CN2823629Y - Normal closed hand-controlled locking mechanism - Google Patents
Normal closed hand-controlled locking mechanism Download PDFInfo
- Publication number
- CN2823629Y CN2823629Y CN 200520044503 CN200520044503U CN2823629Y CN 2823629 Y CN2823629 Y CN 2823629Y CN 200520044503 CN200520044503 CN 200520044503 CN 200520044503 U CN200520044503 U CN 200520044503U CN 2823629 Y CN2823629 Y CN 2823629Y
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- CN
- China
- Prior art keywords
- locking block
- locking
- sides
- screw
- narrow groove
- 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
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Abstract
The utility model relates to a normal close type hand-controlled locking mechanism, which comprises a base, a supporting pole and a guide pole which are fixedly connected with the base. A U-shaped groove is arranged on the upper part of the supporting pole. A fixing shaft is fixedly connected in transverse holes on both sides of the U-shaped groove. A locking block which can wind the fixing shaft to freely rotate is sheathed in the fixing shaft. The center of the locking block passes through a fixing shaft hole, and is provided with a narrow groove. The locking block is divided into two halves, and only the lower sides of the two halves are connected. One side of the narrow groove is provided with a screw hole, and a control handle is screwed into the screw hole. The locking block and a U-shaped shifting fork are fixedly connected by a connecting rod. Both sides of the U-shaped shifting fork are provided with waist-shaped long grooves, and the U-shaped shifting fork and the head parts of cylindrical head screws which are fixedly connected to both sides of a movable sleeve form a sliding pair. A hole which crosses both sides of the narrow groove is additionally arranged on the locking block, and a locking screw passes through the hole. One end of the locking screw is fixedly connected with one side of the narrow groove, and the other end of the locking screw is extended outside the locking block. A spring, a pressing ring and a nut are sheathed on the rod end of the locking screw which is extended. When the height of the utility model is adjusted, the control handle is rotated and the locking block can be rotated to drive the movable sleeve to move from top to bottom. The control handle is reversely rotated, the spring is restored and the fixing shaft is locked.
Description
Technical field
The utility model relates to the manual locking mechanism of a kind of Normally closed type, belongs to the hand-operated tools field.
Background technique
At present, the manual locking mechanism of using in the engineering is open in usual.Have certain matching relationship between the locking block of control lifting and its dead axle, locking block central authorities have narrow groove, so it can freely rotate around dead axle within the specific limits.In the time the weight that lifts need being locked in a certain height, need to make locking block tightly embrace dead axle as possible by the screwed handle of artificial rotation one end, make the enough frictional force of generation between the two, with the moment of balancing gravity P generation.Obviously, this manual locking mechanism open in usual needs very big artificial screwing force, on the other hand, increase along with wearing and tearing, gap between the friction pair also can increase, and has therefore further strengthened the labor intensity of artificial locking, and might make locking mechanism malfunctioning, damage instrument and equipment, cause security incident.
Summary of the invention
For overcoming above-mentioned shortcoming, the utility model proposes the manual locking mechanism of a kind of Normally closed type.Pillar and guide pillar that it comprises base, connects firmly with base; Pillar top has " U " shape groove, and dead axle connects firmly in the cross-drilled hole of " U " shape groove both sides, is with a locking block that can freely rotate around dead axle in the dead axle, and the central authorities of locking block pass the dead axle hole and have narrow groove, and with the locking block dimidiation, only the below links to each other; One side of narrow groove has screw, and the threaded front end of Joystick is screwed into screw; Locking block connects firmly with connecting rod with " U " type shift fork, and there is waist shape elongated slot " U " type shift fork both sides, and it forms sliding pair with the head of the fillister head screw that is fixed on the movable sheath both sides; The hole of crossing narrow groove both sides is arranged on locking block in addition, and locking screw passes wherein, and one end and narrow groove one side connect firmly, and the other end stretches out locking block; The locking screw rod end that stretches out is with spring, trim ring and nut.Can be used for adjusting the impacting force of spring by nut, can make locking block that dead axle is produced the enough power of holding tightly, thereby make this frictional force be enough to the square of balancing gravity, make movable sheath be locked in a certain height the dead axle center to the square at dead axle center.When needs are regulated the movable sheath height, only need rotate Joystick gently, overcome spring force with the front end of handle and back down second half of locking block, make between locking block hole and dead axle and produce the gap, thereby the frictional force of losing, locking block can freely rotate, and drives movable sheath by " U " type shift fork and moves up and down, and realizes the adjustment to the movable sheath height, the backward rotation Joystick, can make spring reset, locking block is controlled by spring force, again mechanism is locked.
The utility model has become existing locking open in usual into Normally closed type locking, has greatly improved the reliability of mechanism; By artificial rotation screw-threaded coupling, change into spring force locking, greatly reduce labor intensity.On the other hand, when friction pair wore and tore, spring force can play automatic compensating action, by the impacting force of nut Regulation spring, but again the friction compensation pair than galling, improved the functional reliability of locking mechanism, increase the service life, avoid accident to take place.
Description of drawings
Accompanying drawing 1 is a generalized section of the present utility model.
Accompanying drawing 2 is straight line lowering or hoisting gear A-A direction partial sectional views that the utility model connects.
1. base, 2. pillar, 3. locking block, 4. dead axle, 5. Joystick, 6. locking screw, 7. spring, 8. trim ring, 9. nut, 10. connecting rod, 11. movable sheaths, 12. guide pillars, " U " shape shift fork of 13. both sides band waist shape elongated slots, 14. fillister head screws, 15.
Linear motion bearing.
Embodiment
Be described as follows in conjunction with the utility model accompanying drawing 1, accompanying drawing 2, wherein label 1-9 has formed the manual locking mechanism of Normally closed type of the present utility model, and 10-15 has formed the straight line lowering or hoisting gear.Under normal conditions, because the synergy of locking screw 6 and spring 7 has enough frictional force between locking block 3 and the dead axle 4, thereby with the locking position of movable sheath 11.When needs are regulated the height of movable sheath, rotate Joystick 5, make it overcome spring force, back down the opposite side of the narrow groove of locking block, lose frictional force because of producing the gap between locking block hole and dead axle, this moment, locking block can freely rotate around dead axle, when the movable sheath 11 of lowering or hoisting gear reaches needed height, the Joystick counterrotating retreats, and spring reset has been controlled locking block again, again mechanism is locked.
Locking screw preferably is positioned at the top of Joystick; Cross the hole of narrow groove both sides on the locking block, wherein shock mount one side is a unthreaded hole, and opposite side can be a unthreaded hole, also can be screw.In working order down, bearing load P on the movable sheath is when needs are adjusted the movable sheath height, rotate Joystick, make the Joystick front end back down the opposite side of the narrow groove of locking block, produce the gap between locking block hole and dead axle and lose frictional force, prize Joystick, locking block can freely rotate around dead axle, and drive movable sheath by " U " shape shift fork and move up and down, after adjusting to proper height, the Joystick counterrotating is retreated, spring reset has been controlled locking block again, again mechanism is locked.
The utility model can be used for locking and the adjusting control of rotary evaporator to vessel or bath working depth, also can be widely used in the small mechanical equipment that other utilizes manual locking and positioning.
Claims (1)
1. the manual locking mechanism of a Normally closed type, pillar and guide pillar that it comprises base, connects firmly with base; Pillar top has " U " shape groove, and dead axle connects firmly in the cross-drilled hole of " U " shape groove both sides, is with a locking block that can freely rotate around dead axle in the dead axle, and the central authorities of locking block pass the dead axle hole and have narrow groove, and with the locking block dimidiation, only the below links to each other; One side of narrow groove has screw, and the threaded front end of Joystick is screwed into screw; Locking block connects firmly with connecting rod with " U " type shift fork, and there is waist shape elongated slot " U " type shift fork both sides, and it forms sliding pair with the head of the fillister head screw that is fixed on the movable sheath both sides; It is characterized in that: the hole of crossing narrow groove both sides is arranged on the locking block in addition, and locking screw passes wherein, and one end and narrow groove one side connect firmly, and the other end stretches out locking block; The locking screw rod end that stretches out is with spring, trim ring and nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520044503 CN2823629Y (en) | 2005-08-24 | 2005-08-24 | Normal closed hand-controlled locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520044503 CN2823629Y (en) | 2005-08-24 | 2005-08-24 | Normal closed hand-controlled locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2823629Y true CN2823629Y (en) | 2006-10-04 |
Family
ID=37032741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520044503 Expired - Lifetime CN2823629Y (en) | 2005-08-24 | 2005-08-24 | Normal closed hand-controlled locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2823629Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343984A (en) * | 2011-07-08 | 2012-02-08 | 凯迈（洛阳）测控有限公司 | Locking mechanism in rudder deflection angle testing device |
| CN102692317A (en) * | 2011-03-23 | 2012-09-26 | 加特可株式会社 | Flash evaluation device |
-
2005
- 2005-08-24 CN CN 200520044503 patent/CN2823629Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692317A (en) * | 2011-03-23 | 2012-09-26 | 加特可株式会社 | Flash evaluation device |
| CN102343984A (en) * | 2011-07-08 | 2012-02-08 | 凯迈（洛阳）测控有限公司 | Locking mechanism in rudder deflection angle testing device |
| CN102343984B (en) * | 2011-07-08 | 2014-01-01 | 凯迈（洛阳）测控有限公司 | Locking mechanism in rudder deflection angle testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150824 Granted publication date: 20061004 |
|
| EXPY | Termination of patent right or utility model |