Magnetic steel device inside the casing

Abstract

The purpose of the present invention is to provide a device for sticking magnetic steel inside a casing, which can avoid the displacement of magnetic steel and make the assembly position of magnetic steel more accurate. To achieve the above purpose, the present invention adopts the following technical scheme: an auxiliary device for sticking magnetic steel inside a casing, comprising a plurality of movable blocks, the plurality of movable blocks are arranged in an annular interval, the movable blocks are fixed to the output end of the driving mechanism, the casing is sleeved on the circumferential outer side of the movable blocks and supported on the first support platform, the movable blocks are all moved toward the inner wall side of the casing under the action of the driving mechanism, the lower ends of the movable blocks are all extended circumferentially outward to form a second support platform for supporting magnetic steel, the distance between the circumferential outer edge of the second support platform and the circumferential outer wall of the movable block is less than the thickness of the magnetic steel, and two stoppers are arranged on the circumferential outer wall of each movable block, and the outer wall shape of the movable block located on the upper side of the second support platform and between the two stoppers is the same as the shape of the inner wall of the magnetic steel.

Description

Technical Field

[0001] The invention relates to a magnetic steel device inside a casing. Background Art

[0002] During the assembly of the motor, it is necessary to fix the magnets on the inner wall of the casing. The magnets are tile-shaped and fixed to the inner wall of the casing by glue. Due to the interaction between the magnets, the magnets will deviate from the set position, causing the motor quality to deteriorate.

[0003] Some motors have certain angle requirements between their casing and the magnet. Such motors usually have a process hole on their casing (as a drainage hole or a lubricating oil addition hole). The angle position between the process hole and the magnet needs to be determined. Currently, marks are drawn on the inner wall of the magnet with a pen, and then the edge of the magnet is attached to the pen mark. The assembly accuracy of the magnet is low and the motor quality is poor. Summary of the invention

[0004] The object of the present invention is to provide a device for bonding magnetic steel inside a casing, which can avoid the displacement of magnetic steel and make the assembly position of magnetic steel more accurate.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an auxiliary device for sticking magnetic steel in a casing, comprising a plurality of movable blocks, the plurality of movable blocks are arranged in a ring-shaped interval, the movable blocks are fixed to the output end of the driving mechanism, the casing is arranged on the circumferential outer side of the movable blocks and supported on a first support platform, the movable blocks all move toward the inner wall side of the casing under the action of the driving mechanism, the lower ends of the movable blocks all extend circumferentially outward to form a second support platform for supporting the magnetic steel, the distance between the circumferential outer edge of the second support platform and the circumferential outer wall of the movable block is less than the thickness of the magnetic steel, two blocks are provided on the circumferential outer wall of each movable block, and the outer wall shape of the movable block located on the upper side of the second support platform and between the two blocks is the same as the shape of the inner wall of the magnetic steel.

[0006] When the device of the present invention is used, the required number and position of positioning blocks are selected according to the set position and number of magnetic steels; glue is applied on the inner wall of the casing in advance, and then the magnetic steels are placed on the second supporting boss of the positioning blocks so that each magnetic steel is located between the two stoppers. Then the casing is placed outside the positioning blocks and the driving mechanism is started. The positioning blocks move under the action of the driving mechanism so that the magnetic steels contact the glue on the inner wall of the casing to achieve the fixation of the magnetic steels. The device of the present invention prevents the offset rotation of the magnetic steels through the stoppers, and can prevent the magnetic steels from deviating from the set position, so as to improve the product quality.

[0007] Preferably, the first support platform is fixed to the lower end of the second support platform and is linked to the movable block. The above arrangement makes the device of the present invention simpler in structure and smaller in size.

[0008] Preferably, the driving mechanism is a chuck, and the chuck is provided with a plurality of movable claws, and each movable block is fixed and linked with a movable claw. The above arrangement makes the device of the present invention smaller in size. At the same time, the concentricity between the plurality of movable claws of the chuck is higher, which can make the housing and the magnetic steel more concentric.

[0009] Preferably, a clearance groove is provided on the inner wall of the movable block, the movable claw is L-shaped and includes a vertical portion and a horizontal portion, the movable block is located on the upper side of the horizontal portion, and the vertical portion is located in the clearance groove and fixed to the movable block.

[0010] Preferably, the outer surface of the movable block is concave to form a plurality of fixing grooves, and the stopper is fixed in the fixing grooves. The above arrangement facilitates the setting of the stopper, and stops of different shapes can be set according to the shape of the edge of the magnetic steel, so that the stopper can better limit the magnetic steel.

[0011] Preferably, the driving mechanism is fixed on a workbench, a positioning block is provided on the workbench, the positioning block is located on the circumferential side of the movable block, a positioning pin is fixed on the positioning block, a radially penetrating process hole is provided on the casing, and the end of the positioning pin extends into the process hole. The casing is further concentric by providing the positioning pin. The process hole on the casing is a drainage hole or a lubricating oil addition hole provided in the casing itself.

[0012] Preferably, the positioning block is provided with a plurality of fixing holes, the axes of the plurality of fixing holes form a radial structure, and the positioning pin is inserted and fixed in any one of the fixing holes. Each fixing hole corresponds to a different angle, and the positioning pin is made coaxial with the fixing holes with different process holes, thereby realizing the angle adjustment of the housing.

[0013] Preferably, the positioning block includes a fixed part and a rotating part, the rotating part can be rotatably fixed on the fixed part, and a matching angle scale value and a reading line are provided between the rotating part and the fixed part, and the positioning pin is fixed on the rotating part. The above arrangement enables the present invention to be used in motor assembly with different angles between the housing and the magnetic steel.

[0014] Preferably, the positioning block is annular. The above arrangement makes the use of the present invention more convenient and the placement of the housing more convenient and arbitrary.

[0015] Preferably, the driving mechanism is located at the lower side of the movable block, and the positioning block is fixed to the upper side of the driving mechanism through a fixing frame. The positioning block is not fixed on the workbench like the driving mechanism, so that the present invention is more convenient to place and cooperate with the workbench, so that the present invention occupies less space.

[0016] The present invention has the advantage of being able to avoid the magnetic steel from deviating, thereby making the assembly position of the magnetic steel more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A usage state diagram of the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of a structure without the casing and magnetic steel;

[0019] Figure 3 A vertical cross-sectional view of the present invention when in use;

[0020] Figure 4 A top view of the present invention when in use;

[0021] Figure 5 for Figure 1 Enlarged view of point A. DETAILED DESCRIPTION

[0022] The present invention will be further described below based on the accompanying drawings and specific embodiments.

[0023] Depend on Figures 1 to 5 As shown, a device for sticking magnetic steel in a casing of the present invention comprises a plurality of movable blocks 2, which are arranged in a ring-shaped uniform interval, the movable blocks 2 are fixed to the output end of the driving mechanism 4, the casing 5 is sleeved on the circumferential outer side of the movable blocks and supported on the first support platform 21, the movable blocks 2 are all moved toward the inner wall side of the casing 5 under the action of the driving mechanism 4, the lower ends of the movable blocks 2 are all extended circumferentially outward to form a second support platform 22 for supporting the magnetic steel 1, the distance between the circumferential outer edge of the second support platform 22 and the circumferential outer wall of the movable block 2 is less than the thickness of the magnetic steel 1, and two stoppers 3 are provided on the circumferential outer wall of each movable block 2, the outer wall shape of the movable block 2 located on the upper side of the second support platform 22 and between the two stoppers 3 is the same as the shape of the inner wall of the magnetic steel and is a curved surface structure 20. Among them, the first support platform 21 is fixed to the lower end of the second support platform 22 and is linked to the movable block 2.

[0024] The driving mechanism 4 is a chuck, on which a plurality of movable claws are arranged, each movable block 2 is fixed and linked to a movable claw 41 , and the chuck is located at the lower side of the movable block 2 .

[0025] A clearance groove 23 is provided on the inner side of the movable block 2 away from the arc-shaped outer wall, and the movable claw 41 is L-shaped and includes a vertical portion 42 and a horizontal portion 43. The movable block 2 is supported on the horizontal portion 43, and the vertical portion 42 is located in the clearance groove 23 and fixed to the movable block 2 by fasteners. The outer surface of the movable block 2 is concave to form a plurality of fixing grooves 24, and the stopper 3 is fixed in the fixing grooves 24.

[0026] A ring-shaped positioning block 6 is fixed to the outer side of the movable block 2 in the circumferential direction. A fixing hole 69 is provided on the positioning block 6. A positioning pin (not shown in the figure) is fixed in the fixing hole 69. A radially penetrating process hole 51 is provided on the housing 5. The end of the positioning pin extends into the process hole 51. The positioning block 6 includes a fixed portion 61 and a rotating portion 62. The fixing hole 60 is provided on the rotating portion 61. The rotating portion 62 can be rotatably fixed to the upper side of the fixed portion 61. An angle scale value 63 and a reading line 64 that cooperate with each other are provided between the rotating portion 62 and the fixed portion 61. Among them, the fixed portion 61 is fixed on the chuck as the driving mechanism 4. The fixed portion 61 is fixed on the chuck through a fixing frame. The fixing frame avoids the movable claw 41, and the positioning block is located above the horizontal part of the movable claw 41.

[0027] When the device of the present invention is used, the magnet is placed on the second support platform of the movable block, and then the casing is sleeved outside the movable block and supported on the movable claw of the driving mechanism, and a positioning pin is inserted into the fixing hole of the positioning block, so that the end of the positioning pin extends into the casing, so that the casing and the rotating part of the positioning block are linked, and then the rotating part and the casing are rotated, and the rotation angle of the casing is determined by looking at the reading line, so as to adjust the angle between the casing and the magnet. Glue is applied on the inner wall of the casing in advance, and the driving mechanism is started after the casing is positioned, so that the movable block moves toward the inner wall of the casing under the action of the movable claw, so that the magnet is attached to the inner wall of the casing.

[0028] The present invention has the advantage of being able to avoid the magnetic steel from deviating, thereby making the assembly position of the magnetic steel more accurate.

Claims

1. A magnetic steel device in a housing, characterized in that The invention comprises a plurality of movable blocks, the plurality of movable blocks are arranged in an annular interval, the movable blocks are fixed to the output end of the driving mechanism, the casing is sleeved on the outer side of the movable blocks in the circumferential direction and supported on the first support platform, the movable blocks are all moved toward the inner wall side of the casing under the action of the driving mechanism, the lower ends of the movable blocks are all extended outwardly in the circumferential direction to form a second support platform for supporting the magnetic steel, the distance between the circumferential outer edge of the second support platform and the circumferential outer wall of the movable block is less than the thickness of the magnetic steel, two stoppers are arranged on the circumferential outer wall of each movable block, the movable block is located on the upper side of the second support platform and is located between the two stoppers. The shape is the same as the shape of the inner wall of the magnetic steel; a positioning block is fixed to the outer side of the movable block, a positioning pin is fixed on the positioning block, a radially penetrating process hole is provided on the casing, and the end of the positioning pin extends into the process hole; a plurality of fixing holes are provided on the positioning block, and the axes of the plurality of fixing holes constitute a radial structure, and the positioning pin is inserted and fixed in any one of the fixing holes; the positioning block includes a fixed part and a rotating part, the rotating part can be rotatably fixed on the fixed part, and mutually matching angle scale values ​​and reading lines are provided between the rotating part and the fixed part, and the positioning pin is fixed on the rotating part.

2. The in-housing magnetic steel device according to claim 1, characterized in that The first support platform is fixed to the lower end of the second support platform and is linked with the movable block.

3. The in-housing magnetic steel device according to claim 1, characterized in that The driving mechanism is a chuck, and a plurality of movable claws are arranged on the chuck, and each movable block is fixed and linked with a movable claw.

4. The in-housing magnetic steel device according to claim 3, characterized in that The inner wall of the movable block is provided with a clearance groove, the movable claw is L-shaped and includes a vertical part and a horizontal part, the movable block is located on the upper side of the horizontal part, and the vertical part is located in the clearance groove and fixed to the movable block.

5. The in-housing magnetic steel device according to claim 1, characterized in that The outer surface of the movable block is concave to form a plurality of fixing grooves, and the stopper is fixed in the fixing grooves.

6. The in-housing magnetic steel device according to claim 1, characterized in that The positioning block is ring-shaped.

7. The in-housing magnetic steel device according to claim 1, characterized in that The driving mechanism is located at the lower side of the movable block, and the positioning block is supported and fixed on the upper side of the driving mechanism through a fixing frame.

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