JP3491847B2 - Latch head - Google Patents
Latch headInfo
- Publication number
- JP3491847B2 JP3491847B2 JP23223094A JP23223094A JP3491847B2 JP 3491847 B2 JP3491847 B2 JP 3491847B2 JP 23223094 A JP23223094 A JP 23223094A JP 23223094 A JP23223094 A JP 23223094A JP 3491847 B2 JP3491847 B2 JP 3491847B2
- Authority
- JP
- Japan
- Prior art keywords
- latch
- frame
- head
- shaft pin
- hole
- 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.)
- Expired - Lifetime
Links
Landscapes
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
- Lock And Its Accessories (AREA)
Description
【発明の詳細な説明】
【0001】
【産業上の利用分野】この発明は錠のラッチに関するも
のであり、詳しくは合成樹脂製の傾斜カム面を有するラ
ッチヘツドに関するものである。
【0002】
【従来の技術】従来、ラッチヘッドは金属製のものが多
いが、傾斜カム面の滑り性のよさや、ドアーの開閉時に
伴うラッチヘッドの当たり音が小さいことなどから、傾
斜カム面を合成樹脂で形成したラッチヘツドも使用され
ている。
【0003】傾斜カム面が合成樹脂で形成されたラッチ
ヘッドの従来例としては、図5および図6に示すよう
に、傾斜カム面51を有する硬質の合成樹脂性のラッチ
本体52と、このラッチ本体52を収納して固定し、且
つラッチ棒53に連結する金属製の枠体54から成るも
のが知られている。
【0004】かかる従来例における前記枠体54は、底
板55の両側縁からそれぞれ起立した側壁56,56
と、この各側壁56,56の後端縁からそれぞれ帯状の
長板が内側に折り曲げられて後壁57,57が形成さ
れ、更にラッチ棒53を挟んで外側に屈曲して延びて一
対の連結片58,58とで構成されている。
【0005】そして、連結片58,58とラッチ棒53
には同軸上に連通する同径の連結孔60が各々穿設され
ていて、この連結孔60に挿通されたロックピン59の
両端縁を叩打してかしめ、枠体54とラッチ棒53とは
連結されて固着されるというものである。
【0006】
【発明が解決しようとする課題】ところで、上述した従
来のラッチヘッドにおいては、枠体54とラッチ棒53
との連結作業の際に、別個にロックピン59を用意し、
一対の連結片58,58の連結孔60とラッチ棒53の
連結孔60を同軸上に合わせてからロックピン59を挿
通し、且つロックピン59の両端縁を連結片58,58
の連結孔60から均等に突出させてからかしめるもの
で、工数が多く作業性がわるかった。
【0007】また、ドアーの開閉時に傾斜カム面51に
かかる力や衝撃はロックピン59の軸周り方向に働くの
で、多数回に亘って使用している間にラッチヘッド61
とラッチ棒53とのロックピン59による連結が緩んで
ロックピン59の軸周りにがたつくことがあった。
【0008】そして、ラッチ棒53に連結用の孔を空け
るので強度が落ちるうえに、ロックピン59の太さも制
限されてラッチ全体の強度が充分ではなかった。
【0009】本発明は、上記の問題に鑑みてなされたも
ので、ラッチヘッドとラッチ棒との連結作業が容易にで
き、且つラッチヘッドとラッチ棒とを強固に連結できる
合成樹脂製の傾斜カム面を有するラッチヘッドを提供す
ることを目的としている。
【0010】
【課題を解決するための手段】本発明に係わるラッチヘ
ッドは、傾斜カム面を有する合成樹脂製のラッチ本体
と、前記ラッチ本体を包囲して固定し、且つラッチ棒に
連結する金属製の枠体からなるラッチヘッドに於いて;
前記枠体は、底板の両側縁からそれぞれ起立した側壁
と、前記側壁の後端縁からそれぞれ内側に折り曲げられ
前記ラッチ棒の先端に一体に形成された軸ピンが嵌装す
る凹所が設けられた補助壁と、前記底板の後端縁から起
立し前記軸ピンが挿通する貫通孔が設けられた後壁とを
有することを特徴としている。
【0011】
【作用】本発明に係わるラッチヘッドにおいては、合成
樹脂製のラッチ本体を収納する枠体は、側壁の後端縁か
らそれぞれ内側に折り曲げられラッチ棒の先端に一体に
形成された軸ピンが嵌装する凹所が設けられた補助壁
と、底板の後端縁から起立し前記軸ピンが挿通する貫通
孔が設けられた後壁とによりラッチ棒との連結部が二重
壁に構成され、且つラッチ棒の先端部に一体に形成され
た軸ピンの先端がかしめられて固着されるので連結部が
堅牢にでき、更にラッチヘッドにかかる力は軸ピン周り
の方向には働かないので、多数回使用されても連結部が
がたつくことがない。
【0012】また、本発明に係わるラッチヘッドは、ラ
ッチ棒に一体的に形成された軸ピンによりラッチ棒と連
結される構造であるので、ラッチ棒にロックピンを挿通
する孔を空けたり、別個にロックピンを用意する必要が
ない。
【0013】
【実施例】以下、本発明の実施例を添付図面を参照しな
がら詳細に説明する。図1乃至図4は、本発明のラッチ
ヘッドの一実施例を示すもので、これらの図において、
符合4は組み上げられたラッチヘッドを示している。
【0014】本実施例のラッチヘッド4は、図1及び図
3に示すように、傾斜カム面1を有する硬質合成樹脂製
のラッチ本体2と、このラッチ本体2を収納して固定
し、且つラッチ棒3に連結する金属製の枠体5から成っ
ている。
【0015】ラッチ本体2は、従来のものと同様にポリ
アミド、ポリアセタール、ポリカーボネートなど剛性と
滑り性を兼ね備えたエンジニアリング合成樹脂材料で縦
断面が略三角形に形成され、長辺の面が僅かに外側に湾
曲形成されて傾斜カム面1となっている。
【0016】また、ラッチ本体2の頂稜部には、後述す
るラッチ本体2を包囲する枠体5にラッチ本体2を固定
する為にかしめ折り曲げられる一対の爪片12,12を
収納する段部13,13が形設されているとともに、ラ
ッチ本体2の底面には、枠体5の底板11に貫設された
透孔14に嵌合して前後方向の抜け止めとなる突起15
が突設されており、更にラッチ本体2の後面には、ラッ
チ棒3の先端に一体に形成された軸ピン16の先端のか
しめ部17を収納する凹所18が刻設されている。
【0017】一方、前記ラッチ2を包囲固定する枠体5
は、図4の展開図に示すように、剛性のある金属板を打
ち抜いて所定形状の原板19を形成し、これを折り曲げ
て形成されている。
【0018】枠体5は、底板11の両側縁からそれぞれ
起立しラッチ本体2を固定する一対の爪片12,12が
上端に一体に設けられた略三角形状を呈する側壁6,6
と、この側壁6,6の後端縁からそれぞれ内側に折り曲
げられラッチ棒3の軸ピン16が嵌装する凹所7,7が
設けられた一対の補助壁8,8と、前記底板11の後端
縁から起立し前記ラッチ棒3の軸ピン16が挿通する貫
通孔9が設けられた後壁10とから構成されている。
【0019】そして、補助壁8,8の端縁に設けられた
一対の凹所7,7が対向して構成される孔状部21と、
前記後壁10の貫通孔9とは、軸ピン16が挿通される
されるように同軸に設けられているとともに、補助壁
8,8と後壁10とは密接して形成されている。尚、符
合20は、軸ピン16上に装着されて枠体5とラッチ棒
3とに介在する座金20である。
【0020】また、前記枠体5に連結される剛性を有す
る金属棒から形成されたラッチ棒3の先端部には、前記
貫通孔9の孔寸法とほぼ同じ外径の太さの軸ピン16が
一体に形成されている。
【0021】以上のように形成された枠体5にラッチ棒
3を連結するときは、最初にラッチ棒3の軸ピン16を
座金20と枠体5の後壁10の貫通孔9に挿通し、軸ピ
ン16の先端を叩打してかしめることにより連結し、強
固に固定する。
【0022】軸ピン16はラッチ棒3の先端に同軸に一
体に形成されるので、かしめ作業に好適な任意の太さに
設定が可能である。従って、適正の太さに設定された軸
ピンはかしめ作業による歪みを生ずることもなく、且つ
枠体5の連結部となる後壁10は二重壁に形成されるの
で、ラッチ棒3と枠体5とは堅牢に一体化される。
【0023】尚、かしめ部17には座金を介在させても
よいが、補助壁8,8が座金の働きもするので別個に座
金を介在させなくとも充分強固に固着できる。
【0024】そして、ラッチヘッド4の組み立ては、ラ
ッチ棒3が連結された枠体5に傾斜カム面1を上に向け
てラッチ本体2をはめ込み、透孔14に突起15を嵌合
させてラッチヘッドの前後方向の抜け止めにするととも
に、爪片12,12をそれぞれ内側に折り込んでかし
め、上下方向の抜け止めにして固定する事により完成す
る。
【0025】
【発明の効果】本発明に係わるラッチヘッドによれば、
ラッチヘッドとラッチ棒との連結部が二重壁に構成され
ているとともに、ラッチ棒の先端部に一体に形成された
軸ピンの先端がかしめられて固着されるので連結部が堅
牢にでき、更にラッチヘッドにかかる力は軸ピン周りの
方向には働かないので多数回使用されても連結部ががた
つくようなことがない。従って、ラッチ全体の強度が向
上する。
【0026】また、本発明に係わるラッチヘッドによれ
ば、ラッチヘッドはラッチ棒の先端に一体的に形成され
た軸ピンにより連結される構造であるので、従来のラッ
チ棒のように、ラッチ棒にロックピンを挿通する孔を空
けたり、別個にロックピンを用意してこれをセットする
作業の必要がない。 従って、ラッチの組立作業が簡単
になり安価に製造できる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch for a lock, and more particularly to a latch head having an inclined cam surface made of synthetic resin. 2. Description of the Related Art Conventionally, latch heads are often made of metal. However, due to the good slipperiness of the inclined cam surface and the low hitting sound of the latch head caused when the door is opened and closed, the latch head is made of metal. Latch heads made of synthetic resin are also used. As a conventional example of a latch head in which the inclined cam surface is formed of synthetic resin, as shown in FIGS. 5 and 6, a hard synthetic resin latch body 52 having an inclined cam surface 51, It is known that the main body 52 is housed and fixed, and includes a metal frame 54 connected to a latch bar 53. The frame 54 in such a conventional example has side walls 56, 56 erected from both side edges of a bottom plate 55.
From the rear edge of each of the side walls 56, 56, a strip-shaped long plate is bent inward to form rear walls 57, 57, and further bent outwardly with the latch rod 53 interposed therebetween to extend and connect. Pieces 58, 58. The connecting pieces 58, 58 and the latch rod 53
Each of the connecting holes 60 having the same diameter communicating with each other coaxially is formed. The both ends of the lock pin 59 inserted into the connecting holes 60 are beaten and caulked so that the frame 54 and the latch rod 53 It is connected and fixed. [0006] In the above-mentioned conventional latch head, the frame 54 and the latch rod 53 are provided.
At the time of the connection work with, the lock pin 59 is prepared separately,
The lock pin 59 is inserted through the connection holes 60 of the pair of connection pieces 58, 58 and the connection holes 60 of the latch bar 53 coaxially, and both ends of the lock pin 59 are connected to the connection pieces 58, 58.
And then crimped after evenly protruding from the connection hole 60, and the number of steps was large and workability was poor. Further, since the force or impact applied to the inclined cam surface 51 when the door is opened and closed acts in the direction around the axis of the lock pin 59, the latch head 61 is used many times.
In some cases, the connection between the lock pin 59 and the latch rod 53 is loosened and the lock pin 59 rattles around the axis. Further, since a connecting hole is formed in the latch rod 53, the strength is reduced, and the thickness of the lock pin 59 is also limited, so that the strength of the entire latch is not sufficient. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an inclined cam made of synthetic resin which can easily connect a latch head and a latch rod and can firmly connect the latch head and the latch rod. It is an object to provide a latch head having a surface. [0010] A latch head according to the present invention comprises a latch body made of synthetic resin having an inclined cam surface, a metal surrounding the latch body, and fixed to the latch bar. The latch head consisting of a frame made of;
The frame body is provided with side walls rising from both side edges of the bottom plate, and recesses into which shaft pins integrally bent from the rear edge of the side walls and formed integrally with the tip of the latch rod are fitted. And a rear wall provided with a through hole that stands up from a rear edge of the bottom plate and through which the shaft pin is inserted. In the latch head according to the present invention, the frame housing the latch body made of synthetic resin is bent inward from the rear end edge of the side wall and formed integrally with the tip of the latch rod. An auxiliary wall provided with a recess in which the pin is fitted, and a rear wall provided with a through-hole which is provided from the rear end edge of the bottom plate and through which the shaft pin is inserted, form a double wall connecting portion with the latch bar. Since the tip of the shaft pin formed integrally with the tip of the latch rod is caulked and fixed, the connecting portion can be made rigid, and the force applied to the latch head does not work in the direction around the shaft pin. Therefore, the connecting portion does not rattle even when used many times. Further, since the latch head according to the present invention has a structure in which the latch pin is connected to the latch rod by a shaft pin formed integrally with the latch rod, a hole for inserting the lock pin into the latch rod may be formed, or a separate hole may be formed. There is no need to provide a lock pin. Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIGS. 1 to 4 show an embodiment of the latch head of the present invention.
Reference numeral 4 indicates the assembled latch head. As shown in FIGS. 1 and 3, the latch head 4 of this embodiment has a latch body 2 made of a hard synthetic resin having an inclined cam surface 1, and the latch body 2 is housed and fixed. It consists of a metal frame 5 connected to the latch bar 3. The latch body 2 is made of an engineering synthetic resin material such as polyamide, polyacetal, and polycarbonate, which has both rigidity and slippery, like a conventional one, and has a substantially triangular longitudinal section, and its long side is slightly outward. The inclined cam surface 1 is formed in a curved shape. A step portion for accommodating a pair of claw pieces 12, 12 which are crimped and bent to fix the latch body 2 to a frame 5 surrounding the latch body 2, which will be described later, is provided on the top ridge of the latch body 2. 13, 13 are formed, and a projection 15 is formed on the bottom surface of the latch body 2 so as to be fitted in a through hole 14 formed through the bottom plate 11 of the frame body 5 to prevent the latch body 2 from falling off in the front-rear direction.
Further, a recess 18 for accommodating a caulked portion 17 at the tip of a shaft pin 16 formed integrally with the tip of the latch rod 3 is formed in the rear surface of the latch body 2. On the other hand, a frame 5 for surrounding and fixing the latch 2
As shown in a development view of FIG. 4, a rigid metal plate is punched out to form an original plate 19 having a predetermined shape, and this is bent. The frame body 5 has substantially triangular side walls 6 and 6 having a pair of claw pieces 12, 12 erected from both side edges of the bottom plate 11 and fixedly provided at the upper end thereof.
A pair of auxiliary walls 8, 8, which are bent inward from the rear end edges of the side walls 6, respectively, and provided with recesses 7, 7 in which the shaft pins 16 of the latch rods 3 are fitted, And a rear wall 10 provided with a through hole 9 standing up from the rear end edge and through which the shaft pin 16 of the latch bar 3 is inserted. And a hole-shaped portion 21 having a pair of recesses 7, 7 provided at the edges of the auxiliary walls 8, 8 facing each other,
The through hole 9 of the rear wall 10 is provided coaxially so that the shaft pin 16 is inserted therethrough, and the auxiliary walls 8, 8 and the rear wall 10 are formed in close contact. Reference numeral 20 denotes a washer 20 mounted on the shaft pin 16 and interposed between the frame 5 and the latch bar 3. A tip end of the latch bar 3 formed of a rigid metal bar connected to the frame 5 has a shaft pin 16 having an outer diameter substantially equal to the hole size of the through hole 9. Are formed integrally. When connecting the latch bar 3 to the frame 5 formed as described above, first, the shaft pin 16 of the latch bar 3 is inserted through the washer 20 and the through hole 9 of the rear wall 10 of the frame 5. Then, the ends of the shaft pins 16 are connected by hitting and caulking, and firmly fixed. Since the shaft pin 16 is formed coaxially and integrally with the tip of the latch bar 3, it can be set to any thickness suitable for the caulking operation. Therefore, the shaft pin set to an appropriate thickness does not cause distortion due to the caulking operation, and the rear wall 10 serving as a connecting portion of the frame body 5 is formed as a double wall, so that the latch rod 3 and the frame are formed. It is rigidly integrated with the body 5. A washer may be interposed in the caulking portion 17, but since the auxiliary walls 8, 8 also function as a washer, they can be sufficiently firmly fixed without a separate washer. To assemble the latch head 4, the latch body 2 is fitted into the frame 5 to which the latch rod 3 is connected with the inclined cam surface 1 facing upward, and the projection 15 is fitted into the through-hole 14 to latch the latch head 4. The head is prevented from coming off in the front-rear direction, and the claw pieces 12, 12 are folded inwardly and caulked to secure the head from coming off in the vertical direction. According to the latch head of the present invention,
The connecting portion between the latch head and the latch bar is formed as a double wall, and the tip of the shaft pin formed integrally with the tip of the latch bar is caulked and fixed, so that the connecting portion can be made robust, Further, since the force applied to the latch head does not work in the direction around the shaft pin, the connecting portion does not rattle even when used many times. Therefore, the strength of the entire latch is improved. Further, according to the latch head according to the present invention, the latch head has a structure in which the latch head is connected by a shaft pin integrally formed at the tip of the latch rod. There is no need to make a hole for inserting the lock pin into the lock pin, or to separately prepare and set the lock pin. Therefore, the operation of assembling the latch is simplified, and the latch can be manufactured at low cost.
【図面の簡単な説明】
【図1】本発明の一実施例におけるラッチヘッドの分解
斜視図。
【図2】図1に示した実施例におけるラッチヘッドの平
面図。
【図3】図1に示した実施例におけるラッチヘッドの側
面図。
【図4】図1に示した実施例におけるラッチヘッドの枠
体の展開図。
【図5】従来のラッチヘッドの平面図。
【図6】従来のラッチヘッドの側面図。
【符号の説明】
1 傾斜カム面
2 ラッチ本体
3 ラッチ棒
4 ラッチヘッド
5 枠体
6 側壁
7 凹所
8 補助壁
9 貫通孔
10 後壁
11 底壁
16 軸ピンBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a latch head according to an embodiment of the present invention. FIG. 2 is a plan view of the latch head in the embodiment shown in FIG. FIG. 3 is a side view of the latch head in the embodiment shown in FIG. 1; FIG. 4 is a development view of a frame of the latch head in the embodiment shown in FIG. 1; FIG. 5 is a plan view of a conventional latch head. FIG. 6 is a side view of a conventional latch head. [Description of Signs] 1 Inclined cam surface 2 Latch body 3 Latch rod 4 Latch head 5 Frame 6 Side wall 7 Depression 8 Auxiliary wall 9 Through hole 10 Rear wall 11 Bottom wall 16 Axis pin
Claims (1)
本体と、前記ラッチ本体を包囲して固定し、且つラッチ
棒に連結する金属製の枠体とからなるラッチヘッドにお
いて、前記枠体が、底板の両側縁からそれぞれ起立した
側壁と、前記側壁の後端縁からそれぞれ内側に折り曲げ
られ前記ラッチ棒の先端に一体に形成された軸ピンが嵌
装する凹所が設けられた補助壁と、前記底板の後端縁か
ら起立し前記軸ピンが挿通する貫通孔が設けられた後壁
とを有するとともに、前記ラッチ棒の先端に一体に形成
された軸ピンを前記後壁に設けられた貫通孔および前記
補助壁に設けられた凹所を挿通させた後前記枠体の内側
から前記軸ピンの先端をかしめ、前記補助壁と後壁とを
重ねて狭持することにより前記枠体とラッチ棒とを連結
することを特徴とするラッチヘッド。(57) [Claim 1] A latch body made of synthetic resin having an inclined cam surface, and a metal frame surrounding and fixing the latch body and connected to a latch rod. In this latch head, the frame body is fitted with side walls rising from both side edges of the bottom plate and axial pins integrally bent at the rear end edges of the side walls and integrally formed at the tips of the latch rods. an auxiliary wall recess is provided, together with the shaft pin standing upright from the rear edge of the bottom plate to have a rear wall of the through hole is provided through, formed integrally with the distal end of the latch bar
Through-hole provided in the rear wall and the shaft pin
After inserting the recess provided in the auxiliary wall, the inside of the frame
Caulking the tip of the shaft pin from
The frame and the latch bar are connected by overlapping and holding
A latch head.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23223094A JP3491847B2 (en) | 1994-09-01 | 1994-09-01 | Latch head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23223094A JP3491847B2 (en) | 1994-09-01 | 1994-09-01 | Latch head |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0874459A JPH0874459A (en) | 1996-03-19 |
JP3491847B2 true JP3491847B2 (en) | 2004-01-26 |
Family
ID=16936020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23223094A Expired - Lifetime JP3491847B2 (en) | 1994-09-01 | 1994-09-01 | Latch head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3491847B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100844348B1 (en) * | 2007-11-30 | 2008-07-07 | 동성산업 주식회사 | Latch bolt for door lock |
Families Citing this family (1)
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CN103437603B (en) * | 2013-08-28 | 2015-12-23 | 江苏爵格工业设备有限公司 | A kind of blast-resistant door pin lock device |
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1994
- 1994-09-01 JP JP23223094A patent/JP3491847B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100844348B1 (en) * | 2007-11-30 | 2008-07-07 | 동성산업 주식회사 | Latch bolt for door lock |
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JPH0874459A (en) | 1996-03-19 |
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