CN217814647U

CN217814647U - Clutch of sewing machine

Info

Publication number: CN217814647U
Application number: CN202221440868.XU
Authority: CN
Inventors: 李琦; 周佳辉
Original assignee: Xian Typical Industry Co Ltd
Current assignee: Xian Typical Industry Co Ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-11-15
Anticipated expiration: 2032-06-10

Abstract

The utility model relates to a clutch of sewing machine. The lower shaft of the existing sewing machine belongs to a shaft, when the torque of a motor is too large, the machine is seized, and the phenomenon that parts are abraded and sewing materials are damaged due to the overload alarm of a main shaft is caused. The technical scheme of the utility model comprises a coupler pad which is clamped on a coupler seat, and a coupler bush is sleeved in a synchronous wheel component and fixed by screws; the coupling seat is pressed on the coupling bush, holes are uniformly distributed on a circular ring of the coupling bush, a spherical groove corresponding to the holes on the coupling bush is arranged on a belt baffle of the synchronous wheel assembly, and the steel balls are arranged in the holes of the coupling bush and clamped in the spherical groove on the inner plane of the synchronous wheel assembly. The utility model discloses be provided with the steel ball in the clutch, when the machine moment of torsion is greater than the rated torque of clutch, the steel ball drops and fills up an outside power for the bullet, makes synchronizing wheel subassembly and shaft coupling seat separation, and the clutch stops, and the protection machine is not stung.

Description

Clutch of sewing machine

Technical Field

The utility model relates to a sewing machine technical field, concretely relates to sewing machine clutch.

Background

The lower shaft of the existing sewing machine belongs to a shaft, when the torque of a motor is too large, the machine is seized, and the phenomenon that parts are abraded and sewing materials are damaged due to the overload alarm of a main shaft is caused.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a simple structure, protection machine do not become seized sewing machine clutch.

For solving the problems existing in the prior art, the technical scheme of the utility model is that: a clutch for a sewing machine, comprising: the coupler comprises a coupler pad, a coupler seat, a coupler bushing, a synchronizing wheel assembly and steel balls, wherein the coupler pad is clamped on the coupler seat, and the coupler bushing is sleeved in the synchronizing wheel assembly and fixed through screws; the coupling seat is pressed on the coupling bush, holes are uniformly distributed on a circular ring of the coupling bush, a spherical groove corresponding to the holes on the coupling bush is arranged on a belt baffle of the synchronous wheel assembly, and the steel balls are arranged in the holes of the coupling bush and clamped in the spherical groove on the inner plane of the synchronous wheel assembly.

Furthermore, the synchronizing wheel component comprises a belt baffle and a synchronizing wheel which are integrally arranged, the spherical groove is arranged on the synchronizing wheel component, and a fastening ring and a screw seat are integrally arranged at the centers of two side surfaces of the belt baffle.

Furthermore, two washers and an elastic cushion are arranged between the coupling bushing and the coupling seat, and the elastic cushion is arranged between the two washers.

Further, the coupling seat is supported on the plane at the front end of the coupling bushing through the second jackscrew, the other two jackscrews are supported on the shaft of the coupling bushing, and the two gaskets and the elastic pad are limited between the coupling bushing and the coupling seat.

Furthermore, 3 holes are uniformly distributed on the circular ring of the coupler bush.

Furthermore, the diameter of the steel ball is 2-5mm larger than that of the ball-shaped groove.

Compared with the prior art, the utility model has the advantages as follows:

1. the utility model discloses be provided with the steel ball in the clutch, when the machine moment of torsion is greater than the rated torque of clutch, the steel ball drops and fills up an outside power for the bullet, makes synchronizing wheel subassembly and shaft coupling seat separation, and the clutch stops, and the protection machine is not stung.

2. The utility model discloses simple structure, it is practical convenient.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic diagram of a coupling pad structure;

FIG. 4 is a schematic structural view of a synchronizing wheel assembly;

FIG. 5 is another schematic view of the synchronizing wheel assembly.

Description of the labeling: 1-a coupler cushion, 2-a coupler seat, 3-a screw, 4-a washer, 5-an elastic cushion, 6-a coupler bush, 7-a synchronous wheel component, 8-a steel ball, 9-a jackscrew I and 10-a jackscrew II;

7-1-fastening ring, 7-2-belt block, 7-3-, 7-4-screw seat and 7-5-spherical groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model relates to a clutch of a sewing machine, which comprises a coupling pad 1, a coupling seat 2, a screw 3, a washer 4, a spring pad 5, a coupling bush 6, a synchronous wheel component 7, a steel ball 8 and a jackscrew I9, as shown in figures 1 and 2;

the coupler cushion 1 is clamped on the coupler seat 2, and the coupler bush 6 is sleeved in the synchronous wheel assembly 7 and fixed through a screw 3; the coupler seat 2 is pressed on the coupler bush 6, two washers 4 and an elastic pad 5 are arranged between the coupler bush 6 and the coupler seat 2, the elastic pad 5 is arranged between the two washers 4, the coupler seat 2 is propped on the plane of the front end of the coupler bush 6 through a jackscrew II 10, the other two jackscrews II 10 are propped on the shaft of the coupler bush 6, and the two washers 4 and the elastic pad 5 are limited between the coupler bush 6 and the coupler seat 2; 3 holes are uniformly distributed on a circular ring of the coupler bush 6, spherical grooves 7-5,3 steel balls 8 corresponding to the holes on the coupler bush 6 are arranged on a belt baffle 7-2 of the synchronizing wheel assembly 7 and are arranged in the three holes of the coupler bush 6 and clamped in the three spherical grooves 7-5 on the inner plane of the synchronizing wheel assembly 7, the synchronizing wheel assembly 7 is fixed at one end of an oil pump shaft of the sewing machine through a top thread I9, and the coupler cushion 1 is connected at one end of a lower shaft of the sewing machine.

The synchronous wheel component 7 comprises a belt baffle 7-2 and a synchronous wheel 7-3 which are integrally arranged, a spherical groove 7-5 is arranged on the belt baffle 7-2, a clamping ring 7-1 and a screw seat 7-4 are integrally arranged at the centers of two side surfaces of the belt baffle 7-2, the screw seat 7-4 extends into a cylindrical hole of the coupler bush 6, and the diameter of the steel ball 8 is 2-5mm larger than that of the spherical groove 7-5.

As shown in fig. 4 and 5.

The utility model discloses a working process: the clutch has a nominal torque by applying a force to the spring washer 5 via the coupling seat 2. Starting sewing machine, spindle motor's power can be through belt transmission to synchronizing wheel subassembly 7 on, the clutch begins to rotate, appears transshipping when the machine, and when motor torque was greater than the rated torque of clutch, steel ball 8 received the revolving force and can break away from out from the three circular slot of synchronizing wheel subassembly 7 internal planes, and steel ball 8 receives external force and can be compressed when breaking away from the circular slot and bullet pad 5. The synchronous wheel assembly 7 and the coupling seat 2 can be separated into two parts, so that the coupling pad 1 stops rotating, the lower shaft connected with the coupling pad 1 also stops rotating, the protection effect is achieved, and meanwhile, the motor spindle overload alarm achieves double protection. When the clutch is recovered, the sewing machine needs to be closed, the coupler seat 2 is prevented from rotating by clamping a hexagonal wrench on the first jackscrew 10, the synchronous wheel assembly 7 is rotated by clamping a hexagonal wrench on the first jackscrew 9, and the clutch is recovered when the steel balls 8 are placed in the three through holes of the coupler bush 6 and fall in the three circular grooves of the plane in the synchronous wheel assembly 7.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A clutch for a sewing machine, comprising: the coupler comprises a coupler pad (1), a coupler seat (2), a coupler bush (6), a synchronizing wheel assembly (7) and steel balls (8), wherein the coupler pad (1) is clamped on the coupler seat (2), and the coupler bush (6) is sleeved in the synchronizing wheel assembly (7) and fixed through a screw (3); the coupler seat (2) is pressed on the coupler bush (6), holes are uniformly distributed on a circular ring of the coupler bush (6), spherical grooves (7-5) corresponding to the holes on the coupler bush (6) are formed in a belt baffle (7-2) of the synchronizing wheel assembly (7), and steel balls (8) are arranged in the holes of the coupler bush (6) and clamped in the spherical grooves on the inner plane of the synchronizing wheel assembly (7).

2. A sewing machine clutch as claimed in claim 1, wherein: the synchronous wheel component (7) comprises a belt baffle (7-2) and a synchronous wheel (7-3) which are integrally arranged, a spherical groove (7-5) is arranged on the belt baffle (7-2), and a clamping ring (7-1) and a screw seat (7-4) are integrally arranged at the center of two side faces of the belt baffle (7-2).

3. A sewing machine clutch according to claim 1 or 2, wherein: the coupling is characterized in that two gaskets (4) and an elastic pad (5) are arranged between the coupling bushing (6) and the coupling seat (2), and the elastic pad (5) is arranged between the two gaskets (4).

4. A sewing machine clutch as claimed in claim 3, wherein: the coupling seat (2) is supported on the plane at the front end of the coupling bush (6) through the second jackscrew, the other two jackscrews are supported on the shaft of the coupling bush (6), and the two gaskets (4) and the elastic pad (5) are limited between the coupling bush (6) and the coupling seat (2).

5. A sewing machine clutch as claimed in claim 4, wherein: the ring of the coupling bush (6) is uniformly provided with 3 holes.

6. A sewing machine clutch as claimed in claim 5, wherein: the diameter of the steel ball (8) is 2-5mm larger than that of the ball-shaped groove (7-5).