groove 920 faces the groove member 800, and the return spring 940 can be disposed between the inner end of the bullet insertion groove 920 and the bullet 930.

[0126] For example, bullet insertion grooves 920 are formed on both sides of the bullet housing 900, and the bullet 930 is inserted into the bullet insertion grooves 920. One end of each return spring 940, which has a helical spring structure, is supported by the inner end of the corresponding bullet insertion groove 920, and the other end of each return spring 940 is supported by one end of the corresponding bullet 930.

[0127] Furthermore, a groove 810 with a V-shaped groove profile is formed in the groove member 800 facing the bullet insertion groove 920, and the other end of each bullet 930 is supported by the inner surface of the corresponding groove 810.

[0128] In other words, when the knob 200 is rotated in one direction or the other, the groove member 800 rotates together with the button 300, and the bullet part 930 located in the valley of the groove 810 is guided by the inclined profile of the groove 810 and moves linearly in the direction of compressing the return spring 940.

[0129] When the bullet part 930 moves to compress the return spring 940, the bullet part 930 should return to the valley of the groove 810 along the inclined profile of the groove 810, so that the groove member 800 can return to its position before rotation, that is, the knob 200 can return to the neutral position.

[0130] In this way, the bullet part 930 moves along the groove 810 by the compression force and elastic restoring force of the return spring 940, thereby rotating the knob 200 to return the knob 200 to its initial position. Thus, when rotating the knob 200, it can provide the user with a sense of operation and comfort.

[0131] The following describes the operation of shifting to various gears using a shift-by-wire system of an exemplary form according to this disclosure.

[0132] First, refer to Figure 5A and Figure 5B This will describe the operation of shifting to P gear. When button 300 is pressed towards the main body 100, as... Figure 5B As shown, the button component Ab, including button 300, moves in the direction of movement of button 300, and the magnet 640 also moves in the direction of movement of button 300.

[0133] The magnet 640 moves in the same direction as the button 300 is pressed, causing a change in the magnetic field. The Hall sensor 120 in the controller 110 senses the change in the magnetic field, generates a P gear shift signal, and sends the signal to the vehicle, causing the vehicle to shift to P gear.

[0134] Specifically, when the operation-stopping protrusion 510 is engaged with the operation-stopping recess 910 due to the pressing of the button 300, the operation-stopping protrusion 510 is locked with the inner surface of the operation-stopping recess 910, thus preventing the knob 200 from being rotated.

[0135] Furthermore, such as Figure 13A and Figure 13B As shown, when the button 300 is pressed, the pressing member 430 formed on the button guide 400 presses the dome member 710 to compress the dome member 710, and when the pressing force is released by removing the user's hand from the button 300, the button 300 returns to its original position due to the rebound force of the dome member 710, thereby providing the user with a sense of operation and comfort when shifting to the P gear.

[0136] Next, refer to Figures 7A to 7C This section describes the operation of shifting to R and D gears. When in N gear, rotating the knob 200 degrees in one direction, as shown... Figure 7A As shown, the button assembly Ab rotates together with the knob 200 in the direction of rotation of the knob 200, and the magnet 640 also rotates together in the direction of rotation of the knob 200.

[0137] The magnet 640 moves in the same direction as the rotation of the knob 200, causing a change in the magnetic field. The Hall sensor 120 in the controller 110 senses the change in the magnetic field, generates a D gear shift signal, and sends the signal to the vehicle, causing the vehicle to shift to D gear.

[0138] In the same way, when the knob is rotated 200 degrees in the opposite direction while in the N position, as... Figure 7C As shown, the button assembly Ab rotates together with the knob 200 in the direction of rotation of the knob 200, and the magnet 640 also rotates together in the direction of rotation of the knob 200.

[0139] The magnet 640 moves in the same direction as the rotation of the knob 200, causing a change in the magnetic field. The Hall sensor 120 in the controller 110 senses the change in the magnetic field, generates an R gear shift signal, and sends the signal to the vehicle, causing the vehicle to shift to R gear.

[0140] In particular, when the operation-stopping protrusion 510 is rotated due to the rotation of the knob 200, the operation-stopping protrusion 510 is supported by the edge of the end of the bullet housing 900. Therefore, even if the button 300 is pressed, the pressing operation of the button 300 cannot be performed.

[0141] Furthermore, such as Figures 16A to 16C As shown, when the knob 200 is rotated in one direction or the other, the bullet part 930 is guided along the inclined profile of the groove 810 and compresses the return spring 940.

[0142] In this state, when the user removes his hand from the knob 200, the bullet part 930 returns to the valley of the groove 810 along the inclined profile of the groove 810 due to the elastic restoring force of the return spring 940, so the knob 200 can be rotated and returned to its neutral state.

[0143] In this way, the knob 200 is elastically restored by the elastic restoring force of the return spring 940, thereby providing the user with a sense of operation and appropriateness when shifting to the R or D gear.

[0144] As described above, a type of shift-by-wire system according to this disclosure can mechanically prohibit or prevent the simultaneous execution of rotating the knob 200 and pressing the button 300, thereby preventing the simultaneous execution of shifting to the P gear and shifting to a gear other than P, i.e., R gear or D gear, thereby avoiding incorrect operation during shifting and eliminating the psychological anxiety of the driver due to concerns about incorrect operation during shifting.

[0145] Furthermore, the shift-by-wire system according to this disclosure integrates a Hall sensor 120 and a controller 110 for shifting to P and R / N / D positions. Therefore, the size of the package can be reduced by simplifying the structure of the shift-by-wire system, thereby reducing cost and weight, and increasing design freedom to better suit the driver's aesthetics and improve space utilization.

[0146] As is evident from the above description, the shift-by-wire system of this disclosure mechanically prevents the simultaneous rotation of the knob and the pressing of the button, thereby preventing the simultaneous operation of shifting to the P gear and shifting to a gear other than P, namely the R gear or D gear. This avoids incorrect operation during shifting and eliminates the psychological anxiety of the driver due to concerns about incorrect operation during shifting.

[0147] Furthermore, the shift-by-wire system according to this disclosure integrates Hall sensors and controllers for shifting to P and R / N / D positions. Therefore, the size of the package can be reduced by simplifying the structure of the shift-by-wire system, thereby reducing cost and weight, and increasing design freedom to better suit the driver's aesthetics and improve space utilization.

[0148] Although exemplary forms of this disclosure have been disclosed for illustrative purposes, those skilled in the art will understand that various modifications, additions, and substitutions may be made without departing from the scope and spirit of this disclosure.

Claims

1. A shift-by-wire system comprising: a main body in which a Hall sensor is disposed; a knob rotatable about an axis of the main body; a button assembly including a magnet that rotates together with the knob, wherein a rotation and movement state of the magnet is sensed by the Hall sensor, the button assembly moves in an axial direction of the main body and includes a button disposed at one end of the knob to be pressed and a shaft disposed in the main body in an axial direction and connected to the button at one end; and a simultaneous operation restriction unit: mechanically restricts movement of the button assembly in a state of a rotation operation of the knob, and mechanically restricts rotation of the knob in a state of a movement operation of the button assembly, wherein the simultaneous operation restriction unit includes: an operation prevention protrusion formed on a side surface of the shaft; a bullet part housing fixed to an inside of the main body so that the shaft passes through the bullet part housing to rotate and linearly move with respect to the bullet part housing; and an operation prevention recess formed at one end of the bullet part housing corresponding to the operation prevention protrusion. 2.The shift-by-wire system of claim 1, wherein: a shift to a range other than a park range (P range) is performed based on a rotation operation of the knob and a rotation direction of the knob; and a shift to the P range is performed based on movement of the button assembly. 3.The shift-by-wire system of claim 1, wherein: the button assembly further includes: a magnet holder connected to the other end of the shaft and having a magnet installed at a position of the magnet holder corresponding to the Hall sensor. 4.The shift-by-wire system of claim 1, wherein: the operation prevention protrusion enters the operation prevention recess by movement of the button in an axial direction so that rotation of the operation prevention protrusion is restricted; and the operation prevention protrusion is supported by an end of the bullet part housing by rotation of the knob so that movement of the operation prevention protrusion in an axial direction is restricted. 5.The shift-by-wire system of claim 3, wherein: a button guide is disposed between the button and the shaft; the button guide and the shaft are coupled to each other by a first coupling structure including a hook and a groove; and the magnet holder and the shaft are coupled to each other by a second coupling structure including a hook and a groove. 6.The shift-by-wire system of claim 5, wherein: one end of the magnet holder is coupled to the shaft; and an intermediate portion of the magnet holder extending to the other end is formed in a curved shape. 7.The shift-by-wire system of claim 3, wherein: a mounting recess is formed in the magnet holder so that a magnet is inserted into the mounting recess; and a fusion protrusion is formed around the mounting recess so that the magnet is fixed to an inside of the mounting recess by thermal fusion of the fusion protrusion. 8.The shift-by-wire system of claim 1, wherein: A first rotation restriction portion formed on an inner circumferential surface of the main body is inserted into a second rotation restriction portion formed on an outer circumferential surface of the bullet portion case in an axial direction to restrict rotation of the main body and the bullet portion case relative to each other; and A second movement restriction portion formed on an outer circumferential surface of the bullet portion case is suspended on and supported by a first movement restriction portion formed on an inner circumferential surface of the main body in an axial direction to restrict movement of the main body and the bullet portion case relative to each other.

9. A shift-by-wire system, comprising: a main body in which a Hall sensor is provided; a knob rotatable about an axis of the main body; a button assembly including a magnet that senses a rotation and movement state of the magnet using the Hall sensor and rotates together with the knob, the button assembly moving in an axial direction of the main body; and a simultaneous operation restriction unit that: mechanically restricts movement of the button assembly in a state of a rotation operation of the knob, and mechanically restricts rotation of the knob in a state of a movement operation of the button assembly, wherein the button assembly includes: a button provided at one end of the knob to be pressed; a shaft provided in the main body in an axial direction and connected to the button at one end; and a magnet holder connected to the other end of the shaft and having a magnet installed at a position thereof corresponding to the Hall sensor, wherein a button leg is formed at one end of the button and extends toward the main body; an inner knob is fitted into the knob to be surrounded by an inner surface of the knob; and a button leg insertion hole is formed at one end of the inner knob into which the button leg is inserted to restrict movement of the button and the knob relative to each other.

10. A shift-by-wire system, comprising: a main body in which a Hall sensor is provided; a knob rotatable about an axis of the main body; a button assembly including a magnet that senses a rotation and movement state of the magnet using the Hall sensor and rotates together with the knob, the button assembly moving in an axial direction of the main body; and a simultaneous operation restriction unit that: mechanically restricts movement of the button assembly in a state of a rotation operation of the knob, and mechanically restricts rotation of the knob in a state of a movement operation of the button assembly, wherein the button assembly includes: a button provided at one end of the knob to be pressed; a shaft provided in the main body in an axial direction and connected to the button at one end; and a magnet holder connected to the other end of the shaft and having a magnet installed at a position thereof corresponding to the Hall sensor, wherein the shift-by-wire system further includes: a button guide fixed at one end of the button; and a movement recovery unit that provides an elastic recovery force to the button guide that moves in an axial direction according to a movement operation of the button.

11. The shift-by-wire system according to claim 10, wherein the movement recovery unit includes: a spring provided in the main body in an axial direction and connected to the button at one end; and a magnet holder connected to the other end of the spring and having a magnet installed at a position thereof corresponding to the Hall sensor. a groove member supported by one end of a bullet part housing such that axial movement of the groove member is restricted; and a return member formed of an elastic material and including a first end coupled to the groove member and a second end having a dome part protruded to be pressed by the button guide part. 12.The shift-by-wire system of claim 10, wherein, a guide hole is formed in a center of the button guide part; a guide leg is formed at one end of the guide hole and extends toward the groove member; a guide rod is formed in a center of one end of the groove member to be inserted into the guide hole; and a guide leg insertion hole is formed in a side surface of the guide rod such that the guide leg is inserted into the guide leg insertion hole. 13.A shift-by-wire system comprising: a main body in which a Hall sensor is disposed; a knob rotatable about an axis of the main body; a button assembly including a magnet that senses a rotation and movement state of the magnet using the Hall sensor and rotates together with the knob, the button assembly moving in an axial direction of the main body; and a simultaneous operation restriction unit: mechanically restricting movement of the button assembly in a state of a rotation operation of the knob, and mechanically restricting rotation of the knob in a state of a movement operation of the button assembly, wherein the button assembly includes: a button disposed at one end of the knob to be pressed; a shaft disposed in the main body in an axial direction and connected to the button at one end; and a magnet holder connected to the other end of the shaft and having a magnet installed at a position of the magnet holder corresponding to the Hall sensor, wherein the shift-by-wire system further includes: a rotation restoring unit that provides an elastic restoring force to the button assembly rotated according to the rotation operation of the knob. 14.The shift-by-wire system of claim 13, wherein, the rotation restoring unit includes: a groove member rotatable with respect to a bullet part housing while rotation of the groove member is restricted by the button assembly, and having a V-shaped groove formed along a rotation path in a portion of the groove member facing the bullet part housing; a bullet part inserted into a bullet part insertion groove formed in the bullet part housing to be supported by the groove; and a return spring that provides an elastic restoring force toward the groove to the bullet part. 15.The shift-by-wire system of claim 14, wherein, the bullet part insertion groove is formed in an axial direction of the main body such that an opening in the bullet part insertion groove faces the groove member; and the return spring is disposed between an inner end of the bullet part insertion groove and the bullet part. 16.A shift-by-wire system comprising: a main body in which a Hall sensor is disposed; a knob rotatable about an axis of the main body to thereby perform shifting to a gear position other than a park (P) gear position; and a button assembly including a magnet that senses a rotation and movement state of the magnet using the Hall sensor and rotates together with the knob, the button assembly moving in an axial direction of the main body. A button assembly including a magnet that rotates together with the knob, wherein a rotation and movement state of the magnet is sensed by the Hall sensor, the button assembly moving in an axial direction of the main body to perform a shift to a P range and including a button provided at one end of the knob to be pressed and a shaft provided in the main body in an axial direction and connected to the button at one end; and A simultaneous operation restriction unit: mechanically restricts movement of the button assembly in a state of a rotation operation of the knob, and mechanically restricts rotation of the knob in a state of a movement operation of the button assembly, wherein the simultaneous operation restriction unit includes: an operation prevention protrusion formed on a side surface of the shaft; a bullet portion housing fixed to an inside of the main body so that the shaft passes through the bullet portion housing to rotate and linearly move with respect to the bullet portion housing; and an operation prevention recess formed at one end of the bullet portion housing corresponding to the operation prevention protrusion.

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