JP2005048872A - Ball joint - Google Patents

Ball joint Download PDF

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Publication number
JP2005048872A
JP2005048872A JP2003281537A JP2003281537A JP2005048872A JP 2005048872 A JP2005048872 A JP 2005048872A JP 2003281537 A JP2003281537 A JP 2003281537A JP 2003281537 A JP2003281537 A JP 2003281537A JP 2005048872 A JP2005048872 A JP 2005048872A
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Japan
Prior art keywords
spherical body
spherical
ring
ball joint
rings
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JP2003281537A
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Japanese (ja)
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Tadashi Kamogawa
正 鴨川
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Priority to JP2003281537A priority Critical patent/JP2005048872A/en
Publication of JP2005048872A publication Critical patent/JP2005048872A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0666—Sealing means between the socket and the inner member shaft
    • F16C11/0676—Sealing means between the socket and the inner member shaft allowing operational relative movement of joint parts due to sliding between parts of the sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/26—Pivoted arms
    • F21V21/28—Pivoted arms adjustable in more than one plane
    • F21V21/29—Pivoted arms adjustable in more than one plane employing universal joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2362/00—Apparatus for lighting or heating

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproof ball joint having a sufficient performance with respect to ball joints freely rotatably holding with a spherical joint a hollow arm employed for piping for electric wire by passing through electric wire. <P>SOLUTION: A ball joint 10 contains a hollow arm 12. A spherical body 14 is mounted on one end of the hollow arm 12. The sphere 14 is rotatably held by the spherical holder 16 composed by screwing a male screw member 16a to a female screw member 16b. An O ring groove 20 is provided to the inside surface of the spherical holder 16. Two O rings 22, 24 are accommodated in the O ring groove 20. Two pieces of O rings push each other, whereby two O rings closely adhere onto the spherical body so as to obtain the ball joint having a high waterproofing effect. <P>COPYRIGHT: (C)2005,JPO&amp;NCIPI

Description

本発明はボールジョイントに関し、特に例えばその中に電線を通じて電線用配管に用いる中空アームを球形継手で自在に回動可能に保持した、ボールジョイントに関する。   The present invention relates to a ball joint, and more particularly to a ball joint in which, for example, a hollow arm used for wire piping through an electric wire is rotatably held by a spherical joint.

従来のこの種のボールジョイントの一例が、特許文献１に開示されている。特許文献１のボールジョイントは、電気スタンドなどに用いられ、電線が球状部の貫通孔及び中空腕と通って配線され、抱持部で球状部を抱持することによって、中空腕を回動させるもので、特に回動時は電線が過度に捻られることのないような回動規制を特徴とする。   An example of a conventional ball joint of this type is disclosed in Patent Document 1. The ball joint of Patent Document 1 is used in a desk lamp or the like, and an electric wire is wired through a through-hole and a hollow arm of a spherical portion, and the hollow arm is rotated by holding the spherical portion by the holding portion. In particular, it is characterized by a rotation restriction that prevents the wire from being twisted excessively during rotation.

このようなボールジョイントは電線を回動可能に配線できるので、様々な用途に利用できるが、特許文献１のボールジョイントは防水性については全く意図されていない。   Since such a ball joint can wire an electric wire so that rotation is possible, it can be utilized for various uses, but the ball joint of patent documents 1 is not intended at all about waterproofness.

他方、球形継手を用いた自在継手で止水性または防水性を考慮したものとして、特許文献２に開示されたものがある。特許文献２の球形継手は電線配線用のものではないが、内球の外側で外球との間に２本（複数）のパッキンを介在させて止水性を高めている。
特開２００２−１２２１２９号公報［Ｆ１６Ｃ １１／０８、Ｈ０２Ｇ １５／０８、／／Ｆ１６Ｌ ２７／０４］ 実用新案登録第３０２３０１７号公報［Ｆ１６Ｌ ２７／０４］ On the other hand, Patent Document 2 discloses a universal joint using a spherical joint that takes water-stopping or waterproofing into consideration. Although the spherical joint of Patent Document 2 is not intended for electric wire wiring, two (plural) packings are interposed between the outer sphere and the outside of the inner sphere to increase the water-stopping property.
JP 2002-122129 A [F16C 11/08, H02G 15/08, // F16L 27/04] Utility Model Registration No. 3023017 [F16L 27/04]

特許文献１のボールジョイントの球形継手に特許文献２のパッキンを適用して、防水型のボールジョイントを作製することが考えられるが、２つの従来技術を単純に寄せ集めただけでは防水型ボールジョイントとしての必要な性能は得られない。   It is conceivable to produce a waterproof ball joint by applying the packing of Patent Document 2 to the spherical joint of the ball joint of Patent Document 1, but the waterproof ball joint is simply a combination of the two conventional techniques. As a result, the required performance cannot be obtained.

それゆえに、この発明の主たる目的は十分な性能を有する、防水型ボールジョイントを提供することである。   Therefore, a main object of the present invention is to provide a waterproof ball joint having sufficient performance.

請求項１の発明は、中空アームに連結される球形体と、この球形体を回動自在に保持する球形体ホルダーとを有するボールジョイントにおいて、球形体ホルダー内面に１つのＯリング溝を形成し、１つのＯリング溝に２本のＯリングを収容し、各ＯリングのＯリング中心線が球形体の中心を通る球形体中心線を両側で挟みかつ２本のＯリングを球形体中心線上で接触させるようにしたことを特徴とする、ボールジョイントである。   The invention of claim 1 is a ball joint having a spherical body connected to a hollow arm and a spherical body holder for rotatably holding the spherical body, wherein one O-ring groove is formed on the inner surface of the spherical body holder. Two O-rings are accommodated in one O-ring groove, the O-ring center line of each O-ring sandwiches the sphere center line passing through the center of the sphere, and the two O-rings are on the sphere center line. It is a ball joint characterized by being made to contact with.

請求項１の発明では、１つのＯリング溝に２本のＯリングが収容されているので、中空アームの回動時には、一方のＯリングが他方のＯリングに押し付けられる。そのため、２本のＯリングは共に大きく変形し、Ｏリングが球形体外面に密着する。それと共に、各ＯリングのＯリング中心線が球形体中心線をわずかに外れてそれを挟むので、各Ｏリングが安定的に球形体外面に密着する。従って、高い防水性が得られる。   In the first aspect of the invention, since two O-rings are accommodated in one O-ring groove, one O-ring is pressed against the other O-ring when the hollow arm is rotated. Therefore, both of the two O-rings are greatly deformed, and the O-ring is in close contact with the outer surface of the spherical body. At the same time, the O-ring center line of each O-ring slightly deviates from and sandwiches the spherical body center line, so that each O-ring is stably in close contact with the outer surface of the spherical body. Therefore, high waterproofness is obtained.

この発明によれば、Ｏリングが安定的に球形体外面に密着するので、高い防水性が安定的に得られる。   According to the present invention, since the O-ring is stably adhered to the outer surface of the spherical body, high waterproofness can be stably obtained.

この発明の上述の目的、その他の目的、特徴及び利点は、図面を参照して行う以下の発明を実施するための最良の形態による詳細な説明から一層明かとなろう。   The above object, other objects, features, and advantages of the present invention will become more apparent from the following detailed description of the best mode for carrying out the invention with reference to the drawings.

図１に示す本発明の実施例のボールジョイント１０は、中空アーム１２を含み、中空アーム１２の一端側には球形体１４が取りつけられる。球形体１４は球形体ホルダー１６によって回動可能に抱持され、球形体１４と球形体ホルダー１６とが球体継手を構成しており、この球形継手が支持台１８に固定的に保持される。従って支持台１８をたとえば壁面（図示せず）に固着すれば、中空アーム１２が壁面上において回動可能に保持される。   A ball joint 10 according to the embodiment of the present invention shown in FIG. 1 includes a hollow arm 12, and a spherical body 14 is attached to one end side of the hollow arm 12. The spherical body 14 is rotatably held by a spherical body holder 16, and the spherical body 14 and the spherical body holder 16 constitute a spherical joint, and this spherical joint is fixedly held on the support base 18. Therefore, if the support base 18 is fixed to, for example, a wall surface (not shown), the hollow arm 12 is rotatably held on the wall surface.

詳しく説明すると、図２に示すように、円筒状の中空アーム１２の一端に、中空アーム１２の直径より大きな直径をもつ球形体１４が設けられる。中空アーム１２及び球形体１４は金属またはプラスチックなどの材料からなる。球形体１４は中空アーム１２と接続された側と反対側に円形断面を有し、截頭球体となっている。   More specifically, as shown in FIG. 2, a spherical body 14 having a diameter larger than the diameter of the hollow arm 12 is provided at one end of the cylindrical hollow arm 12. The hollow arm 12 and the spherical body 14 are made of a material such as metal or plastic. The spherical body 14 has a circular cross section on the side opposite to the side connected to the hollow arm 12 and is a truncated sphere.

球形体１４は雄ねじ部材１６ａと雌ねじ部材１６ｂとを螺合することによって形成した球形体ホルダー１６によって回動自在に保持される。すなわち、支持台１８のほぼ中央に一方方向側に突出して雄ねじ部材１６ａが形成され、この雄ねじ部材１６ａに袋ナットのような雌ねじ部材１６ｂが螺嵌されて、１つの球形体ホルダー１６を形成する。この球形体ホルダー１６には、その内面に球形体１４の外面に沿う球面が形成され、それによって球形体１４が球形体ホルダー１６に回動自在に保持される。この球形体ホルダー１６もまた金属やプラスチックで形成され得る。よって、支持台１８を壁等に固定したとき、中空アーム１２が回動可能となる。図２では雄ねじ部材１６ａが支持台１８に固着された例を示しているが、雌ねじ部材１６ｂが支持台１８に固着されても、何ら差し支えない。   The spherical body 14 is rotatably held by a spherical body holder 16 formed by screwing the male screw member 16a and the female screw member 16b. That is, a male screw member 16a is formed in the center of the support base 18 so as to protrude in one direction, and a female screw member 16b such as a cap nut is screwed into the male screw member 16a to form one spherical body holder 16. . The spherical body holder 16 is formed with a spherical surface along the outer surface of the spherical body 14 on the inner surface thereof, so that the spherical body 14 is rotatably held by the spherical body holder 16. The spherical body holder 16 can also be formed of metal or plastic. Therefore, when the support base 18 is fixed to a wall or the like, the hollow arm 12 can be rotated. FIG. 2 shows an example in which the male screw member 16 a is fixed to the support base 18, but there is no problem even if the female screw member 16 b is fixed to the support base 18.

雄ねじ部材１６ａと雌ねじ部材１６ｂの内側の球面上で、両者を螺合したとき互いに接する周縁に沿って、Ｏリング溝２０ａ及び２０ｂが形成されている。Ｏリング溝２０ａ及び２０ｂは雄ねじ部材１６ａと雌ねじ部材１６ｂを合体させたとき、１本のＯリング溝２０としての機能を果たすように構成されている。Ｏリング溝２０ａ及び２０ｂの内部に２本のＯリング２２及び２４が収容されている。図２に示す実施例において、Ｏリング２２及び２４は断面の半径が等しいものを用いる。   On the inner spherical surfaces of the male screw member 16a and the female screw member 16b, O-ring grooves 20a and 20b are formed along the peripheral edges that come into contact with each other when they are screwed together. The O-ring grooves 20a and 20b are configured to function as one O-ring groove 20 when the male screw member 16a and the female screw member 16b are combined. Two O-rings 22 and 24 are accommodated in the O-ring grooves 20a and 20b. In the embodiment shown in FIG. 2, O-rings 22 and 24 having the same cross-sectional radius are used.

図３に示すように、球形体の中心２６を通る直線を球形体中心線２８とする。またＯリング溝２０に収容されたＯリング２２及び２４について、それぞれのＯリングについて、任意の２点におけるＯリング断面円形の中心どうしを結んだ直線をＯリング中心線とし、Ｏリング２２及び２４についてそれぞれＯリング中心線３０及び３２とする。   As shown in FIG. 3, a straight line passing through the center 26 of the sphere is a sphere center line 28. Further, regarding the O-rings 22 and 24 accommodated in the O-ring groove 20, for each O-ring, a straight line connecting the centers of the O-ring cross-sectional circles at two arbitrary points is defined as an O-ring center line, and the O-rings 22 and 24. Are O-ring centerlines 30 and 32, respectively.

図３からよく分かるように、２つのＯリング２２及び２４のＯリング中心線３０及び３２は球形体１４の中心線２８からわずかにずらされ、その中心線２８を両側で挟むように、かつ２つのＯリング２２及び２４が球形体中心線２８上で密着するように、Ｏリング溝２０に収容される。   As can be seen from FIG. 3, the O-ring centerlines 30 and 32 of the two O-rings 22 and 24 are slightly offset from the centerline 28 of the sphere 14 so that the centerline 28 is sandwiched on both sides and 2 The two O-rings 22 and 24 are accommodated in the O-ring groove 20 so as to be in close contact with each other on the spherical body center line 28.

なお、このようなボールジョイント１０は、次のようにして組み立てられる。雄ねじ部材１６ａが支持台１８に固定され、雄ねじ部材１６ａの内側球面上に設けられたＯリング溝２０ａにＯリング２４が設けられる。中空アーム１２が取りつけられた球形体１２を、Ｏリング２４の設けられた雄ねじ部材１６ａに、球形体１４の外面と雄ねじ部材１６ａの内面が沿うように設けられる。その後中空アーム１２の側からＯリング２２を、Ｏリング２４と接触するように設け、同じ側から雌ねじ部材１６ｂを、雌ねじ部材１６ｂに形成されたＯリング溝２０ｂにＯリング２２を収容する。そして、雄ねじ部材１６ａと雌ねじ部材１６ｂを螺合することで１つの球形体ホルダー１６を形成し、球形体１４を抱持する。よって、支持台１８を壁等に固定したとき、中空アーム１２が回動可能となる。   Such a ball joint 10 is assembled as follows. The male screw member 16a is fixed to the support base 18, and an O-ring 24 is provided in an O-ring groove 20a provided on the inner spherical surface of the male screw member 16a. The spherical body 12 to which the hollow arm 12 is attached is provided so that the outer surface of the spherical body 14 and the inner surface of the male screw member 16a are along the male screw member 16a provided with the O-ring 24. Thereafter, an O-ring 22 is provided from the side of the hollow arm 12 so as to be in contact with the O-ring 24, and the female screw member 16 b is accommodated in the O-ring groove 20 b formed in the female screw member 16 b from the same side. Then, one spherical body holder 16 is formed by screwing the male screw member 16a and the female screw member 16b, and the spherical body 14 is held. Therefore, when the support base 18 is fixed to a wall or the like, the hollow arm 12 can be rotated.

中空アーム１２を回動させると、Ｏリング２２及び２４のうち、一方のＯリングが他方のＯリングに押し付けられる。Ｏリング２２及び２４は材質も大きさも同じものを用いるため、２本のＯリング２２及び２４は共に等しい力を受け大きく変形し、Ｏリングが球形体１４の外面に密着する。変形したＯリング２２、２４は、Ｏリング中心線３０、３２が球形体中心線２８をわずかに外れてそれを挟むように設けられる。このときＯリング中心線３０、３２と球形体中心線２８は平行で、等間隔に設けられることとなる。従って、Ｏリング２２及び２４が安定的に球形体外面に密着し、高い防水効果が得られる。   When the hollow arm 12 is rotated, one of the O-rings 22 and 24 is pressed against the other O-ring. Since the same materials and sizes are used for the O-rings 22 and 24, the two O-rings 22 and 24 are both greatly deformed under the same force, and the O-rings are in close contact with the outer surface of the spherical body 14. The deformed O-rings 22 and 24 are provided such that the O-ring center lines 30 and 32 slightly deviate from the spherical body center line 28 and sandwich it. At this time, the O-ring center lines 30 and 32 and the spherical body center line 28 are parallel and provided at equal intervals. Accordingly, the O-rings 22 and 24 stably adhere to the outer surface of the spherical body, and a high waterproof effect is obtained.

上述のように、この実施例によれば、比較的断面径の小さい２本のＯリング２２及び２４を用いて防水効果を高めることができる。特許文献２に開示されている自在継手では、防水性を高めるために２本のパッキンを設けているが、これでは中空アームの回動時に２本のパッキンが互いに押し合うようなことはなく、十分な止水性が得られない。さらに断面径の比較的大きい１本だけのシールリングを用いる場合には、これを圧縮するために大きな力が必要となり、球形体ホルダーのサイズが大きくなり、中空アームの回動範囲も狭くなってしまう。   As described above, according to this embodiment, the waterproof effect can be enhanced by using the two O-rings 22 and 24 having a relatively small cross-sectional diameter. In the universal joint disclosed in Patent Document 2, two packings are provided in order to enhance waterproofness. However, in this case, the two packings are not pressed against each other when the hollow arm is rotated. Sufficient water stop cannot be obtained. Further, when only one seal ring having a relatively large cross-sectional diameter is used, a large force is required to compress the seal ring, the size of the spherical holder is increased, and the rotation range of the hollow arm is also reduced. End up.

この発明の実施例を示す斜視図であり、（Ａ）は上方から見た図で、（Ｂ）は下方から見た図である。It is the perspective view which shows the Example of this invention, (A) is the figure seen from upper direction, (B) is the figure seen from the downward direction. この実施例を示す断面図である。It is sectional drawing which shows this Example. 図２断面図のＯリングと球形体との接触部分のを示す拡大図である。FIG. 3 is an enlarged view showing a contact portion between an O-ring and a spherical body in the cross-sectional view of FIG. 2.

符号の説明Explanation of symbols

１０ …ボールジョイント
１２ …中空アーム
１４ …球形体
１６ …球形体ホルダー
１６ａ …雄ねじ部材
１６ｂ …雌ねじ部材
１８ …支持台
２０，２０ａ，２０ｂ …Ｏリング溝
２２，２４ …Ｏリング
２６ …球形体の中心
２８ …球形体中心線
３０，３２ …Ｏリング中心線 DESCRIPTION OF SYMBOLS 10 ... Ball joint 12 ... Hollow arm 14 ... Spherical body 16 ... Spherical body holder 16a ... Male screw member 16b ... Female screw member 18 ... Support stand 20, 20a, 20b ... O-ring groove 22, 24 ... O-ring 26 ... Center of spherical body 28 ... Spherical body center line 30, 32 ... O-ring center line

Claims (1)

中空アームに連結される球形体と、この球形体を回動自在に保持する球形体ホルダーとを有するボールジョイントにおいて、
前記球形体ホルダー内面に１つのＯリング溝を形成し、前記１つのＯリング溝２本のＯリングを収容し、各ＯリングＯリング中心線が前記球形体の中心を通る球形体中心線を両側で挟みかつ２本のＯリングを前記球形体中心線上で接触させるようにしたことを特徴とする、ボールジョイント。 In a ball joint having a spherical body connected to a hollow arm and a spherical body holder that rotatably holds the spherical body,
One O-ring groove is formed on the inner surface of the spherical body holder, and the two O-rings of the one O-ring groove are accommodated, and the center line of each O-ring O-ring passes through the center of the spherical body. A ball joint characterized in that it is sandwiched between both sides and two O-rings are brought into contact with each other on the spherical body center line.
JP2003281537A 2003-07-29 2003-07-29 Ball joint Pending JP2005048872A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007177562A (en) * 2005-12-28 2007-07-12 Device:Kk Horizontal overhanging structure from wall surface by tabular member
CN102401354A (en) * 2010-09-13 2012-04-04 上海康耐司信号设备有限公司 Bracket with adjustable rotating angle
KR101167992B1 (en) * 2010-12-27 2012-07-23 조인트유창써멀시스템 주식회사 Packing cylinder and ball joint using the Same
EP2700873A1 (en) * 2012-08-22 2014-02-26 Crystal Eyes Enterprise Co., Ltd. Articulated lamp
WO2017149700A1 (en) * 2016-03-02 2017-09-08 金子産業株式会社 Solenoid device and electromagnetic valve
KR20190073179A (en) * 2017-12-18 2019-06-26 주식회사 성우하이텍 Ball joint unit

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007177562A (en) * 2005-12-28 2007-07-12 Device:Kk Horizontal overhanging structure from wall surface by tabular member
JP4502951B2 (en) * 2005-12-28 2010-07-14 株式会社デバイス Horizontal projecting structure from wall surface by plate-like member
CN102401354A (en) * 2010-09-13 2012-04-04 上海康耐司信号设备有限公司 Bracket with adjustable rotating angle
CN102401354B (en) * 2010-09-13 2013-01-09 上海康耐司信号设备有限公司 Bracket with adjustable rotating angle
KR101167992B1 (en) * 2010-12-27 2012-07-23 조인트유창써멀시스템 주식회사 Packing cylinder and ball joint using the Same
EP2700873A1 (en) * 2012-08-22 2014-02-26 Crystal Eyes Enterprise Co., Ltd. Articulated lamp
WO2017149700A1 (en) * 2016-03-02 2017-09-08 金子産業株式会社 Solenoid device and electromagnetic valve
JPWO2017149700A1 (en) * 2016-03-02 2018-10-18 金子産業株式会社 Solenoid device and solenoid valve
CN108700218A (en) * 2016-03-02 2018-10-23 金子产业株式会社 Spiral piping arrangement and solenoid valve
KR20190073179A (en) * 2017-12-18 2019-06-26 주식회사 성우하이텍 Ball joint unit
KR102430215B1 (en) 2017-12-18 2022-08-08 주식회사 성우하이텍 Ball joint unit

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