JPH045998U - - Google Patents
Info
- Publication number
- JPH045998U JPH045998U JP4439890U JP4439890U JPH045998U JP H045998 U JPH045998 U JP H045998U JP 4439890 U JP4439890 U JP 4439890U JP 4439890 U JP4439890 U JP 4439890U JP H045998 U JPH045998 U JP H045998U
- Authority
- JP
- Japan
- Prior art keywords
- expansion
- brake disc
- drafting
- support plate
- contraction mechanism
- 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.)
- Granted
Links
- 230000008602 contraction Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
Landscapes
- Braking Arrangements (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Description
図は本考案の一実施例を示し、第１図は製図ヘ
ツドの縦断面図、第２図はブレーキデイスク並び
に分度盤の平面図である。
１……製図ヘツド、２……支持板、３……スケ
ール取付板、４……分度盤、５……回動軸、１４
……ブレーキデイスク、１９，２０……長孔、２
１……拡縮機構、２２……左ねじ、２５……基線
固定レバー、２６……内周壁面。
The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal sectional view of a drafting head, and FIG. 2 is a plan view of a brake disc and a protractor. 1... Drafting head, 2... Support plate, 3... Scale mounting plate, 4... Protractor board, 5... Rotating shaft, 14
... Brake disc, 19, 20 ... Long hole, 2
DESCRIPTION OF SYMBOLS 1... Expansion/contraction mechanism, 22... Left-hand screw, 25... Base line fixing lever, 26... Inner peripheral wall surface.
Claims (1)
或はキヤリツジへ装着する支持板に、スケール取
付板並びに分度盤を同軸に枢着した製図ヘツドに
於て、前記分度盤の上面中心部を段設して同心円
の内周壁面を形成し、前記内周壁面間に金属板等
の弾性材にて形成したリング状のブレーキデイス
クを遊嵌するとともに、前記ブレーキデイスクの
一側部位を押圧して径方向へ変形せしめる拡縮機
構を前記支持板に設け、前記ブレーキデイスクと
拡縮機構とを連結したことを特徴とする製図ヘツ
ドの分度盤固定装置。 A drafting head used in a drafting machine in which a scale mounting plate and a protractor board are coaxially pivoted to a support plate attached to an arm or a carriage. A ring-shaped brake disc made of an elastic material such as a metal plate is loosely fitted between the inner peripheral walls, and one side portion of the brake disc is pressed. A protractor fixing device for a drafting head, characterized in that an expansion/contraction mechanism for deforming in the radial direction is provided on the support plate, and the brake disk and the expansion/contraction mechanism are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990044398U JP2504005Y2 (en) | 1990-04-25 | 1990-04-25 | Protractor fixing device for drafting head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990044398U JP2504005Y2 (en) | 1990-04-25 | 1990-04-25 | Protractor fixing device for drafting head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH045998U true JPH045998U (en) | 1992-01-20 |
| JP2504005Y2 JP2504005Y2 (en) | 1996-07-03 |
Family
ID=31557664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990044398U Expired - Lifetime JP2504005Y2 (en) | 1990-04-25 | 1990-04-25 | Protractor fixing device for drafting head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2504005Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53164244U (en) * | 1977-05-30 | 1978-12-22 | ||
| JPS55136594U (en) * | 1979-03-23 | 1980-09-29 |
-
1990
- 1990-04-25 JP JP1990044398U patent/JP2504005Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53164244U (en) * | 1977-05-30 | 1978-12-22 | ||
| JPS55136594U (en) * | 1979-03-23 | 1980-09-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2504005Y2 (en) | 1996-07-03 |
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