Assembly structure of a hybrid transmission

Abstract

Provided is an assembled structure of a hybrid transmission, including: an engine clutch retainer provided with an assembled hole; a coupling member assembled through the assembled hole; and a sealing cover for sealing the assembled hole.

Description

TECHNICAL FIELD

[0001] The present application relates to an assembly structure of a hybrid transmission. BACKGROUND

[0002] Generally, a hybrid vehicle means a vehicle driven by effectively combining two or more different types of power sources. The hybrid vehicle refers to a vehicle driven by an engine and a motor, in which the engine obtains a rotational force by burning a fuel (a fossil fuel such as gasoline), and the motor obtains a rotational force by a battery power.

[0003] These hybrid vehicles are actively developing future vehicles which adopt a motor as an auxiliary power source in addition to an engine, and thus, can seek to reduce exhaust gas and improve fuel efficiency.

[0004] The hybrid vehicle generally uses an engine and a motor, uses the motor having a relatively better low-speed torque characteristic as a main power source at a low speed, and uses the engine having a relatively better high-speed torque characteristic as a main power source at a high speed. Since the hybrid vehicle stops using the engine using a fossil fuel at a low speed region and uses the motor, it has an effect of improving fuel consumption and reducing exhaust gas.

[0005] The driving device of the hybrid vehicle operates in an operation mode such as an EV (Electric Vehicle) mode and an HEV (Hybrid Electric Vehicle) mode, in which the EV mode is a pure electric vehicle mode using only a rotational force of the motor, and the HEV mode is a mode using a rotational force of the engine as a main power while using a rotational force of the motor as an auxiliary power, and mode conversion from the EV mode to the HEV mode is performed by starting the engine.

[0006] In addition, in order to assemble a bearing for rotatably supporting an engine clutch retainer in the existing hybrid transmission, it is inevitable to use a coupling member such as a bolt to fix the bearing to a support. At this time, since the engine clutch retainer is located between the bearing and an engine clutch piston, an assembly hole passing from the engine clutch piston side to the bearing direction needs to be formed in order to facilitate the assembly work of the bolt. When the assembly hole is formed in the engine clutch retainer, it is easy to perform the work of inserting the bolt from the engine clutch piston side through the assembly hole to the bearing side and fixing the bearing to the support with the bolt.

[0007] However, when an assembly hole is formed on the existing engine clutch retainer, hydraulic oil supplied between the engine clutch retainer and the engine clutch piston flows to the bearing side through the assembly hole, and thus, working hydraulic pressure required for operation of the engine clutch cannot be formed, causing a problem in that the engine clutch cannot be operated.

[0008] In order to solve the above problems, the present application provides an assembly structure of a hybrid transmission, in which an assembly hole is formed on an engine clutch retainer, a coupling member is coupled to the assembly hole, and a sealing cap is coupled to the assembly hole to seal the assembly hole.

[0009] [Related Art Document]

[0010] [Patent Document]

[0011] [Patent Document 1] Korean Patent Laid-Open Publication No. 10-2010-0015063 (published on February 12, 2010) SUMMARY

[0012] Technical Challenge

[0013] In order to solve the above problems, the present application provides an assembly structure of a hybrid transmission, in which an assembly hole is formed on an engine clutch retainer, a coupling member is coupled to the assembly hole, and a sealing cap is coupled to the assembly hole to seal the assembly hole.

[0014] Means for Solving the Problem

[0015] In order to achieve the above object, the present application provides an assembly structure of a hybrid transmission, in which an engine clutch retainer having an assembly hole, a coupling member coupled to the assembly hole, and a sealing cap for sealing the assembly hole are included.

[0016] Further, the engine clutch retainer is positioned between the coupling object and the engine clutch piston.

[0017] Further, the coupling member is used to couple and fix the coupling object through the assembly hole.

[0018] Further, the engine clutch retainer has a receiving portion corresponding to the sealing cap, which is provided on the engine clutch piston side in communication with the assembly hole formed on the coupling object side, and the receiving portion is formed by a larger hole than the assembly hole.

[0019] Further, a water-tight member is provided on the outer periphery of the sealing cap, which seals a contact portion with the receiving portion.

[0020] Also, the sealing cover includes a through-hole formed in the center of the sealing cover, and a recessed portion formed in a surface opposite to the engine clutch piston and recessed along the circumference of the through-hole.

[0021] Also, the recessed portion includes a recessed surface having a tool engagement portion, an inner ring portion formed on the inner side of the recessed surface and composed of an inclined surface, and an outer ring portion formed on the outer side of the recessed surface and composed of an inclined surface, the outer ring portion being formed larger than the inner ring portion.

[0022] Also, the tool engagement portion is a rib.

[0023] Also, the assembly object has a rim portion provided on the outer circumference of the assembly object and having a coupling hole coupled to the coupling member.

[0024] Also, the engine clutch retainer is integrated with a motor rotor.

[0025] Also, the assembly object rotatably supports the engine clutch retainer in a state where the assembly object is fixed to a support member by the coupling member.

[0026] Also, the assembly object is a bearing.

[0027] Also, the coupling member is a bolt.

[0028] Also, the engine clutch retainer is integrated with a magnet.

[0029] Inventive Effects

[0030] The present application strengthens the support of the engine clutch retainer by an assembly such as a double ball bearing, thereby reducing the noise and vibration of a hybrid vehicle and improving performance.

[0031] Further, the present application plugs an assembly hole formed on the engine clutch retainer with a sealing cover to form working hydraulic pressure between the engine clutch retainer and the engine clutch piston, thereby smoothly performing the operation of the engine clutch. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 FIG. 1 is a diagram showing the overall structure according to a preferred embodiment of the present application.

[0033] Figure 2 is Figure 1 is an enlarged view of A portion of FIG. 1.

[0034] Figure 3 is an enlarged view of the sealing cover according to the preferred embodiment of the present application.

[0035] Figure 4 This is a diagram illustrating the assembly process according to a preferred embodiment of the present invention.

[0036] *Symbol Explanation*:

[0037] 101: Motor stator; 102: Magnet

[0038] 110: Engine clutch retainer; 111: Assembly hole

[0039] 112: Receiving part; 120: Assembly object

[0040] 121: Edge portion; 121a: Connecting hole

[0041] 130: Engine clutch piston; 140: Engagement component

[0042] 150: Sealing cap; 151: Through hole

[0043] 152: Recessed portion; 152a: Recessed surface

[0044] 152b: Tool engagement portion; 152c: Inner ring portion

[0045] 152d: Outer ring; 160: Watertight component

[0046] 170: Support component; 180: Clutch disc

[0047] P: Working hydraulic pressure Detailed Implementation

[0048] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. First, it should be noted that when labeling the constituent elements of the drawings, the same reference numerals should be used as much as possible for the same constituent elements, even in different drawings. Furthermore, when describing the present invention, detailed descriptions of related well-known structures or functions will be omitted if it is determined that such detailed descriptions would obscure the essence of the invention. Moreover, although preferred embodiments of the present invention will be described below, the technical concept of the present invention is not limited to or restricted thereto, and can be implemented in various ways by those skilled in the art.

[0049] When an assembly hole is formed in an existing engine clutch retainer, the working oil supplied between the engine clutch retainer and the engine clutch piston flows to the bearing side through the assembly hole. Therefore, the working hydraulic pressure required for engine clutch operation cannot be generated, leading to a problem where the engine clutch cannot operate. In contrast, this invention provides a mechanism that generates working hydraulic pressure between the engine clutch retainer and the engine clutch piston by sealing the assembly hole formed in the engine clutch retainer with a sealing cap, thereby enabling smooth operation of the engine clutch.

[0050] Figure 1 is a diagram showing the overall structure according to a preferred embodiment of the present application, Figure 2 is Figure 1 is an enlarged view of the A portion of Figure 3 is an enlarged view of the sealing cover according to a preferred embodiment of the present application.

[0051] As Figures 1 to 3 shown, the present application provides an assembly hole (111) in an engine clutch retainer (110) through which a coupling member (140) such as a bolt can pass, and after the coupling member (140) is assembled through the assembly hole (111), the assembly hole (111) is plugged with a sealing cover (150) to prevent oil from leaking through the assembly hole (111), thereby preventing the working hydraulic pressure (P) of the engine clutch from leaking.

[0052] Specifically, the present application includes an engine clutch retainer (110) having an assembly hole (111), and a coupling member (140) that fixes an assembly object (120) through the assembly hole (111).

[0053] The engine clutch retainer (110) is located between the assembly object (120) and the engine clutch piston (130) inside the hybrid transmission. As an example, the engine clutch retainer (110) can be integrated with the motor rotor. The assembly hole (111) of the engine clutch retainer (110) is formed through to the assembly object (120) such as a bearing. As an example, the assembly object (120) can be a double ball bearing.

[0054] The motor applied to the hybrid vehicle includes a motor stator (101), a magnet (102), and a motor rotor integrated with the engine clutch retainer (110).

[0055] The assembly hole (111) should be formed as a hole large enough to allow the coupling member (140) to pass freely when the coupling member (140) is assembled, so that the assembly work can be performed smoothly.

[0056] The coupling member (140) is inserted into the assembly object (120) side through the assembly hole (111) to assemble the assembly object (120) in a manner that fixes the assembly object (120) to a fixed object such as a support (170). As an example, the coupling member (140) can be a bolt.

[0057] After the assembly of the coupling member (140) is performed, the assembly hole (111) is sealed by the sealing cover (150). Since the assembly hole (111) is sealed by the sealing cover (150) to prevent oil from leaking through the assembly hole (111), it is possible to prevent the working hydraulic pressure (P) of the engine clutch from leaking. Thus, the working hydraulic pressure (P) is formed between the engine clutch retainer (110) and the engine clutch piston (130), and it is possible to smoothly perform the operation of the engine clutch.

[0058] The engine clutch retainer (110) is provided with a housing portion (112). The housing portion (112) corresponds to the coupling sealing cover (150). The housing portion (112) is provided on the engine clutch piston (130) side, and the assembly hole (111) is provided on the assembly object (120) side. The housing portion (112) is concentrically communicated with the assembly hole (111). The housing portion (112) is constituted by a larger hole than the assembly hole (111).

[0059] As an example, the sealing cover (150) can be provided with a water-tight member (160) on the outer periphery thereof. The water-tight member (160) can be a rubber ring. The water-tight member (160) can prevent oil leakage by sealing the portion in contact with the housing portion (112).

[0060] The sealing cover (150) includes a through hole (151) provided at the center and a recessed portion (152) provided around the through hole (151). The recessed portion (152) is provided on the surface opposite to the engine clutch piston (130). The recessed portion (152) is recessed along the periphery of the through hole (151). The recessed portion (152) is formed in a circular shape.

[0061] Specifically, the recessed portion (152) is provided with a recessed surface (152a), an inner ring portion (152c), and an outer ring portion (152d).

[0062] A tool coupling portion (152b) is provided on the recessed surface (152a). As an example, the tool coupling portion (152b) can be a rib. By pulling the tool coupling portion (152b) using a tool such as a pliers, the sealing cover (150) in the assembled state can be easily disassembled.

[0063] As an example, it is preferable that two opposing tool coupling portions (152b) be provided on the recessed surface (152a). When the two tool coupling portions (152b) are coupled to two tools and the sealing cover (150) is pulled, the force to pull the sealing cover (150) is uniformly applied to both sides, and thus the sealing cover (150) in the assembled state can be easily disassembled.

[0064] The inner ring portion 152c is connected to the recessed surface 152a to form an inner ring. The inner ring portion 152c is formed on the inner side of the recessed surface 152a. The inner ring portion 152c is formed by a sloped surface whose width increases from the inside to the outside.

[0065] The outer ring portion 152d is connected to the recessed surface 152a to form an outer ring. The outer ring portion 152d is formed on the outer side of the recessed surface 152a. The outer ring portion 152d is formed by a sloped surface whose width increases from the inside to the outside. The outer ring portion 152d is formed by an outer ring having a larger diameter than the inner ring portion 152c.

[0066] The assembly object 120 has the edge portion 121. The edge portion 121 is formed so as to extend in the outward direction of the outer periphery of the assembly object 120. The edge portion 121 has the coupling hole 121a. As an example, it is preferable that the coupling hole 121a has a shape corresponding to the head of a bolt so that the head of the bolt can be accommodated.

[0067] The coupling member 140 is inserted into the coupling hole 121a through the assembly hole 111, and is screwed to the support 170.

[0068] The coupling member 140 is assembled in a state in which the assembly hole 111, the coupling hole 121a, and the screwing portion of the support 170 are aligned in a straight line.

[0069] The assembly object 120 rotatably supports the engine clutch retainer 110 in a state in which the assembly object 120 is fixed to the support 170 by the coupling member 140.

[0070] Next, the assembly process according to the present application will be described.

[0071] Figure 4 is a view showing the assembly process according to a preferred embodiment of the present application.

[0072] As shown in Figure 4 , the assembly object 120 is press-fitted into the engine clutch retainer 110. In this way, when the assembly object 120 is press-fitted into the assembly portion of the engine clutch retainer 110, the coupling hole 121a provided in the edge portion 121 of the assembly object 120 naturally coincides with the assembly hole 111.

[0073] The coupling member 140 is inserted into the assembly hole 111 from the engine clutch piston 130 side. The coupling member 140 inserted into the assembly hole 111 is screwed to the assembly portion of the support 170 through the coupling hole 121a.

[0074] In this way, after assembling the assembly object (120) with the coupling member (140) to be fixed to the support (170), the assembly hole (111) is sealed with the sealing cover (150).

[0075] Specifically, when the sealing cover (150) is coupled to the housing portion (112) of the engine clutch retainer (110), the assembly hole (111) communicating with the housing portion (112) is sealed with the sealing cover (150). Thus, it is possible to prevent the working hydraulic pressure from leaking to the assembly object (120) side through the assembly hole (111) between the engine clutch retainer (110) and the engine clutch piston (130).

[0076] After the sealing cover (150) is assembled, the engine clutch piston (130) and the clutch disc (180) and the like are sequentially assembled.

[0077] When the sealing cover (150) is coupled to the housing portion (112), the watertight member (160) of the outer periphery of the sealing cover (150) is in close contact with the inner peripheral surface of the housing portion (112), thereby achieving a firm watertight state.

[0078] As described above, the present application can enhance the support of the engine clutch retainer by the assembly object such as a double ball bearing, thereby reducing the noise and vibration of the hybrid vehicle and improving the performance. In addition, according to the present application, by plugging the assembly hole provided in the engine clutch retainer with the sealing cover, the working hydraulic pressure is formed between the engine clutch retainer and the engine clutch piston, thereby making it possible to smoothly perform the operation of the engine clutch retainer.

[0079] The above is merely used to exemplarily explain the technical spirit of the present application, and a person having ordinary skill in the art to which the present application pertains can make various modifications, changes and substitutions thereto without departing from the essential characteristics of the present application. Therefore, the embodiments disclosed in the present application and the drawings are not intended to limit but to explain the technical spirit of the present application, and the scope of the technical spirit of the present application should not be limited by the above-described embodiments and drawings. The scope of protection of the present application should be interpreted by the appended claims, and all technical spirits within the equivalent scope thereof should be included in the scope of the present application.

Claims

1. An assembled structure of a hybrid transmission, characterized by comprising: Comprising: An engine clutch retainer located between an assembly object and an engine clutch piston and provided with an assembly hole; A coupling member assembled through the assembly hole; And A sealing cover for sealing the assembly hole, Characterized in that The sealing cover comprises: A through hole formed in the center of the sealing cover; and A recessed portion formed on the surface opposite to the engine clutch piston and recessed along the circumference of the through hole, the recessed portion comprising: A recessed surface provided with a tool engaging portion; An inner ring portion formed on the inner side of the recessed surface and composed of an inclined surface; and An outer ring portion formed on the outer side of the recessed surface and composed of an inclined surface, forming a larger outer ring than the inner ring portion.

2. The assembled structure of the hybrid transmission according to claim 1, characterized by, The coupling member is used to assemble and fix the assembly object through the assembly hole.

3. The assembled structure of the hybrid transmission according to claim 1, characterized by The engine clutch retainer is provided with a receiving portion corresponding to the sealing cover, which is arranged on the engine clutch piston side in communication with the assembly hole formed on the assembly object side, and the receiving portion is formed by a larger hole than the assembly hole.

4. The assembled structure of the hybrid transmission according to claim 3, characterized by A watertight member is provided on the outer circumference of the sealing cover, which seals the contact part of the receiving portion.

5. The assembled structure of the hybrid transmission according to claim 1, characterized by The tool engaging portion is a rib.

6. The assembled structure of the hybrid transmission according to claim 1, characterized by The assembly object is provided with an edge portion, which is arranged on the outer circumference of the assembly object and provided with a coupling hole corresponding to the coupling member.

7. The assembled structure of the hybrid transmission according to claim 1, characterized by The engine clutch retainer is integrated with the motor rotor.

8. The assembled structure of the hybrid transmission according to claim 1, characterized by, The assembly object rotatably supports the engine clutch retainer in the state of being fixed to the support member by the coupling member.

9. The assembled structure of the hybrid transmission according to claim 1, characterized by, The assembly object is a bearing.

10. The assembled structure of the hybrid transmission according to claim 1, characterized by, The coupling member is a bolt.

11. The assembled structure of the hybrid transmission according to claim 1, characterized by, The engine clutch retainer is integrated with the magnet.

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