Outlet box suitable for stepping motor and stepping motor using same

Abstract

The utility model relates to the technical field of intelligent equipment, in particular to an outlet box suitable for a stepping motor and the stepping motor using the outlet box, which comprises an outlet box cover used for sealing a wiring opening on a casing of the stepping motor, and a buckle arranged on the outlet box cover and used for being matched and connected with a coil framework of the stepping motor, an outer wrapping edge wall used for being attached to the outer side wall of the opening edge of the wiring opening is formed on the wire outlet box cover. And the buckle comprises a pair of convex fixed clamping claws which are formed on the side end face, facing the coil framework, of the outlet box cover. According to the utility model, the overall use performance of the matching structure formed by the casing of the stepping motor and the outlet box can be optimized.

Description

Technical Field

[0001] The utility model relates to the field of intelligent equipment, in particular to an outlet box suitable for a stepper motor and a stepper motor using the outlet box. Background Art

[0002] Micro stepper motors are widely used control motors, mainly used in various household electrical appliances. In order to facilitate the wiring of stepper motors, leadless stepper motors have gradually been introduced on the market. This type of motor is equipped with an outlet box. Simply plug the connector into the outlet box to achieve electrical connection, which is very convenient to use.

[0003] Prior art, for example but not limited to, announcement number CN21897836U discloses a terminal box for a stepper motor and a stepper motor. The stepper motor under this structure can be suitable for most working environments. However, for some working environments with a lot of dust or tiny insects, actual use research has found that for a stepper motor with the above structure, due to a small gap between the terminal box and the motor casing, some tiny foreign objects such as dust or insects may enter the inside of the motor, resulting in a series of impacts such as bad noise and severe wear of parts during the later operation of the motor.

[0004] In addition, the stepper motor disclosed in the above technology has been found to have the following problems:

[0005] First, the outer edge of the side of the terminal box is discontinuous, which makes it easy to get stuck during installation with the motor, making it difficult to install; second, the force-bearing area of ​​the lower part of the motor is small, and it is not easy to operate during manual installation and disassembly; third, due to the interference fit when the cover plate is riveted, stress is generated inside the terminal box after riveting, causing damage to the terminal box; fourth, in the process of manufacturing the stator assembly, the chamfer is not set at the matching position between the coil assembly and the terminal box, making it difficult for the coil assembly to slide into the fixing claw groove of the terminal box, which may cause the fixing claw of the terminal box to break.

[0006] In view of the various problems existing in the matching structure between the terminal box and the housing of the above-mentioned stepper motor, it is necessary to further optimize and improve the structure of the terminal box. Utility Model Content

[0007] The first purpose of the utility model is to provide an outlet box suitable for a stepping motor, so as to solve the technical problem of optimizing its overall structure to improve the overall performance of the matching structure formed by the outlet box and the motor housing.

[0008] The second object of the utility model is to provide a stepping motor to solve the technical problem of optimizing the overall performance of the matching structure formed by the casing and the outlet box of the stepping motor.

[0009] The outlet box suitable for the stepping motor of the utility model is realized as follows:

[0010] An outlet box suitable for a stepper motor comprises: an outlet box cover for covering a wiring opening on a housing of the stepper motor, and a buckle arranged on the outlet box cover for matching with a coil frame of the stepper motor; wherein

[0011] The outlet box cover is formed with an outer side wall for fitting on the outer side wall of the opening edge of the wiring opening; and

[0012] The buckle comprises a pair of protruding fixing claws formed on the side end surface of the outlet box cover facing the coil frame.

[0013] In an optional embodiment of the present invention, the wiring opening is U-shaped; and

[0014] The wiring opening has a pair of longitudinal side edges that are arranged opposite to each other and a transverse bottom edge that is used to connect the pair of longitudinal side edges.

[0015] The outer edging wall comprises a pair of longitudinal outer edgings which are used to fit one-to-one on the outer side walls of a pair of oppositely distributed longitudinal side edges of the wiring opening.

[0016] In an optional embodiment of the present invention, the side end surface of the outlet box cover facing the coil skeleton is further provided with a raised transverse inner edging wall suitable for extending into the wiring opening.

[0017] In an optional embodiment of the utility model, the outer edging wall further comprises a transverse outer edging for being attached to the outer side wall of the transverse bottom edge;

[0018] The pair of longitudinal outer edges and the transverse outer edges are integrally formed; and

[0019] A recessed groove suitable for the transverse bottom edge of the wiring opening to be embedded therein is formed between the transverse inner edging wall and the transverse outer edging.

[0020] In an optional embodiment of the present invention, a pair of the longitudinal outer edges and the transverse outer edges are arc-shaped structures that conform to the outer side wall of the casing of the stepper motor.

[0021] In an optional embodiment of the present invention, outer edges of a pair of the longitudinal outer edges are formed with chamfered corners or rounded corners.

[0022] In an optional embodiment of the utility model, a pair of the fixing claws each comprises a connector connected to the end surface of the outlet box cover facing the coil skeleton and a claw head provided on the connector; wherein

[0023] The connecting piece is a solid plate structure.

[0024] In an optional embodiment of the present invention, a pair of claws have ends facing the lateral bottom edge formed with a rounded transition structure.

[0025] In an optional embodiment of the utility model, the end surface of the outlet box cover facing the coil skeleton is provided with supporting ribs; and

[0026] The coil frame is provided with a support block suitable for abutting and cooperating with the support rib.

[0027] The stepping motor of the utility model is realized as follows:

[0028] A stepper motor comprises: the outlet box suitable for the stepper motor, and a motor assembly matched with the outlet box;

[0029] The motor assembly comprises a casing formed with the wiring opening and a coil frame arranged in the casing.

[0030] By adopting the above technical scheme, the utility model has the following beneficial effects: the outlet box suitable for the stepper motor and the stepper motor using the same of the utility model can improve the sealing effect of the outlet box cover and the casing of the stepper motor in the matching state through the outer side wall formed on the outlet box cover for fitting on the outer side wall of the opening edge of the wiring opening, and prevent tiny debris such as dust or small flying insects from entering the interior of the casing through the matching gap formed between the outlet box cover and the wiring opening of the casing. The outlet box suitable for the stepper motor and the stepper motor using the same of the utility model can be applied to the field of servo motor drive and control integrated system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the exploded structure of the outlet box of the utility model applicable to the stepping motor and the housing and coil frame of the corresponding stepping motor;

[0032] Figure 2 This is a first-view structural diagram of an outlet box for a stepping motor according to the utility model;

[0033] Figure 3 This is a second perspective structural diagram of the outlet box of the utility model suitable for a stepping motor;

[0034] Figure 4 It is a third perspective structural schematic diagram of the outlet box of the utility model applicable to the stepping motor;

[0035] Figure 5 This is a schematic structural diagram of the outlet box of the utility model suitable for a stepping motor from a fourth viewing angle;

[0036] Figure 6 It is a fifth perspective structural diagram of the outlet box of the utility model applicable to the stepping motor;

[0037] Figure 7 It is a sixth perspective structural schematic diagram of the outlet box of the utility model applicable to the stepping motor;

[0038] Figure 8 The utility model is a schematic diagram of the exploded structure of an outlet box and a coil frame suitable for a stepping motor.

[0039] In the figure: outlet box cover 1, longitudinal outer edging 11, transverse inner edging wall 12, transverse outer edging 13, recessed groove 15, supporting rib 16, connector 17, claw head 18, card slot 181, housing 2, wiring opening 21, longitudinal side edge 211, transverse bottom edge 212, coil skeleton 3, supporting block 31, card block 32, cover plate 4. DETAILED DESCRIPTION

[0040] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0041] Embodiment 1:

[0042] See also Figures 1 to 8 As shown, this embodiment provides an outlet box suitable for a stepper motor, comprising: an outlet box cover 1 for covering a wiring opening 21 on a housing 2 of the stepper motor, and a buckle provided on the outlet box cover 1 for matching with a coil frame 3 of the stepper motor. That is to say, for the overall outlet box, the outlet box is fixed relative to the motor assembly of the stepper motor by the buckle and the coil frame 3, and the outlet box cover 1 matches with the wiring opening 21 to cover the wiring opening 21.

[0043] Furthermore, in order to prevent dust or small flying insects and other tiny debris from entering the interior of the housing 2 through the matching gap formed by the outlet box cover 1 and the wiring opening 21 of the housing 2, the outlet box of this embodiment is designed as follows:

[0044] Generally speaking, an outer side wall is formed on the outlet box cover 1 for fitting on the outer side wall of the opening edge of the wiring opening 21; under this structure, after the buckle of the outlet box and the coil frame 3 are snapped into place, the outer side wall fits on the outer side wall of the casing 2 and just covers the wiring opening 21.

[0045] Next, an optional implementation is given in detail with reference to the accompanying drawings. The wiring opening 21 can be any mature means in the prior art, and this embodiment does not make an absolute limitation on this. Here, a conventional implementation technical solution is given as an example. The wiring opening 21 is U-shaped, that is, the wiring opening 21 includes a pair of longitudinal side edges 211 distributed in pairs and a transverse bottom edge 212 connected to the pair of longitudinal side edges 211 at the same time; and the side edge opposite to the transverse bottom edge 212 is an open opening.

[0046] Based on the structure of the wiring opening 21 , firstly, the outer edging wall used in this embodiment includes at least a pair of longitudinal outer edgings 11 for one-to-one fitting on the outer side walls of a pair of longitudinal side edges 211 .

[0047] Furthermore, the side end surface of the outlet box cover 1 facing the coil frame 3 is also provided with a convex transverse inner edging wall 12 suitable for extending into the wiring opening 21. Based on this structure, when the buckle of the outlet box and the coil frame 3 are assembled in place, the connecting wall formed between the transverse inner edging wall 12 and the outlet box cover 1 can be pressed against the transverse bottom edge 212 of the wiring opening 21. Here, the length of the connecting wall is preferably equal to the length of the transverse bottom edge 212 of the wiring opening 21, so that when the outlet box cover 1 and the wiring opening 21 are in a matched state, the connecting wall can achieve sealing of the transverse bottom edge 212.

[0048] Based on the above situation, it is necessary to explain that the length of the transverse inner edging wall 12 can be equal to the length of the transverse bottom edge 212 or greater than the length of the transverse bottom edge 212, and this embodiment does not make an absolute limitation on this. From the perspective of facilitating demoulding of the outlet box during the production process, the length of the transverse inner edging wall 12 can be equal to the length of the transverse bottom edge 212.

[0049] On the basis of the above structure, in an optional implementation, in order to further strengthen the sealing of the matching structure formed by the outer edging wall and the housing 2 of the stepper motor, the outer edging wall used in this embodiment also includes a transverse outer edging 13 for fitting on the outer side wall of the transverse bottom edge 212 of the wiring opening 21. Based on this structure, that is to say, for a pair of longitudinal side edges 211 and a transverse bottom edge 212 of the wiring opening 21, a sealing fit with the outer side wall of the housing 2 is achieved by a pair of matching longitudinal outer edging 11 and transverse outer edging 13, respectively. It is necessary to explain here that when the transverse outer edging 13 is designed, the length of the transverse inner edging wall 12 can be less than the length of the transverse bottom edge 212 of the wiring opening 21. Under this design, it is convenient to demold the outlet box during the production process.

[0050] In the preferred case here, a pair of longitudinal outer edges 11 and transverse outer edges 13 are integrally formed, so that the outer edge walls form a slide rail structure relative to the outer side walls of the casing 2. In the process of assembling the outlet box of this embodiment with the casing 2 of the stepper motor, the outlet box is plugged into the wiring opening 21 as a whole from the opening where the casing 2 and the cover plate 4 are riveted together along the longitudinal height direction of the casing 2. Therefore, designing the outer edge walls here to form a slide rail structure relative to the outer side walls of the casing 2 can improve the positioning accuracy of the outlet box when plugging into the wiring opening 21 of the casing 2, thereby improving the assembly efficiency.

[0051] Based on the above situation, it is necessary to explain that a recessed groove 15 suitable for the transverse bottom edge 212 of the wiring opening 21 to be engaged therein is formed between the transverse inner edging wall 12 and the transverse outer edging 13. Under this structure, the engagement between the recessed groove 15 and the transverse bottom edge 212 of the wiring opening 21 can improve the stability of the outlet box cover 1 and the housing 2 in the assembled state.

[0052] It should be noted that in order to improve the sealing effect when the outer edge wall and the outer wall of the casing 2 of the stepper motor are in contact, the pair of longitudinal outer edges 11 and transverse outer edges 13 used in this embodiment are both arc-shaped structures that conform to the outer wall of the casing 2 of the stepper motor.

[0053] In addition, in an optional implementation, the outer edges of a pair of longitudinal outer edges 11 are formed with chamfers K1 or rounded corners. This structure can prevent the motor assembly casing 2 from damaging the outlet box cover 1 when the casing 2 is deformed and expanded outward when riveted to the cover plate 4.

[0054] On the basis of the above structure, in order to improve the firmness and stability of the outlet box assembled with the motor assembly during use, the outlet box cover 1 in this embodiment is provided with a support rib 16 on the end surface facing the coil frame 3; and the coil frame 3 is provided with a support block 31 suitable for abutting and cooperating with the support rib 16. Under this structure, when the outlet box is under pressure, it is more firm to prevent excessive external pressure, and the stress is all concentrated on the outer side wall, which causes the outer side wall to be damaged or even broken.

[0055] Next, the connection between the outlet box cover 1 and the coil frame 3 is described:

[0056] For example, in an optional case, the buckle includes a pair of protruding fixing claws formed on the side end surface of the outlet box cover 1 facing the coil frame 3. Correspondingly, a pair of clamping blocks 32 for one-to-one clamping cooperation with the pair of fixing claws are provided on the coil frame 3.

[0057] More specifically, the pair of fixing claws here include a connector 17 connected to the end face of the outlet box cover 1 facing the coil frame 3 and a claw head 18 arranged on the connector 17; wherein the connector 17 is a solid plate structure, which can increase the strength of the fixing claws and make the fixing structure formed by the fixing claws and the coil frame 3 more firm.

[0058] Furthermore, based on the above structure, it is also necessary to explain that a pair of claw heads 18 are formed with chamfered transition structures K2 at the ends facing the lateral bottom edge 212. Since in the process of assembling the outlet box of this embodiment with the casing 2 of the stepper motor, the outlet box is as a whole from the opening where the casing 2 and the cover plate 4 are riveted to the wiring opening 21 along the longitudinal height direction of the casing 2, the design of the chamfered transition structure K2 here facilitates the assembly of the outlet box cover 1 to the wiring opening 21 of the stepper motor, thereby preventing the casing 2 from colliding with the claw heads 18 and causing damage to the claw heads 18 when the outlet box and the casing 2 are installed.

[0059] In addition, in an optional implementation, a pair of claw heads 18 are formed with a slot 181 suitable for inserting the card block 32. In this regard, chamfers are respectively formed on the matching surfaces of the card block 32 and the slot 181, that is, a first installation chamfer K3 is formed on the card block 32, and a second installation chamfer K4 is formed on the slot 181. This design makes it easier for the card block 32 to slide into the slot 181, thereby preventing the claw head 18 from being damaged or even broken due to excessive force.

[0060] In summary, for the outlet box of the present embodiment suitable for the stepper motor, it is not only possible to prevent tiny debris such as dust or small flies from entering the interior of the housing 2 through the matching gap formed by the outlet box cover 1 and the wiring opening 21 of the housing 2, but also to improve the stability of the matching structure formed by the outlet box and the housing 2 during long-term use.

[0061] Embodiment 2:

[0062] See also Figures 1 to 8 As shown, based on the outlet box suitable for the stepper motor in Example 1, the stepper motor provided in this embodiment includes: the outlet box suitable for the stepper motor in Example 1, and a motor assembly matched with the outlet box; the motor assembly includes a housing 2 formed with a wiring opening 21 and a coil frame 3 arranged in the housing 2.

[0063] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0064] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. A terminal box suitable for a stepper motor, characterized in that: include: An outlet box cover for covering a wiring opening on a housing of a stepper motor, and a buckle provided on the outlet box cover for matching with a coil frame of the stepper motor; in The outlet box cover is formed with an outer side wall for fitting on the outer side wall of the opening edge of the wiring opening; and The buckle comprises a pair of protruding fixing claws formed on the side end surface of the outlet box cover facing the coil frame.

2. The terminal box suitable for a stepper motor according to claim 1, characterized in that: The wiring opening is in a U shape; The wiring opening has a pair of longitudinal side edges that are arranged opposite to each other and a transverse bottom edge that is used to connect the pair of longitudinal side edges. The outer edging wall comprises a pair of longitudinal outer edgings which are used to fit one-to-one on the outer side walls of a pair of oppositely distributed longitudinal side edges of the wiring opening.

3. The terminal box suitable for a stepper motor according to claim 2, characterized in that: The side end surface of the outlet box cover facing the coil frame is also provided with a raised transverse inner edge wall suitable for extending into the wiring opening.

4. The terminal box suitable for a stepper motor according to claim 3, characterized in that: The outer edging wall also includes a transverse outer edging for being attached to the outer side wall of the transverse bottom edge; The pair of longitudinal outer edges and the transverse outer edges are integrally formed; and A recessed groove suitable for the transverse bottom edge of the wiring opening to be embedded therein is formed between the transverse inner edging wall and the transverse outer edging.

5. The terminal box suitable for a stepper motor according to claim 4, characterized in that: The pair of longitudinal outer edges and transverse outer edges are both arc-shaped structures that conform to the outer side wall of the casing of the stepping motor.

6. The terminal box suitable for a stepper motor according to any one of claims 2 to 5, characterized in that: The outer edges of a pair of the longitudinal outer edges are formed with chamfered corners or rounded corners.

7. The terminal box suitable for a stepper motor according to any one of claims 2 to 5, characterized in that: A pair of the fixed claws each comprises a connector connected to the end surface of the outlet box cover facing the coil frame and a claw head arranged on the connector; wherein The connecting piece is a solid plate structure.

8. The terminal box suitable for a stepper motor according to claim 7, characterized in that: The end portions of the pair of claws facing the lateral bottom edge are both formed with rounded transition structures.

9. The terminal box suitable for a stepping motor according to any one of claims 1 to 3, characterized in that: The end surface of the outlet box cover facing the coil frame is provided with supporting ribs; and The coil frame is provided with a support block suitable for abutting and cooperating with the support rib.

10. A stepping motor, characterized in that: include: An outlet box suitable for a stepper motor as claimed in any one of claims 1 to 3, and a motor assembly matched with the outlet box; The motor assembly comprises a casing formed with the wiring opening and a coil frame arranged in the casing.

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