JP6807143B2

JP6807143B2 - Rotary damper

Info

Publication number: JP6807143B2
Application number: JP2016154353A
Authority: JP
Inventors: 山田　大輔; 大輔山田
Original assignee: Somic Ishikawa KK
Current assignee: Somic Ishikawa KK
Priority date: 2016-08-05
Filing date: 2016-08-05
Publication date: 2021-01-06
Anticipated expiration: 2036-08-05
Also published as: JP2018021633A

Description

本発明は、ロータリーダンパに関する。 The present invention relates to a rotary damper.

従来、隔壁で仕切られ、オイルが充填される２つの油室、及び各油室に配置されるベーンを備えるロータリーダンパが知られている（例えば、特開２００２−０８１４８２号公報参照）。この種のロータリーダンパは、油室の容積を大きくすることによって、発生トルクを大きくすることができる。 Conventionally, there are known rotary dampers having two oil chambers separated by a partition wall and filled with oil, and vanes arranged in each oil chamber (see, for example, JP-A-2002-081482). In this type of rotary damper, the generated torque can be increased by increasing the volume of the oil chamber.

しかしながら、従来のロータリーダンパは、油室の一方の容積と油室の他方の容積が同一であるため、高トルクを得るために油室の容積を大きくすることによって、ロータリーダンパの外径が大きくなり又は高さが高くなり過ぎて、設置する空間に適合しない事態が発生していた。 However, in the conventional rotary damper, since the volume of one oil chamber and the volume of the other oil chamber are the same, the outer diameter of the rotary damper is increased by increasing the volume of the oil chamber in order to obtain high torque. There was a situation where the height was too high or too high to fit the installation space.

特開２００２−０８１４８２号公報JP-A-2002-081482

本発明が解決しようとする課題は、設置空間に存在する障害物を回避しながら、高トルクを発生することが可能なロータリーダンパを提供することである。 An object to be solved by the present invention is to provide a rotary damper capable of generating high torque while avoiding obstacles existing in the installation space.

上記課題を解決するため、本発明は、隔壁で仕切られ、オイルが充填される２つの油室、及びシャフトと一体に成形され、各油室に配置されるベーンを備え、前記油室の一方の容積と前記油室の他方の容積が異なること、並びに前記油室のうち、容積が小さい方の周壁の外周面から前記シャフトの中心までの径が前記油室のうち、容積が大きい方の周壁の外周面から前記シャフトの中心までの径より小さい及び／又は前記油室のうち、容積が小さい方の一方の端壁の外面から他方の端壁の外面までの高さが前記油室のうち、容積が大きい方の一方の端壁の外面から他方の端壁の外面までの高さより低いことを特徴とするロータリーダンパを提供する。 In order to solve the above problems, the present invention includes two oil chambers separated by a partition and filled with oil, and a vane integrally molded with the shaft and arranged in each oil chamber, and one of the oil chambers. The volume of the oil chamber and the volume of the other oil chamber are different , and the diameter from the outer peripheral surface of the peripheral wall of the oil chamber having the smaller volume to the center of the shaft is the larger volume of the oil chamber. The height from the outer surface of one end wall of the oil chamber smaller than the diameter from the outer peripheral surface of the peripheral wall to the center of the shaft and / or the smaller volume of the oil chamber to the outer surface of the other end wall is the height of the oil chamber. Provided is a rotary damper characterized in that the height is lower than the height from the outer surface of one end wall having a larger volume to the outer surface of the other end wall .

本発明では、油室の一方の容積と油室の他方の容積が異なり、油室のうち、容積が小さい方の周壁の外周面からシャフトの中心までの径が油室のうち、容積が大きい方の周壁の外周面からシャフトの中心までの径より小さい及び／又は油室のうち、容積が小さい方の一方の端壁の外面から他方の端壁の外面までの高さが油室のうち、容積が大きい方の一方の端壁の外面から他方の端壁の外面までの高さより低い。したがって、油室の容積を大きくするために、例えば、油室の一方の容積を油室の他方の容積よりも大きくすることが可能である。この場合、油室の他方側は、油室の一方側と比べて、周壁の外周面からシャフトの中心までの径が小さいため、及び／又は一方の端壁の外面から他方の端壁の外面までの高さが低いため、ハウジングの外径を小さくしたり、高さを低くすることが可能であり、その結果、設置空間に存在する障害物を回避し得る。 In the present invention, the other volume of one volume of the oil chamber and the oil chamber Ri Do different, of the oil chamber, among the diameter of the outer peripheral surface of the peripheral wall towards small volume to the center of the shaft of the oil chamber, volume The height from the outer surface of one end wall of the oil chamber smaller than the diameter from the outer peripheral surface of the larger peripheral wall to the center of the shaft and / or the smaller volume of the oil chamber is the outer surface of the other end wall. Of these, the height is lower than the height from the outer surface of one end wall having a larger volume to the outer surface of the other end wall . Therefore, in order to increase the volume of the oil chamber, for example, it is possible to make one volume of the oil chamber larger than the volume of the other oil chamber. In this case, the other side of the oil chamber has a smaller diameter from the outer peripheral surface of the peripheral wall to the center of the shaft than one side of the oil chamber, and / or from the outer surface of one end wall to the outer surface of the other end wall. Since the height is low , it is possible to reduce the outer diameter of the housing and the height, and as a result, obstacles existing in the installation space can be avoided.

本発明に係るロータリーダンパの平面図である。It is a top view of the rotary damper which concerns on this invention. 本発明に係るロータリーダンパの正面図である。It is a front view of the rotary damper which concerns on this invention. 本発明に係るロータリーダンパの底面図である。It is a bottom view of the rotary damper which concerns on this invention. 図１のＡ−Ａ部断面図である。It is sectional drawing of AA part of FIG. 図２のＢ−Ｂ部断面図である。It is sectional drawing of BB part of FIG. 本発明に係るロータリーダンパの設置状態を示す模式図である。It is a schematic diagram which shows the installation state of the rotary damper which concerns on this invention.

以下、本発明の実施例に基づいて本発明の実施形態をさらに詳しく説明するが、本発明の技術的範囲は以下の説明の内容に限定されるものではない。 Hereinafter, embodiments of the present invention will be described in more detail based on examples of the present invention, but the technical scope of the present invention is not limited to the contents of the following description.

実施例１は、本発明の一実施形態である。図４及び図５に示したように、実施例１に係るロータリーダンパは、２つの油室１０，２０を有して構成されている。 Example 1 is an embodiment of the present invention. As shown in FIGS. 4 and 5, the rotary damper according to the first embodiment is configured to have two oil chambers 10 and 20.

図５に示したように、２つの油室１０，２０は、隔壁３０で仕切られている。隔壁３０は、ハウジング４０と一体に成形されている。２つの油室１０，２０には、オイルが充填されている。 As shown in FIG. 5, the two oil chambers 10 and 20 are separated by a partition wall 30. The partition wall 30 is integrally molded with the housing 40. The two oil chambers 10 and 20 are filled with oil.

図５に示したように、２つの油室１０，２０には、ベーン５０が配置されている。ベーン５０は、シャフト６０と一体に成形されている。 As shown in FIG. 5, vanes 50 are arranged in the two oil chambers 10 and 20. The vane 50 is integrally molded with the shaft 60.

実施例１に係るロータリーダンパは、ベーン５０がオイルの抵抗を受けながらシャフト６０と一緒に回転することによりトルクを発生するものである。シャフト６０の回転方向によってトルクの大きさを変化させるために、ベーン５０及び／又は隔壁３０にバルブを設けてもよい。 The rotary damper according to the first embodiment generates torque when the vane 50 rotates together with the shaft 60 while receiving the resistance of oil. A valve may be provided on the vane 50 and / or the partition wall 30 in order to change the magnitude of the torque depending on the rotation direction of the shaft 60.

図５に示したように、実施例１に係るロータリーダンパは、油室の一方（以下、第１の油室という）１０の半径と油室の他方（以下、第２の油室という）２０の半径が異なる。したがって、第１の油室１０の高さと第２の油室２０の高さが同一の場合であっても、第１の油室１０の容積と第２の油室２０の容積が異なる。 As shown in FIG. 5, the rotary damper according to the first embodiment has a radius of 10 on one side of the oil chamber (hereinafter referred to as the first oil chamber) and 20 on the other side of the oil chamber (hereinafter referred to as the second oil chamber) 20. Radius is different. Therefore, even when the height of the first oil chamber 10 and the height of the second oil chamber 20 are the same, the volume of the first oil chamber 10 and the volume of the second oil chamber 20 are different.

図４に示したように、実施例１に係るロータリーダンパは、第１の油室１０の高さと第２の油室２０の高さが異なる。したがって、第１の油室１０の半径と第２の油室２０の半径が同一の場合であっても、第１の油室１０の容積と第２の油室２０の容積が異なる。 As shown in FIG. 4, in the rotary damper according to the first embodiment, the height of the first oil chamber 10 and the height of the second oil chamber 20 are different. Therefore, even when the radius of the first oil chamber 10 and the radius of the second oil chamber 20 are the same, the volume of the first oil chamber 10 and the volume of the second oil chamber 20 are different.

実施例１に係るロータリーダンパは、第１の油室１０の半径及び高さと第２の油室２０の半径及び高さがそれぞれ異なるため、第１の油室１０の容積と第２の油室２０の容積が異なる。したがって、油室の容積を大きくするために、換言すると、オイルの量を増加させるために、本実施例のように、第１の油室１０の容積を第２の油室２０の容積よりも大きくすることが可能である。この場合、第２の油室２０の容積が小さいため、第２の油室２０側では、ハウジング４０の外径を小さくしたり、高さを低くすることが可能である。その結果、図６に示したように、本実施例によれば、設置空間Ｓに存在する障害物７０とハウジング４０との接触を回避し得る。 Since the radius and height of the first oil chamber 10 and the radius and height of the second oil chamber 20 are different from each other in the rotary damper according to the first embodiment, the volume of the first oil chamber 10 and the volume of the second oil chamber 10 are different from each other. The volumes of 20 are different. Therefore, in order to increase the volume of the oil chamber, in other words, in order to increase the amount of oil, the volume of the first oil chamber 10 is larger than the volume of the second oil chamber 20 as in this embodiment. It can be made larger. In this case, since the volume of the second oil chamber 20 is small, it is possible to reduce the outer diameter or the height of the housing 40 on the second oil chamber 20 side. As a result, as shown in FIG. 6, according to the present embodiment, it is possible to avoid contact between the obstacle 70 existing in the installation space S and the housing 40.

１０第１の油室
２０第２の油室
３０隔壁
４０ハウジング
５０ベーン
６０シャフト
７０障害物
Ｓ設置空間 10 1st oil chamber 20 2nd oil chamber 30 Partition wall 40 Housing 50 Vane 60 Shaft 70 Obstacle S Installation space

Claims

It has two oil chambers separated by a partition and filled with oil, and a vane integrally molded with the shaft and placed in each oil chamber, with one volume of the oil chamber and the other volume of the oil chamber. Different , and the diameter from the outer peripheral surface of the peripheral wall having the smaller volume to the center of the shaft in the oil chamber is from the outer peripheral surface of the peripheral wall having the larger volume to the center of the shaft in the oil chamber. The height from the outer surface of one end wall of the oil chamber having a smaller diameter and / or the smaller volume to the outer surface of the other end wall is one end wall of the oil chamber having a larger volume. A rotary damper characterized in that it is lower than the height from the outer surface of the oil to the outer surface of the other end wall .

The rotary damper according to claim 1, wherein the radius of one of the oil chambers and the radius of the other of the oil chambers are different.

The rotary damper according to claim 1, wherein the height of one of the oil chambers and the height of the other of the oil chambers are different.

The rotary damper according to claim 1, wherein the radius and height of one of the oil chambers and the radius and height of the other of the oil chambers are different from each other.