Shift control device

Abstract

The present invention provides a shift control device, comprising: a housing; an inner shaft arranged to be rotatable within an angle range set by the housing; a rotating lever disposed so as to be capable of rotating together with the inner shaft and setting one shift position among P, N, R, and D shifts; a solenoid arranged to be provided in the housing and selectively interfere with rotation of the rotating lever; and a fixing unit that selectively interferes with the solenoid when the rotating lever rotates within the set angle range, in which the fixing unit includes: an interference member of which one end interferes with a plunger when the plunger of the solenoid protrudes to one side; and an inclined member disposed at the interference member in an inclined manner so as to press the plunger in the other side direction when the rotating rod rotates within the angular range.

Description

Technical Field

[0001] The present invention relates to a shift control device, and more particularly, to a shift control device that can shift to the P gear while reducing shift shock when controlling in one of the shift positions of P-R-N-D, even in a state where the vehicle power supply is disconnected. Background Art

[0002] A shift control device can change the gear ratio according to the vehicle speed to keep the engine rotation constant, and the driver changes the gear ratio of the transmission by operating a handle.

[0003] The shift modes of such a shift control device include a manual shift mode in which the driver can change the shift gear and an automatic shift mode in which the shift gear is automatically changed according to the vehicle speed when the driver selects a driving mode (D gear).

[0004] Meanwhile, a motion mode type shift control device that can perform manual shifting and automatic shifting in one shift control device is being used. The motion mode type shift control device can be equipped with a shift control device capable of performing manual shifting beside the shift control device for automatic shifting, so that while basically performing automatic shifting, the driver can also perform manual shifting by increasing or decreasing the gear position.

[0005] In such a shift control device, the automatic shift device can be divided into a rotary lever type and a column type that can be selectively controlled in one of a parking mode (P gear), a neutral mode (N gear), a reverse mode (R gear), and a driving mode (D gear).

[0006] Generally, the rotary lever type automatic shift device can mechanically adjust the shift position by connecting a cable, and the column type automatic shift device can electronically adjust the shift position using an electric signal.

[0007] However, in an automatic shift device, in the case where the vehicle battery discharges or the power connection is disconnected due to an accident, a shift control device that cannot control the shift position through a mechanical coupling structure such as a cable will have problems in adjusting the shift position. Therefore, there is an urgent need to develop a technology that can prevent safety accidents.

[0008] [Prior Art Documents] [Patent Documents] Korean Patent Publication No. 10-1357106 (authorized on January 23, 2014) Summary of the Invention

[0009] The present invention is proposed to solve the above-mentioned problems. More specifically, its purpose is to provide a shift control device that can reduce shift shock when controlling in one of the shift positions of P, N, R, and D gears, and can shift to the P gear even when the vehicle power supply is disconnected.

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

[0011] To achieve the above technical problems, a shift control device of the present invention includes: 1. A shift control device, including: a housing; an inner shaft arranged to be rotatable within an angular range set by the housing; a rotating rod arranged to rotate together with the inner shaft and set one of the shift positions of P, N, R, and D gears; a solenoid arranged in the housing and selectively interfering with the rotation of the rotating rod; and a fixing unit that selectively interferes with the solenoid when the rotating rod rotates within the set angular range. Among them, the fixing unit includes: an interference component, when the plunger of the solenoid protrudes to one side, one end of the interference component interferes with the plunger; and an inclined component arranged obliquely on the interference component to press the plunger in the other direction when the rotating rod rotates within the angular range.

[0012] The fixing unit may include: a first fixing portion provided on one side of the fixing unit to selectively interfere with the plunger centered on the solenoid when the plunger protrudes to one side.

[0013] The first fixing portion may include: a first interference component that interferes with the rotation of the rotating rod when the plunger protrudes to one side and the rotating rod rotates from the P gear to one of the R, N, and D gears; a first inclined component arranged obliquely on the first interference component and pressing the plunger in the other direction when the rotating rod rotates from another gear to the P gear.

[0014] The fixing unit may include: a second fixing portion provided on the other side of the fixing unit to selectively interfere with the plunger centered on the solenoid when the plunger protrudes to the other side.

[0015] The second fixing portion may include: a second interference component that interferes with the rotation of the rotating rod when the plunger protrudes to the other side and the rotating rod rotates from the N gear to another gear; a second inclined component arranged obliquely on the second interference component and pressing the plunger in one direction when the rotating rod rotates from the P gear to another gear.

[0016] The first interference component and the second interference component can be arranged separately around the solenoid within the set angular range.

[0017] The first tilting component and the second tilting component can be arranged separately around the solenoid within the set angular range, and can be arranged with a closer separation interval than that between the first interference component and the second interference component.

[0018] The first tilting component can be formed as a tilting surface within the range of 50° to 65° relative to the moving direction of the plunger.

[0019] The second tilting component can be formed as a tilting surface within the range of 36° to 50° relative to the moving direction of the plunger.

[0020] The plunger can be formed as a tilting surface corresponding to the tilting angle range of the first tilting component or the second tilting component in the area where it contacts the first tilting component or the second tilting component.

[0021] The speed change control device can further include: a magnet clamped between the rotating rod and the housing; a position sensor that senses the relative movement or rotation of the other side as the magnet moves on one side between the rotating rod and the housing.

[0022] When the power supply of the solenoid is disconnected and the brake is released, the plunger can protrude to one side and interfere with the first interference component, and when the rotation of the rotating rod is restricted, the rotating rod can be in the P gear.

[0023] If the brake is activated in the P gear, then as power is applied to the solenoid, the plunger can temporarily protrude to the other side, and the rotating rod is in a state where it can rotate.

[0024] During the process of the rotating rod rotating from the P gear to the R gear, if the position sensor senses that the rotating rod passes through a preset location between the P gear and the R gear, the solenoid can cause the plunger to protrude to one side.

[0025] When the rotating rod passes through the preset location between the P gear and the R gear, in the case where the rotation speed of the rotating rod is faster than the speed at which the plunger protrudes to one side, the solenoid can cause the other end of the plunger to protrude to one side while crossing the second tilting component.

[0026] When the rotating rod rotates from one gear among the R, N, and D gears to the P gear, even in the state of the engine being off, the solenoid can cause one end of the plunger to cross the first tilting component and maintain the interference state with the first interference component.

[0027] When the rotary lever is in the N gear, the brake is released, and the speed of the vehicle is below the set range, the solenoid can cause the plunger to protrude to the other side while inserting at least a part of the plunger inside the second interference member to prevent the rotation of the rotary lever.

[0028] The inner shaft may include a first rotation axis (R1) as the center when the inner shaft rotates with one end spaced apart from the housing, and the rotary lever may include a second rotation axis (R2) as the center when rotating within the set angle range together with the inner shaft.

[0029] The housing may include: an elastic member that elastically presses one end of the inner shaft toward the housing from the rotary lever.

[0030] The shift control device may further include: a shift lever coupled to the outer end of the inner shaft and capable of being held by a user, wherein if the shift lever rotates about the first rotation axis (R1) and separates the inner end of the inner shaft from the housing, the shift lever can rotate about the second rotation axis (R2) and select one of the shift positions of P, N, R, and D gears.

[0031] Specific matters of other embodiments are included in the detailed description and the drawings.

[0032] The shift control device according to an embodiment of the present invention, first, by providing a first inclined member in the fixing unit, the shift position can be adjusted to the P gear even in the state where the solenoid is powered off. Second, by providing a second inclined member in the fixing unit, when quickly changing the shift position from the P gear to the R gear, impact on the second interference member by the plunger can be prevented. Third, it has the effect of preventing accidental shifting of the shift lever when the vehicle is parked in the N gear.

[0033] The effects of the present invention are not limited to the above-mentioned effects, and those skilled in the art can clearly understand other effects not mentioned through the description in the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] When read in conjunction with the accompanying drawings, the detailed description of the preferred embodiments of the present application described below and the above-mentioned abstract will be better understood. To illustrate the present invention, preferred embodiments are shown in the drawings. However, it should be understood that the present application is not limited to the precise arrangements and manners shown.

[0035] Figure 1 is a perspective view showing a shift control device according to an embodiment of the present invention.

[0036] Figure 2aIs an exploded view Figure 1 An exploded perspective view of the illustrated speed change control device shown from the front direction.

[0037] Figure 2b Is an exploded view Figure 1 An exploded perspective view of the illustrated speed change control device shown from the rear direction.

[0038] Figure 3 Is a reference view showing the state of removing Figure 1 The second housing 110b of the illustrated speed change control device.

[0039] Figure 4 Is a partial enlarged view enlarging a partial area of the rotating rod of the speed change control device shown in FIG. 2.

[0040] Figures 5 to 11 Is a front view showing the relationship between the solenoid and the rotating rod of the speed change position of the speed change control device according to an embodiment of the present invention.

[0041] Description of reference numerals 100: Speed change control device 110: Housing 110a: First housing 110b: Second housing 120: Inner shaft 130: Shift lever 140: Rotating rod 150: Solenoid 160: Fixed unit 160a: First fixing portion 160b: Second fixing portion 161: First interference member 162: First inclined member 163: Hole 164: Second interference member 165: Second inclined member 166: Hole Detailed description of the embodiment

[0042] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Referring to the embodiments described in detail later together with the drawings Figure One The advantages and features of the present invention and the methods for achieving these can be clarified. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and the present embodiments are provided only to make the disclosure of the present invention complete and to fully inform those with ordinary knowledge in the technical field to which the present invention belongs of the scope of the invention. The present invention is only defined by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0043] Since the present invention can be changed in various ways and can have various embodiments, specific embodiments will be illustrated and described in the drawings.

[0044] However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents, and alternatives included in the spirit and technical scope of the present invention.

[0045] Terms including ordinal numbers such as "first", "second", etc. may be used to describe various components, but these components are not limited by these terms.

[0046] These terms are only used to distinguish one component from another.

[0047] For example, without departing from the scope of the claims of the present invention, the second component may be referred to as the first component, and similarly, the first component may be referred to as the second component.

[0048] The term "and / or" includes combinations of multiple related listed items or any one of multiple related listed items.

[0049] When referring to a certain component being "connected" or "coupled" to another component, it should be understood that it may be directly connected or coupled to the other component, but there may also be other components in between.

[0050] Conversely, when referring to a certain component being "directly connected" or "directly coupled" to another component, it should be understood that there are no other components in between.

[0051] The terms used in this application are only used to describe specific embodiments and are not intended to limit the present invention.

[0052] Unless the context clearly indicates otherwise, the singular form also includes the plural form.

[0053] In this application, terms such as "including" or "having" should be understood to be intended to specify the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and should not be understood to preclude the existence or addition of one or more other features, numbers, steps, operations, components, or combinations thereof in advance.

[0054] Hereinafter, embodiments will be described in detail with reference to the drawings. However, regardless of the reference numerals, the same or corresponding components are given the same reference numerals, and repeated descriptions thereof are omitted.

[0055] Figure 1 is a perspective view showing a speed change control device according to an embodiment of the present invention, Figure 2a is an exploded Figure 1 exploded perspective view showing the speed change control device shown and viewed from the front direction, Figure 2b is an exploded Figure 1Exploded perspective view of the shown speed change control device as viewed from the rear direction, Figure 3 is a reference view showing the state of removing Figure 1 the second housing 110b of the shown speed change control device.

[0056] Referring to Figures 1 to 3 , the speed change control device 100 according to an embodiment of the present invention may include a housing 110, an inner shaft 120, a shift lever 130, a rotating lever 140, and a solenoid 150.

[0057] First, the housing 110 may include a first housing 110a and a second housing 110b.

[0058] The first housing 110a and the second housing 110b may be respectively arranged to face each other on one side surface and the other side surface, or arranged to face each other on the lower surface and the upper surface, and may form a receiving space inside. The inner shaft 120 and the rotating lever 140 may be provided inside the receiving space.

[0059] The first housing 110a and the second housing 110b may provide a structure with at least one side open, and be connected to the shift lever 130 from the end of the inner shaft 120 arranged inside. Among them, the shift lever 130 may be a structure for performing speed change by being held by a driver in the driving area inside the vehicle. For example, the speed change may be selectively implemented as one of park (P gear), reverse (R gear), neutral (N gear), and drive (D gear).

[0060] In addition, the solenoid 150 may be installed on the first housing 110a. The solenoid 150 may be equipped with a plunger 151 that protrudes outward or inward by magnetic force inside. The plunger 151 may be arranged to move along one axial direction.

[0061] In addition, the inner shaft 120 may be arranged to be rotatable about two axes on the first housing 110a. For example, the two axes may be a first rotation axis R1 and a second rotation axis R2. The first rotation axis R1 may be provided on the inner shaft 120, and the second rotation axis R2 may be provided on the rotating lever 140. The first rotation axis R1 and the second rotation axis R2 may be an x-axis and a y-axis arranged orthogonally to each other.

[0062] At this time, a flow space may be formed along the thickness direction of the rotating lever 140 inside the rotating lever 140 so that the inner shaft 120 can flow when rotating about the first rotation axis R1.

[0063] In addition, between the rotating rod 140 and the inner shaft 120, an elastic member 122 may be provided adjacent to the end of the inner shaft 120. The elastic member 122 can elastically press one end portion 121 of the inner shaft 120 toward the first housing 110a from the rotating rod 140. Therefore, when the driver does not apply an external force, one end portion 121 of the inner shaft 120 can be closely attached to the first housing 110a.

[0064] Therefore, if the inner shaft 120 rotates about the first rotation axis R1, it can rotate in such a way that one end portion 121 of the inner shaft 120 moves away from the first housing 110a while approaching the inside of the rotating rod 140. If it rotates about the second rotation axis R2 together with the rotating rod 140, the inner shaft 120 and the rotating rod 140 can maintain a uniform interval from the first housing 110a at the same time and rotate in the clockwise or counterclockwise direction.

[0065] Moreover, in a state where the inner shaft 120 rotates about the first rotation axis R1 and one end portion 121 of the inner shaft 120 is separated from the first housing 110a, the inner shaft 120 and the rotating rod 140 can rotate in the clockwise or counterclockwise direction.

[0066] In addition, the first housing 110a may be provided with anti-rotation protrusions 111 that restrict the inner shaft 120 from rotating in the clockwise or counterclockwise direction in a state where the inner shaft 120 is closely attached to the first housing 110a. Four anti-rotation protrusions 111 can be arranged at intervals corresponding to the shifting positions of the P, R, N, and D gears.

[0067] In addition, the rotating rod 140 is arranged to be able to rotate within a set angle range about the second rotation axis R2 together with the inner shaft 120. At this time, the rotating rod 140 may include a magnet 112 that moves (or rotates) relative to the first housing 110a within the set angle range together with the rotating rod 140. The magnet 112 can generate a magnetic force. The magnetic force generated by the magnet 112 can be sensed by a position sensor 113 provided inside the first housing 110a. For example, the magnet 112 can be a permanent magnet, and the position sensor 113 can be a magnetic proximity sensor. Therefore, the position sensor 113 can sense the rotation angle of the rotating rod 140 relative to the first housing 110a using the magnetic force distribution of the magnet 112. For example, the position sensor 113 can output the rotation angle of the rotating rod 140 relative to the first housing 110a as linear data. Since the linear data includes continuous rotation angles according to the position of the rotating rod 140, the precise rotation angle of the rotating rod 140 can be measured using the data output by the position sensor 113. The position sensor 113 can be arranged on a substrate 114 coupled to the inside of the first housing 110a.

[0068] In addition, the inside of the first housing 110a may include: a first shock absorber 115 that contacts the rotary lever 140 while rotating maximally in the clockwise direction when the rotary lever 140 rotates within a set angle range; and a second shock absorber 116 that contacts the rotary lever 140 while rotating maximally in the counterclockwise direction when the rotary lever 140 rotates within a set angle range. The first shock absorber 115 and the second shock absorber 116 can prevent the rotary lever 140 from directly contacting the first housing 110a or the second housing 110b, and at the same time, they are made of rubber, silicone, or synthetic resin material, so as to have the function of reducing noise and impact caused by contact between them.

[0069] In addition, the rotary lever 140 may include a bump 141 protruding from the rotary lever 140 inside the housing and a groove member 142 that is guided to a gearshift position while contacting the bump 141 inside the first housing 110a.

[0070] The bump 141 may be arranged to be able to rotate integrally with the rotary lever 140 about the second rotation axis R2. The bump 141 may have a structure with an elastically adjustable length. For example, the bump 141 elastically protrudes from the rotary lever 140 through a spring 143 so that the length of the bump 141 reaches the maximum. If pressure is applied from the outside in the direction of the rotary lever 140, the length of the bump 141 can be reduced while the spring 143 is compressed.

[0071] The groove member 142 may be formed with four grooves 144 corresponding to the gearshift positions of P, R, N, and D gears, and peaks 145 may be respectively formed between the grooves. For example, when the bump 141 moves or rotates from the P gear to the R gear, the length of the bump 141 can be elastically increased or decreased. Therefore, the length of the bump 141 can reach the maximum at each groove corresponding to the gearshift position and reach the minimum at the apex of each peak 145. Therefore, by using the elasticity generated by the spring 143 of the bump 141, the bump 141 can apply a force for fixing the position while protruding from each groove.

[0072] In this embodiment, two bumps 141 are provided and two groove members 142 are provided. Among them, one bump 141a and the other bump 141b can be arranged at a predetermined set angle and do not extend parallel from the rotating rod 140 at the same angle to each other. Also, one groove member 142a and the other groove member 142b can be arranged in the groove member 142 to correspond to the angles of one bump 141a and the other bump 141b. In addition, in this embodiment, any one groove of one groove member 142a and any one groove of the other groove member 142b can be arranged so as not to overlap each other. For example, a peak 145 of the other groove member 142b can be provided on the side of the groove 144 of one groove member 142a.

[0073] Thus, the following is achieved: When multiple bumps 141 and groove members 142 are provided, in the case where one bump 141a and the groove member 142a malfunction, the other bump 141b and the groove member 142b can also be used to guide the shifting process, or the shifted state can be stably fixed to the shifting positions of P gear, R gear, N gear, and D gear.

[0074] Moreover, the rotating rod 140 can include a fixing unit 160 that selectively interferes with a solenoid 150 mounted on the first housing 110a.

[0075] When the rotating rod 140 rotates about the second rotation axis R2, the fixing unit 160 interferes with the solenoid 150 and fixes the position of the rotating rod 140, or can guide the movement of the rotating rod 140 from any one shifting position to the direction of another shifting position while slidingly contacting the plunger 151 of the solenoid 150.

[0076] Figure 4 is a partial enlarged view that enlargedly shows a partial area of the rotating rod of the shift control device shown in FIG. 2.

[0077] In Figure 4 from the side opposite to the direction of the fixing unit 160 shown in Figure 3 the fixing unit 160 is shown. Therefore, Figure 3 the rotation of the rotating rod 140 in the clockwise direction or the counterclockwise direction and its rotation direction can be described conversely. Hereinafter, taking Figure 4 as a reference, the case where the rotating rod 140 rotates in the clockwise direction or the counterclockwise direction will be described. Whether Figure 3 or Figure 4 the rotation direction generated by the change of the shifting position of the rotating rod 140 between P gear and D gear can be applied in the same way.

[0078] Referring to Figure 4, the fixing unit 160 may include a first fixing part 160a and a second fixing part 160b. Hereinafter, the same reference numerals as those in the above figures may represent the same components.

[0079] First, the first fixing part 160a may include a first interference member 161 and a first inclined member 162.

[0080] The first interference member 161 may be disposed in the outermost region of the rotating rod 140 and may be disposed at a position where interference occurs outside between the P gear and the plunger 151 of the solenoid 150. The first interference member 161 may be disposed along the normal direction TD in the circumferential direction with respect to the second rotation axis R2 of the rotating rod 140. The first interference member 161 may be formed with a groove or a hole into which the plunger 151 can be inserted. In this embodiment, the case where a hole 163 penetrating through the first interference member 161 is formed is taken as an example for description. The first interference member 161 may be formed as a plane along the normal direction TD or may be formed as a curved surface having a predetermined curvature protruding outward along the circumferential direction.

[0081] In addition, the first inclined member 162 may be disposed to extend integrally from the first interference member 161 and may be inclined at a set angle so as not to be parallel to the first inclined member 162. At this time, the inclined direction of the first inclined member 162 may form an inclined surface in such a manner that when the rotating rod 140 rotates counterclockwise from the R gear toward the P gear, the end of the plunger 151 protruding from the solenoid 150 contacts the inclined surface and flows into the interior of the solenoid 150.

[0082] In addition, the second fixing part 160b may include a second interference member 164 and a second inclined member 165. The second interference member 164 may be disposed at a position where interference occurs inside between the plunger 151 of the solenoid 150. The second interference member 164 may be disposed along the normal direction TD in the circumferential direction with respect to the second rotation axis R2 of the rotating rod 140 and may be disposed so as not to overlap with the first interference member 161 in one circumferential direction with respect to the second rotation axis R2. The second interference member 164 may be formed with a groove or a hole into which the plunger 151 can be inserted. In this embodiment, the case where a hole 166 penetrating through the second interference member 164 is formed is taken as an example for description. The second interference member 164 may be formed as a plane along the normal direction TD or may be formed as a curved surface having a predetermined curvature protruding outward along the circumferential direction.

[0083] In addition, the second inclined member 165 may be arranged to integrally extend from the second interference member 164 and inclined at a set angle so as not to be parallel to the second inclined member 165. At this time, the inclined direction of the second inclined member 165 may form an inclined surface in the following manner; when the rotary lever 140 rotates clockwise from the P range toward the R range, one end of the plunger 151 protruding from the solenoid 150 contacts the inclined surface and flows into the interior of the solenoid 150.

[0084] In addition, although not shown in the drawings, inclined surfaces 152 formed by chamfers (for example, chamfered edges) are respectively provided at both front ends of the plunger 151 in contact with the respective inclined members 162 and 165. The inclined surfaces 152 of the plunger 151 may have angles corresponding to the angle ranges of the first inclined member 162 or the second inclined member 165.

[0085] In addition, the first interference member 161 and the second interference member 164, or the first inclined member 162 and the second inclined member 165 may be arranged to be spaced apart from each other clockwise or counterclockwise around the solenoid 150 within a set angle range. At this time, the first inclined member 162 and the second inclined member 165 may be arranged to be closer to each other around the solenoid 150 within a set angle range than the spacing between the first interference member 161 and the second interference member 164.

[0086] And, although not shown in the drawings, the plunger 151 may directly contact the fixing unit 160, or a separate contact member (not shown) may be provided on the plunger 151 to indirectly contact the fixing unit 160.

[0087] Figures 5 to 11 is a front view showing the relationship between the solenoid and the rotary lever of the shift positions of the shift control device according to an embodiment of the present invention.

[0088] First, Figure 5 and Figure 6 shows the fixing unit 160 in a state where the shift lever 130 (see Figure 1 ) is in the P range.

[0089] Refer to Figure 5, the plunger 151 is inserted into the hole 163 of the first interference member 161 while protruding to one side (or the outside). At this time, the brake (not shown) is in the closed state, and the solenoid 150 can also be in the closed state. For reference, the closed (off) state of the brake can be the state where the user (or driver) does not step on the brake, and the open (on) state of the brake can be the state where the user steps on the brake. The closed (off) state of the solenoid 150 can be the state where the plunger 151 protrudes to one side when the power supply to the solenoid 150 is disconnected, and the open (on) state of the solenoid 150 can be the state where the plunger 151 protrudes to the other side when the power supply is applied to the solenoid 150. That is, when the power supply is disconnected, the solenoid 150 can have an elastic restoring force so that the plunger 151 always protrudes in one direction.

[0090] In Figure 5 state, the shift position cannot be changed. That is, in the state where the vehicle is parked, whether it is started or not, if the brake is not stepped on, the movement (or rotation) of the shift lever 130 will be restricted.

[0091] In Figure 5 state, if the brake is stepped on, as Figure 6 shown, by applying power to the solenoid 150, the plunger 151 protrudes to the other side while allowing the shift lever 130 to move. In Figure 6 state, in the state where the brake is stepped on and the vehicle is started, the shift lever 130 can be moved from the P position to the D position at once.

[0092] Figure 7 Shows the state where the rotating lever moves away from the solenoid 150 corresponding to the position between the P position and the R position. Figure 7 It can correspond to both states where the rotating lever 140 moves from the P position to the R position or from the R position to the P position.

[0093] In Figure 7 , regardless of the on / off state of the brake, the solenoid 150 can be closed. For example, if it is assumed to move from the P position to the R position, the moment when the protrusion 141 crosses the peak between the P position and the R position on the groove member 142 is sensed by the magnet 112 and the position sensor, so that the plunger 151 can be controlled to protrude from the other side to one side. At this time, during the process of crossing the peak between the P position and the R position, if the position sensor senses the movement of the magnet 112, it is determined that the preset location between the P position and the R position is passed, so that the solenoid 150 can protrude the plunger 151 to one side according to the data of the position sensor. For example, the preset location between the P position and the R position can be the location at 50% between the P position and the R position.

[0094] In Figure 7In the state of [[ID=]], the plunger 151 preferably protrudes toward the first inclined member 162 and to one side before contacting the second inclined member 165. For example, when the user moves (or rotates) the shift lever 130 faster than the time point at which the plunger 151 protrudes to one side, or when the time point at which the plunger 151 protrudes to one side exceeds 50%, the other side of the plunger 151 may contact the second inclined member 165. Of course, even if the other side of the plunger 151 contacts the second inclined member 165, it will be carried out simultaneously with the operation of the plunger 151 protruding to one side, so a predetermined shifting shock may occur, but it may be pressurized in one side direction when the other side of the plunger 151 crosses the second inclined member 165.

[0095] Among them, the angle θ1 formed by the virtual straight line L1 extending from the upper surface of the first inclined member 162 and the virtual straight line L2 with respect to the axial direction of the plunger 151 can be set in the range of about 50° to 65°. More preferably, the contact angle θ1 of the upper surface of the first inclined member 162 contacting the axial direction of the plunger 151 can be about 58°.

[0096] Figure 8 Shows the position of the fixing unit when the shift position is in the R gear, Figure 9 Shows the position of the fixing unit when in the N gear, Figure 10 Shows the position of the fixing unit when in the D gear.

[0097] In Figures 8 to 10 , the shift positions of the R gear, N gear, and D gear can be in a state where the solenoid 150 is closed, regardless of the on / off state of the brake.

[0098] Among them, the angle θ2 formed by the virtual straight line L3 extending from the upper surface of the second inclined member 165 and the virtual straight line L2 with respect to the axial direction of the plunger 151 can be set in the range of approximately 36° to 50°. More preferably, the contact angle θ2 of the upper surface of the second inclined member 165 contacting the axial direction of the plunger 151 can be about 45°.

[0099] During normal driving, when changing the shift position among the R gear, N gear, and D gear, the fixing unit does not affect the operation of the solenoid 150.

[0100] However, Figure 11 Shows the position of the fixing unit when the shift position is in the N gear, and under specific conditions, the plunger 151 can be inserted into the hole 166 of the second interference member 164 while protruding to the other side.

[0101] Among them, the specific conditions can be a state where the brake is off, and can be a situation where the vehicle speed is 2 km / h or less.

[0102] For example, when the vehicle is parked on a flat ground and the driver has not stepped on the brake, when the rotary lever 140 is in the N gear, the movement of the shift lever 130 can be restricted while the plunger 151 and the second interference member 164 are locked. This N-gear locking function can be used to prevent a safety accident caused by the driver or a passenger accidentally shifting the shift lever 130 to the R gear or D gear without stepping on the brake in the parked state. Of course, if the driver steps on the brake and the brake is in the on state, the plunger 151 can move to one side and switch to a state where shifting is possible.

[0103] Moreover, although not shown, the user can move the shift lever from the D gear to the P gear regardless of whether the vehicle is started.

[0104] That is, in the D gear, since the solenoid 150 remains closed, gradually shifting to the N gear and R gear will not interfere with the fixing unit 160. In addition, during the process of moving the shift lever 130 from the R gear towards the P gear, the protruding plunger 151 on one side contacts the first inclined member. At this time, one side of the plunger 151 is pressurized to the other side while crossing the first inclined member 162, but it can move to the P gear.

[0105] However, when the vehicle is in a driving state and the shift lever 130 is moved from the D gear to the P gear, the shift lever 130 will move to the P gear. However, since the transmission (not shown) needs to maintain the D gear according to the driving state, due to the mismatch between the shift lever 130 and the transmission, the dashboard will issue a warning to the driver and guide the shift lever 130 to move back to the D gear.

[0106] However, its advantage is that, for example, when the power supply is cut off in the parked state of the vehicle due to an accident, even without stepping on the brake, the shift lever 130 can move from the D gear to the P gear. Since the plunger 151 is locked with the first interference member 161 in the P gear, even when there is a problem with the operation of the solenoid 150, it is possible to shift to the P gear.

[0107] Therefore, the shift control device according to an embodiment of the present invention can adjust the shift position to the P gear even in the state where the solenoid is powered off by providing the first inclined member in the fixing unit, and by providing the second inclined member in the fixing unit, in the situation of quickly changing the shift position from the P gear to the R gear, it is possible to prevent the plunger from applying an impact to the second interference member, and it has the effect of preventing the shift lever from accidentally shifting in the state where the vehicle is parked in the N gear.

[0108] As mentioned above, specific embodiments have been illustrated and described in order to exemplify the technical idea of the present invention. However, the present invention is not limited to the same structure and function as the specific embodiments described above, and various modifications can be made within the scope not departing from the present invention. Therefore, such modifications should also be regarded as belonging to the scope of the present invention, and the scope of the present invention shall be determined by the scope of the claims described below.

Claims

1. A speed control device, comprising: case; an inner shaft arranged to be rotatable within an angular range set by the housing; a rotating lever arranged to rotate together with the inner shaft and set a shift position among P, N, R and D gears; a solenoid arranged to be disposed on the housing and selectively interfere with the rotation of the rotating rod; as well as The fixing unit selectively interferes with the solenoid when the rotating rod rotates within the set angle range. Wherein, the fixing unit comprises: an interference member, one end of which interferes with the plunger when the plunger of the solenoid protrudes to one side; and The inclined member is arranged obliquely on the interference member so as to pressurize the plunger toward the other side when the rotating rod rotates within the angle range.

2. The speed control device according to claim 1, wherein: The fixing unit comprises: The first fixing portion is disposed at one side of the fixing unit so as to selectively interfere with the plunger with the solenoid as the center when the plunger protrudes to one side.

3. The speed control device according to claim 2, wherein: The first fixing portion comprises: a first interference component, which interferes with the rotation lever when the rotation lever rotates from the P gear to one of the R, N, and D gears if the plunger protrudes to one side; The first inclined member is arranged obliquely on the first interference member, and pressurizes the plunger toward the other side when the rotating lever rotates from the other gear to the P gear.

4. The speed control device according to claim 3, wherein: The fixing unit comprises: The second fixing portion is disposed on the other side of the fixing unit so as to selectively interfere with the plunger with the solenoid as the center when the plunger protrudes to the other side.

5. The speed control device according to claim 4, wherein: The second fixing portion includes: a second interference component, which interferes with the rotation rod when the rotation rod rotates from the N gear to another gear if the plunger protrudes to the other side; The second inclined member is arranged obliquely on the second interference member, and pressurizes the plunger in one direction when the rotating rod rotates from the P gear to another gear.

6. The speed control device according to claim 5, wherein: The first interference member and the second interference member are arranged to be spaced apart from each other within the set angle range with the solenoid as the center.

7. The speed control device according to claim 5, wherein: The first tilting member and the second tilting member are arranged at a distance from each other with the solenoid as the center within the set angle range, and are arranged closer than the distance between the first interference member and the second interference member.

8. The speed control device according to claim 3, wherein: The first inclined member is formed as an inclined surface within a range of 50 to 65 degrees relative to the moving direction of the plunger.

9. The speed control device according to claim 5, wherein: The second inclined member is formed as an inclined surface within a range of 36 to 50 degrees with respect to the moving direction of the plunger.

10. The speed control device according to claim 5, wherein: The plunger is formed with an inclined surface corresponding to the inclination angle range of the first inclined member or the second inclined member in a region contacting the first inclined member or the second inclined member.

11. The speed control device according to claim 5, further comprising: A magnet is sandwiched between the rotating rod and the housing; A position sensor senses relative movement or rotation of one side of the rotating shaft and the housing as the magnet moves on the other side.

12. The speed control device according to claim 11, wherein: When the power supply of the solenoid is turned off and the brake is released, the plunger protrudes to one side and interferes with the first interference member, and the rotation of the rotating lever is restricted, the rotating lever is located in the P range.

13. The speed control device according to claim 11, wherein: If the brake is activated in the P range, as power is applied to the solenoid, the plunger temporarily protrudes to the other side, and the rotating lever is in a rotatable state.

14. The speed control device according to claim 11, wherein: During the process of the rotating lever rotating from the P gear to the R gear, if the position sensor senses that the rotating lever passes through a preset position between the P gear and the R gear, the solenoid causes the plunger to protrude to one side.

15. The speed control device according to claim 14, wherein: When the rotating rod passes through a preset position between the P range and the R range, if the rotating rod rotates faster than the plunger protrudes to one side, the solenoid causes the other end of the plunger to protrude to one side while passing over the second inclined member.

16. The speed control device according to claim 11, wherein: When the rotating lever rotates from one of the R, N and D gears to the P gear, the solenoid causes one end of the plunger to pass over the first inclined member and maintain an interference state with the first interference member even in an ignition-off state.

17. The speed control device according to claim 11, wherein: When the rotating lever is in the N gear, the brake is released, and the vehicle speed is below a set range, the solenoid causes the plunger to protrude to the other side while inserting at least a portion of the plunger into the second interference member to prevent the rotating lever from rotating.

18. The speed control device according to claim 1, wherein: The inner shaft includes a first rotation axis (R1) as a center when the inner shaft rotates in a manner in which one end of the inner shaft is separated from the housing. The rotating rod includes a second rotating shaft (R2) serving as a center when the rotating rod rotates together with the inner shaft within the set angle range.

19. The speed control device according to claim 2, wherein: The housing comprises: The elastic member elastically presses one end of the inner shaft from the rotating rod toward the housing.

20. The speed control device according to claim 18, further comprising: a gear lever coupled to the outer end of the inner shaft and capable of being grasped by a user, If the shift lever rotates around the first rotating shaft (R1) and separates the inner end of the inner shaft from the housing, the shift lever rotates around the second rotating shaft (R2) and selects one of the P, N, R, and D gears.

Images