JP7442620B2 - Transport protection plug - Google Patents

Transport protection plug Download PDF

Info

Publication number
JP7442620B2
JP7442620B2 JP2022508060A JP2022508060A JP7442620B2 JP 7442620 B2 JP7442620 B2 JP 7442620B2 JP 2022508060 A JP2022508060 A JP 2022508060A JP 2022508060 A JP2022508060 A JP 2022508060A JP 7442620 B2 JP7442620 B2 JP 7442620B2
Authority
JP
Japan
Prior art keywords
hole
cylinder
transportation
groove
cylindrical portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2022508060A
Other languages
Japanese (ja)
Other versions
JPWO2021186815A1 (en
Inventor
竹徳 土屋
公志 前山
正一 近藤
英和 市川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Astemo Ltd
Original Assignee
Hitachi Astemo Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Astemo Ltd filed Critical Hitachi Astemo Ltd
Publication of JPWO2021186815A1 publication Critical patent/JPWO2021186815A1/ja
Application granted granted Critical
Publication of JP7442620B2 publication Critical patent/JP7442620B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J13/00—Covers or similar closure members for pressure vessels in general
    • F16J13/02—Detachable closure members; Means for tightening closures
    • F16J13/10—Detachable closure members; Means for tightening closures attached by means of a divided ring
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)
  • Handcart (AREA)

Description

本発明は、輸送用保護プラグに関し、詳しくは、内圧が発生する空間部を内部に備えた筐体の開口部に用いられる輸送用保護プラグに関する。 The present invention relates to a protective plug for transportation, and more particularly to a protective plug for transportation used in an opening of a casing that has a space inside where internal pressure is generated.

従来、輸送用保護プラグとして、例えば、管継手（筐体）に用いられるものでは、管継手の開口部に挿入される筒部と、筒部の一端に設けられ、管継手の開口部端面よりも外方に突出する指掛け部とを備えたものがあり、管継手の輸送時や保管時には、筒部を管継手の開口部に挿入して、管継手の内部に異物が侵入することを防止し、管継手を施工する際には、指掛け部を利用して、輸送用保護プラグを管継手から容易に取り外せるようにしたものがあった（例えば、特許文献１参照。）。 Conventionally, protection plugs used for transportation, for example, those used in pipe fittings (casings) have a cylindrical part that is inserted into the opening of the pipe fitting, and a cylindrical part that is provided at one end of the cylindrical part and is inserted from the end surface of the opening of the pipe fitting. Some have a finger hook that protrudes outward, and when the pipe fitting is being transported or stored, the cylindrical part is inserted into the opening of the pipe fitting to prevent foreign matter from entering the inside of the pipe fitting. However, when constructing a pipe joint, there has been one in which a finger hook part is used to easily remove a transport protection plug from the pipe joint (see, for example, Patent Document 1).

実開平５－８９２６３号公報Utility Model Publication No. 5-89263

しかし、内部の空間部に内圧が発生する筐体の通孔に、上述の特許文献１のような輸送用保護プラグを用いると、内圧発生時に輸送用保護プラグが筐体から抜ける虞があった。 However, if a transportation protection plug such as that disclosed in Patent Document 1 is used in a hole in a housing where internal pressure is generated in the internal space, there is a risk that the transportation protection plug may come off from the housing when internal pressure is generated. .

そこで本発明は、筐体に設けた通孔に着脱可能に設けられ、筐体内部の空間部に内圧が発生しても抜ける虞のない輸送用保護プラグを提供することを目的としている。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a protective plug for transportation that is detachably installed in a through hole provided in a housing and that does not have the risk of coming off even if internal pressure is generated in the space inside the housing.

上記目的を達成するため、本発明の輸送用保護プラグは、内圧が発生する空間部を内部に備えた筐体に、前記空間部の内外を連通させる通孔を形成した製品に用いられ、前記通孔に着脱可能に装着され、前記空間部を封止する輸送用保護プラグにおいて、前記通孔に挿入される筒部と、該筒部の一端部に設けられ、前記通孔の内径よりも大径に形成されるフランジ部とを一体に備えるとともに、前記空間部の内外を連通させる連通溝を形成し、前記連通溝は、前記筒部の外周面に設けられ、該筒部の軸線方向に延出する第１溝部と、該第１溝部に連続して前記フランジ部の筒部側面に設けられ、該第１溝部に対して直交方向に延出する第２溝部とを備えていることを特徴としている。 In order to achieve the above object, the protective plug for transportation of the present invention is used for a product in which a housing is provided with a space inside where internal pressure is generated, and a through hole is formed to communicate the inside and outside of the space. A protection plug for transportation that is removably attached to a through hole and seals the space includes a cylindrical portion inserted into the through hole, and a diameter larger than the inner diameter of the through hole. A flange portion formed to have a large diameter is integrally provided, and a communication groove is formed for communicating the inside and outside of the space portion , and the communication groove is provided on the outer peripheral surface of the cylindrical portion, and the communication groove is provided in the axial direction of the cylindrical portion. and a second groove provided on the side surface of the cylindrical portion of the flange portion continuously from the first groove and extending in a direction perpendicular to the first groove. It is characterized by

さらに、前記フランジ部の上部に連続して、該フランジ部よりも大径に形成される大径フランジ部を設けると好適である。 Furthermore, it is preferable to provide a large-diameter flange portion having a diameter larger than that of the flange portion, continuous to the upper portion of the flange portion.

また、輸送用保護プラグを樹脂で形成すると好ましい。 Moreover, it is preferable that the protective plug for transportation is made of resin.

さらに前記筐体は、車両用ブレーキ装置のシリンダ部であり、前記通孔は、前記シリンダ部に形成されるユニオン孔であってもよい。 Further, the housing may be a cylinder portion of a vehicle brake device, and the through hole may be a union hole formed in the cylinder portion.

本発明の輸送用保護プラグによれば、筐体の内部の空間部に内圧が発生しても、連通溝により内圧を外部に逃がすことができることから、輸送用保護プラグが通孔から抜ける虞がなく、空間部に異物が侵入することを確実に防止することができる。 According to the transportation protection plug of the present invention, even if internal pressure is generated in the space inside the casing, the communication groove allows the internal pressure to escape to the outside, so there is no possibility that the transportation protection plug will come off from the through hole. Therefore, it is possible to reliably prevent foreign matter from entering the space.

また、連通溝は、筒部の外周面に設けられ、該筒部の軸線方向に延出する第１溝部と、第１溝部に連続してフランジ部の筒部側面に設けられ、第１溝部に対して直交方向に延出する第２溝部とで形成したことにより、連通溝の長さを短くすることができる。 The communication groove is provided on the outer peripheral surface of the cylindrical portion and extends in the axial direction of the cylindrical portion, and the communication groove is provided on the side surface of the cylindrical portion of the flange portion continuously from the first groove portion, and the first groove portion is provided on the side surface of the cylindrical portion of the flange portion. By forming the second groove extending in a direction perpendicular to the first groove, the length of the communication groove can be shortened.

さらに、フランジ部の上部に連続して、該フランジ部よりも大径に形成される大径フランジ部を設けたことにより、フランジ部と大径フランジ部との間に指を掛けることができ、輸送用保護プラグの着脱を容易に行うことができる。 Furthermore, by providing a large-diameter flange portion that is formed to have a larger diameter than the flange portion and continuous to the upper portion of the flange portion, it is possible to hang a finger between the flange portions and the large-diameter flange portion. The protective plug for transportation can be easily attached and detached.

また、輸送用保護プラグを樹脂で形成することにより、輸送用保護プラグを安価に形成することができ、より好ましくは弾性を有する樹脂で形成することにより、輸送用保護プラグに適度な弾性を持たせることができ、作業性が向上する。 In addition, by forming the transport protection plug with resin, the transport protection plug can be formed at low cost, and more preferably, by forming it with elastic resin, the transport protection plug has appropriate elasticity. This improves work efficiency.

さらに、筐体は、車両用ブレーキ装置のシリンダ部であり、通孔は、シリンダ部に形成されるユニオン孔であることにより、ブレーキ装置の輸送工程や組み付け工程でシリンダ部内に内圧が発生しても輸送用保護プラグが抜ける虞がなく、シリンダ部内に異物が侵入することを確実に防止することができる。 Furthermore, the housing is the cylinder part of the vehicle brake system, and the through hole is a union hole formed in the cylinder part, so that internal pressure is generated in the cylinder part during the transportation and assembly process of the brake system. There is no risk that the transport protection plug will come off, and foreign matter can be reliably prevented from entering the cylinder.

本発明の一形態例を示す輸送用保護プラグを用いて、車両用ドラムブレーキのホイルシリンダを輸送する際の説明図である。It is an explanatory view at the time of transporting the foil cylinder of the drum brake for vehicles using the protection plug for transport showing one example of the present invention. 本発明の一形態例を示す輸送用保護プラグの正面図である。FIG. 2 is a front view of a protective plug for transportation showing one embodiment of the present invention. 図２のＩＩＩ－ＩＩＩ断面図である。3 is a sectional view taken along line III-III in FIG. 2. FIG. 本発明の一形態例を示す輸送用保護プラグの斜視図である。FIG. 1 is a perspective view of a protective plug for transportation showing one embodiment of the present invention. 図６のＶ－Ｖ断面図である。7 is a sectional view taken along line VV in FIG. 6. FIG. 本発明の一形態例を示す輸送用保護プラグを用いて、ホイルシリンダを組み付けた車両用ドラムブレーキの正面図である。1 is a front view of a vehicular drum brake in which a foil cylinder is assembled using a transport protection plug showing one embodiment of the present invention.

図１乃至図６は、本発明の輸送用保護プラグを車両用ドラムブレーキ（車両用ブレーキ装置）のホイルシリンダ（シリンダ部）に適用した一形態例を示す図である。 1 to 6 are diagrams showing an example of a form in which the transportation protection plug of the present invention is applied to a foil cylinder (cylinder portion) of a vehicle drum brake (vehicle brake device).

車両用ドラムブレーキ１は、車体に固設されるバックプレート２の内部に配設される一対のブレーキシュー３，３を、ホイルシリンダ４の液圧操作によってアンカー５を支点に拡開するようにしている。ブレーキシュー３，３は、バックプレート２と平行に配設される弓型のウェブ３ａ，３ａと、該ウェブ３ａ，３ａの外周面に固設され、ウェブ３ａ，３ａに直交するリム３ｂ，３ｂと、該リム３ｂ，３ｂの外周面に貼着されるライニング３ｃ，３ｃとからなり、ウェブ３ａ，３ａの一端部がホイルシリンダ４のピストン６，６に支持され、他端部がアンカー５に支持されている。ブレーキシュー３は、ウェブ３ａ，３ａ間に張設されるリターンスプリング７ａ，７ｂによって、縮径方向に付勢されており、制動時には、ホイルシリンダ４のピストン６，６の押動によって、アンカー５を支点に外側へ拡開し、外面のライニング３ｃ，３ｃをブレーキドラムの内周面に摺接させる。 A drum brake 1 for a vehicle is configured such that a pair of brake shoes 3, 3 disposed inside a back plate 2 fixed to a vehicle body are expanded around an anchor 5 by hydraulic operation of a foil cylinder 4. ing. The brake shoes 3, 3 include arch-shaped webs 3a, 3a disposed parallel to the back plate 2, and rims 3b, 3b fixed to the outer peripheral surfaces of the webs 3a, 3a, perpendicular to the webs 3a, 3a. and linings 3c, 3c stuck to the outer peripheral surfaces of the rims 3b, 3b, one end of the webs 3a, 3a is supported by the pistons 6, 6 of the foil cylinder 4, and the other end is supported by the anchor 5. Supported. The brake shoe 3 is biased in the diametrical direction by return springs 7a, 7b stretched between the webs 3a, 3a, and during braking, the anchor 5 is pushed by the pistons 6, 6 of the foil cylinder 4. The outer linings 3c, 3c are brought into sliding contact with the inner circumferential surface of the brake drum.

ホイルシリンダ４側に配置されるリターンスプリング７ａの内側近傍には、制動間隙自動調整装置８が配設されていて、ブレーキシュー３，３のライニング３ｃ，３ｃが摩耗して、ブレーキドラムの内周面との間に制動間隙が設定以上に広がった場合に、この制動間隙自動調整装置８によって、拡開したブレーキシュー３，３の後退位置をバックプレート外周側に規制することにより、所定の制動間隙が補償されるようになっている。また、一方のブレーキシュー３には、両ブレーキシュー３，３を拡開操作するパーキングブレーキ用のパーキングレバー９ａが支軸９ｂによって枢支されており、パーキングブレーキ操作によっても、制動作用が行えるようになっている。 An automatic braking gap adjustment device 8 is disposed near the inner side of the return spring 7a disposed on the wheel cylinder 4 side. When the braking gap widens beyond the setting, the braking gap automatic adjustment device 8 regulates the retracted position of the widened brake shoes 3 to the outer circumference of the back plate, thereby achieving a predetermined braking effect. The gap is now compensated. Further, on one brake shoe 3, a parking lever 9a for a parking brake that operates both brake shoes 3, 3 to expand is pivotally supported by a support shaft 9b, so that a braking action can also be performed by operating the parking brake. It has become.

ホイルシリンダ４は、バックプレート２にボルト止めされるシリンダボディ４ａ（筐体）に、シリンダ孔４ｂ（空間部）を貫通形成し、該シリンダ孔４ｂに前記ピストン６，６を収容した両口シリンダで、前記ピストン６，６は、中間部の液圧室１０に縮設されたピストンスプリング１１の弾発力によって、互いに離反する方向へ付勢されている。 The foil cylinder 4 is a double-ended cylinder in which a cylinder hole 4b (space) is formed through a cylinder body 4a (housing) bolted to a back plate 2, and the pistons 6, 6 are accommodated in the cylinder hole 4b. The pistons 6, 6 are urged away from each other by the elastic force of a piston spring 11 contracted in a hydraulic pressure chamber 10 in the intermediate portion.

各ピストン６は、シリンダ孔４ｂ内に摺動可能に内挿される本体部６ａと、該本体部６ａの外端面に連続して、シリンダボディ４ａの端面から突出する小径軸部６ｂとを備えている。各ピストン６の本体部６ａのシリンダ孔内部側の外周面には、ピストンシール溝６ｃが周設され、該ピストンシール溝６ｃにピストンシール１２が嵌着され、双方のピストンシール１２の間に前記液圧室１０が形成される。液圧室１０には、作動液を導入するユニオン孔１３が開口するとともに、前記ピストンスプリング１１が配置されている。 Each piston 6 includes a main body portion 6a that is slidably inserted into the cylinder hole 4b, and a small diameter shaft portion 6b that is continuous with the outer end surface of the main body portion 6a and protrudes from the end surface of the cylinder body 4a. There is. A piston seal groove 6c is provided on the outer circumferential surface of the main body 6a of each piston 6 on the inside side of the cylinder hole, and a piston seal 12 is fitted into the piston seal groove 6c. A hydraulic chamber 10 is formed. A union hole 13 for introducing hydraulic fluid is opened in the hydraulic pressure chamber 10, and the piston spring 11 is disposed therein.

また、小径軸部６ｂは、基端側の外周面にブーツ溝６ｄが周設され、該ブーツ溝６ｄと、シリンダボディ４ａの先端側に周設されたシリンダボディ側ブーツ溝４ｃとに、ピストンブーツ１４の両端がそれぞれ装着される。さらに、小径軸部６ｂの外端部には、前記バックプレート２と平行で、外端面に開口するブレーキシュー装着溝６ｅが形成されている。 Further, the small diameter shaft portion 6b has a boot groove 6d circumferentially provided on the outer circumferential surface of the base end side, and the piston Both ends of the boot 14 are attached respectively. Further, a brake shoe mounting groove 6e is formed in the outer end of the small diameter shaft portion 6b, parallel to the back plate 2 and open to the outer end surface.

シリンダボディ４ａのバックプレート側には、バックプレート側に突出するとともに、バックプレート２に当接してボルト止めされる取付部４ｄと、内部にユニオン孔１３を備えたユニオンボス部４ｅと、ブリーダスクリュ１５を取り付けるブリーダボス部（図示せず）とが形成されている。ユニオン孔１３は、ユニオンボルトの雄ねじ部（図示せず）を螺着する雌ねじ孔１３ａ（通孔）と、液圧室１０に開口する小径孔１３ｂとを有し、雌ねじ孔１３ａに螺着したユニオンボルトを介して液圧配管がユニオン孔１３に連結され、液圧配管から液圧室１０に液圧が供給される。 On the back plate side of the cylinder body 4a, there is a mounting part 4d that protrudes toward the back plate side and is bolted to the back plate 2, a union boss part 4e that has a union hole 13 inside, and a bleeder screw. A bleeder boss portion (not shown) to which 15 is attached is formed. The union hole 13 has a female threaded hole 13a (through hole) into which a male threaded portion (not shown) of a union bolt is screwed, and a small diameter hole 13b that opens into the hydraulic pressure chamber 10, and has a small diameter hole 13b that is screwed into the female threaded hole 13a. A hydraulic pipe is connected to the union hole 13 via a union bolt, and hydraulic pressure is supplied to the hydraulic chamber 10 from the hydraulic pipe.

このような車両用ドラムブレーキ１を組み付ける際に、ホイルシリンダ４は、予め、シリンダボディ４ａ内に、ピストンシール１２を嵌着した状態のピストン６やピストンスプリング１１を組み付け、ピストンブーツ１４を取り付けるとともに、ブリーダボス部にブリーダスクリュ１５を取り付けた状態で、輸送用パレット１６に収納され、車両用ドラムブレーキ１の組み付け現場に移送され、バックプレート２の内部に組み付けられる。輸送時のホイルシリンダ４は、図１に示されるように、ユニオン孔１３の雌ねじ孔１３ａに輸送用保護プラグ１７を装着してシリンダ孔４ｂ内を封止し、外部からシリンダ孔４ｂ内に異物が侵入すること防止する。 When assembling such a drum brake 1 for a vehicle, the foil cylinder 4 is assembled with the piston 6 and the piston spring 11 with the piston seal 12 fitted into the cylinder body 4a in advance, and the piston boot 14 is attached. With the bleeder screw 15 attached to the bleeder boss part, it is stored on a transportation pallet 16, transported to a site where the vehicle drum brake 1 is assembled, and assembled inside the back plate 2. When transporting the foil cylinder 4, as shown in FIG. 1, the transport protection plug 17 is attached to the female threaded hole 13a of the union hole 13 to seal the inside of the cylinder hole 4b and prevent foreign matter from entering the cylinder hole 4b from the outside. prevent the intrusion.

輸送用保護プラグ１７は、樹脂、好ましくは弾性を有する樹脂、例えば、ポリ塩化ビニルや酢酸ビニル等で形成されるもので、雌ねじ孔１３ａの内径よりも僅かに小径に形成された筒部１７ａと、該筒部１７ａの上部に設けられ、雌ねじ孔１３ａの内径よりも大径に形成されたフランジ部１７ｂと、該フランジ部１７ｂの上部に連続して設けられ、フランジ部１７ｂよりも大径に形成される大径フランジ部１７ｃとを一体に備え、筒部１７ａからフランジ部１７ｂに亘って、連通溝１８が形成されている。連通溝１８は、筒部１７ａの外周面に設けられ、筒部１７ａの軸線方向に延出する第１溝部１８ａと、第１溝部１８ａに連続してフランジ部１７ｂの筒部側面に設けられ、第１溝部１８ａに対して直交方向に延出する第２溝部１８ｂとを有し、輸送用保護プラグ１７を雌ねじ孔１３ａに装着した際に、連通溝１８を介してシリンダ孔４ｂ内と外気とが連通する。 The transport protection plug 17 is made of a resin, preferably an elastic resin such as polyvinyl chloride or vinyl acetate, and has a cylindrical portion 17a formed with a slightly smaller diameter than the inner diameter of the female screw hole 13a. , a flange portion 17b provided at the top of the cylindrical portion 17a and having a larger diameter than the inner diameter of the female threaded hole 13a; A communication groove 18 is formed integrally with a large-diameter flange portion 17c that is formed, and extends from the cylindrical portion 17a to the flange portion 17b. The communication groove 18 is provided on the outer circumferential surface of the cylindrical portion 17a and extends in the axial direction of the cylindrical portion 17a, and is provided on the side surface of the cylindrical portion of the flange portion 17b continuously from the first groove 18a, It has a second groove part 18b extending perpendicularly to the first groove part 18a, and when the transport protection plug 17 is attached to the female threaded hole 13a, the inside of the cylinder hole 4b and the outside air are connected through the communication groove 18. communicate.

ホイルシリンダ４の輸送時には、ガタ付きを抑制するために、双方のピストン６，６をピストンスプリング１１の弾発力に抗して、シリンダ孔内部に押し込んだ状態で輸送用パレット１６に収納される。この時、ユニオン孔１３の雌ねじ孔１３ａに輸送用保護プラグ１７を装着した状態で、双方のピストン６，６をシリンダ孔内部に押し込むことから、液圧室１０に内圧が掛かるが、連通溝１８を介して内圧を外気に逃がすことができ、輸送用保護プラグ１７が雌ねじ孔１３ａから抜ける虞がなく、輸送時にシリンダ孔４ｂ内に異物が侵入することを確実に防止することができる。また、ホイルシリンダ４を輸送用パレット１６に収納すると、ピストン６，６がピストンスプリング１１の弾発力により離反する方向にそれぞれ移動し、ピストン６，６の先端が輸送用パレット１６に圧着することでホイルシリンダ４を固定し、輸送時にホイルシリンダ４がガタつくことを抑制できる。 When transporting the foil cylinder 4, it is stored on a transport pallet 16 with both pistons 6 pushed into the cylinder hole against the elastic force of the piston spring 11 in order to suppress rattling. . At this time, with the transportation protection plug 17 attached to the female threaded hole 13a of the union hole 13, both pistons 6, 6 are pushed into the cylinder hole, so internal pressure is applied to the hydraulic chamber 10, but the communication groove 18 The internal pressure can be released to the outside air through the cylinder, there is no risk that the transportation protection plug 17 will come off the female threaded hole 13a, and it is possible to reliably prevent foreign matter from entering the cylinder hole 4b during transportation. Moreover, when the foil cylinder 4 is stored in the transportation pallet 16, the pistons 6, 6 move in the direction of separation due to the elastic force of the piston spring 11, and the tips of the pistons 6, 6 are pressed against the transportation pallet 16. By fixing the foil cylinder 4, it is possible to prevent the foil cylinder 4 from wobbling during transportation.

一方、車両用ドラムブレーキ１の組み付け現場に輸送されたホイルシリンダ４をバックプレート２の内部に組み付ける際には、輸送用パレット１６からホイルシリンダ４を取り外すと、ピストン６，６がピストンスプリング１１の弾発力により離反する方向にそれぞれ移動するが、この時、液圧室１０には、輸送用保護プラグ１７の連通溝１８を介して外気が導入される。 On the other hand, when assembling the foil cylinder 4 transported to the assembly site of the vehicle drum brake 1 inside the back plate 2, when the foil cylinder 4 is removed from the transportation pallet 16, the pistons 6, 6 are attached to the piston spring 11. They each move in the direction of separation due to the elastic force, and at this time, outside air is introduced into the hydraulic chamber 10 through the communication groove 18 of the transportation protection plug 17.

さらに、ホイルシリンダ４をバックプレート２に組み付ける際には、図５に示されるように、ピストン６，６のブレーキシュー装着溝６ｅ，６ｅにブレーキシュー３，３のウェブ３ａ，３ａの一端部が支持されるが、この時、ブレーキシュー３は、ウェブ３ａ，３ａ間に張設されるリターンスプリング７ａ，７ｂによって、縮径方向に付勢され、両ピストン６，６は、ピストンスプリング１１の弾発力に抗して、シリンダ孔４ｂ内に押し込まれた状態となる。ピストン６，６がシリンダ孔４ｂ内に押し込まれた状態となると液圧室１０に内圧が発生するが、輸送用保護プラグ１７の連通溝１８を介して内圧を外部に逃がすことができ、輸送用保護プラグ１７が雌ねじ孔１３ａから抜ける虞がなく、組み付け現場でシリンダ孔４ｂ内に異物が侵入することを確実に防止できる。また、このように、ホイルシリンダ４をバックプレート２に組み付けた後、輸送用保護プラグ１７を雌ねじ孔１３ａから取り外し、ユニオンボルトを取り付ける。 Furthermore, when assembling the wheel cylinder 4 to the back plate 2, as shown in FIG. At this time, the brake shoe 3 is urged in the diametrical direction by the return springs 7a, 7b stretched between the webs 3a, 3a, and both pistons 6, 6 are supported by the elastic force of the piston spring 11. It is pushed into the cylinder hole 4b against the force. When the pistons 6, 6 are pushed into the cylinder hole 4b, internal pressure is generated in the hydraulic pressure chamber 10, but the internal pressure can be released to the outside via the communication groove 18 of the transportation protection plug 17. There is no fear that the protective plug 17 will come off from the female threaded hole 13a, and it is possible to reliably prevent foreign matter from entering the cylinder hole 4b at the assembly site. Further, after the foil cylinder 4 is assembled to the back plate 2 in this manner, the transport protection plug 17 is removed from the female threaded hole 13a, and a union bolt is attached.

輸送用保護プラグ１７は、このように形成されることにより、ホイルシリンダ４の輸送時や組み付け時にシリンダ孔４ｂ内を確実に封止することができ、異物が侵入することを防止できる。また、連通溝１８は、筒部１７ａの外周面に設けられ、筒部１７ａの軸線方向に延出する第１溝部１８ａと、第１溝部１８ａに連続してフランジ部１７ｂの筒部側面に設けられ、第１溝部に対して直交方向に延出する第２溝部１８ｂとで形成されることにより、連通溝１８の長さを短くすることができる。さらに、フランジ部１７ｂの上部に連続して大径フランジ部１７ｃを設けたことにより、フランジ部１７ｂと大径フランジ部１７ｃの間に指を掛けることができ、輸送用保護プラグ１７の着脱を容易に行うことができる。また、輸送用保護プラグ１７を樹脂で形成したことにより、輸送用保護プラグ１７を安価に形成することができ、より好ましくは弾性を有する樹脂で形成することにより、輸送用保護プラグ１７に適度な弾性を持たせることができ、作業性が向上する。 By being formed in this manner, the transportation protection plug 17 can reliably seal the inside of the cylinder hole 4b during transportation or assembly of the foil cylinder 4, and can prevent foreign matter from entering. Further, the communication groove 18 is provided on the outer circumferential surface of the cylindrical portion 17a and extends in the axial direction of the cylindrical portion 17a, and the communication groove 18 is provided on the side surface of the cylindrical portion of the flange portion 17b continuously from the first groove portion 18a. The length of the communication groove 18 can be shortened by forming the second groove part 18b extending in a direction orthogonal to the first groove part. Furthermore, by providing the large diameter flange part 17c continuously on the upper part of the flange part 17b, it is possible to hang a finger between the flange part 17b and the large diameter flange part 17c, making it easy to attach and detach the protective plug 17 for transportation. can be done. In addition, by forming the transport protection plug 17 with resin, the transport protection plug 17 can be formed at low cost, and more preferably, by forming it with elastic resin, the transport protection plug 17 can be It can be made elastic, improving workability.

なお、本発明の輸送用保護プラグは、上述の形態例のように、ブレーキ装置のシリンダ部に形成した通孔に用いられるものに限らず、内圧が発生する空間部を内部に備えた筐体に形成された通孔に、広く適用することができる。さらに、本発明の輸送用保護プラグは、フランジ部の上部に連続して大径フランジ部を備えていなくてもよく、また、連通孔の形状は内部の空間部と外気とを連通できるものあれば任意である。 The protection plug for transportation of the present invention is not limited to the one used for a through hole formed in the cylinder part of a brake device as in the above-mentioned embodiment, but can also be used for a housing having a space inside where internal pressure is generated. It can be widely applied to through holes formed in. Furthermore, the protective plug for transportation of the present invention does not need to have a continuous large-diameter flange at the top of the flange, and the shape of the communication hole may be any shape that allows communication between the internal space and the outside air. It is optional.

１…車両用ドラムブレーキ、２…バックプレート、３…ブレーキシュー、３ａ…ウェブ、３ｂ…リム、３ｃ…ライニング、４…ホイルシリンダ、４ａ…シリンダボディ、４ｂ…シリンダ孔、４ｃ…シリンダボディ側ブーツ溝、４ｄ…取付部、４ｅ…ユニオンボス部、５…アンカー、６…ピストン、６ａ…本体部、６ｂ…小径軸部、６ｃ…ピストンシール溝、６ｄ…ブーツ溝、６ｅ…ブレーキシュー装着溝、７ａ，７ｂ…リターンスプリング、８…制動間隙自動調整装置、９ａ…パーキングレバー、９ｂ…支軸、１０…液圧室、１１…ピストンスプリング、１２…ピストンシール、１３…ユニオン孔、１３ａ…雌ねじ孔、１３ｂ…小径孔、１４…ピストンブーツ、１５…ブリーダスクリュ、１６…輸送用パレット、１７…輸送用保護プラグ、１７ａ…筒部、１７ｂ…フランジ部、１７ｃ…大径フランジ部、１８…連通溝、１８ａ…第１溝部、１８ｂ…第２溝部 1... Vehicle drum brake, 2... Back plate, 3... Brake shoe, 3a... Web, 3b... Rim, 3c... Lining, 4... Wheel cylinder, 4a... Cylinder body, 4b... Cylinder hole, 4c... Cylinder body side boot Groove, 4d...Mounting part, 4e...Union boss part, 5...Anchor, 6...Piston, 6a...Body part, 6b...Small diameter shaft part, 6c...Piston seal groove, 6d...Boot groove, 6e...Brake shoe mounting groove, 7a, 7b... Return spring, 8... Braking gap automatic adjustment device, 9a... Parking lever, 9b... Support shaft, 10... Hydraulic pressure chamber, 11... Piston spring, 12... Piston seal, 13... Union hole, 13a... Female screw hole , 13b...Small diameter hole, 14...Piston boot, 15...Bleeder screw, 16...Transportation pallet, 17...Transportation protection plug, 17a...Cylinder part, 17b...Flange part, 17c...Large diameter flange part, 18...Communication groove , 18a...first groove part, 18b...second groove part

Claims (4)

内圧が発生する空間部を内部に備えた筐体に、前記空間部の内外を連通させる通孔を形成した製品に用いられ、前記通孔に着脱可能に装着され、前記空間部を封止する輸送用保護プラグにおいて、
前記通孔に挿入される筒部と、該筒部の一端部に設けられ、前記通孔の内径よりも大径に形成されるフランジ部とを一体に備えるとともに、前記空間部の内外を連通させる連通溝を形成し、
前記連通溝は、前記筒部の外周面に設けられ、該筒部の軸線方向に延出する第１溝部と、該第１溝部に連続して前記フランジ部の筒部側面に設けられ、該第１溝部に対して直交方向に延出する第２溝部とを備えていることを特徴としている輸送用保護プラグ。 Used for products that have a housing that has a space inside where internal pressure is generated, and a through hole that communicates the inside and outside of the space, and is removably attached to the through hole to seal the space. In transportation protection plugs,
A cylindrical portion to be inserted into the through hole and a flange portion provided at one end of the cylindrical portion and having a diameter larger than the inner diameter of the through hole are integrally provided, and the inside and outside of the space are communicated. A communication groove is formed to
The communication groove is provided on the outer peripheral surface of the cylindrical portion and extends in the axial direction of the cylindrical portion, and is provided on the side surface of the cylindrical portion of the flange portion continuously from the first groove portion, and A protective plug for transportation, comprising : a second groove extending in a direction perpendicular to the first groove . 前記フランジ部の上部に連続して、該フランジ部よりも大径に形成される大径フランジ部を設けたことを特徴とする請求項１記載の輸送用保護プラグ。 2. The protective plug for transportation according to claim 1 , further comprising a large-diameter flange portion having a diameter larger than that of the flange portion, which is continuous to the upper portion of the flange portion. 樹脂で形成されることを特徴とする請求項１又は２記載の輸送用保護プラグ。 The protective plug for transportation according to claim 1 or 2, characterized in that it is made of resin. 前記筐体は、車両用ブレーキ装置のシリンダ部であり、前記通孔は、前記シリンダ部に形成されるユニオン孔であることを特徴とする請求項１乃至３のいずれか１項記載の輸送用保護プラグ。 The vehicle for transportation according to any one of claims 1 to 3 , wherein the housing is a cylinder portion of a vehicle brake device, and the through hole is a union hole formed in the cylinder portion. protection plug.
JP2022508060A 2020-03-16 2020-12-14 Transport protection plug Active JP7442620B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2020045220 2020-03-16
JP2020045220 2020-03-16
PCT/JP2020/046505 WO2021186815A1 (en) 2020-03-16 2020-12-14 Protection plug for transportation

Publications (2)

Publication Number Publication Date
JPWO2021186815A1 JPWO2021186815A1 (en) 2021-09-23
JP7442620B2 true JP7442620B2 (en) 2024-03-04

Family

ID=77771931

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2022508060A Active JP7442620B2 (en) 2020-03-16 2020-12-14 Transport protection plug

Country Status (3)

Country Link
JP (1) JP7442620B2 (en)
CN (1) CN115335612A (en)
WO (1) WO2021186815A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004011697A (en) 2002-06-04 2004-01-15 Shin Ei Tech:Kk Plug member for air ventilation
JP2005076835A (en) 2003-09-03 2005-03-24 Nissin Kogyo Co Ltd Liquid supply pipe connection structure of actuator for vehicles
JP2008079794A (en) 2006-09-27 2008-04-10 Asahi Kasei Kuraray Medical Co Ltd Coupling for extracoporeal circulation module and medical adaptor equipped with the coupling
JP3152002U (en) 2009-02-27 2009-07-16 株式会社島津製作所 Sealing plug and hydraulic device to which the sealing plug is attached
JP2011194921A (en) 2010-03-17 2011-10-06 Akebono Brake Ind Co Ltd Bleeder plug
JP2019041074A (en) 2017-08-29 2019-03-14 富士電機株式会社 Cooler for semiconductor module, plug member, and system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004011697A (en) 2002-06-04 2004-01-15 Shin Ei Tech:Kk Plug member for air ventilation
JP2005076835A (en) 2003-09-03 2005-03-24 Nissin Kogyo Co Ltd Liquid supply pipe connection structure of actuator for vehicles
JP2008079794A (en) 2006-09-27 2008-04-10 Asahi Kasei Kuraray Medical Co Ltd Coupling for extracoporeal circulation module and medical adaptor equipped with the coupling
JP3152002U (en) 2009-02-27 2009-07-16 株式会社島津製作所 Sealing plug and hydraulic device to which the sealing plug is attached
JP2011194921A (en) 2010-03-17 2011-10-06 Akebono Brake Ind Co Ltd Bleeder plug
JP2019041074A (en) 2017-08-29 2019-03-14 富士電機株式会社 Cooler for semiconductor module, plug member, and system

Also Published As

Publication number Publication date
JPWO2021186815A1 (en) 2021-09-23
WO2021186815A1 (en) 2021-09-23
CN115335612A (en) 2022-11-11

Similar Documents

Publication Publication Date Title
EP2020524A1 (en) Caliper brake system
TWI778213B (en) Operating device
US10174798B2 (en) Spring applied, hydraulically released wheel-mount brake having improved stationary disc support
US20070051568A1 (en) Tapered pin design
CN107956823B (en) Exhaust valve for bicycle hydraulic brake system
JP7442620B2 (en) Transport protection plug
US9284999B2 (en) Guide pin for disc brake assembly, disc brake assembly including such a guide pin and method for producing a disc brake assembly including such a guide pin
US2903099A (en) Ventilated wheel brake
KR101624516B1 (en) Brake hose assembly for vehicle
US6460449B2 (en) Automotive actuator retaining construction
JP2009150530A (en) Caliper body supporting structure of disc brake for vehicle
KR20140117976A (en) Air bleeding apparatus
US20180340583A1 (en) Spring applied, hydraulically released brake with manual override
TWI651225B (en) Main pump for vehicles
JP2008195119A (en) Spring brake actuator
US6899017B2 (en) Wheel cylinder for actuating a vehicle brake and a method of manufacturing same
JP5603797B2 (en) Vehicle disc brake
JP6338941B2 (en) Automatic shoe clearance adjustment structure for drum brakes for vehicles
JP4387852B2 (en) Vehicle disc brake
JP4343363B2 (en) Disc brake
US1912218A (en) Hydraulic brake actuating unit
CA2967656A1 (en) Spring applied, hydraulically released wheel-mount brake having improved stationary disc support
KR101399374B1 (en) Hydrodynamic break system
JP2012241800A (en) Brake chamber
KR100312596B1 (en) Drum Type Brake Structure Of Automotive Vehicle

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20231005

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20231114

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20240105

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20240123

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20240220

R150 Certificate of patent or registration of utility model

Ref document number: 7442620

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150