CN211367975U

CN211367975U - Main shaft fixing device of sewing machine motor

Info

Publication number: CN211367975U
Application number: CN201921247189.9U
Authority: CN
Inventors: 朱国强
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-04
Filing date: 2019-08-04
Publication date: 2020-08-28
Anticipated expiration: 2029-08-04

Abstract

The utility model discloses a sewing machine motor spindle fixing device, including the fixed sleeving, the cover is equipped with the bearing on the fixed sleeving, the fixed sleeving is interference fit with the shaft hole of bearing, be provided with open first jack on the fixed sleeving's the right-hand member face, it has movable sleeve to peg graft in the first jack, movable sleeve is clearance fit with first jack, a plurality of bar breachs have been seted up on the movable sleeve's the circumference lateral wall, a plurality of arc clamp splices are cut apart into with movable sleeve's circumference lateral wall to the bar breach, be provided with open second jack on the movable sleeve's the right-hand member face, movable sleeve's left end face middle part is provided with the screw hole, the through-hole has been seted up with the corresponding position of screw hole on the fixed sleeving, be provided with locking screw in the through-hole, locking screw threaded connection is in the screw hole. The utility model discloses can realize the fixed to motor spindle simply swiftly, improve motor spindle's installation effectiveness, be convenient for carry out the dismouting.

Description

Main shaft fixing device of sewing machine motor

Technical Field

The utility model relates to a sewing machine technical field specifically is a sewing machine motor spindle fixing device.

Background

A sewing machine is a machine that uses one or more sewing threads to form one or more stitches in a material to be sewn, thereby interweaving or stitching one or more layers of material.

The sewing machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewed stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient. And derives the artistic forms of hand-push embroidery, computer embroidery, etc.

The sewing machine motor is the drive unit of sewing machine, and the main shaft of current sewing machine motor generally all is in the same place with motor fixed connection, inconvenient dismouting, when needing to be changed and maintain, dismouting efficiency is lower.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sewing machine motor spindle fixing device can realize the fixing to motor spindle simply and swiftly, has improved motor spindle's installation effectiveness, is convenient for carry out the dismouting to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a sewing machine motor spindle fixing device comprises a fixed sleeve, wherein a bearing is sleeved on the fixed sleeve, the fixed sleeve is in interference fit with a shaft hole of the bearing, an open first jack is arranged on the right end face of the fixed sleeve, a movable sleeve is inserted in the first jack, the movable sleeve is in clearance fit with the first jack, the left end of the movable sleeve abuts against the inner side wall of the first jack, the length of the movable sleeve is equal to the depth of the first jack, a plurality of strip-shaped notches are formed in the circumferential side wall of the movable sleeve, the strip-shaped notches are arranged on the circumferential side wall of the movable sleeve at equal angles and are 2-4, the length of each strip-shaped notch is 1/3-2/3 of the length of the movable sleeve, and the circumferential side wall of the movable sleeve is divided into a plurality of arc-shaped clamping blocks by the strip-shaped notches, the movable sleeve is characterized in that an open second jack is arranged on the right end face of the movable sleeve, an expanding opening is formed in the right end of the second jack, a threaded hole is formed in the middle of the left end face of the movable sleeve, a through hole is formed in the position, corresponding to the threaded hole, of the fixed sleeve, a locking screw is arranged in the through hole, and the locking screw is in threaded connection with the threaded hole.

Preferably, a protection tube is fixedly welded on the right end face of the fixing sleeve, and the protection tube is arranged on the outer side of the screw head of the locking screw.

Compared with the prior art, the beneficial effects of the utility model are that:

through set up a plurality of bar breachs on movable sleeve, and then cut apart into a plurality of arc clamp splices with movable sleeve's circumference lateral wall, the cooperation of rethread locking screw, through-hole and screw hole is fixed movable sleeve, when using with motor spindle plug-in the second jack alright realize fixed to motor spindle, easy operation is swift, has improved motor spindle's installation effectiveness, makes this fixing device be convenient for carry out the dismouting simultaneously.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a right-side schematic view of the present invention;

fig. 3 is a schematic cross-sectional view of the present invention;

fig. 4 is a schematic cross-sectional view of the fixing sleeve of the present invention;

fig. 5 is a schematic structural diagram of the movable sleeve of the present invention.

In the figure: 1. fixing the sleeve; 2. a bearing; 3. a first jack; 4. an active cannula; 5. a strip-shaped notch; 6. an arc-shaped clamping block; 7. a second jack; 8. a threaded hole; 9. a through hole; 10. locking the screw; 11. flaring; 12. and (5) protecting the tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution:

a sewing machine motor spindle fixing device comprises a fixed sleeve 1, wherein a bearing 2 is sleeved on the fixed sleeve 1, the shaft hole of the fixed sleeve 1 and the shaft hole of the bearing 2 are in interference fit, an open first jack 3 is arranged on the right end face of the fixed sleeve 1, a movable sleeve 4 is inserted in the first jack 3, the movable sleeve 4 and the first jack 3 are in clearance fit, the left end of the movable sleeve 4 abuts against the inner side wall of the first jack 3, the length of the movable sleeve 4 is equal to the depth of the first jack 3, so that the movable sleeve 4 cannot protrude out of the first jack 3, a plurality of strip-shaped notches 5 are formed in the circumferential side wall of the movable sleeve 4, the strip-shaped notches 5 divide the circumferential side wall of the movable sleeve 4 into a plurality of arc-shaped clamping blocks 6, the strip-shaped notches 5 are arranged on the movable sleeve 4, and further divide the circumferential side wall of the movable sleeve 4 into a plurality of arc-shaped clamping blocks 6, when the motor spindle is used, the motor spindle is inserted into the second jack 7, the arc-shaped clamping blocks 6 clamp the motor spindle tightly, so that the motor spindle can be fixed, the operation is simple and rapid, 3 bar-shaped notches 5 are arranged on the circumferential side wall of the movable sleeve 4 at equal angles, the circumferential side wall of the movable sleeve 4 is divided into 3 arc-shaped clamping blocks 6, the length of each bar-shaped notch 5 is 1/3-2/3 of the length of the movable sleeve 4, so that the motor spindle can be easily inserted into the second jack 7, the right end face of the movable sleeve 4 is provided with the open second jack 7, the right end of the second jack 7 is provided with a flaring 11 to facilitate the insertion of the motor spindle, the middle part of the left end face of the movable sleeve 4 is provided with a threaded hole 8, the position of the fixed sleeve 1 corresponding to the threaded hole 8 is provided with a through hole 9, and the through hole 9 is provided with a locking screw, locking screw 10 threaded connection fixes movable sleeve 4 through locking screw 10, through-hole 9 and the cooperation of screw hole 8 in screw hole 8, is convenient for carry out the dismouting.

Specifically, a protection tube 12 is fixedly welded on the right end face of the fixing sleeve 1, and the protection tube 12 is arranged on the outer side of the screw head of the locking screw 10 to effectively protect the locking screw 10.

The structure principle is as follows: during the use, insert movable sleeve 4 in first jack 3, pass through 9 screw in screw holes 8 of through-hole with locking screw 10 again, and then fix movable sleeve 4, when fixing motor spindle, insert motor spindle in second jack 7, through set up a plurality of bar breachs 5 on movable sleeve 4, and then cut apart into a plurality of arc clamp splice 6 with movable sleeve 4's circumference lateral wall, carry out fixed centre gripping through arc clamp splice 6 to motor spindle, alright completion motor spindle's fixing, motor spindle's installation effectiveness has been improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sewing machine motor main shaft fixing device, includes adapter sleeve (1), its characterized in that: the bearing (2) is sleeved on the fixed sleeve (1), the shaft holes of the fixed sleeve (1) and the bearing (2) are in interference fit, an open first jack (3) is arranged on the right end face of the fixed sleeve (1), a movable sleeve (4) is connected in the first jack (3) in a plugging manner, the movable sleeve (4) and the first jack (3) are in clearance fit, the left end of the movable sleeve (4) abuts against the inner side wall of the first jack (3), the length of the movable sleeve (4) is equal to the depth of the first jack (3), a plurality of bar notches (5) are formed in the circumferential side wall of the movable sleeve (4), the bar notches (5) are arranged on the circumferential side wall of the movable sleeve (4) at equal angles and are 2-4, and the length of each bar notch (5) is 1/3-2/3 of the length of the movable sleeve (4), bar breach (5) are cut apart into a plurality of arc clamp splices (6) with the circumference lateral wall of activity sleeve pipe (4), be provided with open second jack (7) on the right-hand member face of activity sleeve pipe (4), the right-hand member of second jack (7) is provided with flaring (11), the left end face middle part of activity sleeve pipe (4) is provided with screw hole (8), through-hole (9) have been seted up with screw hole (8) corresponding position on adapter sleeve pipe (1), be provided with locking screw (10) in through-hole (9), locking screw (10) threaded connection is in screw hole (8).

2. A sewing machine motor main shaft fixing device according to claim 1, characterized in that: the right end face of the fixed sleeve (1) is fixedly welded with a protection tube (12), and the protection tube (12) is arranged on the outer side of a screw head of the locking screw (10).