A car vacuum pump with monitoring function

Abstract

This utility model relates to the field of automotive vacuum pump technology and discloses an automotive vacuum pump with monitoring function. It includes an electronic vacuum pump, an inlet pipe disposed on one side wall of the middle portion of the electronic vacuum pump, a pressure sensor disposed on the side wall of the inlet pipe, a first air flow sensor disposed at the end of the inlet pipe away from the electronic vacuum pump, and an outlet pipe disposed in the middle of the side wall of the electronic vacuum pump opposite the inlet pipe, with a second air flow sensor disposed at the end of the outlet pipe away from the electronic vacuum pump. By placing a pressure sensor and a first air flow sensor on the inlet pipe of the electronic vacuum pump, and a second air flow sensor on its outlet pipe, the automotive control system can monitor the operating status, airtightness, and other parameters of the electronic vacuum pump to determine whether the electronic vacuum pump requires maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of automotive vacuum pump technology, specifically an automotive vacuum pump with monitoring function. Background Technology

[0002] A vacuum pump in a car is also called a power brake pump. As the name suggests, a vacuum pump is used to create a vacuum. Most cars use hydraulic power brakes, while trucks and buses typically use pneumatic power brakes. The function of a car vacuum pump is to generate negative pressure, thereby increasing braking force. For vehicles powered by diesel engines, because the engine uses compression ignition, the intake manifold cannot provide the same level of vacuum pressure, so a vacuum pump is needed to provide a vacuum source. Vacuum pumps are generally used for power assist; they continuously pump air while maintaining atmospheric pressure, thus creating negative pressure. This negative pressure generates a suction force or a pushing force, achieving the power assist. With technological advancements, most vacuum pumps used in modern cars are now compact electronic vacuum pumps.

[0003] However, existing electronic vacuum pumps lack monitoring structures in their inlet and outlet configurations, making it impossible for vehicles to know the working status of the vacuum pump in real time. When the electronic vacuum pump is damaged, it is still necessary to troubleshoot the problem step by step, which is not practical enough. Therefore, this paper proposes an automotive vacuum pump with monitoring function. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides an automotive vacuum pump with monitoring function, which effectively solves the problems existing in the current automotive vacuum pump.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a car vacuum pump with monitoring function, including an electronic vacuum pump. An air inlet pipe is disposed on one side wall of the middle portion of the electronic vacuum pump. A pressure sensor is disposed on the side wall of the air inlet pipe. A first air flow sensor is disposed at the end of the air inlet pipe away from the electronic vacuum pump. An air outlet pipe is disposed in the middle of the side wall of the electronic vacuum pump directly opposite the air inlet pipe. A second air flow sensor is disposed at the end of the air outlet pipe away from the electronic vacuum pump. A shock-absorbing cap is disposed around the upper periphery of the electronic vacuum pump. A convex ring is formed on the inner wall of the shock-absorbing cap. A first bracket is disposed on the side wall of the electronic vacuum pump on one side of the air inlet pipe. First shock-absorbing pads are disposed at the upper and lower parts of the first bracket at the end away from the electronic vacuum pump. A second bracket is disposed on the side wall of the electronic vacuum pump away from the first bracket. Second shock-absorbing pads are disposed at the upper and lower parts of the second bracket at the end away from the electronic vacuum pump.

[0006] Preferably, the air intake pipe is connected to the air intake end of the electronic vacuum pump via a flange, the air pressure sensor is connected to the side wall of the air intake pipe via a thread, and the first air flow sensor is connected to the end of the air intake pipe via a thread. The air pressure sensor can sense the air pressure at the air intake end of the electronic vacuum pump in real time, that is, sense the pressure of the air drawn by the electronic vacuum pump in real time, and feed the sensed information back to the vehicle's control system in real time to determine whether the electronic vacuum pump has achieved the required vacuum. The first air flow sensor does not affect the connection between the air intake pipe and the vehicle's vacuum booster structure, and can sense the air flow through the air intake pipe in real time and feed it back to the vehicle's control system.

[0007] Preferably, the exhaust pipe is connected to the exhaust end of the electronic vacuum pump via a flange, and the second air flow sensor is connected to the end of the exhaust pipe via a thread. The second air flow sensor does not affect the connection between the exhaust pipe and other structures, and can sense the air flow through the exhaust pipe in real time and provide feedback to the vehicle's control system. The vehicle's control system can compare the feedback data from the first air flow sensor with the feedback data from the second air flow sensor to determine whether the intake and exhaust volumes of the electronic vacuum pump are the same, and to determine the airtightness and operational stability of the electronic vacuum pump.

[0008] Preferably, the shock-absorbing cap is inserted into the upper end of the electronic vacuum pump, and the convex ring protrudes inward on the inner wall of the shock-absorbing cap, which makes the connection between the shock-absorbing cap and the electronic vacuum pump more secure.

[0009] Preferably, both the first bracket and the second bracket are formed on the sidewall of the electronic vacuum pump.

[0010] Preferably, the first shock absorber is connected to the first bracket via a slot, and the second shock absorber is connected to the second bracket via a slot. Bolts are used to pass through the first shock absorber and the first bracket, and the second shock absorber and the second bracket, respectively, to connect and fix the electronic vacuum pump to the vehicle structure.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this automotive vacuum pump with monitoring function, by installing a pressure sensor and a first air flow sensor on the air inlet pipe of the electronic vacuum pump, and a second air flow sensor on its outlet pipe, the vehicle control system can monitor the working status, airtightness, and other aspects of the electronic vacuum pump to determine whether the electronic vacuum pump needs maintenance. The shock absorber cap, the first shock absorber pad, and the second shock absorber pad enable the electronic vacuum pump to have good shock absorption performance, greatly reducing the impact of vibrations generated by vehicle operation on the electronic vacuum pump. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the back structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the shock-absorbing cap in this utility model;

[0017] In the diagram: 1. Electronic vacuum pump; 2. Inlet pipe; 3. Air pressure sensor; 4. First air flow sensor; 5. Outlet pipe; 6. Second air flow sensor; 7. Shock absorber cap; 8. Convex ring; 9. First bracket; 10. First shock absorber pad; 11. Second bracket; 12. Second shock absorber pad. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] In this embodiment, by Figure 1-3 The present invention includes an electronic vacuum pump 1, an air inlet pipe 2 disposed on one side wall of the middle portion of the electronic vacuum pump 1, a pressure sensor 3 disposed on the side wall of the air inlet pipe 2, a first air flow sensor 4 disposed at the end of the air inlet pipe 2 away from the electronic vacuum pump 1, an air outlet pipe 5 disposed in the middle of the side wall of the electronic vacuum pump 1 directly opposite the air inlet pipe 2, a second air flow sensor 6 disposed at the end of the air outlet pipe 5 away from the electronic vacuum pump 1, a shock-absorbing cap 7 disposed on the upper periphery of the electronic vacuum pump 1, a convex ring 8 formed on the inner wall of the shock-absorbing cap 7, a first bracket 9 disposed on the side wall of the electronic vacuum pump 1 on one side of the air inlet pipe 2, a first shock-absorbing pad 10 disposed on the upper and lower parts of the end of the first bracket 9 away from the electronic vacuum pump 1, and a second bracket 11 disposed on the side wall of the electronic vacuum pump 1 away from the first bracket 9, a second shock-absorbing pad 12 disposed on the upper and lower parts of the end of the second bracket 11 away from the electronic vacuum pump 1.

[0020] The intake pipe 2 is connected to the intake end of the electronic vacuum pump 1 via a flange. The pressure sensor 3 is connected to the side wall of the intake pipe 2 via a thread. The first air flow sensor 4 is connected to the end of the intake pipe 2 via a thread. The pressure sensor 3 can sense the air pressure at the intake end of the electronic vacuum pump 1 in real time, that is, sense the pressure of the air drawn by the electronic vacuum pump 1 in real time, and feed the sensed information back to the vehicle's control system in real time to determine whether the vacuum drawn by the electronic vacuum pump 1 meets the requirements. The first air flow sensor 4 does not affect the connection between the intake pipe 2 and the vehicle's vacuum booster structure, and can sense the air flow through the intake pipe 2 in real time and feed it back to the vehicle's control system.

[0021] The exhaust pipe 5 is connected to the exhaust end of the electronic vacuum pump 1 via a flange, and the second air flow sensor 6 is connected to the end of the exhaust pipe 5 via a thread. The second air flow sensor 6 does not affect the connection between the exhaust pipe 5 and other structures, and can sense the air flow through the exhaust pipe 5 in real time and feed it back to the vehicle's control system. The vehicle's control system can compare the feedback data from the first air flow sensor 4 with the feedback data from the second air flow sensor 6 to determine whether the intake and exhaust volumes of the electronic vacuum pump 1 are the same, and to determine the airtightness and operational stability of the electronic vacuum pump 1.

[0022] The shock absorber cap 7 is inserted into the upper end of the electronic vacuum pump 1. The convex ring 8 protrudes inward on the inner wall of the shock absorber cap 7, which makes the connection between the shock absorber cap 7 and the electronic vacuum pump 1 more secure. The first bracket 9 and the second bracket 11 are both formed on the side wall of the electronic vacuum pump 1. The first shock absorber pad 10 is connected to the first bracket 9 through a slot, and the second shock absorber pad 12 is connected to the second bracket 11 through a slot. Bolts are used to pass through the first shock absorber pad 10, the first bracket 9, the second shock absorber pad 12, and the second bracket 11 respectively to connect and fix the electronic vacuum pump 1 to the vehicle structure. The shock absorber cap 7 will contact the vehicle structure. At this time, the shock absorber cap 7, the first shock absorber pad 10, and the second shock absorber pad 12 can give the electronic vacuum pump 1 good shock absorption performance, which greatly reduces the impact of the vibration generated by the vehicle operation on the electronic vacuum pump 1.

[0023] Working principle: Bolts are used to connect and fix the electronic vacuum pump 1 to the vehicle structure by passing through the first damping pad 10, the first bracket 9, the second damping pad 12, and the second bracket 11 respectively. The damping cap 7 will be in contact with the vehicle structure. At this time, the damping cap 7, the first damping pad 10, and the second damping pad 12 enable the electronic vacuum pump 1 to have good shock absorption performance, greatly reducing the impact of vibration generated by the vehicle operation on the electronic vacuum pump 1. The electronic vacuum pump 1 is connected to the vehicle's electrical system and controlled by the vehicle's control system. The air pressure sensor 3 can sense the air pressure at the intake end of the electronic vacuum pump 1 in real time, that is, sense the pressure of the air drawn by the electronic vacuum pump 1 in real time, and feed back the sensed information to the vehicle in real time. The control system determines whether the vacuum pump 1 has achieved the required level of vacuum. The first air flow sensor 4 does not affect the connection between the intake pipe 2 and the automotive vacuum booster structure, and can sense the air flow through the intake pipe 2 in real time and provide feedback to the automotive control system. The second air flow sensor 6 does not affect the connection between the exhaust pipe 5 and other structures, and can sense the air flow through the exhaust pipe 5 in real time and provide feedback to the automotive control system. The automotive control system can compare the feedback data from the first air flow sensor 4 with the feedback data from the second air flow sensor 6 to determine whether the intake and exhaust volumes of the electronic vacuum pump 1 are the same, and to determine the airtightness and operational stability of the electronic vacuum pump 1.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A car vacuum pump with monitoring function, comprising an electronic vacuum pump (1), characterized in that: An air inlet pipe (2) is provided on one side wall of the middle part of the electronic vacuum pump (1). A pressure sensor (3) is provided on the side wall of the air inlet pipe (2). A first air flow sensor (4) is provided at the end of the air inlet pipe (2) away from the electronic vacuum pump (1). An air outlet pipe (5) is provided in the middle of the side wall of the electronic vacuum pump (1) directly opposite the air inlet pipe (2). A second air flow sensor (6) is provided at the end of the air outlet pipe (5) away from the electronic vacuum pump (1). A shock-absorbing cap is provided on the upper periphery of the electronic vacuum pump (1). 7) A convex ring (8) is formed on the inner wall of the shock absorber cap (7). A first bracket (9) is provided on the side wall of the electronic vacuum pump (1) located on one side of the air inlet pipe (2). A first shock absorber pad (10) is provided on the upper and lower parts of the first bracket (9) away from the electronic vacuum pump (1). A second bracket (11) is provided on the side wall of the electronic vacuum pump (1) away from the first bracket (9). A second shock absorber pad (12) is provided on the upper and lower parts of the second bracket (11) away from the electronic vacuum pump (1).

2. The automotive vacuum pump with monitoring function according to claim 1, characterized in that: The air inlet pipe (2) is connected to the air inlet end of the electronic vacuum pump (1) via a flange, the air pressure sensor (3) is connected to the side wall of the air inlet pipe (2) via a thread, and the first air flow sensor (4) is connected to the end of the air inlet pipe (2) via a thread.

3. The automotive vacuum pump with monitoring function according to claim 1, characterized in that: The air outlet pipe (5) is connected to the air outlet end of the electronic vacuum pump (1) via a flange, and the second air flow sensor (6) is connected to the end of the air outlet pipe (5) via a thread.

4. The automotive vacuum pump with monitoring function according to claim 1, characterized in that: The shock absorber cap (7) is inserted into the upper end of the electronic vacuum pump (1), and the convex ring (8) protrudes inward on the inner wall of the shock absorber cap (7).

5. A car vacuum pump with monitoring function according to claim 1, characterized in that: The first bracket (9) and the second bracket (11) are both formed on the side wall of the electronic vacuum pump (1).

6. A car vacuum pump with monitoring function according to claim 1, characterized in that: The first shock-absorbing pad (10) is connected to the first bracket (9) through a slot, and the second shock-absorbing pad (12) is connected to the second bracket (11) through a slot.

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