Disconnector device

Abstract

To provide a disconnector device in which either, a first clutch part of a first clutch ring is engaged with a third clutch part of a case according to a first operation of a sleeve, so that four-wheel drive is performed, or a second clutch part of a second clutch ring is engaged with a fourth clutch part of one-side side gear in an engaged state of the first clutch part and the third clutch part, according to a second operation of the sleeve, so that differential limitation is performed.SOLUTION: A disconnector device comprises: a case; a first clutch ring provided with a first clutch part on an outer diameter part; and a second clutch ring whose one-side end is coupled to the first clutch ring, and which is provided with a second clutch part at one side toward a one-side side gear mounted inside the case, and in which the sleeve is bonded to the other-side outer diameter part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a disconnector device that is capable of switching between four-wheel drive and two-wheel drive and that is capable of limited slip differential. [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 switching between two-wheel drive (2WD) and four-wheel drive (4WD) by disconnecting or connecting the differential shaft depending on the driving conditions.

[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 is simultaneously meshed with a dog gear portion of the disconnector shaft and a dog gear portion of the disconnector hub, the power between an input portion such as a motor or an engine and an output portion such as wheels is connected, thereby enabling four-wheel drive (4WD, Four Wheel Drive). When the disconnector sleeve moves toward the disconnector hub and the meshed state between the dog gear portion of the disconnector shaft and the dog gear portion of the disconnector hub is released, the power between an input portion such as a motor or an engine and an output portion such as wheels is disconnected, thereby enabling two-wheel drive (2WD, Two Wheel Drive).

[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 makes the overall length of the vehicle large and occupies a lot of space in the vehicle, which is disadvantageous in terms of the weight and the ease of installation in the vehicle. In addition, 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 a 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 case to achieve 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 while the first clutch portion and the third clutch portion are in an engaged state, thereby achieving differential limitation. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the present invention provides a disconnector device comprising: a case; a first clutch ring having a first clutch portion on an outer diameter portion; and a second clutch ring having one side end connected to the first clutch ring, a second clutch portion on one side facing one side gear mounted inside the case, and a sleeve connected to the other side outer diameter portion; wherein the first clutch ring connected to the second clutch ring is inserted into the case by a first operation of the sleeve due to a first operation of an actuator device connected to the sleeve, and the first clutch portion is engaged with a third clutch portion provided on an inner diameter portion on one side of the case, thereby performing 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 moves toward the one side gear through a second operation of the sleeve caused by a second operation of the actuator device, and the second clutch portion is engaged with a fourth clutch portion provided on one side of the one side gear, thereby performing differential restriction.

[0009] Also, the first clutch ring may be connected to the sleeve by a spacer extending toward the sleeve from one side.

[0010] The first clutch portion and the third clutch portion may be formed of a spline clutch, and the second clutch portion and the fourth clutch portion may be formed of a dog clutch.

[0011] Also, a support ring may be provided inside the case, and a pinion gear may be provided inside the support ring, and the pinion gear may be meshed with the one-side side gear and the other-side side gear provided on both sides.

[0012] Also, a first gear portion may be formed on an inner diameter portion of the first clutch ring, and the first gear portion may be meshed with a second gear portion provided on an outer diameter portion of one side of the support ring.

[0013] Alternatively, the sleeve may be coupled to a fork, the fork being provided on a transport nut of the actuator device.

[0014] 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 being coupled to the ball screw shaft and movable along the ball screw shaft while being guided by a guide rail mounted inside the housing, and the fork may extend from the transport nut toward the sleeve through an opening of the housing and be connected to the sleeve inside the case through a through hole of the case.

[0015] In addition, the guide rail may be elastically supported by an elastic member coupled to one side end thereof, and the elastic member may be assembled such that one side end thereof is inserted into a groove of the housing and the other side end thereof is engaged with an engaging protrusion provided on the guide rail.

[0016] Also, a power transmission member may be provided on the outside of the case.

[0017] In addition, the power transmission member is a ring gear, and is capable of transmitting power transmitted from a power generating device to the case.

[0018] The power generating device may be an engine or a driving motor.

[0019] According to the present invention, the first clutch portion of the first clutch ring is engaged with the third clutch portion of the case by the first actuation of the sleeve, thereby enabling four-wheel drive. 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 performing differential limitation. In addition, in the case of an auxiliary drive wheel that coasts when traveling in a two-wheel drive mode by disengaging the second clutch portion from the fourth clutch portion and disengaging the first clutch portion from the third 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. Furthermore, the present invention makes it possible to simplify assembly and repair by modularizing the actuator device, thereby reducing the defect rate. Furthermore, the present invention can significantly reduce the overall length, thereby significantly improving the weight and packaging mountability. Furthermore, the present invention can eliminate parts such as the conventional disconnector shaft, and by modularizing the actuator device, the number of parts is reduced, which is advantageous in terms of space, weight, and cost. Furthermore, the present invention can simplify the assembly process by modularizing the actuator device. Furthermore, the present invention provides a modular actuator device that can be installed in all reducers as long as there is enough space to mount the first clutch ring and support ring, thereby shortening development time and providing high versatility. [Brief description of the drawings]

[0020] [Figure 1] 1 is a side cross-sectional view of a disconnector device according to a preferred embodiment of the present invention; [Diagram 2] 1 is a view showing a two-wheel drive state according to a preferred embodiment of the present invention; [Diagram 3] 2 is a view showing a four-wheel drive state according to a preferred embodiment of the present invention; [Figure 4] FIG. 2 is a side view showing a differential limited state according to a preferred embodiment of the present invention; [Diagram 5] FIG. 2 is a perspective view showing a differential restriction state according to a preferred embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] 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.

[0022] The present invention may be applied to vehicles such as internal combustion engine vehicles (ICEs), hybrid electric vehicles (HEVs), and electric vehicles (EVs).

[0023] FIG. 1 is a side sectional view of a disconnector device according to a preferred embodiment of the present invention, and FIG. 5 is a perspective view showing a differential limited state according to the preferred embodiment of the present invention.

[0024] As shown in Figures 1 and 5, the present invention can include a case 110, a first clutch ring 130 for Four Wheel Drive (4WD), and a second clutch ring 140 for limited slip differential.

[0025] 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.

[0026] A power transmission member 180 such as a ring gear may be provided on 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 180. The power transmitted to the power transmission member 180 may be transmitted to the case 110.

[0027] The first clutch ring 130 may include a first clutch portion 131 , and the first clutch portion 131 may be provided on an outer diameter portion of the first clutch ring 130 .

[0028] The second clutch ring 140 may include a second clutch portion 142 , and the second clutch portion 142 may be provided on one side of the second clutch ring 140 facing the one side gear 151 .

[0029] For example, the second clutch portion 142 may be a dog clutch.

[0030] The first clutch portion 131 may be meshed with a third clutch portion 113 provided on an inner diameter portion of one side of the case 110. The second clutch portion 142 may be meshed with a fourth clutch portion 151a provided on one side of the side gear 151.

[0031] For example, the first clutch portion 131 and the third clutch portion 113 may be configured as a spline clutch, and the second clutch portion 142 and the fourth clutch portion 151a may be configured as a dog clutch.

[0032] The first clutch ring 130 may be connected to the sleeve 160 by a spacer 170 .

[0033] The second clutch ring 140 may have one end passing through the sleeve 160 and the spacer 170 to be connected to the first clutch ring 130 .

[0034] The sleeve 160 may be coupled to an outer diameter portion of the second clutch ring 140. The sleeve 160 may be connected to the second clutch ring 140. When the sleeve 160 is moved, the first clutch ring 130 and the second clutch ring 140 may move together with the sleeve 160 in the meshing direction.

[0035] A pinion gear 153 may be installed inside the support ring 120. The pinion gear 153 may be meshed with a side gear 151 on one side and a side gear 152 on the other side.

[0036] A first actuation of the actuator device 200 may result in a first actuation of the sleeve 160 .

[0037] The sleeve 160 moves only the first stroke ST set during the first operation, and can move the first clutch ring 130 connected to the second clutch ring 140 in the direction of the third clutch portion 113 provided in the inner diameter portion of the case 110.

[0038] By the first actuation of the sleeve 160, the first clutch ring 130 is inserted into the case 110, and the first clutch portion 131 of the first clutch ring 130 may be engaged with the third clutch portion 113 of the case 110. As a result, four-wheel drive may be achieved.

[0039] A second actuation of the actuator device 200 may result in a second actuation of the sleeve 160 .

[0040] The sleeve 160 can move the second clutch ring 140 in the direction of the fourth clutch portion 151 a of the one side gear 151 while moving only by the second stroke set during the second actuation.

[0041] The second clutch ring 140 may move toward the fourth clutch portion 151a of the one side gear 151 by the sleeve 160, so that the second clutch portion 142 may be engaged with the fourth clutch portion 151a, thereby performing differential restriction.

[0042] The sleeve 160 may be coupled to a fork 270. The fork 270 may be provided on the transport nut 250 of the actuator device 200.

[0043] 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.

[0044] The ball screw shaft 230 may be rotatably supported inside the housing 210 by a support member such as a bearing.

[0045] 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 that the transport nut 250 can move along the ball screw shaft 230 when the ball screw shaft 230 rotates.

[0046] An elastic member S may be coupled to one side of the guide rail 260. For example, the elastic member S may be a return spring. The elastic member S may elastically support the guide rail 260.

[0047] One side of the elastic member S may be inserted into the groove 212 of the housing 210. The other side of the elastic member S may be assembled to be locked to a locking protrusion 261 provided on the guide rail 260.

[0048] The fork 270 may extend from the transport nut 250 toward the sleeve 160 through the opening 211 of the housing 210. The fork 270 may be connected to the sleeve 160 located inside the case 110 through the through hole 114 of the case 110. The fork 270 may move within the through hole 114 of the case 110.

[0049] A first gear portion 132 may be provided on an inner diameter portion of the first clutch ring 130. The first gear portion 132 may be meshed with a second gear portion 121 provided on an outer diameter portion of one side of the support ring 120.

[0050] Next, the operation of the present invention in four-wheel drive mode will be described.

[0051] FIG. 2 is a view showing a two-wheel drive state according to a preferred embodiment of the present invention, and FIG. 3 is a view showing a four-wheel drive state according to a preferred embodiment of the present invention.

[0052] As shown in Figures 1 to 3, in a two-wheel drive (2WD) state in which the first clutch portion 131 of the first clutch ring 130 and the third clutch portion 113 of the case 110 are disengaged, the ball screw shaft 230 is rotated by the drive of the motor 220 of the actuator device 200, and the transport nut 250 can move in the engagement direction.

[0053] As the transport nut 250 moves, a fork 270 formed integral with the transport nut 250 can move the sleeve 160 .

[0054] Specifically, the first actuation of the actuator device 200 allows the sleeve 160 to move a preset first stroke while performing the first actuation.

[0055] While the sleeve 160 performs the first operation and moves only by the first stroke, the first clutch ring 130 connected to the second clutch ring 140 can be moved by the sleeve 160 in the direction of the third clutch portion 113 of the case 110.

[0056] While the first clutch ring 130 moves in the direction of the third clutch portion 113 of the case 110, the first clutch portion 131 of the first clutch ring 130 can be engaged with the third clutch portion 113 of the case 110. Thereby, four-wheel drive (4WD, Four Wheel Drive) can be performed.

[0057] For example, a spline can be formed on the inner diameter portion of one end of the spacer 170 facing the one-side side gear 151, and the outer diameter portion of the one-side side gear 151 can be formed with a spline so that the inner diameter portion of the spacer 170 and the outer diameter portion of the one-side side gear 151 are engaged with the spline SP.

[0058] During four-wheel drive (4WD, Four Wheel Drive), the power of a power generation device (not shown) such as an engine or a drive motor can be transmitted to the power transmission member 180.

[0059] The power of the power generation device (not shown) can be transmitted to the case 110 via the power transmission member 180. Due to the rotation of the case 110, the support ring 120 can rotate.

[0060] The support ring 120 can rotate together with the case 110 in a state where the second gear portion 121 provided on the outer diameter portion on one side facing the first clutch ring 130 is engaged with the first gear portion 132 provided on the inner diameter portion of the first clutch ring 130.

[0061] When the support ring 120 rotates together with the case 110, the power is transmitted to the one-side side gear 151 and the other-side side gear 152 engaged with the pinion gear 153, and the one-side side gear 151 and the other-side side gear 152 can rotate.

[0062] 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 (not shown) on both sides can rotate. As a result, four-wheel drive can be achieved in which power from a power transmission device (not shown) is transmitted to the auxiliary driving wheels (not shown) as well as the main driving wheels (not shown).

[0063] Next, the operation of the present invention during differential limiting will be described.

[0064] FIG. 4 is a side view showing a differential limited state according to a preferred embodiment of the present invention.

[0065] As shown in Figures 1, 4, and 5, with the first clutch portion 131 engaged with the third clutch portion 113, the second operation of the actuator device 200 causes the sleeve 160 to move a predetermined second stroke while performing the second operation.

[0066] As the sleeve 160 moves by the second stroke while performing the second actuation, the second clutch ring 140 connected to the sleeve 160 can move toward the fourth clutch portion 151 a of the one side gear 151 .

[0067] As the second clutch ring 140 moves toward the fourth clutch portion 151a of the side gear 151, the second clutch portion 142 of the second clutch ring 140 may be meshed with the fourth clutch portion 151a of the one side gear 151. Thus, a differential limit may be achieved.

[0068] For example, in the differential 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, causing the drive wheel stuck in the rough road to spin freely, making it impossible to escape from the rough road.

[0069] However, in the present invention, in a differential limited state in which the first clutch portion 131 is engaged with the third clutch portion 113 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 easily escape from the rough road.

[0070] Next, the operation of the present invention in two-wheel drive will be described.

[0071] As shown in Figures 1 and 2, when the first clutch portion 131 and the third clutch portion 113 are engaged and the second clutch portion 142 and the fourth clutch portion 151a are engaged, the sleeve 160 can be moved in the disengagement direction by operation of the actuator device 200.

[0072] As the sleeve 160 moves in the disengagement direction, the second clutch ring 140 connected to the sleeve 160 moves in the disengagement direction, and the first clutch ring 130 connected to the second clutch ring 140 can also move in the disengagement direction.

[0073] As the first clutch ring 130 and the second clutch ring 140 move in the disengagement direction, the engagement between the first clutch portion 131 and the third clutch portion 113 can be released, and the engagement between the second clutch portion 142 and the fourth clutch portion 151a can be released. This allows two-wheel drive (2WD) to be performed.

[0074] In two-wheel drive, 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, allowing the one side side gear 151 and the other side side gear 152 to rotate.

[0075] As the one side gear 151 and the other side gear 152 rotate in mesh with the pinion gear 153 , the support ring 120 can also rotate together with the one side gear 151 and the other side gear 152 .

[0076] As the support ring 120 rotates freely inside the case 110, the auxiliary driving wheels (not shown) coast and the main driving wheels (not shown) alone can be used for two-wheel drive (2WD) driving.

[0077] For example, electric vehicles inevitably generate high differential noise because they operate at high revolution speeds. However, the present invention can solve the conventional problem of high differential noise generation by rotating the support ring 120 inside the case 110.

[0078] 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]

[0079] 110 ···Case 113 Third clutch section 114 ...Through hole 120 ···Support ring 121 Second gear section 130 ···First clutch ring 131 First clutch section 132 First gear section 140 ···Second clutch ring 142 Second clutch section 151 One side gear 151a Fourth clutch part 152 Other side gear 153 Pinion gear 160 Sleeve 170 ···Spacer 180 Power transmission member 200 Actuator device 210 ···Housing 211...open area 212...Groove 220 ···Motor 230 ···Ball screw shaft 250 ···Transport nut 260 ···Guide rail 261 ...locking protrusion 270 ···Fork S Elastic material

Claims

1. case; a first clutch ring having a first clutch portion on an outer diameter portion thereof; and a second clutch ring having one side end connected to the first clutch ring, a second clutch portion provided on one side facing the one side gear installed inside the case, and a sleeve coupled to an outer diameter portion on the other side; Including, a first operation of the sleeve caused by a first operation of an actuator device connected to the sleeve, the first clutch ring connected to the second clutch ring is inserted into the case, and the first clutch portion is engaged with a third clutch portion provided on an inner diameter portion of one side of the case, thereby performing 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 moves toward the one side gear by a second operation of the sleeve caused by a second operation of the actuator device, and the second clutch portion is engaged with a fourth clutch portion provided on one side of the one side gear, thereby limiting the differential.

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

3. The first clutch ring is connected to the sleeve by a spacer extending toward the sleeve on one side; 2. A disconnector device according to claim 1 , characterized in that it comprises:

4. The first clutch portion and the third clutch portion are constituted by spline clutches, and the second clutch portion and the fourth clutch portion are constituted by dog ​​clutches.

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

5. a support ring is provided inside the case, and a pinion gear is provided inside the support ring, and the pinion gear is meshed with the one-side side gear and the other-side side gear provided on both sides of the support ring; 2. A disconnector device according to claim 1 , characterized in that it comprises:

6. a first gear portion is formed on an inner diameter portion of the first clutch ring, and the first gear portion is engaged with a second gear portion provided on an outer diameter portion of one side of the support ring; 6. A disconnector device according to claim 5, characterized in that

7. the sleeve is coupled 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:

8. The actuator device comprises: housing; a motor coupled to the housing; and a ball screw shaft coupled to the motor; Including, the transfer 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 extends from the transfer nut toward the sleeve through an opening of the housing and is connected to the sleeve inside the case through a through hole of the case.

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

9. the guide rail is elastically supported by an elastic member coupled to one end thereof, and the elastic member is assembled such that one end thereof is inserted into a groove of the housing and the other end thereof is engaged with an engaging protrusion provided on the guide rail.

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

10. A power transmission member is provided on the outside of the case.

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

11. The power transmission member is A ring gear transmits power transmitted from a power generating device to the case.

11. A disconnector device according to claim 10, characterized in that

12. The power generating device is an engine or a drive motor; 12. A disconnector device according to claim 11 , characterized in that

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