JPH054943U - Seat reclining device for automobiles - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] The seat of a vehicle, especially the front seat, when the occupant takes an appropriate sitting posture, the seat
We propose a seat reclining device that adjusts the angle of the bag, which can be adjusted quietly and without impact even during operation. [Structure] A vehicle seat, in particular, a front seat or a hinge mechanism coupled to the front seat is provided around the rotary shaft 6,
A seat reclining device is preferably constructed by interposing a bearing member 7 of a plain bearing so that its bearing layer contacts the rotating shaft.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a seat reclining device for an automobile, and more specifically, an automobile seat. The angle at which the seat back of the seat can be smoothly adjusted according to the driver's sensitivity The present invention relates to a seat reclining device for an automobile having an adjusting mechanism.

[0002]

[Prior art]

  BACKGROUND ART Conventionally, a vehicle seat, particularly a front seat, is mounted on a vehicle by a driver or others. Various seat adjusters are used to ensure that the members can take a comfortable sitting posture. The front sheet can be moved and rotated. One of this seat adjuster For example, when rotating the seat back, that is, the seat back, Seat reclining device proposed as an angle adjustment mechanism for adjusting the rotation angle of Has been done. This angle adjustment mechanism is generally a recliner or seat recliner. It is called a hinge and adjusts the rotation angle using spur gears, screws, oil, etc. Among these, the fine adjustment method for adjusting the rotation angle of the seat back in stages A type and a stepless adjustment method of steplessly adjusting the angle have been proposed. This In any of these reclining devices, the angle adjusting mechanism has a seat back. A hinge mechanism is connected to the lower end of the seat. The end is rotatably supported by the rotating shaft, and when the rotation of the desired angle is achieved, -To lock the bag or the member connected to the bag.

[0003]   In addition, the angle adjustment mechanism of the former fine adjustment type reclining device interposes a ratchet. Many of them are configured to rotate, and this ratchet mechanism rotates around the rotation axis. The stepless adjustment type reclining device is equipped with a pair of spur gears. The angle of the seat back is adjusted by rotating these spur gears. However, in any type of reclining device, for example, For example, a ratchet or a spur gear on one side can be rotated. Since it was in direct contact with the vehicle, vibration and shock will occur, so the rider will not always feel comfortable. Can't give.

[0004]   In other words, the angle adjustment mechanism in the reclining device is comfortable for the driver and other passengers. Considering fine adjustment of the seat back angle to give a proper sitting posture Although it is involved, contact with the rotating shaft is No consideration has been given to the vibrations and shocks caused by. Especially angle adjustment At times, the seat back may be loaded with a heavy load of a driver or other occupant, Since there is little consideration for the slidability with respect to the rolling axis, the Vibrations and shocks are given to the occupant such as a person who has been transferred, which deteriorates the riding comfort. Sliding contact Since grease is used on the part, it may become dirty, and special consideration is given to dirt. This is the current situation because it has been created and has become complicated as a device.

[0005]

[Problems to be solved by the device]

  The present invention aims to solve the above-mentioned drawbacks, and more specifically, it is connected to the lower end of the back sheet. In a hinge mechanism that rotatably and rotatably supports each other, a bearing member is placed around the rotary shaft. Is installed to smoothen the rotation with respect to the rotating shaft, and the bearing member is interposed. With the lubrication mechanism formed by the Appropriate bearing member for reclining device that can effectively prevent contamination due to lubricant supply We propose a seat reclining device for automobiles.

[0006]

[Means for Solving the Problems]

  That is, the present invention adjusts the angle of the seat back in a vehicle seat. In seat reclining equipment, this seat back can be freely rotated at its lower end. It is characterized in that a bearing member is provided around the rotary shaft supported by the bearing.

[0007]   The configuration and operation of the present invention will be described in detail below with reference to the drawings. The explanation is as follows.

[0008]   1 is a partial layout view of a reclining device according to an embodiment of the present invention. FIG. 2 is a partial layout view of a reclining device according to another embodiment of the present invention. FIG. 3 is an explanatory diagram in which a part of FIG. 2 is enlarged.

[0009]   First, in FIG. 1, reference numeral 1 is a front seat seat back, and 2 is a ratchet. 3 is a cam, 4 is a pole, 5 is a knob for a reclining adjuster, and 6 is a rotation. A shaft 7 is a bearing member. In this reclining device, the seat bar A hinge mechanism is connected to the lower end of the rack 1, and the ratchet 2 is provided as a part of the mechanism. It is provided. Moreover, these, for example, the ratchet 2 rotates around the rotation axis 6. It is supported freely. Therefore, when adjusting the angle of the seat back 1 of the front seat When the knob 5 is pushed down, the cam 3 is disengaged from the meshing portion 2a of the ratchet 2. The clutch is connected to the seat back 1 around the rotation shaft 6 in this state. The seat 2 rotates and the angle of the seat back 1 is adjusted as desired.

[0010]   On the contrary, when the knob 5 is pushed up in the direction of the arrow, the cam 3 engages with the ratchet 2. The seat back 1 is fixed by engaging the portion 2a, and the angle adjustment is completed.

[0011]   Next, in the reclining device configured as described above, the circumference of the rotary shaft 6 The bearing member 7 is provided on the shaft so that the rotary shaft 6 can rotate under the interposition of the bearing member 7. To A ball bearing or a plain bearing can be used as the bearing member 7. It However, ball bearings are complicated in design and expensive. Plain bearings are preferred. As a plain bearing, on the back metal steel used in internal combustion engines There are sliding bearings with a double layered bearing alloy such as aluminum or copper. These bearings are It is used via oil in fuel engine applications.

[0012]   Next, the representative bearings are used without light load such as office equipment and without refueling. Sliding bearings, PTFE resin (also called oil-free bearings and dry bearings) Mold a lubricating resin typified by polytetrafluoroethylene) or bronze powder on the back metal. Sintered and coated with a lubricating resin on the porous part. Other bronze powder compacted A plain bearing is formed by molding and impregnating its porous portion with oil.

[0013]   The bearing used in the present invention should be a reclining device. The feature is that the load is relatively small, the movement is relatively slow, and it operates frequently. Since it is not a conventional one, the conventional plain bearing can be applied and used as it is. However, the lubrication mechanism of the reclining device is used by directly contacting the ferrous gear and the shaft. The reality is that they are used or are given grease.

[0014]   Therefore, in view of such a current situation, as a result of experimenting with various bearing materials, The operation by receiving material was smooth and no difference was seen. Also, metal bearings Is not required to use the backing metal for the purpose of reinforcing rigidity, etc. Obtained.

[0015]   Next, examples will be described.

[0016]   The slide bearing used in this experiment was a cylindrical bush type. Also, conventional In addition to the general-purpose bearings, good results were obtained with bearings of the following materials and shapes. 1.Processing, moldability, inexpensive polyethylene resin molding 2, Al-20% Sn casting processed product 3. Bronze was sintered on the back metal and impregnated with PTFE resin. The surface is quite bronze It was exposed (the bearing surface of the conventional product is covered with a thin film of resin).

[0017]   In addition to the reclining device with the ratchet interposed as described above, FIG. And a stepless adjustable reclining with a pair of spur gears interposed as shown in FIG. The device can also be configured by interposing a bearing member around the rotary shaft.

[0018]   2 and 3, reference numeral 10 is a plate, 11 is a knob, and -The seat 10 is connected to the lower end of the front seat back 1 and is rotated by the knob 11. It is configured so that the angles of the plate 10 and the seat back 1 can be adjusted. It That is, as shown in FIG. 3, the internal gear 12 is formed inside the rotating knob 11. The external gear 13 meshes with the internal gear 12, and the external gear 13 is While being rotatably supported, the plate 10 is connected to the external gear 13. . Therefore, when the knob 11 is rotated, the internal gear 12 provided inside the knob 11 is rotated. Therefore, the external gear 13 rotates around the rotating shaft 6, and the seat back 1 is moved as shown in FIG. Rotate to the position indicated by the chain line. A bearing member 7 is provided around the rotary shaft 6 Let Also in this case, for example, as in the example shown in FIG. The surface of the rolling shaft 6 is contacted. When the slide bearing is installed in this way, 6, the external gear 13 rotates smoothly, and the driver is It will not be given to any passenger and will not be contaminated with lubricating oil such as grease.

[0019]   As the bearing member 7, as in the example shown in FIG. The operation of the seat back became extremely smooth through the slide bearing.

[0020]

[Effect of device]

  As described in detail above, according to the present invention, the angle of the seat back of the automobile seat is adjusted. It is a seat reclining device for adjusting, and the seat back is attached at its lower end. A bearing member is provided around a rotating shaft that is rotatably supported. It is a thing.

[0021]   Therefore, the lower end of the seat back or the hinge mechanism or the like connected to it should be attached to the rotary shaft. On the other hand, the occupant smoothly rotates, and the occupant can smoothly take an appropriate sitting posture.

[Brief description of drawings]

FIG. 1 is a partial layout view of a fine adjustment type reclining device according to an embodiment of the present invention.

FIG. 2 is a partial layout view of a continuously variable reclining device according to another embodiment of the present invention.

FIG. 3 is an explanatory diagram in which a part of FIG. 2 is enlarged.

[Explanation of symbols]

1 Front seat seat back 2 ratchet 3 cams 4 poles 5 Knob for reclining adjuster 6 rotation axes 7 Bearing member

Claims (3)

[Scope of utility model registration request] 1. A seat reclining device for adjusting an angle of a seat back in a vehicle seat, wherein a bearing member is provided around a rotary shaft rotatably supporting the seat back at a lower end thereof. A seat reclining device for an automobile, characterized in that 2. The seat reclining device for an automobile according to claim 1, wherein the hinge device is configured as a mechanism capable of finely adjusting the seat back in a stepwise manner via at least a ratchet mechanism. . 3. The seat reclining device for an automobile according to claim 1, wherein the hinge device is configured as a mechanism capable of continuously adjusting the heat back through at least a gear mechanism.