Stator bolt for motor

Abstract

The utility model discloses a stator bolt for a motor, which belongs to the technical field of fasteners, solves the problem that a shell of an existing device is easy to fall off from the head of the bolt when being vibrated, and comprises a screw rod, the top end of the screw rod is sequentially provided with a flange plate, a first connecting column and a second connecting column from bottom to top, the flange plate, the first connecting column and the second connecting column are sleeved with the limiting protrusion, in the process, the arc face of the limiting protrusion makes contact with the arc face of the second connecting column, the first connecting column and the second connecting column are sleeved with the limiting protrusion, and therefore the buffering piece can be prevented from falling off, and the service life of the limiting protrusion is prolonged. And then the limiting protrusion drives the spring piece to bend towards the side away from the second connecting column, and finally the limiting protrusion is clamped in the annular groove, so that the shell can be limited, and the situation that the shell falls off from the flange plate, the first connecting column and the second connecting column is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener technical field, concretely is a stator bolt for motor. BACKGROUND

[0002] The stator bolt is mainly used for fixing the stator of the motor, ensures that the stator does not move due to vibration when the motor works, thereby ensuring the stable operation of the motor, and the stator bolt is an important component indispensable in the motor, and the quality and performance of the stator bolt have important influence on the overall performance and service life of the motor.

[0003] Through the search, the application book with patent application No. 202122795924.3 discloses a stator bolt assembly, which comprises a bolt, a spring and a buffer column; the bolt comprises a rod part and a head part connected with the top of the rod part; the rod part of the bolt is used for connecting the stator; the head part comprises a flange support plate transitionally connected with the rod part, the top surface of the flange support plate protrudes a thick rod, the size of the flange support plate is greater than the diameter of the thick rod, the top surface of the thick rod protrudes a connecting rod, and the upper recess of the connecting rod forms a blind hole; the spring is sleeved into the thick rod and is attached to the flange support plate; the buffer column is arranged above the connecting rod and is clamped between the bolt and the shell.

[0004] Although the stator bolt assembly realizes the assembly function of one product for two purposes by increasing the diameter of the head part, designing a thick rod to replace the original protruding fixing column on the shell and fixing the spring by the thick rod of the head part of the stator bolt, the shell of the stator bolt assembly is easy to fall off from the head part of the bolt when the shell is vibrated.

[0005] Therefore, we propose a stator bolt for motor. CONTENT OF THE UTILITY MODEL

[0006] In view of the defects of the prior art, the utility model provides a stator bolt for motor, which solves the problem that the shell of the existing device is easy to fall off from the head part of the bolt when the shell is vibrated.

[0007] To achieve the above purpose, the utility model realizes the following technical scheme: a stator bolt for motor, comprising a screw rod, the top end of the screw rod is sequentially provided with a flange plate, a first connecting column and a second connecting column from bottom to top;

[0008] The middle part of the arc surface of the second connecting column is provided with an annular groove, and the top end of the screw rod is further provided with a shell; a buffer piece is arranged between the shell and the flange plate;

[0009] The inner wall of the shell is fixedly installed with spring sheets arranged in an annular array, the side wall of the spring sheet is in contact with the arc surface of the second connecting column, the bottom end of the spring sheet is provided with a limiting protrusion on the side in contact with the arc surface of the second connecting column, and the limiting protrusion is clamped in the inside of the annular groove.

[0010] Preferably, the spring sheet and the limiting protrusion are an integral structure, the cross section of the spring sheet is a circular arc, the inner diameter of the shell is the same as the diameter of the flange plate, the depth inside the shell is the same as the sum of the thicknesses of the flange plate, the first connecting column and the second connecting column, wherein, when the shell is covered outside the flange plate, the first connecting column and the second connecting column, the arc surface of the limiting protrusion is in contact with the arc surface of the second connecting column, then the spring sheet is deformed away from the second connecting column, then the limiting protrusion is clamped inside the annular groove, the limiting protrusion is limited by the annular groove, then the shell is prevented from being separated from the flange plate, the first connecting column and the second connecting column.

[0011] Preferably, the buffer includes a buffer ring and a spiral spring, the spiral spring is arranged between the flange plate and the shell and is arranged in an annular array, both ends of the spiral spring are fixedly provided with the buffer ring, and the buffer ring is made of elastic rubber.

[0012] Preferably, the length of the spiral spring matches the depth inside the shell, the buffer ring at each end of the spiral spring is attached to the top surface inside the shell and the top surface of the flange plate respectively, and the elastic force of the spiral spring is smaller than that of the spring sheet, wherein, by arranging the elastic force of the spiral spring to be smaller than that of the spring sheet, the buffer ring can be prevented from lifting the shell off the flange plate, the first connecting column and the second connecting column.

[0013] Preferably, the bottom of the screw rod is provided with a thread, the top of the screw rod is a smooth rod, the screw rod, the flange plate, the first connecting column and the second connecting column are an integral structure, the screw rod, the flange plate, the first connecting column and the second connecting column are coaxially arranged, the cross section of the first connecting column is a regular hexagon, and a cross-shaped groove is formed in the top surface of the second connecting column, wherein, the integral structure is stable, the first connecting column facilitates the rotation of the screw rod by using a wrench, and the cross-shaped groove facilitates the rotation of the screw rod by using a screwdriver.

[0014] The utility model provides a kind of stator bolt for motor.It has the following advantages:

[0015] 1, the stator bolt for motor, by being covered in the outside of flange plate, first connecting column and second connecting column, in this process, the arc surface of limiting protrusion is in contact with the arc surface of second connecting column, then limiting protrusion will drive spring sheet to bend away from the side of second connecting column, finally limiting protrusion is clamped inside annular groove, i.e. limiting shell, avoid the shell from flange plate, first connecting column and second connecting column drop, solve the problem that the shell of existing device is shaken and easily falls off from the head of bolt;

[0016] 2. The stator bolt for the motor, through the buffer element arranged between the shell and the flange plate, the buffer ring and the coil spring are deformed to absorb the vibration received by the screw rod, and then the buffer element is used to achieve the purpose of shock absorption and noise reduction.

[0017] 3. The stator bolt for the motor, through the setting of the first connecting column, the screw rod is convenient to rotate by using a wrench, and through the setting of the cross-shaped groove, the screw rod is convenient to rotate by using a screwdriver, so that the screw rod is convenient to rotate, and the screw rod is convenient to be screwed into the inside of the hand tool. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic view of the utility model;

[0019] Figure 2 It is a split structure schematic view of the utility model;

[0020] Figure 3 It is a shell structure schematic view of the utility model;

[0021] Figure 4 It is an A place enlarged structure schematic view of the utility model Figure 3 ;

[0022] Figure 5 It is a buffer element structure schematic view of the utility model.

[0023] In the drawing: 1, screw rod; 11, flange plate; 12, first connecting column; 13, second connecting column; 131, cross-shaped groove; 132, annular groove; 2, buffer element; 21, buffer ring; 22, coil spring; 3, shell; 31, spring sheet; 32, limiting protrusion. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Embodiment 1: as Figures 1-5As shown: including screw 1, the top end of screw 1 is provided with flange plate 11, first connecting column 12 and second connecting column 13 from bottom to top in turn, the middle part of the arc surface of second connecting column 13 is provided with annular groove 132, the top end of screw 1 is also provided with shell 3, buffer 2 is arranged between shell 3 and flange plate 11, annular array distributed spring sheet 31 is fixedly installed on the inner wall of shell 3, the side wall of spring sheet 31 is in contact with the arc surface of second connecting column 13, limit protrusion 32 is arranged on the side of the bottom end of spring sheet 31 in contact with the arc surface of second connecting column 13, limit protrusion 32 is clamped in the inside of annular groove 132, spring sheet 31 and limit protrusion 32 are integrally formed structure, the cross section of spring sheet 31 is circular arc, the inner diameter of shell 3 is same with the diameter of flange plate 11, the depth inside shell 3 is same with the sum of the thickness of flange plate 11, first connecting column 12 and second connecting column 13, by sleeving 4 on the outside of flange plate 11, first connecting column 12 and second connecting column 13, in this process, the arc surface of limit protrusion 32 will be in contact with the arc surface of second connecting column 13, then limit protrusion 32 will drive spring sheet 31 to bend away from the side of second connecting column 13, finally limit protrusion 32 is clamped in the inside of annular groove 132, that is, shell 3 can be limited, to avoid the situation that shell 3 falls off from flange plate 11, first connecting column 12 and second connecting column 13;

[0026] Embodiment 2: as shown in Figure 2 、 4 and 5: buffer 2 includes buffer ring 21 and spiral spring 22, spiral spring 22 is arranged between flange plate 11 and shell 3 and is annular array distributed, buffer ring 21 is fixedly installed at both ends of spiral spring 22, buffer ring 21 is elastic rubber material, the length of spiral spring 22 matches the depth inside shell 3, buffer ring 21 at both ends of spiral spring 22 respectively abuts with the top surface inside shell 3 and the top surface of flange plate 11, the elastic force of spiral spring 22 is less than the elastic force of spring sheet 31, by arranging buffer 2 between shell 3 and flange plate 11, by buffer ring 21 and spiral spring 22 to generate deformation and absorb the vibration received by screw 1, then the purpose of shock absorption and noise reduction is realized through buffer 2;

[0027] Embodiment 3: as shown in Figure 2The bottom of the screw rod 1 is provided with a thread, the top of the screw rod 1 is a light pole, the screw rod 1, the flange plate 11, the first connecting column 12 and the second connecting column 13 are integrally formed structures, the screw rod 1, the flange plate 11, the first connecting column 12 and the second connecting column 13 are coaxially arranged, the cross section of the first connecting column 12 is a regular hexagon, the top surface of the second connecting column 13 is provided with a cross-shaped groove 131, through the arrangement of the first connecting column 12, the screw rod 1 is convenient to rotate by using a wrench, through the arrangement of the cross-shaped groove 131, the screw rod 1 is convenient to rotate by using a screwdriver, the purpose of conveniently driving the screw rod 1 to rotate is achieved, so that the screw rod 1 is conveniently screwed into the opposite hand tool.

[0028] The working principle and use process of the utility model: the utility model discloses a motor stator bolt, when using, the threaded portion of screw rod 1 is screwed into the opposite hand tool until the flange plate 11 is attached to the surface of the opposite hand tool, then the buffer piece 2 is sleeved on the outside of flange plate 11, first connecting column 12 and second connecting column 13, the arc surface of limiting protrusion 32 will contact the arc surface of second connecting column 13 in this process, then limiting protrusion 32 will drive spring leaf 31 to bend away from the side of second connecting column 13 until limiting protrusion 32 is clamped in the inside of annular groove 132, at this moment, the other side of the spiral spring 22 is attached to the top of the inner wall of the shell 3, when the screw rod 1 is vibrated, the buffer ring 21 and the spiral spring 22 will be deformed and absorb the vibration of the screw rod 1, then the purpose of shock absorption and noise reduction is realized through the buffer piece 2.

[0029] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, for those skilled in the art, obviously, the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0030] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, the description manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A stator bolt for an electric machine, comprising a screw rod (1), a flange plate (11), a first connecting column (12) and a second connecting column (13) are sequentially arranged from bottom to top at the top end of the screw rod (1); characterized in that An annular groove (132) is arranged in the middle of the arc surface of the second connecting column (13), and a shell (3) is arranged at the top end of the screw rod (1); a buffer piece (2) is arranged between the shell (3) and the flange plate (11); Spring sheets (31) in annular array are fixedly installed on the inner wall of the shell (3), the side wall of the spring sheet (31) is in contact with the arc surface of the second connecting column (13), a limiting protrusion (32) is arranged at the bottom end of the spring sheet (31) on the side in contact with the arc surface of the second connecting column (13), and the limiting protrusion (32) is clamped in the annular groove (132).

2. A stator bolt for an electric machine according to claim 1, characterized in that: The spring sheet (31) and the limiting protrusion (32) are an integral structure, the cross section of the spring sheet (31) is in the shape of a circular arc, the inner diameter of the shell (3) is the same as the diameter of the flange plate (11), and the depth of the shell (3) is the same as the sum of the thicknesses of the flange plate (11), the first connecting column (12) and the second connecting column (13).

3. The stator bolt for an electric machine according to claim 1, characterized in that: The buffer piece (2) comprises a buffer ring (21) and a spiral spring (22), the spiral spring (22) is arranged between the flange plate (11) and the shell (3) and is in annular array, buffer rings (21) are fixedly installed at both ends of the spiral spring (22), and the buffer rings (21) are made of elastic rubber.

4. A stator bolt for an electric machine according to claim 3, characterized in that: The length of the spiral spring (22) matches the depth of the shell (3), the buffer rings (21) at both ends of the spiral spring (22) are respectively attached to the top surface in the shell (3) and the top surface of the flange plate (11), and the elastic force of the spiral spring (22) is smaller than that of the spring sheet (31).

5. The stator bolt for an electric machine of claim 1, wherein: The bottom of the screw rod (1) is provided with a thread, the top of the screw rod (1) is a smooth rod, the screw rod (1), the flange plate (11), the first connecting column (12) and the second connecting column (13) are an integral structure, the screw rod (1), the flange plate (11), the first connecting column (12) and the second connecting column (13) are coaxially arranged, the cross section of the first connecting column (12) is in the shape of a regular hexagon, and a cross-shaped groove (131) is arranged in the top surface of the second connecting column (13).

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