Stamping nut fastener for washing machine roller belt pulley

Abstract

The stamping nut fastener comprises a connecting inner ring, a belt pulley outer ring and a rotating shaft, the end of the rotating shaft is fixedly connected with a smooth rod, the connecting inner ring is provided with a first smooth groove, the smooth rod is arranged in the first smooth groove, the rotating shaft is provided with a second smooth through groove, and the second smooth through groove is arranged in the second smooth through groove. A second smooth through groove is formed in the rotating shaft, a fixing plate penetrates through the second smooth through groove, the fixing plate is attached to the face, close to the rotating shaft, of the connecting inner ring, a screw rod is fixedly arranged at the end, away from the rotating shaft, of the smooth rod, and the screw rod is in threaded connection with a first nut. The second smooth through groove is penetrated by a fixing plate, the fixing plate is connected with the connecting inner ring through a bolt and a second nut, when the rotating shaft drives the belt wheel to rotate, torsion is mainly borne by the fixing plate, and if the fixing plate is bent or broken, the fixing plate can be directly detached for replacement, and the belt wheel does not need to be detached.

Description

Technical Field

[0001] The utility model relates to the technical field of fastening a drum washing machine pulley, in particular to a stamping nut fastener for a drum pulley of a washing machine. Background Art

[0002] The drum washing machine is a powerful household washing machine. The transmission mechanism inside the washing machine drives the drum to wash the clothes. The washing pulley is an important component of the transmission mechanism inside the washing machine. The pulley belongs to the hub type part. The connection between the pulley and the motor shaft is fastened by a nut. When the motor shaft drives the pulley to rotate, there is a strong torque between the motor shaft and the pulley. The contact between the pulley and the motor shaft is prone to wear, causing the pulley and the motor shaft to loosen. After loosening, the pulley needs to be removed for repair. Utility Model Content

[0003] 1. Technical problems solved

[0004] In view of the deficiencies in the prior art, the utility model provides a stamped nut fastener for a washing machine drum pulley, wherein the fastener comprises a connecting inner ring and a rotating shaft, wherein the rotating shaft is provided with two smooth through grooves, wherein the two smooth through grooves are penetrated by a fixing plate, and the fixing plate is connected to the connecting inner ring through bolts and two nuts. When the rotating shaft drives the pulley to rotate, the torque is mainly borne by the fixing plate. If the fixing plate is bent or broken, the fixing plate can be directly removed for replacement without removing the pulley, thereby solving the problems raised by the background technology.

[0005] 2. Technical solution

[0006] A stamped nut fastener for a washing machine drum pulley comprises a connecting inner ring, a pulley outer ring and a rotating shaft, the rotating shaft is arranged parallel to a horizontal plane, the end of the rotating shaft is fixedly connected to a smooth rod, a smooth groove 1 is provided on a side of the connecting inner ring close to the rotating shaft, the smooth rod is arranged in the smooth groove 1, a smooth through groove 2 is provided on a side of the rotating shaft close to the smooth rod, the smooth through groove 2 penetrates the rotating shaft, the smooth through groove 2 is penetrated by a fixed plate, the fixed plate is fitted with a side of the connecting inner ring close to the rotating shaft, a screw is fixedly provided on the end of the smooth rod away from the rotating shaft, and the screw is threadedly connected to a nut 1.

[0007] Preferably, a smooth groove 2 is provided on the side of the connecting inner ring away from the rotating shaft, a smooth through groove 1 is provided between the smooth groove 2 and the smooth groove 1, the smooth groove 1, the smooth groove 2 and the smooth through groove 1 are connected, and the axes of the smooth groove 1, the smooth groove 2 and the smooth through groove 1 are on the same horizontal line, the outer diameter of the smooth groove 1 is larger than the outer diameter of the smooth groove 2, the outer diameter of the smooth groove 2 is larger than the outer diameter of the smooth groove 1, the screw passes through the smooth through groove 1 and the smooth groove 2, and the nut 1 is arranged in the smooth groove 2.

[0008] Preferably, mounting holes are respectively provided at the upper and lower ends of the fixing plate, and the mounting holes are arranged in mirror symmetry. Two mirror symmetric smooth grooves three are provided on the side of the connecting inner ring close to the rotating shaft, and the smooth groove three is connected with the mounting hole. Two mirror symmetric smooth grooves four are provided on the end of the connecting inner ring away from the rotating shaft, and the smooth grooves three and four are connected. The outer diameter of smooth groove three is smaller than the outer diameter of smooth groove three. The mounting hole and smooth groove three are penetrated by fixing bolts, and a nut two screwed with the fixing bolt thread is provided in the smooth groove four.

[0009] Preferably, a plurality of splines are fixedly provided on the outer wall of the smooth rod, and the splines are arranged in a circular array. The end face of the smooth rod is fitted with a surface of a smooth groove that is perpendicular to a horizontal plane, and the smooth groove is provided with a spline groove that cooperates with the splines.

[0010] Preferably, the connecting inner ring is arranged inside the outer ring of the pulley, and a plurality of reinforcing ribs are fixedly arranged between the connecting inner ring and the outer ring of the pulley, the reinforcing ribs are arranged in a circular array, one end of the reinforcing rib is fixedly connected to the outer wall of the connecting inner ring, and the other end of the reinforcing rib is fixedly connected to the inner wall of the outer ring of the pulley.

[0011] Preferably, a rubber gasket is arranged in the second smooth groove, the rubber gasket is penetrated by the screw, and the rubber gasket is arranged between the side surface of the second smooth groove perpendicular to the horizontal plane and the nut one.

[0012] 3. Beneficial effects

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The fastener includes a connecting inner ring and a rotating shaft, the rotating shaft is provided with two smooth through grooves, the two smooth through grooves are penetrated by a fixed plate, the fixed plate is connected to the connecting inner ring by two bolts and nuts, when the rotating shaft drives the pulley to rotate, the torque is mainly borne by the fixed plate, if the fixed plate is bent or broken, the fixed plate can be directly removed and replaced without removing the pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a rear view of the structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0018] In the figure: 1, connecting inner ring; 2, outer ring of pulley; 3, rotating shaft; 4, fixing plate; 5, fixing bolt; 6, nut one; 7, rubber gasket; 8, nut two; 101, smooth groove one; 102, smooth groove two; 103, smooth through groove one; 104, smooth groove three; 105, smooth groove four; 1011, spline groove; 201, reinforcing rib; 301, smooth rod; 302, screw rod; 303, smooth through groove two; 3011, spline; 401, mounting hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0020] Example

[0021] Reference Figure 1-3 As shown,

[0022] A stamped nut fastener for a washing machine drum pulley comprises a connecting inner ring 1, a pulley outer ring 2 and a rotating shaft 3, wherein the rotating shaft 3 is arranged parallel to a horizontal plane, and an end of the rotating shaft 3 is fixedly connected to a smooth rod 301, a smooth groove 101 is provided on a side of the connecting inner ring 1 close to the rotating shaft 3, and the smooth rod 301 is arranged in the smooth groove 101, a smooth through groove 2 303 is provided on a side of the rotating shaft 3 close to the smooth rod 301, and the smooth through groove 2 303 penetrates the rotating shaft 3, and the smooth through groove 2 303 is penetrated by a fixing plate 4, and the fixing plate 4 is fitted with a side of the connecting inner ring 1 close to the rotating shaft 3, a screw 302 is fixedly provided on an end of the smooth rod 301 away from the rotating shaft 3, and the screw 302 is threadedly connected to a nut 6, the connecting inner ring 1 is arranged in the pulley outer ring 2, and a plurality of reinforcing ribs 2 are fixedly provided between the connecting inner ring 1 and the pulley outer ring 2. 01, the reinforcing ribs 201 are arranged in a circular array, one end of the reinforcing ribs 201 is fixedly connected to the outer wall of the connecting inner ring 1, and the other end of the reinforcing ribs 201 is fixedly connected to the inner wall of the pulley outer ring 2, the upper and lower ends of the fixing plate 4 are respectively provided with mounting holes 401, the mounting holes 401 are arranged in a mirror-symmetrical manner, the side of the connecting inner ring 1 close to the rotating shaft 3 is provided with two mirror-symmetrical smooth grooves three 104, the smooth groove three 104 is connected with the mounting hole 401, and the end of the connecting inner ring 1 away from the rotating shaft 3 is provided with two mirror-symmetrical smooth grooves four 105, the smooth groove three 104 is connected with the smooth groove four 105, the outer diameter of the smooth groove three 104 is smaller than the outer diameter of the smooth groove three 104, the mounting hole 401 and the smooth groove three 104 are penetrated by the fixing bolt 5, and the smooth groove four 105 is provided with a nut two 8 threadedly engaged with the fixing bolt 5;

[0023] When the fastener fixes the connecting inner ring 1 to the rotating shaft 3, it is achieved by threading the nut 1 6 and the screw 302. The rotating shaft 3 is provided with a smooth through groove 2 303, and the smooth through groove 2 303 is penetrated by the fixing plate 4. The fixing plate 4 is connected to the connecting inner ring 1 by bolts and nuts 2 8, so as to strengthen the connection between the connecting inner ring 1 and the rotating shaft 3. If there is looseness between the nut 1 6 and the screw 302, the fixation between the connecting plate and the connecting inner ring 1 can continue to ensure that the rotating shaft 3 drives the pulley to rotate. When the rotating shaft 3 drives the pulley to rotate, the torque is mainly borne by the fixing plate 4. If the fixing plate 4 is bent or broken, the fixing plate 4 can be directly removed and replaced without removing the pulley. The nut 1 6 and the nut 2 8 are both stamped nuts. The stamped nuts have the advantages of being strong, not easy to deform, having a large bearing force, having a firm connection, having a simple manufacturing process, having a low cost, having a high production efficiency, having a beautiful appearance, having a smooth surface, not easy to rust, and having a long service life.

[0024] The outer wall of the smooth rod 301 is fixedly provided with a plurality of splines 3011, and the splines 3011 are arranged in a circular array. The end face of the smooth rod 301 is in contact with a side of the smooth groove 101 perpendicular to the horizontal plane, and the smooth groove 101 is provided with a spline 3011 groove 1011 that matches the splines 3011.

[0025] The outer wall of the smooth rod 301 is provided with a spline 3011, and the smooth groove 101 is provided with a spline 3011 groove 1011 that cooperates with the spline 3011. The spline 3011 and the spline 3011 groove 1011 cooperate to disperse the torque, which can effectively reduce the torque borne by the fixed plate 4, thereby increasing the service life of the fixed plate 4.

[0026] A rubber gasket 7 is arranged in the second smooth groove 102, and the rubber gasket 7 is penetrated by the screw 302. The rubber gasket 7 is arranged between the side of the second smooth groove 102 perpendicular to the horizontal plane and the nut 1 6;

[0027] The rubber pad can reduce vibration and looseness between the screw 302 and the nut 6, and improve the fixing effect of the nut. The rubber gasket 7 is arranged between the side of the smooth groove 102 perpendicular to the horizontal plane and the nut 6 to reduce the friction between the nut and the connecting inner ring 1, and improve the service life of the nut 6.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stamping nut fastener for a drum pulley of a washing machine, comprising a connecting inner ring (1), a pulley outer ring (2) and a rotating shaft (3), wherein the rotating shaft (3) is arranged parallel to a horizontal plane, and is characterized in that: The end of the rotating shaft (3) is fixedly connected to the smooth rod (301); a smooth groove (101) is provided on the side of the connecting inner ring (1) close to the rotating shaft (3); the smooth rod (301) is arranged in the smooth groove (101); a smooth through groove (303) is provided on the side of the rotating shaft (3) close to the smooth rod (301); the smooth through groove (303) passes through the rotating shaft (3); the smooth through groove (303) is passed through by a fixing plate (4); the fixing plate (4) is fitted with a side of the connecting inner ring (1) close to the rotating shaft (3); a screw (302) is fixedly provided on the end of the smooth rod (301) away from the rotating shaft (3); the screw (302) is threadedly connected to a nut (6).

2. A washing machine drum pulley stamping nut fastener according to claim 1, characterized in that: A smooth groove 2 (102) is provided on a side of the connecting inner ring (1) away from the rotating shaft (3); a smooth through groove 1 (103) is provided between the smooth groove 2 (102) and the smooth groove 1 (101); the smooth groove 1 (101), the smooth groove 2 (102) and the smooth through groove 1 (103) are connected, and the axes of the smooth groove 1 (101), the smooth groove 2 (102) and the smooth through groove 1 (103) are on the same horizontal line; the outer diameter of the smooth groove 1 (101) is larger than the outer diameter of the smooth groove 2 (102); the outer diameter of the smooth groove 2 (102) is larger than the outer diameter of the smooth groove 1 (101); the screw (302) passes through the smooth through groove 1 (103) and the smooth groove 2 (102); and the nut 1 (6) is arranged in the smooth groove 2 (102).

3. A washing machine drum pulley stamping nut fastener according to claim 1, characterized in that: The fixing plate (4) is provided with mounting holes (401) at the upper and lower ends respectively, and the mounting holes (401) are arranged in mirror symmetry. The connecting inner ring (1) is provided with two mirror symmetric smooth grooves (104) on the side close to the rotating shaft (3), and the smooth groove (104) is connected with the mounting hole (401). The connecting inner ring (1) is provided with two mirror symmetric smooth grooves (105) on the end away from the rotating shaft (3), and the smooth grooves (104) and (105) are connected. The outer diameter of the smooth groove (104) is smaller than the outer diameter of the smooth groove (104). The fixing bolt (5) penetrates the mounting hole (401) and the smooth groove (104), and the smooth groove (105) is provided with a nut (8) threadedly engaged with the fixing bolt (5).

4. A washing machine drum pulley stamping nut fastener according to claim 1, characterized in that: The outer wall of the smooth rod (301) is fixedly provided with a plurality of splines (3011), and the splines (3011) are arranged in a circular array. The end face of the smooth rod (301) is in contact with a surface of the smooth groove (101) perpendicular to the horizontal plane, and the smooth groove (101) is provided with a spline groove (1011) that cooperates with the spline (3011).

5. A washing machine drum pulley stamping nut fastener according to claim 1, characterized in that: The connecting inner ring (1) is arranged inside the pulley outer ring (2), and a plurality of reinforcing ribs (201) are fixedly arranged between the connecting inner ring (1) and the pulley outer ring (2), wherein the reinforcing ribs (201) are arranged in a circular array, and one end of the reinforcing rib (201) is fixedly connected to the outer wall of the connecting inner ring (1), and the other end of the reinforcing rib (201) is fixedly connected to the inner wall of the pulley outer ring (2).

6. A washing machine drum pulley stamping nut fastener according to claim 2, characterized in that: A rubber gasket (7) is arranged in the second smooth groove (102), the rubber gasket (7) is penetrated by the screw rod (302), and the rubber gasket (7) is arranged between the side surface of the second smooth groove (102) perpendicular to the horizontal plane and the nut (6).

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