JPH0723631U - Automotive power seat - Google Patents

Abstract

(57) [Abstract] [Purpose] The power circuit allows passengers to recline the seat back and slide the seat with a simple circuit configuration without any inconvenience. [Structure] When the seat back is tilted to the restricted tilt range within the seat regulation slide range, the tilt of the seat back is stopped by the first correction circuit, and after the seat is slid outside the regulation slide range, the seat back Reinstate the tilt. Further, when the seat is slid to the restricted slide range in the restricted tilt range of the seat back, the second correction circuit stops the seat slide, tilts the seat back out of the restricted tilt range, and then slides the seat. Resume.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power seat for an automobile, and more particularly to a power seat in which a seat back can be reclined and a seat can be slid without any inconvenience in a front seat with an armrest.

[0002]

[Prior art]

 In automobiles, it is common to operate the reclining mechanism to set the tilt angle of the seat back and the slider mechanism to set the front-back position of the seat according to the physique of the seated occupant. However, recently, a drive motor is provided to power the reclining mechanism and the slider mechanism.

[0003]

[Problems to be solved by the device]

 However, when the front seat with armrests is powered, if the seatback is reclined depending on the seat setting position, the armrests interfere with the center console and the seat cannot be reclined. When it was slid forward, the armrest interfered with the center console and could not be slid.

As disclosed in Japanese Utility Model Laid-Open No. 56-171345, if the tilt angle of the seat back is detected, and if it exceeds a predetermined angle, the seat back is tilted forward and then another mechanism is activated. There is known a power seat that is made to operate, but such a power seat is composed of a microcomputer or the like, which complicates the structure.

In view of the above problems, it is an object of the present invention to provide a power seat for a vehicle in which the occupant can recline the seat back and slide the seat with a simple circuit configuration. To do.

[0006]

[Means for Solving the Problems]

 Therefore, the power seat for an automobile according to the present invention is a power seat for an automobile having a reclining mechanism for tilting the seat back forward and backward by a motor drive and a slider mechanism for setting a front and rear position of the seat by a motor drive. A first energizing circuit that energizes the reclining motor, a first relay circuit that controls energization by the first energizing circuit by operating the first switch, a second energizing circuit that energizes the slider motor, and a second switch. The second relay circuit that controls the energization by the second energizing circuit by operation, and the seat back is tilted by controlling the first relay circuit when the seat back is tilted to the restricted tilt range in the seat regulation slide range. Stop and control the second relay circuit to slide the seat out of the regulation slide range and then control the first relay circuit to control the seat back. Characterized in that a first correction circuit for restarting the rearward inclination.

In addition, in the power seat for an automobile according to the present invention, the seat is controlled by controlling the second relay circuit when the seat is slid into the restricted slide range in the restricted tilt range of the seat back instead of the first correction circuit. It is equipped with a second correction circuit that stops the sliding of the seat and controls the first relay circuit to tilt the seat back out of the regulated tilt range and then controls the second relay circuit to restart the seat sliding. And

The first and second correction circuits are preferably provided at the same time.

[0009]

[Action and effect of the device]

 When the first switch is operated, the first energizing circuit is controlled by the first relay circuit, the reclining motor is energized, and the seat back can be tilted forward or backward. Further, when the second switch is operated, the second relay circuit controls the second energizing circuit, the slider motor is energized, and the seat can be slid forward or backward.

At that time, if the seat back is tilted to the restricted tilt range while the seat is in the restricted slide range, there is a concern that the armrest and the center console may interfere with each other. The relay circuit is controlled to stop the tilting of the seat back, slide the seat out of the regulation slide range, and then restart the tilting of the seat back, so that the armrest and the center console do not interfere with each other and the seat is inconvenient. You can recline the back.

Further, if the seat slides in the regulation slide range when the seat back is in the regulation tilt range, there is a concern that the armrest and the center console may interfere with each other. (2) The relay circuit is controlled to stop the seat slide and tilt the seat back out of the restricted tilt range, and then the seat slide is restarted, so there is no inconvenience because the armrest and center console do not interfere. The seat can be slid.

Therefore, according to the present invention, the occupant can recline the seat back, slide the seat, and the device is configured by the hardware circuit without any inconvenience, so that the device is not complicated. .

[0013]

【Example】

 Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. 1 to 4 show an automobile power seat according to an embodiment of the present invention. 1 to 3, a seat 1 is disposed on a passenger compartment floor F, and the seat 1 includes a seat cushion 10 and a seat back 11. The seat back 11 includes an armrest 12 and a headrest 13. It is provided.

A reclining mechanism 2 driven by a drive motor 20 is provided between the seat cushion 10 and the seat back 11 so that the seat back 11 can be tilted back and forth. A slider mechanism 3 driven by a drive motor 30 is provided on the lower side of the seat 1 so that the seat 1 can be set in the front-back position. Note that since the reclining mechanism 2 and the slider mechanism 3 can employ known mechanisms, detailed description thereof will be omitted.

In the reclining mechanism 2, limit switches LL1 and LL2 are attached to the lower bracket 21 on the seat cushion 10 side, and the operation piece 23 is fixed to the upper bracket 22 on the seat back 11 side, and the limit switch LL1. , LL2 are turned on and off by the operation piece 23 to detect the tilt angle of the seat back 11. Further, as shown in FIG. 5, the limit switch LL 1 is ON in the restricted tilt range C and is OFF in the restricted tilt range D, while the limit switch LL 2 is at the boundary between the restricted tilt range D and the restricted tilt range C. It is set to turn on in both ranges C and D and in an angular range that does not turn on / off due to reclining overrun. The limit switch LL1 is a switch with two circuits.

Further, in the slider mechanism 3, limit switches SL 1 and SL 2 are attached to the upper rail 31 of the seat cushion 10, and a protrusion 320 is formed on the lower rail 32. The limit switches SL 1 and SL 2 are ON / OFF by the protrusion 320. It is turned off to detect the front-back position of the seat 1 (however, the projection for turning on the limit switch SL1 is not shown). Further, as shown in FIG. 5, the limit switch SL1 is turned on in the restricted slide range A and turned off in the restricted slide range B, while the limit switch SL2 is at the boundary between the restricted slide range B and the restricted slide range A. It is set to turn on in both slide ranges A and B, and in the slide range that does not turn on and off with slide overrun. A switch with two circuits is used as the limit switch SL1.

FIG. 4 shows the configuration of the control circuit. In the figure, 20 and 30 are motors for reclining and sliders, 4 is a relay section Ry1 and Ry2 connected, a second energizing circuit for energizing the slider motor 30, and 5 is a relay section Ry3 and Ry4. The second energizing circuit for energizing the reclining motor 20 is connected to the relays Ry1 and Ry2, and the second relay for controlling the energization by the second energizing circuit 4 by operating the manual switch (second switch) SSW. A circuit 7 is a first relay circuit to which relays Ry3 and Ry4 are connected and which controls energization by the first energizing circuit 5 by operating a manual switch (first switch) LSW.

Reference numeral 8 is composed of a two-circuit limit switch LL1 and a limit switch SL2, and when the seat back 11 is tilted rearward into the restricted tilt range C in the restricted slide range A of the seat 1, the first relay circuit 7 is provided. Control the seat back 11 to stop the rearward leaning, control the second relay circuit 6 to slide the seat 1 outside the regulation slide range B, and then control the first relay circuit 7 to control the rear of the seat back 11. This is the first correction circuit that restarts the inclination. Further, reference numeral 9 is composed of a two-circuit limit switch SL1 and a limit switch LL2, and controls the second relay circuit 6 when the seat 1 is slid into the regulation slide range A within the regulation tilt range C of the seat back 11. After stopping the sliding of the seat 1 and controlling the first relay circuit 7 to tilt the seat back 11 out of the regulated tilt range D, the second relay circuit 6 is controlled to restart the sliding of the seat 1. It is a second correction circuit.

Next, the operation will be described. First, when the manual switch SSW is turned on to the contact SF side, the relay Ry1 of the second relay circuit 6 is energized and the relay segment Ry1 of the second energization circuit 4 is turned on. At this time, the relay segment Ry2 is connected to the ground side. Therefore, the motor 30 is energized and rotated, and the seat 1 is slid forward. When the manual switch SSW is turned on to the contact SB side, the motor 30 is energized in the reverse direction and rotates in the reverse direction, and the seat 1 is slid backward.

When the manual switch LSW is turned on to the contact LF side, the relay Ry3 of the first relay circuit 7 is energized and the relay segment Ry3 of the first energization circuit 5 is turned on. At this time, the relay segment Ry4 is on the ground side. Since the motor 20 is energized and rotated, the seat back 11 is tilted forward. When the manual switch LSW is turned on to the contact LB side, the motor 20 is energized in the reverse direction and rotates in the reverse direction, and the seat back 11 is tilted rearward.

By the way, when the seat 1 is in the front regulation slide range A, the manual switch LSW is turned on to the contact LB side, and when the seat back 11 is tilted rearward to reach the regulation tilt range C, the armrest 12 and The center console F1 interferes with it and it becomes impossible to recline, but in the power seat of this example, the limit switch SL1 is turned on in the above-mentioned state, the power supply, the relay Ry4, the limit switch SL1 and the limit switch LL1. When the manual switch LSW is turned on to the contact LB side, the motor 20 is energized and the seat back 11 starts tilting backward.

When the seat back 11 is tilted backward and the limit switch LL2 is turned on, the energization of the first relay circuit is stopped and the tilting of the seat back 11 is stopped. This time, the power source, the relay Ry2, and the limit switch SL1 are turned on. , The path of the limit switch LL1 and the path of the manual switch LSW are closed, the second energization circuit 4 is turned on, the motor 30 is rotated, and the seat 1 is slid backward.

When the seat 1 is out of the restricted slide range B and the limit switch SL1 is turned off, the second energizing circuit 4 is turned off and the rearward sliding of the seat 1 is stopped, and at the same time, the power source, the relay Ry4, and the limit switch. The section of SL1 and the path of the manual switch LSW are closed, and the seat back 11 resumes the backward tilting.

In this way, the seat back 11 can be reclined at a desired angle without the armrest 12 and the center console F1 interfering with each other. When the seat 1 is near the boundary between the restricted slide range A and the outside range B, the limit switch SL2 is turned on, but there is no problem because the manual switch SSW is off.

Further, when the seat back 11 is in the rearward regulation tilt range C, the manual switch SSW is turned on to the contact SF side, and when the seat 1 is slid forward to the regulation slide range A, the armrest 12 is moved. The center switch F1 interferes with the center console F1 and cannot slide. However, in the above-mentioned state, the limit switch LL1 is ON, and the second relay circuit is formed by the power supply, the relay Ry1, the intercept of the limit switch LL1 and the intercept of the limit switch SL2. When the manual switch SSW is turned on to the contact SF side, the motor 30 is energized and the seat 1 starts to slide forward.

When the seat 1 slides and the limit switch SL2 is turned on, the power supply to the second relay circuit is stopped and the slide of the seat 1 is stopped, and the power source, the relay Ry3, the section of the limit switch LL1, and the limit switch. The section of SL2 and the path of the manual switch SSW are closed, the first energizing circuit 5 is turned on, the motor 20 rotates, and the seat back 11 is tilted forward.

When the seat back 11 goes out of the restricted tilt range D and the limit switch LL1 becomes OF F, the first energizing circuit 5 is turned off to stop the forward tilt of the seat back 11, and at the same time, the power source, the relay Ry1, and the limit. The section of the switch LL1 and the path of the manual switch SSW are closed, and the seat 1 resumes the forward sliding.

In this way, the seat 1 can be slid to a desired position without the armrest 12 and the center console F1 interfering with each other. When the seat back 11 is near the boundary between the restricted tilt range C and the outside range D, the limit switch LL2 is turned on, but there is no problem because the manual switch LSW is turned off.

[Brief description of drawings]

FIG. 1 is a schematic view showing a power seat for an automobile according to an embodiment of the present invention.

FIG. 2 is a side view showing the structure of the power seat.

FIG. 3 is a front cross-sectional configuration diagram showing the power sheet.

FIG. 4 is a circuit configuration diagram showing a control circuit of the power seat.

FIG. 5 is a diagram showing an operation timing of the power seat.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Seat 10 ... Seat cushion 11 ... Seat back 2 ... Reclining mechanism 20 ... Drive motor 3 ... Slider mechanism 30 ... Drive motor 4 ... 2nd energizing circuit 5 ... 1st energizing circuit 6 ... 2nd relay circuit 7 ... 1st relay Circuit 8 ... Second correction circuit 9 ... First correction circuit

Claims (2)

[Scope of utility model registration request] 1. A reclining motor is energized in a power seat for an automobile, comprising a reclining mechanism for driving a motor vehicle to tilt a seat back forward and backward, and a slider mechanism for setting a front and rear position of the seat by driving the motor. A first energizing circuit, a first relay circuit that controls energization by the first energizing circuit by operating the first switch, a second energizing circuit that energizes the slider motor, and a second relay circuit by operating the second switch. 2nd relay circuit for controlling energization by the 2 energizing circuit, and when the seat back is tilted within the restricted tilt range in the seat regulation slide range, the first relay circuit is controlled to stop the tilt of the seat back and the second relay circuit is controlled. After controlling the circuit to slide the seat out of the regulation slide range, the first relay circuit is controlled to restart the tilting of the seat back.
A power sheet for an automobile, comprising: a correction circuit. 2. A reclining motor is energized in a power seat for an automobile, comprising a reclining mechanism for tilting a seat back forward and backward by a motor drive and a slider mechanism for setting a front and rear position of the seat by a motor drive. A first energizing circuit, a first relay circuit that controls energization by the first energizing circuit by operating the first switch, a second energizing circuit that energizes the slider motor, and a second relay circuit by operating the second switch. 2nd relay circuit for controlling the energization by the 2 energizing circuit, and the 1st relay circuit for stopping the sliding of the seat by controlling the 2nd relay circuit when the seat is slid to the restricted slide range in the restricted tilt range of the seat back. Control to tilt the seat back outside the regulation tilt range, and then control the second relay circuit to restart the sliding of the seat. Automotive power seat, characterized in that a positive circuit.