CN2874171Y - Connection structure of magnetic rotor and guard rod - Google Patents
Connection structure of magnetic rotor and guard rod Download PDFInfo
- Publication number
- CN2874171Y CN2874171Y CN 200620100441 CN200620100441U CN2874171Y CN 2874171 Y CN2874171 Y CN 2874171Y CN 200620100441 CN200620100441 CN 200620100441 CN 200620100441 U CN200620100441 U CN 200620100441U CN 2874171 Y CN2874171 Y CN 2874171Y
- Authority
- CN
- China
- Prior art keywords
- lever
- metal core
- core piece
- magnet rotor
- welding
- 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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- Laser Beam Processing (AREA)
Abstract
This utility model relates to a connecting mechanism for a magnetic rotor and a gear lever, characterized in that: the metallic core unit of the aforesaid magnetic rotor is connected with the gear lever in muff coupling; laser welding is applied to the contacting part between the two parts. This utility model has the advantages of: little limit on the welding space; little heat generation; stable and reliable welding quality; excellent welding quality; simple production process; assurance for the quality consistency of products in same batch.
Description
Technical field
The utility model relates to the internal structure of electric expansion valve, the linkage structure of specifically a kind of magnet rotor and lever.
Background technique
Electric expansion valve is the typical products that stepper motor is used, and is made up of valve body I and coil II, as shown in Figure 1.Give coil II break-make continuous impulsive current, make the tooth in the coil extremely go up the magnetic pole that produces alternate, thereby drive the permanent magnet rotor 1 ' rotation in the valve body I, by magnet rotor 1 ' metal core piece 2 ' the screw thread transmission, convert moving up and down of needle to, thereby change the valve port circulation area, realize from taking over the accurate control of A to the flow of taking over B (or from B to A).Simultaneously, limit the stroke of permanent magnet rotor 1 ' up and down by the slip ring that slides in the limiting rail road on stopper and lever 3 ' cooperate.Permanent magnet rotor 1 ' effect be under coil II drives, produce circumferentially and rotate, the metal core piece 2 by inside ' self screw thread becomes axially straight moving.In case lever and metal core piece 2 ' connection lost efficacy, can cause the serious consequence of electric expansion valve function total failure, therefore, lever and metal core piece 2 ' bond strength be the assurance of product reliability.
Because it is light and handy that industrial trend requires electric expansion valve to pursue, therefore, permanent magnet rotor 1 ' employing Rb-Fe-B material, implementation structure miniaturization.The consequence that the magnet rotor miniaturization brings is to bring difficulty to lever and permanent magnet rotor 1 ' interior metal core piece 2 ' connections, and the bind mode of riveting and being press-fitted is limited because of product space, is difficult to realization.Existing lever and metal core piece 2 ' connect by resistance welding, the characteristics of resistance welding are that heating power makes the metal molten combination.Because permanent magnet rotor 1 ' existence, butt welding sending and receiving heat is very sensitive, metal core piece 2 in limited space ' with lever heating fusing, and do not make in-plant magnet heating cracking, limited part property of filling of welding.The quality of resistance welds influence factor is more, technological management is complicated during production, as metalwork batches of materials quality, welding equipment performance, welding electrode material, size, electrode pressure during welding, the electric current of welding, is produced the quality of resistance welds fluctuation in enormous quantities greatly at time of welding or the like, can degree of inspection poor, be not suitable for the high occasion of reliability requirement.
The model utility content
The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome the big defective of quality of resistance welds fluctuation that prior art exists, and a kind of novel magnet rotor and the linkage structure of lever are provided, for this reason, the utility model by the following technical solutions:
The linkage structure of a kind of magnet rotor and lever is characterized in that the metal core piece of described magnet rotor and lever connect in the mode of socket, carries out laser bonding at the contacting part of the two socket.
As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature:
The upper end of described metal core piece is provided with boss, and the lower end of described lever is provided with the encirclement portion that is enclosed within on the described boss.
The upper end of described metal core piece is provided with recess, and the lower end of described lever is provided with the besieged portion that is surrounded by described recess.
The utility model is by connecting the metal core piece of magnet rotor and the lever mode with socket, and carry out laser bonding at the contacting part of the two socket, have the welding spatial constraints few, it is little to generate heat, and welding quality stable is reliable, the welding quality inspectability is good, production technology is simple, guarantee batch conforming advantage of product.
Below in conjunction with drawings and Examples the utility model is further described.
Description of drawings
Fig. 1 is the structural representation of existing electric expansion valve.
Fig. 2 a, 2b are a kind of structural representation of lever of the present utility model, and wherein Fig. 2 b is the plan view of Fig. 2 a.
Fig. 2 c, 2d are the structural representation of the corresponding metal core piece of lever of the present utility model and Fig. 2 a, 2b, and wherein Fig. 2 d is the plan view of Fig. 2 c.
Fig. 2 e, 2f are the lever of Fig. 2 a, 2b, 2c, 2d and the structural representation of metal core piece socket.
Fig. 3 a, 3b are the another kind of structural representation of lever of the present utility model, and wherein Fig. 3 b is the plan view of Fig. 3 a.
Fig. 3 c, 3d are the structural representation of the corresponding metal core piece of lever of the present utility model and Fig. 3 a, 3b, and wherein Fig. 3 d is the plan view of Fig. 3 c.
Fig. 3 e, 3f are the lever of Fig. 3 a, 3b, 3c, 3d and the structural representation of metal core piece socket.
Fig. 4 a, 4b are another structural representation of lever of the present utility model, and wherein Fig. 4 b is the plan view of Fig. 4 a.
Fig. 4 c, 4d are the structural representation of the corresponding metal core piece of lever of the present utility model and Fig. 4 a, 4b, and wherein Fig. 4 d is the plan view of Fig. 4 c.
Fig. 4 e, 4f are the lever of Fig. 4 a, 4b, 4c, 4d and the structural representation of metal core piece socket.
Embodiment
As Fig. 2 a～2f, the upper end of metal core piece 22 is provided with boss 22a, and the lower end of lever 23 is provided with the part-annular encirclement 23a of portion, and the 23a of portion is enclosed within on the boss 22a with this part-annular encirclement, and laser bonding portion 24 is the contacting part of socket.
As Fig. 3 a～3f, there are a circular inner hole 32a and a translot 32b in the upper end of metal core piece 32, and the circular inner hole 32a on lever 33 circular outer diameter 33a and the metal core piece fits, and 34 in laser beam welding enforcement portion is the circular arc part contacting part; Translot 32b on the metal core piece is in order to avoid the lever bending part, to make things convenient for both to fit.
As Fig. 4 a～4f, the upper end of metal core piece 42 is provided with boss 42a, and the lower end of lever 43 is provided with the part-annular encirclement 43a of portion, and the 43a of portion is enclosed within on the boss 42a with this part-annular encirclement, and laser bonding portion 44 is the contacting part of socket.
Claims (3)
1, the linkage structure of a kind of magnet rotor and lever is characterized in that the metal core piece of described magnet rotor and lever connect in the mode of socket, carries out laser bonding at the contacting part of the two socket.
2, the linkage structure of magnet rotor according to claim 1 and lever is characterized in that the upper end of described metal core piece is provided with boss, and the lower end of described lever is provided with the encirclement portion that is enclosed within on the described boss.
3, the linkage structure of magnet rotor according to claim 1 and lever is characterized in that the upper end of described metal core piece is provided with recess, and the lower end of described lever is provided with the besieged portion that is surrounded by described recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620100441 CN2874171Y (en) | 2006-01-15 | 2006-01-15 | Connection structure of magnetic rotor and guard rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620100441 CN2874171Y (en) | 2006-01-15 | 2006-01-15 | Connection structure of magnetic rotor and guard rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2874171Y true CN2874171Y (en) | 2007-02-28 |
Family
ID=37780769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620100441 Expired - Lifetime CN2874171Y (en) | 2006-01-15 | 2006-01-15 | Connection structure of magnetic rotor and guard rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2874171Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776171A (en) * | 2010-02-26 | 2010-07-14 | 浙江盾安禾田金属有限公司 | Connection structure of motion guide rod and rotor and electronic expansion valve |
| CN102252121A (en) * | 2010-05-21 | 2011-11-23 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN103470842A (en) * | 2013-09-30 | 2013-12-25 | 苏州优冷机电科技有限公司 | Magnetic rotor assembly and electronic expansion valve with magnetic rotor assembly |
-
2006
- 2006-01-15 CN CN 200620100441 patent/CN2874171Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776171A (en) * | 2010-02-26 | 2010-07-14 | 浙江盾安禾田金属有限公司 | Connection structure of motion guide rod and rotor and electronic expansion valve |
| CN101776171B (en) * | 2010-02-26 | 2012-09-26 | 浙江盾安禾田金属有限公司 | Connection structure of motion guide rod and rotor and electronic expansion valve |
| CN102252121A (en) * | 2010-05-21 | 2011-11-23 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN103470842A (en) * | 2013-09-30 | 2013-12-25 | 苏州优冷机电科技有限公司 | Magnetic rotor assembly and electronic expansion valve with magnetic rotor assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070228 |
|
| EXPY | Termination of patent right or utility model |