CN204921854U - Drive non -loaded worm connection structure who starts of refrigerator air door mechanism's motor - Google Patents
Drive non -loaded worm connection structure who starts of refrigerator air door mechanism's motor Download PDFInfo
- Publication number
- CN204921854U CN204921854U CN201520669450.XU CN201520669450U CN204921854U CN 204921854 U CN204921854 U CN 204921854U CN 201520669450 U CN201520669450 U CN 201520669450U CN 204921854 U CN204921854 U CN 204921854U
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- China
- Prior art keywords
- worm
- gear
- air door
- driving cog
- main shaft
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Abstract
The utility model discloses a drive non -loaded worm connection structure who starts of refrigerator air door mechanism's motor, include worm and the gear wheel constituteed by main shaft and driving cog, the main shaft with shaft hole interference fit on the driving cog, the gear wheel go here and there in on the main shaft, the gear wheel has submerged kick on the terminal surface, the driving cog has the boss on the terminal surface, the boss with the kick forms clearance fit in the circumferential direction direction. The utility model has the advantages that: change the structure of worm and gear, though the worm clearance fit with the gear, when the gear drives the worm rotation, with the plane laminating, reduce to drive the atress when rotating between the two, owing to the relative turned angle between gear and the worm is limited, reduced the atress of a measured time simultaneously, can easily realize non -loaded the starting behind the motor power.
Description
Technical field
The utility model relates to a kind of connection for transmission device, particularly a kind of structure connecting motor with the worm screw in worm couple.
Background technique
The air door mechanism of refrigerator, as shown in Figure 1, adopt the gear teeth wheels that friction wheel 1, worm screw 2, anti-non-return form with the special shape gear 3 rotated, gearwheel 4 and small gear 5, common composition driving mechanism, direct current generator 6 is connected with small gear 5, and air door door-plate drives opening and closing by special shape gear 3.By controlling the forward and reverse rotation of direct current generator, realize the opening and closing of air door door-plate.
As shown in Figure 2, worm screw 2 adopts split-type structural, comprises main shaft 7 and driving cog 8, the axis hole interference fit on main shaft 7 and driving cog 8, main shaft 7 and the attachment hole Spielpassung on gearwheel 4.
Direct current generator has starting characteristic, by static to constant rotational speed be a boosting velocity procedure.When starting to start, motor output torque is less, and when reaching constant rotational speed, motor just exports constant torque.
Worm Wheel System tooth is oblique angle, has latching characteristics.
When direct current generator rotates forward, air door door-plate cuts out, and during direct current generator reversion, air door door-plate is opened.When after accident power-off as being energized to direct current generator, during motor reversal, attachment hole on gearwheel and the gap between worm screw main shaft drive worm screw to rotate, because the load of air door door-plate end is larger, and now worm screw and friction wheel are in locking state, there is certain coupling mechanism force, because moment increases by zero, cause motor torque to be less than coupling mechanism force, just there will be the phenomenon that air door door-plate initially can not be driven to open.
Model utility content
Model utility object: for the problems referred to above, the purpose of this utility model is to provide a kind of after accident power-off, can drive the worm screw linkage structure of refrigerator air door mechanism motor No Load Start.
Technological scheme: a kind of worm screw linkage structure driving refrigerator air door mechanism motor No Load Start, comprise the worm screw and gearwheel that are made up of main shaft and driving cog, axis hole interference fit on described main shaft and described driving cog, described gearwheel string is on described main shaft, described gearwheel has the concave bottom of sinking on end face, described driving cog has boss on end face, and described boss and described concave bottom form Spielpassung in circumferential sense of rotation.
Best, described concave bottom is fan-shaped.
Best, described concave bottom center on the end face of described driving cog is symmetrical arranged.
Beneficial effect: compared with prior art, the utility model has the advantages that: the structure changing worm screw and gear, although worm screw and gear are Spielpassung, but when gear driven worm screw is rotated, between the two with plane laminating, what reduce to drive when rotating is stressed, simultaneously owing to relatively rotating limited angle between gear and worm screw, stressed when reducing starting, easily can realize the No Load Start after motor power-off.
Accompanying drawing explanation
Fig. 1 is the existing structure schematic diagram of the air door mechanism of refrigerator;
Fig. 2 is split type worm screw and gearwheel linkage structure schematic diagram;
Fig. 3 is that A-A in fig. 2 analyses and observe position, corresponding to structural representation of the present utility model;
Fig. 4 is the gearwheel structural front view in the utility model;
Fig. 5 is the B-B sectional view of Fig. 4;
Fig. 6 is the driving cog structural front view of the worm screw in the utility model;
Fig. 7 is the C direction view of Fig. 6.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the utility model further, these embodiments should be understood and be only not used in restriction scope of the present utility model for illustration of the utility model, after having read the utility model, the amendment of those skilled in the art to the various equivalent form of value of the present utility model has all fallen within the application's claims limited range.
As shown in figs. 3-7, a kind of worm screw linkage structure driving refrigerator air door mechanism motor No Load Start, comprise the worm screw be made up of main shaft 1-1 and driving cog 1-2, and gearwheel 1-3, axis hole interference fit on main shaft 1-1 and driving cog 1-2, gearwheel 1-3 goes here and there on main shaft 1-1, gearwheel 1-3 has the concave bottom 1-4 of sinking on end face, driving cog 1-2 has boss 1-5 on end face, driving cog 1-2, after gearwheel 1-3 and main shaft 1-1 assembles, boss 1-5 embeds in concave bottom 1-4, in circumferential sense of rotation, there is matching gap 1-6 between the two, thus formation Spielpassung.
Concave bottom 1-4 is fan-shaped, and the end face of driving cog 1-2 is centrosymmetric setting, and boss 1-5 rotates and limited in concave bottom 1-4.
The gear teeth wheels of gearwheel and small gear composition, friction wheel, worm screw, anti-non-return are with the special shape gear, the gear teeth wheels that rotate, and jointly form air door driving mechanism, direct current generator is connected with small gear, and air door door-plate is driven by special shape gear and opens and closes.By controlling the forward and reverse rotation of direct current generator, realize the opening and closing of air door door-plate.
When direct current generator forward or reverse, boss circumference in concave bottom is rotated, because the rotation angle of boss in concave bottom is limited, after turning an angle both formed planes laminating, namely gearwheel drives worm screw to start transmission, thus reduce drive rotate time stressed, stressed when namely reducing starting, thus the No Load Start that can easily realize after motor power-off, after motor torque promotes, drive air door door-plate to close or open.
Claims (3)
1. one kind drives the worm screw linkage structure of refrigerator air door mechanism motor No Load Start, comprise the worm screw be made up of main shaft (1-1) and driving cog (1-2), and gearwheel (1-3), axis hole interference fit on described main shaft (1-1) and described driving cog (1-2), described gearwheel (1-3) is gone here and there on described main shaft (1-1), it is characterized in that: described gearwheel (1-3) has the concave bottom (1-4) of sinking on end face, described driving cog (1-2) has boss (1-5) on end face, described boss (1-5) and described concave bottom (1-4) form Spielpassung in circumferential sense of rotation.
2. the worm screw linkage structure of drive refrigerator air door mechanism motor No Load Start according to claim 1, is characterized in that: described concave bottom (1-4) is for fan-shaped.
3. the worm screw linkage structure of drive refrigerator air door mechanism motor No Load Start according to claim 1, is characterized in that: described concave bottom (1-4) center on the end face of described driving cog (1-2) is symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520669450.XU CN204921854U (en) | 2015-08-31 | 2015-08-31 | Drive non -loaded worm connection structure who starts of refrigerator air door mechanism's motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520669450.XU CN204921854U (en) | 2015-08-31 | 2015-08-31 | Drive non -loaded worm connection structure who starts of refrigerator air door mechanism's motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921854U true CN204921854U (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520669450.XU Active CN204921854U (en) | 2015-08-31 | 2015-08-31 | Drive non -loaded worm connection structure who starts of refrigerator air door mechanism's motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204921854U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065577A (en) * | 2015-08-31 | 2015-11-18 | 江苏凯德电控科技有限公司 | Worm connecting structure for driving motor of refrigerator ventilation door mechanism to start in non-loaded mode |
-
2015
- 2015-08-31 CN CN201520669450.XU patent/CN204921854U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065577A (en) * | 2015-08-31 | 2015-11-18 | 江苏凯德电控科技有限公司 | Worm connecting structure for driving motor of refrigerator ventilation door mechanism to start in non-loaded mode |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |