JPS5850265A - Door lock drive apparatus for vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides locking irons that can be closed or opened.
1st to operate. As published by the 2nd VD Actuation Department, this article relates to a vehicle door lock driving device 11 that employs a salt-sensitive member such as a shape memory alloy or bimetal.

Various vehicle door lock drive devices have been proposed in the past, but the electromagnetic door lock IIA#IJJ device, which combines a mechanical door lock with a solenoid and a changeover switch, is currently in practical use. has been done. In other words, this electric door lock drive device has, for example, a changeover switch that is linked to the door key and the door handle on the indoor side by a link lever to lock the front seat door, and a lock tooth that is linked to the link lever. It has a structure that includes nine solenoids with cams that fix the movement of the lever that releases the lock by removing the claw that engages with the electric current.

However, in a vehicle door lock drive device having such a structure, the number of members such as a solenoid and a link lever increases and the size increases, and when operating the solenoid, it becomes difficult to operate the solenoid. One drawback was that the operating noise was noisy.

SUMMARY OF THE INVENTION An object of the present invention is to provide a door lock drive device for a vehicle that is small and lightweight, as well as quieter in operation.

In order to achieve such an objective, the present invention comprises a first actuating member that operates to close the locking rod, and a second actuating member that operates the locking rod to open the locking rod.夛, said 1st. The second actuating member is defined by a base Km and is formed by a temperature sensitive member whose shape changes depending on the temperature. The second actuating member includes the first.
The structure is such that a heating means t'' is provided to soften the O-shape of the operating part of @2.

Hereinafter, the present invention will be explained in detail using examples shown in flJK.

1 to 3 show simplified configuration diagrams of the vehicle door lock driving device according to the present invention, in which FIG. 1 shows IsI and the position of the second actuating member at room temperature, and FIG. 3 is a diagram showing the position of the first actuating member when it is heated, and FIG. 3 is a diagram showing the position of the second actuating member when it is being heated. One end of the vehicle door lock drive device has a base body 1.
The first. jg20 operating member 2.3 and the retaining s4m provided at the lower end or the above #
! 1, and a locking rod 4 disposed between the open ends of the second actuating members 2 and 3.

The feature of the present invention is that in the above configuration, @1. The operating members 2 and 3 of $2 are made of a temperature sensitive member whose shape changes depending on the temperature (in this embodiment, a shape memory alloy).

Part 1. The second actuating member 2, 3 has a first . A heating means for heating the second actuating member 2.3 Yr to change the shape of the member, this book l! In the example, 1st. #I2 heater 5, 6
The T-winding consists of nine configurations. By the way, to explain Hl in more detail about shape memory alloys, shape memory alloys are metals that have mechanical memory ability, and when heated, they remember their original shape.
K and O-shaped Kji so that the spring bounces! Ru. Moreover, a considerable amount of force is generated during this deformation.

Further, NiO gold #i is not a bimetal in thermal equilibrium but a single alloy, and its physical changes occur due to changes in the crystal structure of the alloy composition. After this alloy is formed into the required shape, it is annealed to fix that shape.

The molded part is then cooled and the compositional grain structure changes from austenite to martensite. In this state, the elastic modulus is low and the shape at the time of storage can be easily changed, and when reheated, the structure is tightened and returns to the austenite phase.
Remembering its original form. The 1% point is that the force generated when a metal alloy part returns to its original shape is much greater than the force required to deform it. Compared to shape-memory alloy bimetals, both the generation of force and the change in shape occur with a relatively small difference in degrees, making the alloy f
When heated above point II, deformation occurs suddenly and a large force is generated. In contrast, in bimetals, the shape of diabolite occurs slowly over a large temperature range.

A shape memory alloy is an alloy having the characteristics described above.

Next, the operation of the vehicle door lock drive device configured as described above will be explained. First, at room temperature, the first.
A2O made as material 2.3-Fi No. 11mK As shown, one parallel state lI is maintained. And from this state #!
When the first heater 5 is energized, the first actuating member 2 made of a shape memory alloy is heated by the first heater 5. Then, when the applied force of the first actuating member 2 exceeds the transformation point Kjl, the first actuating member 2 suddenly deforms as shown in FIG. 2, and as a result, the locking rod 4VrT Then, the first heater 5 is turned off and the second heater 6 is turned on at the same time as the first heater 5 is turned off. Then, as the first actuating member 2 cools, it returns to its original straight state, while
When the heating temperature of the second actuating member 3#i reaches the transformation point or higher, the second actuating member 3 suddenly deforms as shown in FIG. 3, thereby causing the locking rod to move upward. Push up and unlock the door. Thereafter, when the power supply to the second heater 6 is cut off, heating of the second actuating member 3 is stopped, and as the second actuating member 3 cools, it returns to the straight state shown in FIG. 1. As shown in FIG. 4, by combining the energizing switch 7 with a timer 81, it is possible to set the timer 81. second actuating member 2,
3 reaches the transformation point, the first, 1IIJ2 heater 5,
It is also possible to have a configuration in which the power supply to 6 is automatically cut off.

Figures #I5 to #7117 show other embodiments of the vehicle door lock driving device of the present invention. #! Two heaters 5 and 6 may be wound on the first
．． The second actuating members 2, 3 are fixed in the rotation plate) 9tli, and the rotation gray) 9t/i base IFc support shaft 10
), and a stopper #19a is provided at a predetermined position on the periphery thereof. Further, the base body 1 is defined with an elastic piece 11 whose open end 11m engages with the stopper #9m to maintain the rotational posture of the rotating grate 100, and the open end of the actuating member 2 of the cocoon 1. The upper position of the part or Fi#! 2. At the lower position of the open end O of the IIJJ member 3, there are stopper pins 12 and 13, respectively.

In the vehicle door lock driving device having such a configuration, the first. The M2JD actuating member 2.3 maintains a parallel state 1lt-, and when the first heater 5 is energized from the O-shape a, the first actuating member 2 is heated by the first heater 5.

Then, when the heating temperature of the #1 operating member 2 reaches the 1M point or higher, the #1 operating member 2 suddenly raises its deformed tube as shown in FIG. Push down to lock the door. Next, at the same time as cutting off the power to the first heater 5, the second heater 5 is turned off.
The heater 6 is energized. Then, as the first actuating member 2 cools, it returns to its original straight state, while the second actuating member 3, when its heating temperature reaches the transformation point or higher,
The second actuating member 3 suddenly deforms and this K
Therefore, the locking rod 4 is pushed upward, and the first door is unlocked. In this case, when the second heater 6 is energized R), the heating of the second actuating member 3 is stopped and the second actuating member 3 returns to its original straight state as it cools down. The above operation is similar to that of the first embodiment described above.

This embodiment has the following operational features. That is, when heating of the first actuating member 2 is stopped after the actuating nail material 2 of the sweetfish l is deformed as shown in FIG. 5, before the first actuating member 2 cools down, In other words,
If the locking rod 4 is forcibly pushed upward by hand before the first actuating member 2 becomes straight, the locking rod 4 causes the first actuating member 2 to bend. It will be done. However, as shown in FIG.
The bending of the first actuating member 2 is prevented from deforming by rotating itself. At this time, the amount of rotation of the rotation plate 9 is regulated by the open end of the first actuating member 2 coming into contact with the stopper pin 12, and the hydraulic posture of the rotation plate 9 is as follows. Elastic piece 11
The tip retaining part 11m and the rotating plate 9 stop #$
It will be held by the bond with 9&. On the other hand, the first
As the actuating member 2 gradually cools down and becomes straight, the first actuating part 2 rotates around the bottle 12 for one stroke as shown in FIG.
Let K-bale go home. According to the embodiment of Is2 shown in FIGS. 5 to 7, in addition to the effects of the first embodiment, as described above, the locking Even if the rod 4 is pushed up, it is possible to reliably prevent the first actuating member 2 from being bent.

In addition, in the above-mentioned embodiment, the first. Although a case has been described in which a shape memory alloy is used as the temperature sensitive member forming the second actuating members 2 and 3, the present invention is not limited to this, and a structure using bimetal, for example, may be used. Now, this bimetal is the first. FIG. 8 shows the structure of a vehicle door lock drive device including a second actuating member 14,15. In the figure, 1. @2 (D work #JJ
Bukai 1415Fi, respectively, the first with a large thermal j1 tensile coefficient
Members 14m, 151 and small tl! J2 member 14b
, 15b, and this first. The second actuating member 14.15 has a first. A second heater 16, 17 is wound around it. Therefore, in this in-vehicle door lock driving device, at room temperature, Ml and the second actuating member 14°ts/fi18 maintain a parallel shape ll as shown in FIG. When the first heater 16 is energized from this state, the first heater 16 heats the IIl, 10 actuating member 14 made of bimetal. At this time, the first member 14m+2) having a larger coefficient of thermal expansion extends more than the second member 14b), so the first actuating member 14 itself bends and deforms downward from its base 14C. , the locking rod 1g' is pushed down, and the door is locked.

Next, at the same time as the first heater 16 is cut off, the second heater 17 is turned on. Then, the tenth actuating member 2 returns to its original straight state as it cools down, while the second actuating member 15 has the first member tSaO, which has a larger thermal j1 tensile coefficient, than the second member 15b. Because it stretches to #! The second actuating member 15 itself has its base 15cf:
It bends and deforms upward as a fulcrum, thereby pushing the locking rod 18 upward, and the door is unlocked and in good condition.

Thereafter, when the power to the second heater 17 is cut off, the second actuating member 15 is cooled down, thereby returning to the state shown in FIG. 8 again.

As explained above, the vehicle door lock drive device according to the present invention has a first locking mechanism formed of an 11 degree sensitive member such as a shape memory alloy or a bimetal. #! 2 operating member and this #
! l.Since it has an extremely simple structure consisting of a heating means for heating the second actuating member, it can be made smaller and lighter than the conventional solenoid type door lock drive device, and moreover, during operation, Various excellent effects that can reduce operating noise! It plays J.

[Brief explanation of drawings]

Figures 1 to 31 are simplified diagrams showing one embodiment of the vehicle door lock drive device according to the present invention; Figures 1jl and 4 are circuit diagrams employed in the vehicle door lock drive device according to the present invention; , FIGS. 5 to 7 are simplified configuration diagrams showing other embodiments of the vehicle door lock drive device IL according to the present invention,
FIG. 8 is a simplified configuration diagram showing still another embodiment of the vehicle door lock drive device according to the present invention. 1e... Base body, 2, 14... Meeting/first operating member. 3, Is...fist/second operating member. 4.18...Lock rod. 5.16--First heater. 6.17...Second heater. 9.1.Rotation 7' rate, 9a...stopper groove. 11...Elastic piece. Agent Tatsuyuki Unuma (2 people)

Claims (1)

[Claims] () A first O operating member that operates the locking clock toward the closing side;
9 votes 1. The al120 actuating member is formed by an sI degree sensitive member having one end fixed to the base and changing shape by at, and the first. A vehicle door lock drive device, wherein the second actuating member is provided with heating means for changing the shapes of the first and second actuating members. a) Said cocoon 1. The JR20 actuating member is fixed to the base body through a rotary plate, and the rotary plate is rotatably pivoted to the base body.Claim 1
The vehicle door lock drive device described in Section 1. (3) The rotating plate has a plurality of stopper grooves on its periphery, one base KFi, and a wrinkle stopper #II.
3. The vehicle door lock drive device according to claim 2, further comprising an elastic piece that engages with K, and the elastic piece and the stopper groove together constitute a rotating posture holding mechanism for the rotary plate. (4) Claim 1 in which a shape memory alloy is used as the temperature sensitive member. rJi, 2nd term Sai or 3rd term II
t vehicle door lock drive # 曾. (5) The vehicle door lock drive device according to item 3, which uses a bimetal as the salt-sensitive member and has a range of sWfm requirements of item 1 and item 2.