JPH034138Y2

JPH034138Y2 -

Info

Publication number: JPH034138Y2
Application number: JP1983109666U
Authority: JP
Priority date: 1983-07-13
Filing date: 1983-07-13
Publication date: 1991-02-01
Also published as: JPS6018653U

Description

【考案の詳細な説明】この考案は、スタータの水抜穴カバーの改良に
関するものである。[Detailed description of the invention] This invention relates to an improvement of a drain hole cover of a starter.

従来、この種のものに実開昭54−61937号に示
すようなものがあつた。以下その関係部分を第１
図に要約して説明する。第１図において、１はス
タータに装着される直流電動機のリヤカバー、２
はこのリヤカバーの貫通孔３に装着される水抜管
であり、Ｌ型の通路４が構成される。なお上記リ
ヤカバー１は図示しないスルーボルトによつて前
部機枠（図示せず）に螺着される。 Conventionally, there was a device of this type as shown in Utility Model Application Publication No. 54-61937. Below is the related part in the first part.
This is summarized and explained in the figure. In Fig. 1, 1 is the rear cover of the DC motor attached to the starter, 2
A drain pipe is attached to the through hole 3 of this rear cover, and an L-shaped passage 4 is formed. The rear cover 1 is screwed onto a front machine frame (not shown) using through bolts (not shown).

従来装置は以上のように構成されているが、装
置の構成が複雑かつ高価になる等の欠点があつ
た。この考案は、上述の様な従来のものの欠点を
解消する為になされたもので、スルーボルトが係
着されるステーで水抜穴をラビリンスシールする
ことにより、以下に述べる優れた効果を有したも
のを提供する事を目的としている。 Although the conventional apparatus is constructed as described above, it has drawbacks such as the complicated and expensive structure of the apparatus. This idea was made in order to eliminate the drawbacks of the conventional ones as mentioned above, and by labyrinth sealing the drain hole with the stay to which the through bolt is attached, it has the excellent effects described below. It is intended to provide.

以下、この考案の一実施例を図について説明す
る。まず第２図において、５はリヤカバー集合体
であり、軟鋼板部材を使用しプレス加工によつて
製造されたリヤカバー６と、このカバーの上下部
に溶着され軟鋼板部材のプレス加工で製造される
ステー７及び８で構成される。９はリヤカバー６
に設けられた水抜穴、１０はブラシホルダを螺着
するネジ挿入孔である。１１は下部のステー８と
一体的に連設されたカバー部であり、上記水抜穴
９の外周面を覆う如く配設され、ラビリンスシー
ル機構を構成している。 An embodiment of this invention will be described below with reference to the drawings. First, in FIG. 2, reference numeral 5 denotes a rear cover assembly, which includes a rear cover 6 manufactured by press working using a mild steel plate member, and a rear cover 6 which is welded to the upper and lower parts of this cover and manufactured by pressing the mild steel plate member. It is composed of stays 7 and 8. 9 is rear cover 6
10 is a screw insertion hole into which a brush holder is screwed. Reference numeral 11 denotes a cover part integrally connected to the lower stay 8, and is disposed so as to cover the outer circumferential surface of the drain hole 9, forming a labyrinth seal mechanism.

なお第２図に示したリヤカバー集合体５は第８
図に示す如く装着される。即ち１２はスタータの
前部機枠（図示せず）にスルーボルト１３，１３
によつて螺着される直流電動機で、このときスル
ーボルトはステー７，８の孔７ａ，８ａに通され
る。１４は平座金、１５はバネ座金、１６は固定
子、１７は継鉄、１８はポール、１９は電機子で
あり、回転軸２０がリヤカバー６に装着されたボ
ールベアリング２１によつて回転自在に支承され
る。２２はリヤカバー６に螺着されるブラシホル
ダであり、ブラシ２３が電機子１９の整流子２４
に摺接される。２５は電機子鉄心、２６は電機子
コイルである。なおこのような構成の直流電動機
１２の動作については周知であるのでその説明は
省略する。 Note that the rear cover assembly 5 shown in FIG.
Attach as shown in the figure. That is, 12 is a through bolt 13, 13 attached to the front machine frame of the starter (not shown).
At this time, the through bolts are passed through the holes 7a and 8a of the stays 7 and 8. 14 is a flat washer, 15 is a spring washer, 16 is a stator, 17 is a yoke, 18 is a pole, and 19 is an armature, and a rotating shaft 20 is rotatable by a ball bearing 21 attached to the rear cover 6. Supported. A brush holder 22 is screwed onto the rear cover 6, and a brush 23 is connected to a commutator 24 of the armature 19.
It slides into contact with the 25 is an armature core, and 26 is an armature coil. Note that since the operation of the DC motor 12 having such a configuration is well known, a description thereof will be omitted.

このようにすれば、水抜穴９がステー８と一体
に構成されたカバー１１によつてラビリンスシー
ルされ、水抜穴９から直流電動機１２の筐体内へ
の塵埃の侵入が防止される。 In this way, the drain hole 9 is labyrinth-sealed by the cover 11 that is integrated with the stay 8, and dust is prevented from entering the housing of the DC motor 12 from the drain hole 9.

以上の様にこの考案によれば、リヤカバーに形
成された水抜穴を、スルーボルト１３が挿入係着
されるステー８と一体に構成されたカバー部１１
によりラビリンスシール構成としたので、装置の
部品数が少なくなり、低価格なものが簡単な構成
で安価に得られる等の極めて優れた効果を奏す
る。 As described above, according to this invention, the cover part 11 is integrated with the stay 8 into which the through bolt 13 is inserted and engaged.
Since the labyrinth seal structure is adopted, the number of parts of the device is reduced, and a low-priced device can be obtained with a simple structure at a low cost, which is an extremely excellent effect.

[Brief explanation of the drawing]

第１図は従来装置を示す断面図、第２図ａはこ
の考案の一実施例によるリヤカバーの横断面図、
第２図ｂは第２図ａのＢ−Ｂ線断面図、第３図は
第２図装置を装着した直流電動機の要部を示す断
面図である。図中、１，６はリヤカバー、７，８はステー、
９は水抜穴、１１はカバー部、１２は直流電動
機、１３はスルーボルトである。尚、図中同一符
号は同一又は相当部分を示す。 FIG. 1 is a sectional view showing a conventional device, FIG. 2a is a cross sectional view of a rear cover according to an embodiment of the invention,
FIG. 2b is a sectional view taken along the line B--B in FIG. 2a, and FIG. 3 is a sectional view showing the main parts of the DC motor equipped with the device shown in FIG. In the figure, 1 and 6 are rear covers, 7 and 8 are stays,
9 is a drain hole, 11 is a cover portion, 12 is a DC motor, and 13 is a through bolt. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of Claim for Utility Model Registration] (1) In a device in which the rear cover of the DC motor is screwed onto the front machine frame of the starter with through bolts, there are approximately two mountain-shaped portions on the lower part of the outer peripheral surface of the rear cover 6. Fix the formed stay 8,
A starter is constructed by passing a through bolt 13 through the sealing hole 8a on one side, and covering the drain hole 9 with the cover section 11 on the other side. (2) The starter according to claim 1 of the utility model registration claim, wherein the through bolt insertion stay 7 is also fixed to the upper part of the outer peripheral surface of the rear cover.