Stepping motor with inner buckle structure

Abstract

The utility model relates to the technical field of motors, in particular to a stepping motor with an inner buckle structure. A stepping motor with an inner buckle structure is provided with a motor body, a wire protection box and a plug-in assembly, the plug-in assembly comprises a connecting shell and a connector, one outer side face of the connecting shell protrudes to form a boss, the bottom of the boss is folded inwards to form a clamping hook, a cavity for the connector to stretch into from bottom to top is formed in the connecting shell, the bottom of the cavity is open, and the connector is connected with the motor body. The top face of the cavity extends downwards to form a plurality of limiting pieces, buckles matched with the clamping hooks are arranged on the side face, facing the boss, of the connector, and clamping grooves matched with the limiting pieces are formed in the top face of the connector. According to the utility model, after the clamping hook and the buckle are matched, the connection is tight and firm and is not easy to loosen, the separation of the connecting shell and the connector assembly cannot be caused even if the clamping hook and the buckle are pulled by a relatively large force, the structures of the clamping hook and the buckle are not easy to deform, the overall outer surface is smooth, and the scratching condition is avoided during assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a stepping motor with an inner buckle structure. Background Art

[0002] like Figure 1 As shown, the existing stepper motor connector assembly includes a plastic shell with a pin and a connector. A notch is provided on the outer side of the plastic shell, an outer lock buckle is provided above the notch, and an inwardly arranged hook is provided on the outer side of the connector. When the two are connected, the pin is inserted into the notch of the connector until the hook hooks the outer lock buckle. Since the hook is arranged inwardly, the outer lock buckle and the hook are easily deformed and fall off after repeated use, resulting in invalid connection, thereby affecting the operation of the stepper motor. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a stepping motor with an inner buckle structure.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a stepper motor with an internal snap-fit ​​structure, comprising a motor body, a wire protection box and a connector assembly, the connector assembly comprising a connecting shell and a connector, a boss protruding from an outer side surface of the connecting shell, the bottom of the boss folded inward to form a hook, a cavity for the connector to extend from bottom to top is provided in the connecting shell, the bottom of the cavity is open, and a plurality of limit members are formed on the top surface of the cavity extending downward, a snap fitting with the hook is provided on a side surface of the connector facing the boss, and a slot fitting with the limit member is provided on the top surface of the connector.

[0005] Furthermore, a slot is provided in the middle of the boss, and a row of square pins is provided on one side edge of the top surface of the connection shell away from the slot. The slot is provided for observation when the connection shell is connected to the connector.

[0006] Furthermore, the square pin is in a right-angle bending structure, and the square pin and the connecting shell are integrally formed by injection molding. The square pin and the connecting shell are integrally formed by injection molding to ensure the consistency of the positions of all the square pins and to ensure effective connection with the motor body.

[0007] Furthermore, a row of sockets for inserting the pins is provided on the top surface of the connector, and the slots are in an inverted step structure. The sockets are arranged in an inverted step structure to help the pins to be aligned and inserted into the sockets more easily, and reduce deviation during insertion.

[0008] Furthermore, fasteners are formed on the lower parts of the two end surfaces of the chamber extending downward.

[0009] Furthermore, notches cooperating with the fasteners are provided on both end surfaces of the connector, and the connection firmness between the connector and the connection shell is further ensured by the cooperation between the notches and the fasteners.

[0010] Furthermore, a protrusion is provided on one side of the connector, the protrusion and the top surface of the connector are in arc transition, a groove is provided in the middle of the protrusion, a buckle is provided on the groove, and the thickness of the buckle is less than or equal to the thickness of the protrusion. When the buckle is arranged in the groove and cooperates with the hook, the connection will not be loose due to lateral force.

[0011] Furthermore, outer flanges are provided at the bottom of both end surfaces of the connector, which can protect the plug-in assembly.

[0012] Furthermore, the motor body comprises a housing, a cover plate and an output shaft, and the cover plate has an extension portion corresponding to the wire outlet portion of the motor body. The extension portion is provided to protect the wire outlet portion.

[0013] Furthermore, the wire protection box has an overlapped portion matched with the extension portion, and a notch matched with the boss is provided on the outer surface of the wire protection box. Such an arrangement can well ensure the connection between the junction box and the cover plate, the housing and the connector assembly.

[0014] The beneficial effects of the utility model are as follows: a boss is arranged on the outer side surface of the connecting shell, the bottom surface of the boss is folded inward to form a hook, and a buckle that matches the hook is arranged on the side of the connector facing the boss, so that after the hook and the buckle are matched, the connection is tight and firm, and it is not easy to loosen, even if a large force is used to pull, the connection shell and the connector will not be separated, and the structure of the hook and the buckle is not easy to deform, the overall outer surface is flat, and scratches are avoided during assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0016] Figure 1 It is a structural schematic diagram of a connector assembly in the prior art.

[0017] Figure 2 It is a structural schematic diagram of the utility model.

[0018] Figure 3 It is an assembly drawing of the utility model.

[0019] Figure 4 yes Figure 2 sectional view of .

[0020] Figure 5 It is a bottom view of the connector assembly in the utility model.

[0021] Figure 6 It is a structural schematic diagram of a connecting shell in the utility model.

[0022] Figure 7It is a schematic diagram of the connector structure in the utility model.

[0023] Figure 8 It is a structural schematic diagram of the junction box in the utility model.

[0024] Fig. 9 It is a schematic diagram of the structure of an external connector with wires.

[0025] In the figure: 100. Motor body, 101. Shell, 102. Cover, 103. Output shaft, 1. Wire protection box, 11. Overlapping part, 12. Notch, 2. Connecting shell, 20. Chamber, 21. Boss, 22. Hook, 23. Limiter, 24. Slot, 25. Square, 26. Fastener, 3. Connector, 31. Buckle, 32. Slot, 33. Socket, 34. Notch, 35. Bump, 36. Groove, 37. Outer flange. DETAILED DESCRIPTION

[0026] The present invention is now further described in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0027] like Figure 2 to Figure 5 As shown, a stepper motor with an internal buckle structure has a motor body 100, a wire protection box 1 and a plug-in assembly, the plug-in assembly includes a connecting shell 2 and a connector 3, a boss 21 is formed on an outer surface of the connecting shell 2, the bottom of the boss 21 is folded inward to form a hook 22, a chamber 20 is provided in the connecting shell 2 for the connector 3 to extend from bottom to top, the bottom of the chamber 20 is open, and the top surface of the chamber 20 extends downward to form four limit members 23 (the structure of the limit members 23 matches the structure of the slot 32 on the connector 3, no specific limitation is made, as long as the plug-in structure is realized), a buckle 31 matching the hook 22 is provided on one side of the connector 3 facing the boss 21, and a slot 32 matching the limit member 23 is provided on the top surface of the connector 3. Among them, the motor body 100 includes a housing 101, a cover plate 102 and an output shaft 103, and the cover plate 102 has an extension portion 1021 corresponding to the outlet portion of the motor body 100. The hook 22 can be configured as a hook with a track, or a hook without a track. The so-called track can be considered as a slide groove.

[0028] like Figure 6As shown, a slot 24 is provided in the middle of the boss 21 on the connecting shell 2, and a row of flat pins 25 are provided on the edge of one side of the top surface of the connecting shell 2 away from the slot 24. The slot 24 is provided for observation when the connecting shell 2 is connected to the connector 3. The flat pins 25 are bent at a right angle, and the flat pins 25 are integrally injection molded with the connecting shell 2. The flat pins 25 are integrally injection molded with the connecting shell 2 to ensure the consistency of the positions of all the flat pins 25 and to ensure effective connection with the motor body 100. The lower part of the two end surfaces of the inner chamber 20 of the connecting shell 2 extends downward to form fasteners 26 (the fasteners 26 and the slots 34 are not specifically limited, as long as the plug-in structure is realized).

[0029] like Figure 7 As shown, the top surface of the connector 3 is provided with a row of sockets 33 for the insertion of the flat pins 25, and the sockets 33 are in an inverted step structure. The sockets 33 are set in an inverted step structure to help the flat pins 25 to align and insert into the sockets 33 more easily, thereby reducing the deviation during insertion. The two end surfaces of the connector 3 are provided with notches 34 that match the fasteners 26. The matching of the notches 34 and the fasteners 26 further ensures the connection firmness between the connector 3 and the connection shell 2. A convex block 35 is provided on one side surface of the connector 3, and the convex block 35 transitions with the arc of the top surface of the connector 3. A groove 36 is provided in the middle of the convex block 35, and a buckle 31 is provided on the groove 36. The thickness of the buckle 31 is less than or equal to the thickness of the convex block 35. The buckle 31 is set in the groove 36, and after matching with the hook 22, the connection will not be loose due to lateral force. The bottom of the two end surfaces of the connector 3 is provided with an outer flange 37, and the outer flange 37 can protect the entire docking assembly.

[0030] like Figure 8 As shown, the wire protection box 1 has a lap portion 11 that matches the extension portion, a notch 12 that matches the boss 21 is provided on the outer surface of the wire protection box 1, and a clamping portion connected to the housing 101 is also provided, which can well ensure the connection between the wire protection box 1 and the cover plate 102, the housing 101 and the connector assembly. Several reinforcing ribs can be added to the outer wall of the wire protection box 1 to improve its strength.

[0031] In addition, one end of the connector 3 is connected to the connection shell 2, and the other end thereof can be directly plugged into the circuit board, or a connector with a wire can be used to connect to the circuit board, such as Fig. 9 As shown, the connector with wires can also be connected to other parts that need to be connected, which is not limited here.

[0032] The above-mentioned implementation mode is only for illustrating the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A stepper motor with an inner snap-fit ​​structure, comprising a motor body (100), a wire protection box (1) and a connector assembly, characterized in that: The connector assembly comprises a connection shell (2) and a connector (3); a boss (21) is protruded from an outer surface of the connection shell (2); the bottom of the boss (21) is folded inward to form a hook (22); a chamber (20) is provided in the connection shell (2) for the connector (3) to extend from bottom to top; the bottom of the chamber (20) is open; a plurality of stoppers (23) are formed on the top surface of the chamber (20) extending downward; a buckle (31) matching with the hook (22) is provided on a side surface of the connector (3) facing the boss (21); and a slot (32) matching with the stopper (23) is provided on the top surface of the connector (3).

2. The stepper motor with an inner buckle structure according to claim 1, characterized in that: A slot hole (24) is provided in the middle of the boss (21), and a row of square pins (25) is provided on an edge of a side of the top surface of the connection shell (2) away from the slot hole (24).

3. The stepper motor with an inner buckle structure according to claim 2, characterized in that: The square pin (25) is in a right-angle bent structure, and the square pin (25) and the connecting shell (2) are integrally injection-molded.

4. The stepper motor with an inner buckle structure according to claim 2, characterized in that: The top surface of the connector (3) is provided with a row of sockets (33) for inserting the square pins (25), and the sockets (33) are in an inverted step structure.

5. The stepper motor with an inner buckle structure according to claim 1, characterized in that: Fasteners (26) are formed at the lower parts of the two end surfaces of the chamber (20) extending downward.

6. The stepper motor with an inner buckle structure according to claim 5, characterized in that: The lower parts of both end surfaces of the connector (3) are provided with notches (34) that match the fasteners (26).

7. The stepper motor with an inner buckle structure according to claim 1, characterized in that: A protrusion (35) is provided on one side surface of the connector (3), the protrusion (35) and the top surface of the connector (3) are in arc transition, a groove (36) is provided in the middle of the protrusion (35), a buckle (31) is provided on the groove (36), and the thickness of the buckle (31) is less than or equal to the thickness of the protrusion (35).

8. The stepper motor with an inner buckle structure according to claim 1, characterized in that: External flanges (37) are provided at the bottom of both end surfaces of the connector (3).

9. The stepper motor with an inner buckle structure according to claim 1, characterized in that: The motor body (100) comprises a housing (101), a cover plate (102) and an output shaft (103); the cover plate (102) has an extension portion corresponding to a wire outlet portion of the motor body (100).

10. The stepper motor with an inner buckle structure according to claim 9, characterized in that: The wire protection box (1) has an overlapping portion (11) that matches the extension portion, and a notch (12) that matches the boss (21) is provided on the outer surface of the wire protection box (1).

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