JPH0716367U - Junction switch for sliding doors - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a junction switch in which sparks are not generated between the terminals exposed in the body opening. [Structure] When the sliding door 12 is closed, after the earth terminal 29 and the earth connection movable terminal 34 come into contact with each other, the power supply connection movable terminal 33 comes into contact with the power supply connection movable element 17 and retracts by a predetermined stroke. The power supply terminal 24 and the power supply connecting movable element 17 are connected in the switch chamber 22 housed inside. When the sliding door 12 is opened, after the power supply terminal 24 and the power supply connection movable element 17 are separated from each other, the ground terminal 29 and the ground connection movable terminal 34 are separated from each other. Therefore, the ground terminal 29 and the ground connection movable terminal 34 are separated. During
Also, no spark is generated between the power connection movable terminal 33 and the power connection movable element 17, and even if a spark is generated between the power terminal 24 and the power connection movable element 17, the spark is stored in the body. It is enclosed in the switch chamber 22.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a junction switch for sliding doors.

[0002]

[Prior art]

 As disclosed in Japanese Utility Model Application Laid-Open No. 4-125957 and Japanese Patent Application Laid-Open No. 4-135857, since the power is supplied from the body side to an electric mechanism such as an automatic door lock mechanism arranged on the slide door, the slide door is A junction switch is used that brings the power supply terminal and the earth terminal arranged on the body side into contact with the power supply movable terminal and the earth connection movable terminal arranged on the slide door side.

[0003]

[Problems to be solved by the device]

 However, in these junction switches, the contact surface of each terminal is exposed at the body opening end or communicates with the body opening. For this reason, in a vehicle in which the fuel inlet is installed on the pillar that is part of the outer periphery of the body opening, the terminals of the junction switch and the opening of the fuel inlet approach each other. Therefore, when refueling or if leaked gasoline adheres, there is a problem that sparks may occur between the terminals when the sliding door is opened / closed, causing ignition. The present invention has been made to solve the above problems, and an object of the present invention is to provide a junction switch in which no spark is generated between terminals exposed at the body opening.

[0004]

[Means for Solving the Problems]

 As a specific configuration for achieving the above object, in order to supply power from the body side to the electric mechanism mounted on the slide door, the power source terminal and the ground terminal arranged on the body side are slidable. In the junction switch that connects the movable terminal for power connection and the movable terminal for ground connection that are arranged to be able to move backwards against the spring elasticity of the pressing spring on the door side, the slide door advances toward the body side by the spring elasticity of the return spring. Is provided with a movable element for power source connection facing the movable terminal for power source connection on the side, and when the ground terminal and the movable terminal for ground connection come into contact with each other when the slide door is closed, It is characterized in that it is brought into contact with the connecting mover and retracted after a predetermined stroke so as to be connected to the power supply terminal in the switch chamber housed in the body. Junction switch for a sliding door that is provided.

[0005]

[Action]

 When the slide door is closed, the junction switch with the above configuration causes the movable terminal for power supply connection to contact the movable element for power supply connection and to move backward for a predetermined stroke after the ground terminal and the movable terminal for ground connection come into contact with each other. The power supply terminal and the power supply connecting mover are connected in the switch room stored in. When the slide door is opened, the power supply terminal and the power supply connection movable element are separated from each other, and then the ground terminal and the ground connection movable terminal are separated from each other.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram of a power supply system for a sliding door using a junction switch 11 of the present invention. The power feeding relay circuit 1 is composed of a timer circuit 2 and a power feeding relay 3. The power supply circuit 4 is connected to the power supply relay circuit 1, and the voltage of the power supply B is applied to the fixed contact 3b of the timer circuit 2 and the power supply relay 3 and the relay coil 3d. The power feeding relay 3 switches the relay contact 3a between the fixed contacts 3b and 3c by the signal of the timer circuit 2. The relay contact 3a is connected to the (+ BOUT) terminal of the power feeding relay circuit 1. A door control unit (hereinafter referred to as a door control ECU) 13 that controls the power supply relay circuit 1 and the door control motor 14 of the slide door 12 is connected via the junction switch 11.

FIG. 2 is a sectional view showing details of the junction switch 11. The junction switch 11 is composed of a body side junction 16 fixed to the opening 15 opened and closed by the slide door 12, and a door side junction 31 fixed to the slide door 12, which are opposed to each other. The body side junction 16 is provided with a power source connecting movable element 17 and a ground terminal 29. The ground terminal 29 is embedded in the body side junction 16 and exposes the enlarged diameter contact surface 30 to the facing surface 16 a of the body side junction 16. Further, the door-side junction 31 is provided with a power supply connection movable terminal 33 and a ground connection movable terminal 34 that are in contact with the power supply connection movable element 17 and the ground terminal 29.

The power connection movable element 17 is slidably inserted into a sliding hole 21 continuing from the retreat concave hole 20 of the body side junction 16, and a rear end 18 is extended to the back surface of the body side junction 16. Then, the spring receiving washer 23 is fixed to the rear end of the switch chamber 22. Then, at the rear end opening of the switch chamber 22, a lid member 25 having a power source terminal 24 fixedly fitted therein is fitted. A return spring 26 is hooked between the spring receiving washer 23 and the lid member 25, the power source connecting mover 17 is advanced, and the enlarged diameter contact surface 19 is retracted from the facing surface 16a of the body side junction 16 for retracting. Located in hole 20. In this state, the rear end of the power source connecting movable element 17 and the power source terminal 24 are separated by a predetermined distance.

Further, in the switch chamber 22, two switch contacts 27 and 28 that surround the power source connection movable element 17 in a non-contact manner are provided on the back surface of the body side junction 16. As shown in FIG. 3, the switch contacts 27 and 28 are formed in a semicircular shape facing each other, and are bridged by a spring receiving washer 23. The switch contact 27 is connected to the timer circuit 2 described above, and the switch contact 28 is connected to the ground terminal 29.

A spring chamber 32 is formed in the door side junction 31 facing the body side junction 16, and a movable terminal 33 for power supply connection for pressing the movable element 17 for power supply connection to the spring chamber 32, and a ground terminal. The movable terminal 34 for earth connection which contacts 29 is penetrated. Then, it is slidably held by the door side junction 31 and the partition wall 35 of the spring chamber 32. A spring seat 36 is fixed in the spring chamber 32 of the power supply connection movable terminal 33 and the ground connection movable terminal 34, and a pressing spring 37 is hung between the spring seat 36 and the partition wall 35. The projecting lengths of the movable terminal 33 for power supply connection and the movable terminal 34 for ground connection from the facing surface 31a of the door side junction 31 are made equal. Therefore, when the slide door 12 is opened, the movable terminal 34 for connecting the power source is more movable than the facing distance (La) between the movable terminal 33 for connecting the power source and the expanded contact surface 19 of the movable element 17 for connecting the power source. The facing distance (Lb) between the ground terminal 29 and the expanded contact surface 30 is reduced. Therefore, when the sliding door 12 is closed, the contact timing of the earth connection movable terminal 34 is earlier than that of the power supply connection movable terminal 33.

A connection terminal 38 having a lead wire 39 caulked is fixed to the rear ends of the movable power supply connection terminal 33 and the ground connection terminal 34 protruding from the partition wall 35. The pressing spring 37 has a spring constant larger than that of the return spring 26 so that the movable terminal 33 for power connection is retracted after pressing the movable element 17 for power connection. By the fixing position of the spring seat 36, the protruding length of the door side junction 31 from the facing surface 31a can be adjusted.

In the slide door power feeding system having the above structure, when the sliding door 12 is moved to close the opening 15, the door side junction 31 approaches the body side junction 16 and the tip of the ground connection movable terminal 34 is first grounded. The expanded spring 29 comes into contact with the contact surface 30, and the pressing spring 37 is compressed to move backward. Then, the power supply connecting movable terminal 33 pushes the enlarged diameter contact surface 19 of the power supply connecting movable element 17 into the retracting recessed hole 20 against the elasticity of the return spring 26. As a result, as shown in FIG. 4, the spring receiving washer 23 fixed to the rear end 18 of the power source connecting movable element 17 is separated from the switch contacts 27 and 28, and the timer circuit 2 is turned on. When the timer circuit 2 is turned on, the power feeding relay 3 is turned on, the relay contact 3a is switched from the fixed contact 3c to 3b, and the power feeding for applying the voltage of the power source B is continued for a predetermined timer time.

The door control ECU 13 drives the door control motor 14 to fully lock the slide door 12 by supplying power during the predetermined timer time. When the slide door 12 is opened, the door lock control unit (not shown) drives the door lock motor to unlock the slide door 12. When the sliding door 12 is opened, first, the rear end 18 of the power source connecting movable element 17 is separated from the power source terminal 24, and the spring receiving washer 23 bridges the switch contacts 27 and 28 to turn off the power feeding relay 3. To do. Then, the power connection movable terminal 33 is separated from the expanded diameter contact surface 19 of the power connection movable element 17. Then, the movable terminal 34 for ground connection is separated from the expanded contact surface 30 of the ground terminal 29. Therefore, no spark is generated between the terminals exposed on the facing surface 16 a of the body side junction 16 and the facing surface 31 a of the door side junction 31.

As described above, in the sliding door power feeding system of the present embodiment, even if the sliding door 12 is opened during power feeding, and the door opening operation is performed even in the power feeding system that supplies power by the door closing detection switch. Spark generated when the rear end 18 of the power source connecting movable element 17 is separated from the power source terminal 24 before the power feeding relay is turned off quickly is trapped in the switch chamber 22 and leaks to the opening 15 side. Not really.

[0015]

[Effect of device]

 The present invention has the above-described structure, and when the sliding door is closed, the ground terminal and the movable terminal for ground connection come into contact with each other, and then the movable terminal for power connection comes into contact with the movable element for power connection and has a predetermined stroke. When the power source terminal and the power source connecting movable element are connected in the switch chamber stored in the body by retracting and the slide door is opened, the power source terminal and the power source connecting movable element are separated from each other, and then grounded. Since the terminal and the movable terminal for ground connection are separated, there is no spark between the ground terminal and the movable terminal for ground connection and between the movable terminal for power connection and the movable element for power connection. Even if a spark occurs between the power supply terminal and the mover for connecting the power supply, it will be confined in the switch chamber that is stored inside the body, so the fuel inlet will be installed in the pillar part that is part of the outer periphery of the body opening. There is an effect capable of ensuring the safety of the vehicle to be location.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a power supply system for a slide door.

FIG. 2 is a side sectional view of a junction switch.

FIG. 3 is a front view of a switch contact.

FIG. 4 is a plan sectional view showing an operating state of a junction switch.

[Explanation of symbols]

11 ... Junction switch 12 ... Sliding door 16 ... Body side junction 17 ... Power supply connection mover 22 ... Switch room 24 ... Power supply terminal 2
6 ... Return spring 29 ... Ground terminal 31 ... Door side junction 33 ... Power supply connection movable terminal 34 ... Ground connection movable terminal 37 ... Pressing spring

Claims (1)

[Scope of utility model registration request] 1. A power source is supplied from a body side to an electric mechanism arranged on a slide door, so that a power supply terminal and a ground terminal arranged on the body side and a spring elasticity of a pressing spring on the slide door side. In the junction switch that contacts the movable terminal for power connection and the movable terminal for ground connection that are arranged so as to be retractable against each other, the junction switch advances toward the body side by the spring elasticity of the return spring and faces the movable terminal for power connection on the slide door side. A movable element for power supply connection is provided, and the movable terminal for power supply connection abuts on the movable element for power supply connection after the earth terminal and the movable terminal for earth connection contact when the slide door is closed. The junction door slide door is characterized in that the stroke is set back, and the power supply terminal is connected in the switch chamber housed in the body. Pitch.