Stepless housing magnetic steel device

Abstract

The utility model discloses a step-free housing magnet device, comprising a circumferential positioning structure and a vertical positioning structure; the circumferential positioning comprises a positioning ring sleeved on the top surface of the housing, a plurality of clamping feet are evenly distributed on the inner wall surface of the positioning ring, the number of the clamping feet is consistent with the number of gaps on the magnet, and the clamping feet correspond to the gaps on the magnet one by one; the cross-section of the clamping feet is triangular; the step-free housing magnet device is provided with efficient assembly, ensuring the accurate position of the magnet and reducing the production cost.

Description

Technical Field

[0001] The utility model relates to a step-free casing magnetic steel pasting device. Background Art

[0002] During the motor assembly process, the magnets need to be assembled with the housing. During the installation process, due to the magnetism of the magnets, the magnets and the housing will attract each other; the current assembly requirements of the magnets need to meet the same height and spacing, that is, accurate positioning. However, due to the glue applied between the magnets and the housing, the friction generated by the magnetic force between the magnets and the housing cannot overcome the gravity of the magnets, and they tend to slide downward under gravity.

[0003] The most commonly used operating methods in the industry are:

[0004] 1. Design a housing with steps, but this solution needs to obtain the same geometric tolerance accuracy and has high manufacturing costs;

[0005] 2. A lower-value part that acts as a step is added to the housing, but this solution has high manufacturing costs. Utility Model Content

[0006] In view of the above problems, the purpose of the utility model is to provide a step-free housing magnet attachment device which has the advantages of efficient assembly, ensuring the accurate position of the magnet and reducing the production cost.

[0007] The technical solution to realize the utility model is as follows

[0008] A stepless casing magnet device includes a circumferential positioning structure and a vertical positioning structure; the circumferential positioning includes a positioning ring sleeved on the top surface of the casing, and a plurality of clamping feet are evenly distributed on the inner wall surface of the positioning ring, the number of the clamping feet is consistent with the number of gaps on the magnet, and the clamping feet correspond to the gaps on the magnet one by one; the cross-section of the clamping feet is triangular.

[0009] The vertical positioning structure includes an assembly rod and a base, an assembly disk is provided at the bottom end of the assembly rod, and a step hole is provided on the bottom surface of the assembly disk that can be installed in cooperation with the convex ring of the base; an annular step is provided along the outer edge of the top surface of the assembly disk, and a plurality of hooks are evenly distributed on the outer surface of the annular step, and the hooks correspond one by one to the gaps on the outer surface of the magnetic steel.

[0010] The bottom edge of the hook is provided with a chamfer.

[0011] A positioning shaft assembled with the shaft outlet hole of the casing is arranged in the center of the step hole of the assembly rod.

[0012] A wave spring is sleeved on the positioning shaft between the top surface of the step hole of the assembly rod and the top surface of the convex ring of the base.

[0013] A gap for installing a wave spring is reserved between the step hole of the assembly rod and the convex ring of the base.

[0014] A plurality of guide columns are evenly distributed on the base surface outside the base boss, and a plurality of guide holes are opened on the assembly plate, and the guide holes correspond to the guide columns one by one.

[0015] By adopting the above technical solution, the positioning ring is mounted on the top surface of the casing to play a fixing role, and the clamping feet are inserted into the corresponding gaps to achieve circumferential positioning of the magnet; the cross-section of the part where the clamping feet are inserted into the gap is triangular, which can effectively prevent the magnet from circumferential rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the vertical positioning mechanism of the utility model;

[0019] In the accompanying drawings, 1 is a circumferential positioning structure, 2 is a vertical positioning structure, 3 is a housing, 4 is a positioning ring, 5 is a foot, 6 is a magnet, 7 is a gap, 8 is an assembly rod, 9 is a base, 10 is an assembly disk, 11 is a base convex ring, 12 is a step hole, 13 is an annular step, 14 is a hook, 16 is a shaft hole of the housing, 17 is a positioning shaft, 18 is a wave spring, 19 is a guide column, and 20 is a gap. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The stepless housing magnet device comprises a circumferential positioning structure 1 and a vertical positioning structure 2; the circumferential positioning comprises a positioning ring 4 sleeved on the top surface of the housing 3, and a plurality of clamping feet 5 are evenly distributed on the inner wall of the positioning ring, the number of which is consistent with the number of gaps on the magnet 6, and the clamping feet correspond to the gaps 7 on the magnet one by one; the cross section of the clamping feet is triangular. The positioning ring is mounted on the top surface of the housing to play a fixing role, and the clamping feet are clamped into the corresponding gaps to achieve circumferential positioning of the magnet; the cross section of the part where the clamping feet are clamped into the gap is triangular, which can effectively prevent the magnet from sliding along the circumferential direction.

[0022] The vertical positioning structure includes an assembly rod 8 and a base 9. The bottom end of the assembly rod is provided with an assembly plate 10. The bottom surface of the assembly plate is provided with a step hole 12 that can be installed in cooperation with the base convex ring 11. The top surface of the assembly plate is provided with an annular step 13 along the outer edge. A plurality of hooks 14 are evenly distributed on the outer surface of the annular step. The hooks correspond to the gaps on the outer surface of the magnet. The bottom surface of the base contacts the bottom end surface of the housing as the basis for vertical positioning. The hooks 14 are used to provide vertical limit. The hooks 14 are supported by a wave spring (the assembly preload force is greater than 5 to 10 times the weight of all the magnets). That is to say, due to the relatively large force of the wave spring, the vertical positioning mechanism can maintain the "set value". The hooks will press against the bottom surface of the magnet, which can effectively prevent the magnet from sliding down due to gravity.

[0023] The center of the step hole of the assembly rod is provided with a positioning shaft 17 assembled with the housing shaft hole 16. The positioning shaft is assembled with the housing shaft hole, which facilitates positioning on the one hand and installation on the other hand.

[0024] A wave spring 18 is sleeved on the positioning shaft between the top surface of the assembly rod step hole and the top surface of the base convex ring. Since the power of the wave spring is relatively large, the hook of the vertical positioning mechanism can be kept against the bottom surface of the magnetic steel.

[0025] A gap 20 for installing the wave spring is left between the step hole of the assembly rod and the convex ring of the base. When the hook of the vertical positioning mechanism is in the initial position against the bottom surface of the magnetic steel, the hook 14 is misaligned with the circumferential positioning; when disassembly is required, the vertical positioning mechanism can be rotated to the gap of the magnetic steel and then pulled out due to the gap.

[0026] The distance h between the step surface of the step hole of the assembly rod and the base surface outside the base boss is less than 1 mm. Ensure that the adjustment distance here is less than 1 mm, and it is convenient to fine-tune if the magnetic steel is not installed in place.

[0027] A plurality of guide posts 19 are evenly distributed on the base surface outside the base boss, and a plurality of guide holes are opened on the assembly disk, and the guide holes correspond to the guide posts one by one, so as to facilitate the installation of the assembly disk.

[0028] Here is the process of disassembling the device:

[0029] After the glue on the outer arc surface of the magnet solidifies, first pull out the circumferential positioning structure mounted on the casing, then rotate the assembly rod of the vertical positioning structure so that the hook can be rotated to the gap of the magnet and can be pulled out to complete the disassembly.

Claims

1. A stepless housing magnet device, characterized in that: It includes a circumferential positioning structure and a vertical positioning structure; the circumferential positioning includes a positioning ring sleeved on the top surface of the casing, and a plurality of clamping feet are evenly distributed on the inner wall surface of the positioning ring. The number of the clamping feet is consistent with the number of gaps on the magnetic steel, and the clamping feet correspond to the gaps on the magnetic steel one by one; the cross-section of the clamping feet is triangular.

2. The stepless housing magnet device according to claim 1, characterized in that: The vertical positioning structure includes an assembly rod and a base, an assembly disk is provided at the bottom end of the assembly rod, and a step hole is provided on the bottom surface of the assembly disk that can be installed in cooperation with the convex ring of the base; an annular step is provided along the outer edge of the top surface of the assembly disk, and a plurality of hooks are evenly distributed on the outer surface of the annular step, and the hooks correspond one by one to the gaps on the outer surface of the magnetic steel.

3. The stepless housing magnet device according to claim 2, characterized in that: The bottom edge of the hook is provided with a chamfer.

4. The stepless housing magnet device according to claim 2, characterized in that: A positioning shaft assembled with the shaft outlet hole of the casing is arranged in the center of the step hole of the assembly rod.

5. The stepless housing magnet device according to claim 2, characterized in that: A wave spring is sleeved on the positioning shaft between the top surface of the step hole of the assembly rod and the top surface of the convex ring of the base.

6. The stepless housing magnet device according to claim 2, characterized in that: A gap for installing a wave spring is reserved between the step hole of the assembly rod and the convex ring of the base.

7. The stepless housing magnet device according to claim 2, characterized in that: A plurality of guide columns are evenly distributed on the base surface outside the base boss, and a plurality of guide holes are opened on the assembly plate, and the guide holes correspond to the guide columns one by one.

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