CN214938288U

CN214938288U - Assembly structure of sewing machine mop wheel

Info

Publication number: CN214938288U
Application number: CN202121240241.5U
Authority: CN
Inventors: 李海挺
Original assignee: Taizhou Snoke Electronic Science And Technology Co ltd
Current assignee: Taizhou Snoke Electronic Science And Technology Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-11-30
Anticipated expiration: 2031-06-03

Abstract

The utility model provides an assembly structure of sewing machine mop wheel belongs to sewing machine auxiliary assembly technical field. The cloth dragging wheel of the sewing machine solves the problems that a belt of an existing cloth dragging wheel of the sewing machine is large in transmission abrasion, and the swing stability of a connecting rod portion is poor. This assembly structure of sewing machine mop wheel, including being used for the mounting panel that links firmly with the sewing machine casing, be provided with motor, rocking arm and mop wheel on the mounting panel, the mop wheel activity assembly in the outer end of rocking arm, and this mop wheel is driven rotatoryly by the main shaft of motor, is provided with the coaxial arrangement structure who makes rocking arm and motor swing with the centre of a circle between rocking arm and the motor. The utility model has the advantages of reasonable design, simply, shorten the main shaft of motor and the transmission interval of mop wheel, it is less to cause the main shaft of motor to drive the rotatory transmission wearing and tearing of mop wheel, and the rocking arm is stable for the concentric swing structure of the main shaft of motor, and wearing and tearing are few, and stability is high, long service life.

Description

Assembly structure of sewing machine mop wheel

Technical Field

The utility model belongs to the technical field of sewing machine auxiliary assembly, a assembly structure of sewing machine mop wheel is related to.

Background

In order to ensure the smoothness of the sewing cloth during the sewing process of the cloth, the sewing machine on the market adopts a rear dragging device which can drag the cloth backwards and can drive a dragging wheel to move upwards.

For example, Chinese patent numbers are: "201720775965.7", the authorization notice number is: CN207259725U A cloth dragging wheel device of a sewing machine, which comprises a mounting bracket, a first motor, a second motor, a connecting rod part, a dragging wheel, a connecting mechanism and a belt transmission device, wherein the mounting bracket is connected with the connecting rod part, the dragging wheel is fixedly connected to the connecting rod part, the first motor and the second motor are both fixedly connected to the mounting bracket, the first motor is connected with the dragging wheel through the belt transmission device, so that the first motor drives the dragging wheel to transmit, the second motor is connected with the connecting rod part through the connecting mechanism, and in a natural state, the connecting mechanism presses down the connecting rod part to trigger the second motor, and the second motor drives the connecting rod part to lift up, thereby driving the dragging wheel to lift up; the mounting bracket and the link portion are pivotally connected to each other such that the link portion pivots about the pivot axis.

In the structure, the first motor is arranged at the upper end of the mounting bracket and drives the tug to rotate through the belt transmission device; due to the structure, the first motor and the tug are relatively far away, so that the belt in the belt transmission device is long in arrangement and drives the tug to rotate through the turning at the pivot, and when the belt is long in arrangement, the transmission resistance of the belt is large, large transmission abrasion exists, and the structure stability is poor; in addition, the mounting bracket is hinged with the connecting rod part through a pivot, the connecting rod part needs to swing relative to the pivot frequently, and the connecting rod part has swinging abrasion, so that the swinging stability of the connecting rod part is poor, and the service life is short.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, the motor assembles in the articulated department of rocking arm and mounting panel, and the main shaft of this rocking arm and motor is concentric, and mutually noninterfere, the assembly structure of sewing machine mop wheel that structural stability is high.

The purpose of the utility model can be realized by the following technical proposal: an assembly structure of a cloth dragging wheel of a sewing machine comprises an installation plate fixedly connected with a sewing machine shell, wherein a motor, a rocker arm and the cloth dragging wheel are arranged on the installation plate, the cloth dragging wheel is movably assembled at the outer end of the rocker arm and is driven by a main shaft of the motor to rotate, and a coaxial installation structure which enables the rocker arm and the motor to swing in the same circle center is arranged between the rocker arm and the motor; the coaxial arrangement structure include concentric cover, concentric cover axial sleeve locate the main shaft of motor and be fixed in on the mounting panel, the inner of rocking arm the lantern ring has, the lantern ring of rocking arm locate with the axial cover concentric cover on, and this lantern ring and concentric cover relative rotation cooperation, concentric cover and lantern ring between be provided with and prevent that the lantern ring from taking place the stop device of axial float displacement on concentric cover.

The main purpose of this assembly structure of sewing machine mop wheel is: when the rocker arm is assembled, the rocker arm is assembled in a hinged mode by taking a main shaft of the motor as a circle center, the hinge fulcrum of the rocker arm and the main shaft of the motor are concentric and do not interfere with each other by arranging the concentric sleeve, when the rocker arm swings concentrically with the main shaft of the motor relative to the concentric sleeve, the rocker arm is stable in structure and avoids swinging abrasion, the motor is assembled to the inner end of the rocker arm, the main shaft of the motor drives the mop wheel to rotate, the rotating structure of the mop wheel is stable, transmission abrasion between the main shaft of the motor and the mop wheel is reduced, the structural stability is high, and the service life is long.

In the above assembling structure of the mop wheel of the sewing machine, a bearing is arranged between the lantern ring and the concentric sleeve, and the bearing is used for a spacer for relatively rotating and matching the lantern ring and the concentric sleeve. The lantern ring and the concentric sleeve can be effectively prevented from rotating and wearing relatively through the arrangement of the bearing, the concentricity of the lantern ring and the concentric sleeve is ensured, and when the bearing is assembled between the lantern ring and the concentric sleeve, the outer end face of the bearing is flush with the outer end faces of the concentric sleeve and the lantern ring.

In foretell assembly structure of sewing machine mop wheel, stop device include spacing end cover, spacing end cover establish with the axial cover the main shaft of motor on, and this spacing end cover is fixed in the mounting panel through the fastener, this bearing, lantern ring both and spacing end cover axial spacing support and lean on. The purpose of setting up like this is that the lantern ring prevents that lantern ring, bearing from taking place axial displacement when relative rotation swings on concentric cover through the bearing, and structural stability is high.

In the above-mentioned assembly structure of sewing machine mop wheel, the concentric sleeve on circumference interval distribution have a plurality of be axial setting through hole one, spacing end cover on circumference interval distribution have a plurality of be axial setting through hole two, this through hole one, through hole two axial one-to-one correspondence, the fastener pass corresponding through hole one, through hole two and link firmly on the mounting panel. When in actual use, the fastener is a bolt; the purpose of setting up like this is that convenient spacing end cover and concentric cover, lantern ring are stable assembly with the axial.

In the above assembling structure of the mop wheel of the sewing machine, the inner diameter of the trepanning of the concentric sleeve is larger than the outer diameter of the main shaft of the motor, and the concentric sleeve and the main shaft of the motor are axially sleeved at intervals. The purpose of setting up like this is that prevent that there is the rotational wear in main shaft and the concentric cover of motor, and structural stability is good.

In the above-mentioned assembly structure of sewing machine mop wheel, the mop wheel set up in the outer end of rocking arm through the pivot, this pivot cover is equipped with belt pulley one, the main shaft axial of motor extend to concentric cover outside, the extension pot head of the main shaft of this motor is equipped with belt pulley two, is provided with the drive belt between belt pulley one and the belt pulley two. The purpose that sets up like this is that the main shaft of motor drives the mop wheel rotating-structure stability, can also carry out the transmission speed governing through the wheel diameter that changes not equidimension belt pulley one, belt pulley two.

In the above assembling structure of the mop wheel of the sewing machine, the rocker arm is further fixedly provided with a housing which is used for covering the outside of the transmission belt, two ends of the housing are respectively provided with a housing groove, and the first belt pulley and the second belt pulley are respectively positioned in the corresponding housing groove. The purpose of setting up like this can effectively prevent belt pulley one, belt pulley two and drive belt damage, stable in structure.

Compared with the prior art, the assembly structure of the sewing machine mop wheel has the advantages that: the structure design is reasonable and simple, the transmission distance between the main shaft of the motor and the mop wheel is shortened, the transmission abrasion of the main shaft of the motor for driving the mop wheel to rotate is less, the rocker arm is stable in structure relative to the concentric swing of the main shaft of the motor, the abrasion is less, the stability is high, and the service life is long.

Drawings

Fig. 1 is a perspective view of the assembling structure of the cloth dragging wheel of the sewing machine.

FIG. 2 is a schematic sectional view showing the assembling structure of the cloth dragging wheel of the sewing machine.

Fig. 3 is an exploded perspective view of the mounting structure of the cloth dragging wheel of the sewing machine.

In the figure, 1, a sewing machine housing; 2. mounting a plate; 3. a motor; 4. a rocker arm; 5. a mop wheel; 6. a concentric sleeve; 7. a collar; 8. a bearing; 9. a limiting end cover; 10. a first through hole; 11. a second through hole; 12. a first belt pulley; 13. a second belt pulley; 14. a transmission belt; 15. a housing; 16. a cover slot position.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, the assembly structure of the cloth dragging wheel of the sewing machine mainly comprises an installation plate 2 fixedly connected with a sewing machine shell 1, wherein a motor 3, a rocker arm 4 and the cloth dragging wheel 5 are arranged on the installation plate 2, the cloth dragging wheel 5 is movably assembled at the outer end of the rocker arm 4, the cloth dragging wheel 5 is driven by a main shaft of the motor 3 to rotate, and a coaxial installation structure which enables the rocker arm 4 and the motor 3 to swing in the same circle center is arranged between the rocker arm 4 and the motor 3; in actual manufacturing, the coaxial mounting structure is implemented by the following specific modes: mainly by concentric cover 6, concentric cover 6 axial cover locate motor 3's main shaft, and be fixed in on the mounting panel 2, the inner of rocking arm 4 has a lantern ring 7, the lantern ring 7 of rocking arm 4 with the axial cover locate concentric cover 6 on, and this lantern ring 7 and concentric cover 6 relative rotation fit, when practical application, be provided with bearing 8 between this lantern ring 7 and the concentric cover 6, and this bearing 8 is used for lantern ring 7 and the concentric cover 6 relative rotation fit's spacer.

In actual manufacturing, a limiting device for preventing the lantern ring 7 from generating axial movement displacement on the concentric sleeve 6 is arranged between the concentric sleeve 6 and the lantern ring 7; the specific implementation mode of the limiting device is as follows: the motor mainly comprises a limiting end cover 9, wherein the limiting end cover 9 is coaxially sleeved on a main shaft of the motor 3, the limiting end cover 9 is fixed on the mounting plate 2 through a fastener, and the bearing 8 and the lantern ring 7 are axially limited and abutted against the limiting end cover 9; specifically, the method comprises the following steps: the actual assembly structure of the limit end cover 9 is as follows: a plurality of axially arranged through holes I10 are circumferentially distributed on the concentric sleeve 6 at intervals, a plurality of axially arranged through holes II 11 are circumferentially distributed on the limiting end cover 9 at intervals, the through holes I10 and the through holes II 11 are axially in one-to-one correspondence, and the fasteners penetrate through the corresponding through holes I10 and the corresponding through holes II 11 and are fixedly connected to the mounting plate 2; in practical application, in order to avoid the rotation abrasion of the main shaft of the motor 3 and the concentric sleeve 6, the inner diameter of the sleeve hole of the concentric sleeve 6 is larger than the outer diameter of the main shaft of the motor 3, and the concentric sleeve 6 and the main shaft of the motor 3 are axially sleeved at intervals.

In actual manufacturing, the mop wheel 5 is arranged at the outer end of the rocker arm 4 through a rotating shaft, the rotating shaft is sleeved with a first belt pulley 12, a main shaft of the motor 3 axially extends out of the concentric sleeve 6, the extending end of the main shaft of the motor 3 is sleeved with a second belt pulley 13, and a transmission belt 14 is arranged between the first belt pulley 12 and the second belt pulley 13; the rocker arm 4 is further fixedly provided with a housing 15 used for covering the transmission belt 14, two ends of the housing 15 are respectively provided with a housing groove 16, and the first belt pulley 12 and the second belt pulley 13 are respectively positioned in the corresponding housing groove 16.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. An assembly structure of a cloth dragging wheel of a sewing machine comprises an installation plate (2) fixedly connected with a sewing machine shell (1), wherein a motor (3), a rocker arm (4) and the cloth dragging wheel (5) are arranged on the installation plate (2), the cloth dragging wheel (5) is movably assembled at the outer end of the rocker arm (4), and the cloth dragging wheel (5) is driven to rotate by a main shaft of the motor (3), and the assembly structure is characterized in that a coaxial installation structure which enables the rocker arm (4) and the motor (3) to swing in the same circle center is arranged between the rocker arm (4) and the motor (3); coaxial arrangement structure include concentric cover (6), concentric cover (6) axial cover locate the main shaft of motor (3) and be fixed in on mounting panel (2), the inner of rocking arm (4) have a lantern ring (7), lantern ring (7) of rocking arm (4) locate with the axial cover concentric cover (6) on, and this lantern ring (7) and concentric cover (6) relative rotation cooperation, concentric cover (6) and lantern ring (7) between be provided with and prevent that lantern ring (7) from taking place the stop device of axial float displacement on concentric cover (6).

2. An assembling structure of a sewing machine mop wheel according to claim 1, characterized in that a bearing (8) is arranged between the lantern ring (7) and the concentric sleeve (6), and the bearing (8) is used for a spacer for the lantern ring (7) and the concentric sleeve (6) to be matched with each other in a relatively rotating way.

3. The assembly structure of the mop wheel of the sewing machine according to claim 2, characterized in that the limiting device comprises a limiting end cover (9), the limiting end cover (9) is coaxially sleeved on the main shaft of the motor (3), the limiting end cover (9) is fixed on the mounting plate (2) through a fastener, and the bearing (8) and the sleeve ring (7) are axially limited and abutted against the limiting end cover (9).

4. The assembly structure of the mop wheel of the sewing machine according to claim 3, wherein a plurality of axially arranged first through holes (10) are circumferentially distributed on the concentric sleeve (6) at intervals, a plurality of axially arranged second through holes (11) are circumferentially distributed on the limiting end cover (9) at intervals, the first through holes (10) and the second through holes (11) are axially in one-to-one correspondence, and the fasteners penetrate through the corresponding first through holes (10) and the corresponding second through holes (11) and are fixedly connected to the mounting plate (2).

5. An assembling structure of a cloth dragging wheel of a sewing machine according to claim 1, 2, 3 or 4, characterized in that the inner diameter of the sleeve hole of the concentric sleeve (6) is larger than the outer diameter of the main shaft of the motor (3), and the concentric sleeve (6) and the main shaft of the motor (3) are axially sleeved at intervals.

6. The assembly structure of the mop wheel of the sewing machine according to claim 5, characterized in that the mop wheel (5) is arranged at the outer end of the rocker arm (4) through a rotating shaft, the rotating shaft sleeve is provided with a first belt pulley (12), the main shaft of the motor (3) axially extends out of the concentric sleeve (6), the extending end of the main shaft of the motor (3) is sleeved with a second belt pulley (13), and a transmission belt (14) is arranged between the first belt pulley (12) and the second belt pulley (13).

7. The assembly structure of the mop wheel of the sewing machine according to claim 6, wherein a cover (15) for covering the transmission belt (14) is fixedly arranged on the rocker arm (4), cover grooves (16) are respectively arranged at two ends of the cover (15), and the first belt pulley (12) and the second belt pulley (13) are respectively positioned in the corresponding cover grooves (16).