CN206620038U

CN206620038U - Stepper motor

Info

Publication number: CN206620038U
Application number: CN201720331618.5U
Authority: CN
Inventors: 王伟庭; 孙大军; 马培成
Original assignee: Shenzhen Masanori Intellectual Control Ltd By Share Ltd
Current assignee: Shenzhen Masanori Intellectual Control Ltd By Share Ltd
Priority date: 2017-03-30
Filing date: 2017-03-30
Publication date: 2017-11-07
Anticipated expiration: 2027-03-30

Abstract

The utility model discloses a kind of stepper motor, and the stepper motor includes：Casing, in the cylindric setting that upper end is open, and the upper end of its perisporium is provided with gap；Upper lid, covers the open setting of the casing；Bobbin, is cylindrical in shape and the stator around the stepper motor, rotor are set；Winding coil, is wound in the bobbin；Outlet structure, located at the opening position；The outlet structure has lateral surface, and the lateral surface is concavely provided with the axially extending wire hole being provided with bit-avoiding slot, the bit-avoiding slot along the casing；And external wire, one end is connected to the winding coil, and the other end is passed out of described wire hole；Wherein, the lateral surface of the outlet structure is concordant with the outer peripheral face of the casing or radially inner side of outer peripheral face positioned at the casing.Technical solutions of the utility model can realize that stepper motor is designed without line protecting box, so as to reduce the space of stepper motor occupancy, improve the practicality of stepper motor.

Description

Stepping motor

Technical Field

The utility model relates to a step motor technical field, in particular to step motor.

Background

The existing stepping motor generally comprises a patch panel, the patch panel is used for connecting an external lead and a winding coil, generally, the axial structure in a cylindrical shell of the stepping motor is arranged compactly, the patch panel can only be arranged on one radial side of the shell, and in order to prevent the connection on the patch panel from being damaged, a line protecting box is required to be arranged at the patch panel, so that the line protecting box can be understood as protruding out of the cylindrical shell of the shell, therefore, the whole occupied space of the stepping motor is large, and the structure optimization of an electric appliance applied to the stepping motor is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a step motor, the line box structure that protects that aims at solving step motor among the prior art leads to step motor whole occupation space great, is unfavorable for the technical problem of the configuration optimization of the electrical apparatus that step motor used.

In order to achieve the above object, the present invention provides a stepping motor, including:

the shell is arranged in a cylindrical shape with an open upper end, and the upper end of the peripheral wall of the shell is provided with a notch;

the upper cover is arranged to cover the opening of the shell;

the winding framework is cylindrical and is arranged around the rotor of the stepping motor;

the winding coil is wound on the winding framework;

the wire outlet structure is arranged at the notch; the wire outlet structure is provided with an outer side surface, a position avoiding groove is concavely arranged on the outer side surface, and a wire outlet hole extending along the axial direction of the shell is arranged in the position avoiding groove; and

one end of the external lead is connected with the winding coil, and the other end of the external lead penetrates out of the wire outlet hole; wherein,

the outer side surface of the wire outlet structure is flush with the outer peripheral surface of the shell or is positioned on the radial inner side of the outer peripheral surface of the shell.

Preferably, the winding framework comprises a first sub-framework and a second sub-framework which are arranged along the axial direction and connected, the first sub-framework is positioned at the upper end of the second sub-framework, and the wire outlet structure comprises a wire outlet plate arranged at the upper end of the first sub-framework and a threading plate arranged at the upper end of the second sub-framework;

the wire outlet plate is provided with a plurality of wire outlet holes, and the threading plate is provided with threading holes;

the external lead comprises a first lead and a second lead, the first lead penetrates through the wire outlet hole to be connected with the winding coils around the first sub-framework, and the second lead penetrates through the wire outlet hole and the threading hole to be connected with the winding coils around the second sub-framework.

Preferably, the outlet plate comprises an outlet plate body, a first limiting part and a second limiting part;

the wire outlet plate body is vertically arranged at the upper end of the first sub-framework, the outer side surface comprises an outer plate surface of the wire outlet plate body, the outer plate surface is an arc surface consistent with the radian of the peripheral wall of the shell, the position avoiding groove is concavely arranged on the outer plate surface of the wire outlet plate body, and a plurality of wire outlet holes are formed in the position avoiding groove;

the first limiting parts are arranged on two sides of the outlet plate body and are in limiting fit with the peripheral wall of the shell around the opening;

the second limiting part is arranged on the upper part of the wire outlet plate body and is in limiting fit with the upper cover.

Preferably, the notch of the avoiding groove faces the radial outer side of the casing, the upper end of the avoiding groove is open, and the lower groove wall of the avoiding groove is provided with a plurality of wire outlet holes;

the wire outlet holes comprise first wire outlet holes which are positioned at two sides and used for the first lead to be led out and second wire outlet holes which are positioned at the middle part and used for the second lead to be led out.

Preferably, the first limiting part is a limiting convex rib which extends outwards from two sides of the outlet plate body, and the peripheral wall of the casing around the opening abuts against the side surface of the limiting convex rib which is located on the radial outer side of the casing.

Preferably, the second limiting part is an insertion block extending upwards from two sides of the outlet plate body, and the upper cover is provided with an insertion hole corresponding to the insertion block; the upper cover covers the opening of the casing, and the insertion block is inserted into the insertion hole in an adaptive mode.

Preferably, the threading plate comprises a threading plate body and a third limiting part;

the threading plate body is horizontally arranged at the upper end of the second sub-framework, the outer side surface comprises a side surface of the threading plate body, the side surface is an arc surface consistent with the radian of the peripheral wall of the shell, and the threading hole penetrates through the position, corresponding to the wire outlet hole, of the plate surface of the threading plate body;

the third limiting parts are arranged on two sides of the threading plate body and are in limiting fit with the peripheral wall of the shell around the opening.

Preferably, the third limiting part is a limiting block extending outwards from two sides of the threading plate body, and the peripheral wall of the casing around the notch abuts against the side face of the limiting block located on the radial outer side of the casing.

Preferably, the upper end of the peripheral wall of the casing on both sides of the notch is provided with a positioning notch, and the periphery of the upper cover is provided with a positioning flange corresponding to the two positioning notches and the upper edge of the notch; the upper cover covers the opening of the shell, and the positioning flange is inserted between the two positioning notches.

Preferably, step motor still includes the gear assembly, the gear assembly is located between upper cover and the wire winding skeleton, the gear assembly connect in step motor's motor shaft.

The utility model discloses technical scheme is through making step motor's external conductor lug connection in the winding coil to setting up outlet structure in the opening department of casing, this outlet structure's the concave groove of keeping away that is equipped with of lateral surface, keeping away the inslot and being equipped with the wire hole that is used for drawing external conductor, outlet structure's lateral surface with the outer peripheral face parallel and level of casing or being located the radial inboard of the outer peripheral face of casing, so, under the prerequisite that the external conductor of protection is qualified for the next round of competitions, compare the step motor who has the protective wire box among the prior art, avoided the outlet structure protrusion to set up in the radial outside of casing, reduced the whole shared space of step motor, do benefit to the installation of step motor in electrical equipment, improved step motor's practicality.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a stepping motor of the present invention;

FIG. 2 is an exploded view of the stepper motor of FIG. 1;

FIG. 3 is a schematic structural diagram of the first sub-skeleton of FIG. 2;

FIG. 4 is a schematic structural diagram of the second sub-skeleton of FIG. 2;

FIG. 5 is a schematic structural diagram of the housing of FIG. 2;

fig. 6 is a schematic structural view of the upper cover in fig. 2.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)	Reference numerals	Name (R)
						1	Casing (CN)	11	Opening of the container	12	Positioning notch
13	Positioning opening	2	Upper cover	21	Jack hole
						22	Positioning flange	23	Mounting convex plate	3	Motor shaft
4	Rotor	5	External connecting wire	51	First conductive line
						52	Second conductive line	6	Winding framework	61	First sub-skeleton
611	Positioning column	62	Second sub-skeleton	7	Gear assembly
						8	Wire outlet structure	81	Outer side surface	811	Outer plate surface
812	Side surface	82	Wire outlet plate	821	Outlet board body
						821a	Avoiding groove	821b	Wire outlet hole	821c	First wire outlet hole
821d	Second wire outlet hole	822	Spacing convex rib	823	Plug block
						83	Threading board	831	Threading board body	831a	Threading hole
832	Limiting block	833	Locating hole

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

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 efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a step motor.

In the embodiment of the present invention, referring to fig. 1 and 2, the stepping motor includes:

a casing 1 which is arranged in a cylindrical shape with a sealed bottom end; the peripheral wall of the upper end of the casing 1 is provided with a notch 11;

the upper cover 2 is arranged to cover the opening of the machine shell 1;

the motor shaft 3 is arranged at the upper cover 2;

the rotor 4 and the stator 5 are arranged in the machine shell 1;

a winding frame 6 which is cylindrical and arranged around the rotor 4 of the stepping motor;

a winding coil (not shown) wound around the bobbin 6;

the outlet structure 8 is arranged at the notch 11; the outlet structure 8 is provided with an outer side surface 81, a position avoiding groove 821a is concavely arranged on the outer side surface 81, and an outlet hole 821b extending along the axial direction of the machine shell 1 is arranged in the position avoiding groove 821 a; and

one end of the external lead 5 is connected to the winding coil, and the other end of the external lead penetrates out of the wire outlet 821 b; wherein,

the outer side surface 81 of the outlet structure 8 is flush with the outer peripheral surface of the casing 1 or is located radially inside the outer peripheral surface of the casing 1.

It can be understood that the design of the adapter plate is eliminated by the stepping motor of the present application, and the winding coil is directly connected (welded) with the external lead 5; it can be understood that the bobbin is further provided with two middle pole plates (not shown), and the bobbin wound with the winding coil and the two middle pole plates jointly form a stator of the stepping motor; in this embodiment, the stepping motor is a gear stepping motor, and includes a gear assembly 7, but in other embodiments, the stepping motor may be a hybrid stepping motor; in this embodiment, the gear assembly 7 is disposed between the upper cover 2 and the bobbin 6, and is connected to the motor shaft 3 to drive the motor shaft 3 to extend out of the upper cover 2 or be accommodated in the housing 1. In addition, it can be understood that the outermost surface 812 of the outlet structure 8 in the radial direction of the casing 1 is the above-mentioned outer side surface 81; in this embodiment, the outer side 81 of the outlet structure 8 is flush with the outer peripheral surface of the casing 1, so as to enhance the overall appearance integrity of the stepping motor; of course, in other embodiments, the outer side surface 81 of the outlet structure 8 may also be located radially inside the outer peripheral surface of the casing 1.

The utility model discloses technical scheme is through 5 lug connection in the winding coil of step motor's external conductor, and set up outlet structure 8 in casing 1's opening 11 department, this outlet structure 8's lateral surface 81 is concave to be equipped with keeps away a groove 821a, keep away and be equipped with the wire hole 821b that is used for drawing external conductor 5 in the groove 821a, outlet structure 8's lateral surface 81 and casing 1's outer peripheral face parallel and level or be located the radial inboard of casing 1's outer peripheral face, so, under the prerequisite of protecting external conductor 5 and being qualified for the next round of competitions, compare the step motor who has the line protection box among the prior art, 8 protrusions in the radial outside setting of casing 1 of outlet structure have been avoided, the whole shared space of step motor has been reduced, do benefit to the installation of step motor in electrical equipment, step motor's practicality has.

Further, referring to fig. 2 to 4, the bobbin 6 includes a first sub-bobbin 61 and a second sub-bobbin 62 which are axially arranged and connected, the first sub-bobbin 61 is located at an upper end of the second sub-bobbin 62, and the wire outlet structure 8 includes a wire outlet plate 82 which is located at an upper end of the first sub-bobbin 61 and a wire threading plate 83 which is located at an upper end of the second sub-bobbin 62; a plurality of wire outlet holes 821b are formed in the wire outlet plate 82, and a threading hole 831a is formed in the threading plate 83; the external lead 5 includes a first lead 51 and a second lead 52, the first lead 51 passes through the wire outlet hole 821b to connect the winding coil around the first sub-bobbin 61, and the second lead 52 passes through the wire outlet hole 821b and the wire passing hole 831a to connect the winding coil around the second sub-bobbin 62. In this embodiment, the stepping motor is a two-phase motor, and certainly, in other embodiments, the stepping motor may be other multi-phase motors; it can be understood that, with such an arrangement, the external lead 5 of the first sub-framework 61 and the second sub-framework 62 are led out through the outlet plate 82, so as to facilitate external connection; meanwhile, the threading plate 83 is arranged between the second sub-framework 62 and the outgoing plate to limit the second lead 52 connected with the winding coil of the second sub-framework 62 to be led out towards the outgoing plate 82, so that the second lead 52 is prevented from being scattered and inconvenient to connect with the outgoing plate 82. It should be noted that the present design is not limited to this, and in other embodiments, the wire outlet plate 82 is disposed at the lower end of the second sub-frame 62, and the threading portion is disposed at the lower end of the first sub-frame 61.

Further, referring to fig. 3, the outlet plate 82 includes an outlet plate body 821, a first limiting portion and a second limiting portion; the outlet plate body 821 is vertically arranged at the upper end of the first sub-framework 61, the outer side surface 81 comprises an outer plate surface 811 of the outlet plate body 821, the outer plate surface 811 is an arc surface consistent with the radian of the peripheral wall of the shell 1, an avoiding groove 821a is concavely arranged on the outer plate surface 811 of the outlet plate body 821, and a plurality of outlet holes 821b are arranged in the avoiding groove 821 a; the first limiting parts are arranged at two sides of the outlet plate body 821 and are in limiting fit with the peripheral wall of the shell 1 around the opening 11; the second limiting part is arranged on the upper part of the outlet plate body 821 and is in limiting fit with the upper cover 2. It can be understood that, with such an arrangement, the outlet plate 82 is ensured to have the outlet function, and meanwhile, the structure of the casing 1 and the upper cover 2 is utilized to effectively limit the position of the outlet plate 82, so that the installation is stable. It should be noted that the design is not limited to this, and in other embodiments, the outlet plate 82 may only include a outlet plate body 821, and the outlet plate body 821 is fixed to the notch 11 by screw locking or other detachable connection.

Furthermore, the notch of the avoiding groove 821a faces the radial outer side of the casing 1, the upper end of the avoiding groove 821a is open, and the lower groove wall of the avoiding groove 821a is provided with a plurality of wire outlet holes 821 b; the wire outlet holes 821b include a first wire outlet hole 821c for the first wire 51 to be taken out and a second wire outlet hole 821d for the second wire 52 to be taken out. In this embodiment, there are two first wire outlet holes 821c, one second wire outlet hole 821d, and a through hole communicated with the second wire outlet hole 821d along the axial direction of the casing 1 is formed on the outer plate surface 811 of the wire outlet plate body 821 to facilitate the second wire 52 to be installed in the second wire outlet hole 821 d; of course, the design is not limited thereto, and in other embodiments, the second wire hole 821d is disposed on two sides of the lower groove wall, and the first wire hole 821c is disposed in the middle of the lower groove wall.

Further, referring to fig. 1 and 3, the first limiting portion is a limiting rib 822 extending outward from both sides of the outlet plate body 821, and the circumferential wall of the housing 1 around the opening 11 abuts against the side surface of the limiting rib 822 located on the radial outer side of the housing 1. It will be appreciated that, with this arrangement, the inner surface of the peripheral wall of housing 1 can resist the outward pressure applied by limiting rib 822, thereby preventing outward movement of outlet plate 82. It should be noted that, the design is not limited to this, in other embodiments, the first position-limiting portion may also be specifically configured to be another structure that can abut against the peripheral wall of the casing 1, and the first position-limiting portion and the peripheral wall of the casing 1 may further be connected by a screw locking or a fastening structure.

Further, referring to fig. 3 and 6, the second limiting portion is an insertion block 823 respectively extending upward from two sides of the outlet plate body 821, and the upper cover 2 is provided with an insertion hole 21 corresponding to the insertion block 823; the upper cover 2 covers the opening of the casing 1, and the plug 823 is adapted to the plug jack 21. It can be understood that, with such an arrangement, the hole wall of the insertion hole 21 of the upper cover 2 can limit the shaking of the outlet plate body 821 caused by the horizontal external force, so as to make the installation of the outlet plate 82 more stable. It should be noted that the design is not limited thereto, and in other embodiments, the second position-limiting portion may also have other structures, and the second position-limiting portion and the upper cover 2 may also be connected by other methods such as screw locking.

Further, referring to fig. 4, the threading plate 83 includes a threading plate body 831 and a third limiting portion; the threading plate body 831 is horizontally arranged at the upper end of the second sub-framework 62, the outer side surface 81 comprises a side surface 812 of the threading plate body 831, the side surface 812 is an arc surface consistent with the radian of the peripheral wall of the casing 1, and a threading hole 831a penetrates through the position, corresponding to the wire outlet 821b, of the plate surface of the threading plate body 831; the third limiting parts are arranged at two sides of the threading board body 831 and are in limiting fit with the peripheral wall of the casing 1 around the opening 11. In this embodiment, the lower surface of the threading plate body 831 abuts against the lower edge of the notch 11, so that the lower edge of the notch 11 supports the threading plate 83; it can be understood that so set up, when guaranteeing that threading board 83 has the threading function, utilize the structure of casing 1 to carry out effectual spacing to threading board 83, make its installation firm. In this embodiment, a through hole communicating with the threading hole 831a along the axial direction of the casing 1 is formed in the side surface 812 of the threading plate body 831, so as to facilitate the second wire 52 to be loaded into the threading hole 831 a; in addition, the board surface of the threading board body 831 is also provided with a positioning hole 833, and the edge of the lower end surface of the first sub-framework 61 is provided with a positioning column 611 corresponding to the positioning hole 833, so as to realize the stable connection between the threading board body 831 and the first sub-framework 61; of course, the design is not limited thereto, and in other embodiments, other mutually adaptive connecting structures may be further disposed between the threading board body 831 and the first sub-frame 61.

Further, referring to fig. 1 and 4, the third limiting portion is a limiting block 832 extending outward from two sides of the threading board body 831, and the circumferential wall of the casing 1 around the opening 11 abuts against the side surface of the limiting block 832 located on the radial outer side of the casing 1. It will be appreciated that, with this arrangement, the inner surface of the peripheral wall of the housing 1 can resist the outward pressure applied to the limiting block 832, thereby preventing the threading plate 83 from moving outward. It should be noted that, the design is not limited to this, in other embodiments, the third position-limiting portion may also be specifically configured to be another structure that can abut against the peripheral wall of the casing 1, and the third position-limiting portion and the peripheral wall of the casing 1 may further be connected by a screw locking or a fastening structure.

Further, referring to fig. 5 and 6, the upper end of the peripheral wall of the casing 1 on both sides of the notch 11 is provided with a positioning notch 12, and the periphery of the upper cover 2 is provided with a positioning flange 22 corresponding to the upper edges of the two positioning notches 12 and the notch 11; the upper cover 2 covers the opening of the casing 1, and the positioning flange 22 is inserted between the two positioning notches 12. It can be understood that, so set up, make things convenient for the location installation of upper cover 2 and casing 1, improve the convenience of user operation. In this embodiment, the upper end of the peripheral wall of the casing 1 is further provided with three positioning openings 13, the notches 11 and the three positioning openings 13 are symmetrically arranged along the axial direction of the casing 1, the upper cover 2 is provided with another positioning flange 22 corresponding to the positioning opening 13 arranged opposite to the notch 11, an installation convex plate 23 is convexly arranged corresponding to the other two positioning openings 13, and the installation convex plate 23 is provided with a connecting hole so as to facilitate the installation and fixation of the stepping motor in the electric appliance; of course, the design is not limited to this, and in other embodiments, other adaptive positioning structures and mounting structures for connecting with the outside may be further provided between the casing 1 and the upper cover 2.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A stepping motor, comprising:

the upper cover is arranged to cover the opening of the shell;

the winding coil is wound on the winding framework;

2. The stepping motor according to claim 1, wherein the bobbin comprises a first bobbin and a second bobbin arranged and connected in an axial direction, the first bobbin is located at an upper end of the second bobbin, and the wire outlet structure comprises a wire outlet plate arranged at an upper end of the first bobbin and a wire through plate arranged at an upper end of the second bobbin;

3. The stepping motor according to claim 2, wherein said outlet plate comprises an outlet plate body, a first position-limiting portion and a second position-limiting portion;

4. The stepping motor according to claim 3, wherein the notch of the avoiding groove faces the radial outside of the housing and the upper end of the avoiding groove is open, and the lower groove wall of the avoiding groove is provided with a plurality of the wire outlet holes;

5. The stepping motor according to claim 3, wherein said first position-limiting portion is a position-limiting rib extending outward from each of both sides of said outlet plate body, and a circumferential wall of said housing around said notch abuts against a side surface of said position-limiting rib located on a radially outer side of said housing.

6. The stepping motor according to claim 3, wherein the second position-limiting portion is an insertion block extending upward from each of two sides of the outlet plate body, and the upper cover is provided with an insertion hole corresponding to the insertion block; the upper cover covers the opening of the casing, and the insertion block is inserted into the insertion hole in an adaptive mode.

7. The stepping motor according to claim 2, wherein the threading plate comprises a threading plate body and a third limiting part;

8. The stepping motor according to claim 7, wherein the third position-limiting portions are position-limiting blocks respectively extending outward from both sides of the threadplate body, and a circumferential wall of the casing around the notch abuts against a side surface of the position-limiting block located on a radially outer side of the casing.

9. The stepping motor according to claim 1, wherein the upper end of the peripheral wall of the casing on both sides of the opening is provided with a positioning notch, and the periphery of the upper cover is provided with a positioning flange corresponding to the two positioning notches and the upper edge of the opening; the upper cover covers the opening of the shell, and the positioning flange is inserted between the two positioning notches.

10. The stepping motor according to any one of claims 1 to 9, further comprising a gear assembly provided between the upper cover and the bobbin, the gear assembly being connected to a motor shaft of the stepping motor.