WO2021131694A1

WO2021131694A1 - Door opening/closing device

Info

Publication number: WO2021131694A1
Application number: PCT/JP2020/045794
Authority: WO
Inventors: 秀樹野間; 義満藤川
Original assignee: 株式会社ユーシン
Priority date: 2019-12-24
Filing date: 2020-12-09
Publication date: 2021-07-01
Also published as: JP2023007523A

Abstract

This door opening/closing device is provided with: an actuator 5 having a driving source 10, a forward/backward rotatable output shaft 11, and a reduction gear mechanism 12 for reducing the speed of a driving force of the driving source 10 by a plurality of gears 13, 14 and transmitting the driving force to the output shaft 11; a case 6 that houses therein at least the driving source 10 and that is fixed to a door attached to a vehicle body in a openable/closeable manner; a lever 7 that is fixed to the output shaft 11 and that rotates forward to move the door in an opening direction, and rotates backward to move the door in a closing direction; a link 8 that couples the lever 7 and the vehicle body; and a biasing member 9 that biases the door at least in one of the opening and closing directions.

Description

Door switchgear

The present invention relates to a door opening / closing device.

Conventionally, a door opening / closing device for automatically opening / closing a vehicle body door is known (see, for example, Patent Document 1). This door opening / closing device includes a device body containing an actuator, an output shaft protruding from the device body and rotated by the actuator, a lever mounted on the output shaft, and a link (strap) rotatably connected to the lever. To be equipped. The main body of the device is fixed to the inner panel of the door, and the end of the link is fixed to the vehicle body via a hinge. When the output shaft is rotated, the lever rotates and the distance between the device body (output shaft) and the vehicle body (link end) changes. This causes the door to rotate around the hinge. That is, the door can be opened and closed with respect to the vehicle body.

However, in the conventional door opening / closing device, when the door is opened and stopped, the door may vibrate in the opening / closing direction at the open position.

Special Table 2018-505326

An object of the present invention is to provide a door opening / closing device capable of suppressing vibration of a door when it is opened.

In the above-mentioned door opening / closing device, an actuator having a large driving force is used to open / close a heavy door. For this reason, a speed reduction mechanism equipped with a plurality of gears is provided in the main body of the device so that the door can be opened and closed smoothly. The present inventors have found that the vibration of the door generated at the time of stopping after the opening operation by the door opening / closing device is caused by the rattling due to the backlash between the gears of the reduction mechanism. The present invention is based on such new findings.

One aspect of the present invention includes an actuator having a drive source, an output shaft portion capable of forward / reverse rotation, and a reduction mechanism for reducing the driving force of the drive source by a plurality of gears and transmitting the driving force to the output shaft portion, and at least the above. A case in which a drive source is housed and fixed to a door that can be opened and closed on the vehicle body, and a case that is fixed to the output shaft portion and rotates forward to operate the door in the open direction, while rotating in the reverse direction to move the door. A door opening / closing device including a lever that operates in the closing direction, a link that connects the lever and the vehicle body, and an urging member that urges the door in at least one of the opening direction and the closing direction.

According to this configuration, by urging the door with an urging member, it is possible to suppress the occurrence of vibration of the door when the door is automatically opened.

According to the present invention, it is possible to suppress the generation of vibration in the door when the door is opened.

The perspective view which shows the door closed state by the door opening and closing device which concerns on 1st Embodiment. The perspective view which shows the disassembled state of the door opening / closing device of FIG. FIG. 1 is a perspective view showing a state in which FIG. 1 is viewed from different directions. The perspective view which shows the door open state by the door opening and closing device of FIG. FIG. 4 is a perspective view showing a state in which FIG. 4 is viewed from different directions. A perspective view showing a state in which the door opening / closing device is viewed from a direction different from that of FIGS. 1 and 3. FIG. 6 is a perspective view of the hinge of FIG. The perspective view of the door opening / closing device which concerns on 2nd Embodiment. An exploded perspective view of the door opening / closing device according to the second embodiment. FIG. 5 is a cross-sectional view showing an arrangement state of a third coil spring of the door opening / closing device according to the second embodiment.

Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings. It should be noted that the following description is essentially merely an example and is not intended to limit the present invention, its application, or its use.

(First Embodiment)
As shown in FIG. 1, the inner panel 3a of the door 3 is rotatably attached to the vehicle body panel 1 via the hinge 2. The inner panel 3a is provided with the door opening / closing device 4 according to the first embodiment so that the door 3 can be automatically opened / closed via the hinge 2.

As shown in FIG. 2, the door opening / closing device 4 includes an actuator 5, a case 6, a lever 7, a link 8 (see FIG. 3), and an urging member 9.

The actuator 5 includes a motor 10 as a drive source, an output shaft portion 11, and a speed reduction mechanism 12. The motor 10 can be driven in forward and reverse rotation. The output shaft portion 11 has a collar portion 11a on one end side. On the end surface of the flange portion 11a, protrusions 11b are formed at four equally divided positions in the circumferential direction about the axis of the output shaft portion 11. A screw hole (not shown) is formed in the center of the tip portion 11c located on the other end side of the output shaft portion 11. A flanged bolt 19 is screwed into the screw hole to fix the lever 7. The speed reduction mechanism 12 includes a sun gear 13, four planetary gears 14, and an annular body 15, and the driving force of the motor 10 is decelerated by the

gears

13 and 14 and transmitted to the output shaft portion 11. The sun gear 13 is integrated with the rotating shaft of the motor 10. The planetary gears 14 mesh with the sun gears 13, respectively. A protrusion 11b of the output shaft portion 11 is inserted into the center hole of each planetary gear 14. As a result, the planetary gear 14 rotates about the protrusion 11b and rotates about the axis together with the output shaft portion 11. The annular body 15 forms a part of the case 6 and is screwed to the tip end portion of the second case portion 17, which will be described later. Internal teeth 15a are formed on the inner peripheral surface of the annular body 15. A planetary gear 14 meshes with the internal teeth 15a.

Case 6 includes a first case portion 16 and a second case portion 17. The motor 10 is housed in the first case portion 16. The first case portion 16 is fixed to the inner panel 3a so that the axis of the output shaft portion 11 extends in the vertical direction of the vehicle. An annular body 15 and a lid 18 are attached to the tip of the second case portion 17. A through hole is formed in the center of the lid 18, and the output shaft portion 11 projects from the through hole.

As shown in FIG. 3, the tip portion 11c of the output shaft portion 11 is inserted into the through hole formed in the one end portion 7a of the lever 7. Then, the lever 7 can be fixed by screwing the flanged bolt 19 into the screw hole formed in the tip end portion 11c of the output shaft portion 11. As a result, when the output shaft portion 11 rotates, the lever 7 rotates. A bracket 20 is rotatably attached to the other end 7b of the lever 7 by a shaft member 21. A spherical shaft portion is formed at the end portion of the shaft member 21. A locking hole 20a is formed at the tip of the bracket 20.

One end 8a of the link 8 is rotatably supported by a spherical shaft portion of a shaft member 21 provided on the other end 7b of the lever 7. The other end 8b of the link 8 extends to the vehicle body panel 1 side (see FIG. 2) through the opening 3c formed in the inner panel 3a, and is rotatably connected to the hinge 2.

The urging member 9 is composed of a first coil spring 22 which is a first elastic body here. One end 22a of the first coil spring 22 is locked in the locking hole 20a of the bracket 20. The other end 22b of the first coil spring 22 is locked to a U-shaped hook 23 fixed to the inner panel 3a. The urging force of the first coil spring 22 is not so large as to hinder the driving of the actuator 5 that operates the door, and the door 3 can be operated via the lever 7 and the link 8 when the motor 10 is stopped. Less than force.

As shown in FIG. 6 and 7 in detail, the hinge 2 includes a first hinge portion 24 attached to the vehicle body panel 1 side and a second hinge portion 25 attached to the inner panel 3a side.

The first hinge portion 24 is composed of a mounting portion 26 fixed to the vehicle body panel 1 by screwing or the like, and a support portion 27 extending obliquely from the mounting portion 26. In the first hinge portion 24, both side portions 26a of the mounting portion 26 and both side portions 27a of the support portion 27 are bent at right angles to increase the overall rigidity. In the support portion 27, the central portion 27b projects in a mountain shape, and the first pressing portion 30b of the second coil spring 30, which will be described later, is in pressure contact with the inner surface 27c (see FIG. 6). Further, in the support portion 27, both side portions 27a protrude from the central portion 27b, and through holes (not shown) are formed at the tip portions thereof. An L-shaped mounting piece 27e is integrated with the outer surface 27d of the central portion 27b. The other end 8b of the link 8 is rotatably supported by the shaft portion of the shaft member 21 attached to the attachment piece 27e.

The second hinge portion 25 has a plate shape, and a substantially U-shaped bent portion 28 is formed in the central portion. Through holes (not shown) are formed in the facing walls 28a of the bent portion 28, respectively. A pin 29 extending in the vertical direction of the vehicle is fitted in the through hole of the support portion 27 and the bent portion 28, and the second hinge portion 25 is rotatably supported with respect to the first hinge portion 24 about the pin 29 as an axis. ing. A second coil spring 30, which is a second elastic body, is attached to the pin 29. In other words, the second coil spring 30 includes a pair of winding portions 30a, and a pin 29 is inserted in the center of these winding portions 30a.

In the second coil spring 30, the first pressing portion 30b (see FIG. 6) is formed between the pair of winding portions 30a, and the second pressing portion 30c protrudes from each winding portion 30a. The first pressing portion 30b has a substantially U-shape and is in pressure contact with the support portion 27 of the first hinge portion 24, specifically, the inner surface 27c of the central portion 27b. The tip of each second pressing portion 30c is bent at a right angle, and this bent portion is in pressure contact with the flange portion 3b of the inner panel 3a. As a result, the door is urged in the closing direction. The urging force of the second coil spring 30 is not so large as to hinder the driving of the actuator 5 that operates the door 3, and is more than the operating force that can operate the door 3 when the motor 10 of the door opening / closing device 4 is stopped. Is also small.

Next, the operation of the door opening / closing device 4 having the above configuration will be described with reference to FIG.

When the sun gear 13 rotates together with the main shaft (not shown) by driving the motor 10, the output shaft portion 11 is decelerated and rotated by the planetary gear 14 that revolves while rotating in the annular body 15. When the motor 10 is driven to rotate in the forward direction to rotate the output shaft portion 11 in the forward direction, the lever 7 rotates in the forward direction (indicated by the arrow X in FIG. 3). Due to the forward rotation of the lever 7, the link 8 projects from the inner panel 3a side to the vehicle body panel 1 side, and the door 3 rotates from the closed position shown in FIG. 1 to the open position shown in FIG. That is, the door is automatically opened. When the door is opened to a predetermined opening position, the motor 10 is stopped and the opening operation of the door 3 is stopped.

During this period, as shown in FIG. 3, the first coil spring 22 always applies an urging force to the lever 7 in the direction of arrow Y, that is, in the direction of closing the door 3. That is, the tensile force of the first coil spring 22 locked to the hook 23 of the inner panel 3a acts on the lever 7 via the bracket 20. The bracket 20 is rotatably attached to the lever 7. Therefore, the tensile force of the first coil spring 22 acts to smoothly rotate the lever 7 in the reverse direction. As a result, rattling due to backlash between the sun gear 13 and the planetary gear 14 or between the planetary gear 14 and the internal teeth 15a of the annular body 15 is prevented. The amount of rattling due to backlash itself is small, but this amount of rattling is amplified by the rotation of the lever 7, the movement of the link 8, and the opening operation of the door 3. Even if the opening operation is stopped, the door 3 tries to continue to rotate due to the inertial force, and the door 3 bounces (vibrates) based on the amount of rattling. Therefore, by preventing rattling due to backlash, it is possible to suppress the occurrence of vibration when the door 3 is opened. Further, as the opening degree of the door 3 increases, the urging force of the acting first coil spring 22 gradually increases. Further, this urging force also acts on the vehicle body panel 1 via the shaft member 21 attached to the lever 7 and the link 8 rotatably supported by the shaft portion of the shaft member 21. Moreover, the door 3 is urged in the closing direction by the second coil spring 30 provided on the hinge 2. Therefore, the vibration of the door at the time of opening and stopping can be effectively suppressed by the synergistic effect of the first coil spring 22 and the second coil spring 30.

Conversely, when the motor 10 is driven in the reverse direction to rotate the output shaft portion 11 in the reverse direction, the lever 7 rotates in the reverse direction in the direction of the arrow Y in FIG. Due to the reverse rotation of the lever 7, the link 8 moves from the vehicle body panel 1 side to the inner panel 3a side, and the door 3 rotates in the closing direction. That is, the door 3 is automatically closed. During this period, the urging force of the first coil spring 22 and the second coil spring 30 continues to act in the direction of closing the door 3, so that the

gears

13 and 14 do not rattle with each other, and smooth operation can be realized.

According to the door opening / closing device 4 according to the first embodiment, the following effects can be obtained.
(1) Since the lever 7 is urged in the closing direction of the door 3 by the first coil spring 22, there is rattling due to backlash at the meshing portion with the gear such as between the sun gear 13 and the planetary gear 14. Occurrence can be prevented. Moreover, the first coil spring 22 urges the door 3 in the closing direction via the link 8. Therefore, it is possible to suppress the vibration of the door 3 when the door 3 is automatically opened to the open position.
(2) A bracket 20 is attached to one end of the lever 7, a hook 23 is attached to the inner panel 3a, and a first coil spring 22 is locked between the two. It is possible to prevent the occurrence of rattling and suppress the vibration of the door 3. This configuration can be easily adopted even in the existing door opening / closing device 4. Since the first coil spring 22 urges the lever 7 in the reverse rotation direction Y, the first coil spring 22 can suppress the vibration of the door 3 while urging the door 3 in the closing direction via the lever 7. it can.
(3) Since the second coil spring 30 is provided on the hinge 2 to urge the door 3 in the closing direction, it is possible to suppress the occurrence of vibration when the door 3 is open at this point as well. Since the second coil spring 30 urges the door 3 in the closing direction, it is possible to prevent the door 3 from opening more than necessary. Moreover, it is possible to make it difficult to open the door 3 when the door opening / closing device 4 is not driven.

(Second Embodiment)
FIG. 8 shows the door opening / closing device 4 according to the second embodiment. Since the basic configuration of the door opening / closing device 4 is the same as that described in the first embodiment, the corresponding members are designated by the same reference numerals and the description thereof will be omitted. Further, the configurations other than the door opening / closing device 4 are not shown.

As shown in FIG. 9, a third coil spring 31, which is a spirally wound third elastic body, is arranged between the output shaft portion 11 and the lid body 18. As shown in FIG. 10, both ends of the third coil spring 31 are bent, one end of which is the first locking portion 31a and the other end of which is the second locking portion 31b. The output shaft portion 11 is formed with a substantially C-shaped first protruding portion 32 on the collar portion 11a. The first protruding portion 32 is formed in a concentric circle centered on the axis of the output shaft portion 11, and one end in the circumferential direction is the first pressing portion 32a and the other end is the second pressing portion 32b. On the inner surface of the lid 18, a substantially C-shaped second protruding portion 33 is formed so as to project toward the flange portion 11a, similarly to the first protruding portion 32 of the output shaft portion 11. One end of the second protruding portion 33 in the circumferential direction is the first locking receiving portion 33a, and the other end is the second locking receiving portion 33b.

When the lid 18 is attached to the second case 17 together with the annular body 15, the second protrusion 33 of the lid 18 is arranged along the arcuate outer surface of the first protrusion 32 of the output shaft 11. Further, in the neutral position shown in FIG. 10, the circumferential end portions of the first locking receiving portion 33a and the second locking receiving portion 33b are the circumferential end portions of the first pressing portion 32a and the second pressing portion 32b, respectively. It will be flush. Then, the coil-shaped main body portion of the third coil spring 31 is fitted to the outside of the second protruding portion 33, and the first locking portion 31a is locked to the first pressing portion 32a and the first locking receiving portion 33a. , The second locking portion 31b is locked to the second pressing portion 32b and the second locking receiving portion 33b. In this state, regardless of whether the output shaft portion 11 is rotated in the forward or reverse direction, a reverse urging force by the third coil spring 31 acts on the output shaft portion 11. Specifically, when the output shaft portion 11 is rotated clockwise in FIG. 10, the first pressing portion 32a presses the first locking portion 31a locked to the first locking receiving portion 33a. Then, the urging force in the counterclockwise direction by the third coil spring 31 acts on the output shaft portion 11. On the contrary, when the output shaft portion 11 is rotated counterclockwise in FIG. 10, the second pressing portion 32b presses the second locking portion 31b locked to the second locking receiving portion 33b. , The urging force in the forward rotation direction by the third coil spring 31 acts on the output shaft portion 11. The urging force of the third coil spring 31 is not so large as to hinder the driving of the actuator 5 that operates the door 3, and when the motor 10 is stopped, the door 3 is moved via the output shaft portion 11, the lever 7, and the link 8. It is smaller than the operating force that can be operated.

In the door opening / closing device 4 according to the second embodiment, when the motor 10 is driven in the forward direction to rotate the output shaft portion 11 in the forward direction, the output shaft portion 11 rotates in the forward direction and the lever 7 rotates in the forward direction. By rotating the lever 7 in the forward direction, the link 8 projects from the inner panel 3a side to the vehicle body panel 1 side, and the door 3 rotates in the opening direction automatically, as in the first embodiment. Be told.

During this period, from the state of FIG. 10, the second pressing portion 32b of the output shaft portion 11 presses the second locking portion 31b of the third coil spring 31, and the first locking portion 31a of the third coil spring 31 is the first. Since the output shaft portion 11 is maintained in the locked state with the locking receiving portion 33a, the output shaft portion 11 rotates against the urging force of the third coil spring 31. That is, the output shaft portion 11 is maintained in a state in which the urging force of the third coil spring 31 acts. Moreover, the urging force of the third coil spring 31 increases as the amount of rotation (rotation angle) of the output shaft portion 11 in the positive direction increases. Therefore, when the door 3 is rotated to the open position, the backlash between the sun gear 13 and the planetary gear 14 or between the planetary gear 14 and the internal teeth of the annular body 15 due to the urging force of the third coil spring 31. Prevents rattling. As a result, vibration is less likely to occur in the door 3 even immediately after the door 3 is automatically opened.

Conversely, when the motor 10 is driven in the reverse direction to rotate the output shaft portion 11 in the reverse direction, the output shaft portion 11 rotates in the reverse direction and the lever 7 rotates in the reverse direction. By rotating the lever 7 in the opposite direction, the link 8 projects from the vehicle body panel 1 side to the inner panel 3a side, and the door 3 rotates in the closing direction automatically, as in the first embodiment. Will be.

According to the door opening / closing device 4 according to the second embodiment, the following effects can be obtained.
(1) By applying an urging force directly to the output shaft portion 11 by the third coil spring 31, backlash at the meshing portion with the gear such as between the sun gear 13 and the planetary gear 14 is more effective. It is possible to prevent the occurrence of sticking. As a result, it is possible to suppress the vibration of the door 3 when the door 3 is automatically opened to the open position.
(2) Since the third coil spring 31 is housed in the case 6, it is possible to prevent foreign matter such as dust and dirt from adhering to the case and causing damage or deterioration. Therefore, it can be used in a stable state for a long period of time.

The present invention is not limited to the configuration described in the above embodiment, and various modifications can be made.

In the first embodiment, the configuration including the first coil spring 22 which is the first elastic body and the second coil spring 30 which is the second elastic body has been described, but only one of them should be configured. You can also.

In the second embodiment, the configuration including the third coil spring 31 which is the third elastic body has been described, but the configuration including the first coil spring 22 described in the first embodiment may be further described. , The configuration may be provided with the second coil spring 30, or the configuration may be provided with the first coil spring 22 and the second coil spring 30.

As described above, the first coil spring 22, the second coil spring 30, and the third coil spring 31 may be provided independently, or any two may be provided, or all three may be provided. It may be configured as a coil. By providing two rather than one and three rather than two, it is possible to further enhance the effect of suppressing the generation of vibration when the door is opened.

In the above embodiment, the pulling direction of the lever 7 by the first elastic body is the door closing direction, but it may be the opening direction. Further, in the first elastic body, a tensile force is applied to the lever 7, but a compressive force may be applied. Further, although the first coil spring 22 is used for the first elastic body, other elastic members such as urethane can also be adopted.

In the second embodiment, the first protrusion 32 is arranged inside the second protrusion 33 in the radial direction, but the inside and outside are exchanged so that the first protrusion 32 is arranged outside the second protrusion 33 in the radial direction. You may try to do it.

Further, in the second embodiment, the first protruding portion 32 and the second protruding portion 33 are configured to be located at the neutral positions shown in FIG. 10 in the door closed state, but the door is opened or the door is closed. It may be configured to be in the neutral position at any position during the open door state. In this case, since the urging force by the third coil spring 31 acts on the output shaft 11 at any rotation position within the range in which the output shaft 11 can rotate, the same effect can be obtained.

1 Body panel (body)
2 Hinge 3 Door 3a Inner panel 3c Opening 4 Door switchgear 5 Actuator 6 Case 7 Lever 7a One end 7b The other end 8 Link 8a One end 8b The other end 9 Biasing member 10 Motor (drive source)
11 Output shaft 11a Flange 11b Protrusion 11c Tip 12 Deceleration mechanism 13 Sun gear 14 Planetary gear 15 Annulus 15a Internal tooth 16 1st case 17 2nd case 18 Lid 19 Flanged bolt 20 Bracket 20a Locking Hole 21 Shaft member 22 1st coil spring (1st elastic body)
22a One end 22b The other end 23 Hook 24 1st hinge 25 2nd hinge 26 Mounting 26a Side 27 Support 27a Side 27b Central 27c Inner 27d Outer 27e Mounting piece 28 Bending 28a Opposing wall 29 pin 30 2nd coil spring (2nd elastic body)
31 Third coil spring (third elastic body)
31a 1st locking part 31b 2nd locking part 32 1st protruding part 32a 1st pressing part 32b 2nd pressing part 33 2nd protruding part 33a 1st locking receiving part 33b 2nd locking receiving part

Claims

An actuator having a drive source, an output shaft portion capable of forward / reverse rotation, and a reduction mechanism for decelerating the driving force of the drive source by a plurality of gears and transmitting the driving force to the output shaft portion.
At least a case in which the drive source is housed and fixed to a door that can be opened and closed on the vehicle body.
A lever fixed to the output shaft and rotating forward to operate the door in the opening direction, while rotating in the reverse direction to operate the door in the closing direction.
A link connecting the lever and the vehicle body,
An urging member that urges the door in at least one of the opening and closing directions, and
A door opening and closing device.
The door opening / closing according to claim 1, wherein the urging member is provided between the door and the lever, and includes a first elastic body that urges the lever in either the forward rotation direction or the reverse rotation direction. apparatus.
The door opening / closing device according to claim 2, wherein the first elastic body urges the lever in the reverse rotation direction.
The door is rotatably connected to the vehicle body via a hinge.
The door opening / closing device according to any one of claims 1 to 3, wherein the urging member is provided on the hinge and includes a second elastic body that urges the door in the closing direction.
The urging member includes a third elastic body provided in the case and urging the lever in the forward rotation direction and the reverse rotation direction toward the neutral position via the output shaft portion with respect to the case. , The door opening / closing device according to any one of claims 1 to 4.
The third elastic body is formed of a coil spring that is spirally wound and has a first locking portion at one end and a second locking portion at the other end.
The case has a first locking receiving portion in which the first locking portion is locked and a second locking receiving portion in which the second locking portion is locked.
The output shaft portion is locked to the first locking portion that is locked to the first locking receiving portion by forward rotation and to the second locking receiving portion by reverse rotation. The door opening / closing device according to claim 5, further comprising a second pressing portion for pressing the second locking portion.