JP6944338B2 - ISOFIX child seat - Google Patents

Description

The present invention particularly relates to an ISOFIX child seat that is attached when an infant gets on board.

There is a child seat to improve the safety of infants when riding.
In recent years, ISOFIX type child seats have been widely used. This ISOFIX is an international standard for fixing a child seat to an automobile seat, and the child seat body fixed with a conventional vehicle seat belt can be easily and securely attached by connecting it to the ISOFIX anchor of the vehicle. Yes (for example, disclosed in Patent Document 1).

This ISOFIX type child seat is a simple operation, but various fine adjustments are required at the time of installation. FIG. 10 is an explanatory view of the mounting state of the ISOFIX child seat.
That is, first of all, the seat back and the pedestal must be brought into close contact with each other (see (A) in FIG. 10). If the inclination angle of the seat back is large, a gap like an arrow will be created between the seat back and the back of the child seat, and the seat back will not adhere to each other. This is because it cannot be done (see (B) in FIG. 10).

Secondly, the support leg in front of the child seat must be extended to bring the tip into contact with the floor of the seat. If there is a gap between the tip of the support leg and the floor of the seat, the front of the child seat cannot be fixed in a stable state on the floor of the seat, and the child seat will roll forward in the event of sudden braking or a collision. This is because there is a possibility that sufficient safety cannot be ensured.

Japanese Unexamined Patent Publication No. 2013-23032.

However, during the above-mentioned ISOFIX type child seat mounting operation, the ISOFIX mounting portion is latched by only one of a pair or a pair of anchors, the seat back and the pedestal portion are not in close contact with each other, and the tip of the support leg is placed on the floor. There are many cases where the user makes a mistake in mounting, such as not touching the surface. If the child seat is used in such an incorrect manner, the original safety of the child seat cannot be ensured, which may lead to a serious accident.

Therefore, in view of the above-mentioned problems of the prior art, it is an object of the present invention to provide an ISOFIX child seat capable of safely attaching the ISOFIX child seat to the seat by preventing the ISOFIX child seat from being erroneously attached.
Another object of the present invention is to provide an ISOFIX child seat that can prevent the ISOFIX child seat from being erroneously attached and can easily and surely attach the ISOFIX child seat to the seat.

As a first means for solving the above problems, the present invention includes a back surface detecting means capable of acquiring back side information between the main body and the seat back of the seat .
The back surface detecting means is a back surface distance sensor or / or a back surface distance sensor that detects any one or more of the distance between the main body and the seat back, the angle of the seat back, and the foreign matter between the main body and the seat back. And the rear camera,
The back side information is to provide an ISOFIX child seat characterized by either a distance between the main body and the seat back, a foreign object, or an angle of the seat back.
According to the first means, it is possible to acquire back side information for surely bringing the seat back and the main body into close contact with each other. Therefore, the user mistakenly installed the seat when the seat angle was not appropriate and the child seat was not in close contact with the back seat, or even if the seat angle was appropriate, the seat back and the main body were forgotten to be attached. The child seat can be safely and securely attached to the seat by preventing the attachment method.
In addition, it is possible to acquire information on any of the distance between the main body and the seat back, the foreign matter, and the angle of the seat back to ensure that the seat back and the main body are in close contact with each other. Therefore, the user mistakenly installed the seat when the seat angle was not appropriate and the child seat was not in close contact with the back seat, or even if the seat angle was appropriate, the seat back and the main body were forgotten to be attached. The child seat can be safely and securely attached to the seat by preventing the attachment method.

As a second means for solving the above-mentioned problems, the present invention comprises an ISOFIX mounting portion capable of moving forward and backward with respect to the main body in the first means.
An ISOFIX drive unit that moves forward and backward in the ISOFIX mounting unit,
An object of the present invention is to provide an ISOFIX child seat including a control unit for driving and controlling the ISOFIX driving unit based on a detection value of the back surface detecting means.
According to the second means, the seat back and the main body can be surely brought into close contact with each other based on the back side information. Therefore, the user mistakenly installed the seat when the seat angle was not appropriate and the child seat was not in close contact with the back seat, or even if the seat angle was appropriate, the seat back and the main body were forgotten to be attached. The child seat can be safely and securely attached to the seat by preventing the attachment method.

As a third means for solving the above-mentioned problems, in the second means, the ISOFIX drive unit is screwed with the feed screw fixed to the ISOFIX mounting portion and the feed screw. The ISOFIX mounting is provided with a nut rotatably fixed to the main body and an ISOFIX drive motor capable of rotating the nut in the forward and reverse directions, and the feed screw is attached to the nut as a base point by the forward and reverse rotation of the drive motor. An object of the present invention is to provide an ISOFIX child sheet, which is characterized in that a unit moves forward and backward.
According to the third means, since the nut following the ISOFIX drive motor is in a self-locking state in which it does not rotate, it can be stopped and fixed at an arbitrary position. Therefore, the main body and the seat back can be brought into close contact with each other, and the structure can be simplified and the weight can be reduced as compared with the case of the manual type of the lock mechanism.

As a fourth means for solving the above-mentioned problems, the present invention presents the present invention in any one of the first to third means, in the case where the back surface detecting means is a back distance sensor, in the vertical direction on the back surface of the main body. It is an object of the present invention to provide an ISOFIX child seat characterized in that at least two or more are attached and the inclination angle of the seat back is detected from the difference between the upper and lower detected values.
According to the fourth means, the inclination angle of the seat back can be easily detected.

As a fifth means for solving the above problems, in the second or third or fourth means dependent on the second , the ISOFIX driving unit moves the ISOFIX mounting unit. It is an object of the present invention to provide an ISOFIX child seat, which comprises an ISOFIX telescopic position sensor for detecting an amount.
According to the fifth means, it can be determined from the detected value whether or not the amount of movement of the lock arm is sufficient for mounting.

As a sixth means for solving the above-mentioned problems, the present invention includes , in any one of the first to fifth means, the main body includes a support leg that expands and contracts toward the floor surface of the seat.
An object of the present invention is to provide an ISOFIX child seat provided with a floor surface detecting means capable of acquiring floor surface side information between the tip of the support leg and the floor surface.
According to the sixth means, it is possible to acquire the floor surface side information for surely bringing the support leg and the floor surface into close contact with each other. Therefore, the child seat can be safely and securely placed in the seat by preventing the user from erroneously installing the child seat, such as when a foreign object is caught between the support leg and the floor surface or when the support leg is installed when the support leg is not in close contact with the floor surface. Can be attached.

As a seventh means for solving the above-mentioned problems, in the sixth means of the present invention, the floor surface detecting means is a distance between the tip of the support leg and the floor surface, the tip of the support leg and the floor surface. A floor distance sensor and / or a floor camera capable of detecting any one or more of foreign objects between floors.
The floor side information is to provide an ISOFIX child seat characterized by a distance between the tip of the support leg and the floor or a foreign object.
According to the seventh means, it is possible to acquire information on the distance between the tip of the support leg and the floor surface for ensuring that the support leg and the floor surface are in close contact with each other, or the floor surface side information of a foreign substance. Therefore, the child seat can be safely and securely placed in the seat by preventing the user from erroneously installing the child seat, such as when a foreign object is caught between the support leg and the floor surface or when the support leg is installed when the support leg is not in close contact with the floor surface. Can be attached.

As an eighth means for solving the above-mentioned problems, the present invention includes a support leg driving unit that expands and contracts the support leg in the sixth or seventh means.
An object of the present invention is to provide an ISOFIX child seat including a control unit for driving and controlling the support leg driving unit based on a detection value of the floor surface detecting means.
According to the eighth means, the support leg and the floor surface can be reliably brought into close contact with each other based on the floor surface side information. Therefore, the child seat can be safely and securely placed in the seat by preventing the user from erroneously installing the child seat, such as when a foreign object is caught between the support leg and the floor surface or when the support leg is installed when the support leg is not in close contact with the floor surface. Can be attached.

As a ninth means for solving the above-mentioned problems, the present invention has the eighth means, in which the support leg driving unit has first and second support members.
A feed screw fixed to the first support member in a state where only rotation is possible about an axis in the feed direction of the screw, a nut screwed with the feed screw and fixed to the second support member, and the feed. The ISOFIX child seat according to claim 8, further comprising a support leg drive motor capable of rotating a screw in the forward and reverse directions, and the second support member is moved forward and backward by the forward and reverse rotation of the support leg drive motor. To do.
According to the ninth means, the expansion and contraction operation of the support leg can be automated without relying on manual operation.

As a tenth means for solving the above-mentioned problems, in the ninth means, the support leg driving unit provides a support leg telescopic position sensor capable of detecting the movement amount of the second support with respect to the first support. The purpose is to provide an ISOFIX child seat characterized by being provided.
According to the tenth means, it can be determined from the detected value whether or not the amount of movement of the support leg is sufficient for mounting.

As an eleventh means for solving the above-mentioned problems, the present invention is in any one of the third to tenth means subordinate to the second and the second , the main body is a seating sensor for detecting the presence or absence of an infant. With
The control unit provides an ISOFIX child seat characterized in that the ISOFIX drive unit is driven and controlled based on a detection signal in which an infant is not on board by the seating sensor.
According to the eleventh means, it is possible to prevent the child seat from being attached while the infant is on board. Therefore, the safety of the mounting operation is enhanced, and the mounting can be performed easily and reliably.

As a twelfth means for solving the above-mentioned problems, the present invention provides , in any one of the first to eleventh means, a communication means capable of transmitting an image of the main body attached by the rear camera to an external service center. The purpose is to provide an ISOFIX child seat characterized by being provided.
According to the twelfth means, it is possible to grasp and instruct the installation state of the child seat attached by the user at the service center.

According to the present invention, it is possible to prevent the user from erroneously attaching the ISOFIX child seat, and to safely and reliably attach the ISOFIX child seat to the seat.

It is a block diagram of the ISOFIX child seat of this invention. It is a 1st processing flow chart of the ISOFIX child seat of this invention. It is a 2nd processing flow chart of the ISOFIX child seat of this invention. It is the schematic explanatory drawing of the ISOFIX child seat of this invention. It is explanatory drawing of the latch sensor. It is explanatory drawing of the seating sensor. It is explanatory drawing of the back surface detecting means. It is explanatory drawing of the ISOFIX drive part and the telescopic position sensor. It is explanatory drawing of a leg drive part and support leg telescopic position sensor. It is explanatory drawing of the attachment state of the ISOFIX child seat.

An embodiment of the ISOFIX child seat of the present invention will be described in detail below with reference to the accompanying drawings.

[ISOFIX child seat 10]
FIG. 4 is a schematic explanatory view of the ISOFIX child seat of the present invention.
First, the seat 1 to which the ISOFIX child seat 10 of the present invention is attached has a seat surface 2 on which the user sits and a seat back 3 connected to the seat surface 2 at an arbitrary inclination angle. An anchor (mounting bracket) 4 for connecting the ISOFIX child seat 10 is provided between the seat surface 2 and the seat back 3. A pair of anchors 4 are attached side by side in a direction crossing the left-right direction of the seat surface 2.

Next, the ISOFIX child seat 10 has a seat portion 16 including a seat surface 12 on which an infant sits, a back surface 14 having a shoulder belt (not shown) for restraining the infant seated on the seat surface 12, and a seat portion 16 on the upper surface. It supports and has a main body 11 including a pedestal portion 18 whose bottom surface is in contact with the seat surface 2 of the seat 1. The main body 11 adopts a structure in which the seat portion 16 and the pedestal portion 18 are either an integrated type or a separate type. The main body 11 further includes a pair of lock arms 20 extending from the back to the seat back 3 side when attached to the seat 1, and a support leg 30 extending from the lower front to the floor surface of the seat 1 ( FIG. 4 shows a structure in which the lock arm 20 extends from the pedestal portion 18 of the main body 11).

FIG. 1 is a block diagram of the ISOFIX child seat of the present invention.
The ISOFIX child seat 10 includes an ISOFIX drive unit 40, a support leg drive unit 60, a main body unit 70, and a control unit 80.

(ISOFIX drive unit 40)
FIG. 8 is an explanatory view of the ISOFIX drive unit and the telescopic position sensor. 5A and 5B are explanatory views of the latch sensor, in which FIG. 5A shows a state in which the latch sensor is not latched, and FIG. 5B shows a state in which the latch sensor is latched. The ISOFIX unit 40 is a device for automatically mounting the pedestal portion 18 by moving it to the seed back 3 after latching the lock portion 22 serving as the ISOFIX mounting portion with the anchor 4 of the seat 1. The specific configuration of the ISOFIX unit 40 includes an ISOFIX drive motor 42, a latch sensor 44 (see FIG. 5), and an ISOFIX telescopic position sensor 46.
The ISOFIX drive motor 42 is attached to the pedestal portion 18 and has a pinion 421 on the shaft, and the pinion 421 meshes with the nut 423 of the feed screw 422 connected to the lock arm 20. The nut 423 is screwed with the feed screw 422 and is rotatably fixed to the pedestal portion 18. The feed screw 422 does not rotate and is fixed to the lock arm 20.

The latch sensor 44 is a sensor capable of detecting whether or not the lock portion 22 is latched with the anchor 4. As shown in the figure, the latch sensor 44 has a structure in which the contact piece 441 opens and closes as the concave-convex portion 201 at the rear end of the lock arm 20 moves, and in the state (A), the contact piece 441 is separated from the sensor body. .. When the lock portion 22 latches with the anchor 4 as in (B), the lock arm 20 moves to the anchor side and the contact piece 441 is pushed by the uneven portion 201 and comes into contact with the sensor body to detect the latch state. Such a latch sensor 44 is attached to a pair of left and right lock arms 20. The determination unit 82 of the control unit 80 connected to the latch sensor 44 can determine whether or not the latch is performed based on the detected value.

The ISOFIX telescopic position sensor 46 is a sensor attached to the pedestal portion 18 to detect the amount of movement of the lock arm 20. The determination unit 82 of the control unit 80 connected to the ISOFIX position expansion / contraction sensor 46 can determine whether or not the amount of movement of the lock arm 20 is sufficient for mounting based on the detected value.
In the ISOFIX drive unit 40 having such a configuration, the ISOFIX drive motor 42 rotates and the nut 423 moves forward and backward along the longitudinal direction of the feed screw 422 by the drive control of the control unit 80 described later. In other words, when the lock arm 20 to which the feed screw 422 is connected latches on the anchor, the pedestal portion 18 to which the nut 423 is fixed moves to the anchor side due to the rotation of the ISOFIX drive motor 42, and the back surface becomes the seat back 3. Can be brought into close contact.

Further, in the manual ISOFIX structure, the pedestal portion 18 is brought closer to the seat back side while being locked stepwise using a lock pin, but depending on the vehicle model, a gap is created in the stepwise lock due to the structure and the lock does not adhere. There was something. However, in the case of the feed screw and nut structure of the present invention, since it is in a stepless state, that is, a self-locking state in which the nut following the drive motor does not rotate, it can be stopped and fixed at an arbitrary position. Therefore, the pedestal portion 18 and the seat back 3 can be brought into close contact with each other, and the structure can be simplified and the weight can be reduced as compared with the case of the manual type of the lock mechanism.
The configuration of the ISOFIX drive unit is not limited to the lead screw, and a rack, pinion structure, or wire structure may be adopted.

(Support leg drive unit 60)
FIG. 9 is an explanatory diagram of the support leg drive unit and the support leg position detection sensor. The support leg drive unit 60 includes a support leg drive motor 62, a telescopic position sensor 64, a grounding sensor 66 (see FIG. 4), and a floor surface detecting means 68 (see FIG. 4).
The support leg drive motor 62 is attached to the first support (pedestal portion 18 side) 31 on the pedestal portion 18 side of the support legs 30 including the first and second supports 31, 32, and a pinion 621 is provided on the shaft. It is a motor.
Further, the expansion / contraction position sensor 64 is attached to the first support 31 so that the amount of movement of the second support 32 with respect to the first support 31 can be detected.

Further, a gear 631 that meshes with the pinion 621 and a feed screw 63 that is fixed to the gear 631 are rotatably attached along the longitudinal direction.
A nut 632, which is screwed into the feed screw 63 and fixed to the second support member, is attached to the second support 32.
In the support leg drive unit 60 having such a configuration, when the support leg drive motor 62 rotates in the forward and reverse directions, the gear 631 and the feed screw 63 rotate via the pinion 621. The second support 32, which fixes the nut 632 screwed to the feed screw 63, moves back and forth with the first support 31 as a base point.

The ground contact sensor 66 is a sensor attached to the lower surface of the second support 32 and capable of detecting whether or not it is in contact with the floor surface of the seat. The grounding 66 sensor can detect the distance to and from the floor by applying, for example, a floor distance sensor. The determination unit of the control unit connected to the grounding sensor 66 can determine whether or not the support leg 30 is in contact with the floor surface based on the detected value. The grounding sensor 66 can also be configured to detect an iron plate on the floor surface by using a magnetic sensor.
The floor surface detecting means 68 is a means capable of acquiring floor surface side information between the tip of the support leg and the floor surface. The floor surface detecting means 68 is a floor surface distance sensor or / and capable of detecting any one or more of the distance between the tip of the support leg 30 and the floor surface and the foreign matter between the tip of the support leg 30 and the floor surface. A floor camera can be used.
The floor side information refers to the distance between the tip of the support leg and the floor surface or a foreign substance.
The floor surface detecting means 68 is attached to the first support 31 and is configured to be capable of detecting foreign matter between the floor surface of the seat and the support leg. The determination unit 82 of the control unit 80 connected to the floor surface detection means 68 can determine whether the support leg is properly in contact with the floor surface.

(Main body 70)
The main body 70 includes a back surface detecting means 71, a seating sensor 72, a back distance sensor 73, a battery 74, a speaker 75, and a microphone 76.
The back surface detecting means 71 is a means capable of acquiring back side information between the main body 11 (seat portion 16 or pedestal portion 18) and the seat back 3 of the seat. FIG. 7 is an explanatory diagram of the back surface detecting means. The back surface detecting means 71 is a back distance sensor 73 or a back distance sensor 73 that detects any one or more of the distance between the main body 11 and the seat back 3, the angle of the seat back 3, and the foreign matter between the main body 11 and the seat back 3. / And a rear camera can be applied.
Further, the back side information means any of the distance between the main body 11 and the seat back 3, the foreign matter, and the angle of the seat back.
As shown in FIG. 7A, the back surface detecting means 71 is attached to the back surface 14 of the seat unit 16, and in the determination unit 82 of the control unit 80 connected to the back surface detecting means 71, the pedestal unit 18 is in proper contact with the seat back 3. You can judge whether it is.
The back surface detecting means 71 can detect a foreign substance between the back surface of the child seat and the seat back 3 of the seat 1 (see FIGS. 7 (C) or 7 (D)).
As with the back surface detecting means 71, the floor surface detecting means 68 may detect foreign matter by image processing using a camera. When a camera is used as the floor surface detecting means 68, it is possible to detect a distance in addition to detecting a foreign substance. For example, by using a plurality of cameras, the distance can be calculated using the principle of triangulation.

The back surface distance sensor 73 serving as the back surface detecting means is a sensor provided on the back surface of the pedestal portion 18 (equally spaced on the back surface). The back distance sensor 73 detects the distance between the back surface of the pedestal portion 18 and the seat back 3 of the seat 1. In the determination unit 82 of the control unit 80 connected to the back distance sensor 73, when the distance to the back seat 3 is not constant (the upper distance is long, the lower distance is short, etc.), the seat back 3 is tilted. It can be determined that the angle is not an appropriate angle (see FIG. 7C). On the other hand, when the distance to the back seat is constant (the upper distance and the lower distance are the same), it can be determined that the child seat 10 can be brought into close contact with the seat 1 when the child seat 10 is attached to the seat 1 at an appropriate inclination angle of the seat back 3. (See FIG. 7 (D)). The back distance sensor 73 can also detect foreign matter by using the detection value of the ISOFIX position expansion / contraction sensor 46. As an example, the detection value of the back distance sensor 73 is set to 500 mm before the movement of the ISOFIX drive unit, and the detection value of the ISOFIX position expansion / contraction sensor 46 is set to 100 mm by moving the ISOFIX drive unit. When the measured value of the back distance sensor 71 after moving 100 mm is 300 mm instead of 400 mm, it can be recognized that a foreign substance is caught.
In addition, foreign matter can be detected even with the configuration of only the back distance sensor 73. Specifically, when the back distance sensor 73 is detected together with the movement by the ISOFIX drive unit, the relationship between the movement time and the distance is usually in a predetermined proportional relationship (when the speed is constant), but with respect to this movement time. When an extremely short distance is detected, it can be recognized that a foreign substance is sandwiched between them.

A low friction portion 77 is attached to the lower surface of the pedestal portion 18 (see FIG. 7B). The low friction portion 77 is provided at a position where it comes into contact with the seat surface 2 of the seat 1, and is a low friction material (for example, fluororesin or the like), in other words, a slippery member. The pedestal portion 18 is seated back by the ISOFIX drive motor 42. When moving to the 3rd side, it is slid to make it easier to move. As a result, the load on the drive motor can be reduced, and the capacity specifications of the motor can be reduced to reduce the size.
FIG. 6 is an explanatory diagram of the seating sensor. As shown in the figure, the seating sensor 72 is a load sensor and / or a temperature / humidity sensor attached to the seating surface 12 of the seat portion 16. The load sensor can detect the weight of the seated infant, and the temperature / humidity sensor can detect the body temperature and humidity of the seated infant. The determination unit of the control unit connected to the seating sensor can determine whether or not an infant has boarded the child seat 10 based on the detected value.

The battery 74 can be secured by connecting a rechargeable portable battery built in the pedestal portion 18 or a vehicle battery with a cable.
The specific configuration of the battery 74 is such that the ISOFIX child seat 10 is attached to the vehicle and the connection cable is inserted into the cigar socket so that the battery 74 can be connected to the vehicle battery. Next, when the engine is turned on, the engine is driven by the vehicle battery, and the vehicle battery is used to store electricity in the mobile battery. On the other hand, when the engine is off, it is driven by a stored portable battery.
The speaker 75 utters an announcement, an alarm, or the like from the control unit 80. It is also possible to apply the output by LED display (warning lamp display).
The microphone 76 is configured so that the ISOFIX child seat 10 can be attached or detached by voice operation. It can also be used when making a call with an external service center, which will be described later.

(Control unit 80)
The control unit 80 has a determination unit 82 and a communication unit 84.
When the detection values from the various sensors described above are input, the determination unit 82 performs various determination processes. As a result of the determination process, if there is a problem, a warning (alarm) is transmitted to the speaker 75.
The communication unit 84 is a wired or wireless line (for example, Bluetooth (registered trademark), Wi-Fi, specified low power, etc.) capable of transmitting or receiving detected values by connecting to various sensors and cameras.

The vehicle battery 90 can be used as a power source for the child seat 10 as described above.
The vehicle information 92 is, for example, information such as engine start and running, and can be safely used by performing a self-check of the installation status of the ISOFIX child seat 10 at the time of engine start and running.
The user's smartphone 94 is configured to send an operation command for attaching or detaching the ISOFIX child seat 10 to the control unit 80.
As an example, the external service center 96 transmits a photographed image (an image after the ISOFIX child seat is attached) to the service center 96 when a camera is used for the back surface detecting means and the floor surface detecting means, and the installation state by a third party. You can check and give guidance. In addition, it is possible to contact the service center in case of shortage.

[How to attach the ISOFIX child seat 10]
The mounting method using the ISOFIX child seat of the present invention having the above configuration will be described below.
FIG. 2 is a first processing flow chart of the ISOFIX child seat of the present invention. FIG. 3 is a second processing flow chart of the ISOFIX child seat of the present invention.

Turn on the battery 74 of the child seat 10 and turn on the power.
An announcement of installation is played from the speaker 75. For example, it announces to the user that the ISOFIX mounting portion is latched on the anchor.
When the user performs a latch operation and latches, a latch detection signal is sent from the latch sensor 44 to the control unit 80.
The determination unit 82 of the control unit 80 determines whether or not the left ISOFIX mounting unit is latched on the anchor (S1).

When it is determined that the left ISOFIX mounting portion is latched on the anchor (YES), the determination unit 82 of the control unit 80 determines whether or not the right ISOFIX mounting portion is latched on the anchor (S2). ..
If it is determined in S1 and S2 that the latch is not performed, the device waits for a certain period of time (S3). After a certain period of time elapses, a warning signal is sent from the control unit 80 to the speaker 75, and a warning (not latched) flows. As long as a certain period of time elapses, the processing of S1 and S2 and the presence / absence of the latch by the latch sensor 44 are continued.

The above-mentioned latch completion operation triggers the ISOFIX drive unit, and the procedure proceeds as follows. The back distance sensor 73 detects the distance between the back surface of the pedestal portion 18 and the seat back 3 of the seat 1 and sends it to the control unit 80.
The determination unit 82 of the control unit 80 determines whether or not the seat angle of the vehicle seat (seat back 3) is normal (S4). When the distance to the seat back 3 is not constant based on the detection values of the plurality of back distance sensors 73 (the upper distance is long, the lower distance is short, etc.), the inclination angle of the seat back 3 is not an appropriate angle. (NO), a warning signal is sent from the control unit 80 to the speaker 75, and a warning (vehicle seat angle is abnormal) flows. On the other hand, when the distance to the seat back 3 is constant (the upper distance and the lower distance are the same), it is determined that the inclination angle of the seat back 3 is an appropriate angle (YES).

Next, the determination unit 82 of the control unit 80 determines whether or not the infant is seated in the child seat (S5). When the seating sensor 72 sends the detection value that the baby is seated, it is determined that the child seat has an occupant (NO), and the control unit 80 sends a warning signal to the speaker 75 to warn (the child seat has an occupant). Flows. On the other hand, when the detection value in which the infant is seated is not sent from the seating sensor 72, it is determined that there is no occupant in the child seat (YES).
An announcement of the start of installation is played from the speaker 75.

(ISOFIX operation: The back of the pedestal and the seat back are grounded)
The determination unit 82 of the control unit 80 determines whether or not there is any foreign matter between the back surface of the pedestal unit and the seat back (S6). When the determination unit 82 detects a foreign object (NO), the determination unit 82 stops the operation based on the detection signal of the rear surface detection means 71 (for example, an image captured by the camera), and the control unit 80 sends a warning signal to the speaker 75. A warning (with foreign matter) is sent to. On the other hand, if no foreign matter is detected, the process proceeds to the next step (YES).
The ISOFIX drive motor of the ISOFIX drive unit 40 rotates, and the pedestal portion 18 moves to the lock portion 22 side. At this time, the amount of movement is detected by the expansion / contraction position sensor 46. The determination unit 82 of the control unit 80 determines whether or not it is within the ISOFIX operating range (S7). Specifically, based on the detection value of the ISOFIX expansion / contraction position sensor, it is determined whether or not the movement of the pedestal portion 18 by the ISOFIX drive unit 40 toward the seat back 3 is within the operating range (setting range).

When the determination unit 82 determines that it is within the ISOFIX operating range (YES), the determination unit 82 moves the pedestal unit to the seat back side and presses it to a predetermined pressure. On the other hand, when the determination unit 82 determines that it is not within the ISOFIX operation range (NO), the movement operation of the ISOFIX drive unit is stopped.
It is determined whether or not the distance between the back surface of the vehicle seat and the CRS (pedestal portion 18 of the ISOFIX child seat 10) is within the specified value (S8). Specifically, the distance to the seat back 3 is measured by the back distance sensor 73, and it is determined whether or not the distance between the pedestal portion and the seat back is a specified value suitable for mounting. As a result, if it is not a specified value, a warning signal is sent from the control unit 80 to the speaker 75, and a warning (outside the specified value) flows. On the other hand, if it is within the specified value, it is determined that the value is OK and the process proceeds to the next step.

(Support leg operation: The support leg touches the ground on the vehicle floor)
The determination unit of the control unit determines the presence or absence of foreign matter between the vehicle floor and the support leg (S9). When the determination unit 82 detects a foreign substance (NO) based on the detection value of the grounding sensor 66 or the detection signal of the floor surface detection means 68 (such as an image taken by the camera), the operation is stopped and the control unit 80 is stopped. A warning signal is sent to the speaker 75 and a warning (with foreign matter) flows. On the other hand, if no foreign matter is detected, the process proceeds to the next step (YES).

The support leg drive motor 62 of the support leg drive unit 60 rotates, and the second support 32 extends toward the floor surface. At this time, the amount of movement is detected by the expansion / contraction position sensor 64. The determination unit 82 of the control unit 80 determines whether or not it is within the support leg operation range (setting range) (S10). Specifically, based on the detected value of the support leg expansion / contraction position sensor 64, it is determined whether or not the extension length of the support leg 30 is within the operating range (setting range).
When the determination unit 82 determines that the support leg is within the operating range (YES), the determination unit 82 extends until the lower surface of the second support touches the floor surface. On the other hand, when the determination unit 82 determines that it is not within the support leg operation range (NO), the movement operation of the support leg drive unit 60 is stopped, and a warning signal is sent from the control unit 80 to the speaker 75 to give a warning (operation stop). ) Flows.

When the support leg touches the floor, the operation is stopped and the speaker 75 announces that the installation is complete.
The ISOFIX child seat 10 can be attached or detached by providing a manual switch on the main body 11 and turning the switch on / off, or by using a remote controller or the smartphone 94 described above.
According to such an ISOFIX child seat of the present invention, it is possible to prevent the user from erroneously attaching the ISOFIX child seat, and to safely and reliably attach the ISOFIX child seat to the seat.

The present invention has industrial applicability in vehicle-related fields such as child seats, especially for infants.

1 ……… Seat, 2 ……… Seat surface, 3 ……… Seat back, 4 ……… Anchor,
10 ………… ISOFIX child seat, 11 ………… main body, 12 ………… seat surface, 14 ………… back, 16 ………… seat part, 18 ………… pedestal part, 20 ………… lock arm, 22 …… … Lock part,
30 ……… Support leg, 31 ……… 1st support, 32 ……… 2nd support,
40 ……… ISOFIX drive unit, 42 ……… ISOFIX drive motor, 44 ……… latch sensor, 46 ……… ISOFIX telescopic position sensor,

60 ………… Support leg drive unit, 62 ………… Support leg drive motor, 63 ………… Feed screw, 64 ………… Support leg telescopic position sensor, 66 ………… Grounding sensor, 68 ………… Floor surface detection means ,
70 ……… Main body 70, 71 ……… Rear detection means, 72 ……… Seating sensor, 73 ……… Rear distance sensor, 74 ……… Battery, 75 ……… Speaker, 76 ……… Microphone, 77 ……… Low friction unit 80 ……… Control unit, 82 ……… Judgment unit, 84 ……… Communication unit,
90 ……… Vehicle battery, 92 ……… Vehicle information, 94 ……… Smartphone, 96 ……… Service center.

Claims (12)

Comprising a rear detection means capable of obtaining the back-side information between the seat back of the body and the seat,
The back surface detecting means is a back surface distance sensor or / or a back surface distance sensor that detects any one or more of the distance between the main body and the seat back, the angle of the seat back, and the foreign matter between the main body and the seat back. And the rear camera,
The ISOFIX child seat , wherein the back side information is either a distance between the main body and the seat back, a foreign substance, or an angle of the seat back. An ISOFIX mounting part that can move forward and backward with respect to the main body,
An ISOFIX drive unit that moves forward and backward in the ISOFIX mounting unit,
The ISOFIX child seat according to claim 1, further comprising a control unit that drives and controls the ISOFIX drive unit based on a detection value of the back surface detection means. The ISOFIX drive unit includes a feed screw fixed to the ISOFIX mounting portion, a nut screwed with the feed screw and rotatably fixed to the main body, and a drive motor capable of rotating the nut forward and reverse. The ISOFIX child sheet according to claim 2, wherein the ISOFIX mounting portion to which the feed screw is attached moves back and forth with the nut as a base point by rotating the drive motor in the forward and reverse directions. When the back surface detecting means is a back surface distance sensor, at least two or more are attached to the back surface of the main body in the vertical direction, and the inclination angle of the seat back is detected from the difference between the upper and lower detected values. The ISOFIX child seat according to any one of 1 to 3. 2. The ISOFIX drive unit is provided with a telescopic position sensor for detecting the amount of movement of the ISOFIX mounting unit, or any one of claims 3 or 4 subordinate to claim 2. ISOFIX child seat. The body has support legs that extend and contract toward the floor of the seat.
The ISOFIX child seat according to any one of claims 1 to 5, further comprising a floor surface detecting means capable of acquiring floor surface side information between the tip of the support leg and the floor surface. The floor surface detecting means is a floor surface distance sensor or a floor surface distance sensor capable of detecting any one or more of the distance between the tip of the support leg and the floor surface and the foreign matter between the tip of the support leg and the floor surface. / And a floor camera,
The ISOFIX child seat according to claim 6, wherein the floor surface side information is a distance between the tip of the support leg and the floor surface or a foreign substance. A support leg drive unit that expands and contracts the support leg,
The ISOFIX child seat according to claim 6 or 7, further comprising a control unit that drives and controls the support leg driving unit based on a detection value of the floor surface detecting means. The support leg drive unit has first and second support members.
A feed screw fixed to the first support member in a state where only rotation is possible about an axis in the feed direction of the screw, a nut screwed with the feed screw and fixed to the second support member, and the feed. The ISOFIX child seat according to claim 8, further comprising a support leg drive motor capable of rotating a screw in the forward and reverse directions, and the second support member is moved forward and backward by the forward and reverse rotation of the support leg drive motor. The ISOFIX child seat according to claim 9, wherein the support leg drive unit includes a telescopic position sensor capable of detecting the amount of movement of the second support with respect to the first support. The main body is equipped with a seating sensor that detects the presence or absence of an infant.
Claims 2 and 3 to claims 2 which are subordinate to claims 2 and 2, wherein the control unit drives and controls the ISOFIX drive unit based on a detection signal in which an infant is not on board by the seating sensor. The ISOFIX child seat according to any one of 10. The ISOFIX child seat according to any one of claims 1 to 11 , further comprising a communication means capable of transmitting an image attached to the main body by the rear camera to an external service center.

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