Inner leakage prevention structure of electronic thermostat

Abstract

The utility model relates to an inner leakage prevention structure of an electronic thermostat, which comprises a thermostat shell, a thermostat inlet is arranged on the thermostat shell, thermostat outlet pipes are mounted on two sides of the thermostat inlet, the thermostat inlet is communicated with the thermostat outlet pipes, a valve core is rotatably mounted in the thermostat shell, and a valve rod is mounted in the valve core. A sealing structure is arranged between the valve element and the thermostat shell and between the valve element and the thermostat outlet pipe and comprises a sealing gasket, a spring, a rubber gasket base and a sealing ring, the spring is installed in the thermostat outlet pipe, and the sealing gasket and the rubber gasket base are installed in the thermostat shell. A through-flow notch is formed in the valve element, and the inner wall of the thermostat outlet pipe, the spring, the rubber pad base, the sealing pad and the valve element abut against one another in sequence. A compression fit mode of the rubber pad and the valve core is adopted, and a sealing structure at the bottom of the rubber pad can provide an enough interference sealing surface to prevent internal leakage of the thermostat. The sealing gasket is made of rubber, is low in hardness and is attached along with the shape change of the sealing surface after being pressed, and the structure is good in weather resistance.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessories and relates to an anti-internal leakage structure of an electronic thermostat. Background Art

[0002] The thermostat is a valve that controls the flow path of coolant and is an important accessory in a car.

[0003] Existing thermostats have the following issues: 1. The valve core and the integrated seal require additional machining of the valve core's exterior, which is then machined to fit the seal. 2. Processing costs are high, and the components can deform due to internal stress release, leading to a loose fit and exacerbated leakage. 3. The rubber pad and base are poorly bonded, causing the vehicle's hydrothermal management system to heat up too slowly during cold starts. Summary of the Invention

[0004] The purpose of the utility model is to provide an electronic thermostat anti-internal leakage structure, which can solve the above-mentioned problems and has good weather resistance.

[0005] According to the technical solution provided by the utility model: an electronic thermostat anti-internal leakage structure, including a thermostat housing, a thermostat inlet is provided on the thermostat housing, thermostat outlet pipes are installed on both sides of the thermostat inlet, the thermostat inlet is connected to the thermostat outlet pipe, a valve core is rotatably installed in the thermostat housing, a sealing structure is provided between the valve core and the thermostat housing and the thermostat outlet pipe, the sealing structure includes a sealing gasket, a spring, a rubber pad base, and a sealing ring, the spring is installed in the thermostat outlet pipe, and the sealing gasket and the rubber pad base are installed in the thermostat housing; a flow notch is provided on the valve core, and the inner wall of the thermostat outlet pipe, the spring, the rubber pad base, the sealing gasket, and the valve core are offset in sequence.

[0006] As a further improvement of the present invention, the rubber pad base and the outer periphery of the sealing pad are rectangular.

[0007] As a further improvement of the present invention, flow holes are respectively opened in the middle of the rubber pad base and the sealing pad, and an anti-rotation structure and a second sealing structure are provided between the rubber pad base and the sealing pad; the anti-rotation structure includes a positioning column and a positioning notch, the positioning columns are located on both sides of the flow hole on the rubber pad base, the positioning notch is located on the sealing pad, and the positioning columns are located in the positioning notch.

[0008] As a further improvement of the present invention, the second sealing structure includes a waterstop line and a waterstop line groove. The waterstop line is located on the periphery of the flow hole on the rubber pad base, and the waterstop line groove is located on the periphery of the flow hole on the sealing gasket. The cross-section of the waterstop line groove is slightly smaller than the waterstop line cross-section; under the action of the spring, the waterstop line is interference-embedded in the waterstop line groove.

[0009] As a further improvement of the present invention, the water stop line is an annular boss structure.

[0010] As a further improvement of the present invention, a baffle is provided on the rubber pad base and is installed on the inlet side of the thermostat.

[0011] As a further improvement of the present invention, a friction-reducing pad is attached to the inner surface of the sealing gasket.

[0012] As a further improvement of the present invention, the friction-reducing pad is made of PTFE material.

[0013] The positive progress of this application is:

[0014] This utility model utilizes a compression fit between the sealing gasket and the valve core. The sealing structure at the bottom of the rubber gasket provides a sufficient interference fit to prevent internal leakage within the thermostat. The gasket is made of low-hardness rubber and conforms to the shape of the sealing surface under pressure. This structure is simple to assemble and offers excellent weather resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] Figure 2 It is a structural schematic diagram of the connection between the sealing pad and the rubber pad base in the utility model.

[0017] Figure 3 This is a cross-sectional view of the connection between the sealing pad and the rubber pad base in the utility model.

[0018] Figure 4 It is a structural schematic diagram of the rubber pad base in the utility model.

[0019] Figure 1-Figure 4 It includes a thermostat inlet 1, a valve core 2, a thermostat first outlet pipe 3, a thermostat outlet pipe 4, a sealing gasket 5, a spring 6, a rubber pad base 7, a sealing ring 8, a friction-reducing pad 9, a positioning column 10, a waterstop groove 11, a waterstop 12, etc. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate for the embodiments of the present invention described herein. In addition, similar terms such as "including" and "having" mean that in addition to those contents already listed in "including" and "having", other contents that have not been listed may also be "included" and "having"; for example, a process, method, system, product or device that may include a series of steps or units is not necessarily limited to those steps or units that have been clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0023] Due to the angle of the drawing, some components may not be drawn, but their positions and connection relationships can be partially understood based on the text.

[0024] like Figure 1 As shown, the utility model is an electronic thermostat anti-internal leakage structure, including a thermostat housing 3, a thermostat inlet 1 is provided on the thermostat housing 3, thermostat outlet pipes 4 are installed on both sides of the thermostat inlet 1, the thermostat inlet 1 is connected to the thermostat outlet pipe 4, a valve core 2 is rotatably installed in the thermostat housing 3, and a sealing structure is provided between the valve core 2 and the thermostat housing 3 and the thermostat outlet pipe 4.

[0025] The sealing structure includes a sealing gasket 5, a spring 6, a rubber pad base 7, and a sealing ring 8. The spring 6 is installed in the thermostat outlet pipe 4, and the sealing gasket 5 and rubber pad base 7 are installed in the thermostat housing 3. The valve core 2 is provided with a flow-through notch 2-1. The inner wall of the thermostat outlet pipe 4, the spring 6, the rubber pad base 7, the sealing gasket 5, and the valve core 2 are mutually abutted in this order.

[0026] like Figure 2 As shown, the outer periphery of the rubber pad base 7 and the sealing pad 5 is rectangular, with a flow hole in the middle. An anti-rotation structure and a second sealing structure are provided between the rubber pad base 7 and the sealing pad 5. Figure 4 As shown, the anti-rotation structure includes a positioning column 10 and a positioning notch. The positioning column 10 is located on both sides of the flow hole on the rubber pad base 7, and the positioning notch is located on the sealing pad 5. The positioning column 10 is located in the positioning notch, so that the rubber pad base 7 and the rubber pad 5 rotate synchronously in the circumferential direction. The second sealing structure includes a waterstop 12 and a waterstop groove 11. The waterstop 12 is located on the outer periphery of the flow hole on the rubber pad base 7, and the waterstop groove 11 is located on the outer periphery of the flow hole on the sealing pad 5. The cross-section of the waterstop groove 11 is slightly smaller than the cross-section of the waterstop 12. Under the action of the spring 6, the waterstop 12 is interference-fitted into the waterstop groove 11, forming a compression deformation, which plays a sealing role. The waterstop 12 is an annular boss structure.

[0027] The rubber pad base 7 allows the elastic force of the spring 6 to act evenly on the sealing pad 5, thereby improving the sealing effect of the sealing pad 5. At the same time, friction between the spring 6 and the sealing pad 5 is avoided, thereby increasing the service life of the sealing pad 5.

[0028] A baffle 13 is provided on the rubber pad base 7 and is installed on the side of the thermostat inlet 1 to prevent water from flowing past the edge of the sealing pad 5 and blocking the valve core 2.

[0029] like Figure 3 As shown, a friction reducing pad 9 is attached to the inner surface of the sealing pad 5 to reduce the friction between the valve core 2 and the sealing pad 5. The friction reducing pad 9 is made of PTFE.

[0030] The working process of this utility model is as follows:

[0031] The medium passes through the thermostat inlet 1, changes direction after passing through the valve core 2, and flows to the thermostat outlet pipe 4 on one side. On the other side, the rubber gasket 5, pushed by the spring 6, fits tightly against the valve core 2, forming a primary seal. The sealing gasket 5 fits against the rubber gasket base 7, forming a secondary seal. A sealing ring 8 is installed on the tail end of the rubber gasket base 7. Located between the thermostat inlet 1 and the thermostat outlet pipe 4, the sealing ring 8 forms a third seal, preventing the medium from leaking outward through the gap between the thermostat inlet 1 and the thermostat outlet pipe 4.

[0032] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An electronic thermostat anti-internal leakage structure, comprising a thermostat housing (3), a thermostat inlet (1) provided on the thermostat housing (3), thermostat outlet pipes (4) installed on both sides of the thermostat inlet (1), the thermostat inlet (1) and the thermostat outlet pipe (4) being connected, a valve core (2) rotatably installed in the thermostat housing (3), a sealing structure provided between the valve core (2) and the thermostat housing (3) and the thermostat outlet pipe (4), characterized in that: The sealing structure comprises a sealing gasket (5), a spring (6), a rubber gasket base (7), and a sealing ring (8). The spring (6) is installed in the thermostat outlet pipe (4), and the sealing gasket (5) and the rubber gasket base (7) are installed in the thermostat housing (3). A flow notch (2-1) is provided on the valve core (2), and the inner wall of the thermostat outlet pipe (4), the spring (6), the rubber gasket base (7), the sealing gasket (5), and the valve core (2) are abutted against each other in sequence.

2. The electronic thermostat anti-internal leakage structure according to claim 1, characterized in that: The outer periphery of the rubber pad base (7) and the sealing pad (5) is rectangular.

3. The electronic thermostat anti-internal leakage structure according to claim 1, characterized in that: A flow hole is respectively provided in the middle of the rubber pad base (7) and the sealing pad (5), and an anti-rotation structure and a second sealing structure are provided between the rubber pad base (7) and the sealing pad (5); the anti-rotation structure includes a positioning column (10) and a positioning notch, the positioning column (10) being located on both sides of the flow hole on the rubber pad base (7), the positioning notch being located on the sealing pad (5), and the positioning column (10) being located in the positioning notch.

4. The electronic thermostat anti-internal leakage structure according to claim 3, characterized in that: The second sealing structure includes a waterstop line (12) and a waterstop line groove (11), wherein the waterstop line (12) is located on the periphery of the flow hole on the rubber pad base (7), and the waterstop line groove (11) is located on the periphery of the flow hole on the sealing pad (5), and the cross section of the waterstop line groove (11) is slightly smaller than the cross section of the waterstop line (12); under the action of the spring (6), the waterstop line (12) is interference fit in the waterstop line groove (11).

5. The electronic thermostat anti-internal leakage structure according to claim 3, characterized in that: The water stop line (12) is an annular boss structure.

6. The electronic thermostat anti-internal leakage structure according to claim 1, characterized in that: A baffle (13) is provided on the rubber pad base (7) and is installed on the side of the thermostat inlet (1).

7. The electronic thermostat anti-internal leakage structure according to claim 1, characterized in that: A friction reducing pad (9) is attached to the inner surface of the sealing pad (5).

8. The electronic thermostat anti-internal leakage structure according to claim 7, characterized in that: The friction reducing pad (9) is made of PTFE material.

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