JPS636865Y2

JPS636865Y2 -

Info

Publication number: JPS636865Y2
Application number: JP1915381U
Authority: JP
Priority date: 1981-02-12
Filing date: 1981-02-12
Publication date: 1988-02-26
Also published as: JPS57132392U

Description

【考案の詳細な説明】本考案はボデイにねじ山を形成した受金レスの
ランプソケツトにおいて、ランプの斜め装着によ
る接触不良を解消する目的を有する。DETAILED DESCRIPTION OF THE INVENTION The present invention has an object to eliminate poor contact caused by oblique mounting of a lamp in a holder-less lamp socket having a threaded body.

従来、受金を省いてボデイ自体の内周面にねじ
山を形成したランプソケツトは公知であるが、成
形性を考慮して一条のねじ山を対向して設けるこ
とが多い。この場合、ランプをソケツト内に螺合
して行く際、ランプの口金がねじ山に沿わせにく
く誤つて斜めに装着されることがよくあり、接触
不良を発生することがあつた。 Conventionally, lamp sockets in which a holder is omitted and threads are formed on the inner circumferential surface of the body itself are known, but in consideration of moldability, single threads are often provided facing each other. In this case, when the lamp is screwed into the socket, the lamp base is often difficult to align with the screw thread and is often incorrectly installed at an angle, resulting in poor contact.

本考案は上記欠点を解消できる考案に係り、以
下、一実施例にもとづいて図面を参照して説明す
る。 The present invention is directed to a device that can overcome the above-mentioned drawbacks, and will be described below based on one embodiment with reference to the drawings.

１は合成樹脂材料で成形したランプソケツト
で、その内周面には対向した箇所に一条のねじ山
２，２′を各々分離して形成している。そして、
ねじ山２，２′の高さは相異しており、ねじ山
２′はねじ山２より低く形成する。実施した例で
はねじ山２の高さh₁は0.685mm、ねじ山２′の高さ
h₂は0.25mmである。また、ねじ山２，２′の幅は
いづれも1.9mmで、かつ約14mmの円弧長さで形成
した。また、ソケツト１の開口部３内径は19mmで
ある。４はソケツト１の底面部であり、その両側
には孔５，５′が形成され、これらの孔５，５′は
ねじ山２，２′の下方に位置し、ねじ山２，２′を
形成する場合の金型挿入孔になる。すなわち、ね
じ山２，２′はソケツト１の開口部３側から挿入
する金型（図示せず）とで成形される。６はソケ
ツト１の裏蓋であり、孔５，５′に挿入しつつソ
ケツト１の裏面を覆うものである。そして、この
裏蓋６には中心接片７と側部接片８が装着されて
いる。ランプ９はソケツト１に装着したときに、
その中心接触部１０が中心接片７に接触し、口金
１１が側部接片８に接触するようになる。 Reference numeral 1 designates a lamp socket molded from a synthetic resin material, and has separate threads 2 and 2' formed on its inner peripheral surface at opposing locations. and,
The heights of the threads 2 and 2' are different, and the thread 2' is formed lower than the thread 2. In the implemented example, the height _h1 of thread 2 is 0.685 mm, and the height of thread 2' is 0.685 mm.
_h2 is 0.25mm. Further, the width of the threads 2 and 2' was 1.9 mm, and the arc length was about 14 mm. Further, the inner diameter of the opening 3 of the socket 1 is 19 mm. Reference numeral 4 designates the bottom surface of the socket 1, and holes 5 and 5' are formed on both sides of the socket 1, and these holes 5 and 5' are located below the threads 2 and 2'. It becomes the mold insertion hole when forming. That is, the threads 2, 2' are formed by a mold (not shown) inserted from the opening 3 side of the socket 1. Reference numeral 6 denotes a back cover of the socket 1, which covers the back surface of the socket 1 while being inserted into the holes 5 and 5'. A center contact piece 7 and a side contact piece 8 are attached to the back cover 6. When lamp 9 is attached to socket 1,
The center contact portion 10 comes into contact with the center contact piece 7, and the base 11 comes into contact with the side contact piece 8.

以上のように構成することにより、本考案はラ
ンプ９のソケツト１に対する斜め装着を防止でき
る効果がある。すなわち、もしランプ９の口金１
１がねじ山２，２′に条違いに螺合するようにな
つても、口金１１の進入にともない無理な力が作
用するため、口金１１はねじ山２あるいは２′を
のりこえてすべり落ち、最もねじ込んだ状態では
第３図のごとく、正常に装着できるようになる。
なお、ねじ山２，２′双方ともわずかずつ低くし
て同じ高さに形成すると、口金１１の保持力が弱
くなり、がたつきを生じて接触不良になる恐れが
ある。 By configuring as described above, the present invention has the effect of preventing the lamp 9 from being mounted diagonally to the socket 1. That is, if the base 1 of the lamp 9
1 is screwed onto the screw threads 2 and 2' in the opposite direction, but as the cap 11 enters, an unreasonable force is applied, so the cap 11 slips over the threads 2 and 2'. When it is fully screwed in, it can be installed normally as shown in Figure 3.
Note that if both the threads 2 and 2' are made slightly lower and formed at the same height, the holding force of the cap 11 will be weakened, and there is a risk of looseness and poor contact.

[Brief explanation of the drawing]

第１図は本考案のランプソケツトの平面図、第
２図はこのランプソケツトにランプを装着した状
態の斜視図、第３図はその縦断面図である。１……ランプソケツト、２，２′……ねじ山。 FIG. 1 is a plan view of the lamp socket of the present invention, FIG. 2 is a perspective view of the lamp socket with a lamp attached thereto, and FIG. 3 is a longitudinal sectional view thereof. 1... Lamp socket, 2, 2'... Screw thread.

Claims

[Scope of utility model registration request]

1. A lamp socket having separate threads formed at opposing locations on an inner circumferential surface, the lamp socket having different heights of the threads.