CN215990537U - Linear reciprocating motor permanent magnet assembly - Google Patents
Linear reciprocating motor permanent magnet assembly Download PDFInfo
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- CN215990537U CN215990537U CN202122481324.XU CN202122481324U CN215990537U CN 215990537 U CN215990537 U CN 215990537U CN 202122481324 U CN202122481324 U CN 202122481324U CN 215990537 U CN215990537 U CN 215990537U
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- permanent magnet
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- reciprocating motor
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Abstract
The utility model relates to the field of linear motors, in particular to a permanent magnet assembly of a linear reciprocating motor. The utility model has the advantages that: according to the permanent magnet assembly of the linear reciprocating motor, the fiber layer is arranged on the outer side of the permanent magnet, so that the permanent magnet can be well fixed, the permanent magnet can be effectively prevented from falling off and peeling off, an anti-falling structure is not required to be additionally arranged, the permanent magnet assembly can be realized only through the fiber layer, compared with the prior art, the equipment cost and the assembly difficulty cannot be increased, and the problems of air gap increase, motor efficiency reduction and the like cannot be caused.
Description
Technical Field
The utility model relates to the field of linear motors, in particular to a permanent magnet assembly of a linear reciprocating motor.
Background
The moving magnet type structure is a common one in a linear reciprocating motor, and has the characteristics of compact structure and high efficiency. In a linear reciprocating motor with a moving magnet structure, the magnet structure is usually processed by a permanent magnet made of rare earth materials according to a certain size and shape, a permanent magnet assembly of the structure of the common moving magnet linear reciprocating motor comprises the permanent magnet and a magnet fixing support, the permanent magnet assembly is arranged in an annular gap of an inner magnetic pole and an outer magnetic pole, a current-carrying coil contained in the outer magnetic pole can generate an alternating magnetic field under the condition of electrification and drives the permanent magnet assembly to axially reciprocate in the annular gap, when the permanent magnet assembly is applied to a Stirling refrigerator, the permanent magnet assembly is usually rigidly connected with a piston assembly of the Stirling refrigerator, and the permanent magnet assembly drives the piston assembly to move in a cylinder to output compression work.
The permanent magnet is a rare earth permanent magnet material, generally formed by a sintering process, has high hardness but low structural strength, and is easy to peel and peel, and the problems are improved by adopting a metal plating method in subsequent production, but the permanent magnet is used as a power output structure of a moving magnet type linear motor, the strength of the permanent magnet is not enough to drive moving parts such as a piston and the like to reciprocate, so the permanent magnet is usually fixed on a metal supporting structure, the supporting structure drives the piston to move, and the fixing mode of the permanent magnet and a supporting frame is usually more in glue, so that the problem that the permanent magnet falls off from the supporting structure because the bonding strength is lower than a designed value in the use process can be caused, and the motor can directly fail; in addition, the permanent magnets are processed into tile type for convenient mechanical processing and magnetization, and the linear reciprocating motor requires that all the permanent magnets are the same-direction magnetic steel.
To above-mentioned problem, some anti-disengaging structure have also been proposed among the prior art, for example the chinese utility model patent of publication number CN201478896U discloses a permanent magnet synchronous motor rotor magnet steel anti-disengaging mechanism, the chinese utility model patent of publication number CN203278444U discloses a magnet steel anti-disengaging device, nevertheless to moving the reciprocal linear electric motor of magnetism formula, the anti-disengaging structure of extra increase has firstly increased equipment cost and the assembly degree of difficulty, secondly the anti-disengaging structure of increase can lead to moving magnetism formula motor "air gap" increase, motor efficiency descends.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows:
in the prior art, the permanent magnet in the linear reciprocating motor is easy to fall off and peel off, and equipment cost and assembly difficulty are increased when an anti-falling structure is additionally arranged, and the technical problems of air gap increase and motor efficiency reduction are caused.
The utility model solves the technical problems through the following technical means: the utility model provides a linear reciprocating motor permanent magnet subassembly, includes the magnet fixed bolster, the outside of magnet fixed bolster is provided with the permanent magnet, the outside of permanent magnet is provided with the fibrous layer.
According to the permanent magnet assembly of the linear reciprocating motor, the fiber layer is arranged on the outer side of the permanent magnet, so that the permanent magnet can be well fixed, the permanent magnet can be effectively prevented from falling off and peeling off, an anti-falling structure is not required to be additionally arranged, the permanent magnet assembly can be realized only through the fiber layer, compared with the prior art, the equipment cost and the assembly difficulty cannot be increased, and the problems of air gap increase, motor efficiency reduction and the like cannot be caused.
Preferably, the magnet fixing bracket is of a cylindrical structure.
Preferably, the outer side of the magnet fixing support is provided with a ring groove, and the permanent magnet is installed in the ring groove.
Preferably, one end of the magnet fixing bracket is provided with a mounting hole.
Preferably, the end of the magnet fixing bracket is provided with a flange protruding towards the inner side, and the mounting hole is formed in the flange.
Preferably, the permanent magnet is bonded with the magnet fixing support.
Preferably, the magnet fixing support and the permanent magnet are both of cylindrical structures.
Preferably, the permanent magnets are arranged in a plurality of numbers, and all the permanent magnets are sequentially arranged along the outer side of the magnet fixing support.
Optimally, the fiber layer comprises fiber filaments wound outside the permanent magnet;
the fiber yarns and the permanent magnets are bonded through glue.
During actual processing, the fiber yarns are dipped and then wound on the outer side of the permanent magnet, and the fiber yarns and the permanent magnet are bonded through glue, so that a fiber layer is formed.
Preferably, the fiber layer covers the permanent magnet and the outer side of the magnet fixing bracket.
The fiber layer covers the permanent magnet and the outer side of the magnet fixing support, the permanent magnet and the magnet fixing support can be effectively connected through the fiber layer to indirectly form a whole, and the overall structural strength is further improved.
The utility model has the advantages that:
1. according to the permanent magnet assembly of the linear reciprocating motor, the fiber layer is arranged on the outer side of the permanent magnet, so that the permanent magnet can be well fixed, the permanent magnet can be effectively prevented from falling off and peeling off, an anti-falling structure is not required to be additionally arranged, the permanent magnet assembly can be realized only through the fiber layer, compared with the prior art, the equipment cost and the assembly difficulty cannot be increased, and the problems of air gap increase, motor efficiency reduction and the like cannot be caused.
2. During actual processing, the fiber yarns are dipped and then wound on the outer side of the permanent magnet, and the fiber yarns and the permanent magnet are bonded through glue, so that a fiber layer is formed.
3. The fiber layer covers the permanent magnet and the outer side of the magnet fixing support, the permanent magnet and the magnet fixing support can be effectively connected through the fiber layer to indirectly form a whole, and the overall structural strength is further improved.
Drawings
FIG. 1 is a cross-sectional view of a permanent magnet assembly of a linear reciprocating motor in an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a magnet mounting bracket in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a permanent magnet assembly of a linear reciprocating motor according to an embodiment of the present invention in practical use; wherein the content of the first and second substances,
a magnet fixing bracket-21; ring groove-211; mounting holes-212; flange-213;
a permanent magnet-22;
fiber layer-23;
a cylinder body-241; a piston-242; an inner stator-243; an outer stator-244; a coil-245.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a permanent magnet assembly for a linear reciprocating motor includes a magnet fixing bracket 21, a permanent magnet 22, and a fiber layer 23.
As shown in fig. 1, a permanent magnet 22 is disposed outside the magnet fixing bracket 21, and a fiber layer 23 is disposed outside the permanent magnet 22.
Specifically, as shown in fig. 2, the magnet fixing bracket 21 has a cylindrical structure. The outer side of the magnet fixing bracket 21 is provided with a ring groove 211, and the permanent magnet 22 is installed in the ring groove 211.
As shown in fig. 1, one end of the magnet fixing bracket 21 is provided with a mounting hole 212. Specifically, the end of the magnet fixing bracket 21 is provided with a flange 213 protruding inward, and the mounting hole 212 is provided in the flange 213. The mounting holes 212 are round holes, the axial direction of the round holes is parallel to the axial line of the magnet fixing support 21, and the mounting holes 212 are uniformly distributed along the circumferential direction of the magnet fixing support 21.
The permanent magnet 22 and the magnet fixing bracket 21 are bonded through glue. The magnet fixing support 21 and the permanent magnet 22 are both cylindrical structures.
Or, a plurality of permanent magnets 22 are arranged, and all the permanent magnets 22 are arranged in sequence along the outer side of the magnet fixing bracket 21. I.e., the permanent magnet 22 has a circular arc-shaped sheet structure. All the permanent magnets 22 are sequentially arranged along the outer side of the magnet fixing bracket 21 to form a cylindrical structure.
The fiber layer 23 comprises fiber filaments wound outside the permanent magnet 22; the fiber yarns are bonded with each other and the permanent magnet 22 through glue. The fiber layer 23 covers the permanent magnet 22 and the outside of the magnet fixing bracket 21.
Specifically, the forming method of the fiber layer 23 in this embodiment is as follows: and (3) dipping the fiber yarns, winding the fiber yarns on the outer sides of the permanent magnet 22 and the magnet fixing support 21, and bonding the fiber yarns with the fiber yarns, the permanent magnet 22 and the magnet fixing support 21 through glue after the glue is solidified. The fiber can be metal wire, nylon, etc.
As shown in fig. 3, in the actual application, the linear reciprocating motor permanent magnet assembly of the present invention is mainly used in a linear motor of a stirling cooler, in the actual installation, a piston 242 is slidably installed in a cylinder 241, an inner stator 243 is installed outside the cylinder 241, an outer stator 244 is installed outside the inner stator 243, a gap is formed between the inner stator 243 and the outer stator 244, the linear reciprocating motor permanent magnet assembly of the present invention is inserted into the gap, the permanent magnet assembly is connected with the end of the piston 242 through an installation hole 212, and a coil 245 is further installed in an inner side ring groove of the outer stator 244, so that in the actual operation, the reciprocating linear motion of the permanent magnet assembly can drive the piston 242 to move together, thereby providing power for the stirling cooler.
The working principle is as follows:
as shown in fig. 1, the fiber layer 23 is arranged on the outer side of the permanent magnet 22 of the linear reciprocating motor permanent magnet assembly, so that the permanent magnet 22 can be well fixed, the permanent magnet can be effectively prevented from falling off and peeling off, an anti-falling structure is not required to be additionally arranged, the permanent magnet assembly can be realized only by the fiber layer 23, compared with the prior art, the equipment cost and the assembly difficulty cannot be increased, and the problems of air gap increase, motor efficiency reduction and the like cannot be caused.
During actual processing, the fiber yarns are dipped and then wound on the outer side of the permanent magnet 22, and the fiber yarns and the permanent magnet 22 are bonded through glue, so that the fiber layer 23 is formed.
The fiber layer 23 covers the permanent magnet 22 and the outer side of the magnet fixing support 21, the permanent magnet 22 and the magnet fixing support 21 can be effectively connected through the fiber layer 23 to indirectly form a whole, and the overall structural strength is further improved.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a linear reciprocating motor permanent-magnet components which characterized in that: the magnetic fixing device comprises a magnet fixing support (21), wherein a permanent magnet (22) is arranged on the outer side of the magnet fixing support (21), and a fiber layer (23) is arranged on the outer side of the permanent magnet (22).
2. The linear reciprocating motor permanent magnet assembly according to claim 1, wherein: the magnet fixing bracket (21) is of a cylindrical structure.
3. The linear reciprocating motor permanent magnet assembly according to claim 1, wherein: the outside of magnet fixed bolster (21) is provided with annular groove (211), permanent magnet (22) are installed in annular groove (211).
4. The linear reciprocating motor permanent magnet assembly according to claim 1, wherein: one end of the magnet fixing support (21) is provided with a mounting hole (212).
5. The linear reciprocating motor permanent magnet assembly according to claim 4, wherein: the end of the magnet fixing bracket (21) is provided with a flange (213) protruding towards the inner side, and the mounting hole (212) is arranged on the flange (213).
6. The linear reciprocating motor permanent magnet assembly according to claim 1, wherein: the permanent magnet (22) is bonded with the magnet fixing support (21).
7. The linear reciprocating motor permanent magnet assembly according to claim 1, wherein: the magnet fixing support (21) and the permanent magnet (22) are both of cylindrical structures.
8. The linear reciprocating motor permanent magnet assembly according to claim 1, wherein: the permanent magnets (22) are arranged in a plurality of numbers, and all the permanent magnets (22) are sequentially arranged along the outer side of the magnet fixing support (21).
9. The linear reciprocating motor permanent magnet assembly according to claim 1, wherein: the fiber layer (23) comprises fiber filaments wound outside the permanent magnet (22);
the fiber yarns and the permanent magnets (22) are bonded through glue.
10. The linear reciprocating motor permanent magnet assembly according to any one of claims 1 to 9, wherein: the fiber layer (23) covers the permanent magnet (22) and the outer side of the magnet fixing support (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122481324.XU CN215990537U (en) | 2021-10-14 | 2021-10-14 | Linear reciprocating motor permanent magnet assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122481324.XU CN215990537U (en) | 2021-10-14 | 2021-10-14 | Linear reciprocating motor permanent magnet assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215990537U true CN215990537U (en) | 2022-03-08 |
Family
ID=80569545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122481324.XU Active CN215990537U (en) | 2021-10-14 | 2021-10-14 | Linear reciprocating motor permanent magnet assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215990537U (en) |
-
2021
- 2021-10-14 CN CN202122481324.XU patent/CN215990537U/en active Active
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