A side-mounted OCV valve

Abstract

The utility model provides a kind of side formula OCV valve, including valve body, spring, coil assembly, valve core, jacking rod, reversing rod, guide sleeve and outer cover;Wherein, the spring, reversing rod and jacking rod are sequentially arranged in valve body from top to bottom;The reversing rod is slidably connected with valve body;The coil assembly is fixedly arranged in the inside of outer cover;The upper end of the outer cover is integrally formed with the ring seat extending to the inside;The upper end of the guide sleeve is fixedly connected on the ring seat, and the lower end extends into the inside of coil assembly;The upper end surface of the ring seat is fixedly provided with bracket, and the valve body is fixedly sleeved on the inside of bracket;The valve core is slidably arranged in the inside of the guide sleeve.The utility model has the advantages of reasonable structure design and low cost.

Description

Technical Field

[0001] This utility model relates to the technical field of variable valve timing systems for engines, and in particular, to a side-mounted OCV valve. Background Technology

[0002] Variable valve timing (VVT) adjusts the amount of intake (exhaust) air and the valve opening and closing time and angle to optimize the amount of air entering the engine, thereby improving combustion efficiency. A VVT system consists of an open-circuit valve (OCV) and a valve timing regulator (VCP). By adjusting the engine camshaft phase, the intake air volume changes with engine speed, thus achieving optimal combustion efficiency and improving fuel economy.

[0003] Currently, OCV valves on the market typically have a base that is an independent part, which is fixed to the outer cover by a press-fitting method in order to ensure product performance. However, the manufacturing cost of OCV valves with this structure is always high, which cannot enhance the price competitiveness of enterprises. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a side-mounted OCV valve, which has the characteristics of reasonable structural design.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A side-mounted OCV valve includes a valve body, a return spring, a coil assembly, a valve core, a push rod, a reversing rod, a guide sleeve, and an outer cover. The return spring, reversing rod, and push rod are sequentially arranged within the valve body from top to bottom. The reversing rod slides into the valve body. The coil assembly is fixedly mounted inside the outer cover. An inwardly extending annular seat is integrally formed at the upper end of the outer cover. The upper end of the guide sleeve is fixedly connected to the annular seat, and its lower end extends into the coil assembly. A bracket is fixedly mounted on the upper surface of the annular seat, and the valve body is fixedly sleeved inside the bracket. The valve core slides within the guide sleeve.

[0006] Preferably, the upper end of the guide sleeve is integrally formed with an outwardly extending ring, and the bottom surface of the ring is in contact with the upper end surface of the ring seat.

[0007] Preferably, the inner side of the ring seat is integrally provided with a collar adapted to the guide sleeve; the coil assembly is fixedly nested between the collar and the outer cover.

[0008] Preferably, the lower end of the valve body is in contact with the top surface of the ring plate.

[0009] Preferably, the bottom of the bracket is welded and fixed to the upper end face of the ring seat.

[0010] Preferably, the upper end face of the ring seat is provided with a plurality of protrusions spaced circumferentially.

[0011] Preferably, the lower end face of the valve body has a concave shoulder, and an annular groove is formed between the concave shoulder and the top surface of the annular plate, and a first O-ring is tightly disposed in the annular groove.

[0012] Preferably, the reversing rod, push rod, and valve core are all arranged vertically through each other, and the upper end of the valve body is open and fitted with a filter cover, which has several fine holes.

[0013] The main technical effects of this utility model are reflected in the following aspects: The outer cover and ring seat are integrated into a single structure, manufactured through a stretching process. The ring seat replaces the traditional base, reducing component and process costs. The inner cover is mounted on the outer cover via a ring plate, and a seal is achieved through laser welding. This eliminates the need for O-ring seals between the inner and outer covers. The reduced number of O-rings in the sealing structure design lowers the risk of seal failure. The inner cover is installed on the outer cover, and the oil pressure is applied to the inside of the inner cover without being fed back to the coil; The valve body adopts a side riveting structure (i.e., it is fixedly sleeved inside the bracket), and there is no need to design a flange structure for riveting at the bottom of the valve body. Therefore, the material cost and processing cost of the valve body can be greatly reduced. The bracket and outer cover are welded and fixed to strengthen the overall structure; By optimizing the structure of the commutator, the amount of metal material used in the commutator is reduced, and the processing difficulty is lowered, which helps to reduce material costs and improve processing efficiency.

[0014] The overall length of the coil is reduced, and the amount of enameled wire used in the coil winding is also reduced. Attached Figure Description

[0015] Figure 1 This is an exploded view of the side-mounted OCV valve in the embodiment; Figure 2 This is a cross-sectional view of the side-mounted OCV valve in the embodiment; Figure 3 for Figure 2 Enlarged view of section A; Figure 4 This is a structural diagram of the commutator in the embodiment; Figure 5 This is a structural diagram of the push rod in the embodiment; Figure 6 This is a structural diagram of the outer cover and guide sleeve in the embodiment.

[0016] Reference numerals: 1. Filter cover; 2. Return spring; 3. Valve body; 31. Oil passage A; 32. Oil passage P; 33. Oil passage B; 34. Spring seat; 35. First sliding cavity; 36. Limiting shoulder; 37. Second sliding cavity; 38. Annular groove; 4. Filter ring; 5. Reversing rod; 51. Rod body; 52. Upper sliding ring; 53. Lower sliding ring; 6. Top rod; 61. Annular slide seat; 62. Center rod; 63. Connecting rib; 64. Top block; 7. Bracket; 8. First O-ring; 9. Valve core; 10. Guide sleeve; 101. Ring plate; 11. Outer cover; 111. Ring seat; 112. Protrusion; 113. Collar ring; 12. Coil assembly; 13. Second O-ring. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0018] Reference Figure 1-2 This embodiment aims to provide a side-mounted OCV valve, including a valve body 3, a return spring 2, a coil assembly 12, a valve core 9, a push rod 6, a bracket 7, a reversing rod 5, a guide sleeve 10, and an outer cover 11.

[0019] The valve body 3 has oil passages A 31, P 32, and B 33 spaced apart from top to bottom on its surface. Filter rings 4, with fine pores on their surface, are nested at positions located in oil passages A 31 and B 33. A second O-ring is also fitted onto the valve body 3 to improve sealing after installation.

[0020] The return spring 2, the reversing rod 5, and the push rod 6 are arranged sequentially from top to bottom inside the valve body 3. The return spring 2 is generally conical, with its upper end abutting against the spring seat 34 formed on the inner wall of the valve body 3, and its lower end extending into the upper slip ring 52 and abutting against the upper end of the rod 51.

[0021] Reference Figure 2-4 The valve body 3 has a first sliding cavity 35 formed in the middle of its interior, and the reversing rod 5 is slidably disposed within the first sliding cavity 35. Specifically, the reversing rod 5 includes a rod body 51, and an upper sliding ring 52 and a lower sliding ring 53 are integrally formed at the upper and lower ends of the rod body 51, respectively. Both the upper sliding ring 52 and the lower sliding ring 53 are slidably engaged with the first sliding cavity 35. The outer diameter of the upper sliding ring 52 and the lower sliding ring 53 is larger than the outer diameter of the rod body 51.

[0022] Reference Figure 2 , Figure 6The outer cover 11 has openings at both the top and bottom, and the upper end has an integrally formed inwardly extending ring seat 111. The inner side of the ring seat 111 has an integrally formed collar 113 that fits with the guide sleeve 10. The guide sleeve 10 is fixedly fitted inside the collar 113. The lower end of the guide sleeve 10 is closed, and the upper end is open, thus forming a first sliding cavity inside; and the upper end has an integrally formed outwardly extending ring piece 101. The bottom surface of the ring piece 101 fits against the upper end surface of the ring seat 111, or the two can be further welded together for fixation.

[0023] The collar 113 extends to the lower end of the outer cover 11, thereby allowing the coil assembly 12 to be fixedly nested between the collar 113 and the outer cover 11.

[0024] The bottom of the bracket 7 is welded and fixed to the upper end face of the ring seat 111. At the same time, several protrusions 112 are arranged circumferentially at intervals on the upper end face of the ring seat 111, so that the protrusions 112 can be melted and flattened during welding. The valve body 3 is fixedly sleeved inside the bracket 7. Specifically, the valve body 3 is pressed into the bracket 7 from top to bottom through a riveting process, so that the lower end of the valve body 3 fits against the top surface of the ring plate 101.

[0025] The valve core 9 is slidably disposed inside the guide sleeve 10. When the control coil is energized, the valve core 9 is driven upward by electromagnetic force, which simultaneously drives the reversing rod 5 upward via the push rod 6. When the control coil is de-energized, the return spring 2 pushes the reversing rod 5 downward, which in turn drives the valve core 9 downward via the push rod 6. Furthermore, the reversing rod 5, push rod 6, and valve core 9 are all vertically continuous. The upper end of the valve body 3 is open and fitted with a filter cover 1, which has several fine holes. This allows external engine oil to smoothly enter the guide sleeve 10, enabling the valve core 9 to slide smoothly up and down.

[0026] The reversing lever 5 can change the connection between oil passage A 31, oil passage P 32 and oil passage B 33 during the up and down movement, thereby controlling the direction of the oil passage. This is existing technology and will not be described in detail in this embodiment.

[0027] The lower end face of the valve body 3 has a concave shoulder, and an annular groove 38 is formed between the concave shoulder and the top surface of the annular plate. A first O-ring 8 is tightly disposed in the annular groove 38. By providing the first O-ring 8, the sealing performance of the lower end of the valve body 3 can be increased, preventing dust from entering and affecting the displacement of the valve core 9.

[0028] Reference Figure 5 The top rod 6 is integrally formed by injection molding, specifically including an annular slide 61 and a central rod 62 disposed inside the annular slide 61. The central rod 62 is connected to the annular slide 61 by several connecting ribs 63. The upper end of the annular slide 61 extends upward to form a top block 64 that abuts against the reversing rod 5. The lower end of the central rod 62 abuts against the valve core 9.

[0029] The lower part of the valve body 3 forms a second sliding cavity 37, and the annular slide 61 is slidably disposed within the second sliding cavity 37. The inner diameter of the second sliding cavity 37 is smaller than the inner diameter of the first sliding cavity 35, and a limiting shoulder 36 is formed at the junction of the two. The limiting shoulder 36 is used to cooperate with the upper end face of the annular slide 61 to limit the upward movement of the annular slide 61, thereby achieving the purpose of limiting the stroke of the valve core 9.

[0030] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A side-mounted OCV valve, comprising a valve body (3), a return spring (2), a coil assembly (12), a valve core (9), a push rod (6), a reversing rod (5), a guide sleeve (10), and an outer cover (11); wherein, The reset spring (2), reversing rod (5) and top rod (6) are arranged sequentially from top to bottom inside the valve body (3); the reversing rod (5) slides with the valve body (3); characterized in that the coil assembly (12) is fixedly arranged inside the outer cover (11); the upper end of the outer cover (11) is integrally formed with an inwardly extending ring seat (111); the upper end of the guide sleeve (10) is fixedly connected to the ring seat (111), and the lower end extends into the coil assembly (12); the upper end face of the ring seat (111) is fixedly provided with a bracket (7), and the valve body (3) is fixedly sleeved inside the bracket (7); the valve core (9) slides inside the guide sleeve (10).

2. The side-mounted OCV valve according to claim 1, characterized in that, The upper end of the guide sleeve (10) is integrally formed with an outwardly extending ring piece (101), and the bottom surface of the ring piece (101) is in contact with the upper end surface of the ring seat (111).

3. A side-mounted OCV valve according to claim 1, characterized in that, The inner side of the ring seat (111) is integrally provided with a collar (113) adapted to the guide sleeve (10); the coil assembly (12) is fixedly nested between the collar (113) and the outer cover (11).

4. A side-mounted OCV valve according to claim 2, characterized in that, The lower end of the valve body (3) is in contact with the top surface of the ring plate (101).

5. A side-mounted OCV valve according to claim 2, characterized in that, The bottom of the bracket (7) is welded and fixed to the upper end face of the ring seat (111).

6. A side-mounted OCV valve according to claim 5, characterized in that, The upper end face of the ring seat (111) is provided with a plurality of protrusions (112) spaced circumferentially.

7. A side-mounted OCV valve according to claim 2, characterized in that, The lower end face of the valve body (3) has a concave shoulder, and an annular groove (38) is formed between the concave shoulder and the top surface of the annular plate. A first O-ring (8) is tightly disposed in the annular groove (38).

8. A side-mounted OCV valve according to claim 1, characterized in that, The reversing rod (5), the push rod (6) and the valve core (9) are all arranged vertically through each other. The upper end of the valve body (3) is open and a filter cover (1) is installed. The filter cover (1) has several fine holes.

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