Sealing structure of carburetor

Abstract

The utility model discloses a sealing structure of a carburetor, which comprises a carburetor main body and a machine cover, and the carburetor main body is detachably connected with the machine cover. A first connecting plate is arranged at the connecting position of the carburetor body, a second connecting plate matched with the first connecting plate is arranged on the machine cover, after the machine cover is close to the carburetor body, the second connecting plate and the first connecting plate are connected in a matched and clamped mode, the second connecting plate and the first connecting plate are connected in a limiting mode through a positioning mechanism, and a sealing mechanism is further arranged between the first connecting plate and the second connecting plate. And the sealing mechanism is used for improving the connection tightness. Compared with the prior art, the sealing mechanism has the advantages that the sealing mechanism forms a double-sealing defensive line, so that the air tightness and the liquid tightness of a connector are improved; the second connecting plate and the first connecting plate are connected in a matched and clamped mode, guiding and limiting functions are provided for the second connecting plate, it is ensured that installation and alignment are accurate, certain limiting supporting can be conducted on the machine cover, and the falling risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of carburetor technology, specifically to a sealing structure for a carburetor. Background Technology

[0002] The carburetor is a key component in traditional internal combustion engines used to mix air and fuel in a certain proportion. Its sealing performance directly affects the engine's operating stability, fuel economy, and emissions performance.

[0003] In existing technologies, the connection between the carburetor and the engine cover is mostly achieved using a simple bolt fastening structure, with rubber gaskets for sealing. However, relying solely on a single rubber gasket for sealing is prone to failure due to aging, compression deformation, or improper installation during long-term use. Under high temperature, high pressure, or vibration environments, the sealing effect further deteriorates, leading to fuel or air-fuel mixture leakage and affecting the normal operation of the engine. Furthermore, the bolt fastening method lacks an effective positioning and limiting structure, making it easy for the engine cover and carburetor body to shift or misalign. During long-term operation, mechanical vibration may cause the connecting parts to loosen or even fall off.

[0004] This necessitates a new type of carburetor sealing structure. Utility Model Content

[0005] The technical problem to be solved by this utility model is poor sealing effect and easy to fall off by bolt fastening. It provides a new sealing structure for carburetors.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a sealing structure for a carburetor, including a carburetor body and a cover, wherein the carburetor body and the cover are detachably connected;

[0007] A connecting plate 1 is provided at the connection point of the carburetor body, and a connecting plate 2 that is adapted to the connecting plate 1 is provided on the engine cover. After the engine cover is close to the carburetor body, the connecting plate 2 and the connecting plate 1 are fitted and snapped together, and the connecting plate 2 and the connecting plate 1 are limited and connected by a positioning mechanism. A sealing mechanism is also provided between the connecting plate 1 and the connecting plate 2 to improve the tightness of the connection.

[0008] As an improvement, the sealing mechanism includes a rubber sealing gasket. The rubber sealing gasket is glued to the top surface of the second connecting plate. When the second connecting plate is placed close to the first connecting plate, the rubber sealing gasket is in close contact with the inner ring of the first connecting plate.

[0009] As an improvement, an annular groove is provided on the bottom surface of the connecting plate one, and a sealing ring is glued in the annular groove. When the connecting plate two is placed close to the connecting plate one, the sealing ring is in close contact with the outer ring of the rubber sealing gasket.

[0010] As an improvement, a pair of L-shaped plates are provided on the bottom surface of the connecting plate one, and the connecting plate two is pushed between the two L-shaped plates and then closely adheres to the bottom surface of the connecting plate one.

[0011] As an improvement, both L-shaped plates are equipped with T-shaped sealing strips. When the second connecting plate is placed between the two L-shaped plates, the T-shaped sealing strips are inserted into the pre-set T-shaped sealing grooves on the second connecting plate.

[0012] As an improvement, the positioning mechanism includes a connecting hole, a positioning screw, and a nut;

[0013] Multiple sets of connection holes are provided on connecting plate one and connecting plate two. After each positioning screw passes through each set of connection holes, it is tightened by a nut.

[0014] As an improvement, each positioning screw is connected to a pull ring located above the connecting plate, and each pull ring is connected to a return spring located around the positioning screw.

[0015] The advantages of this utility model compared with the prior art are as follows:

[0016] 1. The rubber sealing gasket and sealing ring form a double sealing barrier, improving the airtightness and liquid tightness at the interface;

[0017] 2. The L-shaped plate and T-shaped sealing strip design provide guidance and limiting functions for the connecting plate 2, ensuring accurate installation alignment, and can also provide certain limiting support for the cover to reduce the risk of falling off;

[0018] 3. The positioning screw and return spring structure enable quick assembly and disassembly while maintaining a stable connection and preventing loosening. Attached Figure Description

[0019] Figure 1 This is a perspective view of the sealing structure of a carburetor according to this utility model.

[0020] Figure 2 This is a perspective view of the main body of a carburetor, which is a sealing structure of a carburetor according to this utility model.

[0021] Figure 3 This is a perspective view of the cover of a carburetor's sealing structure according to this utility model.

[0022] Figure 4 This is a first schematic diagram of the connecting plate of the sealing structure of a carburetor according to this utility model.

[0023] Figure 5 This is a second schematic diagram of the connecting plate of the sealing structure of a carburetor according to this utility model.

[0024] Figure 6 This is a schematic diagram of the positioning screw of a carburetor sealing structure according to this utility model.

[0025] As shown in the figure: 1. Carburetor body; 2. Engine cover; 3. Connecting plate one; 4. Connecting plate two; 5. Rubber sealing gasket; 6. Annular groove; 7. Sealing ring; 8. L-shaped plate; 9. T-shaped sealing strip; 10. T-shaped sealing groove; 11. Connecting hole; 12. Positioning screw; 13. Nut; 14. Pull ring; 15. Return spring. Detailed Implementation

[0026] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] Example 1

[0029] A carburetor sealing structure, combined with an attached Figure 1-3 As shown in Figure 6, the device includes a carburetor body 1 and a cover 2, which are detachably connected. A connecting plate 3 is provided at the connection point of the carburetor body 1, and a connecting plate 4 adapted to the connecting plate 3 is provided on the cover 2. After the cover 2 approaches the carburetor body 1, the connecting plate 4 is adapted to and snapped into the connecting plate 3, and the connecting plate 4 and the connecting plate 3 are limited by a positioning mechanism. A pair of L-shaped plates 8 are provided on the bottom surface of the connecting plate 3. After the connecting plate 4 is pushed between the two L-shaped plates 8, it is close to the bottom surface of the connecting plate 3. A T-shaped sealing strip 9 is provided on both L-shaped plates 8. When the connecting plate 4 is placed between the two L-shaped plates 8, the T-shaped sealing strip 9 is snapped into the T-shaped sealing groove 10 preset on the connecting plate 4.

[0030] Bring the engine cover 2 close to the carburetor body 1, align the connecting plate 2 4 with the space between the two L-shaped plates 8, push the connecting plate 2 4 into the space between the L-shaped plates 8, so that its bottom surface is in close contact with the bottom surface of the connecting plate 1 3, the T-shaped sealing strip 9 automatically snaps into the T-shaped sealing groove 10 on the connecting plate 2 4, the rubber sealing gasket 5 contacts the inner ring of the connecting plate 1 3, and the sealing ring 7 is embedded in the annular groove 6 and fits the outer ring.

[0031] The positioning mechanism includes a connecting hole 11, a positioning screw 12, and a nut 13. Multiple sets of connecting holes 11 are provided on the connecting plate 3 and the connecting plate 4. Each positioning screw 12 passes through each set of connecting holes 11 and is then fastened by the nut 13. Each positioning screw 12 is connected to a pull ring 14 located above the connecting plate 3 at its top end. Each pull ring 14 is connected to a return spring 15 located around the positioning screw 12 between it and the top surface of the connecting plate 3. When the positioning screw 12 is released, it passes through the corresponding connecting holes 11 on the connecting plate 3 and the connecting plate 4 in sequence under the action of the return spring 15, and is then fastened from below by the nut 13.

[0032] Example 2

[0033] Based on Example 1, combined with Appendix Figure 4-5 As shown, a sealing mechanism is also provided between connecting plate 3 and connecting plate 4. The sealing mechanism is used to improve the tightness of the connection. The sealing mechanism includes a rubber sealing gasket 5. The rubber sealing gasket 5 is glued to the top surface of connecting plate 4. When connecting plate 4 is placed close to connecting plate 3, the rubber sealing gasket 5 is close to the inner ring of connecting plate 3. An annular groove 6 is opened on the bottom surface of connecting plate 3. A sealing ring 7 is glued to the annular groove 6. When connecting plate 4 is placed close to connecting plate 3, the sealing ring 7 is close to the outer ring of rubber sealing gasket 5.

[0034] In a specific implementation of this utility model, the engine cover 2 is brought close to the carburetor body 1, so that the connecting plate 2 4 is aligned with the space between the two L-shaped plates 8, and the connecting plate 2 4 is pushed into the space between the L-shaped plates 8 so that its bottom surface is tightly attached to the bottom surface of the connecting plate 1 3. The T-shaped sealing strip 9 is automatically inserted into the T-shaped sealing groove 10 on the connecting plate 2 4, the rubber sealing gasket 5 contacts the inner ring of the connecting plate 1 3, and the sealing ring 7 is embedded in the annular groove 6 and fits the outer ring.

[0035] Release each positioning screw 12 so that it passes through the corresponding connecting hole 11 on the connecting plate 3 and the connecting plate 4 in sequence under the action of the return spring 15. Use the nut 13 to tighten from below to ensure a firm connection but not to overtighten in order to protect the sealing structure.

[0036] During operation, the double-layer sealing structure continues to function to prevent leakage of mixed gas. The T-shaped sealing strip 9 effectively prevents external dust and impurities from entering the internal cavity. When disassembly is required, loosen the nut 13 and pull the positioning screw 12 to move it upward. At this time, the connecting plate 2 4 can be easily pulled out from between the L-shaped plates 8. Clean the connecting plate 1 3, connecting plate 2 4 and the surface of the sealing structure. If the rubber sealing gasket 5 or sealing ring 7 is found to be aged, it should be replaced with new parts in time.

[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A sealing structure for a carburetor, characterized in that: It includes a carburetor body (1) and a cover (2), and the carburetor body (1) and the cover (2) are detachably connected; A connecting plate 1 (3) is provided at the connection of the carburetor body (1), and a connecting plate 2 (4) adapted to the connecting plate 1 (3) is provided on the cover (2). After the cover (2) approaches the carburetor body (1), the connecting plate 2 (4) is fitted and snapped into the connecting plate 1 (3), and the connecting plate 2 (4) and the connecting plate 1 (3) are connected by a positioning mechanism. A sealing mechanism is also provided between the connecting plate 1 (3) and the connecting plate 2 (4) to improve the tightness of the connection.

2. The sealing structure of a carburetor according to claim 1, characterized in that: The sealing mechanism includes a rubber sealing gasket (5). A rubber sealing gasket (5) is glued to the top surface of the connecting plate two (4). When the connecting plate two (4) is placed close to the connecting plate one (3), the rubber sealing gasket (5) is close to the inner ring of the connecting plate one (3).

3. The sealing structure of a carburetor according to claim 2, characterized in that: The bottom surface of the connecting plate 1 (3) has an annular groove (6), and a sealing ring (7) is glued in the annular groove (6). When the connecting plate 2 (4) is placed close to the connecting plate 1 (3), the sealing ring (7) is close to the outer ring of the rubber sealing gasket (5).

4. The sealing structure of a carburetor according to claim 1, characterized in that: A pair of L-shaped plates (8) are provided on the bottom surface of the connecting plate 1 (3). After the connecting plate 2 (4) is pushed between the two L-shaped plates (8), it is closely attached to the bottom surface of the connecting plate 1 (3).

5. The sealing structure of a carburetor according to claim 4, characterized in that: Both L-shaped plates (8) are provided with T-shaped sealing strips (9). When the connecting plate 2 (4) is placed between the two L-shaped plates (8), the T-shaped sealing strips (9) are inserted into the T-shaped sealing grooves (10) preset on the connecting plate 2 (4).

6. The sealing structure of a carburetor according to claim 4, characterized in that: The positioning mechanism includes a connecting hole (11), a positioning screw (12), and a nut (13); Multiple sets of connecting holes (11) are provided on connecting plate 1 (3) and connecting plate 2 (4). After each positioning screw (12) passes through each set of connecting holes (11), it is fastened by a nut (13).

7. The sealing structure of a carburetor according to claim 6, characterized in that: Each positioning screw (12) is connected to a pull ring (14) located above the connecting plate (3) at its top end. Each pull ring (14) is connected to a return spring (15) located around the positioning screw (12) between it and the top surface of the connecting plate (3).

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