CN102213322B - Magnetic rotor component and electronic expansion valve using magnetic rotor component - Google Patents
Magnetic rotor component and electronic expansion valve using magnetic rotor component Download PDFInfo
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- CN102213322B CN102213322B CN201010147560.1A CN201010147560A CN102213322B CN 102213322 B CN102213322 B CN 102213322B CN 201010147560 A CN201010147560 A CN 201010147560A CN 102213322 B CN102213322 B CN 102213322B
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- link
- rotor component
- magnetic rotor
- depressed part
- lower recess
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Abstract
The invention belongs to the field of control of refrigeration cycle systems and particularly relates to a magnetic rotor component and an electronic expansion valve using the magnetic rotor component. The magnetic rotor component comprises a cylindrical magnetic body (3), a screw rod (2) and an annular connecting piece (1) which is fixedly connected with the magnetic body (3) and the screw rod (2) respectively to form a whole and has an upper end part and a lower end part, and is characterized in that: upper concave parts (11) are formed on the upper end part of the connecting piece (1); and lower concave parts (12) are formed on the lower end part of the connecting piece (1). By the invention, the problem that the connecting piece cannot be demoulded directly during machining because an annular slot is formed in the middle of the peripheral part of the connecting piece in the prior art can be avoided; and an opening slot formed on the peripheral part of the connecting piece is connected with the peripheral part through an inclined surface and a circular arc, so the flowability of materials is improved during combination of the connecting piece and the magnetic body and the breakage problem possibly caused by a concentrated stress can be avoided.
Description
Technical field
The invention belongs to cooling cycle system control field, be specifically related to the electric expansion valve of a kind of magnetic rotor component and this magnetic rotor component of use.
Background technique
Electric expansion valve is rotated by the magnetic rotor component of pulse input power control step motor, and magnetic rotor component makes to be placed in epitrochanterian needle by screw thread transmission and does axial motion, thereby plays the fluid flow size effect of controlling by valve.Conventionally, magnet rotor and screw rod are connected in one by injection molding, and injection molding pressure and temperature is higher, very large on the impact of screw flight coaxality and fit dimension, and that coaxiality deviation directly can cause between magnet rotor and spool is stuck, the regulating action of valve was lost efficacy, and this Placement has a strong impact on performance and the yield rate of product.In addition, the screw rod being connected with rotor of the prior art all forms by smear metal, and this method is also wasted material, efficiency is low.For this reason, publication number is that 200820132647 Chinese utility model patent discloses a kind of improved technological scheme, i.e. structure as shown in Figure 1, between the screw rod 2 ' of electric expansion valve and magnetic 3 ', link 1 ' is set, avoids the impact of Product Precision and coaxality etc. that the direct injection molding kind of screw rod causes and reach the effect of saving material.
In its disclosed structure, as the universal design design of prior art, the horizontal groove 11 ' that longitudinal breach of axial perforation is set and circumferentially connects at link 1 ', occurs that to prevent from coordinating between rear connectors 1 ' and magnetic 3 ' rotation to axial and axis move.But, because magnetic is the material that fragility is strong, ductility is poor (as composition metal etc.), in forming process, affect flowing and filling effect to groove of material, may produce stress and concentrate and cause fracture.Simultaneously such structure, link, as nonmetallic material molding and forming, cannot directly be gone up bottom knockout, must consider horizontal demoulding piece demoulding.In view of this,, urgently by the improvement of technological scheme, guarantee the reliability of link and magnetic combination.
Summary of the invention
For above-mentioned defect, the technical problem that the present invention solves is, the electric expansion valve of a kind of magnetic rotor component and this magnetic rotor component of use is provided, can avoid fragility is strong, ductility is poor magnetic material with insert-molding process in, the problem of the mobile difference of material, concentrate with stress the magnetic rotor component breakage problem causing, make inserts be easy to machine shaping simultaneously.
Magnetic rotor component provided by the invention, comprise magnetic cylindraceous, screw rod, respectively with described magnetic and the affixed shape all-in-one-piece of the screw rod circular connector with upper end portion and underpart, it is characterized in that, be provided with depressed part in the upper end portion of described link, be provided with lower recess portion in the underpart of described link.
Further, on the basis of technique scheme, described upper depressed part or lower recess portion are symmetrical with respect to the axle center of link.
Further, on the basis of technique scheme, described upper depressed part and the axially up and down relative arrangement of lower recess portion at link.Preferably, link axially relatively arrange up and down a pair of on depressed part and the distance between the bottom end of lower recess portion be between 0.2-0.4 times of distance between upper end portion and the underpart of link.
Further, on technique scheme basis, described upper depressed part and lower recess portion are along the peripheral part alternative arrangement of link.
Preferably, the upper depressed part arranging on described link is identical with the number of lower recess portion, is specially each 3-8; The number of the up/down depressed part further, arranging on described link is each 4-6;
Further, on technique scheme basis, on described screw rod with ring screw groove.
Further, the upper depressed part/lower recess portion on described link is filled by the material of described magnetic;
Preferably, described upper depressed part or lower recess portion are the combination of trapezoidal, circular arc, triangle or trapezoidal and circular arc in the horizontal cross section of link;
Further, between described upper depressed part or the side of lower recess portion and the peripheral part of described link, be connected by arc transition.
Preferably, the bottom end of described upper depressed part or lower recess portion is inclined-plane.
Preferably, described upper depressed part or the bottom end of lower recess portion and the peripheral part of described link are connected by arc transition.
Electric expansion valve provided by the invention, comprise the magnetic rotor component moving with respect to described valve port with the valve body of fluid introducing port and export mouth, with the airtight cover body being connected of described valve body, the valve seat with valve port, needle, the described needle of drive, it is characterized in that, described magnetic rotor component uses above-described magnetic rotor component technological scheme.
The electric expansion valve of magnetic rotor component provided by the invention and this magnetic rotor component of use, be provided with depressed part in the upper end portion of link, be provided with lower recess portion in the underpart of described link, avoid offering circular groove in the centre of link peripheral part in prior art, caused the problem that link can not direct demold in course of working; And up/down depressed part is connected with peripheral part with circular arc by inclined-plane, make link and magnetic in anabolic process, material flowability is improved, and has avoided stress to concentrate the breakage problem that may cause.
Brief description of the drawings
Fig. 1: the magnetic rotor component structural representation of prior art;
Fig. 2: the electric expansion valve embodiment schematic diagram that the present invention provides;
Fig. 3: the magnetic rotor component structural representation of electric expansion valve in Fig. 2;
Fig. 4: the plan view of the link in Fig. 3 after assembling screw rod;
Fig. 5: the plan view of the link in Fig. 3 after assembling screw rod;
Fig. 6: the side view of the link in Fig. 3 after assembling screw rod;
Fig. 7: the plan view of link the second embodiment that the present invention provides after assembling screw rod;
Fig. 8: the plan view of the link in Fig. 7 after assembling screw rod;
Fig. 9: the worm's eye view of the link in Fig. 7 after assembling screw rod;
Figure 10: the side view of the link in Fig. 7 after assembling screw rod;
Figure 11: the plan view of the link that the present invention provides the 3rd embodiment after assembling screw rod;
Figure 12: the plan view of the link in Figure 11 after assembling screw rod;
Figure 13: the plan view of the link that the present invention provides the 4th embodiment after assembling screw rod;
Figure 14: the plan view of the link in Figure 13 after assembling screw rod;
Figure 15: the plan view of the link that the present invention provides the 5th embodiment after assembling screw rod;
Figure 16: the plan view of the link in Figure 15 after assembling screw rod.
In Fig. 1-Figure 16:
1/1 '/1a/1b/1c/1d-link;
The upper depressed part of 11/11a/11b/11c/11d-;
12/12a/12b/12c/12d-lower recess portion;
11 '-laterally groove, 13-peripheral part;
14-upper end portion, 15-underpart;
16/16a/16b-bottom end, 17/17a-side;
2/2 '-screw rod, 21-ring screw groove;
3/3 '-magnetic; 4-valve body;
41-introducing port, 42-export mouth;
5-cover body;
6-valve seat, 61-valve port;
7-needle, 8-inner chamber;
9-guiding element;
100/100 '-magnetic rotor component.
Embodiment
Illustrate present embodiment below in conjunction with Figure of description.
Fig. 2 is the electric expansion valve embodiment schematic diagram that the present invention provides, Fig. 3 is magnetic rotor component structural representation, Fig. 4 is the plan view of link after assembling screw rod, and Fig. 5 is the plan view of link after assembling screw rod, and Fig. 6 is the side view of link after assembling screw rod.
Referring to Fig. 2 and Fig. 3.The electric expansion valve that the present invention provides comprises the valve body 4 with fluid introducing port 41 and export mouth 42, and cover body 5 is welded to connect and forms an airtight inner chamber 8 with valve body 4.Valve seat 6 with valve port 61 is placed on valve body 4.Magnetic rotor component 100 comprises magnetic 3 and screw rod 2, circular connector 1 respectively with magnetic 3 and the affixed shape all-in-one-piece of screw rod 2 structure.Magnetic rotor component 100 is placed in the inner chamber 8 of electric expansion valve, and needle 7 is enclosed in guiding element 9 and can only moves axially, and after magnetic rotor component 100 rotates, drives needle 7 to move axially to control the fluid flow by the valve port 61 of electric expansion valve with respect to valve port 61.
The connecting part of the link 1 on screw rod 2 is processed with ring screw groove 21, first screw rod 2 and link 1 are injection molded into integrative-structure, using this integral piece as inserts and magnetic cylindraceous 3 global formations, the upper depressed part 11/ lower recess portion 12 on link 1 is filled by magnetic material 3 again.
Referring to Fig. 4, Fig. 5 and Fig. 6.The nonmetallic material that link 1 is loop configuration form, be provided with depressed part 11 on 6 with respect to the axle center symmetry of link 1 in the upper end portion 14 of link 1, be provided with 6 lower recess portions 12 with respect to the axle center symmetry of link 1 in the underpart 15 of link 1, upper depressed part 11 and lower recess portion 12 are non-penetrating groove structure at the axle direction of link 1, and at the axial direction of link 1 peripheral part 13, upper depressed part 11 with lower recess portion 12 in relative arrangement up and down.
In the lateral cross section direction (as shown in Figure 5) of link 1, upper depressed part 11 or lower recess portion 12 trapezium structure for spreading to the peripheral part 13 of link 1, and be connected with peripheral part 13 transition by circular arc R.
In the present embodiment, due to upper depressed part and lower recess portion be arranged to be connected with peripheral part by circular arc trapezoidal, make link and magnetic in anabolic process, material flowability is effectively improved, and has avoided stress to concentrate the breakage problem that may cause; Meanwhile, upper depressed part communicates with the upper end portion of link, and lower recess portion communicates with the underpart of link, has avoided prior art to offer the problem that link that circular groove causes can not direct demold in course of working in the centre of link peripheral part.The needs of intensity after the link 1 that is considered as inserts and magnetic 3 global formations, preferably, distance on every pair between depressed part 11 and the bottom end 16 of lower recess portion 12, be the distance h 2 between upper end portion 14 and the underpart 15 of link 1 0.2-0.4 doubly between, i.e. 0.2h2≤h1≤0.4h2.
Fig. 7 is the plan view of link the second embodiment of providing of the present invention after assembling screw rod, Fig. 8 is the plan view of link after assembling screw rod in this scheme, Fig. 9 is the worm's eye view of link after assembling screw rod, and Figure 10 is the side view of link after assembling screw rod.
Referring to Fig. 7, Fig. 8, Fig. 9 and Figure 10.
In the present embodiment, link 1a is that the nonmetallic material of loop configuration form, be provided with depressed part 11a on 6 with respect to the axle center symmetry of link 1a in the upper end portion 14 of link 1a, be provided with 6 12a of lower recess portion with respect to the axle center symmetry of link 1a in the underpart 15 of link 1a, upper depressed part 11a and the 12a of lower recess portion are non-penetrating groove structure at the axle direction of link 1a.In the lateral cross section direction (as shown in Figure 8 and Figure 9) of link 1a, upper depressed part 11a and the 12a of lower recess portion are the trapezium structure spreading to the peripheral part 13 of link 1a, and are connected with peripheral part 13 transition by circular arc.
Different from aforementioned schemes is, upper depressed part 11a and the 12a of lower recess portion are along peripheral part 13 alternative arrangements of link 1a, like this effect that plays equally aforementioned techniques scheme is set, but further, can be in the situation that keeping link 1a overall structure not expand, the length of oversized slots, intensity after raising link and magnetic global formation.
Figure 11 is the plan view of link the 3rd embodiment that provides of the present invention after assembling screw rod, and Figure 12 is the plan view of link after assembling screw rod in this scheme;
Referring to Figure 11 and Figure 12.Different from the first embodiment's technological scheme, in the lateral cross section direction (as shown in figure 12) of link 1b, upper depressed part 11b and the 12b of lower recess portion are arc-shaped structure.Can certainly adopt the form of triangle or the combination of trapezoidal and circular arc, such effect that plays equally aforementioned techniques scheme that arranges, does not repeat them here.
Figure 13 is the plan view of link the 4th embodiment that provides of the present invention after assembling screw rod, and Figure 14 is the plan view of link after assembling screw rod in this scheme.
Referring to Figure 13 and Figure 14.Different from the first embodiment's technological scheme is, in the present embodiment, on the peripheral part 13 of link 1c, be provided with 4 upper depressed part 11c and 4 12c of lower recess portion with respect to the axle center symmetry of link 1c, upper depressed part 11c is parallel with the end face of link 1c with the bottom end 16a of the 12c of lower recess portion, and is connected with the peripheral part 13 of link 1c by circular arc K.Like this effect that plays equally aforementioned techniques scheme is set, do not repeat them here.
Figure 15 is the plan view of link the 5th embodiment that provides of the present invention after assembling screw rod; Figure 16 is link in this scheme plan view after assembling screw rod.
Referring to Figure 15 and Figure 16.Different from the first embodiment's technological scheme is, in the present embodiment, be provided with depressed part 11 on 4 with respect to the axle center symmetry of link 1 in the upper end portion 14 of link 1d, be provided with 4 lower recess portions 12 with respect to the axle center symmetry of link 1d in the underpart 15 of link 1d, if (number of the up/down depressed part arranging on link is too much or very few, capital affects the combined strength of magnetic rotor component, generally between 3-8, as preferred version, the number of the up/down depressed part arranging on link is respectively 4-6).The bottom end 16b of upper depressed part 11d and the 12d of lower recess portion is inclined-plane.With the end face structure Q at a certain angle of link 1d.Like this effect that plays equally aforementioned techniques scheme is set, do not repeat them here.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (14)
1. a magnetic rotor component, comprise magnetic cylindraceous (3), screw rod (2), respectively with described magnetic (3) and the circular connector (1) of the affixed shape all-in-one-piece of screw rod (2) with upper end portion and underpart, it is characterized in that, be provided with upper depressed part (11) in the upper end portion of described link (1), be provided with lower recess portion (12) in the underpart of described link (1), described upper depressed part (11) and described lower recess portion (12) are non-penetrating groove structure at the axle direction of described link (1), described upper depressed part (11) is respectively 3-8 with the number of described lower recess portion (12).
2. magnetic rotor component according to claim 1, is characterized in that, described upper depressed part (11) or lower recess portion (12) are symmetrical with respect to the axle center of link (1).
3. magnetic rotor component according to claim 1, is characterized in that, described upper depressed part (11) and the axially up and down relative arrangement of lower recess portion (12) at link (1).
4. magnetic rotor component according to claim 3, it is characterized in that, between 0.2-0.4 times of distance h 2 between the upper end portion and the underpart that are link in the axial distance h 1 between relative a pair of upper depressed part (11) and the bottom end of lower recess portion (12) of arranging up and down of described link (1), that is: 0.2h2≤h1≤0.4h2.
5. magnetic rotor component according to claim 1, is characterized in that, described upper depressed part (11) and peripheral part (13) alternative arrangement of described lower recess portion (12) along link (1).
6. magnetic rotor component according to claim 1, is characterized in that, the upper upper depressed part (11) arranging of described link (1) is identical with the number of lower recess portion (12).
7. magnetic rotor component according to claim 6, is characterized in that, the upper upper depressed part (11) arranging of described link (1) and the number of lower recess portion (12) are each 4-6.
8. magnetic rotor component according to claim 1, is characterized in that, described screw rod (2) is upper with ring screw groove (21).
9. magnetic rotor component according to claim 1, is characterized in that, on described link (1) upper depressed part (11) and lower recess portion (12) filled by the material of described magnetic (3).
10. according to the arbitrary magnetic rotor component described in claim 1--9, it is characterized in that, described upper depressed part (11) or lower recess portion (12) are the combination of trapezoidal, circular arc, triangle or trapezoidal and circular arc in the horizontal cross section of link (1).
11. magnetic rotor components according to claim 10, it is characterized in that, the side of described upper depressed part (11) or lower recess portion (12) is connected by arc transition with the peripheral part (13) of described link (1).
12. according to the arbitrary magnetic rotor component described in claim 1--9, it is characterized in that, the bottom end of described upper depressed part (11) or lower recess portion (12) is inclined-plane.
13. according to the arbitrary magnetic rotor component described in claim 1--9, it is characterized in that, the bottom end of described upper depressed part (11) or lower recess portion (12) is connected by arc transition with the peripheral part (13) of described link.
14. 1 kinds of electric expansion valves, comprise with the valve body (4) of fluid introducing port (41) and export mouth (42), with the airtight cover body being connected of described valve body (4) (5), valve seat (6), needle (7) with valve port (61), drive described needle (7) magnetic rotor component (100) mobile with respect to described valve port (61), it is characterized in that, described magnetic rotor component (100) right to use requires the arbitrary magnetic rotor component described in 1--13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010147560.1A CN102213322B (en) | 2010-04-09 | 2010-04-09 | Magnetic rotor component and electronic expansion valve using magnetic rotor component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010147560.1A CN102213322B (en) | 2010-04-09 | 2010-04-09 | Magnetic rotor component and electronic expansion valve using magnetic rotor component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102213322A CN102213322A (en) | 2011-10-12 |
| CN102213322B true CN102213322B (en) | 2014-12-03 |
Family
ID=44744762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010147560.1A Active CN102213322B (en) | 2010-04-09 | 2010-04-09 | Magnetic rotor component and electronic expansion valve using magnetic rotor component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102213322B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821632A (en) * | 2005-02-16 | 2006-08-23 | 株式会社不二工机 | Motor operated valve with reduction gear |
| CN1900565A (en) * | 2005-07-19 | 2007-01-24 | 株式会社不二工机 | Motor-operated valve |
| CN201297424Y (en) * | 2008-08-13 | 2009-08-26 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003056735A (en) * | 2001-08-09 | 2003-02-26 | Fuji Koki Corp | Motor-operated valve |
| JP2004197800A (en) * | 2002-12-17 | 2004-07-15 | Saginomiya Seisakusho Inc | Motor operated valve |
-
2010
- 2010-04-09 CN CN201010147560.1A patent/CN102213322B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821632A (en) * | 2005-02-16 | 2006-08-23 | 株式会社不二工机 | Motor operated valve with reduction gear |
| CN1900565A (en) * | 2005-07-19 | 2007-01-24 | 株式会社不二工机 | Motor-operated valve |
| CN201297424Y (en) * | 2008-08-13 | 2009-08-26 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2003-56735A 2003.02.26 * |
| JP特开2004-197800A 2004.07.15 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102213322A (en) | 2011-10-12 |
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Address after: 312500 Zhejiang city of Shaoxing province Xinchang County Mei Zhu Zhen three flower Mei Zhu Industrial Park Administration Building Patentee after: Zhejiang three flower intelligent control Limited by Share Ltd Address before: 312500 Liquan village of Zhejiang County in Xinchang Province town under Patentee before: Zhejiang Sanhua Group Co., Ltd. |