Quick-release type rotor core lamination expansion clamp

Abstract

The utility model discloses a quick-release rotor core lamination expansion clamp which comprises a sleeve, a frustum pressing block is arranged in an inclined deformation cavity, a threaded rod is fixedly arranged on the frustum pressing block, a gasket and a rotating block are sequentially arranged above an upper opening of the threaded rod, a spring is arranged between the upper opening of the threaded rod and the frustum pressing block in a sleeved mode, and the upper opening of the threaded rod is connected with the rotating block in a sleeved mode. The return stroke groove extends in the length direction of the threaded rod, an inner threaded hole matched with the outer threads is formed in the rotating block, arc-shaped return stroke faces are arranged in the inner threaded hole, the central angle of each arc-shaped return stroke face is smaller than or equal to the central angle of the return stroke groove, and the sum of the central angles of the adjacent arc-shaped return stroke faces is larger than the central angle of the return stroke groove. The inner threaded hole corresponds to the return stroke groove, the arc-shaped return stroke face corresponds to the outer threads, it is guaranteed that the rotating block is not in threaded connection with the threaded rod in the axial direction of the threaded rod, and under the action of the spring, the frustum pressing block is rapidly reset, and use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of clamp, especially a quick-release rotor core lamination expansion clamp. BACKGROUND

[0002] The rotor core of the motor is a punched lamination structure with an inner circular hole sheet, after punching the stainless steel plate material, the rotor core formed by stacking is fixed, and then detection and further processing are carried out.

[0003] In the fixing process, the common inner circular hole sheet workpiece fixing device structure is complex, and cannot complete quick clamping and fixing. In the prior art, the applicant has applied for a utility model patent with the application number "201922485914.6", which discloses an inner circular hole sheet workpiece expansion fixing clamp. The clamp body is expanded by rotating the nut. However, when the clamp is reset, the nut needs to be rotated for a long time, and the use is relatively cumbersome. UTILITY MODEL CONTENTS

[0004] The utility model discloses a quick-release rotor core lamination expansion clamp, which has the advantages of convenient use through the structure of half thread and fast reset through the return groove.

[0005] The utility model discloses a quick-release rotor core lamination expansion clamp, which has the advantages of convenient use through the structure of half thread and fast reset through the return groove.

[0006] Preferably, the central angle of the arc-shaped return surface is equal to 180 degrees, and the rotating block is provided with two, and the central angle of each rotating block is equal to 180 degrees.

[0007] By adopting the above technical scheme, the inner thread hole and the outer thread are always in a matching state.

[0008] Preferably, the top of the threaded rod is provided with a limiting top block, and the two sides of the limiting top block in the width direction are provided with ear pieces.

[0009] By adopting the above technical scheme, the limiting top block limits the rotating block from being separated from the threaded rod, and the ear pieces are used by the user to rotate the limiting top block.

[0010] Preferably, the diameter of the spring is greater than the diameter of the upper opening, the bottom of the spring abuts against the top of the conical pressing block, and the top of the spring abuts against the inner side of the upper opening.

[0011] By adopting the above technical scheme, the upper opening limits the spring from being separated from the top of the inclined deformation cavity.

[0012] Preferably, the rotating block is made of plastic, a mounting groove is provided in the rotating block, and a hexagonal nut is arranged in the mounting groove.

[0013] By adopting the above technical scheme, another processing mode of the rotating block is disclosed.

[0014] Preferably, the outer circumferential surface of the rotating block is provided with friction vertical lines, the friction vertical lines are arranged around the outer surface of the rotating block, and the friction vertical lines extend along the axial direction of the rotating block.

[0015] By adopting the above technical scheme, the friction lines increase the friction force of the rotating rotating block, and facilitate the rotation of the rotating block.

[0016] Preferably, a plug-in limiting structure is arranged between adjacent rotating blocks, and the plug-in limiting structure limits the relative rotation between the rotating blocks.

[0017] By adopting the above technical scheme, when the clamp is returned or expanded, the plug-in limiting structure ensures the relative fixation between adjacent rotating blocks.

[0018] Preferably, the plug-in limiting structure comprises a plug-in hole and a plug-in piece, the plug-in hole is provided through the rotating block, the plug-in piece is matched with the plug-in hole, and at least two plug-in holes are arranged on the rotating block.

[0019] By adopting the above technical scheme, the plug-in piece is inserted into the plug-in hole to fix the adjacent rotating blocks in the height direction, and the two are separated by taking out the plug-in piece.

[0020] Preferably, the plug-in piece is made of ferromagnetic material, the top of the plug-in piece is provided with a limiting block, the diameter of the limiting block is greater than the diameter of the plug-in piece, and the top of the plug-in hole is provided with a limiting hole matched with the limiting block.

[0021] By adopting the technical scheme, the plug-in part made of ferromagnetic material has high structural strength, and the plug-in part is convenient to take out through the magnetic material.

[0022] In summary, in use, the sum of the central angles of the adjacent arc-shaped return surfaces is greater than the central angle of the return groove, so that the external thread and the internal thread of the plurality of rotating blocks are always in contact when the rotating blocks rotate, and the taper compression block is expanded or retracted when the threaded rod is raised or lowered; at the same time, in quick loosening, the internal thread hole corresponds to the return groove, and the arc-shaped return surface corresponds to the external thread, so that the rotating blocks are not threadedly connected with the threaded rod in the axial direction of the threaded rod, and the taper compression block is quickly reset under the action of the spring, which is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of an expansion state of example 1;

[0024] Figure 2 is a schematic diagram of a return state of example 1;

[0025] Figure 3 is a schematic diagram of the structure of the rotating block of example 1;

[0026] Figure 4 is a schematic diagram of the structure of the limiting hole of the rotating block of example 1;

[0027] Figure 5 is a schematic diagram of the structure of the rotating block of example 2;

[0028] Figure 6 is a schematic diagram of the structure of the limiting top block of example 1;

[0029] In the figure, 1, sleeve; 11, upper hole groove; 12, lower hole groove; 13, inclined deformation cavity; 14, upper opening; 2, taper compression block; 21, gasket; 22, spring; 23, threaded rod; 24, return groove; 25, external thread; 26, limiting top block; 27, ear; 3, rotating block; 31, friction vertical lines; 32, internal thread hole; 33, arc-shaped return surface; 34, mounting groove; 35, hexagonal nut; 41, plug-in hole; 42, limiting hole; 43, plug-in part; 44, limiting block. DETAILED DESCRIPTION

[0030] The utility model will be further explained in detail below in combination with the drawings.

[0031] The specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, and those skilled in the art can make non-creative contribution modifications according to the needs after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

[0032] Embodiment:

[0033] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 , a quick-release rotor core lamination expansion clamp comprises a sleeve 1, the outer surface of the sleeve 1 is staggered with upper hole grooves 11 and lower hole grooves 12, the inside of the sleeve 1 is provided with an inclined deformation cavity 13, the inclined deformation cavity 13 is provided through along the length direction of the sleeve 1, the top of the sleeve 1 is formed with an upper opening 14, the inclined deformation cavity 13 is provided with a conical compression block 2, the sleeve 1 is expanded and retracted by moving the conical compression block 2 in the height direction of the inclined deformation cavity 13, the top of the conical compression block 2 is fixedly welded with a threaded rod 23, the threaded rod 23 is sleeved with a spring 22 between the upper opening 14 and the conical compression block 2, the diameter of the spring 22 is greater than the diameter of the upper opening 14, the bottom of the spring 22 abuts against the top of the conical compression block 2, and the top of the spring 22 abuts against the inner side of the upper opening 14.

[0034] As shown in Figure 1 and Figure 2 , the threaded rod 23 is sequentially provided with a gasket 21 and a rotating block 3 above the upper opening 14, the rotating block 3 is provided with at least two on the threaded rod 23, both embodiment 1 and embodiment 2 are provided with two, the outer circumferential surface of the threaded rod 23 is provided with a return groove 24 and an external thread 25, the surface of the return groove 24 is lower than the surface of the external thread 25, the return groove 24 extends along the length direction of the threaded rod 23, the rotating block 3 is provided with an internal thread hole 32 matched with the external thread 25, the internal thread hole 32 is provided with an arc-shaped return surface 33, as shown in Figure 3 and Figure 4 , the arc-shaped return surface 33 and the return groove 24 are on the same side, which ensures that the external thread 25 and the internal thread hole 32 are always in a matching state, when quick release, the arc-shaped return surface 33 corresponds to the external thread 25, and the return groove 24 corresponds to the internal thread hole 32, so that the external thread 25 and the internal thread hole 32 are out of cooperation, and the spring 22 is used to realize quick reset.

[0035] Since the number of rotating blocks 3 can be set to be multiple, in order to meet the quick reset and normal use, the central angle of each arc-shaped return surface 33 is less than or equal to the central angle of the return groove 24, and the sum of the central angles of adjacent arc-shaped return surfaces 33 is greater than the central angle of the return groove 24.

[0036] Taking the two rotating blocks 3 in embodiment 1 as an example, the central angle of the arc-shaped return surface 33 is equal to 180 degrees, and the central angle of each rotating block 3 is equal to 180 degrees.

[0037] As shown in Figure 1 , Figure 2 andFigure 6 As shown in the drawings, in order to limit the rotation block 3 from being separated from the threaded rod 23, and facilitate the rotation of the threaded rod 23 from the top, the top of the threaded rod 23 is connected with a limiting top block 26, and the limiting top block 26 is provided with an ear 27 on both sides in the width direction, which is used by the user to rotate.

[0038] In embodiments 1 and 2, as shown in the drawings, Figure 3 and Figure 4 As shown in the drawings, the outer circumferential surface of the rotation block 3 is provided with friction vertical lines 31, which are arranged around the outer surface of the rotation block 3, and extend along the axial direction of the rotation block 3, thereby improving the friction of the rotation block 3; at the same time, the rotation block 3 is made of aluminum alloy as a whole.

[0039] In order to ensure that the adjacent rotation blocks 3 in the height direction rotate synchronously, a plug-in limiting structure is arranged between the adjacent rotation blocks 3, which limits the relative rotation between the rotation blocks 3. The plug-in limiting structure includes a plug-in hole 41 and a plug-in piece 43. The plug-in hole 41 is arranged through the rotation block 3, and the plug-in piece 43 cooperates with the plug-in hole 41. The plug-in hole 41 is provided with at least two on the rotation block 3, and the plug-in hole 41 is symmetrically provided with two in embodiment 1. The plug-in piece 43 is made of ferromagnetic material as a whole, and the top of the plug-in piece 43 is provided with a limiting block 44. The cross-sectional shape of the plug-in piece 43 and the limiting block 44 is circular. The diameter of the limiting block 44 is greater than that of the plug-in piece 43. The top of the plug-in hole 41 is provided with a limiting hole 42 which cooperates with the limiting block 44.

[0040] Working principle:

[0041] In use, the arc-shaped return surface 33 and the return groove 24 are on the same side, which ensures that the external thread 25 and the internal thread hole 32 are always in cooperation. Therefore, when the rotation block 3 rotates, the external thread 25 and the internal thread of the plurality of rotation blocks 3 can always be in contact. When the threaded rod 23 rises, the conical compression block 2 moves upward, causing the cylinder to expand outward, thereby expanding and fixing the rotor center on the cylinder. When the threaded rod 23 descends, the conical compression block 2 moves downward under the combined action of the spring 22 and the inclined deformation cavity 13 of the cylinder, causing the cylinder to retract inward. At the same time, when the fastening is loosened, the arc-shaped return surface 33 corresponds to the external thread 25, and the return groove 24 corresponds to the internal thread hole 32, so that the external thread 25 and the internal thread hole 32 are separated from each other. This ensures that the rotation block 3 and the threaded rod 23 are not threadedly connected in the axial direction of the threaded rod 23. Under the action of the spring 22, the conical compression block 2 is quickly reset.

[0042] Embodiment 2:

[0043] As shown in the drawings, Figure 5As shown, the difference between Example 2 and Example 1 is that the structure of the rotating block 3 is different, and in Example 2, the rotating block 3 is made of plastic, and a hexagonal mounting groove 34 is provided through the rotating block 3, and a hexagonal nut 35 is embedded in the mounting groove 34.

[0044] The working principle of Example 2 is the same as that of Example 1.

Claims

1. A quick-release rotor core lamination expansion clamp, comprising a sleeve (1), the outer surface of the sleeve (1) is staggered with an upper hole groove (11) and a lower hole groove (12), characterized in that: The inside of the sleeve (1) is provided with an inclined deformation cavity (13), which is provided along the length direction of the sleeve (1), and the top of the sleeve (1) is provided with an upper opening (14), and the inclined deformation cavity (13) is provided with a conical compression block (2), and the conical compression block (2) is fixedly provided with a threaded rod (23), and the threaded rod (23) is provided with a gasket (21) and a rotating block (3) above the upper opening (14) in sequence, and the threaded rod (23) is provided with a spring (22) between the upper opening (14) and the conical compression block (2), and the rotating block (3) is provided with at least two on the threaded rod (23), and the outer circumferential surface of the threaded rod (23) is provided with a return groove (24) and an external thread (25), and the surface of the return groove (24) is lower than that of the external thread (25), and the return groove (24) extends along the length direction of the threaded rod (23), and the rotating block (3) is provided with an internal thread hole (32) matched with the external thread (25), and the internal thread hole (32) is provided with an arc-shaped return surface (33), and the central angle of each arc-shaped return surface (33) is less than or equal to that of the return groove (24), and the sum of the central angles of adjacent arc-shaped return surfaces (33) is greater than that of the return groove (24).

2. The quick release rotor core stack expansion clamp of claim 1, wherein: The central angle of the arc-shaped return surface (33) is equal to 180 degrees, and the rotating block (3) is provided with two, and the central angle of each rotating block (3) is equal to 180 degrees.

3. The quick release rotor core stack expansion clamp of claim 1, wherein: The top of the threaded rod (23) is provided with a limiting top block (26), and the two sides of the limiting top block (26) in the width direction are provided with ear pieces (27).

4. The quick release rotor core stack expansion clamp of claim 1, wherein: The diameter of the spring (22) is greater than that of the upper opening (14), the bottom of the spring (22) abuts against the top of the conical compression block (2), and the top of the spring (22) abuts against the inner side of the upper opening (14).

5. The quick release rotor core stack expansion clamp of claim 2, wherein: The rotating block (3) is made of plastic, and the rotating block (3) is provided with a mounting groove (34) penetrating through the inside, and the mounting groove (34) is provided with a hexagonal nut (35).

6. The quick release rotor core stack expansion clamp of claim 1 or 5, wherein: The outer circumferential surface of the rotating block (3) is provided with friction vertical lines (31), which are arranged around the outer surface of the rotating block (3), and the friction vertical lines (31) extend along the axial direction of the rotating block (3).

7. The quick release rotor core stack expansion clamp of claim 2 or 5, wherein: Adjacent rotating blocks (3) are provided with a plug-in limiting structure, which limits the relative rotation between the rotating blocks (3).

8. The quick release rotor core stack expansion clamp of claim 7, wherein: The plug-in limiting structure includes a plug-in hole (41) and a plug-in piece (43), the plug-in hole (41) penetrates through the rotating block (3), the plug-in piece (43) cooperates with the plug-in hole (41), and the plug-in hole (41) is provided with at least two on the rotating block (3).

9. The quick release rotor core stack expansion clamp of claim 8, wherein: The plug-in piece (43) is made of ferromagnetic material, the top of the plug-in piece (43) is provided with a limiting block (44), the diameter of the limiting block (44) is greater than that of the plug-in piece (43), and the top of the plug-in hole (41) is provided with a limiting hole (42) matched with the limiting block (44).

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