Anti-loosening wire protection box structure of stepping motor

Abstract

The utility model discloses an anti-loosing wire protection box structure of a stepping motor, which comprises a motor body, a wire protection box and a connecting piece, the wire protection box is fixed on the motor body, the wire protection box comprises a butt joint part and an abutting part, a plurality of terminals are led out of the motor body and penetrate into the butt joint part, and the abutting part is fixed on the motor body. A first positioning assembly is arranged on the outer wall of the butt joint part, a second positioning assembly is correspondingly arranged on the outer wall of the connecting piece, the abutting part is provided with a blocking assembly, in the working state, the connecting piece is inserted into the butt joint part to be connected with the terminal, and the second positioning assembly is embedded into the first positioning assembly for matched positioning. The blocking assembly abuts against the bottom of the connecting piece to limit vertical displacement of the connecting piece. The anti-loosening wire protection box structure of the stepping motor is simple in overall structure and good in anti-loosening performance, the connecting piece is prevented from loosening or falling off by arranging a simple blocking assembly structure at the bottom of the wire protection box, and meanwhile, the first positioning assembly and the second positioning assembly are correspondingly arranged, so that the anti-loosening wire protection box structure of the stepping motor is fast in positioning and good in anti-loosening performance. And loosening of the connecting piece is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of stepping motors, in particular to an anti-loosening wire protection box structure of a stepping motor. Background Art

[0002] A stepper motor is an electric motor that converts an electrical pulse signal into a corresponding angular displacement or linear displacement. When in use, for convenience, the motor and the lead wire are often made into a plug-in type, but in actual application, the plug wire connection may be loose, loose, or have poor contact, resulting in product failure.

[0003] For example, the Chinese utility model patent (CN204707021U) discloses a circuit board-free leadless stepper motor, including a frame, a terminal and a wire protection box. A terminal mounting part is arranged on the side of the frame, and the terminal mounting part includes a plurality of grooves and through holes. The groove is located on one end face of the frame, and the through hole connects the groove with the side of the terminal mounting part. The terminal is a three-fold structure, including a straight line part in the middle and a winding part and a protruding part located at both ends of the straight line part. The straight line part is inserted in the through hole, and the protruding part extends out of the through hole and bends toward the wire protection box. The winding part cooperates with the groove, and the protruding part extends into the wire protection box and extends out from the wire protection box. The wire protection box is fixedly connected to the frame. When implementing the patent, the present applicant found that after the plug connector is easily connected to the terminal, it is easy to become loose after long-term operation, resulting in poor contact.

[0004] The Chinese utility model patent (CN208315907 U) discloses a motor anti-slip mechanism and a motor, wherein the motor anti-slip mechanism includes: a wire protection box, a plug connector and a locking assembly; the motor body is fixedly connected to the wire protection box; the wire protection box is provided with a groove suitable for plugging the plug connector; the locking assembly is suitable for locking the plug connector and the wire protection box. The wire protection box and the plug connector are locked by the locking assembly, but the locking structure is too complicated, the locking operation is laborious, and the locking structure is easy to fail during the plugging and unplugging process.

[0005] Therefore, there is an urgent need to propose a wire protection box structure for preventing a stepping motor from loosening that is simple in structure and easy to operate. Utility Model Content

[0006] Based on this, it is necessary to provide a wire protection box structure for preventing a stepper motor from loosening that is simple in structure and easy to operate in order to solve the above technical problems.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A wire protection box structure for preventing a stepper motor from loosening comprises a motor body, a wire protection box and a connector, wherein the wire protection box is fixed on the motor body, the wire protection box comprises a docking portion and an abutting portion, a plurality of terminals are led out of the motor body and penetrate into the docking portion, a first positioning component is provided on the outer wall of the docking portion, a second positioning component is correspondingly provided on the outer wall of the connector, and a blocking component is provided on the abutting portion. In a working state, the connector is inserted into the docking portion and connected with the terminal, the second positioning component is inserted into the first positioning component for cooperative positioning, and the blocking component abuts against the bottom of the connector to limit the up and down displacement of the connector.

[0009] Furthermore, the blocking component is a first blocking protrusion and a second blocking protrusion, and the first blocking protrusion and the second blocking protrusion are symmetrically arranged in a horizontal direction at the bottom of the abutting portion.

[0010] Furthermore, the first blocking protrusion and the second blocking protrusion are undercut protrusions extending outwardly along the bottom of the abutting portion.

[0011] Furthermore, the undercut protrusion includes a horizontal top surface and an inclined surface connecting the horizontal top surface with the bottom edge of the abutment portion, and the horizontal top surface abuts against the bottom of the connecting member.

[0012] Furthermore, a recessed portion is provided on the left and right sides of the wire protection box, and the recessed portion includes a vertical wall and an inclined wall.

[0013] Furthermore, the inner sides of the vertical walls on the left and right sides are respectively in contact with the left and right sides of the connecting portion.

[0014] Furthermore, a notch is provided on the outer wall of the docking portion, and a U-shaped protrusion is correspondingly provided on the outer wall of the connecting piece, and the left and right sides of the U-shaped protrusion abut against the left and right inner sides of the notch.

[0015] Furthermore, the first positioning component is a first positioning hole and a second positioning hole arranged on the left and right sides of the notch; the second positioning component is a first positioning protrusion and a second positioning protrusion arranged on the left and right sides of the U-shaped protrusion.

[0016] Furthermore, the first positioning protrusion and the second positioning protrusion are in the shape of a trapezoidal platform with a thicker bottom and a thinner top.

[0017] Furthermore, a plurality of through holes are provided in the docking portion, the number of the through holes being adapted to the number of the terminals, and the terminals are docked with the connector after passing through the through holes.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model provides a wire protection box structure for preventing a stepper motor from loosening, wherein a docking portion and an abutting portion are arranged on the wire protection box, and a blocking component is arranged on the abutting portion. In a working state, the blocking component abuts against the bottom of the connecting piece to prevent the connecting piece from moving downward, thereby ensuring the firmness of the docking between the connecting piece and the wire protection box. Meanwhile, a first positioning component and a second positioning component are correspondingly arranged on the docking portion of the wire protection box and the connecting piece, which can not only quickly position the connection during installation, but also play a role of auxiliary limiting, thereby further preventing the docking structure from loosening and causing poor contact of the product.

[0020] The left and right sides of the wire protection box are provided with recessed parts, which abut against the left and right sides of the connecting part to jointly ensure the stability of the entire structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of the anti-loosening wire protection box of the stepping motor provided by the utility model;

[0022] Figure 2 A schematic diagram of the structure of the anti-loosening wire protection box of the stepping motor provided by the utility model;

[0023] Figure 3 A schematic diagram of a motor body of the anti-loosening wire protection box structure of the stepping motor provided by the utility model;

[0024] Figure 4 Schematic diagram of the wire protection box of the anti-loosening wire protection box structure of the stepping motor provided by the utility model Figure 1 ;

[0025] Figure 5 Schematic diagram of the wire protection box of the anti-loosening wire protection box structure of the stepping motor provided by the utility model Figure 2 ;

[0026] Figure 6 A schematic diagram of a connecting piece of the anti-loosening wire protection box structure of a stepping motor provided by the utility model.

[0027] The markings in the figure are as follows:

[0028] Motor body 1, housing 11, opening 111, top cover 12, frame assembly 13, terminal 14;

[0029] The wire protection box 2, the docking portion 21, the abutting portion 22, the recessed portion 23, the through hole 211, the notch 212, the first positioning hole 213, the second positioning hole 214, the inner groove 215, the first blocking protrusion 221, the second blocking protrusion 222, the vertical wall 231, and the inclined wall 232;

[0030] Connecting member 3 , first positioning protrusion 31 , second positioning protrusion 32 , U-shaped protrusion 33 , connecting hole 34 . DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] As described in the background art, the existing stepper motor wire protection box structure either cannot ensure the firmness of the connection with the connector, or the structure is too complicated and difficult to operate.

[0035] In order to solve this technical problem, the utility model provides an anti-loosening wire protection box structure of a stepping motor with a simple structure and good anti-loosening performance.

[0036] Specifically, please refer to Figure 1-6A wire protection box structure for preventing a stepper motor from loosening includes a motor body 1, a wire protection box 2 and a connector 3. The wire protection box 2 is fixed on the motor body 1. The wire protection box 2 includes a docking portion 21 and an abutting portion 22. The motor body 1 leads out a plurality of terminals 14 and penetrates into the docking portion 21. The outer wall of the docking portion 21 is provided with a first positioning component, and the outer wall of the connector 3 is correspondingly provided with a second positioning component. The abutting portion 22 is provided with a blocking component. In a working state, the connector 3 is inserted into the docking portion 21 and connected with the terminal 14, and the second positioning component is inserted into the first positioning component for matching positioning. The blocking component abuts against the bottom of the connector 3 to limit the up and down displacement of the connector 3.

[0037] The anti-loosening wire protection box structure of the stepper motor provided by the utility model has a simple overall structure while ensuring good fastening performance. A simple blocking component structure is set at the bottom of the wire protection box 2 to prevent the connector 3 from loosening or falling. At the same time, a first positioning component and a second positioning component are correspondingly set to quickly position and assist in preventing the connector 3 from loosening.

[0038] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] like Figure 1-6 As shown, the utility model provides a wire protection box structure for preventing a stepper motor from loosening, which includes a motor body 1, a wire protection box 2 and a connector 3. The wire protection box 2 is fixed on the motor body 1, and the motor body 1 leads to a plurality of terminals 14, and the terminals 14 penetrate the wire protection box 2 and are connected to the connector 3. The upper end of the connector 3 is connected to the terminal 14, and the lower end leads to a wiring harness (not shown in the figure) connected to the outside. When in use, the connector 3 is inserted into the wire protection box 2 to cooperate with the terminal 14 to achieve electrical connection, which is convenient for use.

[0042] Further, such as Figure 3 As shown, the motor body 1 includes a shell 11 and a top cover 12. A skeleton component 13 is provided inside the cylindrical cavity surrounded by the shell 11 and the top cover 12. The wire protection box 2 is fixed on the shell 11. The terminal 14 is led out from the skeleton component 13 and passes through the wire protection box 2 to connect with the external connector 3.

[0043] Furthermore, the housing 11 of the motor body 1 is provided with an opening 111 downwardly along the top cover 12, and the terminal 14 is led out from the opening 111. The wire protection box 2 is adapted to the shape of the opening 111, and the wire protection box 2 is fixed on the opening 111. The terminal 14 extends out of the wire protection box 2 and is connected to the connector 3.

[0044] Further, such as Figure 4-5 As shown, the wire protection box 2 includes a docking portion 21 and an abutting portion 22, the docking portion 21 is a groove structure, the terminal 14 passes through the motor body 1 into the docking portion 21, the connector 3 is inserted into the docking portion 21 and connected with the terminal 14, the abutting portion 22 abuts against the connector 3 and limits the connector 3 to prevent the connector 3 from falling off.

[0045] Furthermore, the terminal 14 is a bent pin structure, and a plurality of through holes 211 are provided in the docking portion 21 . The number of the through holes 211 matches the number of the terminals 14 . The terminal 14 passes through the through holes 211 and docks with the connector 3 .

[0046] Further, such as Figure 6 As shown, the outer wall of the docking portion 21 is provided with a notch 212 and a first positioning component, and the first positioning component is provided on both sides of the notch 212. Correspondingly, the outer wall of the connector 3 is provided with a U-shaped protrusion 33 and a second positioning component. When the connector 3 is inserted into the wire protection box 2 and connected to the terminal 14, the U-shaped protrusion 33 is embedded in the notch 212, and the left and right sides of the U-shaped protrusion 33 abut against the left and right inner sides of the notch 212, thereby limiting the left and right displacement of the connector 3 to prevent it from loosening. The first positioning component is inserted into the second positioning component, which, on the one hand, prompts that the connection between the connector 3 and the terminal 14 is in place, and on the other hand, helps to limit the relative displacement of the wire protection box 2 and the connector 3.

[0047] Specifically, the first positioning component on the outer wall of the docking portion 21 is a first positioning hole 213 and a second positioning hole 214, which may be a rectangular, square or circular through hole. In this embodiment, a rectangular through hole is selected, and the first positioning hole 213 and the second positioning hole 214 are respectively arranged on the left and right sides of the notch 212; the second positioning component arranged on the outer wall of the connecting member 3 is a first positioning protrusion 31 and a second positioning protrusion 32, and the first positioning protrusion 31 and the second positioning protrusion 32 are respectively arranged on the left and right sides of the U-shaped protrusion 33, and the cross-sectional shapes of the first positioning protrusion 31 and the second positioning protrusion 32 correspond to the first positioning hole 213 and the second positioning hole 214. When in use, the connecting member 3 is inserted into the wire protection box 2, so that the U-shaped protrusion 33 is embedded in the notch 212, the first positioning protrusion 31 is inserted into the first positioning hole 213, and the second positioning hole 214 is inserted into the second positioning hole 214, which indicates that the connecting member 3 has been assembled in place.

[0048] Furthermore, the upper and lower or left and right sides of the first positioning protrusion 31 and the second positioning protrusion 32 are inclined so that the first positioning protrusion 31 and the second positioning protrusion 32 form a trapezoidal shape with a thicker bottom and a thinner top, which facilitates the first positioning protrusion 31 and the second positioning protrusion 32 to be inserted into or removed from the first positioning hole 213 and the second positioning hole 214.

[0049] Furthermore, the abutting portion 22 is also provided with a blocking component, which abuts against the bottom of the connecting member 3 to achieve relative positioning between the connecting member 3 and the wire protection box 2 to prevent the connecting member 3 from falling off during use.

[0050] Specifically, the blocking component is a first blocking protrusion 221 and a second blocking protrusion 222 extending outward from the bottom of the abutting portion 22, and the first blocking protrusion 221 and the second blocking protrusion 222 are symmetrically arranged in the horizontal direction of the bottom of the abutting portion 22. Specifically, the first blocking protrusion 221 and the second blocking protrusion 222 are both undercut protrusions, which include a horizontal top surface and an inclined surface connecting the top surface with the bottom edge of the abutting portion 22. When installed, the horizontal top surface just abuts against the bottom of the connector 3, providing an upward supporting force for the connector 3, ensuring the stability of the plug-in, and preventing the connector 3 from loosening downward, resulting in poor contact with the motor body 1.

[0051] Furthermore, the connector 3 is provided with a plurality of connecting holes 34 extending from top to bottom, and a connector is provided inside the connecting hole 34. The terminal 14 is inserted from the top of the connecting hole 34 and connected to the connector. A wiring harness (not shown in the figure) is led out from the bottom of the connecting hole 34 and connected to the outside for conduction.

[0052] Furthermore, a recessed portion 23 is provided on the left and right sides of the wire protection box 2. The recessed portion 23 is an anisotropic groove structure, which includes a vertical wall 231 and an inclined wall 232. The inclined wall 232 is formed by the side wall of the wire protection box 2 extending inwardly. The vertical wall 231 is adjacent to the inclined wall 232 and extends vertically downward. The inner sides of the vertical walls 231 on the left and right sides are respectively abutted against the left and right sides of the connecting part 3. On the one hand, it helps to limit the left and right displacement of the connecting part 3 and further improve the stability of the structure. On the other hand, it can reduce the risk of poor dimensional quality caused by plastic shrinkage after the wire protection box 2 is molded.

[0053] The utility model discloses a method for using a wire protection box structure for preventing a stepping motor from loosening as follows: insert the connecting piece 3 from the opening of the docking portion 21 of the wire protection box 2 to connect with the terminal 14, and embed the U-shaped protrusion 33 of the connecting piece 3 into the notch 212, and at the same time, the first positioning protrusion 31 is embedded in the first positioning hole 213, and the second positioning protrusion 32 is embedded in the second positioning hole 214. At this time, the first blocking protrusion 221 and the second blocking protrusion 222 are in contact with the bottom of the connecting piece 3, and the left and right vertical walls 231 are in contact with the left and right sides of the connecting piece 3. The entire plug-in structure is stable and can effectively prevent the common problem of the connecting piece 3 loosening. When the connecting piece 3 needs to be pulled out, since the first positioning protrusion 31 and the second positioning protrusion 32 are in the shape of a trapezoidal table with a thick bottom and a thin top, it is only necessary to gently lift the connecting piece 3 upward to separate the bottom of the connecting piece 3 from the blocking component, and then pull out the connecting piece 3.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A wire protection box structure for preventing a stepper motor from loosening, comprising a motor body (1), a wire protection box (2) and a connecting piece (3), wherein the wire protection box (2) is fixed on the motor body (1), and is characterized in that: The wire protection box (2) comprises a docking portion (21) and an abutting portion (22); a plurality of terminals (14) are led out of the motor body (1) and penetrate into the docking portion (21); a first positioning component is provided on the outer wall of the docking portion (21); a second positioning component is correspondingly provided on the outer wall of the connecting member (3); and a blocking component is provided on the abutting portion (22); in a working state, the connecting member (3) is inserted into the docking portion (21) and connected with the terminal (14); the second positioning component is inserted into the first positioning component for matching positioning; the blocking component abuts against the bottom of the connecting member (3) to limit the upward and downward displacement of the connecting member (3).

2. The anti-loosening wire protection box structure of the stepping motor according to claim 1 is characterized in that: The blocking component comprises a first blocking protrusion (221) and a second blocking protrusion (222); the first blocking protrusion (221) and the second blocking protrusion (222) are symmetrically arranged in the horizontal direction of the bottom of the abutting portion (22).

3. The anti-loosening wire protection box structure of the stepping motor according to claim 2, characterized in that: The first blocking protrusion (221) and the second blocking protrusion (222) are undercut protrusions extending outwards along the bottom of the abutment portion (22).

4. The anti-loosening wire protection box structure of the stepping motor according to claim 3, characterized in that: The undercut protrusion comprises a horizontal top surface and an inclined surface connecting the horizontal top surface with the bottom edge of the abutment portion (22), and the horizontal top surface abuts against the bottom of the connecting member (3).

5. The anti-loosening wire protection box structure of the stepping motor according to claim 1, characterized in that: A recessed portion (23) is also provided on the left and right sides of the wire protection box (2), wherein the recessed portion (23) comprises a vertical wall (231) and an inclined wall (232).

6. The anti-loosening wire protection box structure of the stepping motor according to claim 5, characterized in that: The inner sides of the vertical walls (231) on the left and right sides are respectively in contact with the left and right sides of the connecting member (3).

7. The anti-loosening wire protection box structure of the stepping motor according to claim 1, characterized in that: The outer wall of the docking portion (21) is provided with a notch (212), and the outer wall of the connecting piece (3) is correspondingly provided with a U-shaped protrusion (33), and the left and right sides of the U-shaped protrusion (33) abut against the left and right inner sides of the notch (212).

8. The anti-loosening wire protection box structure of the stepping motor according to claim 7, characterized in that: The first positioning component is a first positioning hole (213) and a second positioning hole (214) provided on the left and right sides of the notch (212); the second positioning component is a first positioning protrusion (31) and a second positioning protrusion (32) provided on the left and right sides of the U-shaped protrusion (33).

9. The anti-loosening wire protection box structure of the stepping motor according to claim 8, characterized in that: The first positioning protrusion (31) and the second positioning protrusion (32) are in the shape of a trapezoidal platform with a thicker bottom and a thinner top.

10. The anti-loosening wire protection box structure of the stepping motor according to claim 1, characterized in that: A plurality of through holes (211) are provided in the docking portion (21), the number of the through holes (211) being adapted to the number of the terminals (14), and the terminals (14) are docked with the connector (3) after passing through the through holes (211).

Images