CN211335794U

CN211335794U - Device for sensing motion in vehicle

Info

Publication number: CN211335794U
Application number: CN201921939864.4U
Authority: CN
Inventors: 申晟焕; 崔顺英
Original assignee: Lexing Automobile Technology Co ltd
Current assignee: Lexing Automobile Technology Co ltd
Priority date: 2018-11-12
Filing date: 2019-11-12
Publication date: 2020-08-25
Anticipated expiration: 2029-11-12
Also published as: KR102095946B1

Abstract

Disclosed is an apparatus for sensing motion in a vehicle, which senses motion of a person or animal or the like in the vehicle. An apparatus for sensing motion in a vehicle according to an aspect includes: at least one sensor for sensing motion; a housing fixedly mounted to a lower portion of the sensor; a bracket for fixing an upper portion of the sensor fixed to the housing; a substrate which is arranged above the bracket and fixed, is communicated with the connector of the sensor to receive the input of the sensing signal and outputs the input sensing signal to an Electronic Control Unit (ECU) of the vehicle; and a main body fixed to the upper part thereof as a covering structure, the structure being stacked in the order of a case, a holder, and a substrate to which the sensor is fixed, and the device being manufactured by using the respective fixed assembly structures.

Description

Device for sensing motion in vehicle

Technical Field

The present invention relates to motion sensing technology, and more particularly, to a device and method for sensing motion in a vehicle to provide a driver or surroundings with a reminder.

Background

In a state where there is a human or animal in the vehicle which generates a motion, when the driver leaves the driver seat, it is necessary to alert the driver of the human or animal in the vehicle which has sensed the motion.

As a means for sensing the motion inside the vehicle, there are conventional technical applications such as a camera, a radar, an infrared ray, and the like. However, technical difficulties such as current consumption, price, sensing range, and radio-wave human body harmlessness have not been solved, and there is no case of practical production.

As similar products for vehicle-related motion sensing, there are products for theft prevention such as UIP, IMS, ATAS, but the installation locations and sensing algorithms of the products are different.

In a device for sensing an indoor operation of a vehicle, an open-type ultrasonic sensor member is generally fixed to a cylindrical structure in order to be aligned at an angle of directivity for optimum performance. In order to fix the sensor to the cylindrical structure, a sensor holder, which is an additional mechanism structure, is used as a medium, and the sensor fixed to the sensor holder is connected to the circuit board by a connector for a wire harness, thereby completing the above-described device.

Here, the ultrasonic sensor unit for sensing the operation is composed of at least one receiving-side ultrasonic sensor and one transmitting-side ultrasonic sensor, and the number of receiving-side sensors or transmitting-side sensors needs to be added for sensing performance. Then, a sensor holder member for fixing each ultrasonic sensor to be added is also required as a medium for fixing the sensor in the manufacturing process of a general device, and the additional member is required.

In the case of the open-type ultrasonic sensor, an assembly structure using the sensor holder as a medium is complicated for a fixing structure of the sensor and the cylindrical structure. This is because the sensor holder is assembled with the device and manufactured after the sensor is accommodated in the sensor holder. When it is directly applied to a vehicle, there is a problem that the product cost is increased due to the complexity of the product manufacturing process of the assembly structure of the sensor holder supporting the sensor and the sensor holder and the assembly structure of the sensor holder accommodating the sensor and the cylinder structure.

Documents of the prior art

Patent document

Patent document 1: korean granted patent No. 10-0664782(2006.12.27)

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a device for eliminating the complexity of manufacturing process by directly assembling an ultrasonic sensor to a housing fixed to a cylindrical structure and then fixing the ultrasonic sensor to a holder between the sensor and a substrate.

In addition, the device adopts a detachable fastening mode instead of a threaded fastening mode for the shell, the bracket and the substrate which are directly assembled with the sensor in the manufacturing process, thereby simplifying the manufacturing process.

According to an aspect, there is provided an apparatus for sensing motion within a vehicle, the apparatus comprising: at least one more sensor that senses the motion; a housing mounted with the sensor and fixing a lower portion of the sensor; a bracket that fixes an upper portion of the sensor fixed to the housing; a substrate fixed above the bracket, wherein the substrate is connected with the connector of the sensor to receive the input of the sensing signal and output the input sensing signal to an Electronic Control Unit (ECU) of the vehicle; and a main body fixed to an upper portion thereof as a cover structure, the structure being stacked in the order of a case, a holder, and a substrate to which the sensor is fixed, the apparatus being manufactured by using each of the fixed assembly structures.

The sensors are ultrasonic sensors that sense the motion of the x-axis, y-axis, and z-axis, respectively.

The sensor is manufactured by the assembly structure directly abutting against a fixing portion formed on the top surface of the housing and a fixing portion formed on the bottom surface of the holder.

The housing is formed with a cylindrical concave cone to enable fixed individual sensors to sense at pointing angle.

In order to install the sensor in the inner and prevent the fixed structure of the fore-and-aft movement, the said body forms the first fixed part of the shape of projection that is abutted against the front of the said sensor and abutted against the back of the said sensor and forms the space used for the said installation, in order to install the said sensor in the inner and prevent the said fixed structure of left-and-right movement, the said body forms the third fixed part of the shape of sidewall that is abutted against the left side of the said sensor and the fourth fixed part of the shape of sidewall that is abutted against the left side of the said sensor and forms the space used for the said installation.

The bracket has a fixing cover portion formed on a bottom surface thereof for fixing an upper outer contour of the sensor.

The apparatus further includes a bolt inserted and fastened to fix the structure.

The device further comprises: a wire harness accommodating a cable of a sensor between the sensor and the substrate; and a guide for preventing the wiring harness of the sensor from moving at one side of the bracket.

The guide is formed of a rectangular or arc-shaped elastic body having an accommodating space for the wire harness therein, and detachably fixes the wire harness inserted into the accommodating space.

According to another embodiment of the present invention, there is provided an apparatus for sensing motion in a vehicle, the apparatus including: at least one more sensor that senses the motion; a housing mounted with the sensor and fixing a lower portion of the sensor; a bracket for fixing the upper part of the sensor fixed on the shell and detachably fixing the sensor on the shell; a substrate which is arranged above the bracket and is fixed in a detachable way, is communicated with the connector of the sensor to receive the input of the sensing signal and outputs the input sensing signal to an Electronic Control Unit (ECU) of the vehicle; and a main body fixed to an upper portion thereof as a cover structure, the structure being stacked in the order of a case, a holder, and a substrate to which the sensor is fixed, the apparatus being manufactured by using each of the fixed assembly structures.

According to an aspect of the present invention, a sensor sensing an action in a vehicle is manufactured by directly fixing to a device without an additional medium, thereby having an effect of manufacturing a reduced part and a simplified manufacturing process.

In addition, the housing is integrated with the bracket and the base plate by a detachable fastening structure instead of a screw fastening method, so that the manufacturing process of the manufacturing component is simplified.

Drawings

The following drawings attached to the present specification illustrate preferred embodiments of the present invention by way of example, and together with the detailed description of the invention given below serve to further understand the technical idea of the present invention, and the present invention should not be construed as being limited to the items shown in the drawings.

Fig. 1 is an illustration of a state in which a device according to an embodiment of the present invention is mounted in a vehicle.

Fig. 2 is an explanatory view of an exploded state of the apparatus of fig. 1.

Fig. 3a to 3c are explanatory views of an assembly structure in which the sensor of fig. 2 is fixed to a housing.

Fig. 4a to 4e are explanatory views of an assembly structure in which the holder of fig. 2 is fixed to a housing to which the sensor of fig. 3a to 3c is fixed.

Fig. 5a to 5b are views illustrating an assembly structure in which the substrate of fig. 2 is fixed to an assembly of the housing, the sensor, and the holder of fig. 4a to 4 d.

Fig. 6 is an illustration of an assembly structure in which the main body of fig. 2 is fixed to an assembly of the housing, the sensor, the holder, and the substrate of fig. 5a to 5 b.

Fig. 7a to 7c are schematic views of an assembly structure of a housing, a bracket, and a substrate detachably fixed according to another embodiment of the present invention.

Fig. 8 is an illustration of an arcuate guide of yet another embodiment of the present invention.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present invention, the terms and words used in the specification and claims should not be limited to general or dictionary meanings, and should be interpreted based on the meanings and concepts conforming to the technical idea of the present invention on the basis of the principle that the inventor can appropriately define the concept of the terms in order to explain their own utility model in the best way. Therefore, the embodiment described in the present specification and the structure shown in the drawings are merely the most preferable embodiment of the present invention and do not represent all the technical ideas of the present invention, and it should be understood that the present application includes various equivalents and modifications that can replace them.

Fig. 1 is an illustration of a state in which an apparatus 100 according to an embodiment of the present invention is mounted in a vehicle.

The device 100 is mounted to a roof or ceiling within a vehicle. The housing 110 of the device 100 installed in the vehicle interior is exposed to the outside and can be recognized by the naked eye. A cone 111 having a concave conical shape with a pointing angle is formed at the exposed case 110.

The device 100 incorporates at least one sensor 120. The sensor 120 may be an ultrasonic sensor, and the sensing method is not particularly limited. The sensor 120 is located in a position in the housing 110 corresponding to the cone 111 having a pointing angle. The sensor 120 is located at the inner apex of the cone 111, and therefore, is protected from damage, contamination, and the like, and can maintain sensing quality. For reference, three sensors 120 for ultrasonically sensing motion in the x, y, and z axes are illustrated in fig. 1. The sensor 120 senses the forward motion according to the pointing angle.

Hereinafter, it is assumed that the device 100 is mounted on a roof panel of a vehicle. The device 100 senses an operation generated inside the vehicle and outputs the sensed operation to an ECU (Electronic Control Unit). The ECU can output the action information as an A/V reminding signal according to each set reminding item. For example, when the driver opens the driver seat door while sitting on the driver seat, the driver may be notified of a warning signal indicating that the driver is sensing the indoor operation of the vehicle, such as when the driver is sitting down from the driver seat. When a driver leaves the vehicle in a state where a human or an animal is present in the vehicle, an accident may occur when the human or the animal is left in the vehicle for a long time. At this moment, the device 100 of the present invention immediately informs the driver of the alert signal according to each alert item, thereby being able to stop the accident in advance.

Fig. 2 is an exemplary diagram illustrating an exploded state of the apparatus 100 of fig. 1.

The device 100 of an embodiment of the present invention includes a housing 110, a sensor 120, a bracket 230, a substrate 240, and a main body 250.

The housing 110 fixes the sensor 120 and determines a sensing direction of the sensor 120.

The sensor 120 senses motion within the vehicle. In the case of an ultrasonic sensor, an operation is sensed by transmitting and receiving ultrasonic waves.

The bracket 230 fixes the sensor 120 mounted on the housing 110 at the upper side, and fixes the harness 221 of the sensor 120.

The board 240 controls the operation of the sensor 120, determines an operation by receiving an input of a signal from the sensor 120, and outputs the determined signal to the ECU. The connector 222 of the sensor 120 is connected to the connector 242 of the substrate 240.

In order to fix and assemble the housing 110, the fixing hole 112 of the housing 110, the fixing hole of the bracket, and the fixing hole of the substrate are formed at the same position, and the bolt 241 vertically penetrates through and is fastened to the fixing hole 112 of the housing 110 at the position.

The main body 250 is coupled to the case 110 by covering a structure fastened with a bolt 241. The rear surface fixing portion 251 is inserted into the inside of the roof panel of the vehicle, and then the fastened body 250 is installed in the vehicle by pushing the front surface fixing portion 252 of the elastic body. In detaching, the front fixing portion 252 may be pulled out downward in a state of being pushed inward.

Hereinafter, each component and assembly structure of the apparatus 100 will be described.

Fig. 3a to 3c are explanatory views illustrating an assembly structure in which the sensor 120 of fig. 2 is fixed to the housing 110.

Referring to fig. 3a, each sensor 120 is mounted and fixed at the apex position of the cone 111 of the case 110.

Referring to fig. 3b, the housing 110 is formed with a first fixing portion 310 and a second fixing portion 320 as a fixing structure for preventing the sensor 120 from moving forward and backward at a position where a lower portion of the sensor 120 is mounted. In addition, as a fixing structure for preventing the sensor 120 from moving left and right, the housing 110 is formed with a third fixing portion 330 and a fourth fixing portion 340.

The first fixing portion 310 prevents the sensor 120 from being pushed forward (indoor direction). The first fixing portion 310 abutting on the upper portion of the sensor 120 extends to cover the upper portion side of the sensor. In addition, the second fixing portion 320 has a triangular protrusion shape, and the protrusion blocks the lower rear surface of the sensor 120 mounted to the inside to prevent it from being pushed to the rear (inner direction). That is, the lower portion of the sensor 120 that is insert-mounted between the first fixing portion 310 and the second fixing portion 320 is prevented from moving forward and backward and is fixed.

Preferably, the second fixing portion 320 is formed with an inclined portion 321 to maintain the directional angle of the cone 111. That is, the sensor 120 installed inside forms the same pointing angle in the sensing direction by the pointing angle of the inclined portion 321, which coincides with the pointing angle of the cone 111.

The third and fourth fixing

parts

330 and 340 prevent the sensor 120 from moving in the left and right directions. The third and fourth fixing

portions

330 and 340 have a sidewall shape. Then, the first fixing portion 310, the second fixing portion 320, the third fixing portion 330 and the fourth fixing portion 340 form an installation space of the sensor 120.

Referring to fig. 3c, a cross-section of a state where the sensor 120 is mounted and fixed in the mounting space of fig. 3b is shown.

Fig. 4a to 4e are explanatory views showing an assembly structure in which the bracket 230 of fig. 2 is fixed to the housing 110 to which the sensor 120 of fig. 3a to 3c is fixed.

Referring to fig. 4a, the bracket 230 has a bottom surface facing the sensor 120 mounted to the housing 110 and a top surface facing the substrate 240. Fixing holes 112 of the case 110 formed at corresponding positions are fitted and fixed to fixing

holes

431, 432, and 433 of the bracket 230 of the through bolt 241.

Referring to fig. 4b, the bottom surface of the bracket 230 is shown. Fixing

cover portions

434, 435, 436 are formed on the bottom surface of the bracket 230 so as to cover the upper outer contour of the fixed sensor 120. The fixing

cover portions

434, 435, 436 function to fix the upper outer contour of the sensor 120 mounted on the housing 110. One side of the fixing

hood portions

434, 435, 436 has a round collar shape to wrap left and right sides of the top surface of the sensor, respectively. The other side of the fixed

hood parts

434, 435, 436 has a prevention mesa shape to prevent the sensor 120 from being pushed in a rear direction. Further, a corresponding guide 437 is formed on one side surface of the bracket 230 to prevent the wire harness 221 of each sensor 120 from moving.

Referring to fig. 4c, the guide 437 serves to detachably and closely fix the wire harness 221, thereby securing the sensing signal quality. The guide 437 receives the wire harness 221 inserted into the inner space to prevent the wire harness 221 from moving. The guide 437 is not limited to the right-angled shape shown in fig. 4c, and may have various shapes that form an inner receiving space in order to prevent the wire harness 221 from moving.

Referring to fig. 4d and 4e, a cross section of an assembly structure in which the sensor is mounted in a space between the first fixing portion 310 and the second fixing portion 320, and the upper portion of the mounted sensor 120 is covered and fixed by a fixing cover portion 436 is shown.

The lower portion of each sensor 120 is installed between a first fixing portion 310 and a second fixing portion 320 formed at each vertex position of each cone 111 of the case 110. One side of the upper portion of each sensor 120 is attached to the extended portion of the first fixing portion 310, the left and right sides of the top surface of the sensor 120 are fixed in front of the fixing cover portion 436, and the rear end of the upper portion of the sensor 120 is prevented from being pushed in the rear direction of the fixing cover portion 436 by a push prevention stand.

Fig. 5a to 5b are views illustrating an assembly structure in which the substrate 240 of fig. 2 is fixed to an assembly of the housing 110, the sensor 120, and the bracket 230 of fig. 4a to 4 e.

Referring to fig. 5a, the substrate 240 is placed to fit in the four-sided top frame of the frame 230. The bolts 241 are inserted into the fixing holes of the substrates 240 formed at the same positions, the fixing holes 431 to 433 of the bracket 230, and the fixing holes 112 of the housing 110, and are screwed. For reference, the fixing hole 433 of the bracket 230 is fastened to the fixing hole 112 of the case 110 without fixing the substrate 240. Wherein, the position, quantity and the fastening mode of each fixed orifices can be designed and changed in the scope that is used for fixed package assembly, and are not limited to the utility model discloses. The housing 110, the sensor 120, the holder 230, and the substrate 240 are assembled into an integral body by fastening with the bolts 241.

Referring to fig. 5b, in the integrated assembly, the wire harness 221 of each sensor 120 is inserted into the guide 437 of the holder 230 to prevent movement, and the connector 222 of the sensor 120 is connected to the connector 242 of the corresponding substrate 240. By the turn-on, a sensing signal of the sensor 120 is input to the substrate 240.

Fig. 6 is an exemplary view of an assembly structure in which the main body 250 of fig. 2 is fixed to an integral assembly of the housing 110, the sensor 120, the holder 230, and the substrate 240 of fig. 5a to 5 b.

The main body 250 is detachably fitted into the integrated assembly and fastened, thereby completing the assembly of the apparatus 100.

Fig. 7a to 7c are views illustrating an assembly structure of detachably fixing the housing 710, the bracket 730, and the base plate 740 according to another embodiment of the present invention.

Referring to fig. 7a, the screw 241 is removed and the screw assembling process of the screw 241 is removed by detachably fixing the case 710, the holder 730 and the substrate 740. That is, the efficiency is increased by the removal of parts and the removal of assembly processes, compared to the manufacturing cost of the device 100.

Referring to fig. 7b, in order to provide an assembly structure for detachably fixing the housing 710 and the bracket 730, a vertical support tower 711 and an accommodation hole 712 of the support tower 711 are formed in the housing 710, and a protrusion 731 is formed on one side of the bracket 730 at a position corresponding to the accommodation hole 711. Then, at one side in the longitudinal direction, the projection 731 of the bracket 730 is fixed in such a manner as to be inserted into the receiving hole 712 of the support tower 711. The other side is also fixed in the same way.

Referring to fig. 7c, a fixing protrusion 732 is formed on one side of the holder 730 to form an assembly structure for detachably fixing the holder 730 and the substrate 740. Then, the substrate 740 is inserted so as to be covered with the fixing projections 732 at one side in the longitudinal direction, and is fixed so as to prevent the external separation. The other side is also fixed in the same way.

Fig. 8 is an illustration of an arc-shaped guide 837 according to yet another embodiment of the present invention.

The guide 437 of fig. 4c has a right-angled shape, and thus the wire harness 221 received inside may be dropped. When the wire harness 221 falls off from the guide 437 due to weak fixing force in a state of being accommodated in the guide 437, noise may be generated and sensing signal quality may be degraded.

In contrast, the arc-shaped guide 837 of still another embodiment of the present invention shown in fig. 8 is fixed to the bracket 230 at one side and can be elastically opened from the bracket 230 at the other side. The other side of the opening is applied with a force to be returned to the original position by an elastic restoring force, and the force of the applied restoring force acts as a fixing force on the wire harness 221 accommodated in the guide 837. That is, the wire harness 221 detachably inserted into the inner accommodating space is closely attached to the arc-shaped inner surface of the guide 837 by the elastic restoring force thereof due to the elasticity of the other side open space, thereby maintaining a stronger fixing force.

Although the present invention has been described with respect to a limited number of embodiments and drawings, the present invention is not limited thereto, and various modifications and variations can be made by those having ordinary knowledge in the art to which the present invention pertains within the scope of the technical idea of the present invention and the equivalent scope of the claims of the present application.

Claims

1. An apparatus for sensing motion within a vehicle, the apparatus comprising:

at least one more sensor that senses the motion;

a housing mounted with the sensor and fixing a lower portion of the sensor;

a bracket that fixes an upper portion of the sensor fixed to the housing;

the substrate is arranged above the bracket and fixed, is communicated with the connector of the sensor to receive the input of a sensing signal, and outputs the input sensing signal to an electronic control unit of a vehicle; and

a main body fixed to a cover structure above, the structure being formed by stacking a case to which the sensor is fixed, a holder, and a substrate in this order,

the device is manufactured by using each of the fixed assembly structures.

2. The apparatus of claim 1,

3. The apparatus of claim 1,

4. The apparatus of claim 1,

5. The apparatus of claim 1,

in order to mount the sensor inside and prevent the fixed structure of the back and forth movement, the housing is formed with a first fixed portion abutting on the front surface of the sensor and a second fixed portion of a convex shape abutting on the rear surface of the sensor to form a space for the mounting,

in order to mount the sensor in the interior and prevent the sensor from moving left and right, the housing is formed with a sidewall-shaped third fixing portion abutting against a left side surface of the sensor and a sidewall-shaped fourth fixing portion abutting against the left side surface of the sensor, thereby forming a space for the mounting.

6. The apparatus of claim 1,

7. The apparatus of claim 1,

8. The apparatus of claim 1,

the device further comprises:

a wire harness accommodating a cable of a sensor between the sensor and the substrate; and

a guide for preventing a wire harness of the sensor from moving at one side of the bracket.

9. The apparatus of claim 8,

10. An apparatus for sensing motion within a vehicle, the apparatus comprising:

at least one more sensor that senses the motion;

a housing mounted with the sensor and fixing a lower portion of the sensor;

a bracket for fixing the upper part of the sensor fixed on the shell and detachably fixing the sensor on the shell;

the substrate is arranged above the bracket and is fixed in a detachable mode, the substrate is communicated with the connector of the sensor to receive the input of the sensing signal, and the input sensing signal is output to an electronic control unit of the vehicle; and

the device is manufactured by using each of the fixed assembly structures.