Variable valve timing phaser
By designing the inner cover plate, sprocket and stator ring as an integrated connection, the high production cost problem caused by the large number of phaser parts is solved, cost reduction and structural strength improvement are achieved, and the assembly process is simplified.
Patent Information
- Application Number
- CN202411381802.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2024-12-24
AI Technical Summary
The large number of phaser parts leads to the need for independent molding, shaping, cleaning, packaging and transportation of each part, which increases production costs.
The stator parts are designed to be integrated with the inner cover plate, sprocket and stator ring. The outer cover plate is removable and the rotor is rotatably installed between the inner cover plate and the outer cover plate, reducing the number of molds and simplifying the assembly process.
It reduces production costs, improves overall structural strength, and simplifies assembly steps, making operation more convenient.
Smart Images
Figure CN119177888A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of phasers, and in particular to a variable valve timing phaser. Background Art
[0002] The variable valve timing system of the engine, also known as the VVT system, is widely used in automobile internal combustion engines. The core components of the VVT system include phasers, central control valves and electromagnets. The cost of the phaser accounts for about half 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 helpful in obtaining new projects and increasing market competitiveness.
[0003] The main components of the phaser include: inner cover, outer cover, stator, rotor, and other accessories; among them, the inner cover, outer cover, stator, and rotor account for about 90% of the phaser cost. Therefore, if the production cost of the above four parts can be greatly reduced, the total cost reduction effect on the VVT system will be very obvious.
[0004] At present, the outer cover, inner cover, stator and rotor of the phaser are mostly produced and processed separately using independent molds. In addition, in order to adapt to the customer's target interface, a sprocket needs to be assembled on the phaser. Since each part needs to be equipped with a corresponding mold, and each part 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 invention
[0005] The purpose of the present invention is to solve the problem that the phaser in the prior art has a large number of parts, each part needs to be configured with a corresponding mold, and each part needs to be shaped, cleaned, packaged and transported separately, resulting in a high cumulative cost of the production process.
[0006] In order to solve the above problems, the present invention provides a variable valve timing phaser, including a stator component, a rotor and an outer cover plate, the stator component 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 inner side of the stator ring, the sprocket is integrally connected to the back side of the stator ring and extends to the outer side of the stator ring, the outer cover plate is detachably connected to the front side of the stator ring, and the rotor is rotatably installed inside the stator ring and is confined between the inner cover plate and the outer cover plate.
[0007] Compared with the prior art, the above scheme combines multiple parts that were originally produced independently together by designing the inner cover plate, sprocket and stator ring to be connected as an integral whole, so that only a single mold is needed to process the stator component integrating the inner cover plate, sprocket and stator ring, and the subsequent shaping, cleaning, packaging and transportation can be carried out together, which greatly reduces the production cost; at the same time, the inner cover plate and the sprocket are both integrally connected to the back side of the stator ring, and the inner cover plate can play a certain supporting and reinforcing role for 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 rotor can be assembled relative to the stator ring by disassembling and assembling the outer cover plate, which simplifies the assembly steps and is simple and convenient to operate.
[0008] In an improved solution, the inner cover plate and the sprocket are in the same plane, thereby further enhancing the supporting and reinforcing effect of the inner cover plate on the sprocket.
[0009] In an improved solution, the stator ring, the inner cover plate and the sprocket of the stator component are integrally formed by a powder metallurgy process, which is simple to process and has good molding quality.
[0010] In an improved solution, a plurality of spacers are arranged along the circumferential direction on the inner circumferential wall of the stator ring, and oil chambers are formed between the plurality of spacers.
[0011] In an improved solution, a screw hole parallel to the axial direction of the stator ring is opened on the side of the spacer facing the outer cover plate, and the outer cover plate is provided with mounting through holes corresponding to the screw holes one by one. Bolts screwed to the screw holes are provided in the mounting through holes. The screw holes are arranged in the spacer to make the layout more reasonable, ensuring that after the bolts are screwed to the screw holes, the outer cover plate has a better connection strength relative to the stator ring.
[0012] In an improved solution, the spacer is provided with a mounting through hole parallel to the axial direction of the stator ring, the mounting through hole passes through the inner cover plate, the outer cover plate is provided with screw holes corresponding to the mounting through holes one by one, the mounting through holes are provided with bolts screwed to the screw holes, and the mounting through holes are arranged in the spacer to make the layout more reasonable, ensuring that after the bolts are screwed to the screw holes, the outer cover plate has a better connection strength relative to the stator ring. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is an overall schematic diagram of a variable valve timing phaser;
[0014] Figure 2 An exploded schematic diagram of a variable valve timing phaser;
[0015] Figure 3 A front view of an embodiment a of a variable valve timing phaser;
[0016] Figure 4For along Figure 3 Schematic cross-sectional view of the AA section line;
[0017] Figure 5 It is a front view of an embodiment b of a variable valve timing phaser;
[0018] Figure 6 For along Figure 5 Schematic diagram of the cross-section along the BB section line.
[0019] Description of reference numerals:
[0020] 1. stator component; 11. stator ring; 111. spacer; 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 DESCRIPTION
[0021] It should be understood by those skilled in the art that the following embodiments are only used to explain the technical principles 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 may adjust them as needed 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 "connection" 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 a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.
[0023] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0024] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.
[0025] See also Figure 1-Figure 4A variable valve timing phaser provided by an embodiment of the present invention includes a stator component 1, a rotor 2 and an outer cover plate 3. The stator component 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 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. The rotor 2 is rotatably installed inside the stator ring 11 and is confined between the inner cover plate 12 and the outer cover plate 3.
[0026] The above scheme designs the inner cover plate 12, sprocket 13 and stator ring 11 to be connected as an integral whole, so that multiple parts that were originally produced independently are combined together, so that only a single mold is needed to process the stator component 1 integrated with the inner cover plate 12, sprocket 13 and stator ring 11, and the subsequent shaping, cleaning, packaging and transportation can be carried out together, which greatly reduces the production cost; at the same time, the inner cover plate 12 and the sprocket 13 are both integrally connected to the back side of the stator ring 11, and the inner cover plate 12 can play a certain supporting and reinforcing role for the sprocket 13 that mainly bears the load, and the overall structural strength is better; in addition, after optimization, the entire phaser consists of three parts: the stator component 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 rotor 2 can be assembled relative to the stator ring 11 by disassembling and assembling the outer cover plate 3, which simplifies the assembly steps and is simple and convenient to operate.
[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 reinforcing 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 component 1 are integrally formed by a powder metallurgy process, which has simple processing and good forming quality.
[0029] The inner peripheral wall of the stator ring 11 is provided with a plurality of spacers 111 along the circumferential direction, and an oil cavity 112 is formed between the plurality of spacers 111;
[0030] like Figure 3 and Figure 4 As shown, in embodiment a, a screw hole 41 parallel to the axial direction of the stator ring 11 is opened on one side of the spacer 111 facing the outer cover plate 3, and the outer cover plate 3 is provided with mounting through holes 42 corresponding to the screw holes 41 one by one, and bolts 43 screwed to the screw holes 41 are arranged in the mounting through holes 42. The screw holes 41 are arranged in the spacer 111 to make the layout more reasonable, ensuring that after the bolts 43 are screwed to the screw holes 41, the outer cover plate 3 has a better connection strength relative to the stator ring 11;
[0031] like Figure 5 and Figure 6As shown, in embodiment b, the spacer 111 is provided with a mounting through hole 42 parallel to the axial direction of the stator ring 11, 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, the mounting through holes 42 are provided with bolts 43 screwed to the screw holes 41, and the mounting through holes 42 are arranged on the spacer 111 to make the layout more reasonable, ensuring that after the bolts 43 are screwed to the screw holes 41, the outer cover plate 3 has a better connection strength relative to the stator ring 11.
[0032] It should be noted that, in the description of the present application, the terms "inside", "outside", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely 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 cannot be understood as a limitation on the present application. All directional indications (such as up, down, left, right, front, back, inside, and outside) are only used to explain the relative positional relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0033] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0034] The above is only a specific implementation 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 a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on 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).