Supporting and sealing structure for oil inlet hole of valve body of hydraulic electric control booster

Abstract

The utility model relates to a supporting and sealing structure for an oil inlet hole of a hydraulic electric control booster valve body, and belongs to the technical field of automobile braking system components. The bottoms of the two connecting sleeves are arranged on a first step of an oil inlet hole of the valve body respectively, oil outlet nozzles of the liquid storage tanks are arranged on second steps of the connecting sleeves respectively, the bottoms of the liquid storage tanks are arranged on the tops of the connecting sleeves, the liquid storage tanks are connected with the valve body through supporting and sealing of the connecting sleeves, and the thicknesses of the connecting sleeves on the upper portions of the second steps are the same. The connecting sleeve has the advantages that the structure is novel, an original lip structure of the connecting sleeve is omitted, the maximum diameter is reduced, the radial size can be reduced to meet the space requirement, and materials and cost are saved; a step is additionally arranged on the inner wall of the oil inlet hole of the valve body, it is guaranteed that the overall height of the connecting sleeve is not changed, the supporting effect is achieved, the requirement for the arrangement space of the valve body can be met, and the supporting and sealing effects can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive braking system components, and specifically relates to a support and sealing structure for the oil inlet hole of a hydraulic and electric booster valve body. Background Art

[0002] In recent years, with the rapid development of the new energy vehicle industry, the automotive braking system is still an important part to ensure the safety of passengers and drivers. In the automotive braking system, the hydraulic and electric booster is gradually replacing the traditional vacuum booster.

[0003] The hydraulic and electric booster stores the brake fluid in a liquid storage tank, and the liquid storage tank is connected to the valve body to supplement the brake fluid to each brake pipeline during the braking process. As Figure 4 shown, the connecting sleeve 1 not only plays a role in supporting the liquid storage tank 2, but also provides sealing for the liquid storage tank 2 and the valve body 3.

[0004] The lip position of the existing connecting sleeve 1 is installed at the oil inlet hole of the valve body 3 to play a supporting role. The maximum diameter of the lip is Φ21.3. As Figure 5 shown, only when the distance H between the two oil inlet holes is large enough can the two connecting sleeves be installed in place.

[0005] There are many complex flow channels inside the valve body of the hydraulic and electric booster, and the spatial position is very compact. There will also be a situation where the distance H between the two oil inlet holes is small. At this time, the lips of the two connecting sleeves will interfere, resulting in problems affecting the assembly. Therefore, on the premise of ensuring the supporting and sealing functions, the connecting sleeve has the requirement of reducing the radial dimension. Summary of the Invention

[0006] The utility model provides a support and sealing structure for the oil inlet hole of a hydraulic and electric booster valve body to solve the problem of interference between the lips of the two connecting sleeves, which affects the assembly.

[0007] The technical solution adopted by the utility model is that it includes a connecting sleeve, a liquid storage tank and a valve body. The bottoms of the two connecting sleeves are respectively placed on the first step of the oil inlet hole of the valve body. The oil outlet nozzles of the liquid storage tank are respectively placed on the second step of the connecting sleeve. The bottom of the liquid storage tank is placed on the top of the connecting sleeve. The liquid storage tank is connected to the valve body through the support and sealing of each connecting sleeve. The thickness of the connecting sleeve above the second step is the same.

[0008] There is a gap between the liquid storage tank and the valve body.

[0009] The part of the connecting sleeve located in the gap has no lip structure.

[0010] The advantages of the present utility model are as follows: the structure is novel, the original lip structure of the connecting sleeve is cancelled, the maximum diameter is reduced, the radial dimension can be reduced to meet the space requirements, and materials are saved, thus reducing costs; the inner wall of the oil inlet hole of the valve body is provided with a step, which ensures that the overall height of the connecting sleeve remains unchanged and plays a supporting role, can meet the layout space of the valve body, and also has the effects of support and sealing. Brief Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings to be used in the description of the embodiments of the present utility model. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the embodiments of the present utility model and these drawings.

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is a schematic structural diagram of the connecting sleeve of the present utility model;

[0014] Figure 3 is a schematic structural diagram of the first step of the oil inlet hole of the valve body of the present utility model;

[0015] Figure 4 is the current sealing structure of the oil inlet hole of the valve body;

[0016] Figure 5 is a schematic structural diagram of the current connecting sleeve with a lip structure. Detailed Description of the Embodiments

[0017] The following will further elaborate on the present utility model in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model and are not intended to limit the present utility model. Additionally, it should be noted that for the sake of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0018] As Figure 1 、 2 and shown in FIG. 3, it includes a connecting sleeve 1, a liquid storage tank 2 and a valve body 3. The bottoms of the two connecting sleeves 1 are respectively placed on the first step 301 of the oil inlet hole of the valve body 3, the oil outlet nozzles 201 of the liquid storage tank 2 are respectively placed on the second step 101 of the connecting sleeve 1, the bottom of the liquid storage tank 2 is placed on the top of the connecting sleeve 1, the liquid storage tank 2 is connected to the valve body 3 through the support and sealing of each connecting sleeve 1, and the thickness of the connecting sleeve 1 above the second step 101 is the same.

[0019] There is a gap 4 between the liquid storage tank 2 and the valve body 3.

[0020] The part of the connecting sleeve 1 located in the gap 4 has no lip structure.

[0021] Working principle

[0022] The original lip structure of the connecting sleeve 1 is cancelled, which can reduce the radial dimension to meet the space requirements. A step 1 is added to the inner wall of the oil inlet hole of the valve body to ensure that the overall height of the connecting sleeve remains unchanged and plays a supporting role.

[0023] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the protection scope of the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, any person skilled in the art within the technical scope disclosed by the present invention can make equivalent substitutions or changes according to the technical solution and the inventive concept of the present invention. These simple modifications all belong to the protection scope of the present invention.

Claims

1. A hydraulic electric booster valve body oil inlet hole support sealing structure, comprising a connecting sleeve, a liquid storage tank and a valve body, characterized in that: The bottoms of the two connecting sleeves are respectively placed on step 1 of the oil inlet hole of the valve body, the oil outlet nozzles of the liquid storage tanks are respectively placed on step 2 of the connecting sleeves, the bottom of the liquid storage tanks is placed on the top of the connecting sleeves, the liquid storage tanks are connected to the valve body through the support and sealing of each connecting sleeve, and the thickness of the connecting sleeves on the upper part of step 2 is the same.

2. The hydraulic electric control booster valve body oil inlet hole support sealing structure according to claim 1, characterized in that: There is a gap between the liquid storage tank and the valve body.

3. The hydraulic electric control booster valve body oil inlet hole support sealing structure according to claim 2, characterized in that: The portion of the connecting sleeve located in the gap has no lip structure.

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