Disconnection device

Abstract

The present invention provides a disconnect device, in which the disconnect device comprises: a housing having a support ring and a one-side half axle gear therein, the one-side half axle gear meshing with a pinion gear inside the support ring; a first clutch ring connected to the sleeve and having a first clutch portion on a side facing the support ring; and a second clutch ring inserted into the first clutch ring, having a second clutch portion on one side facing the one side half axle gear, and coupled to the sleeve on the outer diameter portion on the other side.

Description

Technical Field

[0001] The invention relates to a disconnecting device capable of switching power to four-wheel drive or two-wheel drive. Background Art

[0002] Typically, a disconnect device is mounted on a differential assembly, and is a device that separates or connects the differential shaft according to driving conditions and switches between two-wheel drive (2WD) and four-wheel drive (4WD), thereby minimizing unnecessary power loss.

[0003] The existing disconnect device comprises: a differential assembly; a disconnect shaft connected to a right differential half-shaft gear arranged in a differential case; a disconnect hub connected to a right wheel; and a disconnect sleeve for connecting the power of the disconnect shaft and the disconnect hub or cutting off the power. When the disconnect sleeve is meshed with the claw gear portion of the disconnect shaft and the claw gear portion of the disconnect hub at the same time, the power of the input portion of a motor or an engine and the output portion of a wheel and the like is connected, thereby realizing four-wheel drive (4WD). When the disconnect sleeve moves toward the disconnect hub side to release the meshing state between the claw gear portion of the disconnect shaft and the claw gear portion of the disconnect hub, the power of the input portion of the motor or the engine and the output portion of the wheel and the like is cut off, thereby realizing two-wheel drive (2WD).

[0004] However, the existing disconnect device has a complicated operation structure, that is, the ball screw shaft, the shift fork and the disconnect sleeve are linked to each other through the operation of the motor, and the disconnect shaft and the disconnect hub are connected through the action of the disconnect sleeve. Due to the complicated operation structure, the overall length of the car is too long, which occupies a large amount of space in the car, which is not conducive to the weight and vehicle performance of the car. In addition, in the case of two-wheel drive with the auxiliary drive wheel of the four-wheel drive car disconnected, when the input part stops rotating, the main drive gear stops, and in the state where the disconnect shaft and the disconnect hub are separated, when the car is moving forward at a high speed, the rotation of the left differential half-shaft gear causes the high differential (High Differential) of the differential pinion to rotate at a high speed, thereby generating noise and vibration.

[0005] Prior art documents

[0006] Patent Documents

[0007] (Patent Document 1) Korean Patent Publication No. 10-2017-0123869 (published on November 9, 2017) Summary of the invention

[0008] In order to solve the above-mentioned problems, the object of the present invention is to provide a disconnecting device for realizing four-wheel drive by engaging the first clutch portion of the first clutch ring with the third clutch portion of the support ring through the first action of the sleeve, or realizing differential limiting by engaging the second clutch portion of the second clutch ring with the fourth clutch portion of the half-shaft gear on one side through the second action of the sleeve when the first clutch portion and the third clutch portion are engaged.

[0009] In order to achieve the above-mentioned purpose, the present invention provides a disconnecting device, wherein the disconnecting device includes: a shell having a supporting ring and a side half-shaft gear inside, the side half-shaft gear being meshed with a small gear inside the supporting ring; a first clutch ring being connected to a sleeve and having a first clutch portion on a side facing the supporting ring; and a second clutch ring being inserted into the interior of the first clutch ring and having a second clutch portion on a side facing the side half-shaft gear and connected to the sleeve at an outer diameter portion on the other side, wherein the first movement of the sleeve is caused by a first operation of an actuator device connected to the sleeve, the first clutch ring is pushed in the direction of the supporting ring, and the first clutch portion is meshed with a third clutch portion of the support ring to achieve four-wheel drive.

[0010] Moreover, it may be that, when the first clutch part and the third clutch part are in an engaged state, the second movement of the sleeve caused by the second operation of the actuator device pushes the second clutch ring in the direction of the one side half-shaft gear, and at the same time, the second clutch part is engaged with the fourth clutch part of the one side half-shaft gear to achieve differential limitation.

[0011] Furthermore, the first clutch ring may have a plurality of legs extending from the other side of the first clutch ring toward the sleeve, and ends of the legs are exposed to the outside through through holes of the housing and connected to the connecting portion of the sleeve.

[0012] Moreover, it may be that the sleeve moves the set first stroke while performing the first action, and pushes the first clutch ring in the direction of the support ring so that the first clutch portion of the first clutch ring is engaged with the third clutch portion of the support ring, and at the same time, the pressing surface toward one side of the support ring contacts the step portion provided on the outer diameter portion on the other side of the second clutch ring.

[0013] Moreover, it can be that the sleeve moves the set second stroke while performing the second action, and, while the pressing surface is in contact with the step portion, the step portion is pushed in the direction of the one side half-shaft gear, so that the second clutch portion of the second clutch ring is meshed with the fourth clutch portion of the one side half-shaft gear.

[0014] Furthermore, the step portion may have an insertion groove into which the connecting portion of the sleeve is inserted.

[0015] Furthermore, a first elastic member may be provided between the connecting portion of the sleeve and a locking portion provided on the outer diameter portion of the second clutch ring.

[0016] Furthermore, when the sleeve moves in the engagement direction, the first elastic member is pressed by the connection portion and compressed, and when the pressure of the sleeve disappears, the first elastic member is stretched to move the sleeve in the disengagement direction.

[0017] Furthermore, the sleeve may be moved in the direction of disengagement in a state where the sleeve is locked to a stopper provided on the outer diameter portion of the second clutch ring by the elastic force of the first elastic member.

[0018] Furthermore, the first clutch component, the second clutch component, the third clutch component, and the fourth clutch component may be constituted by dog ​​clutches.

[0019] Furthermore, the sleeve may be connected to a shift fork, and the shift fork may be arranged on a transfer nut of the actuator device.

[0020] Moreover, it may be that the actuator device includes: a housing; a motor connected to the housing; and a ball screw shaft connected to the motor, the transfer nut is connected to the ball screw shaft and is guided by a guide rail installed inside the housing so as to be movable along the ball screw shaft, and the shift fork extends from the transfer nut toward the sleeve through the open portion of the housing and is connected to the sleeve.

[0021] Furthermore, one side of the guide rail may be elastically supported by a second elastic component, and the second elastic component is assembled so that one side is inserted into the receiving hole of the shell and the other side is clamped on a locking protrusion provided on one side of the guide rail.

[0022] Furthermore, the pinion gear may be meshed with the side gear on the other side opposite to the side gear on the other side.

[0023] Furthermore, a coupling pin may be coupled to an outer diameter portion of the support ring in such a manner as to penetrate the center of the pinion gear.

[0024] Furthermore, a fixing pin may be connected to one side of the support ring in a manner of penetrating the connecting pin.

[0025] Effects of the Invention

[0026] In the present invention, the first clutch portion of the first clutch ring can be meshed with the third clutch portion of the support ring through the first action of the sleeve to achieve four-wheel drive.

[0027] Furthermore, the present invention can achieve differential limitation by the second action of the sleeve, in the meshing state of the first clutch portion and the third clutch portion, the second clutch portion of the second clutch ring meshes with the fourth clutch portion of the side gear.

[0028] In addition, in the present invention, by releasing the meshing state between the second clutch portion and the fourth clutch portion and the meshing state between the first clutch portion and the second clutch portion, the auxiliary drive wheel that slides when driving in the two-wheel drive mode rotates together with the support ring for supporting the differential gear set including two half-shaft gears and four pinion gears, thereby solving the existing noise problem caused by the high differential.

[0029] In addition, the present invention can facilitate assembly and maintenance and reduce the defect rate through modularization of the actuator device.

[0030] In addition, the present invention can significantly reduce the overall length, thereby significantly improving the weight and packaging installation performance.

[0031] In addition, the present invention can eliminate existing parts such as the disconnect shaft and reduce the number of components by modularizing the actuator device, thereby achieving advantages in terms of space, weight and cost.

[0032] In addition, the present invention can simplify the assembly process through modularization of the actuator device.

[0033] In addition, the present invention can be installed on any reducer as long as the installation space for the first clutch ring and the support ring is ensured through the modularization of the actuator device, thereby shortening the development time and providing high versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 2 is a perspective view showing a disconnecting device according to a preferred embodiment of the present invention.

[0035] Figure 2 is a side sectional view of a disconnection device according to a preferred embodiment of the present invention.

[0036] Figure 3 1 is a diagram showing a meshing state of a first clutch component and a third clutch component in a four-wheel drive according to a preferred embodiment of the present invention.

[0037] Figure 4 The figure shows a state where the second clutch component and the fourth clutch component are meshed with each other while the first clutch component and the third clutch component are meshed with each other when the differential is released according to a preferred embodiment of the present invention.

[0038] Figure 5 The diagram shows a disengaged state of the second clutch component and the fourth clutch component and an engaged state of the first clutch component and the third clutch component in two-wheel drive according to a preferred embodiment of the present invention.

[0039] Figure 6 FIG. 1 is a diagram showing an actuator device according to a preferred embodiment of the present invention.

[0040] In the figure:

[0041] 110: housing, 111: through hole, 120: support ring, 123: third clutch part, 130: first clutch ring, 131: first clutch part, 132: leg, 133: connecting member, 140: second clutch ring, 142: second clutch part, 143: locking part, 144: stopper, 145: step part, 145a: insertion groove, 151: one side half-shaft gear, 151a: fourth clutch part, 152: other side half-shaft gear, 153: pinion, 160: sleeve, 161: connecting part, 162: pressing surface, 170: fixing pin, 180: connecting pin, 190: power transmission member. DETAILED DESCRIPTION

[0042] Below, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that when marking the components of each drawing, the same components should be marked with the same reference numerals as much as possible even in different drawings. In addition, when describing the present invention, if it is determined that the specific description of the relevant known structure or function will make the gist of the present invention unclear, the detailed description will be omitted. In addition, although the following describes a preferred embodiment of the present invention, the technical concept of the present invention is not limited to or restricted thereto, and can be modified and implemented in various ways by ordinary technicians in the field.

[0043] The present invention can be applied not only to electric vehicles (EV), but also to internal combustion engine vehicles (ICE), hybrid electric vehicles (HEV), etc.

[0044] Figure 1 is a perspective view showing a disconnection device according to a preferred embodiment of the present invention, Figure 2 is a side sectional view of a disconnection device according to a preferred embodiment of the present invention.

[0045] like Figure 1 and Figure 2As shown, the present invention comprises: a housing 110; a first clutch ring 130 for four-wheel drive; and a second clutch ring 140 for releasing the differential.

[0046] The housing 110 may be internally equipped with a support ring 120 , a pinion gear 153 , a side shaft gear 151 on one side meshed with the pinion gear 153 , and a side shaft gear 152 on the other side.

[0047] A portion of the first clutch ring 130 is coupled to the inside of the housing 110 , and a portion may be exposed to the outside of the housing 110 .

[0048] A power transmission member 190 such as a main transmission gear or a reduction gear may be connected to the outer side of the housing 110. Power from a power generating device (not shown) such as an engine or a drive motor may be transmitted to the power transmission member 190. The power transmitted to the power transmission member 190 may be transmitted to the housing 110.

[0049] The first clutch ring 130 includes a first clutch portion 131. The first clutch portion 131 may be disposed at one side of the first clutch ring 130 facing the support ring 120.

[0050] For example, the first clutch component 131 may be composed of a dog clutch.

[0051] The second clutch ring 140 may be inserted into the interior of the first clutch ring 130. The second clutch ring 140 includes a second clutch portion 142. The second clutch portion 142 may be disposed at one side of the second clutch ring 140 facing the side gear 151.

[0052] For example, the second clutch component 142 may be formed of a dog clutch.

[0053] The first clutch part 131 may be engaged with the third clutch part 123 provided on one side of the support ring 120. The second clutch part 142 may be engaged with the fourth clutch part 151a provided on one side of the side gear 151.

[0054] For example, the third clutch component 123 and the fourth clutch component 151a may be formed of dog clutches.

[0055] The first clutch ring 130 may have a plurality of legs 132. The legs 132 may extend from the other side of the first clutch ring 130 toward the sleeve 160. Ends of the legs 132 may be exposed to the outside through the through hole 111 of the housing 110. Ends of the legs 132 may be connected to the connection portion 161 of the sleeve 160.

[0056] For example, four leg portions 132 may be formed at equal intervals around the center of the first clutch ring 130 .

[0057] For example, the leg portion 132 may be connected to the connection portion 161 of the sleeve 160 by a coupling member 133 such as a bolt. For example, the leg portion 132 may also be connected to the connection portion 161 by welding.

[0058] The step portion 145 of the second clutch ring 140 may have an insertion groove 145 a. The insertion groove 145 a may be configured to correspond to the leg portions 132 of the plurality of first clutch rings 130.

[0059] The connection part 161 of the sleeve 160 may be inserted into the insertion groove 145a. The connection part 161 may be inserted into the insertion groove 145a and may be guided by the insertion groove 145a to stably operate.

[0060] A first elastic member S1 may be provided between the connection portion 161 of the sleeve 160 and the stopper 143 provided on the outer diameter portion of the second clutch ring 140. For example, the first elastic member S1 may be a return spring.

[0061] When the sleeve 160 moves in the direction of engagement with the support ring 120, etc., the first elastic member S1 is pressed and compressed by the connection portion 161 of the sleeve 160. When the pressure of the sleeve 160 disappears, the first elastic member S1 stretches and moves the sleeve 160 in the direction of disengagement.

[0062] The sleeve 160 can be moved in the disengagement direction by the elastic force of the first elastic member S1 while being locked to the stopper 144 provided on the other outer diameter portion of the second clutch ring 140 .

[0063] When the sleeve 160 is stuck on the stopper 144, it is pushed in the direction of disengagement by the elastic force of the first elastic component S1, thereby disengaging the second clutch part 142 and the fourth clutch part 151a and the first clutch part 131 and the third clutch part 123.

[0064] A pinion gear 153 may be installed inside the support ring 120 . The pinion gear 153 may mesh with the side gear 151 on one side and the side gear 151 on the other side opposite to the side gear 151 on the one side.

[0065] The coupling pin 180 may be coupled to penetrate the center of the pinion gear 153 at the outer diameter portion of the support ring 120. The fixing pin 170 may be coupled to penetrate the coupling pin 180 at one side of the support ring 120.

[0066] Figure 31 is a diagram showing a meshing state of a first clutch component and a third clutch component in a four-wheel drive according to a preferred embodiment of the present invention.

[0067] like Figure 1 and Figure 3 As shown, a first movement of the sleeve 160 may be performed by a first operation of the actuator device 200 .

[0068] The sleeve 160 moves the set first stroke ST while performing the first action, and pushes the first clutch ring 130 toward the support ring 120, so that the first clutch part 131 of the first clutch ring 130 can mesh with the third clutch part 123 of the support ring 120. Thus, four-wheel drive can be achieved.

[0069] At the same time, the pressing surface 162 of the sleeve 160 facing the support ring 120 may contact the step portion 145 provided on the other side outer diameter portion of the second clutch ring 140 .

[0070] Figure 4 The figure shows a state where the second clutch component and the fourth clutch component are engaged with each other while the first clutch component and the third clutch component are engaged with each other when the differential is released according to a preferred embodiment of the present invention.

[0071] like Figure 4 As shown, the second movement of the sleeve 160 can be accomplished by a second operation of the actuator device 200 .

[0072] The sleeve 160 moves the set second stroke while performing the second action, and pushes the step portion 145 in the direction of the side gear 151 while the pressing surface 162 contacts the step portion 145, so that the second clutch portion 142 of the second clutch ring 140 meshes with the fourth clutch portion 151a of the side gear 151. In this way, differential speed limitation can be achieved.

[0073] Figure 6 FIG. 1 is a diagram showing an actuator device according to a preferred embodiment of the present invention.

[0074] like Figure 2 and Figure 6 As shown, the sleeve 160 may be connected to a shift fork 270. The shift fork 270 may be disposed on the transfer nut 250 of the actuator device 200.

[0075] The actuator device 200 may include a housing 210, a motor 220, and a ball screw shaft 230. The motor 220 may be coupled to the housing 210. The ball screw shaft 230 may be connected to the motor 220 and may be rotated by driving the motor 220.

[0076] The ball screw shaft 230 may be rotatably supported inside the housing 210 via a support member 240 such as a bearing.

[0077] The transfer nut 250 may be disposed inside the housing 210. The transfer nut 250 is coupled to the ball screw shaft 230 and is guided by a guide rail 260 installed inside the housing 210. When the ball screw shaft 230 rotates, it may move along with the transfer nut 250.

[0078] A second elastic component S2 may be coupled to one side of the guide rail 260. For example, the second elastic component S2 may be a return spring. The second elastic component S2 may elastically support the guide rail 260.

[0079] One side of the second elastic member S2 may be inserted into the receiving hole 212 of the housing 210. The other side of the second elastic member S2 may be assembled to be caught in a catching protrusion 261 provided on one side of the guide rail 260.

[0080] The shift fork 270 may extend from the transfer nut 250 through the open portion 211 of the housing 210 toward the sleeve 160 . The shift fork 270 may be connected to the sleeve 160 .

[0081] Next, the operation of the four-wheel drive of the present invention will be described.

[0082] Reference Figure 1 and Figure 3 When the ball screw shaft 230 is rotated by driving the motor 220 of the actuator device 200, the transfer nut 250 may move.

[0083] When the transfer nut 250 moves, the shift fork 270 formed integrally with the transfer nut 250 can move the sleeve 160 .

[0084] Through the first operation of the actuator device 200 , the sleeve 160 can move a first stroke ST while performing a first motion.

[0085] When the sleeve 160 moves the first stroke ST while performing the first action, the first clutch ring 130 may be pushed by the sleeve 160 to move toward the support ring 120 .

[0086] When the first clutch ring 130 moves toward the support ring 120, the first clutch portion 131 of the first clutch ring 130 may mesh with the third clutch portion 123 of the support ring 120. Thus, four-wheel drive (4WD) may be achieved.

[0087] At this time, the pressing surface 162 of the sleeve 160 facing the support ring 120 may contact the step portion 145 of the second clutch ring 140 .

[0088] In the case of four-wheel drive, power from a power generation device (not shown) such as an engine or a drive motor can be transmitted to the power transmission member 190 .

[0089] The power of the power generating device may be transmitted to the housing 110 through the power transmitting member 190. When the housing 110 rotates, the support ring 120 may rotate. The support ring 120 is coupled to the first clutch ring 130 and may rotate together with the housing 110.

[0090] When the support ring 120 rotates together with the housing 110 , power is transmitted to the one side axle gear 151 and the other side axle gear 152 meshing with the pinion gear 153 , thereby rotating the one side axle gear 151 and the other side axle gear 152 .

[0091] When the side gear 151 on one side and the side gear 152 on the other side rotate, power is transmitted to the auxiliary drive wheels on both sides (not shown) connected to the side gear 151 on one side and the side gear 152 on the other side, thereby rotating the auxiliary drive wheels on both sides. In this way, it is possible to realize four-wheel drive in which the power of the power transmission device is transmitted not only to the main drive wheels (not shown) but also to the auxiliary drive wheels.

[0092] Next, the operation of the present invention when the differential is released will be described.

[0093] like Figure 2 and Figure 4 As shown, when the first clutch portion 131 is meshed with the third clutch portion 123 and the pressing surface 162 of the sleeve 160 contacts the step portion 145 of the second clutch ring 140 , the sleeve 160 moves the second stroke while performing the second action through the second operation of the actuator device 200 .

[0094] When the sleeve 160 performs the second action and moves the second stroke, the pressing surface 162 pushes the step portion 145 toward the side gear 151, so that the second clutch portion 142 of the second clutch ring 140 meshes with the fourth clutch portion 151a of the side gear 151, thereby releasing the differential.

[0095] For example, in the differential drive state, if one driving wheel of the car gets stuck in an uneven road such as a swamp, the left and right driving wheels are subject to different rotational resistances. Therefore, a relative speed difference will be generated between the half-shaft gear 151 on one side and the half-shaft gear 152 on the other side, causing the driving wheel stuck in the uneven road to spin idly and be unable to escape the uneven road.

[0096] However, in the present invention, in the differential limiting state where the first clutch portion 131 is meshed with the third clutch portion 123 and the second clutch portion 142 is meshed with the fourth clutch portion 151a, since the half-shaft gear 151 on one side and the half-shaft gear 152 on the other side rotate at the same speed, even if one side of the driving wheel falls into an uneven road such as a swamp, it can escape from the uneven road.

[0097] Next, the operation of the two-wheel drive of the present invention will be described.

[0098] Figure 5 The diagram shows a disengaged state of the second clutch component and the fourth clutch component and an engaged state of the first clutch component and the third clutch component in two-wheel drive according to a preferred embodiment of the present invention.

[0099] Reference Figure 2 , Figure 5 , Figure 6 When the first clutch portion 131 and the third clutch portion 123 are engaged and the second clutch portion 142 and the fourth clutch portion 151a are engaged, the first elastic component S1 is in a compressed state, and as the pressure of the sleeve 160 disappears, it stretches and moves the sleeve 160 in the direction of disengagement.

[0100] When the sleeve 160 moves in the disengagement direction due to the elastic force of the first elastic member S1, the engagement between the second clutch component 142 and the fourth clutch component 151a and the engagement between the first clutch component 131 and the third clutch component 123 can be disengaged, thereby achieving two-wheel drive (2WD).

[0101] In other embodiments, two-wheel drive may be achieved by disabling operation of the actuator device 200 .

[0102] Specifically, when the ball screw shaft 230 is rotated by driving the motor 220 of the actuator device 200 , the transfer nut 250 can move in a direction to release the meshing.

[0103] When the transfer nut 250 moves in the disengagement direction, the shift fork 270 formed integrally with the transfer nut 250 can move the sleeve 160 in the disengagement direction.

[0104] When the sleeve 160 moves in the disengagement direction, the engagement between the second clutch part 142 and the fourth clutch part 151a and the engagement between the first clutch part 131 and the third clutch part 123 can be disengaged. The first elastic member S1 helps the sleeve 160 to move in the disengagement direction.

[0105] When the engagement between the second clutch portion 142 and the fourth clutch portion 151a and the engagement between the first clutch portion 131 and the third clutch portion 123 are released, the power of the power generating device (not shown) such as the engine or drive motor is cut off, and therefore, the power of the power generating device will not be transmitted to the power transmission component 190.

[0106] The auxiliary drive wheels (not shown) on both sides coast, and the rotational force of the auxiliary drive wheels on both sides is transmitted to the side gear 151 on one side and the side gear 152 on the other side, so that the side gear 151 on one side and the side gear 152 on the other side can be rotated.

[0107] When the side gears 151 and 152 are meshed with the pinion 153 , the support ring 120 may rotate together with the side gears 151 and 152 when the side gears 151 and 152 rotate.

[0108] At this time, the support ring 120 can freely rotate inside the housing 110 in a state where the support ring 120 is disengaged from the first clutch ring 130 .

[0109] Thereby, two-wheel drive driving can be achieved in which the auxiliary drive wheel slides and only the main drive wheel is used for driving.

[0110] For example, since the electric vehicle runs at a high speed, high differential noise may be inevitably generated. However, the present invention can solve the existing problem of high differential noise generated when the support ring 120 rotates in the housing 110.

[0111] For example, for convenience, the operations of the actuator device 200 and the sleeve 160 are divided into a first operation and a second operation, but the first operation and the second operation of the actuator device 200 and the sleeve 160 are not interrupted but may be performed in one operation.

[0112] The above description is only used to exemplify the technical spirit of the present invention, and ordinary technicians in the field to which the present invention belongs can make various modifications, changes and substitutions without departing from the essential features of the present invention. Therefore, the embodiments and drawings disclosed in the present invention are not intended to limit but to illustrate the technical spirit of the present invention, and the scope of the technical spirit of the present invention should not be limited by the above embodiments and drawings. The scope of protection of the present invention should be interpreted by the scope of the attached claims, and it should be interpreted that all technical ideas within the scope equivalent to them should be included in the scope of the claims of the present invention.

Claims

1. A disconnect device, characterized in that: include: A housing having a support ring and a side axle gear inside, wherein the side axle gear is meshed with a pinion gear inside the support ring; a first clutch ring connected to the sleeve and having a first clutch portion on a side facing the support ring; and A second clutch ring is inserted into the first clutch ring and has a second clutch portion on the side facing the side gear and is connected to the sleeve on the other side outer diameter portion. By a first movement of the sleeve caused by a first operation of an actuator device connected to the sleeve, the first clutch ring is pushed toward the support ring, and the first clutch portion is engaged with the third clutch portion of the support ring to achieve four-wheel drive.

2. The disconnect device according to claim 1, characterized in that: When the first clutch part and the third clutch part are in meshing state, the second movement of the sleeve caused by the second operation of the actuator device pushes the second clutch ring in the direction of the one side half-shaft gear, and at the same time, the second clutch part is meshed with the fourth clutch part of the one side half-shaft gear to achieve differential limitation.

3. The disconnect device according to claim 1, characterized in that: The first clutch ring has a plurality of legs extending from the other side of the first clutch ring toward the sleeve, and ends of the legs are exposed to the outside through the through holes of the housing and connected to the connecting portion of the sleeve.

4. The disconnect device according to claim 3, characterized in that: The sleeve moves the set first stroke while performing the first action, and pushes the first clutch ring in the direction of the support ring so that the first clutch portion of the first clutch ring is engaged with the third clutch portion of the support ring, and at the same time, the pressing surface facing one side of the support ring contacts the step portion provided on the outer diameter portion on the other side of the second clutch ring.

5. The disconnect device according to claim 4, characterized in that: The sleeve moves the set second stroke while performing the second action, and, while the pressing surface is in contact with the step portion, pushes the step portion in the direction of the one side half-shaft gear, so that the second clutch portion of the second clutch ring is meshed with the fourth clutch portion of the one side half-shaft gear.

6. The disconnect device according to claim 5, characterized in that The step portion has an insertion groove into which the connecting portion of the sleeve is inserted.

7. The disconnect device according to claim 3, characterized in that: A first elastic member is provided between the connecting portion of the sleeve and a locking portion provided on the outer diameter portion of the second clutch ring.

8. The disconnect device according to claim 7, characterized in that When the sleeve moves in the engagement direction, the first elastic member is pressed by the connection portion and compressed. When the pressure of the sleeve disappears, the first elastic member is stretched and the sleeve moves in the disengagement direction.

9. The disconnect device according to claim 8, characterized in that The sleeve moves in a direction of disengaging the meshing while being locked to a stopper provided on the outer diameter portion of the second clutch ring by the elastic force of the first elastic member.

10. The disconnect device according to claim 2, characterized in that: The first clutch component, the second clutch component, the third clutch component, and the fourth clutch component are configured by dog ​​clutches.

11. The disconnect device according to claim 1, characterized in that The sleeve is connected to a shift fork, and the shift fork is arranged on a transfer nut of the actuator device.

12. The disconnect device according to claim 11, characterized in that The actuator device comprises: shell; a motor coupled to the housing; and A ball screw shaft connected to the motor, The transfer nut is coupled to the ball screw shaft and is guided by a guide rail installed inside the housing so as to be movable along the ball screw shaft. The shift fork extends from the transfer nut toward the sleeve through an open portion of the housing and is connected to the sleeve.

13. The disconnect device according to claim 12, characterized in that One side of the guide rail is elastically supported by a second elastic component, and the second elastic component is assembled so that one side is inserted into the receiving hole of the shell and the other side is clamped on a clamping protrusion arranged on one side of the guide rail.

14. The disconnect device according to claim 1, characterized in that The pinion gear is meshed with the side shaft gear on the other side opposite to the side shaft gear on the one side.

15. The disconnect device according to claim 14, characterized in that A coupling pin is coupled to an outer diameter portion of the support ring in such a manner as to penetrate the center of the pinion gear.

16. The disconnect device according to claim 15, characterized in that A fixing pin is connected to one side of the support ring in a manner of penetrating the connecting pin.

Images