Variable valve timing phaser
By integrating the inner cover plate, sprocket and stator ring, an integrated stator part is formed, which solves the problem of high production costs caused by the large number of existing phaser parts, and achieves the effect of reducing production costs and improving structural strength.
Patent Information
- Application Number
- CN202422398747.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The large number of existing phaser parts leads to the need for independent molding, shaping, cleaning, packaging and transportation of each part, with high cumulative costs.
A variable valve timing phaser is designed to connect the inner cover plate, sprocket and stator ring in one piece to form an integrated stator piece, which can be processed with only a single mold, and subsequent shaping, cleaning, packaging and transportation can also be carried out together.
It greatly reduces production costs, increases the strength of the overall structure, simplifies assembly steps, and is simple and convenient to operate.
Smart Images
Figure CN222976894U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of phasers, and particularly relates to a variable valve timing phaser. Background Art
[0002] The engine variable valve timing system, also known as the VVT system, is widely used in automotive internal combustion engines. The core components of the VVT system include a phaser, a central control valve, and an electromagnet. Among them, the cost of the phaser accounts for about half of the total cost of the VVT system assembly. The cost of this part has a great impact on the total cost of the VVT system. By reducing the cost of the phaser, the total cost of the VVT system can be effectively reduced, which is very useful for obtaining new projects and increasing market competitiveness.
[0003] The main components of the phaser include: an inner cover plate, an outer cover plate, a stator, a rotor, and other auxiliary parts; among them, the inner cover plate, the outer cover plate, the stator, and the rotor account for about 90% of the cost of the phaser. Therefore, if the production costs of the above four parts can be significantly reduced, the reduction effect on the total cost of the VVT system will be very obvious.
[0004] At present, the outer cover plate, inner cover plate, stator, and rotor of the phaser are mostly produced and processed using independent molds. In addition, in order to adapt to the target interface of the customer, a sprocket needs to be assembled on the phaser. Since each part requires a corresponding mold, and each part also needs to be shaped, cleaned, packaged, and transported separately, the more parts there are, the higher the cumulative cost of the production process. Summary of the Utility Model
[0005] The purpose of the utility model is to solve the problem in the prior art that the number of parts of the phaser is relatively large, each part requires a corresponding mold, and each part also needs to be shaped, cleaned, packaged, and transported separately, resulting in a relatively high cumulative cost in the production process.
[0006] To solve the above problems, the utility model provides a variable valve timing phaser, which includes a stator part, a rotor, and an outer cover plate. The stator part includes a stator ring, an inner cover plate, and a sprocket. The inner cover plate is integrally connected to the back side of the stator ring and extends to the inside of the stator ring. The sprocket is integrally connected to the back side of the stator ring and extends to the outside of the stator ring. The outer cover plate is detachably connected to the front side of the stator ring. The rotor is rotatably installed inside the stator ring and is restricted between the inner cover plate and the outer cover plate.
[0007] Compared with the prior art, in the above solution, by designing the inner cover plate, sprocket and stator ring as an integral connection, multiple originally independently produced parts are combined together, so that a stator part integrated with the inner cover plate, sprocket and stator ring can be processed with only a single mold, and subsequent shaping, cleaning, packaging and transportation can all be carried out together, greatly reducing the production cost; at the same time, both the inner cover plate and the sprocket are integrally connected to the back side of the stator ring, and the inner cover plate can play a certain role in supporting and strengthening the sprocket that mainly bears the load, and the overall structural strength is better; in addition, since the outer cover plate is detachably connected to the front side of the stator ring, the assembly of the rotor relative to the stator ring can be realized by disassembling and assembling the outer cover plate, simplifying the assembly steps and making the operation simple and convenient.
[0008] In an improved solution, the inner cover plate and the sprocket are in the same plane, so as to further enhance the supporting and strengthening effect of the inner cover plate on the sprocket.
[0009] In an improved solution, the stator ring, inner cover plate and sprocket of the stator part are integrally formed by powder metallurgy process, with simple processing and good forming quality.
[0010] In an improved solution, a plurality of partition seats are arranged along the circumferential direction on the inner peripheral wall of the stator ring, and an oil cavity is formed between the plurality of partition seats.
[0011] In an improved solution, screw holes parallel to the axial direction of the stator ring are formed on one side of the partition seat facing the outer cover plate, the outer cover plate is provided with mounting through holes corresponding to the screw holes one by one, and bolts screwed into the screw holes are arranged in the mounting through holes. The arrangement of the screw holes in the partition seats is more reasonable, ensuring that after the bolts are screwed into the screw holes, the outer cover plate has better connection strength relative to the stator ring.
[0012] In an improved solution, mounting through holes parallel to the axial direction of the stator ring are formed in the partition seat, the mounting through holes penetrate through the inner cover plate, the outer cover plate is provided with screw holes corresponding to the mounting through holes one by one, and bolts screwed into the screw holes are arranged in the mounting through holes. The arrangement of the mounting through holes in the partition seats is more reasonable, ensuring that after the bolts are screwed into the screw holes, the outer cover plate has better connection strength relative to the stator ring. Description of the Drawings
[0013] Figure 1 It is an overall schematic diagram of a variable valve timing phaser;
[0014] Figure 2 It is an exploded schematic diagram of a variable valve timing phaser;
[0015] Figure 3 It is a front view of Embodiment a of a variable valve timing phaser;
[0016] Figure 4is a schematic cross-sectional view along the Figure 3 A-A section line in
[0017] Figure 5 is the front view of Embodiment b of a variable valve timing phaser;
[0018] Figure 6 is a schematic cross-sectional view along the Figure 5 B-B section line in
[0019] Description of the reference numerals in the drawings,
[0020] 1. Stator part; 11. Stator ring; 111. Partition seat; 112. Oil chamber; 12. Inner cover plate; 13. Sprocket; 2. Rotor; 3. Outer cover plate; 41. Screw hole; 42. Mounting through hole; 43. Bolt. Detailed implementation manners
[0021] Those skilled in the art should understand that the following implementation manners are only used to explain the technical principle of the embodiments of the present application and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.
[0022] In the description of the following embodiments, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.
[0023] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0024] The present application will be further described in detail below with reference to the drawings and specific embodiments.
[0025] Please refer to Figures 1-4, A variable valve timing phaser provided by an embodiment of the present utility model includes a stator member 1, a rotor 2, and an outer cover plate 3. The stator member 1 includes a stator ring 11, an inner cover plate 12, and a sprocket 13. The inner cover plate 12 is integrally connected to the back side of the stator ring 11 and extends to the inside of the stator ring 11. The sprocket 13 is integrally connected to the back side of the stator ring 11 and extends to the outside of the stator ring 11. The outer cover plate 3 is detachably connected to the front side of the stator ring 11. The rotor 2 is rotatably installed inside the stator ring 11 and is restricted between the inner cover plate 12 and the outer cover plate 3.
[0026] In the above solution, by designing the inner cover plate 12, the sprocket 13, and the stator ring 11 to be integrally connected, multiple originally independently produced parts are combined together, so that the stator member 1 integrating the inner cover plate 12, the sprocket 13, and the stator ring 11 can be processed with only a single mold, and subsequent shaping, cleaning, packaging, and transportation can all be carried out together, greatly reducing the production cost. At the same time, both the inner cover plate 12 and the sprocket 13 are integrally connected to the back side of the stator ring 11. The inner cover plate 12 can play a certain role in supporting and strengthening the sprocket 13 that mainly bears the load, and the overall structural strength is better. In addition, after optimization, the entire phaser is composed of three parts: the stator member 1, the rotor 2, and the outer cover plate 3. Since the outer cover plate 3 is detachably connected to the front side of the stator ring 11, the assembly of the rotor 2 relative to the stator ring 11 can be realized by disassembling and assembling the outer cover plate 3, simplifying the assembly steps and making the operation simple and convenient.
[0027] As an optimization of this embodiment, the inner cover plate 12 and the sprocket 13 are in the same plane, thereby further enhancing the supporting and strengthening effect of the inner cover plate 12 on the sprocket 13.
[0028] In this embodiment, the stator ring 11, the inner cover plate 12, and the sprocket 13 of the stator member 1 are integrally formed by powder metallurgy process, with simple processing and good forming quality.
[0029] A plurality of partition seats 111 are arranged along the circumferential direction on the inner peripheral wall of the stator ring 11, and an oil cavity 112 is formed between the plurality of partition seats 111;
[0030] As Figure 3 and Figure 4 shown, in Embodiment a, a screw hole 41 parallel to the axial direction of the stator ring 11 is formed on the side of the partition seat 111 facing the outer cover plate 3. The outer cover plate 3 is provided with mounting through holes 42 corresponding to the screw holes 41 one by one. A bolt 43 screwed into the screw hole 41 is provided in the mounting through hole 42. The screw hole 41 is arranged on the partition seat 111, making the layout more reasonable, ensuring that after the bolt 43 is screwed into the screw hole 41, the outer cover plate 3 has better connection strength relative to the stator ring 11;
[0031] As Figure 5 and Figure 6As shown, in Embodiment b, the partition seat 111 is provided with an installation through hole 42 parallel to the axis of the stator ring 11. The installation through hole 42 penetrates the inner cover plate 12. The outer cover plate 3 is provided with screw holes 41 corresponding to the installation through holes 42 one by one. A bolt 43 screwed into the screw hole 41 is arranged in the installation through hole 42. The installation through hole 42 is arranged in the partition seat 111, making the layout more reasonable. After the bolt 43 is screwed into the screw hole 41, the outer cover plate 3 has better connection strength relative to the stator ring 11.
[0032] It should be noted that in the description of the present application, the terms "inner", "outer" and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application; all directional indications (such as up, down, left, right, front, back, inner, outer) are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indication also changes accordingly.
[0033] In the description of the present application, the description with reference to terms such as "one embodiment", "some embodiments", "in this embodiment", "specific examples", or "some examples" means that the specific features, mechanisms, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0034] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A variable valve timing phaser, comprising a stator component (1), a rotor (2) and an outer cover plate (3), wherein the stator component (1) comprises a stator ring (11), an inner cover plate (12) and a sprocket (13), characterized in that: The inner cover plate (12) is integrally connected to the back side of the stator ring (11) and extends to the inner side of the stator ring (11); the sprocket (13) is integrally connected to the back side of the stator ring (11) and extends to the outer side of the stator ring (11); the outer cover plate (3) is detachably connected to the front side of the stator ring (11); and the rotor (2) is rotatably mounted inside the stator ring (11) and is confined between the inner cover plate (12) and the outer cover plate (3).
2. The variable valve timing phaser according to claim 1, characterized in that: The inner cover plate (12) and the sprocket (13) are located in the same plane.
3. The variable valve timing phaser according to claim 2, characterized in that: The stator ring (11), the inner cover plate (12) and the sprocket (13) of the stator component (1) are integrally formed by a powder metallurgy process.
4. The variable valve timing phaser according to any one of claims 1 to 3, characterized in that: The inner peripheral wall of the stator ring (11) is provided with a plurality of spacers (111) arranged along the circumferential direction, and an oil chamber (112) is formed between the plurality of spacers (111).
5. The variable valve timing phaser according to claim 4, characterized in that: The spacer (111) is provided with a screw hole (41) parallel to the axial direction of the stator ring (11) on one side facing the outer cover plate (3); the outer cover plate (3) is provided with mounting through holes (42) corresponding to the screw holes (41) one by one; and bolts (43) are provided in the mounting through holes (42) and are screwed to the screw holes (41).
6. The variable valve timing phaser according to claim 4, characterized in that: The spacer (111) is provided with a mounting through hole (42) parallel to the axial direction of the stator ring (11), and the mounting through hole (42) passes through the inner cover plate (12). The outer cover plate (3) is provided with screw holes (41) corresponding to the mounting through holes (42) one by one, and bolts (43) screwed to the screw holes (41) are provided in the mounting through holes (42).