Temperature control type driven plate assembly

Abstract

The utility model relates to a temperature control type driven plate assembly, which is used for a straight plate type silicone oil fan clutch and comprises a driven plate, a valve plate and a limiting plate, and the valve plate and the limiting plate are arranged on the driven plate. An oil outlet hole is formed in the driven plate; the valve plate is a bent plate body, one end of the valve plate is fixedly connected with the driven plate, and the other end of the valve plate is located above the oil outlet hole; the limiting piece is a Z-shaped body and used for limiting the valve piece, one end of the limiting piece is fixedly connected with the driven plate, and the other end of the limiting piece is located above the valve piece. The valve can sensitively respond to temperature changes, and accurate control over the displacement of the valve plate is achieved.

Description

Technical Field

[0001] The utility model relates to the field of cooling systems, in particular to a high-precision and high-efficiency temperature-controlled driven plate component used in a straight-plate silicone oil fan clutch. Background Art

[0002] With the continuous application and promotion of current electronically controlled engines, customers are paying more and more attention to the power consumption of engine fuel systems. In order to maximize fuel consumption and extend the service life of engine cooling system components, the promotion and application of electronically controlled silicone oil fan clutch technology has greatly met the above requirements of customers.

[0003] When working in a high temperature environment, the existing silicone oil fan clutch will cause the clutch separation speed to slow down due to temperature rise; this is because as the temperature rises, the temperature rise of the clutch slows down the reset speed of the temperature sensor, resulting in the clutch separation process being not fast enough; different working environments and conditions will lead to differences in temperature rise, which in turn affects the response speed of the temperature sensor and the performance of the clutch.

[0004] Therefore, there is still room for improvement in the silicone oil fan clutch of the prior art. Utility Model Content

[0005] The utility model aims to provide a high-precision and efficient temperature-controlled driven plate assembly for a straight-plate silicone oil fan clutch, which has a reliable structure and consistent product quality, so as to solve the existing technical problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A temperature-controlled driven plate assembly is used for a straight-plate silicone oil fan clutch, the driven plate assembly comprising a driven plate, a valve plate and a limit plate arranged on the driven plate; the driven plate is provided with an oil outlet hole; the valve plate is a bent plate body, one end of the valve plate is fixedly connected to the driven plate, and the other end of the valve plate is located above the oil outlet hole; the limit plate is a zigzag shape, used to limit the valve plate, one end of the limit plate is fixedly connected to the driven plate, and the other end of the limit plate is located above the valve plate.

[0008] In the temperature-controlled driven plate assembly described in the preferred embodiment of the present application, the limiting plate is a bimetallic plate that bends when heated.

[0009] In the temperature-controlled driven plate assembly described in the preferred embodiment of the present application, the thickness of the limiting plate is 0.43 mm.

[0010] In the temperature-controlled driven plate assembly described in the preferred embodiment of the present application, the valve plate is a spring plate, and the elastic force of the valve plate matches the elastic force of the limit plate.

[0011] The design concept of this application is to provide an improved temperature-controlled driven plate assembly that takes into account the impact of temperature on clutch performance; when operating under high temperature conditions, the bimetallic stopper in the driven plate assembly will deform, and this deformation will act on the valve plate, causing the valve plate to lower its bounce height, thereby accelerating the separation process of the silicone oil fan clutch. This design ensures that even under high temperature working conditions, the clutch can still respond quickly, maintaining the normal operation of the engine cooling system and the optimal operating temperature of the engine.

[0012] Due to the adoption of the above technical solution, the utility model has the following advantages and effects:

[0013] First, by using bimetallic materials, the component can sensitively respond to temperature changes and achieve precise control of valve displacement;

[0014] Second, the design of the limiter ensures that its elastic force is between 10-15N, matching the elastic force of the valve plate.

[0015] Ensure the stability and reliability of components;

[0016] Third, the lever principle is used to optimize the position and size of the limit plate, reducing the risk of fatigue damage to the limit plate caused by the elastic force of the valve plate;

[0017] Fourth, the overall design improves the working efficiency and service life of the silicone oil fan clutch.

[0018] Of course, implementing any specific embodiment of the present application does not necessarily have all of the above technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the silicone oil fan clutch for this application;

[0020] Figure 2 This is an exploded diagram of the upper cover assembly of this application;

[0021] Figure 3 This is a schematic top view of the outer surface of the upper cover assembly of the present application;

[0022] Figure 4 Schematic diagram of the connection between the adjusting screw, pin, sealing cover and oil-containing bearing for this application;

[0023] Figure 5 This is a schematic cross-sectional view of the upper cover assembly of this application;

[0024] Figure 6 This is an exploded schematic diagram of the lower shell assembly of this application;

[0025] Figure 7 This is a cross-sectional schematic diagram of the lower shell assembly of this application;

[0026] Figure 8 for Figure 7 Partially enlarged schematic diagram;

[0027] Fig. 9 This is a schematic diagram of the driven plate assembly of this application;

[0028] Fig.10 This is an exploded schematic diagram of the driven plate assembly of this application;

[0029] Fig.11 This is a schematic diagram of the heat change of the limiter in this application;

[0030] Fig.12 This is a schematic diagram of the thermal changes of the limit plate and valve plate in this application. DETAILED DESCRIPTION

[0031] For ease of understanding, preferred embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0032] Please refer to Figure 1 Schematic diagram of the silicone oil fan clutch of the present application. The temperature sensing plate used in the silicone oil fan clutch of the present application is a straight-plate temperature sensing plate, so it is also called a straight-plate silicone oil fan clutch. It is a silicone oil fan clutch used in engine cooling systems and rail vehicle piston compressor cooling systems and other fields. The present application controls the fan cooling air volume by adjusting the speed to maintain the engine at the optimal operating temperature. It is particularly suitable for changing environmental conditions, thereby improving engine efficiency and extending its service life.

[0033] Please also refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The silicone oil fan clutch comprises an upper cover assembly, a lower shell assembly and a driven plate assembly 5, wherein the upper cover assembly is arranged on the lower shell assembly to form an accommodating space, the driven plate assembly 5 is arranged on the upper cover assembly and located in the accommodating space, and the driven plate assembly 5 is used to adjust the oil output of the oil storage chamber, thereby affecting the speed of the fan; the upper cover assembly comprises an upper cover 1, a temperature sensing plate 8, two temperature sensing plate brackets 10, an adjusting screw 14, a pin 6, a sealing cover 13 and an oil-containing bearing 7, wherein, as Figure 2 and Figure 3As shown, two fixing columns 101 are provided on the outer surface of the upper cover 1 for limiting the temperature sensing piece 8. The upper cover 1 is an aluminum alloy die-casting, which is light and high-strength. The temperature sensing piece 8 is a straight plate type temperature sensing piece that is deformed by heat. Waist-shaped holes 801 are provided at both ends of the temperature sensing piece 8 for movement when deformed. The middle of the temperature sensing piece 8 includes an internal threaded hole 802. As the core of the temperature control system, the straight plate type temperature sensing piece 8 can sensitively respond to the temperature change of the environment. The two temperature sensing piece supports The frame 10 is a concave piece including a middle through hole 1001. During assembly, the fixing column 101 passes through the waist-shaped hole 801 and the middle through hole 1001, and then the fixing column 101 is riveted to connect to the temperature sensing plate bracket 10. Specifically, the fixing column 101 is riveted to connect to the middle through hole 1001. After riveting, the fixing column 101 is fixedly connected to the temperature sensing plate bracket 10 to limit the temperature sensing plate 8 therein. When the temperature sensing plate 8 is deformed, it can move within the range of the waist-shaped hole 801.

[0034] Please refer to Figure 4 This application shows a schematic diagram of the connection between the adjusting screw, pin, sealing cover and oil-containing bearing, and it is an enlarged diagram. Figure 4 It can be seen that the oil-containing bearing 7 is arranged in the through hole of the upper cover 1, which is an interference fit. The oil-containing bearing 7 will not move up and down in the through hole, and the oil-containing bearing 7 and the pin 6 constitute a piston mechanism to reduce friction and wear during movement; the pin 6 is movably arranged in the oil-containing bearing 7, and the movement mode of the pin 6 is the up and down movement shown in the figure. One end of the pin 6 is arranged in the sealing cover 13, and the pin 6 and the sealing cover 13 are interference fit; the sealing cover 13 is arranged in the internal threaded hole 802, and the sealing cover 13 can move up and down in the internal threaded hole 802 to adjust the height of the pin 6, and the adjusting screw 14 is screwed into the internal threaded hole 802 to adjust the height of the pin 6, such as Figure 5 As shown, the other end of the pin shaft 6 is movably connected to the driven plate assembly 5. When the temperature-sensitive sheet 8 is deformed by heat, it drives the pin shaft 6 to move upward. The valve plate 502 of the driven plate assembly 5 abutting against the pin shaft 6 moves upward, causing the amount of silicone oil flowing out of the oil outlet hole 50101 to increase. The valve plate 502 is connected to the temperature-sensitive sheet 8, specifically, it is connected to the pin shaft 6 connected to the temperature-sensitive sheet 8. The pin shaft 6 transmits the mechanical movement caused by the temperature-sensitive sheet 8, amplifies the deformation of the temperature-sensitive sheet 8 through the lever principle, and then controls the opening and closing of the valve plate 502. Figure 4In the present application, a follower plate assembly 5 matching the temperature sensing plate 8 is designed through the lever principle, and the piston part is designed by utilizing the advantages of the self-lubricating property and reduced resistance of the oil-containing bearing 7. In order to ensure that the interior of the piston is not affected by impurities such as dust, a sealing cover 13 is added to the pin shaft 6, which fundamentally solves the dust prevention problem and improves the reliability of the temperature control system. The so-called lever in the present application refers to the pin shaft 6 abutting against the middle part of the valve plate 502, and the pin shaft 6 has a lever-like effect on the valve plate 502, that is, the distance moved by the end of the valve plate 502 is greater than the distance moved by the pin shaft 6.

[0035] like Figure 4 As shown, the sealing cover 13 includes a hollow straight cylinder portion and a fan-shaped portion, the fan-shaped portion is used to prevent dust and impurities, the pin shaft 6 is fixedly connected to the lower end of the hollow straight cylinder portion of the sealing cover 13, the adjusting screw 14 is connected to the upper end of the hollow straight cylinder portion of the sealing cover 13, and the fan-shaped portion is abutted against the upper end surface of the oil-containing bearing 7.

[0036] Please refer to Figure 6 , Figure 7 and Figure 8 The lower shell assembly includes a lower shell 2, a bearing 11, a fastening ring 201, a lower end cover 202, an intermediate plate 3, an adjusting gasket 301 and a driving shaft 4, wherein the lower shell 2 is made of aluminum alloy to provide good thermal conductivity and structural stability; the bearing 11 is arranged in the bearing seat of the lower shell 2, the bearing seat is an annular groove, the fastening ring 201 is sleeved on the outer wall of the annular groove connected to the bearing seat, and the fastening ring 201 is gear-shaped, and the gear-shaped structure and thermal expansion coefficient design match the material of the bearing 11 to ensure the stability of the structure when the temperature changes, and ensure that the expanded size is the same as the expanded size of the bearing 11, so as to maintain the stability of the assembly clearance of the bearing 11 at different temperatures and avoid the damage caused by temperature difference changes. Structural deformation ensures smooth rotation of the fan; the driving shaft 4 is arranged in the bearing 11 and can rotate stably. The driving shaft 4 is located at one end of the accommodating space and is inserted into and connected to the adjusting gasket 301 and the middle plate 3. The design of the driving shaft 4 ensures the connection with the engine flange, making it a power output conduction component. The driving shaft 4 is made of high-strength material to withstand the torque and vibration generated when the engine is running; the driving shaft 4 is fixedly connected to the inner hole of the adjusting gasket 301 and the inner hole of the middle plate 3 by interference fit. The middle plate 3 cooperates with the adjusting gasket 301, and the output of the power source, and the size of its surface area determines the torque value of the product. The adjusting gasket 301 is used to fine-tune the distance between the middle plate 3 and the working surface of the lower shell 2.

[0037] like Figure 6As shown, the lower shell assembly also includes a lower end cover 202, which is an annular hollow body. The lower end cover 202 is arranged on the inner end surface of the lower shell 2 to increase the force transmission area and reduce the product weight.

[0038] Fig. 9 and Fig.10 Schematic diagram of the driven plate assembly of the present application and schematic diagram of the explosion of the driven plate assembly; the present application takes into account the effect of temperature on the performance of the clutch. When operating under high temperature conditions, the increase in the temperature of the silicone oil will cause the silicone oil concentration in the silicone oil fan clutch to gradually become thinner, affecting the fan speed, thereby reducing the normal operation of the cooling system. In this case, the bimetallic limit plate 503 in the driven plate assembly 5 will deform, and this deformation will act on the valve plate 502, causing the valve plate 502 to have a lower bounce height, thereby reducing the silicone oil flowing into the working area, ensuring the silicone oil concentration, and thus accelerating the separation process of the silicone oil fan clutch; this design has been carefully calculated to ensure that even under high temperature working conditions, the clutch can still respond quickly to maintain the normal operation of the engine cooling system and the optimal operating temperature of the engine; in this way, the design of the clutch adapts to high temperature environments and improves its reliability and efficiency under various working conditions.

[0039] like Fig.10 As shown, the driven plate assembly 5 includes a driven plate 501, a valve plate 502 and a limit plate 503 arranged on the driven plate 501; the driven plate 501 is provided with an oil outlet hole 50101, and a riveting boss is arranged at a position corresponding to the connection between the valve plate 502 and the limit plate 503; the valve plate 502 is a bent plate body, and the valve plate 502 is used to control the amount of silicone oil flowing from the oil storage cavity through the oil outlet hole 50101 into the working area. When the valve plate 502 completely covers the oil outlet hole 50101, the silicone oil cannot flow into the working area from the oil outlet hole 50101. On the contrary, the valve plate 502 and the oil outlet hole 5 The greater the distance from 0101, the greater the amount of silicone oil flowing into the working area. One end of the valve plate 502 is fixedly connected to the driven plate 501. The connection method in the embodiment of the present application is to open two riveted through holes on the valve plate 502, and the riveted boss passes through the riveted through holes for riveted connection, but it cannot be used to limit the present application. For example, welding method, as long as it can be firmly connected, it should be within the scope of protection of the present application; the other end of the valve plate 502 is located above the oil outlet hole 50101. When the ambient temperature changes, the valve plate 502 is affected by the pin shaft 6 to approach or leave the oil outlet hole 50101, thereby affecting the flow rate of silicone oil.

[0040] Fig.10In the embodiment, the limiting plate 503 is a zigzag shape, which is used to limit the valve plate 502. The limiting plate 503 of the present application optimizes the mechanical properties of the limiting plate 503 by calculating parameters such as elastic modulus, Poisson's ratio, and elastic constant, ensuring its elastic force between 10-15N, and its reliability and durability in high temperature environment. It should be noted that the limiting plate 503 mainly senses the temperature of the silicone oil; one end of the limiting plate 503 is fixedly connected to the driven plate 501. The connection method in the embodiment of the present application is to open three riveted through holes on the limiting plate 503, and the riveted convex The platform is riveted through-hole for riveting connection, but it cannot be used to limit the present application. For example, welding method, as long as the method can be stably connected, it should be within the scope of protection of the present application; the other end of the limit plate 503 is located above the valve plate 502, so that the rising height of the valve plate 502 will not be too high. The present application adopts the lever principle to optimize the position and size of the limit plate 503, reducing the risk of fatigue damage to the limit plate 503 caused by the elastic force of the valve plate 502. The position of the limit plate 503 is between the oil outlet hole 50101 and the center point of the driven plate 501.

[0041] Preferably, the limiting piece 503 is a bimetallic piece that bends when heated. In the embodiment of the present application, the thickness of the limiting piece 503 is 0.43 mm. The design of the limiting piece 503 takes into account its bending behavior under temperature changes. Through precise calculation and experimental verification, the optimal size and shape are determined to achieve rapid and accurate thermal response. Fig.11 As shown in FIG. 1 , when the temperature of the silicone oil increases, the high point limit portion of the limit plate 503 changes from a nearly horizontal state in the upper figure to a downwardly inclined state in the lower figure. In the embodiment of the present application, the material TB208 / 110 is used. This material will produce different expansion or contraction degrees under temperature changes, thereby achieving precise control of the displacement of the valve plate 502. Fig.12 As shown, when the temperature of the silicone oil rises, as the limit plate 503 deforms, the valve plate 502 is limited at a height closer to the oil outlet hole 50101; in this application, the width and length of the limit plate 503 are determined according to precise mechanical calculations to ensure that stable supporting force and elastic force are provided at different temperatures.

[0042] Preferably, the valve plate 502 is a spring plate, and the elastic force of the valve plate 502 matches the elastic force of the limiting plate 503, that is, the force generated at the bimetallic thermal deformation of the limiting plate 503 can control the displacement of the valve plate 502 and the elastic force of the valve plate 502 will not cause permanent deformation to the bimetallic material of the limiting plate 503; the valve plate 502 is affected by the pin shaft 6 and approaches the oil outlet 50101. After the influence of the pin shaft 6 is eliminated, the valve plate 502 moves upward under the action of its own elastic force until it is limited by the limiting plate 503; the elastic force of the valve plate 502 of the present application is carefully designed to ensure that it matches the elastic force of the limiting plate 503 to provide stable working performance and service life.

[0043] How this application works:

[0044] 1. Temperature control system: The temperature sensing plate 8 senses temperature changes, and transmits deformation to the pin shaft 6 through the temperature sensing plate bracket 10 and the adjusting screw 14, thereby affecting the valve plate 502 in the driven plate assembly 5 to open or close the oil outlet 50101. When the ambient temperature rises, the temperature sensing plate 8 pushes the valve plate 502 to open the oil outlet 50101, and the silicone oil flows into the working chamber under the action of centrifugal force, and the torque is transmitted through the viscosity of the silicone oil, so that the fan rotates at high speed. When the ambient temperature drops, the temperature sensing plate 8 pushes the valve plate 502 to close the oil outlet 50101, and the silicone oil flows back to the oil storage chamber through the oil return hole under the action of centrifugal force. Without the torque transmitted by the silicone oil, the fan speed becomes lower.

[0045] 2. Driving system: It plays the role of power input and output. When the temperature rises, the oil outlet hole 50101 opens, and the silicone oil flows into the working chamber. The torque is transmitted by utilizing the viscosity of the silicone oil, so that the fan can achieve a cooling effect. When the temperature drops, the oil outlet hole 50101 closes, and the silicone oil flows back to the oil storage chamber under the action of centrifugal force, and the fan enters a separated state.

[0046] It should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0047] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0048] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0049] Due to the adoption of the above technical solution, the utility model has the following advantages and effects:

[0050] First, by using bimetallic materials, the component can sensitively respond to temperature changes and achieve precise control of valve displacement;

[0051] Second, the design of the limiter ensures that its elastic force is between 10-15N, matching the elastic force of the valve plate.

[0052] Ensure the stability and reliability of components;

[0053] Third, the lever principle is used to optimize the position and size of the limit plate, reducing the risk of fatigue damage to the limit plate caused by the elastic force of the valve plate;

[0054] Fourth, the overall design improves the working efficiency and service life of the silicone oil fan clutch.

[0055] Of course, any specific embodiment of the present invention does not necessarily have all of the above technical effects at the same time.

[0056] The above disclosure is only a preferred embodiment of the present invention, but is not intended to limit itself. Any equivalent changes and modifications made by any technician familiar with the field without violating the spirit and connotation of the present invention should fall within the protection scope of the present invention.

Claims

1. A temperature-controlled driven plate assembly for a straight plate type silicone oil fan clutch, characterized in that: The driven plate assembly comprises a driven plate, a valve plate and a limit plate arranged on the driven plate; the driven plate is provided with an oil outlet hole; The valve plate is a bent plate, one end of the valve plate is fixedly connected to the driven plate, and the other end of the valve plate is located above the oil outlet hole; The limiting plate is in a zigzag shape and is used to limit the valve plate. One end of the limiting plate is fixedly connected to the driven plate, and the other end of the limiting plate is located above the valve plate.

2. The temperature controlled driven plate assembly according to claim 1, characterized in that: The limiting piece is a bimetallic piece that bends when heated.

3. The temperature controlled driven plate assembly according to claim 2, characterized in that: The thickness of the limiting plate is 0.43 mm.

4. The temperature controlled driven plate assembly according to claim 3, characterized in that: The valve plate is a spring plate, and the elastic force of the valve plate matches the elastic force of the limiting plate.

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