TWM564075U - Vehicle door opening/closing apparatus - Google Patents

Abstract

The present invention provides an opening and closing device for a vehicle door, which is mainly composed of a shock absorbing tube composed of an elastic material, which is assembled between a fixed cylinder and an outer circumference of a speed reducer constituting the driving unit, and a bearing seat is provided on the transmission side of the speed reducer, and the bearing seat is provided therein. The ring is provided with a bearing, and the end surface of the reducer opposite to the bearing seat is provided with a vibration absorbing plate composed of an elastic material, and an end cover made of an elastic material is disposed between the rotation detector directly connected to the motor and the first end cover The vibration and noise generated by the motor and the speed reducer are difficult to be transmitted to the fixed cylinder and the outer cylinder, and the vibration and noise generated by the speed reducer are greatly reduced to the outside.

Description

Door opening and closing device

The present invention belongs to the technical field of door opening and closing devices, and particularly relates to an opening and closing device for a vehicle door such as a hatchback door, which has the effects of firmness, vibration and low noise.

In the prior art, the device described in Japanese Patent No. 4430044 (issued on March 10, 2010) discloses a device in which a fixing member of a vehicle body and a door are respectively connected to both ends of a cylindrical body, and is enlarged. Or reduce the distance between the fixed components to open or close the door. The increase and decrease of the distance between the fixing members is transmitted to the screw having a predetermined thread groove formed on the outer circumference thereof via the gear unit by the rotation of the motor accommodated in the cylindrical body, and the screw thread spindle nut In a linear motion. However, in the door opening and closing device disclosed in the above prior art document, the motor is transmitted to the screw via the clutch device via the rotation of the reduction gear, but the structure is complicated and the shaft center is assembled with high precision, which is expensive and the combination is difficult. There is also a problem of reduced transmission efficiency.

Moreover, since the reduction gear directly connected to the motor is directly fixed to the metal pipe member, the mechanical vibration generated by the motor and the reduction gear is transmitted to the pipe member made of metal, thereby causing vibration and noise problems. The above is the biggest missing of the current conventional technology, and this lack is a difficult problem to be overcome in the industry.

The main purpose of the present invention is to provide an opening and closing device for a vehicle door, which is mainly composed of a shock absorbing tube composed of an elastic material, which is assembled between a fixed cylinder and an outer circumference of a speed reducer constituting the driving unit, and a bearing seat is provided on a transmission side of the speed reducer. The inner ring of the bearing housing is provided with a bearing, and the end surface of the reducer opposite to the bearing seat is provided with a vibration absorbing plate composed of an elastic material, and is arranged between the rotation detector directly connected to the motor and the first end cover, and is made of an elastic material. The end cover is difficult to transmit vibration and noise generated by the motor and the reducer to the fixed cylinder and the outer cylinder, so that the vibration generated by the speed reducer and the leakage of noise to the outside can be greatly reduced.

The bearing of the inner ring of the bearing housing is provided with a screw shaft which can rotate with the bearing, and the inner ring of the bearing is firmly fixed to the screw by the first flange nut and the second flange nut On the shaft.

The aforementioned bearing that rotates with the screw shaft is a ball bearing.

The screw shaft of the present invention has a small diameter portion at one end, and a guide member is disposed on the small diameter portion. The guide member has a base body, and an outer surface of the base body is provided with a sound absorbing portion, and the sound portion is used to eliminate noise.

In the above-mentioned guide member, the muffling portion provided on the outer periphery of the base body is made of thermoplastic vulcanizate (TPV).

(1)‧‧‧Door opening and closing device

(2) ‧ ‧ first link

(2a) ‧ ‧ holes

(3) ‧ ‧ first end cap

(3a) ‧‧‧ slots

(4) ‧ ‧ first casing

(5) ‧‧‧ fixed cylinder

(6) ‧‧‧Outer tube

(7)‧‧‧Outer cover

(8) ‧‧‧Second link

(8a) ‧ ‧ holes

(9)‧‧‧Second end cap

(9a) ‧‧‧ slots

(10) ‧‧‧second casing

(11)‧‧‧ drive cylinder

(12) ‧‧‧End rings

(12a) ‧‧‧ slots

(13) ‧‧‧ catheter

(13a) ‧‧‧Flange

(14)‧‧‧ Screw shaft

(14a) ‧‧‧Little Trails Department

(14b)‧‧‧Small diameter thread

(14c) ‧‧‧D cut section

(15)‧‧‧ Guides

(15a) ‧‧ 消消部

(15b) ‧ ‧ base

(16)‧‧‧ Feed nut

(16a)‧‧‧Flange

(16b) ‧‧‧ slots

(17)‧‧‧Motor

(18)‧‧‧Reducer

(18a)‧‧‧ Output holes

(19)‧‧‧Rotary detector

(20) ‧‧‧Vibration tube

(21)‧‧‧Vibration plate

(22)‧‧‧ bearing housing

(22b) ‧‧‧ slots

(23)‧‧‧O-ring

(24)‧‧‧Flange nuts

(24a)‧‧‧First flange nut

(24b)‧‧‧Second flange nut

(25) ‧‧‧shims

(26) ‧ ‧ bearing

(27)‧‧‧Compressed springs

(28)‧‧‧ drive unit

(29)‧‧‧Spring pin

(30) ‧‧‧End caps

Fig. 1 is an external view of the door opening and closing device of the present invention; Fig. 2 is a cross-sectional view of the door opening and closing device of Fig. 1 of the present creation; Fig. 3 is an enlarged view of a portion A of Fig. 2 of the present creation; and Fig. 4 is a screw shaft guide A perspective view of the piece; Figure 5 is a perspective view of the vibration absorbing plate.

In order to achieve the above-mentioned technical means for the purpose of the present invention, an embodiment is exemplified, and the structure, characteristics, and effects achieved by the reviewing committee can be explained in detail in the general assembly sequence. Get a better understanding.

Usually, when the door is closed, the door opening and closing device of the present invention will be reduced when the door is closed, and will expand when the door is opened.

Fig. 1 is an external view of the door opening and closing device of the present invention, Fig. 2 is a cross-sectional view thereof, and Fig. 3 is an enlarged view of a portion A of Fig. 2, in which the telescopic device extends from the most reduced position.

One of the first link member (2) and the second link member (8) is attached to the vehicle body, and the other is rotatably assembled to open or close the door door within a predetermined angle range, by controlling the motor (17) described later. When energized, the distance between the first link (2) and the second link (8) is elongated or contracted to open or close the door.

Referring to Fig. 1, the present invention relates to a door opening and closing device (1) comprising: a first sleeve (4), a first joint member (2) integrated with the fixed cylinder (5), and an outer cylinder (6) The integrated outer cylinder cover (7), the second sleeve (10) and the second connecting member (8) are relatively moved to enlarge the distance between the first connecting member (2) and the second connecting member (8) Or shrink.

Please refer to the cross-sectional view of the door opening and closing device of the first drawing of Fig. 2 and the enlarged view of part A of Fig. 2 of the second drawing of Fig. 3.

An end ring (12) is formed on an outer circumference of an end portion of the cylindrical outer cylinder (6), the second coupling member (8) side is formed in a cylindrical shape, and the outer cylinder (6) is located at a position of the groove (12a). The inner side is deformed and fixed.

The second end cover (9) is formed on the outer circumference of the end portion of the driving cylinder (11), and is formed on the side of the second coupling member (8) as a cylindrical driving cylinder (11) at the position of the groove (9a) formed, Internally deformed and fixed.

Made of a metal such as a stainless steel rod, and a screw shaft (14) having a spiral groove formed at a predetermined position in the longitudinal direction of the outer peripheral portion, having a small diameter portion (14a) formed at one end thereof, and the other end The small-diameter portion at the portion is formed with a small-diameter threaded portion (14b) having a thread on the outer circumference, and a D-cut portion (14c) of a predetermined length is formed at the tip end portion of the small-diameter threaded portion (14b).

Referring to Fig. 4, a guide member (15) is provided on the small diameter portion (14a) of the screw shaft (14). The guide member (15) has a base body (15b) made of sintered metal or the like, and the base body (15b) The outer peripheral portion is provided with a sound absorbing portion (15a) formed of, for example, a thermoplastic vulcanizate (TPV), and the small diameter portion (14a) of the screw shaft (14) is deformed at the distal end and fixed.

Further, the screw shaft (14) has a threaded portion formed at an outer peripheral portion thereof, and the corresponding feed nut (16) is screwed into the inner peripheral portion, and in this state, the drive cylinder (11) to which the second end cover (9) is fixed is attached. Insert the screw shaft (14) on the open end side, insert the flange portion (16a) of the feed nut (16) into the end of the drive cylinder (11), and the feed nut (16) is deformed inwardly by the outer circumference thereof. The groove (16b) fixes the drive cylinder (11).

The second end cap (9) is fixed, and the screw shaft (14) and the feed nut (16) are mounted from opposite sides of the second end cover (9) of the drive cylinder (11) to fix the end ring (12) The cylinder (6) is covered and combined from the end ring (12) side, and the substantially cylindrical duct (13) is made of a resin material or the like, and has a flange portion (13a) at its end portion, and is provided from the flange portion (13a) side. Embedded in the outer peripheral portion of the drive cylinder (11) and inserted, the screw shaft (14) is rotated as needed to move the feed nut (16) to a position close to the guide member (15), so that the next assembly can be easily assembled.

From the release end side of the outer cylinder (6), a compression spring (27) made of a metal material such as a spring is inserted into a gap between the outer circumference of the duct (13) and the inner circumference of the outer cylinder (6).

In the gap between the outer diameter of the compression spring (27) and the inner diameter of the outer cylinder (6) in the assembled state, a metal fixing cylinder (5) such as a cylindrical carbon steel pipe is inserted into the opening of the outer cylinder (6). End side.

The bearing housing (22) is made of a metal material or the like, and an elastic member O-ring (23) having a circular cross section previously formed in the O-ring groove (22a) is pre-assembled and installed from the release end of the fixed cylinder (5). To the inner diameter The compression spring (27) is held in a compressed state by using an appropriate jig or the like as needed, and the small-diameter screw portion (14b) of the screw shaft (14) is exposed through the inner diameter hole of the bearing housing (22).

The screw shaft (14) exposed through the bearing housing (22) has a small-diameter thread portion (14b) formed of a metal material or the like and formed into a tubular inner diameter by a small-diameter thread portion (14b) of the screw shaft (14). The bearing (25) made of a standardized ball bearing is fixed by using a first flange nut (24a) and a second flange nut (24b) formed with internal threads adapted to the external threads.

In order to fix the bearing (26) to the screw shaft (14), first, screw the first flange nut (24a) from the flange side of the small-diameter thread portion (14b) of the screw shaft (14) to the innermost portion, and then Fit the inner diameter of the bearing (25) to the outer diameter of the tube portion of the first flange nut (24a) and tighten the second flange nut (24b) until the inner ring of the bearing (25) is securely fastened.

Next, a drive unit (28) including a motor (17), a speed reducer (18), a rotation detector (19), a vibration absorbing tube (20), and a vibration absorbing plate (21) will be described.

The speed reducer (18) is directly connected and fixed to the end of the output shaft side of the motor (17) to which the current is supplied, and generates a rotational force, and the rotation detector (19) is directly fixed to the other side of the output shaft of the motor (17). An end, power source (not shown) for feeding and outputting the output of the rotation detector (19).

The speed reducer (18) has a D-shaped output hole (18a) fitted in the D-cut portion (14c) forming one end portion of the screw shaft (14), and is capable of reducing the rotation thereof while the motor (17) The rotation of the ) is transmitted to the screw shaft (14).

A vibration absorbing tube (20) made of a resilient material such as synthetic rubber is fixed to cover the outer peripheral portion of the speed reducer (18). At the end portion on the output hole (18a) side of the speed reducer (18), a vibration absorbing plate (21) made of an elastic material such as synthetic rubber having irregularities on the outer circumference is fitted into an end portion of the speed reducer (18).

In order to incorporate the drive unit (28) constructed as described above into the door opening and closing device (1), in the outer ring portion of the bearing (26) that has been loaded and fixed to the screw shaft (14), made of sintered metal or the like The gasket (25) contacts, the output hole (18a) of the speed reducer (18) of the drive unit (28) and the screw shaft exposed through the bearing housing (22) The D notch portion (14c) of (14) is coupled, and is pulled out from the inside of the outer cylinder (6) to the position where the fixed cylinder (5) completely covers the driving unit (28) while resisting the spring force of the compression spring (27). An end cap (30) made of an elastic material such as ethylene-propylene rubber covers the end of the rotation detector (19) of the drive unit (28) on the inner diameter portion of the release end of the fixed cylinder (5), Inserting a first end cap (3) made of a sintered metal material or the like, the fixing cylinder (5) being at the first end at a position of the groove (3a) of the first end cap (3) located inside the fixed cylinder (5) The outer peripheral portion of the cover (3) is deformed inwardly to fix the first end cap (3) to the fixed cylinder (5).

The fixed cylinder (5) is deformed inward at a position of the groove (22b) formed at the outer peripheral portion of the bearing housing (22), and the bearing housing (22) is fixed to the fixed cylinder (5).

Fixing the first sleeve (4) to cover the ends of the first end cap (3) and the fixing cylinder (5), and fixing the first sleeve (4) to the first joint member made of a metal material such as a sintered alloy The integral hole (2a) of (2) is inserted into the projection of the first end cap (3), and the spring pin (29) wound by the metal plate is pressed to mount the first coupling member (2).

Similarly, the second sleeve (10) is fixed to cover the ends of the second end cover (9) and the outer cylinder (6), and the second coupling member (8) made of a metal material such as a sintered alloy is inserted into the integration. The hole (8a) is inserted into the projection of the second end cover (9), and the spring pin (29) is pressed as shown to mount the second coupling member (8), thus completing the creation of the door opening and closing device (1).

In the present invention, the bearing (26) rotatably holds a screw shaft (14) connected to a driving unit (28) including a motor (17) and a speed reducer (18), and the bearing (26) can be a ball bearing, a bearing The inner ring of (26) is firmly fixed to the screw shaft (14) by the first flange nut (24a) and the second flange nut (24b), and the friction loss due to the rolling friction in the bearing (26) Small, so the rotational movement of the drive unit (28) can be effectively converted into linear motion by the screw shaft (14) and the feed nut (16), so that the door opening and closing device of the present invention is enlarged or contracted to open and close the door.

In addition, due to the gap inside the bearing (26), the axial movement of the screw shaft (14) is limited to a small distance, so the vibrations generated during driving of the automobile or the like, etc., the components in the door opening and closing device (1) of the present invention can be Effectively reduced, reliability is improved.

Further, the vibration absorbing tube (20) composed of an elastic material is assembled between the fixed cylinder (5) and the outer circumference of the speed reducer (18) constituting the driving unit (28), and the transmission side of the speed reducer (18) is provided with a bearing. The seat (22), the end surface of the speed reducer (18) opposite to the bearing housing (22) is provided with a vibration absorbing plate (21) made of an elastic material, and a rotation detector (19) and a portion directly connected to the motor (17). An end cap (30) made of an elastic material is disposed between the end caps (3), and vibration and noise generated by the motor (17) and the speed reducer (18) are difficult to be transmitted to the fixed cylinder (5) and outside. Since the cylinder (6) can greatly reduce the vibration generated by the speed reducer (18) and the leakage of noise to the outside.

In summary, the "door opening and closing device" disclosed in this creation is a past, and has not been seen in publications published at home and abroad. It has a novel patent requirement, and this creation can eliminate the lack of customary technology. And to achieve the design purpose, has also fully complied with the patent requirements, 提出 apply in accordance with the law, I would like to ask your review board to review, and give the patent in this case, really feel good.

However, the above is only one of the preferred embodiments of this creation, and is not intended to limit the scope of this creation. For those skilled in the art, the equivalent structural changes made by this creation specification and the scope of patent application are used. It should be included in the scope of this creation patent.

Claims (5)

A door opening and closing device is mainly composed of a vibration absorbing tube composed of an elastic material, which is assembled between a fixed cylinder and an outer circumference of a speed reducer constituting a driving unit, and a bearing seat is arranged on a transmission side of the speed reducer, and a bearing and a bearing are arranged in the inner ring of the bearing seat The inner ring is provided with a screw shaft that can rotate with the bearing, and the opposite end surface of the reducer and the bearing seat is provided with a vibration absorbing plate composed of an elastic material, and is disposed between the rotation detector directly connected to the motor and the first end cover. An end cap made of an elastic material to restrict vibration and noise generated in the motor and the reducer from being transmitted to the outside of the fixed cylinder and the outer cylinder to greatly reduce leakage of vibration and noise generated by the speed reducer to the outside. The door opening and closing device according to claim 1, wherein the inner ring of the bearing that rotates with the screw shaft is firmly fixed to the screw shaft by the first flange nut and the second flange nut. The door opening and closing device according to the first or second aspect of the invention, wherein the bearing that rotates with the screw shaft is a ball bearing. The door opening and closing device according to claim 1, wherein the screw shaft has a small diameter portion at one end, and a guide member is disposed on the small diameter portion, the guide member has a base body, and the outer periphery of the base body is provided with a sound absorbing portion. Use the muffler to eliminate noise. The door opening and closing device according to claim 4, wherein the muffling portion provided on the outer circumference of the guide base is made of thermoplastic vulcanizate.