CN204921937U - Drive non -loaded worm connection structure who starts of automatic selection ice ware motor of refrigerator - Google Patents
Drive non -loaded worm connection structure who starts of automatic selection ice ware motor of refrigerator Download PDFInfo
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- CN204921937U CN204921937U CN201520669501.9U CN201520669501U CN204921937U CN 204921937 U CN204921937 U CN 204921937U CN 201520669501 U CN201520669501 U CN 201520669501U CN 204921937 U CN204921937 U CN 204921937U
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- opposite side
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- inclination angle
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- worm screw
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Abstract
The utility model discloses a drive non -loaded worm connection structure who starts of automatic selection ice ware motor of refrigerator, the connecting hole has been seted up on the worm, the shaft hole has been seted up on the backstop piece, motor shaft and shaft hole interference fit, backstop piece and connecting hole clearance fit, the connecting hole is convex polygon, and have two sets of parallel opposite side, each limit of parallel opposite side is in four planar quadrants of XY, parallel opposite side is m1 with the acute angle inclination that the X axiform becomes respectively, N1, the backstop piece has and corresponds parallel opposite side with parallel opposite side is corresponding, it is m2 with the acute angle inclination that the X axiform becomes respectively to correspond parallel opposite side, N2, M2 is less than m1, N2 is less than n1. The utility model discloses change the structure of worm and backstop piece, though the worm clearance fit with the backstop piece, when the backstop piece drives the worm rotation, laminate with the plane between the two, reduce to drive the atress when rotating, owing to the relative turned angle between backstop piece and the worm is limited, reduced the atress of a measured time simultaneously, 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
Refrigerator automatically select ice device, as shown in Figure 1, adopt friction wheel 1 and worm screw 2 transmission, stop block 3 is connected to the motor shaft of worm screw 2 and direct current generator 4, and friction wheel 1 drives pull bar 5.By controlling the forward and reverse rotation of direct current generator, realize stretching out and retraction of pull bar.
Axis hole interference fit on the motor shaft of direct current generator 4 and stop block 3, stop block 3 and the attachment hole Spielpassung on worm screw 2.
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 accident power-off, promote pull bar by external force, now, friction wheel skids, and is that pull bar resets.As being energized to direct current generator after accident power-off, during motor reversal, motor shaft rotates, then the gap between the attachment hole of stop block on worm screw drives worm screw to rotate, and because the load of push-and-pull rod end is comparatively large, 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 initially can not drive pull bar, cannot start.
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, and refrigerator can be driven automatically to select the worm screw linkage structure of ice device motor No Load Start.
Technological scheme: a kind of worm screw linkage structure driving refrigerator automatically to select ice device motor No Load Start, comprise worm screw, stop block, motor shaft, described worm screw offers attachment hole, described stop block offers axis hole, described motor shaft and described axis hole interference fit, described stop block and described attachment hole Spielpassung, described attachment hole is convex polygon, and there are two groups of parallel opposite side, each limit of described parallel opposite side is in four quadrants of XY plane, and the acute included angle that described parallel opposite side is formed with X-axis is respectively m1, n1; Described stop block has the corresponding parallel opposite side corresponding with described parallel opposite side, and the acute included angle that the parallel opposite side of described correspondence is formed with X-axis is respectively m2, n2; Described inclination angle m2 is less than described inclination angle m1, and described inclination angle n2 is less than described inclination angle n1.
Best, described inclination angle m1 equals described inclination angle n1.
Best, described inclination angle m1, described inclination angle n1 are all not less than 30 ° and are not more than 60 °.
Beneficial effect: compared with prior art, the utility model has the advantages that: the structure changing worm screw and stop block, although worm screw and stop block are Spielpassung, but when stop block drives worm screw to rotate, between the two with plane laminating, what reduce to drive when rotating is stressed, simultaneously owing to relatively rotating limited angle between stop block 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 automatically selecting ice device of refrigerator;
Fig. 2 is that A-A in FIG analyses and observe position, corresponding to structural representation of the present utility model;
Fig. 3 is the phase diagram of Fig. 2 when direct current generator rotates forward;
Fig. 4 is the phase diagram of Fig. 2 when direct current generator reverses.
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 Figure 2, a kind of worm screw linkage structure driving refrigerator automatically to select ice device motor No Load Start, comprise worm screw 1-1, stop block 2-1, motor shaft 3-1, worm screw 1-1 offers attachment hole 1-2, stop block 2-1 offers axis hole 2-2, motor shaft 3-1 and axis hole 2-2 interference fit, stop block 2-1 and attachment hole 1-2 Spielpassung.
Attachment hole 1-2 is convex polygon, and there are two groups of parallel opposite side 1-3,1-4, each bar limit of these two groups of parallel opposite side is respectively in four quadrants of XY plane, and the acute included angle that parallel opposite side 1-3 and X-axis are formed is m1, and the acute included angle that parallel opposite side 1-4 and X-axis are formed is n1; Stop block 2-1 also has two groups of parallel opposite side, the corresponding parallel opposite side 2-3 corresponding with parallel opposite side 1-3, the corresponding parallel opposite side 2-4 corresponding with parallel opposite side 1-4, the acute included angle that corresponding parallel opposite side 2-3 and X-axis are formed is m2, the acute included angle that corresponding parallel opposite side 2-4 and X-axis are formed is n2, and inclination angle m2 is less than inclination angle m1, inclination angle n2 is less than inclination angle n1.
Inclination angle m1 can be equal with inclination angle n1.Inclination angle m1, inclination angle n1 are all not less than 30 ° and are not more than 60 °.
As shown in Figure 3, when direct current generator rotates forward, motor shaft 3-1 drives stop block 2-1 to rotate, because the margin of inclination angle m2 and inclination angle m1 is limited, make corresponding parallel opposite side 2-3 form plane with parallel opposite side 1-3 after stop block 2-1 slightly rotates very soon and fit, 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 pull bar work.
As shown in Figure 4, in like manner, when direct current generator reverses, motor shaft 3-1 drives stop block 2-1 to rotate, because the margin of inclination angle n2 and inclination angle n1 is limited, make corresponding parallel opposite side 2-4 form plane with parallel opposite side 1-4 after stop block 2-1 slightly rotates very soon to fit, what reduce to drive when rotating is stressed, stressed when namely reducing starting, thus easily can realize the No Load Start after motor power-off, after motor torque promotes, drive pull bar work.
Claims (3)
1. the worm screw linkage structure driving refrigerator automatically to select ice device motor No Load Start, comprise worm screw (1-1), stop block (2-1), motor shaft (3-1), described worm screw (1-1) offers attachment hole (1-2), described stop block (2-1) offers axis hole (2-2), described motor shaft (3-1) and described axis hole (2-2) interference fit, described stop block (2-1) and described attachment hole (1-2) Spielpassung, is characterized in that:
Described attachment hole (1-2) is convex polygon, and there are two groups of parallel opposite side (1-3,1-4), each limit of described parallel opposite side (1-3,1-4) is in four quadrants of XY plane, and the acute included angle that described parallel opposite side (1-3,1-4) is formed with X-axis is respectively m1, n1;
Described stop block (2-1) has the corresponding parallel opposite side (2-3,2-4) corresponding with described parallel opposite side (1-3,1-4), and the acute included angle that the parallel opposite side of described correspondence (2-3,2-4) is formed with X-axis is respectively m2, n2;
Described inclination angle m2 is less than described inclination angle m1, and described inclination angle n2 is less than described inclination angle n1.
2. drive refrigerator according to claim 1 selects the worm screw linkage structure of ice device motor No Load Start automatically, it is characterized in that: described inclination angle m1 equals described inclination angle n1.
3. drive refrigerator according to claim 1 selects the worm screw linkage structure of ice device motor No Load Start automatically, it is characterized in that: described inclination angle m1, described inclination angle n1 are all not less than 30 ° and are not more than 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520669501.9U CN204921937U (en) | 2015-08-31 | 2015-08-31 | Drive non -loaded worm connection structure who starts of automatic selection ice ware motor of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520669501.9U CN204921937U (en) | 2015-08-31 | 2015-08-31 | Drive non -loaded worm connection structure who starts of automatic selection ice ware motor of refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921937U true CN204921937U (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520669501.9U Active CN204921937U (en) | 2015-08-31 | 2015-08-31 | Drive non -loaded worm connection structure who starts of automatic selection ice ware motor of refrigerator |
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| CN (1) | CN204921937U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179658A (en) * | 2015-08-31 | 2015-12-23 | 江苏凯德电控科技有限公司 | Worm connecting structure for driving non-loaded starting of motor of automatic ice chooser of refrigerator |
-
2015
- 2015-08-31 CN CN201520669501.9U patent/CN204921937U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179658A (en) * | 2015-08-31 | 2015-12-23 | 江苏凯德电控科技有限公司 | Worm connecting structure for driving non-loaded starting of motor of automatic ice chooser of refrigerator |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |