CN211603421U

CN211603421U - Device for testing withstand voltage of armature

Info

Publication number: CN211603421U
Application number: CN201922208388.5U
Authority: CN
Inventors: 陈荣巧; 周方; 邓贵兵
Original assignee: SHENZHEN KAIZHONG PRECISION TECHNOLOGY CO LTD
Current assignee: SHENZHEN KAIZHONG PRECISION TECHNOLOGY CO LTD
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-09-29
Anticipated expiration: 2029-12-10

Abstract

The utility model relates to an insulation withstand voltage test technical field, concretely relates to armature is device for withstand voltage test. The insulating shell is provided with a first accommodating cavity, the first accommodating cavity is arranged along the central line of the insulating shell and is matched with the armature in size, the connecting pieces are connected with the insulating shell and are arranged along the radius extension line of the first accommodating cavity, one end of each connecting piece is abutted to the commutator bar, and the other end of each connecting piece is connected with the wiring end of the withstand voltage tester. The utility model has the advantages of no need of manual contact with the pressure-resistant sheet and reliable contact.

Description

Device for testing withstand voltage of armature

Technical Field

The utility model relates to an insulation withstand voltage test technical field, concretely relates to armature is device for withstand voltage test.

Background

The armature is a core component of the dc motor, and the structure and manufacturing process thereof are quite complicated, so it is necessary to test the performance of the armature before assembly, and the insulation and voltage resistance between the segments is a major test item.

At present, when a voltage withstanding test is carried out, a wiring terminal of a voltage withstanding tester is manually and directly contacted with each commutator segment of an armature, and due to the fact that the distance between the commutator segments is small, when the commutator segments are manually contacted, the commutator segments are in single-point contact, shaking is easy to occur to hands, the value to be tested fluctuates, and finally the test is inaccurate.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a device is used in withstand voltage test of armature to the binding post and the commutator segment contact difficulty of withstand voltage tester when solving among the prior art withstand voltage test lead to the unsafe defect of test result.

The technical scheme of the utility model is that:

the utility model provides a device is used in withstand voltage test of armature, includes insulating housing and connecting piece, is equipped with first appearance chamber on the insulating housing, and first appearance chamber sets up and with armature size looks adaptation along insulating housing central line, and the connecting piece has a plurality ofly, is connected with insulating housing, and sets up along the radius extension line that first appearance chamber, and one end offsets with the commutator segment, and the other end is connected with the wiring end of withstand voltage tester.

The device for testing the withstand voltage of the armature further comprises an elastic part which is connected with the connecting part and applies acting force to the connecting part to enable the connecting part to move towards the central line of the first containing cavity, when the armature is not arranged in the first containing cavity, the elastic part extends, the connecting part extends into the first containing cavity, the elastic part is pressed, and the connecting part is abutted to the commutator segment.

The connecting pieces are provided with first through holes, second through holes are arranged between adjacent connecting pieces, the first through holes and the second through holes are arc-shaped, the radiuses of the arc-shaped through holes are the same, the circle centers of the arc-shaped through holes are overlapped with a neutral line of the first accommodating cavity, and the elastic pieces are connected with the first through holes and the second through holes in series.

The connecting piece comprises a fixed part and a movable part, the elastic piece is arranged in the fixed part, the movable part is movably connected with the fixed part and is connected with the elastic piece, and the elastic piece applies acting force to the movable part to enable the movable part to move towards the central line of the first accommodating cavity.

The fixed part is provided with a limiting groove, the moving part moves along the limiting groove, and when the armature is not arranged in the first cavity, the moving part is abutted against the limiting groove under the action of the elastic part.

The moving part is sheet-shaped, and one side of the moving part, which is abutted against the commutator segment, is provided with a round angle.

The side of the fixed part connected with the movable part is in a cone shape.

The device for testing the withstand voltage of the armature further comprises a sealing cover and a groove, the sealing cover is connected with the insulating shell, the groove is formed in the insulating shell, and the connecting piece is arranged in a second containing cavity formed by the groove and the sealing cover.

The utility model discloses technical scheme has following advantage:

1. the utility model discloses a device is used in withstand voltage test of armature is equipped with first appearance chamber on the insulating casing, first appearance chamber along the insulating casing central line setting and with armature size looks adaptation, the connecting piece has a plurality ofly, is connected with insulating casing, and sets up along the radius extension line in first appearance chamber for interval grow between the commutator segment one end is kept away from to adjacent connecting piece, is convenient for be connected with withstand voltage tester binding post. When the withstand voltage test is carried out, one end of the connecting piece is abutted to the commutator segment, the other end of the connecting piece is connected with the wiring terminal of the withstand voltage tester, manual contact with the withstand voltage piece is not needed, and the contact is reliable.

2. The utility model discloses a withstand voltage test of armature is with device, when the first appearance chamber was not arranged in to the armature, the elastic component extended, and the connecting piece part stretches into first appearance chamber, and the elastic component pressurized, connecting piece and commutator segment butt. The elastic piece makes the connecting piece closely contact with the commutator segment.

3. The utility model discloses a device is used in withstand voltage test of armature, connecting piece include fixed part and removal portion, and in the fixed part was located to the elastic component, removal portion and fixed part swing joint, and be connected with the elastic component, the elastic component applyed the effort that makes it move towards the first central line that holds the chamber to removal portion, and removal portion is lighter for the connecting piece, can adopt the elastic component that the elasticity coefficient is less for change installation armature.

4. The utility model discloses a device is used in withstand voltage test of armature, removal portion are the slice for removal portion structure is lighter, can adopt the less elastic component of coefficient of elasticity, makes to change the installation armature, and its one side that offsets with the commutator segment is equipped with the fillet, and is more convenient when putting into first appearance chamber with the armature.

5. The utility model discloses a device is used in withstand voltage test of armature, first appearance chamber and insulating housing's size is certain, for the measurement of realizing the armature for small-size motor, the length that the removal portion stretched into first appearance intracavity is longer (removal portion and fixed part sliding connection, the length of fixed part is longer promptly), can measure armature size littleer, therefore, be the taper with one side that fixed part and removal portion are connected, it is longer to make the removal portion stretch into the length that first appearance intracavity under the unchangeable condition of removal portion length, make the scope that the device can be used wider, can be applicable to the armature of smaller size.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a perspective view of the armature withstand voltage test apparatus;

fig. 2 is a schematic structural view of an exploded view of the armature withstand voltage test apparatus;

fig. 3 is a schematic structural view of a cross-sectional view of the armature withstand voltage test apparatus.

Description of reference numerals:

1-an insulating housing; 2-interface; 3-an elastic member; 4-a first cavity; 5-an armature; 6-a fixed part; 7-a moving part; 8-a limiting groove; 9-sealing the cover; 10-groove.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The device for testing the withstand voltage of the armature, as shown in fig. 1-3, includes an insulating housing 1 and a plurality of connecting members, a first chamber 4 is provided on the insulating housing 1, the first chamber 4 is disposed along the central line of the insulating housing 1 and is matched with the armature 5 in size, the connecting members are connected to the insulating housing 1, and are disposed along the radius extension line of the first chamber 4, so that the distance between the ends of the commutator segments, which are far away from the adjacent connecting members, is increased, and the connecting members are conveniently connected to the connection terminals of the withstand voltage tester. It should be noted that the number of the connecting pieces and the number of the commutator segments should be the same.

The device for testing the withstand voltage of the armature further comprises an elastic part 3 which is connected with the connecting part and applies acting force to the connecting part to enable the connecting part to move towards the central line of the first containing cavity 4, when the armature 5 is not arranged in the first containing cavity 4, the elastic part 3 extends, the connecting part partially extends into the first containing cavity 4, the elastic part 3 is pressed, and the connecting part is abutted to the commutator segment. The elastic piece 3 makes the connecting piece closely contact with the commutator segment.

The connecting piece includes fixed part 6 and removal portion 7, and during the fixed part 6 was located to elastic component 3, elastic component 3 with locate the interface 2 butt in the fixed part, the interface is connected with the binding post of withstand voltage tester, removal portion 7 and fixed part 6 swing joint, and be connected with elastic component 3, elastic component 3 applys the effort that makes it move towards the central line of first appearance chamber 4 to removal portion 7. The moving part 7 is lighter than the connecting member, and the elastic member 3 having a smaller elastic coefficient can be used, so that the armature 5 can be more easily mounted.

As a changeable implementation mode, the connecting pieces are provided with first through holes, second through holes are arranged between adjacent connecting pieces, the first through holes and the second through holes are circular arcs with the same radius, the circle center of the circular arc coincides with the neutral line of the first accommodating cavity 4, and the elastic pieces 3 are connected with the first through holes and the second through holes in series. It should be noted that the elastic member of the present embodiment is of a rubber band type structure.

The fixed part 6 is provided with a limit groove 8, the movable part 7 moves along the limit groove 8, and when the armature 5 is not arranged in the first cavity 4, the movable part 7 is abutted against the limit groove 8 under the action of the elastic part 3.

The moving part 7 is sheet-shaped, and one side of the moving part, which is abutted against the commutator segment, is provided with a round angle. The moving part 7 is a sheet, so that the structure of the moving part 7 is lighter, the elastic part 3 with smaller elastic coefficient can be adopted, the armature 5 can be installed more easily, a round angle is arranged on one side, which is abutted against the commutator segment, of the moving part, and the armature 5 is more convenient to place in the first accommodating cavity 4.

The side of the fixed part 6 connected with the moving part 7 is conical. First appearance chamber 4 and insulating housing 1's size is certain, for the measurement of realization armature 5 for small-size motor, the length that removal portion 7 stretched into in first appearance chamber 4 is longer (removal portion 7 and fixed part 6 sliding connection, the length of fixed part 6 is longer promptly), can measure armature 5 size and be less, consequently, the one side of being connected fixed part 6 and removal portion 7 is the taper, it is longer to make removal portion 7 stretch into the length in first appearance chamber 4 under the unchangeable condition of removal portion 7 length, make the device can be used the scope wider, can be applicable to armature 5 of smaller size.

The device for testing the withstand voltage of the armature further comprises a sealing cover 9 and a groove 10, wherein the sealing cover 9 is connected with the insulating shell 1, the groove 10 is formed in the insulating shell 1, and the connecting piece is arranged in a second containing cavity formed by the groove 10 and the sealing cover 9.

When the voltage resistance between all the commutator segments is measured, the armature 5 to be measured is placed into the first containing cavity 4, the moving part 7 is abutted against the commutator segments, and the interface 2 arranged on the fixing part 6 is connected with a plurality of wiring terminals of a voltage resistance tester. The device is the withstand voltage tester that uses in practical application cooperation: the voltage-resistant insulation resistance tester (the commodity model: TH 9320-S8/AC 0-5000V, DC1050V) performs measurement through a multi-channel module. The purpose is to detect whether the slot of the commutator segment is cut or copper scraps generated during cutting are remained. The device does not need manual hand contact with the pressure-resistant sheet during measurement, so that the contact is reliable.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. An armature withstand voltage test device, comprising:

the armature winding device comprises an insulating shell (1), wherein a first containing cavity (4) is formed in the insulating shell (1), and the first containing cavity (4) is arranged along the central line of the insulating shell (1) and is matched with the armature (5) in size;

the connecting pieces are provided with a plurality of connecting pieces, are connected with the insulating shell (1), are arranged along the radius extension line of the first accommodating cavity (4), and have one end abutting against the commutator segment and the other end connected with the wiring end of the voltage-withstanding tester.

2. The armature withstand voltage test apparatus according to claim 1, further comprising:

the elastic piece (3) is connected with the connecting piece and applies acting force to the connecting piece to enable the connecting piece to move towards the central line of the first containing cavity (4), when the armature (5) is not arranged in the first containing cavity (4), the elastic piece (3) extends, the connecting piece partially extends into the first containing cavity (4), the elastic piece (3) is pressed, and the connecting piece is abutted to the commutator segment.

3. The device for testing the withstand voltage of the armature according to claim 2, wherein a first through hole is formed in each connecting piece, a second through hole is formed between adjacent connecting pieces, the first through hole and the second through hole are circular arcs with the same radius, the circle centers of the circular arcs coincide with the neutral line of the first accommodating cavity (4), and the elastic piece (3) is connected with the first through holes and the second through holes in series.

4. The armature withstand voltage test apparatus according to claim 2, wherein the connecting member comprises:

a fixing portion (6), wherein the elastic member (3) is arranged in the fixing portion (6);

the moving part (7) is movably connected with the fixing part (6) and connected with the elastic piece (3), and the elastic piece (3) applies acting force to the moving part (7) to enable the moving part to move towards the central line of the first accommodating cavity (4).

5. The device for testing the withstand voltage of the armature according to claim 4, wherein a limiting groove (8) is formed in the fixing portion (6), the moving portion (7) moves along the limiting groove (8), and when the armature (5) is not disposed in the first cavity (4), the moving portion (7) abuts against the limiting groove (8) under the action of the elastic member (3).

6. The armature withstand voltage test apparatus according to claim 4 or 5, wherein the moving portion (7) has a plate shape, and a rounded corner is provided on a side thereof abutting against the commutator segment.

7. The device for testing armature withstand voltage according to claim 4 or 5, wherein a side of the fixed portion (6) connected to the movable portion (7) is tapered.

8. The armature withstand voltage test apparatus according to claim 1, further comprising:

the sealing structure comprises a sealing cover (9) and a groove (10), wherein the sealing cover (9) is connected with the insulating shell (1), the groove (10) is formed in the insulating shell (1), and the connecting piece is arranged in a second containing cavity formed by the groove (10) and the sealing cover (9).