Servo motor with high universality for sewing machine

Abstract

The utility model belongs to the technical field of sewing machines, in particular to a servo motor for a sewing machine with strong generality, which comprises a servo motor body consisting of a driving part, a rear end cover and a front end cover, the driving part comprises a stator and a rotor, the rotor comprises a rotating shaft in the center of the rotor, first fixing lugs are arranged on the peripheral side of the stator at equal intervals, and the front end cover is arranged on the front end cover. Second fixing lugs matched with the first fixing lugs are arranged on the peripheral side of the rear end cover at equal intervals, third fixing lugs matched with the first fixing lugs and the second fixing lugs are arranged on the peripheral side of the front end cover at equal intervals, and an adaptive groove used for containing a boss on a machine head is formed in one side of the front end cover. According to the front end cover, the connecting function of the servo motor body component and the machine head is integrated, a special connecting assembly between the servo motor body and the machine head in the traditional design is abandoned, the front end cover can be compatible with various machine head bosses, a special connecting assembly is not needed, the universality and the interchangeability are improved, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewing machine technical field, specifically strong general-purpose sewing machine servo motor. BACKGROUND

[0002] The servo motor of the sewing machine is the core power driving component of the sewing machine, and provides reliable power support for the high performance and intelligent operation of the modern sewing machine, and is widely used in various industrial sewing machines and high-end household sewing machines.

[0003] The servo motor of the sewing machine in the prior art has the following shortcomings: the connection mode of the traditional sewing machine servo motor and the head usually depends on specific special connecting components, and these connecting components need to be customized and produced according to the size of the connecting parts of different head models, which leads to a significant increase in production cost, because unique connecting parts need to be developed and manufactured for each head, and scale economic production cannot be realized, and in the assembly process, due to the adaptability problem of the connecting components and the head, assembly difficulties are prone to occur, which brings great inconvenience to the research and development, production and after-sales maintenance of enterprises, increases the management cost and maintenance time, therefore, the strong general-purpose sewing machine servo motor is proposed for the above problems. SUMMARY

[0004] In order to make up for the deficiency of the servo motor of the existing sewing machine, a strong general-purpose sewing machine servo motor is proposed.

[0005] The utility model discloses a strong general-purpose sewing machine servo motor, which comprises a servo motor body composed of a driving part, a rear end cover and a front end cover, the driving part comprises a stator and a rotor, the rotor comprises a rotating shaft at its center, the stator is provided with first fixing ears at equal intervals on its periphery, the rear end cover is provided with second fixing ears at equal intervals on its periphery, the second fixing ears are matched with the first fixing ears, the front end cover is provided with third fixing ears at equal intervals on its periphery, the third fixing ears are matched with the first fixing ears and the second fixing ears, a first bearing is assembled on the front end cover, a second bearing is assembled on the rear end cover, the rotating shaft is rotatably connected with the front end cover and the rear end cover through the first bearing and the second bearing at both ends, and an adaptive groove for accommodating a boss on the head is formed on one side of the front end cover.

[0006] Preferably, a slot for assembling a middle shaft on the head is formed at one end of the rotating shaft, a first fixing hole for fixing the middle shaft is formed in the slot extending to the rotating shaft, and a hand wheel is fixedly assembled at the other end of the rotating shaft.

[0007] Preferably, the servo motor body is fixedly assembled with the head through a fixing pull rod, the front end cover and the head are respectively provided with a second fixing hole and a third fixing hole matched with the first fixing hole for fixing the servo motor body, and the fixing pull rod is provided with an adaptive through hole for the fixing bolt.

[0008] Preferably, the front end cover is provided with a through operating hole matched with the first fixing hole.

[0009] Preferably, the outer edge of the front end cover is matched with the inner wall of the external shell.

[0010] Preferably, the inner walls of the front end cover and the rear end cover are provided with reinforcing ribs.

[0011] Preferably, the external shell is provided with a wire winder, and the wire winder comprises a wrench and a movable rubber wheel.

[0012] The utility model discloses a strong general-purpose servo motor for sewing machine, the utility model discloses the design breaks the limitation of traditional sewing machine servo motor and head connection, makes single type servo motor have extensive applicability, and sewing machine production enterprise does not need to customize specific connecting component again for each head type, greatly reduces production cost, and the front end cover is integrated with the head connection function of servo motor body component, discards the special connecting component between servo motor body and head in traditional design, fundamentally simplifies the power transmission system structure of whole sewing machine, and reduces the quantity of parts.

[0013] The utility model provides a strong general-purpose servo motor for sewing machine, the utility model discloses the design breaks the limitation of traditional sewing machine servo motor and head connection, makes single type servo motor have extensive applicability, and sewing machine production enterprise does not need to customize specific connecting component again for each head type, greatly reduces production cost, and the front end cover is integrated with the head connection function of servo motor body component, discards the special connecting component between servo motor body and head in traditional design, fundamentally simplifies the power transmission system structure of whole sewing machine, and reduces the quantity of parts. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the application, and the illustrative embodiment and the description of the utility model are used to explain the utility model and do not constitute improper limitation to the utility model. In the drawings:

[0015] Figure 1 It is the explosion perspective drawing of the servo motor body of the utility model;

[0016] Figure 2 It is the structure perspective drawing of the utility model and the head after assembly;

[0017] Figure 3 It is the sectional view of Figure 2 ;

[0018] Figure 4 It is the structure perspective drawing of the whole and the head of the utility model;

[0019] Figure 5 It is the structure perspective drawing of the whole of the utility model;

[0020] Figure 6 is Figure 5 an external housing sectional view of the electric wire distribution box according to the present application;

[0021] Legend:

[0022] 1, servo motor body; 101, driving part; 1011, stator; 1012, rotor; 10121, rotating shaft; 101211, insertion slot; 101212, first fixing hole; 1013, first fixing lug; 102, rear end cover; 1021, second fixing lug; 1022, second bearing; 103, front end cover; 1031, third fixing lug; 1032, first bearing; 1033, adaptive groove; 1034, second fixing hole; 1035, through operating hole; 2, machine head; 201, boss; 202, middle shaft; 203, third fixing hole; 3, fixed pull rod; 301, adaptive through hole; 4, reinforcing rib; 5, hand wheel; 6, external housing; 7, wire winder; 701, wrench; 702, rubber wheel. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Specific embodiments are given below.

[0025] Please refer to Figures 1-6The utility model discloses a general sewing machine servo motor, including by drive part 101, rear end cover 102, front end cap 103 the servo motor body 1 that constitutes, drive part 101 includes stator 1011, rotor 1012, the rotor 1012 includes the pivot 10121 of its center, the equidistance of stator 1011's circumference side is provided with first fixed ear 1013, the equidistance of rear end cover 102's circumference side is provided with the second fixed ear 1021 with first fixed ear 1013 cooperation, the equidistance of front end cap 103's circumference side is provided with the third fixed ear 1031 with first fixed ear 1013, second fixed ear 1021 cooperation, first bearing 1032 is assembled to front end cap 103, second bearing 1022 is assembled to rear end cover 102, the both ends of pivot 10121 are rotatedly connected with front end cap 103 and rear end cover 102 through first bearing 1032 and second bearing 1022 respectively, the one side of front end cap 103 is seted up with the adaptive recess 1033 for accommodating the boss 201 of head 2,In operation, the rotating shaft 10121 of the rotor 1012 is mounted between the front end cover 103 and the rear end cover 102 through the first bearing 1032 and the second bearing 1022 at both ends, ensuring that the rotating shaft can rotate freely under very small frictional resistance; when the servo motor body 1 is assembled, the second fixed lug 1021 of the rear end cover 102 and the third fixed lug 1031 of the front end cover 103 are respectively accurately positioned with the first fixed lug 1013 of the stator 1011, and are fastened and connected by penetrating the fixed screws, forming a compact and stable internal structure of the servo motor body 1 as a whole; when the servo motor body 1 is mounted on the head 2, since the adaptive groove 1033 has a relatively large accommodating space, the geometric shape and size tolerance thereof are specially designed to be compatible with various protrusions 201 of different sizes on the market; in the initial assembly, the protrusion 201 of the head 2 can be smoothly embedded in the adaptive groove 1033 (the adaptive groove 1033 can be set according to actual design requirements), thereby preliminarily achieving the connection and positioning of the servo motor body 1 and the head 2, and to some extent, the differences in the size of the connection part of different head 2 models can be adapted, thereby providing a good foundation condition for subsequent further fixation and power transmission.

[0026] Further, one end of the rotating shaft 10121 is provided with a slot 101211 for assembling the middle shaft 202 of the head 2, and the rotating shaft 10121 extending into the slot 101211 is provided with a first fixing hole 101212 for fixing the middle shaft 202; the other end of the rotating shaft 10121 is fixedly assembled with the hand wheel 5; in operation, in the assembly, the middle shaft 202 of the head 2 is inserted along the slot 101211 of the rotating shaft 10121, so that the middle shaft 202 is tightly fitted with the inner wall of the slot 101211, thereby ensuring the concentricity of the middle shaft 202 and the rotating shaft 10121 in the radial direction; when the middle shaft 202 is inserted into the appropriate position, the middle shaft 202 and the rotating shaft 10121 are firmly locked in the axial direction by installing a jack screw in the first fixing hole 101212.

[0027] Further, the servo motor body 1 is fixedly assembled with the machine head 2 through the fixed pull rod 3, the front end cover 103 and the machine head 2 are respectively provided with a second fixing hole 1034 and a third fixing hole 203 for fixing the servo motor body 1, and the fixed pull rod 3 is provided with an adaptive through hole 301 for the fixed bolt to pass through; during operation, the servo motor body 1 also needs to be fixedly connected with the machine head 2, the fixed bolt passes through the corresponding hole of the fixed pull rod 3, then passes through the second fixing hole 1034 of the front end cover 103 and is screwed, then the fixed screw passes through the adaptive through hole 301, the fixed screw is slid according to the position of the third fixing hole 203 and is moved to the third fixing hole 203 of the machine head 2, and then is screwed, so that the servo motor body 1 is fixedly connected on the machine head 2; this fixing mode utilizes the tensile strength of the fixed pull rod 3 and the fastening force of the fixed bolt, forms a stable connection structure, and the fixed pull rod 3 has the advantages of simple structure, reliability and high universality.

[0028] Further, the front end cover 103 is provided with a through operation hole 1035 matched with the first fixing hole 101212; during operation, when the fixing part for fixing the middle shaft 202 and the rotating shaft 10121 is installed or disassembled, the screwdriver can directly contact the fixing part through the through operation hole 1035 of the front end cover 103, and the operator can conveniently tighten or loosen the fixing part from outside without disassembling the front end cover 103 or other related parts, so that the operator can quickly access the operation part and flexibly operate the tool in a limited space during maintenance or adjustment of the connection between the middle shaft 202 and the rotating shaft 10121, and the operation convenience and efficiency are improved.

[0029] Further, the outer edge of the front end cover 103 is matched with the inner wall of the external machine shell 6; during operation, the outer edge of the front end cover 103 is in close contact with and matched with the inner wall of the external machine shell 6 during the overall assembly of the sewing machine, the shape and size of the outer edge of the front end cover 103 are accurately designed, and an appropriate gap or interference fit is maintained between the outer edge of the front end cover 103 and the inner wall of the external machine shell 6 to realize positioning function, so that the structural stability and balance of the entire sewing machine are improved.

[0030] Further, the inner walls of the rear end cover 102 and the front end cover 103 are provided with reinforcing ribs 4; during operation, the reinforcing ribs 4 are used as structural reinforcing parts inside the rear end cover 102 and the front end cover 103, and can effectively disperse and transmit the forces such as vibration, axial force, radial force or torque reaction force generated during operation of the servo motor body 1, so that the structural rigidity of the rear end cover 102 and the front end cover 103 is enhanced, the anti-vibration performance and mechanical stability of the entire servo motor are improved, and the service life is prolonged.

[0031] Further, the external casing 6 is equipped with a wire winder 7, which comprises a spanner 701 and a movable rubber wheel 702; in operation, the wire winder 7 is fixedly equipped on the external casing 6, which makes the wire winder 7 integrated with the electric control and the motor, and through the plate spanner 701, the rubber wheel 702 is tightly attached to the inner side plane of the hand wheel 5, when the hand wheel 5 rotates, the rubber wheel 702 rotates and the wire winder 7 rotates, realizing the winding function.

[0032] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The basic principles, main features and advantages of the present application have been shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A versatile servo motor for sewing machines, characterized in that: The servo motor body (1) includes a drive unit (101), a rear end cover (102), and a front end cover (103). The drive unit (101) includes a stator (1011) and a rotor (1012). The rotor (1012) includes a central shaft (10121). The stator (1011) has first fixing ears (1013) equidistantly arranged on its periphery. The rear end cover (102) has second fixing ears (1021) equidistantly arranged on its periphery that cooperate with the first fixing ears (1013). The front end cover (103) has second fixing ears (1021) equidistantly arranged on its periphery that cooperate with the first fixing ears (1013). A third fixed ear (1031) is provided to cooperate with a first fixed ear (1013) and a second fixed ear (1021). A first bearing (1032) is mounted on the front end cover (103), and a second bearing (1022) is mounted on the rear end cover (102). The two ends of the rotating shaft (10121) are rotatably connected to the front end cover (103) and the rear end cover (102) respectively through the first bearing (1032) and the second bearing (1022). A matching groove (1033) is provided on one side of the front end cover (1033) for accommodating the boss (201) on the machine head (2).

2. The versatile servo motor for sewing machines according to claim 1, characterized in that: One end of the rotating shaft (10121) is provided with a slot (101211) for mounting the central shaft (202) on the machine head (2). A first fixing hole (101212) for fixing the central shaft (202) is provided on the rotating shaft (10121) extending into the slot (101211). A handwheel (5) is fixedly mounted on the other end of the rotating shaft (10121).

3. The versatile servo motor for sewing machines according to claim 1, characterized in that: The servo motor body (1) is fixedly assembled with the head (2) by a fixing rod (3). The front end cover (103) and the head (2) are respectively provided with a second fixing hole (1034) and a third fixing hole (203) for fixing the servo motor body (1). The fixing rod (3) is provided with an adapter through hole (301) for the fixing bolt to pass through.

4. A versatile servo motor for sewing machines according to claim 1, characterized in that: The front end cover (103) has a through operating hole (1035) that cooperates with the first fixing hole (101212).

5. A versatile servo motor for sewing machines according to claim 1, characterized in that: The outer edge of the front cover (103) is adapted to the inner wall of the outer casing (6).

6. A versatile servo motor for sewing machines according to claim 1, characterized in that: The inner walls of both the rear end cover (102) and the front end cover (103) are provided with reinforcing ribs (4).

7. A versatile servo motor for sewing machines according to claim 5, characterized in that: The outer housing (6) is equipped with a winding device (7), which includes a wrench (701) and a movable rubber wheel (702).

Images