CN207559755U

CN207559755U - Stepper motor

Info

Publication number: CN207559755U
Application number: CN201721745839.3U
Authority: CN
Inventors: 丁维超; 王富冈
Original assignee: Jiangsu Leili Motor Co Ltd
Current assignee: Jiangsu Leili Motor Co Ltd
Priority date: 2017-12-14
Filing date: 2017-12-14
Publication date: 2018-06-29
Anticipated expiration: 2027-12-14

Abstract

The utility model discloses a kind of stepper motors, including outlet box and coil rack, the outlet box includes outlet box main body, the support member being fixedly connected with the outlet box main body and the outlet box terminal being fixedly connected in the support member, and the coil rack has skeleton terminal；The outlet box terminal includes external connection part, and the mating part to radially distribute being connect with external connection part, the mating part to radially distribute is used to merge connection with the matching of the skeleton terminal of coil rack, the spacing L1 of the external connection part of outlet box terminal is less than the spacing L2 of skeleton terminal, and the spacing of the mating part to radially distribute is set as：It becomes larger with one end that the external connection part of outlet box terminal is connect to the one end being connect with skeleton terminal.The utility model solves the connectivity problem of the stepper motor when cancelling wiring board transition connection, while does not influence the coiling of coil rack.

Description

Stepper motor

Technical field

The utility model is related to a kind of stepper motors, belong to stepper motor technical field.

Background technology

Micro-machine is that the every field such as factory automation, family life automation, office automation are widely applied heavy Basic product is wanted, common micro-machine is divided into leaded motor and without lead motor according to the connection mode difference of lead.Its Middle no lead motor is then there was only connector port on motor, and customer's connecting line port is connect by matched interfaces with motor, such as Disclosed in patent CN103401348B.

When customer's connecting line port needs small terminal, i.e., when the spacing between terminal is smaller, motor connectors port needs Matching, i.e., the spacing between terminal in motor connectors port also wants matching and becomes smaller.Patent document Motor disclosed in CN103401348B, using a butt, twice after equidistant bending with customer's connecting line port match, when need When wanting terminal spacing smaller, the spacing of terminal winding portion is also corresponding smaller.In technique, stator winding enameled wire is wound to Terminal winding portion if terminal spacing is too small, can not cross line during coiling in the spacing of terminal, can not realize coiling, Wu Faman Sufficient customer demand.

As disclosed in CN101924452B patents, in no lead stepper motor connector port, using wiring substrate The bonder terminal on the terminal and connector shell at motor skeleton end is connected, realizes the conducting on circuit.In this way Transition, can realize that transition between the big spacing of motor skeleton terminal and the small spacing of customer's connecting line port terminal connects It connects.But this wiring board connection mode can cause a series of problem：First, what wiring board internal electric connected can freely not draw The problem of generator windings are breaking；Secondly, wiring board uses twice welding sequence, thus may occur to weld rosin joint, and pad takes off It falls, tin sweat(ing) is splashed to inside motor, causes the problems such as stuck；Finally, wiring board welding sequence cost is higher.In addition, using PCB After plate, pcb board is mounted in connector shell so that connector shell radial height becomes larger, when client's use occasion is installed When size is restricted, installation requirement can not be met.

Invention content

Technical problem to be solved in the utility model is：A kind of stepper motor is overcome the deficiencies of the prior art and provide, is solved The certainly connectivity problem of the stepper motor when cancelling wiring board transition connection, can meet and connect with the external connection terminals of small spacing The requirement connect, while the coiling of coil rack is not influenced.

In order to solve the above-mentioned technical problem, the technical solution of the utility model is：A kind of stepper motor, including outlet box and Coil rack, the outlet box includes outlet box main body and the outlet box terminal being fixedly connected on outlet box main body, described Coil rack has skeleton terminal；The outlet box terminal includes external connection part and internal coupling part, outlet box terminal The spacing L1 of external connection part be less than or equal to the spacing L2 of skeleton terminal, the internal coupling part of the outlet box terminal is straight It connects and is welded to connect with skeleton terminal.

Further, the external connection part of the outlet box terminal is directly connected to internal coupling part, described internally to connect Socket part point is radial, and the spacing of the internal coupling part is set as：It connect with the external connection part of outlet box terminal One end become larger to the one end being connect with skeleton terminal.

Further, one end of the external connection part connect with one end of internal coupling part and has certain angle, The outlet box terminal is a bending structure on the whole.

Further, the skeleton terminal includes winding portion, middle section and external connection part, the winding portion One end is used for coiling, and one end of the middle section and the other end of winding portion connect and have certain angle, middle section The other end and one end of external connection part connect and there is certain angle, the skeleton terminal is on the whole bending knot twice Structure, whole U-shaped, the internal coupling part of the outlet box terminal and the external connection part of skeleton terminal are welded to connect, real Reveal being electrically connected for wire box terminal and skeleton terminal.

Further, the outlet box terminal further includes and mating part is connect with external connection part, the internal connecting portion Divide and connect with the mating part, the mating part is radial, and the spacing of the mating part is set as：Itself and outlet box One end of the external connection part connection of terminal becomes larger to the one end being connect with the internal coupling part.

Further, one end of external connection part of the outlet box terminal and one end of mating part connect and have one Clamp angle, the other end of the mating part connect with one end of the internal coupling part and have certain angle, it is described go out Wire box terminal is secondary bending structure on the whole.

Further, the skeleton terminal includes winding portion and external connection part, and one end of the winding portion is used for Coiling, the other end of winding portion are connect with external connection part, and skeleton terminal is a bending structure on the whole；The outlet The internal coupling part of box terminal and the external connection part being directly welded to connect of skeleton terminal, realize outlet box terminal and skeleton The electrical connection of terminal.

Further, the radial arrangement for being pressed into internal coupling part is provided on the surface of the outlet box main body Skewed slot, internal coupling part is pressed into and is stuck in skewed slot.

Further, the oblique of the radial arrangement for press-in cooperation part is provided on the surface of the outlet box main body Slot, mating part are pressed into and are stuck in skewed slot.

Further, the winding portion has the sharp of a pushing for one end of coiling relative to the other end of winding portion Angle α.

Further, the outside of the outlet box is B to the distance between motor outer diameter, and motor center is arrived on the outside of outlet box Distance is A, B：Ranging from the 0.25~0.29 of A.

Further, the outside of the outlet box is 4.4mm to the distance between motor outer diameter B, is arrived on the outside of the outlet box The distance A of motor center is 16.4mm.

Further, the skeleton terminal is provided with 5, and 5 skeleton terminal word orders are in the support of coil rack In component.

Above-mentioned technical proposal is employed, the utility model has following advantageous effect：

1) in outlet box and coil rack connection structure, the utility model eliminates wiring board transition connection, on the one hand The cost of product can be reduced, on the other hand avoids the failure mode of wiring board welding, is reduced because the welding of wiring board plate is drawn The bad problem risen, such as：Copper foil comes off, and pcb board welding comes off, rosin joint etc.；

2) the utility model is used to match with the skeleton terminal of coil rack using the mating part to radially distribute, It is connected instead of wiring board transition, disclosure satisfy that the skeleton terminal of coil rack has the requirement of larger spacing L2, in order to coiling, Wire winding needle can cross line doubling from the gap of skeleton terminal, meanwhile, it is capable to which the spacing L1 for meeting outlet box terminal is smaller with suitable Together in the requirement of the external connection terminals of small spacing；

3) it due to eliminating wiring board transition connection, is directly connected to using outlet box terminal and skeleton terminal, outlet box diameter Reduce to thickness, stepper motor overall radial dimension reduces, and facilitates installation, meets the use demand of client, suitable for smaller space In the range of product use；

4) the utility model sets radial skewed slot on outlet box main body, can be in outlet box terminal bending Outlet box terminal is moved towards into progress bending along skewed slot, convenient for the bending of needle, and guiding role is played to outlet box terminal, gone out Wire box terminal is fitted close with skewed slot, is sprung back after being also prevented from outlet box terminal bending.

Description of the drawings

Fig. 1 is the dimensional structure diagram of the outlet box of the utility model；

Fig. 2 is the vertical view of the coil rack of the utility model；

Fig. 3 is the front view of the outlet box of the utility model；

Fig. 4 is the front sectional view of the outlet box of the utility model；

Fig. 5 is the dimensional structure diagram of the outlet box of the utility model；

Fig. 6 is the vertical view of the outlet box in the embodiment one of the utility model；

Fig. 7 is the installation diagram of the outlet box and coil rack in the embodiment one of the utility model；

Fig. 8 is the assembling plan view of the embodiment one of the utility model；

Fig. 9 is the sectional arrangement drawing of the embodiment one of the utility model；

Figure 10 is the sectional view of the coil rack in the embodiment one of the utility model；

Figure 11 is the B portions enlarged drawing of Figure 10；

Figure 12 is the schematic diagram of the loose ends processing in the embodiment one of the utility model；

Figure 13 is the C portions enlarged drawing of Figure 12；

Figure 14 is the dimensional structure diagram of the outlet box in the embodiment two of the utility model；

Figure 15 is the sectional view of the outlet box in the embodiment two of the utility model；

Figure 16 is the front view of the outlet box in the embodiment two of the utility model；

Figure 17 is the dimensional structure diagram of the coil rack in the embodiment two of the utility model；

Figure 18 is the sectional view of the coil rack in the embodiment two of the utility model；

Figure 19 is the installation diagram of the outlet box and coil rack in the embodiment two of the utility model；

Figure 20 is the sectional arrangement drawing of the outlet box and coil rack in the embodiment two of the utility model；

Figure 21 is the integrally-built vertical view of the stepper motor of the utility model；

Figure 22 is the integrally-built side view of the stepper motor of the utility model.

Specific embodiment

In order to which the content for making the utility model is easier to be clearly understood, below according to specific embodiment and combine attached Figure, is described in further detail the utility model.

Embodiment one：

As shown in Figure 1 to 9, a kind of stepper motor, including outlet box 1 and coil rack 2, the outlet box 1 includes outlet The box main body 1-1 and outlet box terminal 1-3 being fixedly connected on outlet box main body 1-1, the coil rack 2 have bone The sub- 2-1 of frame end；The outlet box terminal 1-3 includes external connection part 1-3-1 and is connect with external connection part 1-3-1 The internal coupling part 1-3-2 to radially distribute, the internal coupling part 1-3-2 to radially distribute is for will be right Outer connection part 1-3-1 is electrically connected with the skeleton terminal 2-1 of coil rack, the external connection part 1-3-1 of outlet box terminal 1-3 Spacing L1 be less than the spacing L2 of skeleton terminal 2-1, the external connection part 1-3-1 of outlet box terminal 1-3 uses smaller Away from L1, in order to which suitable for the external connection terminals of small spacing, and skeleton terminal 2-1 uses larger spacing L2, mainly The coiling problem of skeleton terminal is considered, spacing is too small can not to cross line doubling, pass through wiring board transition to cancel existing technology The structure of connection, the spacing of internal coupling part 1-3-2 to radially distribute are set as：Its pair with outlet box terminal One end of outer connection part 1-3-1 connections becomes larger to the one end being connect with skeleton terminal 2-1.

Preferably, as shown in Fig. 6 to 9, outlet box terminal 1-3 is designed as a bending structure on the whole, described externally to connect Socket part is divided one end of 1-3-1 vertical with one end of internal coupling part 1-3-2 and is connect.

Preferably, it as shown in Fig. 6 to 9, is matched for the ease of a bending structure with outlet box terminal 1-3, the bone The sub- 2-1 of frame end is designed as bending structure twice on the whole, whole U-shaped, and specifically, the skeleton terminal 2-1 includes winding section Divide one end of 2-1-1, middle section 2-1-2 and external connection part 2-1-3, the winding portion 2-1-1 for coiling, it is described One end of middle section 2-1-2 is vertical with the other end of winding portion 2-1-1 and connect, the other end of middle section 2-1-2 with One end of external connection part 2-1-3 is vertical and connects, the internal coupling part 1-3-2 and skeleton of the outlet box terminal 1-3 The external connection part 2-1-3 of terminal 2-1 is welded to connect, and realization outlet box terminal is electrically connected with skeleton terminal, is internally connected Part 1-3-2 is approximate with the spacing L2 of skeleton terminal 2-1 with the spacing L3 of the external connection part 2-1-3 ends welded, and ensures The feasibility of welding.Also, the internal coupling part 1-3-2 of outlet box terminal 1-3 is radial, outer with skeleton terminal 2-1 The junction of portion coupling part 2-1-3 is internal in welding in chiasma type rather than the connection mode being mutually parallel of the prior art Coupling part 1-3-2 is easier to tin sticky with external connection part 2-1-3 interconnections, and weld strength is high.

Preferably, as shown in figure 5, in order to improve the operability of the bending of outlet box terminal 1-3, while to outlet box end Guiding role is played in the bending of sub- 1-3, is provided with to be pressed into internal coupling part 1- on the surface of the outlet box main body 1-1 The skewed slot 1-4 of the radial arrangement of 3-2, outlet box terminal 1-3 can move towards progress bending, and be stuck in along skewed slot 1-4 In skewed slot 1-4, convenient for controlling the spacing of internal coupling part 1-3-2, the spacing of skewed slot 1-4 meets size requirement, internally connects As long as in part 1-3-2 press-in skewed slots 1-4, the spacing deviation of internal coupling part 1-3-2 ends is not too large, reduces technique Accumulated error in manufacturing process.

A kind of assembly technology of the outlet box terminal of stepper motor, including

As shown in Fig. 1,3,4, distances of the outlet box terminal 1-3 using spacing as L1 is parallel to motor axis direction and is inserted into outlet In the support member 1-2 of box main body 1-1, then by outlet box terminal 1-3 bendings, form external connection part 1-3-1 and be used for The internal coupling part 1-3-2 coordinated with the skeleton terminal 2-1 of coil rack 2, the internal coupling part 1-3-2 are radial Distribution, the spacing of internal coupling part 1-3-2 are expanded outward by the one end being connect with external connection part 1-3-1, until and bone The sub- 2-1 electrical connections of frame end, the spacing of ends of the internal coupling part 1-3-2 at skeleton terminal 2-1 is L3, and spacing L3 is near The spacing L2 of approximately equal to skeleton terminal 2-1, the part that internal coupling part 1-3-2 stretches out skewed slot 1-4 is used for and skeleton terminal 2-1 Electrical connection.

Preferably, as shown in Fig. 6,7,8, in bending, outlet box terminal 1-3's internally connects the outlet box terminal 1-3 Socket part divides 1-3-2 press-ins to be arranged in the skewed slot 1-4 to radially distribute at outlet box main body 1-1 surfaces.

A kind of assembly method of stepper motor, the assembly technology of the outlet box terminal including above-mentioned stepper motor, is also wrapped The step of including the step of assembling skeleton terminal 2-1 and being electrically connected outlet box terminal 1-3 with skeleton terminal 2-1.

Further, the step of skeleton terminal 2-1 assemblings include,

As shown in Fig. 2,9, by skeleton terminal 2-1 word orders and to be inserted into coil rack 2 perpendicular to the direction of motor shaft Support member in, the spacing of skeleton terminal 2-1 is L2, then skeleton terminal 2-1 is passed through bending twice, bends out U-shaped point Winding portion 2-1-1, middle section 2-1-2 and the external connection part 2-1-3 of cloth, winding portion 2-1-1, middle section 2-1- The spacing of 2 and external connection part 2-1-3 remains that L2 is constant；

After outlet box 1 is assembled with coil rack 2, external connection part 2-1-3 and internal coupling part 1-3-2 is welded, Form turning circuit.

In the present embodiment, the skeleton terminal 2-1 is provided with 5, and 5 skeleton terminals 2-1 is inserted into coil bone simultaneously It is neat to arrange on one wire in the support member of frame 2, so as to the bending simultaneously of 5 needles.

As shown in Figure 10 to 13, before outlet box 1 and coil rack 2 assemble, it is additionally included in the winding portion 2-1-1 The step of upper coiling.

As shown in Figure 12,13, after coiling, the head of winding portion 2-1-1 is pushed into a sharp angle α, plays the work of loose ends With.

Embodiment two：

As shown in Fig. 1 to 4,14 to 16, a kind of stepper motor, including outlet box 1 and coil rack 2, the outlet box 1 wraps It includes wire box main body 1-1 and the integrally formed support member 1-2 of the outlet box main body 1-1 and is fixedly connected on the support Outlet box terminal 1-3 on component 1-2, the coil rack 2 have skeleton terminal 2-1；The outlet box terminal 1-3 include pair Outer connection part 1-3-1, internal coupling part 1-3-2 and radially distributing of being connect with external connection part 1-3-1 Mating part 1-3-3, the internal coupling part 1-3-2 are connect with the mating part 1-3-3, the mating part 1-3-3 Radial, the spacing of the mating part 1-3-3 is set as：It connect with the external connection part 1-3-1 of outlet box terminal One end become larger to the one end being connect with the internal coupling part 1-3-2.

The skeleton terminal 2-1 of the internal coupling part 1-3-2 and coil rack is directly welded, outlet box terminal 1-3's The spacing L1 of external connection part 1-3-1 is less than the spacing L2 of skeleton terminal 2-1, the external connection part of outlet box terminal 1-3 1-3-1 uses smaller spacing L1, in order to suitable for the external connection terminals of small spacing, and skeleton terminal 2-1 use compared with Big spacing L2 mainly considers the coiling problem of skeleton terminal, and spacing is too small can not to cross line doubling.

Preferably, as shown in Figure 14,15,16, outlet box terminal 1-3 is designed as secondary bending structure on the whole, described right One end of outer connection part 1-3-1 is vertical with one end of mating part 1-3-3 and connect；The outlet box terminal is further included and is matched The internal coupling part 1-3-2 of part 1-3-3 connections is closed, the internal coupling part 1-3-2 is used to be electrically connected with skeleton terminal 2-1 It connects, the other end of the mating part 1-3-3 is vertical with one end of the internal coupling part 1-3-2 and connect.

For the ease of being matched with the secondary bending structure of outlet box terminal 1-3, the skeleton terminal 2-1 is designed as on the whole Bending structure, as shown in Figure 17 to 20, the skeleton terminal includes winding portion 2-1-1 and external connection part 2-1-3, One end of the winding portion 2-1-1 is used for coiling, and the other end of winding portion 2-1-1 is connect with external connection part 2-1-3； The external connection part 2-1-3 of the internal coupling part 1-3-2 and skeleton terminal 2-1 of the outlet box terminal 1-3 are welded to connect, Realization outlet box terminal 1-3 is electrically connected with skeleton terminal 2-1's.Under such mode, due to the internal connection of outlet box terminal 1-3 The external connection part 2-1-3 of part 1-3-2 and skeleton terminal 2-1 is axis direction, and solder joint is higher than outlet box and coil Skeleton, so, wicking mode may be used, wicking mode is efficient, and tin sweat(ing) is few, convenient for automation mechanized operation.

Preferably, as shown in figure 5, being provided on the surface of the outlet box main body 1-1 for press-in cooperation part 1-3-3 Radial arrangement skewed slot 1-4, mating part 1-3-3 is pressed into and is stuck in skewed slot 1-4, and outlet box terminal 1-3 can be suitable That skewed slot 1-4 moves towards progress bending, and be stuck in skewed slot 1-4, convenient for controlling the spacing of mating part 1-3-3, skewed slot 1-4's Spacing meets size requirement, as long as in mating part 1-3-3 press-in skewed slots 1-4, the spacing deviation of mating part 1-3-3 ends is not Can be too big, reduce the accumulated error in technique manufacturing process.

As shown in Fig. 1 to 4,14 to 16, distances of the outlet box terminal 1-3 using spacing as L1 is parallel to motor axis direction and is inserted In the support member 1-2 for entering outlet box main body 1-1, then by outlet box terminal 1-3 bendings, external connection part 1-3-1 is formed With the mating part 1-3-3, radial point of the mating part 1-3-3 for coordinating with the skeleton terminal 2-1 of coil rack 2 Cloth, the spacing of mating part 1-3-3 are expanded outward by the one end being connect with external connection part 1-3-1, until with skeleton terminal 2-1 is electrically connected, and the spacing of ends of the mating part 1-3-3 at skeleton terminal 2-1 is L3, and spacing L3 is approximately equal to skeleton The spacing L2 of terminal 2-1, mating part 1-3-3 stretch out the part of skewed slot 1-4 for being electrically connected with skeleton terminal 2-1.

As shown in Figure 14,15,16, the outlet box terminal 1-3 is in bending, the mating part 1- of outlet box terminal 1-3 3-3 press-ins are arranged in the skewed slot 1-4 to radially distribute at outlet box main body 1-1 surfaces.

As shown in Figure 14,15,16, the outlet box terminal 1-3 is further included in bending and is stretched out mating part 1-3-3 Two bending steps of the upward bending in part of skewed slot 1-4, form internal coupling part 1-3-2.

Further, as shown in Figure 17 to 20, the step of skeleton terminal 2-1 assembling, includes,

By skeleton terminal 2-1 word orders and to be inserted into the support member of coil rack 2 perpendicular to the direction of motor shaft, The spacing of skeleton terminal 2-1 is L2, then by skeleton terminal 2-1 by one of bending, and skeleton terminal 2-1 is divided into L-shaped setting Winding portion 2-1-1 and external connection part 2-1-3；

Such as Figure 21, the distance between 1 outside of outlet box to motor outer diameter is B, and that B is specially 4.4mm；It is arrived on the outside of outlet box The distance of motor center is A, and A is specially 16.4mm, and there are one relatively suitable ranges in the present embodiment by B/A：0.25~ 0.29 (containing boundary value).

In embodiment one, embodiment two in the utility model, due to eliminating wiring board transition connection, using outlet box Terminal 1-3 and skeleton terminal 2-1 are directly connected to, so B sizes can be relatively reduced compared with the prior art, the overall dimensions A of motor It will reduce, facilitate installation, meet the use demand of client, be used suitable for the product in smaller spatial dimension.

Particular embodiments described above, the technical issues of being solved to the utility model, technical solution and advantageous effect into Go further description, it should be understood that the foregoing is merely specific embodiment of the utility model, and do not have to In limitation the utility model, within the spirit and principle of the utility model, any modification, equivalent substitution and improvements done Deng should be included within the scope of protection of this utility model.

Claims

1. a kind of stepper motor, it is characterised in that：Including outlet box (1) and coil rack (2), the outlet box (1) includes Wire box main body (1-1) and the outlet box terminal (1-3) being fixedly connected on outlet box main body (1-1), the coil rack (2) there is skeleton terminal (2-1)；The outlet box terminal (1-3) includes external connection part (1-3-1) and internal connecting portion Point, the spacing L1 of the external connection part (1-3-1) of outlet box terminal (1-3) is less than or equal to the spacing L2 of skeleton terminal (2-1), The internal coupling part of the outlet box terminal (1-3) is directly welded to connect with skeleton terminal (2-1).

2. stepper motor according to claim 1, it is characterised in that：The external connection portion of the outlet box terminal (1-3) (1-3-1) is divided to be directly connected to internal coupling part (1-3-2), the internal coupling part (1-3-2) is radial, described right The spacing of interior coupling part (1-3-2) is set as：Its with one end that the external connection part (1-3-1) of outlet box terminal is connect to The one end being connect with skeleton terminal (2-1) becomes larger.

3. stepper motor according to claim 2, it is characterised in that：One end of the external connection part (1-3-1) with One end of internal coupling part (1-3-2) connects and has certain angle, and the outlet box terminal (1-3) is on the whole primary folding Kinking structure.

4. stepper motor according to claim 3, it is characterised in that：The skeleton terminal (2-1) includes winding portion (2- 1-1), middle section (2-1-2) and external connection part (2-1-3), one end of the winding portion (2-1-1) are used for coiling, One end of the middle section (2-1-2) connect with the other end of winding portion (2-1-1) and has certain angle, middle section The other end of (2-1-2) connect with one end of external connection part (2-1-3) and has certain angle, the skeleton terminal (2- 1) it is on the whole bending structure twice, whole U-shaped, the internal coupling part (1-3-2) of the outlet box terminal (1-3) and bone The external connection part (2-1-3) of frame end (2-1) is welded to connect, and realization outlet box terminal is electrically connected with skeleton terminal.

5. stepper motor according to claim 1, it is characterised in that：The outlet box terminal further includes and external connection portion Divide (1-3-1) mating part (1-3-3) of connection, the internal coupling part (1-3-2) connects with the mating part (1-3-3) It connects, the mating part (1-3-3) is radial, and the spacing of the mating part (1-3-3) is set as：Itself and outlet box terminal External connection part (1-3-1) connection one end become larger to the one end being connect with the internal coupling part (1-3-2).

6. stepper motor according to claim 5, it is characterised in that：The external connection portion of the outlet box terminal (1-3) The one end of (1-3-1) is divided to be connect with one end of mating part (1-3-3) and there is certain angle, the mating part (1-3-3) The other end connect with one end of the internal coupling part (1-3-2) and there is certain angle, the outlet box terminal (1-3) It is secondary bending structure on the whole.

7. stepper motor according to claim 6, it is characterised in that：The skeleton terminal includes winding portion (2-1-1) With external connection part (2-1-3), one end of the winding portion (2-1-1) for coiling, winding portion (2-1-1) it is another End is connect with external connection part (2-1-3), and skeleton terminal (2-1) is a bending structure on the whole；The outlet box terminal The internal coupling part (1-3-2) of (1-3) and external connection part (2-1-3) being directly welded to connect of skeleton terminal (2-1), it is real Reveal being electrically connected for wire box terminal (1-3) and skeleton terminal (2-1).

8. stepper motor according to claim 2, it is characterised in that：It is set on the surface of the outlet box main body (1-1) It is useful for being pressed into the skewed slot (1-4) of the radial arrangement of internal coupling part (1-3-2), internal coupling part (1-3-2) pressure Enter and be stuck in skewed slot (1-4).

9. stepper motor according to claim 5, it is characterised in that：It is set on the surface of the outlet box main body (1-1) The skewed slot (1-4) of the radial arrangement of press-in cooperation part (1-3-3) is useful for, mating part (1-3-3) is pressed into and is stuck in In skewed slot (1-4).

10. the stepper motor according to claim 4 or 7, it is characterised in that：The winding portion (2-1-1) is for coiling One end relative to winding portion (2-1-1) the other end have one push sharp angle α.

11. stepper motor according to claim 1, it is characterised in that：The outside of the outlet box is between motor outer diameter Distance for B, to the distance of motor center be A, B on the outside of outlet box：Ranging from the 0.25~0.29 of A.

12. stepper motor according to claim 1, it is characterised in that：The outside of the outlet box is between motor outer diameter Distance B for 4.4mm, to the distance A of motor center be 16.4mm on the outside of the outlet box.

13. stepper motor according to claim 1, it is characterised in that：The skeleton terminal (2-1) is provided with 5, described 5 skeleton terminal (2-1) word orders are in the support member of coil rack (2).