CN2746086Y - Limit device of door opening apparatus - Google Patents
Limit device of door opening apparatus Download PDFInfo
- Publication number
- CN2746086Y CN2746086Y CN 200420110801 CN200420110801U CN2746086Y CN 2746086 Y CN2746086 Y CN 2746086Y CN 200420110801 CN200420110801 CN 200420110801 CN 200420110801 U CN200420110801 U CN 200420110801U CN 2746086 Y CN2746086 Y CN 2746086Y
- Authority
- CN
- China
- Prior art keywords
- gear
- cam
- transmission shaft
- power transmission
- switch
- 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 - Fee Related
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Abstract
The utility model discloses a limit device of door opening apparatus, comprising a transmission shaft with grooves, a gear cooperated with the grooves of the transmission shaft, a driven shaft, two cams, two switches, etc. The limit device of door opening apparatus has the advantages of simple structure, low cost, accurate orientation, etc. The utility model is widely used for the door opening apparatus and door rolling apparatus.
Description
Technical field
The utility model relates to a kind of door lifter, especially a kind of stopping means of door lifter.
Background technology
As everyone knows, automatically the open and close door position of door lifter is to limit, otherwise automatic door will bump owing to overshoot, causes mechanical breakdown.And now most of door lifter automatically is to utilize tongue tube to be housed on the machine or to bump the spring switch, and magnet steel or collision block are housed on the extreme position that on the door is the open and close door, moves through magnetic induction or mechanical collision with door and realizes opening at closing time spacing.These two kinds of limit method shortcomings are that tongue tube or impact switch are contained on the machine, and magnet steel or collision block are loaded on the door, and that both splits and induction or point of impingement upper-lower position require is high, uniformity is poor; In addition, because the machine leakage field impacts for the tongue tube sensitivity.Above shortcoming all can influence the accuracy of open and close door time limit allocation.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of above-mentioned existence, and the stopping means of a kind of accurate positioning, door lifter simple in structure is provided.
The stopping means of door lifter of the present utility model, comprise the power transmission shaft of tooth of synchronous belt, the gear that matches with the power transmission shaft groove, driven shaft, two cams, two switches, described gear is loaded on the described driven shaft, and described cam is fixed on the driven shaft and in described gear both sides; The groove of described power transmission shaft can realize that with the gear that cooperates 90 ° turn to; Described driven shaft, switch are fixed on the frame, and driven shaft can collide the cam on it with corresponding switch when rotating, and described two cams are collided with corresponding switch a time difference, and promptly during pass, cam and switch are collided; When door reached maximum position, another cam and another switch were collided; Described switch is a microswitch, provides a control circuit can lead to the signal that can break for when collide in described cam and it relay of door lifter.
Described cam is the both sides of being fixed in gear by holding screw.
The groove of described power transmission shaft cooperates with gear can be worm gear and worm gear pair cooperation; Also can be helical gear and worm gear pair cooperation; Also can be helical gear and screw thread pair cooperation.
According to the stopping means of above-described door lifter, have simple in structure, cost is low, the characteristics of accurate positioning.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 be Figure 1A-A to cut-away view.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
In Fig. 1, Fig. 2, the stopping means of door lifter of the present utility model is by comprising the power transmission shaft 1 of being with diagonal pitch, the gear 2 that matches with the power transmission shaft diagonal pitch, driven shaft 3, two cams 4 and 5, two switches 6 and 7, described gear 2 is loaded on the described driven shaft 3, and described cam 4 and 5 is fixed on the driven shaft 3 and in the both sides of described gear 2; The diagonal pitch of described power transmission shaft 3 and the gear that cooperates 2 can be realized 90 °, and to turn to be that power transmission shaft 1 is perpendicular with driven shaft 3; Described driven shaft 3, switch 6 and 7 are fixed on the frame, driven shaft 3 can collide the cam 4 on it with corresponding switch 6 when rotating, and cam 5 can be collided with corresponding switch 7, described two cams 4 and 5 are collided with corresponding switch 6 and 7 time difference, when promptly door closed, a cam 4 was collided with switch 6; When door reached maximum position, another cam 5 was collided with another switch 7; Described switch 6 and 7 is microswitches, provides a control circuit can lead to the signal that can break for when collide in described cam and it relay of door lifter.
Claims (5)
1, a kind of stopping means of door lifter, it is characterized in that: comprise the power transmission shaft of tooth of synchronous belt, the gear that matches with the power transmission shaft groove, driven shaft, two cams, two switches, described gear is loaded on the described driven shaft, and described cam is fixed on the driven shaft and in described gear both sides; The groove of described power transmission shaft can realize that with the gear that cooperates 90 ° turn to; Described driven shaft, switch are fixed on the frame, and driven shaft can collide the cam on it with corresponding switch when rotating, and described two cams are collided with corresponding switch a time difference, and promptly during pass, cam and switch are collided; When door reached maximum position, another cam and another switch were collided; Described switch is a microswitch, provides a control circuit can lead to the signal that can break for when collide in described cam and it relay of door lifter.
2, the stopping means of door lifter according to claim 1 is characterized in that: described cam is the both sides of being fixed in gear by holding screw.
3, the stopping means of door lifter according to claim 1 is characterized in that: it is that worm gear and worm gear pair cooperate that the groove of described power transmission shaft cooperates with gear.
4, the stopping means of door lifter according to claim 1 is characterized in that: it is that helical gear and worm gear pair cooperate that the groove of described power transmission shaft cooperates with gear.
5, the stopping means of door lifter according to claim 1 is characterized in that: it is that helical gear and screw thread pair cooperate that the groove of described power transmission shaft cooperates with gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420110801 CN2746086Y (en) | 2004-11-30 | 2004-11-30 | Limit device of door opening apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420110801 CN2746086Y (en) | 2004-11-30 | 2004-11-30 | Limit device of door opening apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2746086Y true CN2746086Y (en) | 2005-12-14 |
Family
ID=35582667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420110801 Expired - Fee Related CN2746086Y (en) | 2004-11-30 | 2004-11-30 | Limit device of door opening apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2746086Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906928A (en) * | 2010-08-04 | 2010-12-08 | 宜昌四八二〇机电有限公司 | Anti-explosion door roller |
-
2004
- 2004-11-30 CN CN 200420110801 patent/CN2746086Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906928A (en) * | 2010-08-04 | 2010-12-08 | 宜昌四八二〇机电有限公司 | Anti-explosion door roller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051214 Termination date: 20121130 |