JP2017116009A - Apparatus with adjustment bolt - Google Patents

Apparatus with adjustment bolt Download PDF

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Publication number
JP2017116009A
JP2017116009A JP2015253234A JP2015253234A JP2017116009A JP 2017116009 A JP2017116009 A JP 2017116009A JP 2015253234 A JP2015253234 A JP 2015253234A JP 2015253234 A JP2015253234 A JP 2015253234A JP 2017116009 A JP2017116009 A JP 2017116009A
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Japan
Prior art keywords
cover
bolt
collar
adjustment bolt
wall
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Granted
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JP2015253234A
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Japanese (ja)
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JP6466828B2 (en
Inventor
貢 奥田
Mitsugi Okuda
貢 奥田
洋樹 尾曽
Hiroki Oso
洋樹 尾曽
智也 秋朝
Tomoya Akitomo
智也 秋朝
隆太郎 小村
Ryutaro Komura
隆太郎 小村
陽 田中
Yo Tanaka
陽 田中
直也 櫻井
Naoya Sakurai
直也 櫻井
能和 竹本
Norikazu Takemoto
能和 竹本
篠原　祐次
Yuji Shinohara
祐次 篠原
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Kubota Corp
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Kubota Corp
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Priority to JP2015253234A priority Critical patent/JP6466828B2/en
Priority to KR1020160134856A priority patent/KR102592127B1/en
Priority to CN201611093219.6A priority patent/CN106917710B/en
Publication of JP2017116009A publication Critical patent/JP2017116009A/en
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Publication of JP6466828B2 publication Critical patent/JP6466828B2/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/803—Fuel injection apparatus manufacture, repair or assembly using clamp elements and fastening means; e.g. bolts or screws

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus with an adjustment bolt capable of suppressing removal of a cover 5 for preventing alteration of an adjustment position of the adjustment bolt 3.SOLUTION: In an apparatus with an adjustment bolt, including a bolt mounting wall 2 provided with a female screw hole 1, an adjustment bolt 3 screw-fitted to the female screw hole 1 and mounted on the bolt mounting wall 2, a lock nut 4 screw-fitted to the adjustment bolt 3, a cover 5 externally fitted to the lock nut 4 rotatably, and a retaining portion 6 for retaining the cover 5, the retaining portion 6 includes a collar 7 internal fitted to a peripheral wall 5a of the cover 5 by interference fitting, and a collar locking portion 8 supported by the adjustment bolt 3, and the cover 5 to be pulled out from the lock nut 4 in a direction to separate from the bolt mounting wall 2 is constituted to be locked to the collar locking portion 8 through the collar 7.SELECTED DRAWING: Figure 1

Description

本発明は、調節ボルト付き機器に関し、詳しくは、調節ボルトの調節位置の改竄を防止するカバーの抜き取りを抑制することができる、調節ボルト付き機器に関する。   The present invention relates to an apparatus with an adjustment bolt, and more particularly, to an apparatus with an adjustment bolt that can suppress removal of a cover that prevents tampering of an adjustment position of the adjustment bolt.

従来、メネジ孔が形成されたボルト取付壁と、メネジ孔にネジ嵌合され、ボルト取付壁に取り付けられた調節ボルトと、調節ボルトにネジ嵌合されたロックナットと、ロックナットに回転可能に外嵌されたカバーと、カバーを抜け止めする抜け止め部を備えた、調節ボルト付き機器がある(例えば、特許文献１参照)。   Conventionally, a bolt mounting wall in which a female screw hole is formed, an adjustment bolt that is screwed into the female screw hole and attached to the bolt mounting wall, a lock nut that is screwed to the adjustment bolt, and a lock nut that can be rotated. There is a device with an adjustment bolt that includes an externally fitted cover and a retaining portion for retaining the cover (see, for example, Patent Document 1).

この種の機器では、調節ボルトでエンジンの最大出力時の燃料噴射量等を調節した後は、ロックナットをカバーで覆い、調節ボルトの調節位置の改竄を防止することができる利点がある。   This type of device has an advantage that after adjusting the fuel injection amount at the maximum output of the engine with the adjusting bolt, the lock nut can be covered with a cover to prevent falsification of the adjusting position of the adjusting bolt.

特許文献１の発明では、カバーの抜け止め部は、カバーの周壁の開口端部で構成されるカシメ部と、カシメ部を係止するロックナットの係止部を備え、カバーの周壁には、カシメ部の変形を容易にする変形用スリットが設けられている。   In the invention of Patent Document 1, the retaining portion of the cover includes a caulking portion constituted by an opening end portion of the peripheral wall of the cover, and a locking portion of a lock nut that locks the caulking portion. A deformation slit that facilitates deformation of the caulking portion is provided.

特開平７−７１３４５号公報(図１〜図５参照)JP-A-7-71345 (see FIGS. 1 to 5)

《問題点》 カバーが不正に抜き取られるおそれがある。
特許文献１の発明では、調節ボルトの調節位置を改竄するため、変形用スリットにマイナスドライバー等の工具が差し込まれ、カバーの周壁の変形や破壊により、カバーが不正に抜き取られるおそれがある。 <Problem> The cover may be removed illegally.
In the invention of Patent Document 1, in order to falsify the adjustment position of the adjustment bolt, a tool such as a flat-blade screwdriver is inserted into the deformation slit, and there is a possibility that the cover may be illegally extracted due to deformation or destruction of the peripheral wall of the cover.

本発明の課題は、調節ボルトの調節位置の改竄を防止するカバーの不正な抜き取りを防止することができる調節ボルト付き機器を提供することにある。   The subject of this invention is providing the apparatus with an adjustment bolt which can prevent the unauthorized removal of the cover which prevents the tampering of the adjustment position of an adjustment bolt.

請求項１に係る発明の発明特定事項は、次の通りである。
図１(Ａ)，図３(Ａ)，図５(Ａ)に例示するように、メネジ孔(１)が形成されたボルト取付壁(２)と、
メネジ孔(１)にネジ嵌合され、ボルト取付壁(２)に取り付けられた調節ボルト(３)と、
調節ボルト(３)にネジ嵌合されたロックナット(４)と、
ロックナット(４)に回転可能に外嵌されたカバー(５)と、
カバー(５)を抜け止めする抜け止め部(６)を備えた、調節ボルト付き機器において、
図１(Ａ)，図３(Ａ)，図５(Ａ)に例示するように、抜け止め部(６)は、
カバー(５)の周壁(５ａ)に締まり嵌めで内嵌されたカラー(７)と、
調節ボルト(３)に支持されたカラー係止部(８)を備え、
ボルト取付壁(２)から離れる向きにロックナット(４)から抜き取られようとするカバー(５)が、カラー(７)を介してカラー係止部(８)に係止されるように構成されている、ことを特徴とする調節ボルト付き機器。 Invention specific matters of the invention according to claim 1 are as follows.
As illustrated in FIGS. 1 (A), 3 (A), and 5 (A), a bolt mounting wall (2) in which a female screw hole (1) is formed;
An adjustment bolt (3) screwed into the female screw hole (1) and attached to the bolt mounting wall (2);
A lock nut (4) screwed to the adjustment bolt (3);
A cover (5) rotatably fitted on the lock nut (4);
In a device with an adjustment bolt, provided with a retaining part (6) for retaining the cover (5),
As illustrated in FIGS. 1 (A), 3 (A), and 5 (A), the retaining portion (6)
A collar (7) fitted inside the peripheral wall (5a) of the cover (5) with an interference fit;
A collar locking part (8) supported by the adjustment bolt (3);
The cover (5) to be removed from the lock nut (4) in a direction away from the bolt mounting wall (2) is configured to be locked to the collar locking portion (8) via the collar (7). A device with an adjusting bolt, characterized by that.

(請求項１に係る発明)
請求項１に係る発明は、次の効果を奏する。
《効果》 カバーの不正な抜き取りを防止することができる。
図１(Ａ)，図３(Ａ)，図５(Ａ)に例示するように、本発明では、ボルト取付壁(２)から離れる向きにロックナット(４)から抜き取られようとするカバー(５)が、カラー(７)を介してカラー係止部(８)に係止されるように構成されているので、前記特許文献１の発明と異なり、カバー(５)の周壁(５ａ)に変形用スリットのような工具差し込み口が形成されないことに加え、カラー(７)の内嵌でカバー(５)の周壁(５ａ)が補強される。これにより、カバー(５)の周壁(５ａ)の変形や破壊が抑制され、カバー(５)の不正な抜き取りを防止することができる。 (Invention of Claim 1)
The invention according to claim 1 has the following effects.
<Effect> It is possible to prevent unauthorized removal of the cover.
In the present invention, as illustrated in FIGS. 1 (A), 3 (A), and 5 (A), in the present invention, a cover that is to be extracted from the lock nut (4) in a direction away from the bolt mounting wall (2). 5) is configured to be locked to the collar locking portion (8) via the collar (7), so that unlike the invention of Patent Document 1, the peripheral wall (5a) of the cover (5) In addition to the fact that a tool insertion hole such as a deformation slit is not formed, the peripheral wall (5a) of the cover (5) is reinforced by the internal fitting of the collar (7). Thereby, a deformation | transformation and destruction of the surrounding wall (5a) of a cover (5) are suppressed, and unauthorized removal of a cover (5) can be prevented.

(請求項２に係る発明)
請求項２に係る発明は、請求項１に係る発明の効果に加え、次の効果を奏する。
《効果》 カバーの周壁の外径を小径にすることができる。
図１(Ａ)，図３(Ａ)に例示するように、本発明では、カラー(７)は、ロックナット(４)の小径部(１０)に回転可能に外嵌され、カバー(５)の周壁(５ａ)に締まり嵌めで内嵌されているので、カバー(５)の周壁(５ａ)の外径を小径にすることができる。 (Invention of Claim 2)
The invention according to claim 2 has the following effect in addition to the effect of the invention according to claim 1.
<Effect> The outer diameter of the peripheral wall of the cover can be reduced.
As illustrated in FIGS. 1 (A) and 3 (A), in the present invention, the collar (7) is rotatably fitted around the small diameter portion (10) of the lock nut (4), and the cover (5). Since the inner wall of the cover (5a) is fitted with an interference fit, the outer diameter of the peripheral wall (5a) of the cover (5) can be reduced.

《効果》 カバーの不正な抜き取りを防止することができる。
図１(Ａ)，図３(Ａ)に例示するように、本発明では、カラー(７)は、カバー(５)の周壁(５ａ)の先端開口部(１１)に締まり嵌めで内嵌されているので、カバー(５)の周壁(５ａ)の先端開口部(１１)が補強される。これにより、カバー(５)の周壁(５ａ)の先端開口部(１１)の変形や破壊が抑制され、カバー(５)の不正な抜き取りを防止することができる。 <Effect> It is possible to prevent unauthorized removal of the cover.
As illustrated in FIGS. 1 (A) and 3 (A), in the present invention, the collar (7) is fitted into the front end opening (11) of the peripheral wall (5a) of the cover (5) by an interference fit. Therefore, the tip opening (11) of the peripheral wall (5a) of the cover (5) is reinforced. Thereby, deformation | transformation and destruction of the front-end | tip opening part (11) of the surrounding wall (5a) of a cover (5) are suppressed, and unauthorized removal of a cover (5) can be prevented.

(請求項３に係る発明)
請求項３に係る発明は、請求項１または請求項２に係る発明の効果に加え、次の効果を奏する。
《効果》 カバーの不正な抜き取りを防止することができる。
図１(Ａ)，図５(Ａ)に例示するように、この発明では、カバー(５)の周壁(５ａ)の先端開口縁(１３)は、ボルト取付壁(２)に当接されているので、カバー(５)の周壁(５ａ)の先端開口縁(１３)とボルト取付壁(２)の間にマイナスドライバー等の工具を差し込まれる隙間が形成されず、カバー(５)の周壁(５ａ)の先端開口縁(１３)の変形や破壊が抑制され、カバー(５)の不正な抜き取りを防止することができる。 (Invention of Claim 3)
The invention according to claim 3 has the following effect in addition to the effect of the invention according to claim 1 or claim 2.
<Effect> It is possible to prevent unauthorized removal of the cover.
As illustrated in FIGS. 1 (A) and 5 (A), in the present invention, the tip opening edge (13) of the peripheral wall (5a) of the cover (5) is brought into contact with the bolt mounting wall (2). Therefore, a gap for inserting a tool such as a screwdriver is not formed between the tip opening edge (13) of the peripheral wall (5a) of the cover (5) and the bolt mounting wall (2), and the peripheral wall of the cover (5) ( Deformation and destruction of the tip opening edge (13) of 5a) are suppressed, and unauthorized removal of the cover (5) can be prevented.

(請求項４に係る発明)
請求項４に係る発明は、請求項１または請求項２に係る発明の効果に加え、次の効果を奏する。
《効果》 カバーの不正な抜き取りを防止することができる。
図３(Ａ)に例示するように、この発明では、カバー(５)の周壁(５ａ)の先端開口縁(１３)は、フランジ(１４)に当接されているので、カバー(５)の周壁(５ａ)の先端開口縁(１３)とフランジ(１４)の間にマイナスドライバー等の工具を差し込まれる隙間が形成されず、カバー(５)の周壁(５ａ)の先端開口縁(１３)の変形や破壊が抑制され、カバー(５)の不正な抜き取りを防止することができる。 (Invention of Claim 4)
The invention according to claim 4 has the following effect in addition to the effect of the invention according to claim 1 or claim 2.
<Effect> It is possible to prevent unauthorized removal of the cover.
As illustrated in FIG. 3A, in the present invention, the tip opening edge (13) of the peripheral wall (5a) of the cover (5) is in contact with the flange (14). A gap for inserting a tool such as a flathead screwdriver is not formed between the tip opening edge (13) of the peripheral wall (5a) and the flange (14), and the tip opening edge (13) of the peripheral wall (5a) of the cover (5) is not formed. Deformation and destruction are suppressed, and unauthorized removal of the cover (5) can be prevented.

(請求項５に係る発明)
請求項５に係る発明は、請求項４に係る発明の効果に加え、次の効果を奏する。
《効果》 周辺部品に対するフランジの干渉や接近を回避することができる。
図３(Ａ)に例示するように、この発明では、スペーサ部(１５)でフランジ(１４)がボルト取付壁(２)から離間されているので、ボルト取付壁(２)に取り付けられた他の調節ボルト等の周辺部品に対するフランジ(１４)の干渉や接近を回避することができる。 (Invention according to claim 5)
The invention according to claim 5 has the following effect in addition to the effect of the invention according to claim 4.
<Effect> It is possible to avoid interference and approach of the flange to the peripheral parts.
As illustrated in FIG. 3 (A), in the present invention, the flange (14) is separated from the bolt mounting wall (2) by the spacer portion (15). It is possible to avoid interference and approach of the flange (14) to peripheral parts such as the adjusting bolt.

(請求項６に係る発明)
請求項６に係る発明は、請求項１から請求項５のいずれかに係る発明の効果に加え、次の効果を奏する。
《効果》 カバーの不正な抜き取りを防止することができる。
図１(Ｅ)，図３(Ｆ)，図５(Ｅ)に例示するように、この発明では、隣り合うレンチ係合面(１６)(１６)の境界に形成された面取り部(１７)を備えているので、面取り部(１７)の除肉の分だけ、カバー(５)の周壁(５ａ)の内径を小さくでき、その分だけカバー(５)の周壁(５ａ)の肉厚を増加させ、その剛性を高めることができる。これにより、カバー(５)の周壁(５ａ)の変形や破壊が抑制され、カバー(５)の不正な抜き取りを防止することができる。 (Invention of Claim 6)
The invention according to claim 6 has the following effects in addition to the effects of the invention according to any one of claims 1 to 5.
<Effect> It is possible to prevent unauthorized removal of the cover.
As illustrated in FIGS. 1 (E), 3 (F), and 5 (E), in the present invention, the chamfered portion (17) formed at the boundary between adjacent wrench engaging surfaces (16) and (16). Therefore, the inner diameter of the peripheral wall (5a) of the cover (5) can be reduced by the thickness of the chamfered portion (17), and the thickness of the peripheral wall (5a) of the cover (5) is increased accordingly. And increase its rigidity. Thereby, a deformation | transformation and destruction of the surrounding wall (5a) of a cover (5) are suppressed, and unauthorized removal of a cover (5) can be prevented.

(請求項７に係る発明)
請求項７に係る発明は、請求項１に係る発明の効果に加え、次の効果を奏する。
《効果》 カバーの周壁の外径を小径にすることができる。
図５(Ａ)に例示するように、本発明では、カラー(７)は、小径部(２０)に外嵌され、カバー(５)の周壁(５ａ)に締まり嵌めで内嵌されるので、カバー(５)の周壁(５ａ)の外径を小径にすることができる。 (Invention of Claim 7)
The invention according to claim 7 has the following effect in addition to the effect of the invention according to claim 1.
<Effect> The outer diameter of the peripheral wall of the cover can be reduced.
As exemplified in FIG. 5 (A), in the present invention, the collar (7) is externally fitted to the small diameter portion (20), and is fitted to the peripheral wall (5a) of the cover (5) by interference fit. The outer diameter of the peripheral wall (5a) of the cover (5) can be reduced.

(請求項８に係る発明)
請求項８に係る発明は、請求項７に係る発明の効果に加え、次の効果を奏する。
《効果》 カバーの抜け止めを補強することができる。
図５(Ｆ)(Ｇ)に例示するように、この発明では、カバー(５)の抜け止め補強部(２３)でカバー(５)の抜け止めを補強することができる。 (Invention of Claim 8)
The invention according to claim 8 has the following effect in addition to the effect of the invention according to claim 7.
<Effect> The cover can be prevented from coming off.
As illustrated in FIGS. 5F and 5G, according to the present invention, it is possible to reinforce the retaining of the cover 5 with the retaining reinforcing portion 23 of the cover 5.

(請求項９に係る発明)
請求項９に係る発明は、請求項１から請求項８のいずれかに係る発明の効果に加え、次の効果を奏する。
《効果》 カバーの不正な抜き取りを防止することができる。
図１(Ａ)，図３(Ａ)，図５(Ａ)に例示するように、この発明では、カバー(５)の周壁(５ａ)の基端に端壁(２６)を備えているので、カバー(５)の周壁(５ａ)の基端部が端壁(２６)で補強され、この基端部の変形や破壊が抑制され、カバー(５)の不正な抜き取りを防止することができる。 (Invention according to claim 9)
The invention according to claim 9 has the following effects in addition to the effects of the invention according to any one of claims 1 to 8.
<Effect> It is possible to prevent unauthorized removal of the cover.
As illustrated in FIGS. 1 (A), 3 (A), and 5 (A), the present invention includes an end wall (26) at the base end of the peripheral wall (5a) of the cover (5). The base end portion of the peripheral wall (5a) of the cover (5) is reinforced by the end wall (26), and deformation and destruction of the base end portion are suppressed, and unauthorized removal of the cover (5) can be prevented. .

(請求項１０に係る発明)
請求項１０に係る発明は、請求項９に係る発明の効果に加え、次の効果を奏する。
《効果》 カバー内の防錆を図ることができる。
図１(Ａ)，図３(Ａ)，図５(Ａ)に例示するように、この発明では、補強端壁(２６)は、貫通孔(２７)を備えているので、貫通孔(２)を介してカバー(５)内の通気性が確保される。また、カバー(５)に防錆メッキを施すために、カバー(５)をメッキ液に浸漬した場合に、貫通孔(２７)による空気抜きで、カバー(５)の内面にも容易にメッキを施すことができる。これらの理由により、カバー(５)内の防錆を図ることができる。 (Invention of Claim 10)
The invention according to claim 10 has the following effect in addition to the effect of the invention according to claim 9.
<Effect> Rust prevention in the cover can be achieved.
As illustrated in FIGS. 1 (A), 3 (A), and 5 (A), in the present invention, the reinforcing end wall (26) includes the through hole (27). ) Ensures air permeability in the cover (5). In addition, when the cover (5) is immersed in a plating solution in order to apply rust-proof plating to the cover (5), the inner surface of the cover (5) is easily plated by venting air through the through hole (27). be able to. For these reasons, rust prevention in the cover (5) can be achieved.

本発明の第１実施形態に係る燃料調節ボルト付きディーゼルエンジンを説明する図で、図１(Ａ)は要部の縦断正面図、図１(Ｂ)は図１(Ａ)のＢ−Ｂ線断面図、図１(Ｃ)は図１(Ａ)のＣ−Ｃ線断面図、図１(Ｄ)は図１(Ａ)のＤ−Ｄ線断面図、図１(Ｅ)はナットの変形例の図１(Ｃ)相当図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the diesel engine with a fuel adjustment bolt which concerns on 1st Embodiment of this invention, FIG. 1 (A) is a vertical front view of the principal part, FIG.1 (B) is the BB line of FIG. 1C is a sectional view taken along the line CC of FIG. 1A, FIG. 1D is a sectional view taken along the line DD of FIG. 1A, and FIG. 1E is a deformation of the nut. It is an equivalent figure of FIG.1 (C) of an example. 図１(Ａ)に示す部分とその周辺部分の縦断正面図である。It is a vertical front view of the part shown to FIG. 1 (A), and its peripheral part. 本発明の第２実施形態に係る燃料調節ボルト付きディーゼルエンジンを説明する図で、図３(Ａ)は要部の縦断正面図、図３(Ｂ)は図３(Ａ)のＢ−Ｂ線断面図、図３(Ｃ)は図３(Ａ)のＣ−Ｃ線断面図、図３(Ｄ)は図３(Ａ)のＤ−Ｄ線断面図、図３(Ｅ)は図３(Ａ)のＥ−Ｅ線断面図、図３(Ｆ)はナットの変形例の図３(Ｃ)相当図である。It is a figure explaining the diesel engine with a fuel adjustment volt | bolt which concerns on 2nd Embodiment of this invention, FIG. 3 (A) is a vertical front view of the principal part, FIG.3 (B) is the BB line of FIG. 3 (A). 3C is a cross-sectional view taken along line CC in FIG. 3A, FIG. 3D is a cross-sectional view taken along line DD in FIG. 3A, and FIG. FIG. 3A is a cross-sectional view taken along the line EE of FIG. 3A, and FIG. 3F is a view corresponding to FIG. 図３(Ａ)に示す部分とその周辺部分の縦断正面図である。FIG. 4 is a longitudinal front view of the portion shown in FIG. 本発明の第３実施形態に係る燃料調節ボルト付きディーゼルエンジンを説明する図で、図５(Ａ)は要部の縦断正面図、図５(Ｂ)は図５(Ａ)のＢ−Ｂ線断面図、図５(Ｃ)は図５(Ａ)のＣ−Ｃ線断面図、図５(Ｄ)は図５(Ａ)のＤ−Ｄ線断面図、図５(Ｅ)はナットの変形例の図５(Ｄ)相当図、図５(Ｆ)は図１(Ａ)のＦ部分の拡大図、図５(Ｇ)は突起の変形例の図５(Ｆ)相当図である。It is a figure explaining the diesel engine with a fuel adjustment volt | bolt which concerns on 3rd Embodiment of this invention, FIG. 5 (A) is a vertical front view of the principal part, FIG.5 (B) is the BB line of FIG. 5 (A). 5C is a sectional view taken along the line CC of FIG. 5A, FIG. 5D is a sectional view taken along the line DD of FIG. 5A, and FIG. 5E is a deformation of the nut. FIG. 5D is an example corresponding to FIG. 5D, FIG. 5F is an enlarged view of a portion F in FIG. 1A, and FIG. 5G is a diagram corresponding to FIG.

図１(Ａ)〜(Ｅ)，図２は本発明の第１実施形態，図３(Ａ)〜(Ｆ)，図４は第２実施形態，図５は第３実施形態に係る調節ボルト付きエンジンを説明する図であり、各実施形態では、立形で直列多気筒の燃料調節ボルト付きディーゼルエンジンについて説明する。   1 (A) to (E) and FIG. 2 are the first embodiment of the present invention, FIGS. 3 (A) to (F), FIG. 4 is the second embodiment, and FIG. 5 is the adjusting bolt according to the third embodiment. In each embodiment, a vertical and in-line multi-cylinder diesel engine with a fuel adjustment bolt will be described.

第１実施形態について説明する。
図２に示すように、第１実施形態のエンジンは、燃料噴射装置(３０)を備えている。
燃料噴射装置(３０)は、ポンプ収容ケース(３１)と燃料噴射ポンプ(３２)とメカニカルガバナ(２９)を備えている。 A first embodiment will be described.
As shown in FIG. 2, the engine of the first embodiment includes a fuel injection device (30).
The fuel injection device (30) includes a pump housing case (31), a fuel injection pump (32), and a mechanical governor (29).

ポンプ収容ケース(３１)は、クランクケース(図外)の幅方向を横方向として、クランクケースの横側にクランクケースと一体鋳造で形成され、上壁(３３)にポンプ差し込み口(３４)を備え、ポンプ差し込み口(３４)の開口周縁部にポンプ取り付け座(３５)が設けられている。   The pump housing case (31) is formed by integrally casting the crankcase on the lateral side of the crankcase with the width direction of the crankcase (not shown) as the lateral direction, and the pump insertion port (34) is formed on the upper wall (33). A pump mounting seat (35) is provided at the peripheral edge of the opening of the pump insertion opening (34).

燃料噴射ポンプ(３２)はボッシュ型のプランジャ式列形ポンプで、ポンプ収容ケース(３１)内にはポンプ差し込み口(３４)から燃料噴射ポンプ(３２)のプランジャ部(３６)が差し込まれ、燃料噴射ポンプ(３２)のフランジ部(３７)がポンプ取り付け座(３５)に取り付けられ、プランジャ部(３６)がポンプ収容ケース(３１)内に収容されている。   The fuel injection pump (32) is a Bosch-type plunger-type row-type pump, and the plunger portion (36) of the fuel injection pump (32) is inserted into the pump housing case (31) from the pump insertion port (34). The flange part (37) of the injection pump (32) is attached to the pump mounting seat (35), and the plunger part (36) is housed in the pump housing case (31).

図２に示すように、メカニカルガバナ(２９)は、ポンプ収容ケース(３１)内に収容され、燃料噴射ポンプ(３２)を調量制御し、負荷変動に拘わらず、エンジン回転数を調速レバー(２８)で設定された目標回転数に維持する。
メカニカルガバナ(２９)は、ガバナスプリング(図外)のバネ力とフライウェイト(図外)のガバナ力との不釣合い力で揺動するガバナレバー(３８)を備え、ガバナレバー(３８)の揺動を介して燃料噴射ポンプ(３２)の燃料調量ラック(３９)が調量される。 As shown in FIG. 2, the mechanical governor (29) is housed in the pump housing case (31), controls the fuel injection pump (32), and controls the engine speed regardless of the load fluctuation. The target rotational speed set in (28) is maintained.
The mechanical governor (29) includes a governor lever (38) that swings by an unbalanced force between the spring force of the governor spring (not shown) and the governor force of the flyweight (not shown), and swings the governor lever (38). The fuel metering rack (39) of the fuel injection pump (32) is metered through.

図２に示すように、ポンプ収容ケース(３１)の上壁(３３)には、燃料制限装置(４０)が設けられている。
この燃料制限装置(４０)では、エンジンの定格回転数での最大燃料噴射量が調節され、エンジンの最大出力が調節される。
燃料制限装置(４０)の調節ボルト(３)は、ボルト取付壁(２)を貫通し、その先端部は、ガバナレバー(３８)の燃料増量揺動側で、ポンプ収容ケース(３１)内に突出し、ガバナレバー(３８)を受け止めて、ガバナレバー(３８)の燃料増量側の揺動位置を制限する。 As shown in FIG. 2, a fuel limiting device (40) is provided on the upper wall (33) of the pump housing case (31).
In this fuel limiting device (40), the maximum fuel injection amount at the rated engine speed is adjusted, and the maximum output of the engine is adjusted.
The adjustment bolt (3) of the fuel limiting device (40) penetrates the bolt mounting wall (2), and its tip protrudes into the pump housing case (31) on the fuel increase swing side of the governor lever (38). The governor lever (38) is received, and the swing position of the governor lever (38) on the fuel increase side is limited.

図１(Ａ)に示すように、燃料制限装置(４０)は、ボルト取付壁(２)と調節ボルト(３)とロックナット(４)とカバー(５)と抜け止め部(６)を備えている。
ボルト取付壁(２)にはメネジ孔(１)が形成されている。
調節ボルト(３)は、メネジ孔(１)にネジ嵌合され、ボルト取付壁(２)に取り付けられている。
ロックナット(４)は、調節ボルト(３)にネジ嵌合されている。
カバー(５)は、ロックナット(４)に回転可能に外嵌されている。
抜け止め部(６)は、カバー(５)を抜け止めする。
図１(Ａ)に示すように、この第１実施形態では、調節ボルト(３)でエンジンの最大出力の燃料噴射量を調節した後は、ロックナット(４)をカバー(５)で覆い、調節ボルト(３)の調節位置の改竄を防止する。 As shown in FIG. 1 (A), the fuel limiting device (40) includes a bolt mounting wall (2), an adjusting bolt (3), a lock nut (4), a cover (5), and a retaining portion (6). ing.
A female screw hole (1) is formed in the bolt mounting wall (2).
The adjusting bolt (3) is screwed into the female screw hole (1) and attached to the bolt mounting wall (2).
The lock nut (4) is screwed to the adjustment bolt (3).
The cover (5) is rotatably fitted on the lock nut (4).
The retaining portion (6) retains the cover (5).
As shown in FIG. 1 (A), in this first embodiment, after adjusting the maximum fuel injection amount of the engine with the adjusting bolt (3), the lock nut (4) is covered with the cover (5), Prevent tampering of the adjustment position of the adjustment bolt (3).

図１(Ａ)に示すように、ボルト取付壁(２)は、ポンプ収容ケース(３１)の上壁(３３)である。
調節ボルト(３)のポンプ収容ケース(３１)側の端を先端として、調節ボルト(３)は、先端にガバナレバー(３８)を受け止めるレバー受止部(４１)を備え、基端に工具を係合する工具係合部(１８)を備えている。
レバー受止部(４１)は半球形で、工具係合部(１８)は六角孔で構成されている。調節ボルト(３)は、工具係合部(１８)に係合される特殊な工具を用いてメネジ孔(１)で進退調節され、調節ボルト(３)に締結したロックナット(４)の締結力で、ボルト取付壁(２)に緩み止め状態で固定される。
ロックナット(４)は、六角ナットで、調節ボルト(３)との締結力で、第１ガスケット(４２)を介してボルト取付壁(２)に押圧固定されている。 As shown in FIG. 1A, the bolt mounting wall (2) is the upper wall (33) of the pump housing case (31).
With the end of the adjustment bolt (3) on the pump housing case (31) side as the tip, the adjustment bolt (3) has a lever receiving portion (41) for receiving the governor lever (38) at the tip, and engages the tool at the base end. A tool engaging portion (18) is provided.
The lever receiving portion (41) is hemispherical, and the tool engaging portion (18) is a hexagonal hole. The adjustment bolt (3) is advanced and retracted in the female screw hole (1) using a special tool engaged with the tool engaging portion (18), and the lock nut (4) is fastened to the adjustment bolt (3). By force, it is fixed to the bolt mounting wall (2) in a locking state.
The lock nut (4) is a hexagon nut, and is pressed and fixed to the bolt mounting wall (2) via the first gasket (42) with a fastening force with the adjustment bolt (3).

図１(Ａ)に示すように、カバー(５)は、キャップ形である。
燃料制限装置(４０)は、更に、袋ナット(１９)を備え、袋ナット(１９)で調節ボルト(３)の工具係合部(１８)を覆っている。
袋ナット(１９)は、六角ナットで、調節ボルト(３)にネジ嵌合され、調節ボルト(３)との締結力で、第２ガスケット(４３)を介してロックナット(４)に押圧固定されている。
ボルト取付壁(２)は鋳鉄、調節ボルト(３)とロックナット(４)とカバー(５)は鋼、第１ガスケット(４２)と第２ガスケット(４３)は銅を素材としている。
カバー(５)がキャップ状で、カバー(５)で調節ボルト(３)の工具係合部(１８)へのアクセスを制限できる場合には、必ずしも袋ナット(１９)は用いなくてもよい。
一方、袋ナット(１９)を用いた場合には、カバー(５)は必ずしもキャップ形である必要はなく、周壁(５ａ)のみからなる筒状のものであってもよい。 As shown in FIG. 1A, the cover (5) has a cap shape.
The fuel limiting device (40) further includes a cap nut (19), and the cap nut (19) covers the tool engaging portion (18) of the adjustment bolt (3).
The cap nut (19) is a hexagonal nut that is screw-fitted to the adjustment bolt (3), and is pressed and fixed to the lock nut (4) via the second gasket (43) by the fastening force with the adjustment bolt (3). Has been.
The bolt mounting wall (2) is made of cast iron, the adjusting bolt (3), the lock nut (4) and the cover (5) are made of steel, and the first gasket (42) and the second gasket (43) are made of copper.
When the cover (5) has a cap shape and the access to the tool engaging portion (18) of the adjusting bolt (3) can be restricted by the cover (5), the cap nut (19) is not necessarily used.
On the other hand, when the cap nut (19) is used, the cover (5) does not necessarily have a cap shape, and may be a cylinder having only the peripheral wall (5a).

図１(Ａ)に示すように、抜け止め部(６)は、カラー(７)とカラー係止部(８)を備えている。
カラー(７)は、カバー(５)の周壁(５ａ)に締まり嵌めで内嵌されている。
カラー係止部(８)は調節ボルト(３)に支持されている。
ボルト取付壁(２)から離れる向きにロックナット(４)及び袋ナット(１９)から抜き取られようとするカバー(５)が、カラー(７)を介してカラー係止部(８)に係止されるように構成されている。 As shown in FIG. 1A, the retaining portion (6) includes a collar (7) and a collar locking portion (8).
The collar (7) is fitted into the peripheral wall (5a) of the cover (5) with an interference fit.
The collar locking portion (8) is supported by the adjustment bolt (3).
The cover (5) to be pulled out from the lock nut (4) and the cap nut (19) in a direction away from the bolt mounting wall (2) is locked to the collar locking portion (8) via the collar (7). It is configured to be.

この第１実施形態では、前記特許文献１の発明とは異なり、カバー(５)の周壁(５ａ)に変形用スリットのような工具差し込み口が形成されないことに加え、カラー(７)の内嵌でカバー(５)の周壁(５ａ)が補強される。これにより、カバー(５)の周壁(５ａ)の変形や破壊が抑制され、カバー(５)の不正な抜き取りを防止することができる。   In the first embodiment, unlike the invention of Patent Document 1, in addition to the fact that a tool insertion hole such as a slit for deformation is not formed on the peripheral wall (5a) of the cover (5), the collar (7) is fitted internally. Thus, the peripheral wall (5a) of the cover (5) is reinforced. Thereby, a deformation | transformation and destruction of the surrounding wall (5a) of a cover (5) are suppressed, and unauthorized removal of a cover (5) can be prevented.

カラー(７)は、円筒形で、鋼を素材としている。
カラー(７)は、カバー(５)の周壁(５ａ)に圧入されることにより、カバー(５)の周壁(５ａ)に締まり嵌めで内嵌される。
カラー係止部(８)は後述の通りロックナット(４)に設けられ、ロックナット(４)を介して調節ボルト(３)に支持されている。 The collar (7) is cylindrical and is made of steel.
The collar (7) is fitted into the peripheral wall (5a) of the cover (5) with an interference fit by being press-fitted into the peripheral wall (5a) of the cover (5).
The collar locking portion (8) is provided on the lock nut (4) as will be described later, and is supported by the adjustment bolt (3) via the lock nut (4).

図１(Ａ)に示すように、ロックナット(４)は、レンチ係合部(９)と小径部(１０)を備えている。
小径部(１０)は、レンチ係合部(９)よりも小径で、レンチ係合部(９)よりもボルト取付壁(２)寄りに配置されている。
カラー(７)は、上記小径部(１０)に回転可能に外嵌され、カバー(５)の周壁(５ａ)の先端開口部(１１)に締まり嵌めで内嵌されている。
カラー係止部(８)は、レンチ係合部(９)の外周面と上記小径部(１０)の外周面の間に形成され、カラー(７)と対向するロックナット(４)の環状面(１２)で構成されている。 As shown in FIG. 1 (A), the lock nut (4) includes a wrench engaging portion (9) and a small diameter portion (10).
The small diameter portion (10) has a smaller diameter than the wrench engaging portion (9) and is disposed closer to the bolt mounting wall (2) than the wrench engaging portion (9).
The collar (7) is rotatably fitted on the small-diameter portion (10), and is fitted on the front end opening (11) of the peripheral wall (5a) of the cover (5) with an interference fit.
The collar locking portion (8) is formed between the outer peripheral surface of the wrench engaging portion (9) and the outer peripheral surface of the small diameter portion (10), and is an annular surface of the lock nut (4) facing the collar (7). (12).

図１(Ａ)に示すように、この第１実施形態では、カラー(７)は、小径部(１０)に回転可能に外嵌され、カバー(５)の周壁(５ａ)の先端開口部(１１)に締まり嵌めで内嵌されているので、カバー(５)の外径を小径にすることができる。
また、カラー(７)は、カバー(５)の周壁(５ａ)の先端開口部(１１)に締まり嵌めで内嵌されているので、カバー(５)の周壁(５ａ)の先端開口部(１１)が補強される。これにより、カバー(５)の周壁(５ａ)の先端開口部(１１)の変形や破壊が抑制され、カバー(５)の不正な抜き取りを防止することができる。 As shown in FIG. 1 (A), in this first embodiment, the collar (7) is rotatably fitted around the small diameter portion (10), and the front end opening portion (5a) of the peripheral wall (5a) of the cover (5) ( 11), the outer diameter of the cover (5) can be reduced.
Further, since the collar (7) is fitted into the front end opening (11) of the peripheral wall (5a) of the cover (5) by an interference fit, the front end opening (11) of the peripheral wall (5a) of the cover (5). ) Is reinforced. Thereby, deformation | transformation and destruction of the front-end | tip opening part (11) of the surrounding wall (5a) of a cover (5) are suppressed, and unauthorized removal of a cover (5) can be prevented.

図１(Ａ)に示すように、小径部(１０)は円筒形である。
カラー(７)をカバー(５)の周壁(５ａ)の開口部(１１)に締まり嵌めで内嵌するには、ロックナット(４)の小径部(１０)にカラー(７)を外嵌した状態で、袋ナット(１９)にカバー(５)を外嵌し、カバー(５)の周壁(５ａ)の開口部(１１)を、カラー(７)の外周に圧入すればよい。
第２ガスケット(４２)はロックナット(４)の小径部(１０)とボルト取付壁(２)の間、及びカラー(７)とボルト取付壁(２)の間に挟まれている。 As shown in FIG. 1 (A), the small diameter portion (10) is cylindrical.
In order to fit the collar (7) into the opening (11) of the peripheral wall (5a) of the cover (5) with an interference fit, the collar (7) is fitted on the small diameter part (10) of the lock nut (4). In this state, the cover (5) is externally fitted to the cap nut (19), and the opening (11) of the peripheral wall (5a) of the cover (5) may be press-fitted into the outer periphery of the collar (7).
The second gasket (42) is sandwiched between the small diameter portion (10) of the lock nut (4) and the bolt mounting wall (2) and between the collar (7) and the bolt mounting wall (2).

図１(Ａ)に示すように、カバー(５)のボルト取付壁(２)側の端を先端として、カバー(５)の周壁(５ａ)の先端開口縁(１３)は、ボルト取付壁(２)に当接されている。
このため、カバー(５)の周壁(５ａ)の先端開口縁(１３)とボルト取付壁(２)の間にマイナスドライバー等の工具を差し込まれる隙間が形成されず、カバー(５)の周壁(５ａ)の先端開口縁(１３)の変形や破壊が抑制され、カバー(５)の不正な抜き取りを防止することができる。 As shown in FIG. 1 (A), with the end of the cover (5) on the bolt mounting wall (2) side as the tip, the tip opening edge (13) of the peripheral wall (5a) of the cover (5) is a bolt mounting wall ( 2).
For this reason, a gap for inserting a tool such as a flathead screwdriver is not formed between the tip opening edge (13) of the peripheral wall (5a) of the cover (5) and the bolt mounting wall (2), and the peripheral wall of the cover (5) ( Deformation and destruction of the tip opening edge (13) of 5a) are suppressed, and unauthorized removal of the cover (5) can be prevented.

図１(Ｅ)はロックナット(４)の変形例を示す。
この変形例では、ロックナット(４)のレンチ係合部(９)は、レンチ係合面(１６)と、隣り合うレンチ係合面(１６)(１６)の境界に形成された面取り部(１７)を備えている。
このため、この変形例では、面取り部(１７)の除肉の分だけ、カバー(５)の内径を小さくでき、その分だけカバー(５)の周壁(５ａ)の肉厚を増加させ、その剛性を高めることができる。これにより、カバー(５)の周壁(５ａ)の変形や破壊が抑制され、カバー(５)の不正な抜き取りを防止することができる。
なお、ロックナット(４)と袋ナット(１９)を併用し、ロックナット(４)の上記変形例を用いる場合には、袋ナット(１９)も同様の構造の変形例を用いる。 FIG. 1 (E) shows a modification of the lock nut (4).
In this modified example, the wrench engaging part (9) of the lock nut (4) is a chamfered part (16) formed at the boundary between the wrench engaging surface (16) and the adjacent wrench engaging surfaces (16) (16). 17).
For this reason, in this modification, the inner diameter of the cover (5) can be reduced by the thickness of the chamfered portion (17), and the thickness of the peripheral wall (5a) of the cover (5) is increased by that amount. Stiffness can be increased. Thereby, a deformation | transformation and destruction of the surrounding wall (5a) of a cover (5) are suppressed, and unauthorized removal of a cover (5) can be prevented.
When the lock nut (4) and the cap nut (19) are used in combination, and the above-described modification of the lock nut (4) is used, the cap nut (19) is also used in a similar structure.

図１(Ａ)に示すように、カバー(５)の周壁(５ａ)のボルト取付壁(２)から離れた側の端を基端として、カバー(５)の周壁(５ａ)の基端に端壁(２６)を備えている。
このため、カバー(５)の周壁(５ａ)の基端部が端壁(２６)で補強され、その基端部の変形や破壊が抑制され、カバー(５)の不正な抜き取りを防止することができる。 As shown in FIG. 1 (A), the end of the peripheral wall (5a) of the cover (5) on the side away from the bolt mounting wall (2) is the base end, and the base end of the peripheral wall (5a) of the cover (5) is An end wall (26) is provided.
For this reason, the base end part of the peripheral wall (5a) of the cover (5) is reinforced by the end wall (26), the deformation and destruction of the base end part are suppressed, and unauthorized removal of the cover (5) is prevented. Can do.

図１(Ａ)に示すように、端壁(２６)は、貫通孔(２７)を備えている。
このため、貫通孔(２)を介してカバー(５)内の通気性が確保される。また、カバー(５)に防錆メッキを施すために、カバー(５)をメッキ液に浸漬した場合に、貫通孔(２７)による空気抜きで、カバー(５)の内面にもメッキを容易に施すことができる。これらの理由により、カバー(５)内の防錆を図ることができる。 As shown in FIG. 1A, the end wall (26) has a through hole (27).
For this reason, the air permeability in the cover (5) is ensured through the through hole (2). In addition, when the cover (5) is immersed in a plating solution in order to apply rust-proof plating to the cover (5), the inner surface of the cover (5) can be easily plated by venting air through the through hole (27). be able to. For these reasons, rust prevention in the cover (5) can be achieved.

次に、第２実施形態について説明する。
第２実施形態は、次の点が第１実施形態と異なる。
クランク軸(図外)の架設方向を前後方向とし、フライホイール(図外)の配置された側を後、反対側を前とする。
図４に示すように、メカニカルガバナ(２９)はポンプ収容ケース(３１)の前部に配置された調時伝動ケース(４４)内に収容され、燃料制限装置(４０)は調時伝動ケース(４４)の前壁(４５)に設けられている。
燃料制限装置(４０)の調節ボルト(３)の先端は、調時伝動ケース(４４)内に突出し、調時伝動ケース(４４)の前壁(４５)がボルト取付壁(２)とされている。 Next, a second embodiment will be described.
The second embodiment differs from the first embodiment in the following points.
The installation direction of the crankshaft (not shown) is the front-rear direction, the side on which the flywheel (not shown) is arranged is the rear, and the opposite side is the front.
As shown in FIG. 4, the mechanical governor (29) is housed in a timing transmission case (44) disposed in the front portion of the pump housing case (31), and the fuel limiting device (40) is coupled to the timing transmission case ( 44) on the front wall (45).
The tip of the adjustment bolt (3) of the fuel limiting device (40) protrudes into the timing transmission case (44), and the front wall (45) of the timing transmission case (44) serves as a bolt mounting wall (2). Yes.

図３(Ａ)に示すように、カラー(７)は、その径方向外向きに突出したフランジ(１４)を備え、カバー(５)の周壁(５ａ)のボルト取付壁(２)側の端を先端として、カバー(５)の周壁(５ａ)の先端開口縁(１３)は、フランジ(１４)に当接されている。
このため、カバー(５)の周壁(５ａ)の先端開口縁(１３)とフランジ(１４)の間にマイナスドライバー等の工具を差し込まれる隙間が形成されず、カバー(５)の周壁(５ａ)の先端開口縁(１３)の変形や破壊が抑制され、カバー(５)の不正な抜き取りを防止することができる。 As shown in FIG. 3 (A), the collar (7) has a flange (14) protruding outward in the radial direction, and an end of the peripheral wall (5a) of the cover (5) on the bolt mounting wall (2) side. The tip opening edge (13) of the peripheral wall (5a) of the cover (5) is in contact with the flange (14).
For this reason, a gap into which a tool such as a screwdriver is inserted is not formed between the tip opening edge (13) of the peripheral wall (5a) of the cover (5) and the flange (14), and the peripheral wall (5a) of the cover (5). The tip opening edge (13) is prevented from being deformed or broken, and unauthorized removal of the cover (5) can be prevented.

図３(Ａ)に示すように、カラー(７)は、フランジ(１４)からボルト取付壁(２)に向けて導出されたスペーサ部(１５)を備え、スペーサ部(１５)でフランジ(１４)がボルト取付壁(２)から離間されている。
このため、ボルト取付壁(２)に取り付けられた他の調節ボルト等の周辺部品に対するフランジ(１４)の干渉や接近を回避することができる。 As shown in FIG. 3 (A), the collar (7) includes a spacer portion (15) led out from the flange (14) toward the bolt mounting wall (2), and the flange (14) ) Is spaced from the bolt mounting wall (2).
For this reason, interference and approach of the flange (14) to peripheral parts such as other adjustment bolts attached to the bolt attachment wall (2) can be avoided.

図３(Ａ)に示すように、スペーサ部(１５)は円筒形で、ロックナット(４)の小径部(１０)に回転可能に外嵌され、第２ガスケット(４２)は、スペーサ(１５)とボルト取付壁(２)の間、及びロックナット(４)の小径部(１０)とボルト取付壁(２)の間に挟まれている。
第２実施形態の他の構成は、第１実施形態と同じであり、図３(Ａ)〜(Ｆ)及び図４中、第１実施形態と同一の要素には、図１(Ａ)〜(Ｅ)及び図２と同一の符号を付しておく。 As shown in FIG. 3 (A), the spacer portion (15) has a cylindrical shape and is rotatably fitted around the small diameter portion (10) of the lock nut (4). The second gasket (42) ) And the bolt mounting wall (2), and between the small diameter portion (10) of the lock nut (4) and the bolt mounting wall (2).
Other configurations of the second embodiment are the same as those of the first embodiment. In FIGS. 3A to 3F and FIG. 4, the same elements as those of the first embodiment are illustrated in FIGS. The same reference numerals as those in FIG.

次に第３実施形態について説明する。
第３実施形態は、次の点が第１実施形態と異なる。
図５(Ａ)に示すように、第３実施形態では、袋ナット(１９)にカラー係止部(８)が形成されている。
ロックナット(４)は、レンチ係合部(９)と、レンチ係合部(９)よりも小径で、レンチ係合部(９)よりも袋ナット(１９)寄りの小径部(２０)を備えている。
カラー(７)は、上記小径部(２０)に回転可能に外嵌され、カバー(５)の周壁(５ａ)に締まり嵌めで内嵌されている。
カラー係止部(８)は、袋ナット(１９)の開口(２１)の周縁部に形成され、カラー(７)と対向する袋ナット(１９)の環状端面(２２)で構成されている。
この第３実施形態では、カラー(７)は、小径部(２０)に外嵌され、カバー(５)の周壁(５ａ)に締まり嵌めで内嵌されるので、カバー(５)の周壁(５ａ)の外径を小径にすることができる。 Next, a third embodiment will be described.
The third embodiment is different from the first embodiment in the following points.
As shown in FIG. 5A, in the third embodiment, a collar locking portion (8) is formed on the cap nut (19).
The lock nut (4) has a wrench engaging portion (9) and a small diameter portion (20) that is smaller in diameter than the wrench engaging portion (9) and closer to the cap nut (19) than the wrench engaging portion (9). I have.
The collar (7) is rotatably fitted on the small-diameter portion (20), and is fitted on the peripheral wall (5a) of the cover (5) with an interference fit.
The collar locking portion (8) is formed at the peripheral edge portion of the opening (21) of the cap nut (19), and is composed of an annular end surface (22) of the cap nut (19) facing the collar (7).
In the third embodiment, the collar (7) is externally fitted to the small-diameter portion (20) and is fitted into the peripheral wall (5a) of the cover (5) by interference fit, so that the peripheral wall (5a) of the cover (5) is fitted. ) Can be made smaller.

また、図５(Ｆ)に示すように、第３実施形態は、カバー(５)の抜け止め補強部(２３)を備え、抜け止め補強部(２３)は、カバー(５)の周壁(５ａ)の内周面(２４)から突出した突部(２５)と、前記カラー(７)で構成され、ボルト取付壁(２)から離れる向きにロックナット(４)と袋ナット(１９)から抜き取られようとするカバー(５)が、突部(２５)を介してカラー(７)に係止されるように構成されている。
このため、カバー(５)の抜け止め補強部(２３)でカバー(５)の抜け止めを補強することができる。 Further, as shown in FIG. 5 (F), the third embodiment includes a retaining reinforcing portion (23) of the cover (5), and the retaining reinforcing portion (23) is a peripheral wall (5a) of the cover (5). ) Projecting from the inner peripheral surface (24) and the collar (7) and extracted from the lock nut (4) and the cap nut (19) in a direction away from the bolt mounting wall (2). The cover (5) to be applied is configured to be locked to the collar (7) through the protrusion (25).
For this reason, the retaining prevention part (23) of the cover (5) can reinforce the retaining of the cover (5).

突部(２５)は、断面半円形の突条で、カバー(５)の周壁(５ａ)の内周面(２４)に周設されている。
突部(２５)を介してカバー(５)をカラー(７)に係止するには、カバー(５)をカラー(７)に取り付けるだけでよく、ロックナット(４)の小径部(１０)にカラー(７)を外嵌した状態で、袋ナット(１９)にカバー(５)を外嵌し、カバー(５)の周壁(５ａ)の先端開口部(１１)を、カラー(７)の外周に圧入すれば、突部(２５)は、カラー(７)の外周を乗り越えて、カラー(７)に係止される。
図５(Ｇ)は、突部(２５)の変形例を示す。
この変形例では、突部(２５)は先端方向に窄まる三角形の断面楔形に形成され、カラー(７)の外周を乗り越え易く、カラー(７)に強固に係止される。
第３実施形態の他の構成は、第１実施形態と同じであり、図５(Ａ)〜(Ｆ)中、第１実施形態と同一の要素には、図１(Ａ)〜(Ｅ)及び図２と同一の符号を付しておく。 The protrusion (25) is a protrusion having a semicircular cross section, and is provided around the inner peripheral surface (24) of the peripheral wall (5a) of the cover (5).
In order to lock the cover (5) to the collar (7) via the protrusion (25), it is only necessary to attach the cover (5) to the collar (7), and the small diameter portion (10) of the lock nut (4). With the collar (7) fitted on the cover, the cover (5) is fitted on the cap nut (19), and the tip opening (11) of the peripheral wall (5a) of the cover (5) is inserted into the collar (7). If it press-fits to the outer periphery, the protrusion (25) gets over the outer periphery of the collar (7) and is locked to the collar (7).
FIG. 5G shows a modification of the protrusion (25).
In this modification, the protrusion (25) is formed in a triangular cross-sectional wedge shape that narrows in the direction of the tip, can easily get over the outer periphery of the collar (7), and is firmly locked to the collar (7).
Other configurations of the third embodiment are the same as those of the first embodiment, and in FIGS. 5A to 5F, the same elements as those of the first embodiment are shown in FIGS. 1A to 1E. The same reference numerals as those in FIG.

本発明の各実施形態の内容は以上の通りであるが、本発明は上記各実施例のように、調節ボルトで燃料噴射ポンプの燃料噴射量を調節する燃料調節ボルト付きディーゼルエンジンに限定されるものではない。
例えば、調節ボルトで油圧ポンプのオイル吐出量を調節する油量調節ボルト付き油圧ポンプ等、各種の調節ボルト付き油圧機器や調節ボルト付きエンジンに用いることもできる。 The contents of each embodiment of the present invention are as described above. However, the present invention is limited to a diesel engine with a fuel adjustment bolt that adjusts the fuel injection amount of the fuel injection pump with the adjustment bolt as in each of the above embodiments. It is not a thing.
For example, it can also be used for various hydraulic devices with adjusting bolts and engines with adjusting bolts, such as a hydraulic pump with an oil amount adjusting bolt that adjusts the oil discharge amount of the hydraulic pump with the adjusting bolt.

(１) メネジ孔
(２) ボルト取付壁
(３) 調節ボルト
(４) ロックナット
(５) カバー
(５ａ) 周壁
(６) 抜け止め部
(７) カラー
(８) カラー係止部
(９) レンチ係合部
(１０) 小径部
(１１) 先端開口部
(１２) 環状面
(１３) 先端開口縁
(１４) フランジ
(１５) スペーサ部
(１６) レンチ係合面
(１７) 面取り部
(１８) 工具係合部
(１９) 袋ナット
(２０) 小径部
(２１) 開口
(２２) 環状端面
(２３) 抜け止め補強部
(２４) 内周面
(２５) 突部
(２６) 端壁
(２７) 貫通孔 (1) Female thread hole
(2) Bolt mounting wall
(3) Adjustment bolt
(4) Lock nut
(5) Cover
(5a) Perimeter wall
(6) Retaining part
(7) Color
(8) Collar locking part
(9) Wrench engaging part
(10) Small diameter part
(11) Tip opening
(12) Annular surface
(13) Tip opening edge
(14) Flange
(15) Spacer
(16) Wrench engagement surface
(17) Chamfer
(18) Tool engaging part
(19) Cap nut
(20) Small diameter part
(21) Opening
(22) Annular end face
(23) Retaining prevention part
(24) Inner surface
(25) Protrusion
(26) End wall
(27) Through hole

Claims (10)

メネジ孔(１)が形成されたボルト取付壁(２)と、
メネジ孔(１)にネジ嵌合され、ボルト取付壁(２)に取り付けられた調節ボルト(３)と、
調節ボルト(３)にネジ嵌合されたロックナット(４)と、
ロックナット(４)に回転可能に外嵌されたカバー(５)と、
カバー(５)を抜け止めする抜け止め部(６)を備えた、調節ボルト付き機器において、
抜け止め部(６)は、
カバー(５)の周壁(５ａ)に締まり嵌めで内嵌されたカラー(７)と、
調節ボルト(３)に支持されたカラー係止部(８)を備え、
ボルト取付壁(２)から離れる向きにロックナット(４)から抜き取られようとするカバー(５)が、カラー(７)を介してカラー係止部(８)に係止されるように構成されている、ことを特徴とする調節ボルト付き機器。 A bolt mounting wall (2) in which a female screw hole (1) is formed;
An adjustment bolt (3) screwed into the female screw hole (1) and attached to the bolt mounting wall (2);
A lock nut (4) screwed to the adjustment bolt (3);
A cover (5) rotatably fitted on the lock nut (4);
In a device with an adjustment bolt, provided with a retaining part (6) for retaining the cover (5),
The retaining part (6)
A collar (7) fitted inside the peripheral wall (5a) of the cover (5) with an interference fit;
A collar locking part (8) supported by the adjustment bolt (3);
The cover (5) to be removed from the lock nut (4) in a direction away from the bolt mounting wall (2) is configured to be locked to the collar locking portion (8) via the collar (7). A device with an adjusting bolt, characterized by that. 請求項１に記載された調節ボルト付き機器において、
ロックナット(４)は、
レンチ係合部(９)と、
レンチ係合部(９)よりも小径で、レンチ係合部(９)よりもボルト取付壁(２)寄りの小径部(１０)を備え、
カバー(５)の周壁(５ａ)のボルト取付壁(２)側の端を先端として、
カラー(７)は、上記小径部(１０)に回転可能に外嵌され、カバー(５)の周壁(５ａ)の先端開口部(１１)に締まり嵌めで内嵌され、
カラー係止部(８)は、レンチ係合部(９)の外周面と上記小径部(１０)の外周面の間に形成され、カラー(７)と対向するロックナット(４)の環状面(１２)で構成されている、ことを特徴とする調節ボルト付き機器。 In the apparatus with an adjustment bolt described in claim 1,
Lock nut (4)
A wrench engaging portion (9);
A smaller diameter portion (10) having a smaller diameter than the wrench engaging portion (9) and closer to the bolt mounting wall (2) than the wrench engaging portion (9);
With the end on the bolt mounting wall (2) side of the peripheral wall (5a) of the cover (5) as the tip,
The collar (7) is rotatably fitted on the small-diameter portion (10), and is fitted on the front end opening (11) of the peripheral wall (5a) of the cover (5) with an interference fit.
The collar locking portion (8) is formed between the outer peripheral surface of the wrench engaging portion (9) and the outer peripheral surface of the small diameter portion (10), and is an annular surface of the lock nut (4) facing the collar (7). (12) It is comprised, The apparatus with an adjustment bolt characterized by the above-mentioned. 請求項１または請求項２に記載された調節ボルト付き機器において、
カバー(５)の周壁(５ａ)のボルト取付壁(２)側の端を先端として、
カバー(５)の周壁(５ａ)の先端開口縁(１３)は、ボルト取付壁(２)に当接されている、ことを特徴とする調節ボルト付き機器。 In the apparatus with an adjustment bolt described in claim 1 or 2,
With the end on the bolt mounting wall (2) side of the peripheral wall (5a) of the cover (5) as the tip,
A device with an adjusting bolt, characterized in that the tip opening edge (13) of the peripheral wall (5a) of the cover (5) is in contact with the bolt mounting wall (2). 請求項１または請求項２に記載された調節ボルト付き機器において、
カラー(７)は、その径方向外向きに突出したフランジ(１４)を備え、
カバー(５)の周壁(５ａ)のボルト取付壁(２)側の端を先端として、
カバー(５)の周壁(５ａ)の先端開口縁(１３)は、フランジ(１４)に当接されている、ことを特徴とする調節ボルト付き機器。 In the apparatus with an adjustment bolt described in claim 1 or 2,
The collar (7) includes a flange (14) projecting radially outward thereof,
With the end on the bolt mounting wall (2) side of the peripheral wall (5a) of the cover (5) as the tip,
A device with an adjusting bolt, characterized in that the tip opening edge (13) of the peripheral wall (5a) of the cover (5) is in contact with the flange (14). 請求項４に記載された調節ボルト付き機器において、
カラー(７)は、フランジ(１４)からボルト取付壁(２)に向けて導出されたスペーサ部(１５)を備え、スペーサ部(１５)でフランジ(１４)がボルト取付壁(２)から離間されている、ことを特徴とする調節ボルト付き機器。 In the apparatus with an adjustment bolt described in claim 4,
The collar (7) includes a spacer portion (15) led out from the flange (14) toward the bolt mounting wall (2), and the flange (14) is separated from the bolt mounting wall (2) by the spacer portion (15). A device with an adjusting bolt, characterized in that 請求項１から請求項５のいずれかに記載された調節ボルト付き機器において、
ロックナット(４)のレンチ係合部(９)は、
レンチ係合面(１６)と、
隣り合うレンチ係合面(１６)(１６)の境界に形成された面取り部(１７)を備えている、ことを特徴とする調節ボルト付き機器。 In the apparatus with an adjustment bolt in any one of Claims 1-5,
The wrench engaging part (9) of the lock nut (4)
A wrench engaging surface (16);
A device with an adjusting bolt, comprising a chamfered portion (17) formed at a boundary between adjacent wrench engaging surfaces (16) and (16). 請求項１に記載された調節ボルト付き機器において、
調節ボルト(３)にネジ嵌合され、調節ボルト(３)の工具係合部(１８)を覆う袋ナット(１９)を備え、
カバー(５)はロックナット(４)と袋ナット(１９)に回転可能に外嵌され、
ロックナット(４)は、
レンチ係合部(９)と、
レンチ係合部(９)よりも小径で、レンチ係合部(９)よりも袋ナット(１９)寄りの小径部(２０)を備え、
カラー(７)は、上記小径部(２０)に回転可能に外嵌され、カバー(５)の周壁(５ａ)に締まり嵌めで内嵌され、
カラー係止部(８)は、袋ナット(１９)の開口(２１)の周縁部に形成され、カラー(７)と対向する袋ナット(１９)の環状端面(２２)で構成されている、ことを特徴とする調節ボルト付き機器。 In the apparatus with an adjustment bolt described in claim 1,
A cap nut (19) is provided which is screwed to the adjustment bolt (3) and covers the tool engaging portion (18) of the adjustment bolt (3).
The cover (5) is rotatably fitted on the lock nut (4) and the cap nut (19),
Lock nut (4)
A wrench engaging portion (9);
A smaller diameter portion (20) having a smaller diameter than the wrench engaging portion (9) and closer to the cap nut (19) than the wrench engaging portion (9);
The collar (7) is rotatably fitted to the small-diameter portion (20) and is fitted to the peripheral wall (5a) of the cover (5) with an interference fit.
The collar locking portion (8) is formed at the peripheral edge portion of the opening (21) of the cap nut (19), and is composed of an annular end surface (22) of the cap nut (19) facing the collar (7). A device with adjusting bolts. 請求項７に記載された調節ボルト付き機器において、
カバー(５)の抜け止め補強部(２３)を備え、
抜け止め補強部(２３)は、
カバー(５)の周壁(５ａ)の内周面(２４)から突出した突部(２５)と、
前記カラー(７)で構成され、
ボルト取付壁(２)から離れる向きにロックナット(４)と袋ナット(１９)から抜き取られようとするカバー(５)が、突部(２５)を介してカラー(７)に係止されるように構成されている、ことを特徴とする調節ボルト付き機器。 In the apparatus with an adjustment bolt described in claim 7,
The cover (5) is provided with a retaining reinforcement (23),
The retaining reinforcement (23)
A protrusion (25) protruding from the inner peripheral surface (24) of the peripheral wall (5a) of the cover (5);
Consists of the color (7),
A cover (5) to be removed from the lock nut (4) and the cap nut (19) in a direction away from the bolt mounting wall (2) is locked to the collar (7) through the protrusion (25). It is comprised as follows, The apparatus with an adjustment bolt characterized by the above-mentioned. 請求項１から請求項８のいずれかに記載された調節ボルト付き機器において、
カバー(５)の周壁(５ａ)のボルト取付壁(２)から離れた側の端を基端として、
カバー(５)の周壁(５ａ)の基端に端壁(２６)を備えている、ことを特徴とする調節ボルト付き機器。 In the apparatus with an adjustment bolt in any one of Claims 1-8,
With the end of the cover (5) on the side away from the bolt mounting wall (2) of the peripheral wall (5a) as the base end,
A device with an adjustment bolt, characterized in that an end wall (26) is provided at the proximal end of the peripheral wall (5a) of the cover (5). 請求項９に記載された調節ボルト付き機器において、
端壁(２６)は、貫通孔(２７)を備えている、ことを特徴とする調節ボルト付き機器。 In the apparatus with an adjustment bolt described in claim 9,
The end wall (26) includes a through hole (27), and the device with an adjusting bolt is provided.
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CN106917710A (en) 2017-07-04

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