Sensor device

Abstract

The invention relates to a sensor device. A sensor device according to an embodiment of the present invention comprises: an oscillator defined as a sensing signal transmitting / receiving unit that generates and receives a signal for sensing; a main board which is electrically connected to the oscillator and on which a control chip for analyzing and processing a signal transmitted from the oscillator is mounted; a cover for accommodating the oscillator; a housing that accommodates the main board, and the cover is inserted into one end of the housing and coupled to the housing; a shield case main body that surrounds at least a portion of the main board and shields the inflow of noise; and a waterproof gasket sandwiched between the rear end of the cover and the front end of the shield case body.

Description

Technical Field

[0001] The present invention relates to a sensor device.

[0002] This application claims priority from Korean Patent Application No. 10-2024-0033477, filed on March 8, 2024, which is hereby incorporated by reference in its entirety. Background Art

[0003] As an example of a sensor device, an ultrasonic sensor is a sensor that generates a high-frequency sound of approximately 20kHz or higher and measures the time difference between the sound reflected by an object and the sound returned to indicate the distance or the presence of an obstacle. It is suitable for various systems such as distance measurement systems, obstacle sensing systems, and snow accumulation sensing systems.

[0004] Such an ultrasonic sensor has a structure in which a voltage is applied to an oscillator (transducer) to generate ultrasonic waves, and a voltage is generated by receiving the sound waves that are reflected and returned by an object.

[0005] Figure 1 This is a cross-sectional view showing a conventional ultrasonic sensor.

[0006] Reference Figure 1 A conventional ultrasonic sensor 1 includes a housing 3 , an oscillator 2 housed in the housing 3 , a substrate 4 , and a filler 5 made of epoxy material filling the housing 3 .

[0007] As shown in the figure, after the oscillator 2 and substrate 4 are installed inside the housing 3, an epoxy filler is filled inside the housing 3 to prevent water and vibration and to prevent the substrate from rotating. At this time, the filler is filled to a height that not only submerges the oscillator 2 but also submerges at least half of the substrate 4.

[0008] When the filler 5 surrounds the substrate 4 , there is a disadvantage that the substrate 4 needs to be separately UV-coated to prevent damage or failure of components mounted on the substrate 4 due to shrinkage and expansion of the filler.

[0009] Furthermore, there is a disadvantage that even if UV coating is not performed on the inside, there are limitations on the appearance design in order to provide an additional filling structure.

[0010] Furthermore, the filler is formed to surround the circuit board, and the housing is formed of a single body. Therefore, if a problem occurs in the circuit board, the sensor cannot be disassembled and the sensor itself must be discarded.

[0011] Furthermore, as a method for shielding inverter noise generated in the oscillator 2 from flowing into the substrate 4 , the oscillator has conventionally been surrounded by a thin copper sheet and connected to the oscillator 2 or the substrate 4 by soldering.

[0012] In such a noise shielding structure, the lower end of the noise shielding sheet surrounding the substrate 4 is still open, so the inverter noise from the oscillator 2 still flows into the substrate 4 through the lower end of the opening. Summary of the Invention

[0013] The present invention is made in order to improve the above-mentioned problems.

[0014] In order to achieve the above-mentioned purpose, the sensor device of an embodiment of the present invention includes: an oscillator, which generates and transmits a signal for sensing; a main board, which is electrically connected to the above-mentioned oscillator and is equipped with a control chip for parsing and processing the signal transmitted from the above-mentioned oscillator; a cover, which accommodates the above-mentioned oscillator; a shell, which accommodates the above-mentioned main board, and the above-mentioned cover is inserted and coupled to one end of the shell; a shielding cover body, which surrounds at least a portion of the above-mentioned main board to shield the inflow of noise; and a waterproof gasket, which is sandwiched between the rear end of the above-mentioned cover and the front end of the above-mentioned shielding cover body.

[0015] The sensor device of the present invention further includes a shield cover support formed at the rear end of the shield cover body to prevent the rear end of the shield cover body from directly contacting the housing.

[0016] The sensor device of the present invention further includes a shielding tape that surrounds the outer peripheral surface of the shield cover body and prevents the outer peripheral surface of the shield cover body from directly contacting the inner peripheral surface of the housing.

[0017] The shielding tape is characterized in that it is formed to a size that covers the outer peripheral surface of the shield cover support.

[0018] The shielding tape is characterized in that it is formed to have a size that covers at least a portion of the outer peripheral surface of the waterproof gasket.

[0019] The characteristic is that the above-mentioned cover includes: a cylindrical cover body, which accommodates the above-mentioned oscillator inside; a mounting protrusion, which extends radially inward from the front end of the above-mentioned cover body; and a waterproof cover, which is bent from the end of the above-mentioned mounting protrusion toward the axial rear side of the above-mentioned cover body, the edge of the front surface of the above-mentioned oscillator is placed on the above-mentioned mounting protrusion, and the above-mentioned waterproof cover is tightly attached to the front surface of the above-mentioned oscillator.

[0020] The oscillator is characterized in that the oscillator includes an outer shell made of conductive material, and the rear surface of the outer shell is in contact with the front end of the shielding cover body.

[0021] The sensor device of the present invention also includes: a connector plug, which is inserted into the rear side of the above-mentioned shell, and the above-mentioned connector plug includes: a cylindrical plug body, which includes a front surface from which multiple terminal bosses extend and an open rear surface, multiple mounting ribs, which extend from the edge of the front surface of the above-mentioned plug body and are arranged separately in the circumferential direction of the above-mentioned plug body; and a hook, which extends from the edge of the front surface of the above-mentioned plug body and is arranged between adjacent multiple mounting ribs.

[0022] The characteristic feature is that the hooks are formed in pairs at positions facing each other.

[0023] The invention is characterized in that a hook groove is formed on the inner peripheral surface of the housing, and the hook is caught in the hook groove.

[0024] The characteristic is that the above-mentioned multiple mounting ribs include a first mounting rib and a second mounting rib extending from positions opposite to each other and having different lengths, a mounting protrusion is protruding from the rear end of the above-mentioned mainboard, and the above-mentioned first mounting rib and the second mounting rib are placed on the mounting protrusion, and the above-mentioned mounting protrusion includes a first mounting protrusion and a second mounting protrusion with different protruding lengths.

[0025] The characteristic is that the longer mounting rib among the first mounting rib and the second mounting rib is placed on the shorter mounting protrusion among the first mounting protrusion and the second mounting protrusion, and the shorter mounting rib among the first mounting rib and the second mounting rib is placed on the longer mounting protrusion among the first mounting protrusion and the second mounting protrusion.

[0026] The characterizing feature is that the shell includes: a lower shell, which accommodates at least a portion of the above-mentioned main board; an upper shell, which accommodates the remaining portion of the above-mentioned main board; and a connector, which is inserted into the rear end of the above-mentioned lower shell and the front end of the above-mentioned upper shell, and a substrate guide groove is formed on the inner peripheral surface of the above-mentioned connector to guide the insertion of the above-mentioned main board.

[0027] The feature is that the substrate guide grooves are formed at positions facing each other on the inner peripheral surface of the coupler.

[0028] The sensor device according to the embodiment of the present invention having the above-described structure has the following effects.

[0029] First, there is no need to fill the interior of the housing with silicone resin for waterproofing and shockproofing, which has the advantage of improving product productivity.

[0030] Secondly, the inner peripheral surface of the coupler is provided with a guide structure for guiding the insertion of the circuit board. This has the advantage that the circuit board can be inserted into the correct position and is not rotated by external force.

[0031] Third, a hook is formed on the protruding portion of the connector plug, and a hook groove for receiving the hook is formed on the inner peripheral surface of the upper housing, thereby preventing the connector plug from being over-inserted when inserting a five-pin cable, thereby preventing the motherboard from being pushed away.

[0032] Fourth, the oscillator and the shielding member are in direct contact, and the ground line extending from the oscillator is connected to the main board. Therefore, there is an advantage that there is no need to connect the shielding member to the main board for shielding noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a cross-sectional view showing a conventional ultrasonic sensor.

[0034] Figure 2 It is a perspective view of a sensor device according to an embodiment of the present invention.

[0035] Figure 3 It is an exploded perspective view of the sensor device.

[0036] Figure 4 It is along Figure 2 4-4 is a longitudinal cross-sectional view of the sensor device.

[0037] Figure 5 yes Figure 4 Magnified view of part A.

[0038] Figure 6 This is a cutaway perspective view of the cover that constitutes the sensor module.

[0039] Figure 7 It is a longitudinal sectional view of a shield member constituting the sensor device according to the embodiment of the present invention.

[0040] Figure 8 This is a perspective view of a connector plug constituting the sensor device according to the embodiment of the present invention.

[0041] Figure 9 It is along Figure 8 9-9 is a longitudinal cross-sectional view of the connector plug cut away.

[0042] Figure 10 It is along Figure 8 A cross-sectional view of a connector plug cut through 10-10.

[0043] Figure 11 It is a partially enlarged cross-sectional view showing the coupled state of the connector plug and the main board.

[0044] Figure 12 yes Figure 4 Magnified view of part B.

[0045] Figure 13This is a perspective view of a coupler constituting a sensor device according to an embodiment of the present invention.

[0046] Figure 14 It is along Figure 13 14-14 is a cross-sectional view of the cut connector. DETAILED DESCRIPTION

[0047] Hereinafter, a sensor device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0048] Figure 2 is a perspective view of a sensor device according to an embodiment of the present invention, Figure 3 is an exploded perspective view of the sensor device. Figure 4 It is along Figure 1 4-4 is a longitudinal cross-sectional view of the sensor device.

[0049] Reference Figures 2 to 4 The sensor device 10 according to the embodiment of the present invention generally includes a sensing module 20 and a control module 30 .

[0050] Specifically, the sensor module 20 includes an oscillator 22 that generates ultrasonic waves, a cover 21 that houses the oscillator 22, and a cable 23 extending from the oscillator 22. A signal line and a ground line are housed within the cable 23. These signal and ground lines are soldered to a mainboard 34, described later.

[0051] More specifically, the front surface of the cover 21 is opened to expose the front surface of the oscillator 22 to the outside, thereby releasing the sensing signal generated by the oscillator 22 to the outside and receiving the signal reflected by the target object.

[0052] Here, an ultrasonic sensor including an oscillator 22 that generates ultrasonic waves is described as an example of the sensor device 10 . However, the concept of the present invention should not be interpreted as being limited to the name of the oscillator 22 .

[0053] That is, the oscillator 22 serves as a sensing signal generating unit that generates a sensing signal, and may include other units in addition to an ultrasonic generator. For example, in the case of an electrostatic capacitance proximity sensor, the capacitor electrode plate or probe may be defined as the oscillator, and in the case of an infrared sensor, the infrared transceiver including an infrared emitting unit and a receiving unit may be defined as the oscillator.

[0054] Therefore, the oscillator 22 described in this specification is not limited to a signal generating unit that generates ultrasonic waves, but should be defined and interpreted as a sensing signal transceiver that covers all signal transceiver units that generate and receive signals for sensing.

[0055] The control module 30 includes a lower housing 31, an upper housing 32, and a connector 33 connecting the lower housing 31 and the upper housing 32. The combination of the lower housing 31, the upper housing 32, and the connector 33 is defined as a housing that forms the exterior of the control module 30. Furthermore, the housing may be formed of a single cylindrical body, in addition to being formed by the lower housing 31, the upper housing 32, and the connector 33.

[0056] The control module 30 further includes a seal ring 36 mounted on the outer circumference of the coupler 33. The seal ring 36 may include a lower seal ring 361 in close contact with the inner circumference of the lower housing 31 and an upper seal ring 362 in close contact with the inner circumference of the upper housing 32.

[0057] In addition, the control module 30 further includes a mainboard 34 inserted into the housing, a connector plug 37 coupled to an upper end of the mainboard 34 , and a shielding member 35 surrounding at least a portion of the mainboard 34 to shield against noise.

[0058] A plurality of electrical components are mounted on the front surface (or upper surface) of the mainboard 34. The plurality of electrical components may include one or more light emitting elements and a control chip for analyzing and processing the signal transmitted from the oscillator 22.

[0059] The shielding member 35 is used to shield the mainboard 34 from inductive noise that enters from outside the sensor device 10. Specifically, the shielding member 35 includes a cylindrical shield body 351 made of a conductive material; a waterproof gasket 352 coupled to one end of the shield body 351; a shield support 354 coupled to the other end of the shield body 351; and a shielding tape 353 surrounding the outer circumference of the shield body 351.

[0060] The waterproof gasket 352 may include a rubber ring for shockproofing and waterproofing. The waterproof gasket 352 is tightly attached to the rear end of the cover 21, thereby preventing moisture from penetrating between the outer peripheral surface of the cover 21 and the inner peripheral surface of the lower shell 31 and flowing into the side of the main board 34.

[0061] The shielding tape 353 is provided to prevent the inner circumference of the lower housing 31 and the outer circumference of the shield cover body 351 from directly contacting each other and causing a short circuit.

[0062] The shield cover support member 354 is provided to prevent the other end of the shield cover body 351 from directly contacting the lower housing 31 and causing a short circuit.

[0063] On the other hand, the control module 30 further includes an auxiliary sheet 38 , which is disposed behind the main board 34 to protect circuit components mounted on the main board 34 .

[0064] On the other hand, the connector 33 includes a transparent or translucent plastic material, and light emitted from the light emitting element including the light emitting diode mounted on the main board 34 can be recognized by the user's eyes through the connector 33 .

[0065] Figure 5 yes Figure 4 An enlarged view of part A of Figure 6 This is a cutaway perspective view of the cover that constitutes the sensor module.

[0066] Reference Figure 5 and Figure 6 The sensor device 10 according to the embodiment of the present invention is characterized in that it is not necessary to fill the interior of the lower housing 31 with epoxy resin for moisture and shock proofing, but rather provides a moisture and shock proof unit in a different form.

[0067] As a means for achieving this, first, the structure of the cover 21 that houses the oscillator 22 is improved.

[0068] Specifically, the above-mentioned cover 21 provided in the sensor device 10 of an embodiment of the present invention includes: a cylindrical cover body 211; a shell mounting protrusion 214, which protrudes radially outward from one end (front end) of the above-mentioned cover body 211; an oscillator mounting protrusion 212, which protrudes radially inward from one end of the above-mentioned cover body 211; a waterproof cover 213, which protrudes from the end of the above-mentioned oscillator mounting protrusion 212 parallel to the above-mentioned cover body 211; and a plurality of waterproof ribs 215, which surround the outer peripheral surface of the above-mentioned cover body 211.

[0069] The inner diameter of the cover body 211 is formed to a size corresponding to the outer diameter of the oscillator 22 , and the inner peripheral surface of the cover body 211 is in close contact with the outer peripheral surface of the oscillator 22 .

[0070] In addition, when the cover 21 is inserted into one end (front end) of the lower housing 31 , the end of the lower housing 31 is in close contact with the housing mounting protrusion 214 to achieve position fixation, thereby preventing moisture from penetrating for the first time.

[0071] Furthermore, when the cover 21 is inserted into the lower housing 31, the plurality of waterproof ribs 215 firmly adhere to the inner circumferential surface of the lower housing 31, thereby further preventing moisture from penetrating the gap between the cover 21 and the lower housing 31. Furthermore, the friction or adhesion between the plurality of waterproof ribs 215 and the lower housing 31 prevents the cover 21 from being pushed forward of the lower housing 31 and falling off.

[0072] In addition, when the oscillator 22 is inserted into the cover body 211 , the waterproof cover 213 is tightly attached to the edge of the front surface of the oscillator 22 , thereby preventing moisture from penetrating between the cover body 211 and the oscillator 22 .

[0073] Oscillator 22 comprises an outer shell made of a conductive material, including metal; a piezoelectric element disposed within the outer shell to generate ultrasonic vibrations; and polyurethane foam filling the outer shell to surround the piezoelectric element. Specifically, the outer shell is formed into a U-shaped shape with an open front surface, and the polyurethane foam is filled within the outer shell. The material filling the outer shell may also be other materials, such as polyurethane.

[0074] Furthermore, when the oscillator 22 is inserted into the cover 21, the waterproof cover 213 applies pressure to the front surface of the oscillator 22. As a result, a portion of the front surface of the oscillator 22 in contact with the waterproof cover 213 is recessed to surround the waterproof cover 213, thereby preventing moisture from penetrating the contact portion between the cover 21 and the oscillator 22.

[0075] On the other hand, a stopper protrusion 311 is protruding from the inner circumferential surface of the lower housing 31 to set an insertion limit of the shielding member 35 , thereby preventing the shielding member 35 from being pushed away and excessively inserted into the lower housing 31 .

[0076] Figure 7 It is a longitudinal sectional view of a shield member constituting the sensor device according to the embodiment of the present invention.

[0077] Reference Figure 7 As described above, in the shielding member 35 constituting the sensor device 10 , the cylindrical shield cover body 351 surrounds at least a portion of the main board 34 , thereby preventing noise from penetrating into the main board 34 through the lower housing 31 .

[0078] Specifically, the shielding cover body 351 includes: a cylindrical portion 3511; a mounting protrusion 3514 formed at one end (front end) of the cylindrical portion 3511; and a contact sleeve 3513 extending from the inner edge of the mounting protrusion 3514 toward the axial direction of the cylindrical portion 3511.

[0079] The waterproof gasket 352 is installed on the installation protrusion 3514 , and the waterproof gasket 352 is in close contact with the outer edge of the oscillator 22 , thereby again preventing moisture flowing from the cover 21 and the oscillator 22 from penetrating into the interior of the shielding component 35 .

[0080] Furthermore, the contact sleeve 3513 contacts the rear end of the outer shell of the oscillator 22, and the rear end of the shield member 35 is caught by the stopper protrusion 311, thereby preventing the oscillator 22 from being pushed backward. Furthermore, the cable 23 extending from the oscillator 22 is soldered to the main board 34. With this structure, noise intruding through the oscillator 22 flows directly through the oscillator 22 housing and the shield cover body 351, thereby eliminating the need for a ground wire to connect the shield cover body 351 and the main board 34.

[0081] On the other hand, a tapered portion 3512 is formed on the inner circumferential surface of one end of the cylindrical portion 3511 to connect the inner end of the cylindrical portion 3511 and the inner end of the contact sleeve 3513 .

[0082] In addition, the other end (rear end) of the cylindrical portion 3511 is combined with the annular shield cover support 354 so that the rear end of the shield cover body 351 does not directly contact the stop protrusion 311 of the lower shell 31, thereby preventing the occurrence of short circuit.

[0083] In addition, the shielding tape 353 is a tape made of an insulating material, which prevents the outer peripheral surface of the shield cover body 351 from directly contacting the inner peripheral surface of the lower housing 31 and causing a short circuit.

[0084] Furthermore, the shielding band 353 is formed to a length sufficient to completely surround the outer circumference of the shield cover body 351 and the shield cover support member 354, with the rear end of the shielding band 353 being aligned with the rear end of the shield cover support member 354. This advantageously eliminates the need for a connecting unit for connecting the shield cover body 351 and the shield cover support member 354.

[0085] Furthermore, the shielding tape 353 may be sized to surround only a portion of the outer circumference of the waterproof gasket 352. Specifically, the waterproof gasket 352 may be compressed during assembly, so when the shielding tape 353 completely surrounds the waterproof gasket 352, wrinkles may form on the shielding tape 353. Therefore, the shielding tape 353 may only surround a portion of the waterproof gasket 352.

[0086] Alternatively, the shielding tape 353 may not cover the waterproof gasket 352. That is, the length of the shielding tape 353 is set so that the front end of the shielding tape 353 is aligned with the front end of the shield case body 351.

[0087] Figure 8 is a perspective view of a connector plug constituting a sensor device according to an embodiment of the present invention, Figure 9 It is along Figure 89-9 is a longitudinal cross-sectional view of the cutout connector plug, Figure 10 It is along Figure 8 A cross-sectional view of a connector plug cut through 10-10.

[0088] Reference Figures 8 to 10 The connector plug 37 of the sensor device 10 constituting an embodiment of the present invention includes: a cylindrical plug body 371, whose front surface (or bottom) is sealed and whose rear surface (or upper surface) is open; a plurality of terminal bosses 372 extending from the above-mentioned front surface; mounting ribs extending from the edge of the above-mentioned front surface; and hooks 375 extending from the edge of the above-mentioned front surface.

[0089] The mounting ribs may include a first mounting rib 373 and a second mounting rib 374 formed on opposite sides of the first mounting rib 373. The first mounting rib 373 and the second mounting rib 374 may extend to different lengths. For example, the first mounting rib 373 may be longer than the second mounting rib 374.

[0090] The hook 375 may include a pair of hooks formed on opposite sides of each other, and the pair of hooks may extend between adjacent mounting ribs.

[0091] The terminal boss 372 may be formed to be connected to the terminal or pin P (see FIG. Figure 12 ), the terminals or pins P are soldered to the main board 34 through the terminal bosses 372.

[0092] Figure 11 It is a partially enlarged cross-sectional view showing the coupled state of the connector plug and the main board.

[0093] Reference Figure 11 A mounting protrusion is provided at the rear end (or upper end) of the mainboard 34, capable of contacting the mounting ribs. The mounting protrusion may include a first mounting protrusion 345, which contacts the first mounting rib 373, and a second mounting protrusion 346, which contacts the second mounting rib 374. Furthermore, the height of the first mounting protrusion 345 may be smaller than the height of the second mounting protrusion 346.

[0094] With such a structure, when the connector plug 37 is inserted in the wrong direction with the second mounting rib 374 facing the first mounting protrusion 345 and the first mounting rib 373 facing the second mounting protrusion 346, the connection of the connector plug 37 cannot be achieved well, so that the user can identify the assembly error.

[0095] Figure 12 yes Figure 4 Magnified view of part B.

[0096] Reference Figure 12 The upper housing 32 includes a housing body 321 and a housing neck 322 extending from a rear end of the housing body 321 .

[0097] Specifically, the housing neck 322 extends with a diameter smaller than that of the housing body 321, and the connector plug 37 is inserted into the housing neck 322. The upper hook 333 of the coupler 33 is coupled to the interior of the housing body 321.

[0098] Furthermore, the housing neck portion 322 has a hook groove 3221 formed on its inner circumference and a thread 3222 formed on its outer circumference. When the connector plug 37 is inserted into the housing neck portion 322, the hook 375 of the connector plug 37 is engaged with the hook groove 3221. This provides the advantage that when a cable is connected by inserting it into the rear end of the connector plug 37, even if excessive insertion force is applied to the connector plug 37, the motherboard 34 will not be pushed forward.

[0099] Figure 13 is a perspective view of a connector constituting a sensor device according to an embodiment of the present invention. Figure 14 It is along Figure 13 14-14 is a cross-sectional view of the cut connector.

[0100] Reference Figure 13 and Figure 14 The coupler 33 constituting the sensor device of the embodiment of the present invention includes: a cylindrical coupler body 331; a plurality of hooks 332 extending from the front end (or lower end) of the coupler body 331; dividing ribs 337 protruding from the outer circumference of the coupler body 331; and a substrate guide groove 334 recessed into the inner circumference of the coupler body 331. The substrate guide groove 334 extends from one end (front end) to the other end (rear end) of the coupler body 331.

[0101] Furthermore, the rear end of the lower housing 31 is in close contact with the front surface of the dividing rib 337, and the front end of the upper housing 32 is in close contact with the rear surface of the dividing rib 337, with the upper surface of the dividing rib 337 exposed to the outside. With this structure, light emitted from the light-emitting element mounted on the main board 34 is released to the outside through the dividing rib 337, thereby being visible to the user.

[0102] Specifically, the coupler 33 is made of a light-transmitting material, and the dividing ribs 337 surround the outer circumference of the coupler body 331 in a circular band shape. Therefore, light emitted from the light-emitting element 343 is released to the outside through the entire upper surface of the circular dividing ribs 337. Therefore, the dividing ribs 337 can be recognized as light surrounding the outer circumference of the sensor device 10 in a circular band shape.

[0103] Specifically, the dividing rib 337 may be formed at a position separated from the front and rear ends of the coupler body 331. As an example, the dividing rib 337 may be formed at a position separated from the front and rear ends of the coupler body 331 by the same distance, but is not limited thereto.

[0104] A lower sealing ring groove 336 for sandwiching the lower sealing ring 361 is formed on the outer circumferential surface of the coupling body 331 between the dividing rib 337 and the front end of the coupling body 331. An upper sealing ring groove 335 for sandwiching the upper sealing ring 362 is formed on the outer circumferential surface of the coupling body 331 between the dividing rib 337 and the rear end of the coupling body 331.

[0105] On the other hand, the substrate guide grooves 334 are formed at opposing positions on the inner circumferential surface of the connector body 331. The two end portions of the main board 34 are inserted into the pair of substrate guide grooves 334, guiding the main board 34 to be smoothly inserted into the interior of the lower housing 31 and preventing the main board 34 from rotating about the central axis of the lower and upper housings 31 and 32.

Claims

1. A sensor device, characterized in that: It includes: an oscillator that generates and transmits a signal for sensing; a mainboard, which is electrically connected to the oscillator and is equipped with a control chip for analyzing and processing the signal transmitted from the oscillator; a cover for housing the oscillator; a housing for housing the mainboard, wherein the cover is inserted and coupled to one end of the housing; a shielding cover body, which surrounds at least a portion of the mainboard to shield against inflow of noise; and A waterproof gasket is sandwiched between the rear end of the cover and the front end of the shield case body.

2. The sensor device according to claim 1, wherein The sensor device further comprises: The shield cover support is formed at the rear end of the shield cover body and prevents the rear end of the shield cover body from directly contacting the housing.

3. The sensor device according to claim 2, characterized in that The sensor device further comprises: The shielding tape surrounds the outer peripheral surface of the shield cover body and prevents the outer peripheral surface of the shield cover body from directly contacting the inner peripheral surface of the housing.

4. The sensor device according to claim 3, characterized in that The shield tape is formed to have a size that covers the outer peripheral surface of the shield cover support.

5. The sensor device according to claim 3, characterized in that The shielding tape is formed to have a size that covers at least a portion of the outer peripheral surface of the waterproof gasket.

6. The sensor device according to claim 1, wherein The above cover includes: a cylindrical cover body housing the oscillator; a mounting protrusion extending radially inward from the front end of the cover body; and The waterproof cover is bent from the end of the mounting protrusion toward the rear side of the cover body in the axial direction. The edge of the front surface of the oscillator is placed on the mounting protrusion. The waterproof cover is tightly attached to the front surface of the oscillator.

7. The sensor device according to claim 1, wherein The oscillator comprises an outer shell made of a conductive material. The rear surface of the outer shell contacts the front end of the shield case body.

8. The sensor device according to claim 1, wherein The sensor device further comprises: A connector plug, which is inserted into the rear side of the above housing, The above connector plug includes: The plug body is cylindrical in shape and includes a front surface on which a plurality of terminal bosses extend and an open rear surface. a plurality of mounting ribs extending from an edge of the front surface of the plug body and spaced apart in a circumferential direction of the plug body; and The hook extends from the edge of the front surface of the plug body and is disposed between adjacent mounting ribs.

9. The sensor device according to claim 8, characterized in that The hooks are formed in pairs at positions facing each other.

10. The sensor device according to claim 8, characterized in that A hook groove is formed on the inner peripheral surface of the housing, and the hook is caught in the hook groove.

11. The sensor device according to claim 8, characterized in that The plurality of mounting ribs include a first mounting rib and a second mounting rib extending from opposite positions and having different lengths. A mounting protrusion is formed on the rear end of the mainboard, and the first mounting rib and the second mounting rib are placed on the mounting protrusion. The mounting protrusions include a first mounting protrusion and a second mounting protrusion having different protrusion lengths.

12. The sensor device according to claim 11, characterized in that The longer mounting rib of the first mounting rib and the second mounting rib is placed on the shorter mounting protrusion of the first mounting protrusion and the second mounting protrusion. The shorter mounting rib of the first mounting rib and the second mounting rib is placed on the longer mounting protrusion of the first mounting protrusion and the second mounting protrusion.

13. The sensor device according to claim 1, wherein The housing includes: a lower housing for receiving at least a portion of the mainboard; an upper housing for housing the remaining portion of the mainboard; and A connector is inserted into the rear end of the lower housing and the front end of the upper housing. A substrate guide groove for guiding insertion of the main board is formed on the inner peripheral surface of the connector.

14. The sensor device according to claim 13, characterized in that The substrate guide grooves are formed at positions facing each other on the inner peripheral surface of the coupler.

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