Automobile sensor housing and assembly method thereof

Abstract

The present application relates to the field of sensor processing, and in particular to an automotive sensor housing and an assembly method thereof, comprising a hollow housing with an open side, a cover detachably connected to the open side of the housing, an offset groove circumferentially formed on the inner sidewall of the housing extending to the open side, an inner cover slidingly engaged with the housing, the edge of the inner cover located in and slidingly engaged with the offset groove, a placement groove circumferentially formed at the bottom of the offset groove, a ring-shaped rubber bag placed in the placement groove, and a plurality of spikes for puncturing the rubber bag provided on the edge of the inner cover facing the rubber bag; a worker places a circuit board into the housing, then arranges the rubber bag in the placement groove, and then places a separator sponge in the placement groove; the worker inserts the inner cover into the housing, moves the edge of the inner cover into the offset groove, and the spikes pierce the separator sponge, arranges a pusher in the housing, and finally installs the cover on the open side of the housing. The present application has the effect of improving the damage prevention performance of the sensor.

Description

Technical Field

[0001] The present application relates to the field of sensor processing, and in particular to an automobile sensor housing and an assembly method thereof. Background Art

[0002] A sensor is a detection device that can sense the information being measured and convert the sensed information into electrical signals or other required forms of information output according to certain rules to meet the requirements of information transmission, processing, storage, display, recording and control.

[0003] The sensor housing is a key component of the sensor, determining the environment in which the sensor is suitable. Especially when the sensor is used in automobiles, the sensor housing must withstand and protect the internal electronic components from heat, electricity, humidity, and impact.

[0004] With the increasing severity of extreme natural weather in recent years, flooding often occurs in many cities, causing cars to be soaked in rainwater for a long time. However, most sensors on cars can only prevent short-term immersion in water and cannot withstand long-term immersion in water without damage, which is an obvious shortcoming. Summary of the Invention

[0005] In order to improve the problem that a sensor may be damaged due to water leakage when immersed in rainwater for a long time, the present application provides an automobile sensor housing and an assembly method thereof.

[0006] In a first aspect, the present application provides an automotive sensor housing, which adopts the following technical solution:

[0007] A car sensor housing comprises a shell with a hollow interior and an opening on one side, a sealing cover being detachably connected to one side of the shell opening, a circuit board being placed in the shell, an offset groove extending to the open side of the shell being circumferentially opened on the inner side wall of the shell, an inner cover being slidably fitted in the shell, an edge of the inner cover being located in and slidably fitted with the offset groove, a placement groove being circumferentially opened at the bottom of the offset groove, a ring-shaped rubber bag being placed in the placement groove, the rubber bag being filled with sealing rubber, a separating sponge being arranged between the rubber bag and the edge of the inner cover, a plurality of spikes for puncturing the rubber bag being provided on the edge of the inner cover facing the rubber bag, and a pushing member for pushing the inner cover toward the rubber bag is also provided in the shell.

[0008] By adopting the above technical solution, when the sensor shell leaks due to being immersed in rainwater for a long time, the pushing member will push the inner cover to move towards the rubber bag, and the inner cover will squeeze the separating sponge until the thorn tip pierces the rubber bag, causing the sealing glue to flow into the placement groove. When the sealing glue contacts the rainwater, it will quickly solidify, thereby tightly sealing the contact point between the inner cover and the shell, reducing the possibility of damage to the internal circuit board of the sensor due to leakage.

[0009] Optionally, a receiving opening is formed on a side of the inner cover facing away from the rubber bag, and the pushing piece includes gas-releasing particles placed in the receiving opening, and the gas-releasing particles rapidly generate a large amount of gas when in contact with water.

[0010] By adopting the above technical solution, when the sensor housing leaks, rainwater flows into the space between the sealing cover and the inner cover and contacts the gas-releasing particles. The gas-releasing particles react with the rainwater to generate a large amount of gas. The gas is difficult to be discharged from between the inner cover and the sealing cover in a short time, thereby pushing the inner cover to move closer to the rubber bag.

[0011] Optionally, the cover is located at the bottom of the shell.

[0012] By adopting the above technical solution, when the rubber bag is damaged, the sealing rubber can automatically flow to the contact point between the inner cover and the shell to perform sealing.

[0013] Optionally, an overflow hole is opened between the inner and outer side walls of the shell, and a wear-resistant elastic film is arranged on the outside of the shell relative to the overflow hole, and the circumferential edge of the wear-resistant elastic film is bonded to the outer side wall of the shell.

[0014] By adopting the above technical solution, when the inner cover moves toward the rubber bag, the original air in the shell overflows through the overflow hole and pushes the wear-resistant elastic membrane to bulge, thereby allowing the inner cover to move a sufficient distance.

[0015] Optionally, a resistance wire is circumferentially arranged on an edge of the inner cover facing the rubber bag relative to the placement groove, and both ends of the resistance wire are fixedly inserted into the accommodating opening.

[0016] By adopting the above technical solution, when the circuit board is damaged, the worker first removes the cover from the shell, and then passes current through the resistance wire. The resistance wire quickly heats up under the action of the current, and then heats the solidified sealing glue. After the sealing glue softens, the worker can remove the inner cover from the shell.

[0017] Optionally, the inner cover is provided with insertion holes at two positions relative to where the resistance wire is inserted into the accommodating opening, and conductive fillers in contact with the end of the resistance wire are provided in the insertion holes.

[0018] By adopting the above technical solution, workers insert the conductive connector into the insertion hole, so that the conductive connector contacts the conductive filler. The setting of the conductive filler can ensure the stability of the conductive connection between the conductive connector and the resistance wire.

[0019] Optionally, a protection groove for accommodating the resistance wire is opened on a side of the inner cover opposite to the rubber bag, and the protection groove is filled with protective glue.

[0020] By adopting the above technical solution, the protective groove cooperates with the protective glue filling to protect the resistance wire, thereby reducing the possibility of the resistance wire being accidentally damaged during the assembly process.

[0021] In a second aspect, the present application provides a method for assembling an automotive sensor housing, which adopts the following technical solution:

[0022] A method for assembling an automobile sensor housing comprises the following steps:

[0023] S1. The worker places the circuit board into the housing, then places the plastic bag into the placement groove, and then places the separation sponge into the placement groove;

[0024] S2. The worker inserts the inner cover into the shell, moves the edge of the inner cover into the offset groove, and the thorn tip pierces the partition sponge. The pusher is arranged in the shell, and finally the cover is installed on the open side of the shell.

[0025] By adopting the above technical solution, when the sensor shell leaks due to being immersed in rainwater for a long time, the pushing member will push the inner cover to move towards the rubber bag, and the inner cover will squeeze the separating sponge until the thorn tip pierces the rubber bag, causing the sealing glue to flow into the placement groove. When the sealing glue encounters rainwater, it will quickly solidify, thereby tightly sealing the contact point between the inner cover and the shell, reducing the possibility of damage to the internal circuit board of the sensor due to leakage.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. When the sensor housing leaks due to prolonged immersion in rainwater, the pusher pushes the inner cover toward the rubber bag, squeezing the separator sponge until the spikes pierce the rubber bag, allowing the sealing glue to flow into the placement groove. When the sealing glue comes into contact with rainwater, it quickly solidifies, tightly sealing the contact point between the inner cover and the housing, reducing the possibility of damage to the sensor's internal circuit board due to leakage;

[0028] 2. When the sensor housing leaks, rainwater flows between the sealing cover and the inner cover and contacts the gas-releasing particles. The gas-releasing particles react with the rainwater to produce a large amount of gas. The gas is difficult to be discharged from between the inner cover and the sealing cover in a short time, thus pushing the inner cover toward the rubber bag.

[0029] 3. When the circuit board is damaged, the worker first removes the cover from the shell, and then passes current through the resistance wire. The resistance wire heats up rapidly under the action of the current, and then heats the solidified sealing glue. After the sealing glue softens, the worker can remove the inner cover from the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of an embodiment of the present application.

[0031] Figure 2 It is a cross-sectional view showing the positional relationship between the sealing cover, inner cover and separating sponge in the embodiment of the present application.

[0032] Figure 3 It is a cross-sectional view showing the positional relationship between the inner cover, protective filler and resistance wire in the embodiment of the present application.

[0033] Explanation of the accompanying reference numerals: 1. Shell; 101. Offset groove; 102. Placement groove; 103. Overflow hole; 2. Sealing cover; 3. Inner cover; 301. Receiving port; 302. Insertion guide hole; 303. Protective groove; 4. Rubber bag; 5. Sealing glue; 6. Separating sponge; 7. Spike tip; 8. Gas-releasing particles; 9. Wear-resistant elastic film; 10. Resistance wire; 11. Conductive filler; 12. Protective filling glue. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-3 This application is described in further detail.

[0035] Example 1

[0036] The embodiment of the present application discloses an automobile sensor housing.

[0037] Reference Figure 1 The automobile sensor housing includes a shell 1 with a hollow interior and an open bottom. A cover 2 is bolted to the bottom of the shell 1, and a circuit board is placed in the shell 1.

[0038] Reference Figure 1 and Figure 2 The inner wall of the housing 1 is provided with an annular offset groove 101, which extends to the opening side of the bottom of the housing 1. The inner cover 3 is placed in the housing 1, and the edge of the inner cover 3 is located in the offset groove 101 and slides with it.

[0039] Reference Figure 1 and Figure 2 A placement groove 102 is circumferentially opened at the bottom of the offset groove 101 , and a ring-shaped rubber bag 4 is placed in the placement groove 102 , and the rubber bag 4 is filled with sealing rubber 5 .

[0040] A separation sponge 6 is arranged between the rubber bag 4 and the edge of the inner cover 3 . A plurality of thorn points 7 are integrally formed circumferentially on the edge of the inner cover 3 facing the rubber bag 4 . The thorn points 7 are used to puncture the rubber bag 4 .

[0041] An accommodating opening 301 is formed on a side of the inner cover 3 facing away from the rubber bag 4 . A pushing member is placed in the accommodating opening 301 for pushing the inner cover 3 to move toward the rubber bag 4 .

[0042] The pushing member includes a plurality of gas-releasing particles 8. The gas-releasing particles 8 are effervescent tablets in the prior art. When the effervescent tablets come into contact with water, they can quickly generate a large amount of gas.

[0043] Reference Figure 1 and Figure 2 When the sensor housing leaks, rainwater flows into the space between the sealing cover 2 and the inner cover 3 and contacts the gas releasing particles 8. The gas releasing particles 8 react with the rainwater and quickly generate a large amount of gas.

[0044] Since the gas is difficult to be discharged from the gap between the cover 2 and the shell 1 in a short time, the gas will push the inner cover 3 to move towards the rubber bag 4.

[0045] The inner cover 3 drives the thorn tip 7 to penetrate the partition sponge 6 and puncture the rubber bag 4. The sealing glue 5 in the rubber bag 4 flows into the placement groove 102. When the sealing glue 5 contacts rainwater, it will solidify quickly, thereby quickly sealing the contact point between the inner cover 3 and the shell 1.

[0046] The inner cover 3 and the housing 1 are sealed quickly by the sealing glue 5 reacting with water, thereby reducing the possibility of rainwater leaking into the housing 1 and causing damage to the circuit board.

[0047] Reference Figure 1 and Figure 2 An overflow hole 103 is opened before the inner and outer walls of the shell 1, and a circular wear-resistant elastic membrane 9 is arranged at a position outside the shell 1 relative to the overflow hole 103, and the circumferential edge of the wear-resistant elastic membrane 9 is bonded to the outer wall of the shell 1.

[0048] Reference Figure 1 and Figure 2 When the inner cover 3 moves toward the rubber bag 4, the original air in the shell 1 is squeezed out through the overflow hole 103, and the squeezed air pushes the wear-resistant elastic membrane 9 to bulge, thereby ensuring that the inner cover 3 can move a sufficient distance in the shell 1.

[0049] Reference Figure 2 and Figure 3 A protective groove 303 is circumferentially opened on the side of the inner cover 3 facing the rubber bag 4 relative to the placement groove 102. The resistance wire 10 is arranged in the protective groove 303, and the protective groove 303 is filled with a protective filler 12. The solidification effect of the protective filler 12 protects the resistance wire 10, reducing the possibility of damaging the resistance wire 10 during the assembly process of the sensor housing.

[0050] Reference Figure 2 and Figure 3 The two ends of the resistance wire 10 are fixedly inserted into the accommodating port 301, and the inner cover 3 is provided with insertion holes 302 at two positions relative to the resistance wire 10 inserted into the accommodating port 301. The insertion holes 302 are filled with conductive fillers 11, and the conductive fillers 11 are in contact with the ends of the resistance wire 10.

[0051] Reference Figure 2 and Figure 3 When the circuit board is damaged, the worker inserts the conductive plug into the corresponding plug hole 302, thereby connecting the resistance wire 10 to the circuit. The resistance wire 10 heats up under the action of the current, and then heats the protective filling glue 12 and the sealing glue 5. After the two glues are softened, the worker can remove the inner cover 3 from the shell 1.

[0052] Reference Figure 2 and Figure 3 The provision of the conductive filler 11 and the insertion hole 302 can help the conductive connector to stably contact the resistance wire 10, thereby improving the heating effect of the resistance wire 10 on the protective filler 12 and the sealing glue 5.

[0053] The implementation principle of Example 1 is as follows: when the sensor shell 1 leaks due to being immersed in rainwater for a long time, rainwater flows into the space between the sealing cover 2 and the inner cover 3. The gas-releasing particles 8 in the accommodating port 301 produce a chemical reaction after contacting the rainwater and release a large amount of gas. Since the gas is difficult to be discharged from the gap between the sealing cover 2 and the shell 1 in a short time, it can push the inner cover 3 to move toward the rubber bag 4. The inner cover 3 squeezes the separating sponge 6 until the thorn tip 7 pierces the rubber bag 4. The sealing glue 5 flows out of the rubber bag 4 to the contact point between the inner cover 3 and the shell 1. When the sealing glue 5 contacts the rainwater, it will solidify quickly, thereby tightly sealing the contact point between the inner cover 3 and the shell 1, reducing the possibility of damage to the internal circuit board of the sensor due to water leakage.

[0054] Example 2

[0055] Example 2 of the present application discloses a method for assembling an automobile sensor housing, comprising the following steps:

[0056] S1. A worker places a circuit board into the housing 1, then places the rubber pack 4 into the placement groove 102, and then places the separation sponge 6 into the placement groove 102;

[0057] S2. The worker arranges the resistance wire 10 in the protective groove 303 and passes both ends of the resistance wire 10 into the insertion hole 302. Then, the worker fills the protective groove 303 with protective glue 12 and arranges the conductive filler 11 in the insertion hole 302. Then, the worker inserts the inner cover 3 into the shell 1. The edge of the inner cover 3 moves to the offset groove 101. The thorn tip 7 penetrates into the partition sponge 6. The gas-releasing particles 8 are placed in the receiving port 301. Finally, the cover 2 is bolted to the open side of the shell 1.

[0058] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An automotive sensor housing, comprising a housing (1) having a hollow interior and an opening on one side, a cover (2) being detachably connected to the open side of the housing (1), and a circuit board being placed in the housing (1), characterized in that: An offset groove (101) extending to the opening side thereof is formed on the inner side wall of the shell (1), an inner cover (3) is arranged in the shell (1), the edge of the inner cover (3) is located in the offset groove (101) and is slidably matched therewith, a placement groove (102) is formed on the bottom of the offset groove (101), an annular rubber bag (4) is placed in the placement groove (102), the rubber bag (4) is filled with sealing rubber (5), a separation sponge (6) is arranged between the rubber bag (4) and the edge of the inner cover (3), a plurality of thorn points (7) for puncturing the rubber bag (4) are provided on the edge of the inner cover (3) facing the rubber bag (4), and a pushing member for pushing the inner cover (3) to move toward the rubber bag (4) is also provided in the shell (1); The inner cover (3) is provided with a receiving opening (301) on a side facing away from the rubber bag (4), and the pushing member comprises gas-releasing particles (8) placed in the receiving opening (301), and the gas-releasing particles (8) rapidly generate a large amount of gas when in contact with water; An overflow hole (103) is opened between the inner and outer walls of the shell (1), and a wear-resistant elastic film (9) is arranged on the outside of the shell (1) at a position relative to the overflow hole (103), and the circumferential edge of the wear-resistant elastic film (9) is bonded to the outer wall of the shell (1); A resistance wire (10) is circumferentially arranged at a position of the edge of the inner cover (3) facing the rubber bag (4) relative to the placement groove (102), and both ends of the resistance wire (10) are fixedly inserted into the accommodating opening (301); The inner cover (3) is provided with insertion holes (302) at two positions relative to the resistance wire (10) passing through the accommodating opening (301), and conductive fillers (11) in contact with the ends of the resistance wire (10) are provided in the insertion holes (302).

2. The automotive sensor housing according to claim 1, characterized in that: The sealing cover (2) is located at the bottom of the housing (1).

3. The automotive sensor housing according to claim 1, characterized in that: A protective groove (303) for accommodating the resistance wire (10) is provided on a side of the inner cover (3) opposite to the rubber bag (4), and the protective groove (303) is filled with protective glue (12).

4. A method for assembling an automotive sensor housing according to any one of claims 1 to 3, characterized in that: The steps include: S1. A worker places a circuit board into a housing (1), then places a rubber bag (4) into a placement groove (102), and then places a separation sponge (6) into the placement groove (102); S2. The worker inserts the inner cover (3) into the shell (1), moves the edge of the inner cover (3) into the offset groove (101), and the thorn tip (7) penetrates into the partition sponge (6). The pusher is arranged in the shell (1), and finally the cover (2) is installed on the opening side of the shell (1).

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