Disconnector apparatus

Abstract

To provide a disconnector apparatus that allows power switching between two-wheel drive and four-wheel drive.SOLUTION: A disconnector apparatus includes: a casing having therein a support ring and a one-side gear, the one-side gear engaging with a pinion gear inside the support ring; a first clutch ring connected to a sleeve and having a first clutch part provided at one side directed toward the support ring; and a second clutch ring inserted into the first clutch ring and having a second clutch part provided at one side directed toward the one-side gear, the second clutch ring having an other-side outer-diameter portion to which the sleeve is coupled.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a disconnector device capable of switching between four-wheel drive and two-wheel drive. [Background technology]

[0002] In general, a disconnector device is a device that is attached to a differential assembly and can minimize unnecessary power loss by disconnecting or connecting the differential shaft depending on the driving conditions to switch between two-wheel drive (2WD) and four-wheel drive (4WD).

[0003] A conventional disconnector device includes a differential assembly, a disconnector shaft connected to a right differential side gear provided inside a differential case, a disconnector hub connected to a right wheel, and a disconnector sleeve for connecting or disconnecting the power between the disconnector shaft and the disconnector hub. When the disconnector sleeve simultaneously meshes with a dog gear portion of the disconnector shaft and a dog gear portion of the disconnector hub, the power of an input portion such as a motor or an engine and an output portion such as wheels are connected to each other, thereby realizing a four-wheel drive (4WD). When the disconnector sleeve moves toward the disconnector hub and the meshing state between the dog gear portion of the disconnector shaft and the dog gear portion of the disconnector hub is released, the power of an input portion such as a motor or an engine and an output portion such as wheels are disconnected to realize a two-wheel drive (2WD).

[0004] However, in the conventional disconnector device, the ball screw shaft, the fork, and the disconnector sleeve are operated in conjunction with each other by the operation of the motor, and the disconnector shaft and the disconnector hub are connected by the operation of the disconnector sleeve, which causes the overall length of the vehicle to become excessively large due to a complex operating structure, which takes up a lot of space in the vehicle, and is detrimental to the weight and installation in the vehicle. Also, in the case of a two-wheel drive in which the auxiliary drive wheels of a four-wheel drive vehicle are disconnected, when the rotation of the input part is stopped, the final gear is stopped, and the disconnector shaft and the disconnector hub are separated, a high differential occurs in which the differential pinion gear rotates at high speed due to the rotation of the left differential side gear when the vehicle is traveling straight at high speed, which causes noise and vibration. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Republic of Korea Patent Publication No. 10-2017-0123869 (Published on November 9, 2017) Summary of the Invention [Problem to be solved by the invention]

[0006] In order to solve the above-mentioned problems, the present invention aims to provide a disconnector device in which a first operation of the sleeve causes the first clutch portion of the first clutch ring to mesh with the third clutch portion of the support ring to realize four-wheel drive, or a second operation of the sleeve causes the second clutch portion of the second clutch ring to mesh with the fourth clutch portion of the one-side side gear when the first clutch portion and the third clutch portion are in an engaged state, thereby realizing differential limiting. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the present invention provides a disconnector device comprising: a case having a support ring and one side gear therein, the one side gear meshing with a pinion gear inside the support ring; a first clutch ring connected to a sleeve and having a first clutch portion on one side facing the support ring; and a second clutch ring inserted inside the first clutch ring, having a second clutch portion on one side facing the one side gear and having the sleeve connected to an outer diameter portion on the other side; wherein a first operation of the sleeve due to a first operation of an actuator device connected to the sleeve pushes the first clutch ring in the direction of the support ring, and the first clutch portion meshes with a third clutch portion of the support ring, thereby realizing four-wheel drive.

[0008] In addition, when the first clutch portion and the third clutch portion are in an engaged state, the second clutch ring is pushed toward the one side gear by the second operation of the sleeve due to the second operation of the actuator device, and the second clutch portion is engaged with the fourth clutch portion of the one side gear, thereby achieving differential limiting.

[0009] In addition, the first clutch ring may have a plurality of legs extending toward the sleeve on the other side of the first clutch ring, and end portions of the legs may be exposed to the outside through through holes in the case and connected to the connecting portions of the sleeve.

[0010] In addition, during a first operation, the sleeve moves by a set first stroke and pushes the first clutch ring toward 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 one side pressure surface facing the support ring can come into contact with a stepped portion provided on the other side outer diameter portion of the second clutch ring.

[0011] In addition, during a second operation, the sleeve may move by a set second stroke, with the pressure surface in contact with the stepped portion and pushing the stepped portion toward the one side gear, so that the second clutch portion of the second clutch ring may be engaged with the fourth clutch portion of the one side gear.

[0012] The step portion may include an insertion groove into which the connecting portion of the sleeve is inserted.

[0013] Also, a first elastic member may be provided between the connecting portion of the sleeve and a locking portion provided on an outer diameter portion of the second clutch ring.

[0014] In addition, the first elastic member is compressed by being pressed against the connecting portion when the sleeve moves in the engagement direction, and expands when the pressure on the sleeve is removed, thereby moving the sleeve in the disengagement direction.

[0015] Further, the sleeve can move in the disengagement direction while being stopped by a stopper provided on the outer diameter portion of the second clutch ring by the elastic force of the first elastic member.

[0016] Moreover, the first clutch portion, the second clutch portion, the third clutch portion, and the fourth clutch portion may be configured as dog clutches.

[0017] The sleeve may also be coupled to a fork, the fork being provided on a transport nut of the actuator device.

[0018] The actuator device may include a housing; a motor coupled to the housing; and a ball screw shaft connected to the motor. The transport nut may be coupled to the ball screw shaft and may move along the ball screw shaft while being guided by a guide rail mounted inside the housing. The fork may extend from the transport nut toward the sleeve through an opening of the housing and be connected to the sleeve.

[0019] In addition, the guide rail may be elastically supported at one side by a second elastic member, and the second elastic member may be assembled so that one side is inserted into the receiving hole of the housing and the other side is engaged with an engaging protrusion provided on one side of the guide rail.

[0020] Also, the pinion gear may be meshed with the other side gear opposite to the one side gear.

[0021] Also, a coupling pin may be coupled to the outer diameter portion of the support ring so as to pass through the center of the pinion gear.

[0022] Also, a fixing pin may be coupled to one side of the support ring so as to pass through the coupling pin. Effect of the Invention

[0023] According to the present invention, the first clutch portion of the first clutch ring is engaged with the third clutch portion of the support ring by the first actuation of the sleeve, thereby realizing four-wheel drive.

[0024] In addition, in the present invention, by the second operation of the sleeve, when the first clutch portion and the third clutch portion are in an engaged state, the second clutch portion of the second clutch ring is engaged with the fourth clutch portion of the one side gear, thereby realizing differential limitation.

[0025] In addition, in the case of an auxiliary drive wheel that coasts when traveling in two-wheel drive mode by disengaging the second clutch portion from the fourth clutch portion and disengaging the first clutch portion from the second clutch portion, the present invention can solve the noise problem caused by the conventional high differential by rotating a support ring that supports a differential gear set including two side gears and four pinion gears together.

[0026] Furthermore, the present invention facilitates assembly and repair through modularization of the actuator device, thereby reducing the defect rate.

[0027] Furthermore, the present invention can significantly reduce the overall length, thereby significantly improving the weight and packaging mountability.

[0028] Furthermore, the present invention can eliminate parts such as the conventional disconnector shaft, and the number of parts is reduced by modularizing the actuator device, which is advantageous in terms of space, weight, and cost.

[0029] Furthermore, the present invention can simplify the assembly process by modularizing the actuator device.

[0030] In addition, by modularizing the actuator device of the present invention, it can be installed on any reducer as long as there is enough space to install the first clutch ring and support ring, thereby shortening development time and providing high versatility. [Brief description of the drawings]

[0031] [Figure 1] 1 is a perspective view of a disconnector device according to a preferred embodiment of the present invention; FIG. [Diagram 2] 1 is a side cross-sectional view of a disconnector device according to a preferred embodiment of the present invention; [Diagram 3] 4 is a view showing a state in which a first clutch portion is engaged with a third clutch portion during four-wheel drive according to a preferred embodiment of the present invention. [Figure 4] 4 is a view showing a state in which a first clutch portion is engaged with a third clutch portion and a second clutch portion is engaged with a fourth clutch portion during differential disengagement according to a preferred embodiment of the present invention. [Diagram 5] 4 is a view showing a state in which a second clutch portion and a fourth clutch portion are disengaged and a state in which a first clutch portion and a third clutch portion are disengaged during two-wheel drive according to a preferred embodiment of the present invention. [Figure 6] 1 is a diagram showing an actuator device according to a preferred embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, when referring to components in each drawing, it should be noted that the same components are referred to by the same reference numerals as much as possible even if they are shown in different drawings. In addition, when describing the present invention, detailed descriptions of related known configurations or functions are omitted if it is determined that such descriptions may obscure the gist of the present invention. Hereinafter, preferred embodiments of the present invention will be described, but the technical concept of the present invention is not limited thereto, and may be modified and variously implemented by those skilled in the art.

[0033] The present invention can be applied to electric vehicles (battery electric vehicles, EVs), internal combustion engine vehicles (ICEs), hybrid electric vehicles (HEVs), and the like.

[0034] FIG. 1 is a perspective view of a disconnector device according to a preferred embodiment of the present invention, and FIG. 2 is a side sectional view of the disconnector device according to a preferred embodiment of the present invention.

[0035] As shown in Figures 1 and 2, the present invention includes a case 110, a first clutch ring 130 for four-wheel drive, and a second clutch ring 140 for differential disengagement.

[0036] The case 110 may have a support ring 120, a pinion gear 153, a side gear 151 meshed with the pinion gear 153, and a side gear 152 on one side mounted therein.

[0037] A portion of the first clutch ring 130 may be coupled to the inside of the case 110 and a portion of the first clutch ring 130 may be exposed to the outside of the case 110.

[0038] A power transmission member 190 such as a final gear or a reduction gear may be coupled to the outside of the case 110. Power from a power generating device (not shown) such as an engine or a driving motor may be transmitted to the power transmission member 190. The power transmitted to the power transmission member 190 may be transmitted to the case 110.

[0039] The first clutch ring 130 includes a first clutch portion 131. The first clutch portion 131 may be provided on one side of the first clutch ring 130 facing the support ring 120.

[0040] For example, the first clutch portion 131 may be configured as a dog clutch.

[0041] The second clutch ring 140 may be inserted inside the first clutch ring 130. The second clutch ring 140 includes a second clutch portion 142. The second clutch portion 142 may be provided on one side of the second clutch ring 140 facing the one side gear 151.

[0042] For example, the second clutch portion 142 may be configured as a dog clutch.

[0043] The first clutch portion 131 may be meshed with a third clutch portion 123 provided on one side of the support ring 120. The second clutch portion 142 may be meshed with a fourth clutch portion 151a provided on one side of the side gear 151 on one side.

[0044] For example, the third clutch component 123 and the fourth clutch component 151a may be configured as dog clutches.

[0045] The first clutch ring 130 may include a plurality of legs 132. The legs 132 may extend toward the sleeve 160 on the other side of the first clutch ring 130. Ends of the legs 132 may be exposed to the outside through the through-hole 111 of the case 110. The end of the legs 132 may be connected to a connection portion 161 of the sleeve 160.

[0046] For example, four legs 132 may be formed at equal intervals with the center of the first clutch ring 130 as the axis.

[0047] For example, the leg 132 may be connected to the connecting portion 161 of the sleeve 160 by a connecting member 133 such as a bolt. For example, the leg 132 may be connected to the connecting portion 161 by welding.

[0048] An insertion groove 145a may be provided in the step portion 145 of the second clutch ring 140. The insertion groove 145a may be configured to match the leg portion 132 of the first clutch ring 130, which is configured in plurality.

[0049] A connecting portion 161 of a sleeve 160 may be inserted into the insertion groove 145a. When the connecting portion 161 is inserted into the insertion groove 145a, the connecting portion 161 may be guided by the insertion groove 145a and thus may operate stably.

[0050] A first elastic member S1 may be provided between the connecting portion 161 of the sleeve 160 and a locking portion 143 provided on the outer periphery of the second clutch ring 140. For example, the first elastic member S1 may be a return spring.

[0051] The first elastic member S1 may be compressed by pressure applied by the connecting portion 161 of the sleeve 160 when the sleeve 160 moves in a direction to engage with the support ring 120. When the pressure applied by the sleeve 160 is removed, the first elastic member S1 may expand and move the sleeve 160 in a direction to disengage.

[0052] The sleeve 160 can move in the disengagement direction while being stopped by a stopper 144 provided on the other outer diameter portion of the second clutch ring 140 due to the elastic force of the first elastic member S1.

[0053] With the sleeve 160 engaged with the stopper 144, the sleeve 160 is pushed in the disengagement direction by the elastic force of the first elastic member S1, thereby achieving disengagement between the second clutch portion 142 and the fourth clutch portion 151a, and disengagement between the first clutch portion 131 and the third clutch portion 123.

[0054] A pinion gear 153 may be mounted inside the support ring 120. The pinion gear 153 may be meshed with one side gear 151 and the other side gear 152 facing the one side gear 151.

[0055] A connecting pin 180 may be connected to the outer diameter portion of the support ring 120 so as to pass through the center of the pinion gear 153. A fixing pin 170 may be connected to one side of the support ring 120 so as to pass through the connecting pin 180.

[0056] FIG. 3 is a view showing a state in which the first clutch portion is engaged with the third clutch portion during four-wheel drive according to a preferred embodiment of the present invention.

[0057] As shown in FIGS. 1 and 3, a first actuation of the actuator device 200 may result in a first actuation of the sleeve 160 .

[0058] During the first actuation, the sleeve 160 moves by a set first stroke ST and pushes the first clutch ring 130 toward the support ring 120 so that the first clutch portion 131 of the first clutch ring 130 is engaged with the third clutch portion 123 of the support ring 120. Thus, four-wheel drive can be achieved.

[0059] At the same time, the pressure surface 162 of the sleeve 160 facing the support ring 120 can come into contact with a step portion 145 provided on the outer diameter portion on the other side of the second clutch ring 140 .

[0060] FIG. 4 is a view showing a state in which the first clutch portion is engaged with the third clutch portion and the second clutch portion is engaged with the fourth clutch portion during differential disengagement according to a preferred embodiment of the present invention.

[0061] As shown in FIG. 4, a second actuation of the actuator device 200 may result in a second actuation of the sleeve 160 .

[0062] During the second actuation, the sleeve 160 moves by the set second stroke and presses the stepped portion 145 toward the one side gear 151 with the pressing surface 162 in contact with the stepped portion 145, so that the second clutch portion 142 of the second clutch ring 140 may be engaged with the fourth clutch portion 151a of the one side gear 151. This allows a limited differential to be achieved.

[0063] FIG. 6 is a diagram showing an actuator device according to a preferred embodiment of the present invention.

[0064] 2 and 6, the sleeve 160 may be coupled with a fork 270. The fork 270 may be provided on the transport nut 250 of the actuator device 200.

[0065] 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 coupled to the motor 220 and may be rotated by being driven by the motor 220.

[0066] The ball screw shaft 230 may be rotatably supported within the housing 210 by a support member 240 such as a bearing.

[0067] The transport nut 250 may be provided inside the housing 210. The transport nut 250 is coupled to the ball screw shaft 230 and is guided by a guide rail 260 mounted inside the housing 210 so as to move along the ball screw shaft 230 when the ball screw shaft 230 rotates.

[0068] A second elastic member S2 may be coupled to one side of the guide rail 260. For example, the second elastic member S2 may be a return spring. The second elastic member S2 may elastically support the guide rail 260.

[0069] One side of the second elastic member S2 may be inserted into the receiving hole 212 of the housing 210.

[0070] The other side of the second elastic member S2 may be assembled to be locked to a locking protrusion 261 provided on one side of the guide rail 260.

[0071] The fork 270 may extend from the transport nut 250 through the opening 211 of the housing 210 toward the sleeve 160. The fork 270 may be coupled to the sleeve 160.

[0072] The operation of the present invention in four-wheel drive mode will now be described.

[0073] 1 and 3, a motor 220 of the actuator device 200 drives a ball screw shaft 230 to rotate, which in turn can move a transport nut 250. As shown in FIG.

[0074] As the transport nut 250 moves, a fork 270 formed integrally with the transport nut 250 can move the sleeve 160 .

[0075] The first actuation of the actuator device 200 allows the sleeve 160 to move a first stroke ST while performing the first actuation.

[0076] As the sleeve 160 moves by the first stroke ST while performing the first actuation, the first clutch ring 130 is pushed by the sleeve 160 and can move in the direction of the support ring 120 .

[0077] As the first clutch ring 130 moves toward the support ring 120, the first clutch portion 131 of the first clutch ring 130 may be engaged with the third clutch portion 123 of the support ring 120. As a result, a four-wheel drive (4WD) may be realized.

[0078] At this time, the pressing surface 162 of the sleeve 160 facing the support ring 120 may come into contact with the stepped portion 145 of the second clutch ring 140 .

[0079] In the case of four-wheel drive, the power of a power generating device (not shown) such as an engine or a drive motor can be transmitted to a power transmission member 190 .

[0080] Power of the power generating device may be transmitted to the case 110 via the power transmission member 190. When the case 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 case 110.

[0081] As the support ring 120 rotates together with the case 110, power is transmitted to the one side gear 151 and the other side gear 152 meshed with the pinion gear 153, so that the one side gear 151 and the other side gear 152 can rotate.

[0082] As one side gear 151 and the other side gear 152 rotate, power is transmitted to auxiliary driving wheels (not shown) on both sides connected to the one side gear 151 and the other side gear 152, and the auxiliary driving wheels on both sides can rotate. As a result, a four-wheel drive system can be realized in which the power of the power transmission device is transmitted to the auxiliary driving wheels as well as the main driving wheels (not shown).

[0083] Next, the operation of the present invention when the differential is released will be described.

[0084] As shown in Figures 2 and 4, the first clutch portion 131 is engaged with the third clutch portion 123, and the pressure surface 162 of the sleeve 160 is in contact with the step portion 145 of the second clutch ring 140. In this state, the sleeve 160 can move by a second stroke while performing a second operation due to the second operation of the actuator device 200.

[0085] As the sleeve 160 moves by the second stroke while performing the second actuation, the pressure surface 162 presses the stepped portion 145 toward the one side gear 151, so that the second clutch portion 142 of the second clutch ring 140 is engaged with the fourth clutch portion 151a of the one side gear 151. This allows the differential limiting to be achieved.

[0086] For example, in the differential drive state, if one of the drive wheels of the vehicle gets stuck on a rough road such as a muddy quagmire, the left and right drive wheels experience different rotational resistance, which causes a relative speed difference to occur between the side gear 151 on one side and the side gear 152 on the other side. This causes the drive wheel stuck on the rough road to spin freely, making it impossible to escape from the rough road.

[0087] However, in the present invention, in a differential limited state in which the first clutch portion 131 is engaged with the third clutch portion 123 and the second clutch portion 142 is engaged with the fourth clutch portion 151a, the one side side gear 151 and the other side side gear 152 rotate at the same speed, so even if one of the driving wheels gets stuck in a rough road such as a muddy quagmire, it is possible to escape from the rough road.

[0088] Next, the operation of the present invention in two-wheel drive will be described.

[0089] FIG. 5 is a view showing a state in which the second clutch portion and the fourth clutch portion are disengaged and the first clutch portion and the third clutch portion are disengaged during two-wheel drive according to a preferred embodiment of the present invention.

[0090] As shown in Figures 2, 5, and 6, the first elastic member S1, which was compressed when the first clutch portion 131 and the third clutch portion 123 engaged with each other and when the second clutch portion 142 and the fourth clutch portion 151a engaged with each other, expands to its original state when the pressure applied by the sleeve 160 is removed, allowing the sleeve 160 to move in the disengagement direction.

[0091] The elastic force of the first elastic member S1 moves the sleeve 160 in the disengagement direction, thereby realizing disengagement between the second clutch portion 142 and the fourth clutch portion 151a and disengagement between the first clutch portion 131 and the third clutch portion 123. This allows two-wheel drive (2WD) to be achieved.

[0092] In another embodiment, two-wheel drive may be achieved by deactivating the actuator device 200 .

[0093] Specifically, the ball screw shaft 230 is rotated by the driving of the motor 220 of the actuator device 200, thereby allowing the transport nut 250 to move in the disengagement direction.

[0094] As the transport nut 250 moves in the disengagement direction, the fork 270 formed integrally with the transport nut 250 can move the sleeve 160 in the disengagement direction.

[0095] The movement of the sleeve 160 in the disengagement direction can realize disengagement between the second clutch portion 142 and the fourth clutch portion 151a and disengagement between the first clutch portion 131 and the third clutch portion 123. The first elastic member S1 helps the sleeve 160 move in the disengagement direction.

[0096] When the second clutch portion 142 and the fourth clutch portion 151a are disengaged and when the first clutch portion 131 and the third clutch portion 123 are disengaged, the power of a power generating device (not shown) such as an engine or a drive motor is cut off and the power of the power generating device is not transmitted to the power transmission member 190.

[0097] The auxiliary driving wheels (not shown) on both sides coast, and the rotational force of the auxiliary driving wheels on both sides is transmitted to one side side gear 151 and the other side side gear 152, so that the one side side gear 151 and the other side side gear 152 can rotate.

[0098] The one side gear 151 and the other side gear 152 rotate in a state of meshing with the pinion gear 153 , so that the support ring 120 can also rotate together with the one side gear 151 and the other side gear 152 .

[0099] At this time, the support ring 120 can freely rotate inside the case 110 in a disengaged state with the first clutch ring 130. As a result, two-wheel drive running in which only the main drive wheels run while the auxiliary drive wheels run by coasting can be realized.

[0100] For example, electric vehicles operate at high revolution speeds, which inevitably generates high differential noise. However, the present invention can solve the conventional problem of high differential noise generation by rotating the support ring 120 inside the case 110.

[0101] For example, although the operation of the actuator device 200 and the sleeve 160 has been divided into a first operation and a second operation for convenience, the first operation and the second operation of the actuator device 200 and the sleeve 160 may be performed in a single operation without interruption.

[0102] The above description is merely illustrative of the technical idea of ​​the present invention, and a person having ordinary knowledge in the technical field to which the present invention belongs can make various modifications, changes, and substitutions without departing from the essential characteristics of the present invention. Therefore, the embodiments and the attached drawings disclosed in the present invention are for the purpose of explaining, not limiting, the technical idea of ​​the present invention, and the scope of the technical idea of ​​the present invention is not limited by such embodiments and the attached drawings. The scope of protection of the present invention should be interpreted by the claims, and all technical ideas within the equivalent range should be interpreted as being included in the scope of the present invention. [Explanation of symbols]

[0103] 110 ···Case 111 ...Through hole 120 ···Support ring 123 Third clutch section 130 ···First clutch ring 131 First clutch section 132...legs 133 ...Connecting member 140 ···Second clutch ring 142 Second clutch section 143 ... Locking portion 144 Stopper 145 ... Step 145a Insertion groove 151 One side gear 151a Fourth clutch part 152 Other side gear 153 Pinion gear 160 Sleeve 161...Connection part 162 Pressure surface 170 ···Fixing pin 180 ···Connecting pin 190 Power transmission member

Claims

1. A case having a support ring and a side gear on one side therein, the side gear on one side meshing with a pinion gear on the inside of the support ring; a first clutch ring coupled to the sleeve and including a first clutch portion on one side facing the support ring; and a second clutch ring which is inserted into the first clutch ring and has a second clutch portion on one side facing the one side gear and has the sleeve coupled to an outer diameter portion on the other side; Including, The first clutch ring is pushed toward the support ring by a first operation of the sleeve caused by a first operation of an actuator device connected to the sleeve, and the first clutch portion is engaged with a third clutch portion of the support ring, thereby realizing four-wheel drive. A disconnector device comprising:

2. In a state where the first clutch portion and the third clutch portion are engaged with each other, the second clutch ring is pushed toward the one side gear by a second operation of the sleeve due to a second operation of the actuator device, and the second clutch portion is engaged with the fourth clutch portion of the one side gear, thereby realizing a differential limiting.

2. A disconnector device according to claim 1 , characterized in that it comprises:

3. The first clutch ring has a plurality of legs, the legs extending toward the sleeve on the other side of the first clutch ring, and end portions of the legs are exposed to the outside through through holes of the case and are connected to the connecting portions of the sleeve.

2. A disconnector device according to claim 1 , characterized in that it comprises:

4. The sleeve is In the first operation, the first clutch ring is pushed toward the support ring while moving by a set first stroke 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 pressure surface facing the support ring is brought into contact with a step portion provided on the other side outer diameter portion of the second clutch ring.

4. A disconnector device according to claim 3, characterized in that it is

5. The sleeve is During a second operation, the pressurizing surface moves by a set second stroke, and in a state of contact with the stepped portion, the stepped portion is pushed toward the one side gear, so that the second clutch portion of the second clutch ring is engaged with the fourth clutch portion of the one side gear.

5. A disconnector device according to claim 4, characterized in that it is

6. The step portion is The sleeve has an insertion groove into which the connecting portion is inserted.

6. A disconnector device according to claim 5, characterized in that

7. A first elastic member is provided between the connecting portion of the sleeve and a locking portion provided on an outer diameter portion of the second clutch ring.

4. A disconnector device according to claim 3, characterized in that it is

8. The first elastic member is When the sleeve moves in the engagement direction, it is compressed by pressure applied to the connecting portion, and when the pressure applied to the sleeve is removed, it expands, moving the sleeve in the disengagement direction.

8. A disconnector device according to claim 7, characterized in that it

9. The sleeve is The second clutch ring is moved in a disengagement direction by the elastic force of the first elastic member while being stopped by a stopper provided on the outer periphery of the second clutch ring.

9. A disconnector device according to claim 8, characterized in that

10. The first clutch portion, the second clutch portion, the third clutch portion, and the fourth clutch portion are configured as dog clutches.

3. A disconnector device according to claim 2, characterized in that it is

11. The sleeve is connected to a fork, the fork being provided on a transfer nut of the actuator device.

2. A disconnector device according to claim 1 , characterized in that it comprises:

12. The actuator device comprises: housing; a motor coupled to the housing; and a ball screw shaft coupled to the motor; Including, The transport nut is coupled to the ball screw shaft and is movable along the ball screw shaft while being guided by a guide rail installed inside the housing, and the fork is extended from the transport nut toward the sleeve through an opening of the housing and is connected to the sleeve.

12. A disconnector device according to claim 11 , characterized in that

13. The guide rail is elastically supported at one side by a second elastic member, and the second elastic member is assembled so that one side is inserted into the receiving hole of the housing and the other side is engaged with an engaging protrusion provided on one side of the guide rail.

13. A disconnector device according to claim 12, characterized in that

14. The pinion gear is The side gear is meshed with the other side gear that faces the one side side gear.

2. A disconnector device according to claim 1 , characterized in that it comprises:

15. A coupling pin is coupled to the outer diameter portion of the support ring so as to pass through the center of the pinion gear.

15. A disconnector device according to claim 14, characterized in that

16. A fixing pin is connected to one side of the support ring so as to pass through the connecting pin.

16. A disconnector device according to claim 15, characterized in that

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