Flange sealing structure of automobile brake booster vacuum pump

Abstract

The utility model relates to an automobile brake booster vacuum pump flange sealing structure which comprises an automobile brake booster vacuum pump, an automobile brake booster vacuum pump flange is arranged at the end of the automobile brake booster vacuum pump, and a sealing ring is installed on the automobile brake booster vacuum pump flange. A first upper sealing boss and a second upper sealing boss are arranged at the top of the sealing ring, and a deformation upper avoiding cavity is reserved between the first upper sealing arc top and the second upper sealing arc top; a first lower sealing boss and a second lower sealing boss are arranged at the bottom of the sealing ring, and a deformation lower avoiding cavity is reserved between the first lower sealing boss and the second lower sealing boss. According to the utility model, the original circular sealing ring is designed into a groove-shaped sealing ring, so that the assembly efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive vacuum pump sealing technology, and relates to the flange sealing structure of automotive brake booster vacuum pump. Background Technology

[0002] The automotive brake booster vacuum pump is connected to the vacuum booster and is used to extract air from the vacuum booster, thereby improving the booster's assist effect. According to the working principle of the vacuum booster, the higher the vacuum level, the better the assist effect. When the driver presses the brake pedal, the booster increases the braking force based on the vacuum pressure, making the braking more sensitive and smooth.

[0003] Each vacuum pump is equipped with a flange sealing ring, installed in the sealing ring groove of its pump body. When the vacuum pump is installed in the engine block, it provides end-face sealing between the vacuum pump and the engine block. Its main function is to ensure the isolation between the inside and outside of the vacuum pump, preventing gas leakage and oil seepage from the end face, thereby ensuring the normal operation of the vacuum pump and a stable vacuum level. The sealing ring, through its sealing performance, prevents excessive pressure differences between the pump's internal pressure and the external environment, preventing gas leakage from the high-pressure area to the low-pressure area, thus protecting the normal operation of the vacuum pump and extending its service life.

[0004] The existing sealing rings are circular, requiring workers to manually adjust them according to the groove shape before installation, which is time-consuming and prone to falling off during transportation, causing customer complaints. Summary of the Invention

[0005] The purpose of this utility model is to provide a flange sealing structure for an automotive brake booster vacuum pump, which can solve the above-mentioned problems and enhance the sealing effect.

[0006] According to the technical solution provided by this utility model: a flange sealing structure for an automotive brake booster vacuum pump includes an automotive brake booster vacuum pump, the end of which is an automotive brake booster vacuum pump flange, and a sealing ring is installed on the automotive brake booster vacuum pump flange; the top of the sealing ring is provided with a first upper sealing boss and a second upper sealing boss, and a deformation upper relief cavity is left between the first upper sealing boss and the second upper sealing boss; the bottom of the sealing ring is provided with a first lower sealing boss and a second lower sealing boss, and a deformation lower relief cavity is left between the first lower sealing boss and the second lower sealing boss.

[0007] As a further improvement of this utility model, a sealing groove is provided on the flange of the automotive brake booster vacuum pump, and a sealing ring is located in the sealing groove.

[0008] As a further improvement of this utility model, the first upper sealing boss, the first lower sealing boss, the second upper sealing boss, and the second lower sealing boss are located in the same vertical direction.

[0009] As a further improvement of this utility model, mounting bosses are provided on both sides of the sealing ring at intervals, the cross-section of the sealing groove is rectangular, and the mounting bosses on both sides are interference fit with the side wall of the sealing groove.

[0010] As a further improvement of this utility model, the sealing ring is composed of an arc segment, a straight segment, and a broken line segment.

[0011] As a further improvement of this utility model, the two ends of the symmetrically arranged straight line segments are respectively connected to the arc segment and the broken line segment.

[0012] As a further improvement of this utility model, the intersection of the straight line segment and the arc segment or the broken line segment is transitioned with rounded corners.

[0013] As a further improvement of this utility model, the arc segment is semi-circular.

[0014] As a further improvement of this utility model, mounting bosses are provided on both sides of the middle part of the arc segment and the broken line segment, and four mounting bosses are symmetrically provided on the straight line segment on one side.

[0015] The positive and progressive effects of this application are as follows:

[0016] 1. This utility model redesigns the original circular sealing ring into a groove-shaped sealing ring, thereby improving assembly efficiency;

[0017] 2. This utility model changes the cross-section of the sealing ring from a circle to a double-peak shape, thereby enhancing the sealing effect;

[0018] 3. This utility model adds multiple mounting bosses to the side of the H-shaped sealing ring for installation and fixation, avoiding the risk of it falling off during transportation; thus eliminating the risk of the sealing ring falling off during transportation and customer complaints. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a cross-sectional schematic diagram of the sealing ring of this utility model.

[0021] Figure 3 This is a top view of the sealing ring of this utility model. Detailed Implementation

[0022] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein. Furthermore, terms such as "comprising" and "having" mean that in addition to those already listed in "comprising" and "having," other unlisted contents may also be included; for example, a process, method, system, product, or device may include a series of steps or units, not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0025] Due to the angle of the drawing, some parts may not be drawn, but their positions and connections can be understood from the text descriptions.

[0026] like Figure 1 As shown, this utility model is a flange sealing structure for an automotive brake booster vacuum pump, including an automotive brake booster vacuum pump 1, an automotive brake booster vacuum pump flange 1-1 at one end of the automotive brake booster vacuum pump 1, and a sealing ring 2 installed on the automotive brake booster vacuum pump flange 1-1.

[0027] The automotive brake booster vacuum pump flange 1-1 is provided with a sealing groove, and the sealing ring 2 is located in the sealing groove.

[0028] like Figure 2 As shown, the top of the sealing ring 2 is provided with a first upper sealing boss 2-1 and a second upper sealing boss 2-2, and a deformation upper relief cavity 2-3 is left between the first upper sealing boss 2-1 and the second upper sealing boss 2-2; the bottom of the sealing ring 2 is provided with a first lower sealing boss 2-4 and a second lower sealing boss 2-5, and a deformation lower relief cavity 2-6 is left between the first lower sealing boss 2-4 and the second lower sealing boss 2-5.

[0029] The first upper sealing boss 2-1 and the first lower sealing boss 2-4, as well as the second upper sealing boss 2-2 and the second lower sealing boss 2-5, are located in the same vertical direction, which helps to increase the support of the sealing ring.

[0030] To improve the installation firmness of the sealing ring 2, mounting bosses 2-10 are provided on both sides of the sealing ring 2 at intervals. The cross-section of the sealing groove is rectangular, and the mounting bosses 2-10 on both sides are interference fit with the side wall of the sealing groove.

[0031] like Figure 3 As shown, the sealing ring 2 is composed of an arc-shaped segment 2-7, a straight segment 2-8, and a broken line segment 2-9. The straight segment 2-8, arranged symmetrically, connects at both ends to the arc-shaped segment 2-7 and the broken line segment 2-9, respectively. The intersections of the straight segment 2-8 with the arc-shaped segment 2-7 and the broken line segment 2-9 are rounded. The arc-shaped segment 2-7 is semi-circular.

[0032] In this embodiment, mounting bosses 2-10 are provided on both sides of the middle of the arc segment 2-7 and the broken line segment 2-9, and four mounting bosses 2-10 are symmetrically provided on the straight line segment 2-8 on one side.

[0033] The shape of sealing ring 2 is adapted to the sealing groove. The shape of the sealing groove is designed to accommodate the connection surface between the automotive brake booster vacuum pump and the vacuum booster.

[0034] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A flange sealing structure for an automotive brake booster vacuum pump, characterized in that, The device includes an automotive brake booster vacuum pump (1), the end of which is an automotive brake booster vacuum pump flange (1-1), and a sealing ring (2) is installed on the automotive brake booster vacuum pump flange (1-1); the top of the sealing ring (2) is provided with a first upper sealing boss (2-1) and a second upper sealing boss (2-2), and a deformation upper relief cavity (2-3) is left between the first upper sealing arc top (2-1) and the second upper sealing arc top (2-2); the bottom of the sealing ring (2) is provided with a first lower sealing boss (2-4) and a second lower sealing boss (2-5), and a deformation lower relief cavity (2-6) is left between the first lower sealing boss (2-4) and the second lower sealing boss (2-5).

2. The automotive brake booster vacuum pump flange sealing structure as described in claim 1, characterized in that, The automotive brake booster vacuum pump flange (1-1) is provided with a sealing groove, and the sealing ring (2) is located in the sealing groove.

3. The automotive brake booster vacuum pump flange sealing structure as described in claim 1, characterized in that, The first upper sealing boss (2-1) and the first lower sealing boss (2-4), as well as the second upper sealing boss (2-2) and the second lower sealing boss (2-5), are located in the same vertical direction.

4. The automotive brake booster vacuum pump flange sealing structure as described in claim 2, characterized in that, The sealing ring (2) has mounting bosses (2-10) spaced apart on both sides. The cross section of the sealing groove is rectangular. The mounting bosses (2-10) on both sides are interference fit with the side wall of the sealing groove.

5. The automotive brake booster vacuum pump flange sealing structure as described in claim 2, characterized in that, The sealing ring (2) is composed of an arc segment (2-7), a straight segment (2-8), and a broken line segment (2-9).

6. The automotive brake booster vacuum pump flange sealing structure as described in claim 5, characterized in that, The two ends of the symmetrically arranged straight line segment (2-8) are connected to the arc segment (2-7) and the broken line segment (2-9) respectively.

7. The automotive brake booster vacuum pump flange sealing structure as described in claim 6, characterized in that, The intersections of the straight line segment (2-8) with the arc segment (2-7) and the broken line segment (2-9) are rounded.

8. The automotive brake booster vacuum pump flange sealing structure as described in claim 6, characterized in that, The arc segment (2-7) is semi-circular.

9. The automotive brake booster vacuum pump flange sealing structure as described in claim 6, characterized in that, The arc segment (2-7) and the broken line segment (2-9) are provided with mounting bosses (2-10) on both sides of the middle, and four mounting bosses (2-10) are symmetrically provided on the straight line segment (2-8) on one side.

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