CN2791415Y - Matching structure of drive nut and magnetic rotor - Google Patents
Matching structure of drive nut and magnetic rotor Download PDFInfo
- Publication number
- CN2791415Y CN2791415Y CN 200520101335 CN200520101335U CN2791415Y CN 2791415 Y CN2791415 Y CN 2791415Y CN 200520101335 CN200520101335 CN 200520101335 CN 200520101335 U CN200520101335 U CN 200520101335U CN 2791415 Y CN2791415 Y CN 2791415Y
- Authority
- CN
- China
- Prior art keywords
- nut
- magnet rotor
- wall
- hypomere
- utility
- 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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Abstract
The utility model relates to a matching structure of a driving nut and a magnetic rotor. The existing nut forms a cylindrical shape, the outer wall of the nut is completely contacted with the magnetic rotor, the existing nut can be shrunk and deformed after fixed by injection molding, the precision of screw threads is influenced, the action performance of a valve body is caused to be unstable and the valve body can be moved occasionally, and the consistency is poor when the existing nut is produced. The utility model comprises a nut and a magnetic rotor which is matched with the nut, and the inner wall of the lower section of the nut is provided with screw threads. The utility model is characterized in that a cavity part is arranged between the outer wall of the lower section of the nut and the magnetic rotor. The utility model not only improves the reliability of the fixed driving nut but also prevents the deformation of the screw threads, and the stability of the action performance of the valve body is efficiently ensured.
Description
Technical field
The utility model relates to the structure in electric expansion valve or the valve-like, the cooperating structure of specifically a kind of transmission nut and magnet rotor.
Background technique
Electric expansion valve is made up of valve body and coil, give the coil break-make continuous impulsive current, tooth is in coil extremely gone up the magnetic pole that produces alternate, thereby the permanent magnet rotor rotation in the driving valve body, outside thread and the screw-internal thread fit that is fitted in the transmission nut on the valve seat by screw mandrel, convert moving up and down of needle to, thereby control valve port opening.Wherein, the outside thread quality requirement of the internal thread of transmission nut and screw mandrel is very high, and its quality condition directly influences the performance and the life-span of electric expansion valve.
In existing some electric expansion valve or valve-like, nut is injection-moulded in fully with magnet rotor, and the relative screw mandrel of the material of transmission nut is softer, be generally copper, more yielding, and the reliability of nut after being fixed with prevent that the screw thread contraction deformation from being a pair of contradiction, existing nut is cylindrical, nut outer wall contacts fully with magnet rotor, being injection molding can contraction deformation after fixing, has influenced the precision of screw thread, causes valve body performance instability, motionless when time thes be moving, conformity is poor during production.
The model utility content
Technical problem to be solved in the utility model is to overcome the defective that above-mentioned prior art exists, a kind of reliability that can improve after nut is fixed is provided, can effectively reduce the nut of screw thread distortion and the cooperating structure of magnet rotor again, to guarantee the stability of valve body performance.
For this reason, the technical solution adopted in the utility model is as follows: the cooperating structure of transmission nut and magnet rotor, comprise nut and the magnet rotor that is mated, nut hypomere inwall has screw thread, it is characterized in that being provided with a cavity portion between the outer wall of nut hypomere and magnet rotor.When transmission nut to be injection-moulded in magnet rotor, cavity portion reduces the nut hypomere and contacts (not contact fully between the two) with the deformability of magnet rotor, substantially do not influence the shape and the dimensional accuracy that are positioned at the screw thread on the nut hypomere inwall, guaranteed the stability of valve body performance.
The cooperating structure of described transmission nut and magnet rotor, cavity portion is located at the outer wall place of nut hypomere; Cavity portion be located at nut hypomere outer wall over against the magnet rotor place; The part of cavity portion be located at nut hypomere outer wall over against the magnet rotor place, another part is located at the outer wall place of nut hypomere.More than, all reached the purpose of this utility model between nut and magnet rotor for three kinds of structural types of cavity portion are set.
The cooperating structure of described transmission nut and magnet rotor, cavity portion ringwise, its lower ending opening, length makes the shape of whole section screw thread and dimensional accuracy all unaffected more than or equal to the length of screw thread.When transmission nut to be injection-moulded in magnet rotor, the annular chamber of lower ending opening make nut hypomere and magnet rotor not deforming property contact (not contacting fully) between the two, do not influence the shape and the dimensional accuracy that are positioned at the screw thread on the nut hypomere inwall fully, guaranteed the stability of valve body performance effectively.
The cooperating structure of described transmission nut and magnet rotor, nut epimere outer wall have one with the injection molding joint of magnet rotor, make connection between the two more firm.
The beneficial effects of the utility model are: both improved the reliability after transmission nut is fixed, prevented the distortion of screw thread again, do not influenced the shape and the dimensional accuracy of screw thread fully, guaranteed the stability of valve body performance effectively.
Below in conjunction with drawings and Examples the utility model is further described.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is an another kind of structural representation of the present utility model.
Fig. 3 is another structural representation of the present utility model.
Embodiment
Embodiment 1: the transmission nut as shown in Figure 1 and the cooperating structure of magnet rotor, nut 1 is fixed together with magnet rotor 2 direct injection mouldings, nut 1 hypomere inwall has screw thread 3, this screw thread 3 can cooperate with screw mandrel, the outer wall place of nut 1 hypomere has toroidal cavity portion 4, toroidal cavity portion 4 lower ending openings, its length L 2 is greater than the length L 1 of screw thread 3.Toroidal cavity portion 4 make nut 1 hypomere and magnet rotor 2 not deforming property contact, do not influence the shape and the dimensional accuracy of screw thread 3 fully, guaranteed the stability of valve body performance effectively.
Embodiment 2: as shown in Figure 2, be with embodiment 1 difference: the part of toroidal cavity portion 4 be located at nut hypomere outer wall over against the magnet rotor place, another part is located at the outer wall place of nut hypomere.Nut 1 epimere outer wall is provided with and magnet rotor 2 injection molding joints 5, and joint 5 is designed to be convenient to the flange pulley or the groove structure of injection moulding.
Embodiment 3: as shown in Figure 3, be with embodiment 1 difference: toroidal cavity portion 4 be located at nut 1 hypomere outer wall over against magnet rotor 2 on, nut 1 is fixed with magnet rotor 2 direct injection mouldings.
Claims (6)
1, the cooperating structure of transmission nut and magnet rotor, the magnet rotor (2) that comprises nut (1) and be mated, nut (1) hypomere inwall has screw thread (3), it is characterized in that forming between the outer wall of nut (1) hypomere and magnet rotor (2) a cavity portion (4).
2, the cooperating structure of transmission nut according to claim 1 and magnet rotor is characterized in that described cavity portion (4) is located at the outer wall place of nut (1) hypomere.
3, the cooperating structure of transmission nut according to claim 1 and magnet rotor, it is characterized in that described cavity portion (4) be located at nut (1) hypomere outer wall over against the magnet rotor place.
4, the cooperating structure of transmission nut according to claim 1 and magnet rotor, a part that it is characterized in that described cavity portion (4) be located at nut hypomere outer wall over against the magnet rotor place, another part is located at the outer wall place of nut hypomere.
5, according to the cooperating structure of each described transmission nut and magnet rotor among the claim 1-4, it is characterized in that described cavity portion (4) ringwise, its lower ending opening, length is more than or equal to the length of screw thread (3).
6, according to the cooperating structure of each described transmission nut and magnet rotor among the claim 1-4, it is characterized in that nut (1) epimere outer wall have one with the injection molding joint of magnet rotor (2) (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520101335 CN2791415Y (en) | 2005-03-30 | 2005-03-30 | Matching structure of drive nut and magnetic rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520101335 CN2791415Y (en) | 2005-03-30 | 2005-03-30 | Matching structure of drive nut and magnetic rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2791415Y true CN2791415Y (en) | 2006-06-28 |
Family
ID=36807485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520101335 Expired - Lifetime CN2791415Y (en) | 2005-03-30 | 2005-03-30 | Matching structure of drive nut and magnetic rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2791415Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019196063A1 (en) * | 2018-04-12 | 2019-10-17 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
-
2005
- 2005-03-30 CN CN 200520101335 patent/CN2791415Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019196063A1 (en) * | 2018-04-12 | 2019-10-17 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| KR20200119288A (en) * | 2018-04-12 | 2020-10-19 | 제지앙 둔안 아트피셜 인바이런먼트 컴퍼니 리미티드 | Electronic expansion valve |
| KR102335760B1 (en) | 2018-04-12 | 2021-12-06 | 제지앙 둔안 아트피셜 인바이런먼트 컴퍼니 리미티드 | electronic expansion valve |
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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: 20150330 Granted publication date: 20060628 |