JPH0345516Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to an automatic opening device for doors such as side doors in automobiles, and particularly relates to an improvement in an automatic opening device for doors opened and closed by a four-link door hinge using a four-bar rotation link.

[Conventional technology]

Conventionally, as a door hinge for a side door of an automobile, there is a so-called 4-link door hinge that utilizes a 4-bar rotation link, as shown in FIG. This 4-link door hinge consists of a body side base 2 attached to the outer surface of a body, for example, a front pillar 1, and a front end panel 4 of a side door 3.
a door-side base 5 attached to the body-side base 2; and a rotating shaft 2 attached to two spaced points on the body-side base 2.
A, 2B, rotary shafts 5A, 5B that are separately attached to the door side base 5, an outer link 6 whose both ends are rotatably connected to the rotary shaft 2A and the rotary shaft 5A, respectively, and the rotary shaft 2B, 5B, and an inner link 7 rotatably attached to both ends thereof. Here, in the four-link door hinge shown in FIG.
Each of B has an upper and lower pair, and a corresponding pair of upper and lower rotary outer links 6 and inner links 7 are provided. A 4-link door hinge using such a 4-section rotating link allows the side door 3 to open while sliding forward without protruding significantly outward from the outer surface in the width direction of the vehicle body when the side door 3 is opened. Therefore, the side space required for opening and closing the door when getting in and out of the automobile may be small, and the ease of getting in and out of the vehicle is improved. Furthermore, in order to improve the ease of getting on and off, it is possible to use a side door opening/closing device that is conventionally used in taxis, etc., but the side door, which is opened and closed by a 4-link door hinge, has a trajectory when it is opened. However, since the connecting rod moves largely toward the outside and the front of the vehicle, the connecting rod for transmitting the driving force of the opening/closing device to the side door becomes inclined with respect to the side door, resulting in a problem that it cannot be applied. In response, the present applicant has proposed in Japanese Patent Application No. 60-93149 an automatic door opening device that uses a four-link door hinge and is capable of automatically opening a door. As shown in FIGS. 6 to 8, this automatic door opening device includes the four-link door hinge 10 of a side door 16 attached to the body 14 side of an automobile 12 via the four-link door hinge 10.
A lever 18 rotatably attached to an outer rotating shaft 16A on the door side and a roller 18A provided on the body side base 20 of the four-link door hinge 10 and attached to the free end of the lever 18 are in rolling contact. and a rail 22 whose distance from the outer rotating shaft 16A is made different depending on the rotation angle of the lever 18; It is comprised of a drive device 26 that drives the device to an open position, an open position, and a non-open position in this order. Further, reference numeral 28 in the figure indicates a door side base of the four-link door hinge 10 attached to the end panel 16C of the side door 16, and 16B indicates a door side base 28 on the door side base 28, inside the outer rotation axis 16A, parallel to this. Installed inner rotating shaft, 30
A is an outer rotating shaft rotatably attached to the body side base 20, 30B is an inner rotating shaft, and 34 is an outer link whose both ends are rotatably connected to the outer rotating shafts 16A and 30A. , 36
1 and 2 respectively show inner links whose both ends are rotatably connected to the inner rotating shafts 16B and 30B. The drive device 26 includes a motor 38, a drive link 40 that is reciprocated approximately parallel to the rail 22 by the motor 38, one end of which is connected to the drive link 40 via a ball joint 42, and the other end of the drive link 40 that is connected to the drive link 40 via a ball joint 42. and a connecting rod 44 whose end is swingably connected to the lever 18. Therefore, according to this automatic door opening device, the opening mechanism 24 driven by the drive device 26 pushes the door side member outward by a certain amount and opens it with one operation of the drive device 26. , and then return to the current position. Thereby, the door 16 can be opened and closed as desired from now on, regardless of the opening mechanism 24 and its drive device 26.

[Problem that the invention attempts to solve]

However, in the above-mentioned conventional automatic door opening device equipped with a 4-link door hinge, when the 4-link door hinge is driven, the degree of door opening is uniquely determined by the amount of movement of the ball joint generated by the drive mechanism. Therefore, if the door is automatically opened more than the user needs, there is a problem that it becomes difficult to adjust the opening degree of the door.

[Purpose of invention]

This idea was made in view of the above-mentioned conventional problems, and allows the door to open as far as the user desires without having to adjust the amount of movement of the ball joint generated by the drive mechanism. To provide an automatic opening device whose opening degree can be easily adjusted.

[Means for Solving the Problems] This invention provides a lever rotatably attached to a rotating shaft on the door side of the 4-link door hinge in a side door attached to the body side of an automobile via the 4-link door hinge. , a rail provided on the body-side base of the four-link door hinge, on which a roller attached to the free end of the lever can roll and whose distance from the rotation axis varies depending on the rotation angle of the lever; an opening mechanism configured, a drive link that reciprocates substantially parallel to the rail, and a connecting rod that has one end connected to the drive link and the other end swingably connected to the lever. An automatic door opening device comprising: a drive mechanism;
The above object is achieved by providing the connecting rod with connection length changing means for changing the length of the connection of the connecting rod to the drive link and lever. Further, in an embodiment of the invention, the connection length changing means is provided with a threaded portion formed at one end of the connecting rod, and a ball joint that is screwed into the threaded portion and connected to the drive link. The above object is achieved by comprising a lock nut and a lock nut that is screwed into the threaded portion and fixes the ball joint to the connecting rod. Another embodiment of the present invention is that the connection length changing means is connected to a mounting shaft that pivots the connecting rod and the lever, and that the mounting shaft is connected to the connecting rod in a direction perpendicular to the longitudinal direction of the connecting rod. The above object is achieved by comprising a plurality of connecting rod-side mounting holes provided spaced apart in the longitudinal direction of the connecting rod, into which the connecting rod is inserted, and a lever-side mounting hole through which the mounting shaft is inserted. It is something.

[Effect]

In this idea, the connecting rod
By providing a connection length changing means for changing the connection length of the connecting rod to the drive link and lever, the connection length of the connecting rod can be easily changed.
As a result, the degree of opening of the door can be easily adjusted so that the door opens as desired by the user without adjusting the amount of movement of the ball joint obtained by the drive mechanism.

【Example】

Examples of this invention will be described below with reference to the drawings. Incidentally, the same members as those in the conventional example shown in FIGS. 6 to 8 are given the same reference numerals as in the conventional example, and the explanation thereof will be omitted. In this embodiment, as shown in FIGS. 1 to 3, the vehicle 1
Side door 16 attached to the body 14 side of 2
A lever 18 is rotatably attached to the outer rotating shaft 16A on the door side of the four-link door hinge 10, and a lever 18 is provided on the body-side base 20 of the four-link door hinge 10 and attached to the free end of the lever 18. an opening mechanism 24 consisting of a rail 22 on which a roller 18A can roll and whose distance to the outer rotating shaft 16A varies depending on the rotation angle of the lever 18; a motor 38; 22, and a connecting rod 44 having one end connected to the drive link 40 and the other end swingably connected to the lever 18. 26, the connecting rod 44 is provided with connection length changing means 60 for changing the connection length of the connecting rod 44 to the drive link 40 and the lever 18. It was established. As shown in FIG. 3, the connection length changing means 60 is screwed into a threaded portion 62 formed at one end of the connecting rod 44, and is screwed into the driving link 40. The ball joint 42 to be connected is screwed into the threaded portion 62,
A lock nut 64 fixes the ball joint 42 to the connecting rod 44. The motor 38 and the drive link 40 are arranged inside the panel of the side door 16, and the drive link 40
is pivotally supported at its lower end to the panel of the side door 16 by a bracket 46. The motor 38 has a motor arm 4 on its output shaft.
8, and the drive link 40 is provided with an elongated hole 50 that slidably engages with a pin 48A attached to the tip of the motor arm 48. The bracket 46 is attached approximately vertically below the rotational center axis of the motor 38, and the bracket 46 is attached every time the motor arm 48 of the motor 38 rotates once.
The drive link 40, which is pivotally supported at 6, is configured to swing back and forth once. The ball joint 42 is connected to the drive link 40
The connecting rod 44 extends through the end panel 16C of the side door 16 and projects into the four-link door hinge 10. Next, the operation of the apparatus of the above embodiment will be explained. When a passenger gets on or off, the motor 38 is turned on,
Rotate this once. Motor arm 4 directly connected to the rotating shaft of motor 38
8 rotates half a turn, the drive link 40, which is slidably connected to the pin 48A at the tip of the motor arm 48 through the elongated hole 50, is swung around the bracket 46 to the position indicated by the chain double-dashed line in FIG. Ru. This swinging motion of the drive link 40 is transmitted to the lever 18 via the ball joint 42 and the connecting rod 44. When the lever 18 is rotated counterclockwise in FIG. 2 by the connecting rod 44, the roller 18A provided at the tip of the lever 18 rolls into contact with the rail 22 of the body side base 20. Outer side rotating shaft 16A for this rail 22
The distance varies depending on the rotation angle of the lever 18, and when the drive link 40 swings to the maximum position indicated by the two-dot chain line in FIG.
It is made perpendicular to Therefore, the outer rotating shaft 16A is driven by the lever 18 counterclockwise in FIG. 2, that is, in the direction in which the side door 16 is opened. At this time, the inner rotation shaft 16B of the side door 16 is also swung counterclockwise in FIG. 2, and the side door 16 is opened by a length corresponding to the difference in rotation angle of the lever 18. . Also, for the drive link 40 of the roller 18A,
Although the position changes in the vertical direction in FIG. 2, this is absorbed by the ball joint 42. Immediately after the side door 16 is opened, the motor 38 rotates the remaining half rotation, and the drive link 40 is returned by the motor arm 48 to the position indicated by the solid line in FIG. 2, that is, to the original position. Therefore, the lever 18 is also pushed back clockwise around the outer rotating shaft 16A via the connecting rod 44. At this time, the lever 18 is moved to the outer rotating shaft 16A.
Since it only idles around , it does not affect the opening degree of the side door 16 in any way. From this open state, the side door 16 can be freely opened and closed manually by the occupant according to a normal opening and closing trajectory. Furthermore, during this opening and closing, the outer link 34 is swung around the outer rotating shaft 16A;
Since the lever 18 is free with respect to the outer rotating shaft 16A, the opening mechanism 24 and the drive mechanism 26 do not interfere with the free opening and closing of the side door 16. In this embodiment, the connection length changing means 60 is screwed into a threaded portion 62 formed at one end of the connecting rod 44 and connected to the drive link 40. The lock nut 64 is configured to include a ball joint 42 and a lock nut 64 that is screwed onto the threaded portion 62 and fixes the ball joint 42 to the connecting rod 44, thereby removing the connecting rod 44 from the opening mechanism 24. Loosen the lock nut 64, rotate the connecting rod 44, and
By changing the screwing position between the ball joint 2 and the ball joint 42, the connection length of the connecting rod 44 can be changed. As a result, for example, if the rod connection length is increased, the roller 18A will be separated from the rail 22 to the outside of the vehicle when the door is closed. Therefore, in the amount of movement of the ball joint 42, the roller 18A and the rail 2
2 contact sliding distance can be reduced. This reduces the rotation angle of the lever 18,
The amount of movement of the outer rotating shaft 16A toward the outside of the vehicle can be reduced. This outer rotating shaft 16A
By reducing the amount of movement of the door, the degree of door opening can be reduced. In addition, the adjustment to reduce the opening degree of the door is made by adjusting the threaded portion 62 of the connecting rod 44 and the ball joint 4.
This is done by changing the screwing position with 2.
The door opening reduction amount can be freely set. In the above embodiment, the connection length changing means 60 is composed of a threaded portion 62, a ball joint 42 and a lock nut 64 that are screwed into the threaded portion 62, but this invention is not limited to this. For example, as shown in FIG.
The mounting shaft 72 is inserted through the connecting rod 44 in a direction perpendicular to the longitudinal direction thereof. It can also be used as a connection length changing means 70 comprising a plurality of connecting rod side attachment holes 74 provided spaced apart in the longitudinal direction of the connecting rod 44 and a lever side attachment hole 76 through which the attachment shaft 72 is inserted. good. In this case, the mounting shaft 72 is inserted into one of the plurality of connecting rod side mounting holes 74 provided spaced apart from each other in the longitudinal direction of the connecting rod 44. The opening degree of the door can be adjusted by extending the length of the connection.

[Effect of the idea]

Since this invention is configured as described above, the amount of door opening can be easily adjusted so that the door opens to the position desired by the user, without having to adjust the amount of movement of the ball joint generated by the drive mechanism. It has the excellent effect of being able to

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the automatic door opening device according to the present invention, Fig. 2 is a plan view showing the main parts of the embodiment, and Fig. 3 is an enlarged view of the main parts of the embodiment. 4 is a plan view showing an enlarged main part of another embodiment, FIG. 5 is a plan view showing the process of opening and closing a door using a conventional 4-link door hinge, and FIG. A side view showing a car equipped with a conventional automatic door opening device, FIG. 7 is a perspective view showing the same conventional automatic door opening device, and FIG. 8 is an enlarged view of the main parts of the conventional automatic door opening device. FIG. 10...4-link door hinge, 12...automobile, 14...body, 16...side door, 16
A, 30A...Outer side rotating shaft, 16B, 30B
...Inner side rotating shaft, 18...Lever, 20...
Body side base, 22... Rail, 24... Opening mechanism, 26... Drive device, 28... Door side base, 34... Outer link, 36... Inner link, 38... Motor, 40... Drive link , 42
... Ball joint, 44 ... Connecting rod, 52 ... Opening member, 60, 70 ... Connection length changing means, 62 ... Threaded portion, 64 ... Lock nut, 72 ... Mounting shaft, 74, 76...Mounting hole.

Claims (1)

[Claims for Utility Model Registration] (1) A lever rotatably attached to a rotating shaft on the door side of the four-link door hinge in a side door attached to the body side of an automobile via the four-link door hinge; A rail provided on the body-side base of the link door hinge, on which a roller attached to the free end of the lever can roll, and the distance from the rotation axis varies depending on the rotation angle of the lever. an opening mechanism; a drive link that reciprocates substantially parallel to the rail; one end is connected to the drive link;
a drive mechanism comprising a connecting rod, the other end of which is swingably connected to the lever; An automatic door opening device characterized by being provided with connection length changing means for changing the connection length to a drive link and a lever. (2) The connection length changing means includes a threaded portion formed at one end of the connecting rod, a ball joint screwed into the threaded portion and connected to the drive link, and the threaded portion. is screwed into
2. The automatic door opening device according to claim 1, comprising a lock nut for fixing the ball joint to a connecting rod. (3) The connection length changing means includes a mounting shaft that connects the connecting rod and the lever;
The mounting shaft is inserted through a plurality of connecting rod side mounting holes provided spaced apart in the longitudinal direction of the connecting rod, into which the mounting shaft is inserted in a direction perpendicular to the longitudinal direction of the connecting rod. The automatic door opening device according to claim 1, which is comprised of a lever side mounting hole.