Electric heating push rod for electronic thermostat

Abstract

The invention provides an electric heating push rod for an electronic thermostat, and relates to the technical field of electric heating push rods, the electric heating push rod comprises an electric heating push rod body, the electric heating push rod body comprises a protective shell, a plug, two heating elements, two pairs of core bodies and two pairs of contact pins, the upper surface of the protective shell is fixedly connected with a first connecting shell, and the upper surface of the first connecting shell is fixedly connected with a second connecting shell; the right surface of the second connecting shell is fixedly connected with a connecting block, the right end of the connecting block is fixedly connected with a connecting plate, the two pairs of core bodies are fixedly connected with the two heating elements and the two pairs of contact pins respectively, and the other two contact pins are located in the middle of the interior of the plug to wait for being connected with an electronic thermostat socket. When the electronic thermostat breaks down, the contact pin can be quickly switched to be connected with the other push rod, it is guaranteed that the basic functions of the electronic thermostat are not affected, normal operation of a cooling system is maintained, the risk that an engine is overheated or overcooled due to the failure of the thermostat is reduced, and the reliability and stability of the whole system are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electric heating push rods, and more specifically, particularly relates to an electric heating push rod for an electronic thermostat. Background Art

[0002] The electronic thermostat plays a critical role in the automotive engine cooling system. It maintains the engine operating within a suitable operating temperature range by precisely controlling the circulation path and flow of the coolant. The electric push rod used in the electronic thermostat is one of the core components to achieve this precise control. It can push the thermostat valve to open or close according to the engine's operating conditions, thereby adjusting the flow direction and flow of the coolant.

[0003] In the working process of the electronic thermostat, the following key parts are usually involved: 1. Heating element: It is the source of power for the electric heating push rod. It is generally made of materials with good resistance characteristics and high temperature resistance, such as nickel-chromium alloy. When current passes through, it can quickly generate heat and cause the push rod to move.

[0004] 2. Push rod body: It includes the outer shell and the core. The outer shell is mostly made of metal materials such as stainless steel, which has high strength and corrosion resistance and can effectively protect the internal structure. The core is usually made of special alloys with good thermal expansion performance. It can stretch axially when heated, thereby pushing the thermostat valve to operate.

[0005] 3. Sealing components: Rubber sealing rings are often used and installed at the contact point between the electric push rod and the thermostat housing and the coolant. Their function is to prevent the coolant from leaking into the push rod, while avoiding the invasion of external impurities to ensure the stability of the internal environment of the push rod. The material must withstand the corrosion of the coolant and repeated changes in high and low temperatures.

[0006] 4. Connecting components: One end is connected to the external power supply through a wire connector. The connector is required to have good conductivity and connection reliability to ensure stable power transmission. The other end is connected to the thermostat valve with the help of a mechanical connection structure, such as a pin or a slot, to ensure that the displacement of the push rod can be accurately converted into a change in the valve opening.

[0007] At present, in the application of electric heating push rods in electronic thermostats, the common design focuses on the performance optimization of a single push rod and the stability of the connection with the thermostat. Some manufacturers use high-precision processing technology to improve the thermal expansion accuracy and mechanical strength of a single push rod, while some manufacturers focus on improving the design of connecting parts to enhance their anti-vibration and anti-loosening capabilities.

[0008] However, the above-mentioned prior art still has some shortcomings. In terms of the reliability of the push rod, once a single push rod fails, such as the heating element is damaged or the push rod is stuck, the control function of the entire electronic thermostat will be seriously affected, which may cause the engine cooling system to lose control and cause serious problems such as engine overheating. In view of these problems, the present application proposes an innovative solution to design an electric heating push rod for an electronic thermostat with a double push rod structure and a stable plug connection that is easy to replace. When one push rod fails, the maintenance personnel can manually switch to another push rod to work quickly. At the same time, the plug connection is stable and reliable, which effectively improves the overall performance and reliability of the electronic thermostat and ensures the stable operation of the engine cooling system.

[0009] In view of this, the existing structure and defects are studied and improved, and an electric heating push rod for an electronic thermostat is provided, in order to achieve a more practical purpose. Summary of the invention

[0010] In order to solve the above technical problems, the present invention provides an electric heating push rod for an electronic thermostat to solve the above problems.

[0011] The electric heating push rod for an electronic thermostat comprises an electric heating push rod body, the electric heating push rod body comprises a protective shell, a plug, two heating elements, two pairs of core bodies and two pairs of pins, the upper surface of the protective shell is fixedly connected with a connecting shell 1, the upper surface of the connecting shell 1 is fixedly connected with a connecting shell 2, the right surface of the connecting shell 2 is fixedly connected with a connecting block, the right end of the connecting block is fixedly connected with a connecting plate, the two pairs of core bodies are respectively fixedly connected with the two heating elements and the two pairs of pins, the two pairs of core body annular side surfaces are movably sleeved with sleeves, the left surface of the plug is fixedly connected with two T-blocks, the upper and lower sides of the connecting block are provided with a card slot three, the two card slots three are movably clamped with fixed blocks, the two fixed blocks are fixedly connected with sliders on the back sides, the two sliders are fixedly connected with limiting blocks on the back sides, and the right surface of the connecting plate is provided with two card slots two, the two card slots two are movably clamped with the two T-blocks respectively.

[0012] Preferably, the left surfaces of the two fixed blocks are fixedly connected with cylindrical coil springs, and the two cylindrical coil springs are respectively fixedly connected with two clamping grooves three, and the left surface of the connecting plate is penetrated with two limit grooves one, and the two limit grooves one are respectively movably clamped with the two limit blocks.

[0013] Preferably, two pairs of limit grooves 2 are provided on the left surface of the plug, and the two pairs of limit grooves 2 are respectively movably connected with the two pairs of limit blocks, and the two sliders are both movably connected with the connecting blocks, and two pairs of card slots 1 are provided on the inner wall of the plug, and the two pairs of card slots 1 are respectively movably connected with the two pairs of pins.

[0014] Preferably, the two pairs of the annular sides of the sleeves are respectively movably sleeved with two connecting tubes, the two connecting tubes are fixedly connected to the inner wall of the protective shell, the front and rear sides of the connecting shell one and the connecting shell two are fixedly connected with a group of heat dissipation fins, and the two pairs of the pins are movably clamped with the connecting blocks.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the two rearmost pins of the two pairs of pins will be snapped into one of the two slots provided on the inner wall of the plug, and the other two pins will be located in the middle of the plug, waiting to be connected to the electronic thermostat socket. When a push rod fails, the pins can be quickly switched to connect to the other push rod, thereby ensuring that the basic functions of the electronic thermostat are not affected, maintaining the normal operation of the cooling system, reducing the risk of overheating or overcooling of the engine due to thermostat failure, and improving the reliability and stability of the entire system.

[0016] In the present invention, by pressing the two sliders to move to the left, the fixed blocks fixed thereto will be driven to move together, and the two fixed blocks move in the card slot three to compress the two cylindrical coil springs. At this time, the limit blocks fixed on the two sliders will also move accordingly. At this time, the two limit blocks will be disengaged from the card slot two opened on the plug, and the limit is opened, so that the plug can move. The two limit blocks are reset by the elastic force of the cylindrical coil springs to limit the plug. The overall operation of replacing the pin is relatively simple, does not require complicated tools and professional skills, and can be completed in a relatively short time.

[0017] In the present invention, a group of heat dissipation fins are fixedly connected to the surfaces of the connecting shell one and the connecting shell two. The heat dissipation fins can increase the heat dissipation area and accelerate the transfer of heat to the surrounding environment. The two pairs of pins are fixed by connecting blocks to ensure stability during use. The connection limit of the connecting shell one and the connecting shell two is used to limit and protect the internal components, so that they will not be easily moved due to external vibrations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the connection shell structure of the present invention; Figure 3 This is a schematic diagram of the structural protective shell of the present invention; Figure 4 It is a schematic diagram of the connection block structure of the present invention; Figure 5 It is a schematic diagram of the plug structure of the present invention; Figure 6 It is a schematic diagram of the structure of the connecting plate of the present invention; Figure 7 It is a schematic diagram of the structure of the slider of the present invention; Figure 8 It is a schematic diagram of the structure of the fixing block of the present invention.

[0019] In the figure, the correspondence between the structure names and the figure numbers is: 1. Protective shell; 2. Connecting shell one; 3. Connecting shell two; 4. Connecting block; 5. Plug; 6. Connecting plate; 7. Heat sink fin; 8. Connecting pipe; 9. Sleeve; 10. Core; 11. Heating element; 12. Pin; 13. Slot one; 14. Slider; 15. Slot two; 16. Limiting slot one; 17. Limiting slot two; 18. T-block; 19. Limiting block; 20. Slot three; 21. Fixing block; 22. Cylindrical coil spring. DETAILED DESCRIPTION

[0020] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] See also Figure 1 - Figure 8 The present invention provides an electric heating push rod for an electronic thermostat, including an electric heating push rod body, the electric heating push rod body including a protective shell 1, a plug 5, two heating elements 11, two pairs of core bodies 10 and two pairs of pins 12, the upper surface of the protective shell 1 is fixedly connected with a connecting shell 1 2, the upper surface of the connecting shell 1 2 is fixedly connected with a connecting shell 2 3, the right surface of the connecting shell 2 3 is fixedly connected with a connecting block 4, the right end of the connecting block 4 is fixedly connected with a connecting plate 6, the two pairs of core bodies 10 are respectively fixedly connected with the two heating elements 11 and the two pairs of pins 12, the annular side surfaces of the two pairs of core bodies 10 are movably sleeved with sleeves 9, the left surface of the plug 5 is fixedly connected with two T-blocks 18, the upper and lower sides of the connecting block 4 are provided with card slots 3 20, and the two card slots 3 20 are provided inside. The two fixing blocks 21 are movably connected, and the back sides of the two fixing blocks 21 are fixedly connected with sliders 14, and the back sides of the two sliders 14 are fixedly connected with limiting blocks 19. Two card slots 15 are provided on the right surface of the connecting plate 6, and the two card slots 15 are movably connected with two T-blocks 18 respectively. The inside of the protective shell 1 is filled with temperature-sensitive substances, such as paraffin. When the heating element 11 is energized, heat is generated, and the internal paraffin is heated and melted. The paraffin changes from solid to liquid, and its volume expands. Since the internal space of the protective shell 1 is limited, the expansion of the paraffin volume will generate an axial thrust on the protective shell 1, thereby stretching it, pushing the thermostat valve and other components connected thereto, and realizing the opening or closing action of the thermostat.

[0022] The left surfaces of the two fixing blocks 21 are fixedly connected with cylindrical coil springs 22, and the two cylindrical coil springs 22 are fixedly connected with the two card slots 3 20 respectively. Two limit grooves 16 are penetrated on the left surface of the connecting plate 6, and the two limit grooves 16 are movably connected with the two limit blocks 19 respectively. The electric heating push rod is connected with the electronic thermostat through the pin 12 provided in the plug 5. During its operation, when one of the push rods fails to work normally, by pressing the two sliders 14 to move to the left, the fixed blocks 21 fixed thereto will be driven to move together. The two fixed blocks 21 move in the card slots 3 20 to compress the two cylindrical coil springs 22. At this time, the limit blocks 19 fixed on the two sliders 14 also move accordingly. At this time, the two limit blocks 19 will be separated from the plug 5 is engaged with the two limit grooves 17 opened on the inner wall of the plug 5, the limit is opened, and the plug 5 can be moved. The plug 5 is movably connected to the connecting plate 6 through the two T-blocks 18 fixed thereon. At this time, the plug 5 is moved forward to the top. At this time, the two rearmost pins 12 of the two pairs of pins 12 will be engaged with the two card grooves 13 opened on the inner wall of the plug 5, and the other two pins 12 will be located in the middle position of the plug 5, waiting to be connected to the electronic thermostat socket. When a push rod fails, the pin 12 can be quickly switched to connect with the other push rod, ensuring that the basic function of the electronic thermostat is not affected, maintaining the normal operation of the cooling system, reducing the risk of overheating or overcooling of the engine due to thermostat failure, and improving the reliability and stability of the entire system.

[0023] The left surface of the plug 5 is provided with two pairs of limit grooves 17, which are respectively connected with two pairs of limit blocks 19, and the two sliders 14 are connected with the connection block 4. The inner wall of the plug 5 is provided with two pairs of card slots 13, which are respectively connected with two pairs of pins 12, and the two pairs of sleeves 9 are respectively connected with two connecting tubes 8 on the annular side. The two connecting tubes 8 are fixedly connected with the inner wall of the protective shell 1. The front and rear sides of the connecting shell 1 2 and the connecting shell 2 3 are fixedly connected with a group of heat dissipation fins 7. The two pairs of pins 12 are connected with the connection block 4. The two limit blocks 19 are connected with the cylindrical spiral The elastic force of the spring 22 is used to reset the plug 5 to limit the position. The operation of replacing the pin 12 as a whole is relatively simple and does not require complicated tools and professional skills. It can be completed in a relatively short time. A group of heat dissipation fins 7 are fixedly connected to the surface of the connecting shell 1 2 and the connecting shell 2 3. The heat dissipation fins 7 can increase the heat dissipation area and accelerate the transfer of heat to the surrounding environment. The two pairs of pins 12 are fixed by the connecting block 4 to ensure stability during use, and the connection limit of the connecting shell 1 2 and the connecting shell 2 3 is used to limit the internal components and protect them, so that they will not be easily moved due to external vibrations.

[0024] Working principle: In the first step, the protective shell 1 is filled with temperature-sensitive substances, such as paraffin. When the heating element 11 is energized, heat is generated, so that the internal paraffin is heated and melted, and the paraffin changes from solid to liquid, and its volume expands. Since the internal space of the protective shell 1 is limited, the expansion of the paraffin volume will generate an axial thrust on the protective shell 1, thereby stretching it and pushing the thermostat valve and other components connected thereto to realize the opening or closing action of the thermostat. The electric heating push rod is connected to the electronic thermostat through the pin 12 set in the plug 5. During its operation, when one of the push rods fails to work normally, by pressing the two sliders 14 to move to the left, the fixed block 21 fixed thereto will be driven to move together. The two fixed blocks 21 move in the slot three 20 to compress the two cylindrical coil springs 22. At this time, the limiter fixed on the two sliders 14 The positioning block 19 will also move accordingly. At this time, the two limit blocks 19 will be disengaged from the two limit grooves 17 opened on the plug 5, and the limit will be opened. The plug 5 can move. The plug 5 is movably connected to the connecting plate 6 through the two T-blocks 18 fixed thereon. At this time, the plug 5 is moved forward to the top. At this time, the two rearmost pins 12 of the two pairs of pins 12 will be engaged in the two card grooves 13 opened on the inner wall of the plug 5, and the other two pins 12 will be located in the middle position of the plug 5, waiting to be connected to the electronic thermostat socket. When a push rod fails, the pin 12 can be quickly switched to connect with the other push rod, ensuring that the basic function of the electronic thermostat is not affected, maintaining the normal operation of the cooling system, reducing the risk of overheating or overcooling of the engine due to thermostat failure, and improving the reliability and stability of the entire system.

[0025] In the second step, the two limit blocks 19 are reset by the elastic force of the cylindrical coil spring 22 to limit the plug 5. The operation of replacing the pins 12 as a whole is relatively simple and does not require complicated tools and professional skills. It can be completed in a relatively short time. A group of heat dissipation fins 7 are fixedly connected to the surface of the connecting shell 1 2 and the connecting shell 2 3. The heat dissipation fins 7 can increase the heat dissipation area and accelerate the transfer of heat to the surrounding environment. The two pairs of pins 12 are fixed by the connecting block 4 to ensure stability during use, and the connection limit of the connecting shell 1 2 and the connecting shell 2 3 is used to limit the internal components and protect them, so that they will not be easily moved due to external vibrations.

[0026] The examples of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and to design various embodiments with various modifications suitable for specific uses.

Claims

1. An electric heating push rod for an electronic thermostat, comprising an electric heating push rod body, wherein the electric heating push rod body comprises a protective shell (1), a plug (5), two heating elements (11), two pairs of cores (10) and two pairs of pins (12); the characteristics are: The upper surface of the protective shell (1) is fixedly connected to a connecting shell 1 (2), the upper surface of the connecting shell 1 (2) is fixedly connected to a connecting shell 2 (3), the right surface of the connecting shell 2 (3) is fixedly connected to a connecting block (4), the right end of the connecting block (4) is fixedly connected to a connecting plate (6), and the two pairs of core bodies (10) are respectively fixedly connected to the two heating elements (11) and the two pairs of pins (12); The two pairs of core bodies (10) are both movably sleeved with sleeves (9) on their annular side surfaces, the left surface of the plug (5) is fixedly connected with two T-shaped blocks (18), the upper and lower sides of the connection block (4) are both provided with three card slots (20), the two card slots (20) are both movably sleeved with fixed blocks (21), the back surfaces of the two fixed blocks (21) are both fixedly connected with sliders (14), and the back surfaces of the two sliders (14) are both fixedly connected with limit blocks (19).

2. An electric heating push rod for an electronic thermostat as claimed in claim 1, characterized in that: The right surface of the connecting plate (6) is provided with two second card slots (15); The two second clamping slots (15) are respectively movably clamped with the two T-shaped blocks (18).

3. The electric heating push rod for an electronic thermostat according to claim 1, characterized in that: The left surfaces of the two fixing blocks (21) are both fixedly connected with cylindrical coil springs (22); Wherein, the two cylindrical helical springs (22) are respectively fixedly connected to the two third clamping slots (20).

4. The electric heating push rod for an electronic thermostat according to claim 1, characterized in that: The left surface of the connecting plate (6) is provided with two limiting grooves (16) extending therethrough; The two limiting grooves (16) are respectively movably engaged with the two limiting blocks (19).

5. The electric heating push rod for an electronic thermostat according to claim 1, characterized in that: The left surface of the plug (5) is provided with two pairs of limiting grooves (17); The two pairs of limit grooves (17) are respectively movably engaged with the two pairs of limit blocks (19).

6. The electric heating push rod for an electronic thermostat according to claim 1, characterized in that: The two sliding blocks (14) are both movably engaged with the connecting block (4).

7. The electric heating push rod for an electronic thermostat according to claim 1, characterized in that: The inner wall of the plug (5) is provided with two pairs of slots (13); The two pairs of the first card slots (13) are respectively movably connected to the two pairs of pins (12).

8. The electric heating push rod for an electronic thermostat according to claim 1, characterized in that: The two pairs of sleeves (9) are respectively movably sleeved with two connecting pipes (8) on their annular sides; Wherein, the two connecting pipes (8) are both fixedly connected to the inner wall of the protective shell (1).

9. The electric heating push rod for an electronic thermostat according to claim 1, characterized in that: A group of heat dissipation fins (7) are fixedly connected to the front and rear sides of the connection shell 1 (2) and the connection shell 2 (3).

10. The electric heating push rod for an electronic thermostat according to claim 1, characterized in that: The two pairs of pins (12) are movably engaged with the connection block (4).

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