JPS6221110B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a door lock operating device for an automobile that uses a motor to lock and unlock a door lock body.

<Prior Art> As a conventional door lock operating device of this type, there is one disclosed in, for example, Japanese Utility Model Publication No. 54-30317. As shown in FIGS. 1 to 3, in this door lock operating device, a pinion 3 is attached to a rotating shaft 2 of a motor 1, and an intermediate reduction gear 4 is meshed with the pinion 3. An intermediate pinion 5 is integrally formed with the intermediate reduction gear 4.
A fan-shaped swing gear 6 meshes with the oscillating gear 6. The swing gear 6 is connected via a connecting rod 7 to an operated lever 9 of a door lock body 8. Specifically, the lower end of a connecting rod 7 is pivotally connected to a connecting pin 10 provided at the center of the swing gear 6, and a long hole 11 formed at the top of this connecting rod 7 is provided at the tip of the operated lever 9. The connecting pin 12 is loosely fitted. Further, the elongated hole 11 of the connecting rod 7 is set to a length corresponding to the stroke distance l between the locked and unlocked positions of the operated lever 9, and the swing gear 6 is set to have a length corresponding to the stroke distance l between the locked and unlocked positions of the operated lever 9.
b is set to have a stroke distance larger than the stroke distance l. Furthermore, the above-mentioned swing gear 6
is the coil spring 1 attached to the connecting rod 7.
4, it is possible to freely return to the neutral position. In addition, 15 in FIG. 1 is a lock knob for manual operation provided on the operated lever 9. Therefore, during electric operation, the connecting rod 7 is moved upward or downward through the swinging of the swinging gear 6 by the motor 1, and the elongated hole 11 of the connecting rod 7 is moved to the position A or B in FIG. By moving the operated lever 9 to the unlocked position or the locked position, the door lock body 8 can be unlocked or locked. After the motor 1 stops operating in this unlocked or locked state, the coil spring 14 returns the swing gear 6 to the neutral position by its compression reaction force, and connects the long hole 11 of the connecting rod 7 to the third position.
By moving from position A or B to position C in the diagram,
The operated lever 9 can be freely moved by the length of the elongated hole 11, that is, the stroke distance of the operated lever 9, without moving the swing gear 6.
The door lock body 8 can be locked or unlocked by manual operation using a lock knob 15.

<Problems to be Solved by the Invention> However, in such a conventional door lock operating device, the long hole 11 with a length corresponding to the stroke distance l of the operated lever 9 is connected to the connecting rod 7.
The operated lever 9 is loosely fitted into this elongated hole 11, and the connecting rod 7 is actuated by a swing gear 6 having a stroke distance larger than the above-mentioned stroke distance l on both sides 6a, 6b of the neutral position. Since the operated lever 9 is to be operated using the lever 9, the connecting portion between the operated lever 9 and the connecting rod 7 requires a stroke distance approximately twice as long as the stroke distance l of the operated lever 9, which requires a large amount of installation space. In addition, the swing gear 6 also operates the operated lever 9.
In order to operate the swing gear 6, a stroke distance larger than the above-mentioned stroke distance is required on both sides of the neutral position, and the swing gear 6 itself becomes large. In addition to requiring a large amount of storage space and making it difficult to downsize the entire device, the coil spring 14 constantly applies rotational load to the motor 1, resulting in a large loss of torque from the motor 1.

<Means for Solving the Problems> The present invention has been made by focusing on the problems of the conventional art, and includes separating the intermediate reduction gear and the intermediate pinion and arranging them coaxially. The above-mentioned conventional method is configured such that it can be engaged freely through an elastic body with a rotational play angle corresponding to the stroke distance, and after the elastic body is locked and unlocked by a motor, the intermediate reduction gear is reversed by the energy stored in the elastic body. The aim is to solve the problems of In other words, an intermediate reduction gear that meshes with the pinion of the motor rotating shaft and an intermediate pinion that meshes with the swing gear connected to the output shaft for operating the operated lever of the door lock body are coaxially supported, and these intermediate reduction gears are The gear and the intermediate pinion are provided so as to be freely engaged with each other through elastic bodies with rotational play angles corresponding to the stroke of the operated lever, and the intermediate reduction gear is reversed by the elastic bodies after locking and unlocking by the motor. This is what I did.

<Example> The present invention will be described below based on the drawings.
Note that, in the following, parts similar to those in the prior art are indicated by the same reference numerals, and redundant explanation will be omitted.

FIGS. 4 to 10 are diagrams showing an embodiment of the present invention. In the figure, 16 is an intermediate reduction gear, and 17
is the intermediate pinion. These intermediate reduction gears 16
and intermediate pinion 17 are formed separately and are rotatably attached to the same shaft 19 provided in case 18. Further, a ring-shaped recess 20 is formed in the intermediate reduction gear 16, and an annular portion 21 protruding from the intermediate pinion 17 is inserted into the recess 20. Furthermore, intermediate reduction gear 16
And the intermediate pinion 17 has engaging protrusions 22, 2.
3 respectively. The engagement protrusion 22 of the intermediate reduction gear 16 projects in the axial direction from an appropriate position near the outer side of the intermediate pinion 17 of the intermediate reduction gear 16, and the engagement protrusion 23 of the intermediate pinion 17 The outer edge thereof is projected into the recess 20 from an appropriate position. Therefore, the engaging protrusions 22 and 23 do not come into direct contact with each other. Note that the positions of these engaging protrusions 22 and 23 are not limited to the above example. A ring-shaped spring 24 is interposed in the recess 20 of the intermediate reduction gear 16 between the intermediate reduction gear 16 and the intermediate pinion 17, and both ends 24a and 24b of this spring 24 are placed at positions slightly apart from each other. Both ends 24a, 24b are bent in the radial direction.
The engaging protrusions 22 and 23 are rotatably engaged with each other through the spring 24, and the intermediate reduction gear 16 is reversed through the elastic reaction force of the spring 24 when power is cut off. In addition, both the above-mentioned engaging protrusions 2
The means for rotationally engaging 2 and 23 is a spring 24.
Further, the means for reversing the intermediate reduction gear 16 is not limited to the spring 24, but may be any elastic body. Further, in this door lock operating device, the swing gear 25 that meshes with the intermediate pinion 17 is connected to the operated lever 9.
The output shaft 2 provided in the case 18 is set to a stroke distance corresponding to the stroke distance l of
6, it is swingably supported. The output shaft 26 is connected to the connecting pin 2 within the recess 27 formed in the swing gear 25.
8 is freely inserted through the connecting pin 28, and rotational force is transmitted from the swing gear 25 through this connecting pin 28. The position of the swinging gear 25 is regulated and buffered by dampers 29a and 29b provided on the case 18, and the connecting pin 28 is controlled by dampers 30a and 30b formed on the swinging gear 25 when transmitting rotational force. A buffer is provided. Furthermore, the output shaft 26
A swinging arm 31 is attached to the protruding end of the case 18, and this swinging arm 31 and the operated lever 9 of the door lock body 8 are connected to the connecting rod 3.
They are connected via 2. This connecting rod 32
There is no play between the lever 9 and the lever 9 corresponding to the stroke distance of the lever 9. In the figure, 33 is a sealing X-ring provided between the output shaft 26 and the case 18, and 34 is the shaft 19 and the case 18.
The bushings 35a and 35b provided between the two are stoppers formed on the swing gear 25 to prevent the connecting pin 28 from falling off.

As shown in FIG. 7, the stoppers 35a and 35b have one stopper 35b protruding from the outside so as to cover the recess 27 of the swing gear 25.
The other stopper 35a extends from the boss 25a in an L-shape so as to cover the opening on the opposite side of the recess 27, and when inserting the connecting pin 28, the stopper 35a
5a is inserted while being pressed downward, and then when the pressing force is removed, it returns to its original state and acts as a stopper.

Next, the operation will be explained.

In the case of manual operation [FIG. 8 A to C and FIG. 9 A to C] First, the manual operation from the unlocked state to the locked state will be described. For example, FIGS. 8A to 8C show cases where manual operation is possible without a load. Engagement protrusion 2
3 is adjacent to the end 24a of the spring 24, and the engagement protrusion 22 is adjacent to the end 24b. This state shows a case where the engagement protrusion 23 can rotate counterclockwise to the maximum extent regardless of the engagement protrusion 22. That is, the swing arm 3
1 is manually tilted from the unlocked state to the locked state, the engaging protrusion 23 rotates about one rotation counterclockwise. Even if you turn it counterclockwise once,
On the way, as shown in FIG. 8A, the spring 24 hits the end 24b and rotates a little, but the engagement protrusion 22 does not rotate. Therefore, since the engagement protrusion 23 simply rotates idly, the resistance force of the motor 1 is not added, and the force for tilting the swing arm 31 is extremely small, resulting in good operability.

Then, it is manually locked [Figure 8 C]
When returning the lock manually to the original unlocked state, by tilting the swinging arm 31 in the unlocking direction, the engagement protrusion 23 rotates once clockwise, but as before, the engagement protrusion 23 Since 22 is not rotated, it can be returned to its original unlocked state (Fig. 8A) without any load. Incidentally, the motor operation after the manual operation will be described later.

In addition, failure of the engagement protrusion 22 to return during initial assembly or during motor operation, which will be described later, may occur.
In other cases, due to half-hearted manual operation or the like, the rotation of the engagement protrusion 23 may be interfered with by the engagement protrusion 22, as shown in FIGS. 9A to 9C. In this case, when the engagement protrusion 23 is rotated counterclockwise, the engagement protrusion 23 pushes the engagement protrusion 22 in the same direction via the spring 24,
The engagement protrusion 22 and the engagement protrusion 23 are approximately 1
Rotate. Therefore, in such special cases,
Manual operation requires some force equivalent to the resistance force of the motor 1, but once the manual operation is performed, the engagement protrusion 22 will no longer interfere, so you can freely unlock and lock manually without any load. can be done repeatedly. Note that the engagement protrusion 23 is the engagement protrusion 2.
When pressing 2, the spring 24 bends slightly [End 2
4a and the end 24b are slightly close to each other], the engagement protrusion 22 is slightly separated from the end 24a when the operation is completed due to the repulsive force of the bending (FIG. 9C).
Incidentally, since the above-mentioned deflection is caused only by the resistance force of the motor 1, the amount of deflection is small, and when the spring constant of the spring 24 is large, there is almost no deflection.

In this way, in the case of manual operation, even if the engagement protrusion 23 and the engagement protrusion 22 interfere,
Since the engagement protrusion 23 always pushes the engagement protrusion 22 around, once the manual operation is performed, manual unlocking and locking operations can be performed without any load regardless of the engagement protrusion 22. It can be done repeatedly in this state. In other words, in the case of manual operation, the engagement protrusion 2
3 rotates in the direction that pushes the engagement protrusion 22, even if the engagement protrusion 23 rotates in the return direction due to reverse operation [unlock → lock, lock → unlock operation], the engagement protrusion 22 does not get in the way [the engaging protrusion 22 is not in the return direction, but is at the end where the engaging protrusion 23 cannot reach].

In the case of motor operation [FIGS. 10A to 10K] Next, the operation from the unlocked state to the locked state by motor operation will be explained. To move from the unlocked state to the locked state, first, the pinion 3 of the motor 1 rotates the engagement protrusion 22 counterclockwise.
Then, contrary to the case of manual operation, the engagement protrusion 23 is pushed by this engagement protrusion 22 [in the case of manual operation, the engagement protrusion 23 pushes the engagement protrusion 22] counterclockwise. It rotates and tilts the swing arm 31 toward the locking side. More specifically, since the position of the engagement protrusion 23 in the unlocked state is constant, it does not matter what position the engagement protrusion 22 is in or what rotational position the spring 24 is in. Whether it is in the state after the manual operation described above,
By rotating the engagement protrusion 22 counterclockwise, the relationship between the engagement protrusion 22, the engagement protrusion 23, and the spring 24 is always in the state shown in FIG. reach. For example, even if the engagement protrusion 22 is in a state where it can idle to the maximum [FIG. 10A], only the engagement protrusion 22 first idles about one rotation and hits the end 24b [10th
Figure A], and then rotates about one more rotation together with the spring 24, and returns to the above-mentioned "locking start origin".
This leads to the state shown in FIG. 10 (c).

When the engaging protrusion 22 is further rotated counterclockwise from the state shown in FIG. Since the engaging protrusions 22 and 23 are located in a fixed state, the spring 2
4 (FIG. 10D). In other words, the end portion 24a and the end portion 24b are in a state where they are close to each other (coinciding with each other). Once this state is reached, the rotational force (power of the motor 1) of the engagement protrusion 22 is directly transferred to the engagement protrusion 22.
3, the engagement protrusion 23 is also transmitted to the engagement protrusion 2.
2 starts to rotate counterclockwise [Fig. 10 E], and rotates about one rotation to tilt the swinging arm 31 toward the unlocking side [Fig. 10 C]. Then, the swinging arm 31 that has fallen to the unlocking side operates the operated lever 9 via the connecting rod 32 to finally unlock the door lock body 8. In this case, from the swing gear 25 to the output shaft 2
The rotational force is smoothly transmitted to the damper 2 through the damper 30b, and the swing gear 25 is connected to the damper 2 at the swing end.
9a and 30b, the positioning can be performed smoothly and reliably.

Then, when the motor 1 is stopped with the door lock body 8 securely locked (FIG. 10C), the engagement protrusion 22 is moved against the resistance force of the motor 1 due to the elastic reaction force of the relatively strong spring 24. It flips around about 2 times against the force. That is, the engagement protrusion 22 pushed back by the spring 24 first rotates about one turn clockwise and hits the end 24a [Fig. If you press the button, it will make about one more rotation to reach the state shown in Fig. 10(a).

The reason why the engaging protrusion 22 is returned approximately two turns after the motor is operated is in consideration of manual operation after the motor is operated. As mentioned above, unlike in the case of manual operation, in the case of motor operation, the engagement protrusion 22 pushes the engagement protrusion 23 around, so while pushing it around [Fig. 10 E-C] , or immediately after [FIG. 10G], the engagement protrusion 22 is always located in the return direction of the engagement protrusion 23 (adjacent to the end 24b). Therefore, if there is no two-turn reversal due to the elastic repulsive force of the spring 24 as described above, and the state shown in FIG. Even if it is rotated clockwise, the engaging protrusion 22 interferes and becomes a hindrance, and the resistance force of the motor 1 is applied during manual operation. However, as mentioned above, after the motor operation is completed, the engagement protrusion 22 is reversed about two turns, so even if the swing arm 31 is tilted to the release side and the engagement protrusion 23 is rotated one rotation, the engagement protrusion It is possible to operate the engagement protrusion 23 in a no-load state by just letting it idle without interfering with the part 22.

In addition, although the operation from the unlocked state to the locked state by motor operation has been explained above, the operation from the locked state to the unlocked state is exactly the same, and the engagement protrusion 2
2 and the spring 24, if the engaging protrusion 22 is rotated clockwise by the motor 1, the "unlocking start origin" when moving from the locked state to the unlocked state [Fig. 10] After the state shown in (k) is reached, the engagement protrusion 22 becomes the engagement protrusion 23.
The swinging arm 31 is pushed to the unlocking side by pushing the swinging arm 31, and then the swinging arm 31 is turned around about two times and returned to the same position as described above. Therefore, the subsequent manual operation is performed by the engaging protrusion 23 regardless of the engaging protrusion 22 as described above.
Since it can be rotated, it can be operated without any load.

<Effects> Since the door lock device according to the present invention has been described above, the stroke distance of the operated lever during manual operation can be covered by the rotational play angle provided between the intermediate reduction gear and the intermediate pinion. As a result, the stroke distance of the swing gear only needs to correspond to the stroke distance of the operated lever, and the swing gear can be made smaller and lighter.

In addition, unlike in the past, there is no need for play between the connecting rod and the operated lever that corresponds to the stroke distance of the operated lever, and the installation space can be reduced accordingly. The elastic body for reversing does not need to operate a swing gear as in the past, and can be made simple and compact.The rotational load applied to the motor can also be reduced, allowing the overall device to be made smaller. There is an effect that can be achieved.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing a conventional door lock operating device, Fig. 2 is an enlarged cross-sectional view taken along the line of Fig. 1;
Fig. 3 is a partially enlarged view showing the relationship between the operated lever and the long hole of the connecting rod, Fig. 4 is an explanatory view showing an embodiment of the present invention, and Fig. 5 is an enlarged view of the door lock operating device shown in Fig. 4. 6 is a side view of the case as seen from the back side of FIG. 4, FIG. 7 is a sectional view taken along the line of FIG. 6, and FIG.
FIGS. A to C and FIGS. 9 A to C are schematic explanatory diagrams showing manual operation states, respectively, and FIGS. 10 A to Q are schematic explanatory diagrams showing motor operation states, respectively. 1... Motor, 2... Rotating shaft, 3... Pinion, 4, 16... Intermediate reduction gear, 5, 17... Intermediate pinion, 6, 25... Swing gear, 7, 32...
...Connection rod, 8... Door lock body, 9... Operated lever, 22, 23... Engagement protrusion, 24...
...Springs, 24a, 24b... Ends, 26...
...Output shaft.

Claims (1)

[Claims] 1 An intermediate reduction gear that meshes with the pinion of the motor rotating shaft and an intermediate pinion that meshes with the swing gear connected to the output shaft for operating the operated lever of the door lock body are coaxially supported, and these intermediate reduction gears and an intermediate pinion are provided so as to be freely engaged with each other through an elastic body with a rotational play angle corresponding to the stroke of the operated lever, and the intermediate reduction gear is reversed by the elastic body after locking/unlocking by the motor. A door lock operating device characterized by: