Corrosion-resistant pressure sensor for automobile

Abstract

The utility model discloses an automobile corrosion-resistant pressure sensor, which comprises a shell, and a detection assembly is arranged in the shell. The detection assembly comprises guide rods, the guide rods are fixedly connected to the inner wall of the shell, a controller is fixedly installed in the shell, and the controller is electrically connected with each guide rod. According to the corrosion-resistant pressure sensor for the automobile, if the shell is broken and corrosive liquid outside the shell flows in in the using process, the corrosive liquid can be in contact with the guide rods, so that a passage is formed between the two guide rods, weak current can pass through the guide rods to conduct electricity through the liquid, and when the liquid is in contact with the guide rods, the two guide rods are conducted when meeting the liquid to form loop resistance; therefore, the current changes. And the controller carries out rapid operation according to the proportional relation between the resistance and the conductor length, sends out an alarm signal and gives out a specific leakage position.

Description

TECHNICAL FIELD

[0001] The utility model relates to a car pressure sensor technical field, specifically a car corrosion -resistant pressure sensor. BACKGROUND

[0002] The car corrosion -resistant pressure sensor is a kind of sensor specially designed for car environment, can accurately measure pressure under corrosive medium or severe condition. Generally adopt special material and technology, such as corrosion -resistant metal alloy, ceramic or plastic etc., can resist the erosion of corrosive medium such as fuel, lubricating oil, coolant, exhaust gas, ensure that the sensor keeps stable performance in long-term use.

[0003] At present, the corrosion -resistant pressure sensor applied in the field of car, with special material selection and technology, is excellent in corrosion resistance. However, in the complex car operating environment, the shell of this kind of sensor is inevitably broken down by the influence of mechanical stress, temperature change or sudden external force impact, even if it has strong corrosion resistance. Once the shell is broken, the corrosive liquid will invade, and the internal precision components will be directly exposed, which is easy to be damaged. More importantly, the existing sensor lacks effective monitoring mechanism, so that the user is difficult to detect the shell damage in time, and cannot take maintenance measures in the first time, which not only may lead to the sharp decline of sensor measurement accuracy, and even seriously affects the normal operation of car related system, and buries the safety hazard.

[0004] Therefore, the utility model provides a car corrosion -resistant pressure sensor to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of prior art, the utility model provides a car corrosion -resistant pressure sensor, solves the above problems.

[0006] To achieve the above object, the utility model is realized by the following technical scheme: a car corrosion -resistant pressure sensor, including shell, the inside of the shell is provided with detection assembly;The detection assembly includes guide rod, the guide rod is fixedly connected to the inner wall of shell, and the controller is fixedly installed in the inside of shell, and the controller is electrically connected with each guide rod.

[0007] Further, the guide rods are uniformly arranged on the inner wall of the shell and are spaced apart from each other.

[0008] By adopting the above technical scheme, liquid can flow between the two guide rods when the shell is broken.

[0009] Further, the inner wall of the shell is fixedly connected with a baffle.

[0010] By adopting the above technical scheme, the controller is separated for protection and other components are installed.

[0011] Further, one side of the partition plate is fixedly connected with the secondary protection shell.

[0012] By adopting the above technical scheme, the internal elements are also protected, and the protection effect is strengthened.

[0013] Further, the inner wall of the shell and the outer wall of the secondary protection shell are fixedly connected with the sealing ring.

[0014] By adopting the above technical scheme, the strength between the shell and the secondary protection shell is strengthened.

[0015] Further, one side of the partition plate is fixedly connected with the secondary protection shell.

[0016] By adopting the above technical scheme, the sensitive element body is more stable, and even if the secondary protection shell is broken, the corrosive liquid is kept at a distance from the sensitive element body through the isolation block, thereby being protected.

[0017] Advantages

[0018] The utility model provides a kind of automobile corrosion-resistant pressure sensor.Compared with prior art, it has the following advantages:

[0019] 1, the automobile corrosion-resistant pressure sensor, if rupture occurs in the use process of shell, the corrosive liquid of its outside flows in, and corrosive liquid will contact with guide rod, to form passage between the two guide rods, guide rod can pass through weak current through liquid conduction, when liquid contacts with guide rod, two guide rods meet liquid conduction, form loop resistance, thereby current change occurs.Controller is according to the proportional relationship of resistance and conductor length fast operation, issues alarm signal and gives specific leakage position.

[0020] 2, the automobile corrosion-resistant pressure sensor, through partition plate can be used to isolate controller and other components to protect them, while used for installing secondary protection shell and sensitive element body, sealing ring is used to seal the space between shell and secondary protection shell and strengthen the strength of one end of shell and secondary protection shell, isolation block is used to make sensitive element body more stable, even if secondary protection shell is broken, corrosive liquid is kept at a distance from sensitive element body through isolation block, thereby being protected. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0022] Figure 1 is the external structure perspective view of the present application;

[0023] Figure 2 is the structure enlarged view of the present application A;

[0024] Figure 3 is the structure sectional view of the present application;

[0025] Figure 4 is the internal structure view of the present application after removing the shell;

[0026] Figure 5 is the partial structure plan view of the present application.

[0027] In the figure: 1, shell; 2, detection assembly; 21, guide rod; 22, controller; 23, sealing ring; 24, secondary protection shell; 25, partition; 26, isolation block; 27, sensitive element main body. DETAILED DESCRIPTION

[0028] It should be noted that in the description of the embodiments of the present application, the terms "front, back" "left, right" "up, down" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] The present application will be further described in detail below by means of the drawings and examples.

[0030] Reference Figures 1 to 5The embodiment of the application provides a car corrosion-resistant pressure sensor, which comprises a shell 1, the inside of the shell 1 is provided with a detection assembly 2; the detection assembly 2 comprises guide rods 21, the guide rods 21 are fixedly connected to the inner wall of the shell 1, a controller 22 is fixedly installed in the inside of the shell 1, and the controller 22 is electrically connected with each guide rod 21. The guide rods 21 are uniformly arranged on the inner wall of the shell 1 and are spaced apart from each other.

[0031] In specific implementation: if the shell 1 is broken in the use process, the external corrosive liquid flows in, the corrosive liquid contacts the guide rods 21, a passage is formed between the two guide rods 21, the guide rods 21 can pass a weak current through the liquid, when the liquid contacts the guide rods 21, the two guide rods 21 are conducted by the liquid, a loop resistance is formed, and thus current change occurs. The controller 22 rapidly operates according to the proportional relationship between the resistance and the length of the conductor, an alarm signal is sent, and a specific leakage position is given.

[0032] Reference Figures 1 to 5 In one aspect of the embodiment, the inner wall of the shell 1 is fixedly connected with a partition plate 25. One side of the partition plate 25 is fixedly connected with a secondary protection shell 24. The inner wall of the shell 1 and the outer wall of the secondary protection shell 24 are fixedly connected with a sealing ring 23. The inner wall of the secondary protection shell 24 is fixedly connected with an isolation block 26, and the partition plate 25 is movably connected with the isolation block 26.

[0033] In specific implementation: the partition plate 25 can be used for isolating the controller 22 from other components to protect the controller 22, and is used for installing the secondary protection shell 24 and the sensitive element main body 27. The sealing ring 23 is used for sealing the space between the shell and the secondary protection shell 24 and strengthening the strength of one end of the shell 1 and the secondary protection shell 24. The isolation block 26 is used for making the sensitive element main body 27 more stable, so that even if the secondary protection shell 24 is broken, the sensitive element main body 27 can keep a distance from the corrosive liquid and is protected.

[0034] All electric devices in the scheme are powered through external power supply.

[0035] Working principle: In the process of using the sensor, if the shell 1 is broken, the corrosive liquid from outside will enter. The sensor is internally provided with two guide rods 21. When the corrosive liquid contacts the two guide rods 21, the two guide rods 21 will be successfully conducted due to the conductivity of the corrosive liquid, thereby forming a loop resistance, resulting in a change in the current in the loop.

[0036] The controller 22 can perform rapid and accurate operation according to the proportional relationship between the resistance and the length of the conductor. Once an abnormal current change is monitored, an alarm signal will be immediately sent out, and the specific leakage position will be determined.

[0037] The partition plate 25 effectively separates the controller 22 from other components, not only preventing other components from interfering with the normal operation of the controller 22, but also providing installation positions for the secondary protective shell 24 and the sensitive element body 27. The sealing ring 23 is installed between the shell 1 and the secondary protective shell 24, which not only effectively seals the space between the two, preventing liquid penetration, but also enhances the strength of the connection part between the shell 1 and the secondary protective shell 24. The isolation block 26 is installed around the sensitive element body 27, which plays a role in stabilizing the element. Even if the secondary protective shell 24 is unfortunately broken, the isolation block 26 can keep the sensitive element body 27 at a certain distance from the corrosive liquid, avoiding direct contact between the sensitive element body 27 and the liquid, and providing an additional layer of protection for the normal operation of the sensor.

[0038] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a list of elements does not only include those elements but also includes other elements not expressly listed or inherent to such process, method, article or apparatus.

[0039] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant pressure sensor for automobiles, comprising a housing (1), characterized in that: The detection component (2) is provided inside the outer shell (1); the detection component (2) includes a guide rod (21), the guide rod (21) is fixedly connected to the inner wall of the outer shell (1), and a controller (22) is fixedly installed inside the outer shell (1), the controller (22) is electrically connected to each guide rod 21.

2. The automotive corrosion-resistant pressure sensor according to claim 1, characterized in that: The guide rods (21) are evenly arranged on the inner wall of the outer shell (1) with a certain gap between them.

3. The automotive corrosion-resistant pressure sensor according to claim 1, characterized in that: A partition (25) is fixedly connected to the inner wall of the outer shell (1).

4. The automotive corrosion-resistant pressure sensor according to claim 3, characterized in that: A secondary protective shell (24) is fixedly connected to one side of the partition (25).

5. The automotive corrosion-resistant pressure sensor according to claim 1, characterized in that: A sealing ring (23) is fixedly connected between the inner wall of the outer shell (1) and the outer wall of the secondary protective shell (24).

6. The automotive corrosion-resistant pressure sensor according to claim 3, characterized in that: A sensitive element body (27) is fixedly installed on one side of the partition (25), and an isolation block (26) is fixedly connected to the inner wall of the secondary protective shell (24). The isolation block (26) is movably connected to the sensitive element body (27).

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