CN2717312Y - Rewinding process reducing speed device for winding curtain - Google Patents
Rewinding process reducing speed device for winding curtain Download PDFInfo
- Publication number
- CN2717312Y CN2717312Y CN 200420020890 CN200420020890U CN2717312Y CN 2717312 Y CN2717312 Y CN 2717312Y CN 200420020890 CN200420020890 CN 200420020890 CN 200420020890 U CN200420020890 U CN 200420020890U CN 2717312 Y CN2717312 Y CN 2717312Y
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- tubular rotating
- curtain
- groove
- deceleration
- 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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- Curtains And Furnishings For Windows Or Doors (AREA)
Abstract
The utility model discloses a rewinding process reducing speed device for winding curtain, which comprises a tubular rotating shaft and a fixed mandrel. The fixed mandrel is arranged in the tubular rotating shaft, and the fixed mandrel is coaxially provided with a cylinder component; a groove is arranged at the lateral surface of the cylinder component; the radius of the bottom surface of the groove is gradually increased form one end to the other end; a speed reducing ball is arranged in the groove; the sum that one radius at least of the groove bottom surface and the diameter of the speed reducing ball is larger than the inner side radius of the tubular rotating shaft; the direction of the increasing radius is the same as the unreeling direction of the tubular rotating shaft. When the curtain is unreeled, the rotation of the tubular rotating shaft frictionizes the speed reducing ball; the speed reducing ball moves toward to the unreeling direction of the tubular rotating shaft; the radius at bottom surface of the groove at the lower side of the speed reducing ball is increased; the frictional force is increased; the rotation speed of the tubular rotating shaft is slowed up, and the slow speed of the backrush of the curtain is realized. The utility model has the advantages of simple structure, reliable use, and easy operation.
Description
Technical field
The utility model relates to furniture, relates in particular to the curtain of refrigerator display case, the particularly a kind of process of unrolling deceleration device of the curtain that is used to reel.
Background technology
In the prior art, fresh food such as the vegetables in the market, fruit or meat all need to refrigerate in the showcase with refrigeration function, and for thermal insulation and anti-contamination, open position, showcase front side is provided with curtain and cuts off.The curtain that uses is the coiling curtain at present, between two side stands, be provided with a fixed central spindle, the fixed central spindle outside is sheathed with a tubular rotating shaft, be wound with curtain on the tubular rotating shaft, be provided with the gap between tubular rotating shaft and the fixed central spindle, be provided with spring in the gap of tubular rotating shaft and fixed central spindle, one end of spring is connected with tubular rotating shaft, the other end of spring is connected with fixed central spindle, the two ends of tubular rotating shaft are arranged on two side stands by bearing element respectively, with the axial location of maintenance tubular rotating shaft, during the pulling curtain, tubular rotating shaft is rotated in fixed central spindle, simultaneously, in spring, gather potential energy, during axle backrush curtain, the potential energy of spring discharges, potential energy is converted to the kinetic energy of tubular rotating shaft within a short period of time, makes the backrush of tubular rotating shaft height to cause curtain backrush speed too fast, produce impact with the showcase periphery, can damage showcase.
Summary of the invention
Technical problem of the prior art to be solved in the utility model is: because in the prior art, the structure of coiling curtain is to be provided with a fixed central spindle between two side stands, the fixed central spindle outside is sheathed with a tubular rotating shaft, be wound with curtain on the tubular rotating shaft, be provided with the gap between tubular rotating shaft and the fixed central spindle, be provided with spring in the gap of tubular rotating shaft and fixed central spindle, one end of spring is connected with tubular rotating shaft, the other end of spring is connected with fixed central spindle, the two ends of tubular rotating shaft are arranged on two side stands by bearing element respectively, during the pulling curtain, tubular rotating shaft is rotated in fixed central spindle, simultaneously, in spring, gather potential energy, but during the backrush curtain, the potential energy of spring discharges rapidly, and potential energy is converted to the kinetic energy of axis of rotation within a short period of time, make the backrush of axis of rotation height, cause curtain backrush speed too fast, produce with the showcase periphery and impact, can damage showcase.
The utility model is the process of the unrolling deceleration device that technical scheme that solution above-mentioned technical problem of the prior art is adopted provides a kind of curtain that is used to reel, the process of the unrolling deceleration device of the described this curtain that is used to reel is made of tubular rotating shaft and fixed central spindle, wherein, described fixed central spindle is arranged in the described tubular rotating shaft, be coaxially arranged with a cylinder component in the described fixed central spindle, be provided with at least one groove in the lateral surface of described cylinder component, described groove has a bottom surface, described bottom surface has two ends at least, described cylinder component increases to another end of described bottom surface gradually in the radius of the bottom surface portions of its a groove end from described bottom surface, be provided with deceleration ball or deceleration cylinder in the described groove, described cylinder component has the inner radius of the diameter sum of its radius of a place and described deceleration ball or deceleration cylinder greater than described tubular rotating shaft at least in groove floor.
Further, on described cylinder component, the direction that increases of the radius of its groove floor part is identical with the backrush direction of described tubular rotating shaft.
Further, the diameter of described cylinder component is greater than the diameter of described fixed central spindle, be provided with the gap between described tubular rotating shaft and the described fixed central spindle, be provided with spring in the described gap, one end of described spring is connected with described tubular rotating shaft, and the other end of described spring is connected with described fixed central spindle.
Further, the two ends of described tubular rotating shaft are arranged in the coiling curtain fixed support.
Further, be respectively arranged with bearing element between the two ends of described tubular rotating shaft and the described coiling curtain fixed support.
Further, be connected with curtain on the outer wall of described tubular rotating shaft.
Further, be provided with an axis hole in the described cylinder component, described axis hole and described cylinder component coaxial line, described fixed central spindle is arranged in the described axis hole, and described fixed central spindle and described cylinder component fix by the draw-in groove structure.
The course of work of the present utility model is: when curtain launches, the tubular rotating shaft rotation, the inwall of tubular rotating shaft and deceleration ball or the friction of deceleration cylinder, deceleration ball or deceleration cylinder are under the effect of frictional force, direction to the tubular rotating shaft rotation moves, because on described cylinder component, the direction that the radius of its groove floor part increases is opposite with the direction of tubular rotating shaft rotation, so deceleration ball or deceleration cylinder are to the direction motion of the reduced radius of groove floor, make the inwall of deceleration ball or deceleration cylinder and tubular rotating shaft present the trend that disengages, the frictional force of the inwall of deceleration ball or deceleration cylinder and tubular rotating shaft reduces, and curtain can launch smoothly; During the backrush curtain, tubular rotating shaft is circled round, the inwall of tubular rotating shaft and deceleration ball or the friction of deceleration cylinder, deceleration ball or deceleration cylinder are under the effect of frictional force, the direction of circling round to tubular rotating shaft moves, because on described cylinder component, the direction that the radius of its groove floor part increases is identical with the direction that tubular rotating shaft is circled round, so deceleration ball or deceleration cylinder are to the direction motion of the radius increase of groove floor, make the inner wall pressure of deceleration ball or deceleration cylinder and tubular rotating shaft increase, the frictional force of the inwall of deceleration ball or deceleration cylinder and tubular rotating shaft increases, slow down the speed of circling round of tubular rotating shaft, curtain can be realized slowly unrolling.
The utility model and prior art compare, and its effect is actively with tangible.The utility model is provided with a cylinder component in fixed central spindle, and on cylinder component, be provided with the deceleration ball or the deceleration cylinder that can move with the tubular rotating shaft direction of rotation, by the deceleration ball of the variation of the depth on the cylinder component or the guide groove of deceleration cylinder, make deceleration ball or deceleration cylinder under two kinds of direction of rotation of tubular rotating shaft, have two kinds of pressure trend to tubular rotating shaft, thereby when the backrush curtain, the frictional force of the inwall of increase and tubular rotating shaft, slow down the speed of circling round of tubular rotating shaft, realize slowly unrolling of curtain.
Description of drawings:
Fig. 1 is the structural representation of an embodiment of the process of the unrolling deceleration device of a kind of curtain that is used to reel of the utility model;
Fig. 2 is the cross section structure schematic diagram of the process of the unrolling deceleration device of a kind of curtain that is used to reel of the utility model;
Fig. 3 is partial cross section's structural representation of the process of the unrolling deceleration device of a kind of curtain that is used to reel of the utility model;
Fig. 4 is the partial structurtes schematic diagram of the process of the unrolling deceleration device of a kind of curtain that is used to reel of the utility model;
The specific embodiment
As Fig. 1.Fig. 2, Fig. 3 and shown in Figure 4, the utility model is a kind of be used to the to reel process of the unrolling deceleration device of curtain, constitute by tubular rotating shaft 1 and fixed central spindle 2, wherein, described fixed central spindle 2 is arranged in the described tubular rotating shaft 1, be coaxially arranged with a cylinder component 3 in the described fixed central spindle 2, be provided with at least one groove 4 in the lateral surface of described cylinder component 3, described recessed 4 grooves have a bottom surface, described bottom surface has two ends at least, described cylinder component 3 increases to another end of described bottom surface gradually in the radius of the bottom surface portions of its groove 4 end from described bottom surface, be provided with deceleration ball or deceleration cylinder 5 in the described groove 4, described cylinder component 3 has the inner radius of the diameter sum of its radius of a place and described deceleration ball or deceleration cylinder 5 greater than described tubular rotating shaft 1 at least in groove 4 bottom surfaces.
On described cylinder component 3, the direction that increases of the radius of its groove 4 bottom surface portions is identical with the backrush direction of described tubular rotating shaft 1.
In a preferred embodiment of the present utility model, the diameter of described cylinder component 3 is greater than the diameter of described fixed central spindle 2, described tubular rotating shaft 1 and be provided with the gap between 6 fixed central spindles that state 2, be provided with spring 6 in the described gap, one end of described spring is connected with described tubular rotating shaft 1, and the other end of described spring 6 is connected with described fixed central spindle 2.
The two ends of described tubular rotating shaft 1 are arranged in the coiling curtain fixed support 7.
Concrete, be respectively arranged with bearing element 8 between the two ends of described tubular rotating shaft 1 and the described coiling curtain fixed support 7.
Be connected with curtain 9 on the outer wall of described tubular rotating shaft 1.
Be provided with an axis hole 10 in the described cylinder component 3, described axis hole 10 and described cylinder component 3 coaxial lines, described fixed central spindle 2 is arranged in the described axis hole 10, and described fixed central spindle 10 fixes by the draw-in groove structure with described cylinder component 3.
Claims (7)
1, a kind of process of unrolling deceleration device of the curtain that is used to reel, constitute by tubular rotating shaft and fixed central spindle, it is characterized in that: described fixed central spindle is arranged in the described tubular rotating shaft, be coaxially arranged with a cylinder component in the described fixed central spindle, be provided with at least one groove in the lateral surface of described cylinder component, described groove has a bottom surface, described bottom surface has two ends at least, described cylinder component increases to another end of described bottom surface gradually in the radius of the bottom surface portions of its a groove end from described bottom surface, be provided with deceleration ball or deceleration cylinder in the described groove, described cylinder component has the inner radius of the diameter sum of its radius of a place and described deceleration ball or deceleration cylinder greater than described tubular rotating shaft at least in groove floor.
2, the process of the unrolling deceleration device of the curtain that is used to reel according to claim 1 is characterized in that: on described cylinder component, the direction that increases of the radius of its groove floor part is identical with the backrush direction of described tubular rotating shaft.
3, the process of the unrolling deceleration device of the curtain that is used to reel according to claim 1 and 2, it is characterized in that: the diameter of described cylinder component is greater than the diameter of described fixed central spindle, be provided with the gap between described tubular rotating shaft and the described fixed central spindle, be provided with spring in the described gap, one end of described spring is connected with described tubular rotating shaft, and the other end of described spring is connected with described fixed central spindle.
4, according to the process of the unrolling deceleration device of claim 1 or the 2 or 3 described curtains that are used to reel, it is characterized in that: the two ends of described tubular rotating shaft are arranged in the coiling curtain fixed support.
5, the process of the unrolling deceleration device of the curtain that is used to reel according to claim 4 is characterized in that: be respectively arranged with bearing element between the two ends of described tubular rotating shaft and the described coiling curtain fixed support.
6, the process of the unrolling deceleration device of the curtain that is used to reel according to claim 1 is characterized in that: be connected with curtain on the outer wall of described tubular rotating shaft.
7, the process of the unrolling deceleration device of the curtain that is used to reel according to claim 1, it is characterized in that: be provided with an axis hole in the described cylinder component, described axis hole and described cylinder component coaxial line, described fixed central spindle is arranged in the described axis hole, and described fixed central spindle and described cylinder component fix by the draw-in groove structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020890 CN2717312Y (en) | 2004-03-04 | 2004-03-04 | Rewinding process reducing speed device for winding curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020890 CN2717312Y (en) | 2004-03-04 | 2004-03-04 | Rewinding process reducing speed device for winding curtain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2717312Y true CN2717312Y (en) | 2005-08-17 |
Family
ID=34892699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420020890 Expired - Lifetime CN2717312Y (en) | 2004-03-04 | 2004-03-04 | Rewinding process reducing speed device for winding curtain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2717312Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101025073B (en) * | 2006-12-26 | 2010-07-14 | 朱晓荧 | Rolling drum driving apparatus for rolling curtain |
| CN104806148A (en) * | 2014-01-24 | 2015-07-29 | 皇田工业股份有限公司 | Rolling control mechanism of automobile rolling screen device |
-
2004
- 2004-03-04 CN CN 200420020890 patent/CN2717312Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101025073B (en) * | 2006-12-26 | 2010-07-14 | 朱晓荧 | Rolling drum driving apparatus for rolling curtain |
| CN104806148A (en) * | 2014-01-24 | 2015-07-29 | 皇田工业股份有限公司 | Rolling control mechanism of automobile rolling screen device |
| CN104806148B (en) * | 2014-01-24 | 2016-07-06 | 皇田工业股份有限公司 | Rolling control mechanism of automobile rolling screen device |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140304 Granted publication date: 20050817 |