CN211018499U - High-reliability outgoing line stepping motor - Google Patents

Abstract

The utility model provides a high-reliability wire-outgoing stepping motor, which comprises a motor body, a front end cover arranged at the front end part of the motor body, a motor rotating shaft extending from the motor body to the front end cover and a rear end cover fixed at the rear end part of the motor body; a first wire outlet hole is formed in one side face of the rear end cover, the motor body comprises a first outer side face parallel to the axis of the motor rotating shaft, and the first wire outlet hole is coplanar with the first outer side face; a line pressing block is arranged right above the first line outlet hole and fixedly connected with the rear end cover; the wire pressing block is provided with a second wire outlet hole or a wire outlet groove, and a cable in the open-loop stepper motor penetrates out of the second wire outlet hole or the wire outlet groove through the first wire outlet hole; thereby through setting up on motor housing, the protection to the cable is realized to the line ball piece in the first outlet outside, has prolonged the life of cable.

Description

High-reliability outgoing line stepping motor

Technical Field

The utility model relates to a but not limited to the electrical equipment field particularly, relates to but not limited to a step motor that high reliability is qualified for next round of competitions.

Background

The open-loop stepping motors on the market are basically directly outgoing, a large gap is formed at the outgoing line hole, the protection level of the open-loop stepping motors is extremely poor, and dust, sundries, water vapor and the like easily enter the motors through the outgoing line hole, so that the open-loop stepping motors are one of the reasons for high failure rate. In addition, at least a plurality of wires are led out from the open-loop stepping motor, but the tensile strength of the open-loop stepping motor is weak, and when a user carries the wires to move the motor or the motor is assembled on equipment to operate, and the wires swing to a certain extent, the possibility of wire breakage is caused.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a step motor that high reliability was qualified for the next round of competitions, the main technical problem who solves is: in the related art, a bare wire outlet on a motor causes the problem that an electric wire is easy to damage.

In order to solve the above technical problem, an embodiment of the present invention provides an open-loop stepping motor, including a motor body, a front end cover disposed at a front end portion of the motor body, a motor shaft extending from the motor body to the front end cover, and a rear end cover fixed at a rear end portion of the motor body; a first wire outlet hole is formed in one side face of the rear end cover, the motor body comprises a first outer side face parallel to the axis of the motor rotating shaft, and the first wire outlet hole is coplanar with the first outer side face; a line pressing block is arranged right above the first line outlet hole and fixedly connected with the rear end cover; and the cable in the open-loop stepper motor penetrates out of the second wire outlet hole or the wire outlet groove through the first wire outlet hole.

The embodiment of the utility model provides a beneficial effect is:

increased the line ball piece, can prevent inside entering motor body such as dust, debris, the line ball piece has also promoted the intensity of cable, avoids damaging because of reasons such as buckling, has improved open-loop step motor's use reliability, and the life of extension motor has still promoted the pleasing to the eye degree of motor.

In addition, in the embodiment of the utility model provides an in, still change every strand of loose line of strand copper wire into the cable of the at least 30 strand copper wires of every line, tensile bending resistance ability is stronger, avoids the broken string, has further improved open-loop step motor's use reliability, extension motor's life.

Other features and corresponding advantages of the invention are set forth in the following part of the specification, and it is to be understood that at least some of the advantages become apparent from the description of the invention.

Drawings

Fig. 1 is a perspective view of a stepping motor according to a first embodiment of the present invention;

fig. 2 is a front view of a stepping motor according to a first embodiment of the present invention;

fig. 3 is a top view of a stepping motor according to a first embodiment of the present invention;

fig. 4 is an exploded view of a stepping motor according to a first embodiment of the present invention;

fig. 5 is a schematic view of a second wire hole on a wire pressing block according to an embodiment of the present invention;

fig. 6 is a schematic view illustrating a tight connection between a wire pressing block and a dust-proof pad in a first embodiment of the present invention;

fig. 7 is a schematic top view of a connection portion between a wire pressing block and a dust-proof pad in a stepping motor according to a first embodiment of the present invention;

fig. 8 is a perspective view of another stepping motor according to the second embodiment of the present invention;

fig. 9 is a perspective view of another stepping motor according to a third embodiment of the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Example one

Referring to fig. 1-4, the stepping motor 1 includes a motor body 12, a front end cover 11 disposed at a front end portion of the motor body 12, a motor shaft 15 extending from the motor body 12 to the front end cover 11, and a rear end cover 13 fixed at a rear end portion of the motor body 12; a first wire outlet hole 14 is formed in one side face of the rear end cover 13, the motor body 12 comprises a first outer side face 121 parallel to the axis of the motor rotating shaft 15, and the first wire outlet hole 14 is coplanar with the first outer side face 121; a wire pressing block 2 is arranged right above the first wire outlet hole 14 and is fixedly connected with the rear end cover 13; the wire pressing block 2 is provided with a second wire outlet hole 21 or a wire outlet groove 21, and the cable in the stepper motor passes through the second wire outlet hole 21 or the wire outlet groove 21 through the first wire outlet hole 14.

The motor is an electrical device which converts an electrical signal into mechanical angular displacement; the motors are classified into direct current motors and alternating current motors according to the working power supply; the motor is classified according to the structure and the working principle and can be divided into a direct current motor, an asynchronous motor and a synchronous motor; the control motors can be divided into stepping motors and servo motors. Due to the electrical characteristics of the motor, at least electric energy can be input in the working state, and the electric energy can be input through a cable which is arranged in the motor and is led out through the first wire outlet hole 14 on the motor body 12.

In this embodiment, the first wire outlet 14 of the motor is provided with a wire pressing block 2 at the outer side thereof. Wire from the wire hole is qualified for the next round of competitions can be lived in the coating of line ball 2, the direction of being qualified for the next round of competitions can be adjusted according to line ball 2's structure, and line ball 2 itself then realizes the location of electric wire fixedly through pressing to electric wire motor body 12, one of them can be through line ball 2 itself, for the electric wire provides the protection, it is secondly can be through second wire hole 21 or wire groove 21 on line ball 2, carry on spacingly to the cable, realize the relatively fixed of the position of cable, prevent that it from taking place too big deformation and becoming fragile. The second wire hole 21 and the wire groove 21 in this embodiment refer to the same component, and referring to fig. 5, fig. 5 shows a schematic structure of a wire pressing block 2 with the second wire hole 21. In some embodiments, the axis of the second wire outlet hole 21 is parallel to the outer surface of the motor body 12 where the wire pressing block 2 is located, and an included angle between a reference orthographic projection of the axis of the rotating shaft 15 on the first outer side surface 121 and a first orthographic projection of the axis of the second wire outlet hole 21 or the axis of the wire outlet groove 21 on the first outer side surface 121 is 0 ° to 90 °. When the wire pressing block 2 is provided with the wire outlet groove 21, the wire outlet groove 21 can be a U-shaped groove.

In some embodiments, a dustproof pad 3 is arranged between the stepping motor and the line pressing block 2, and the dustproof pad 3 comprises an outgoing line dustproof part 31 and a fixed dustproof part 32; the through hole arranged in the middle of the outlet dustproof part 31 is a third outlet hole 311, and the cable passes through the third outlet hole 311 through the second outlet hole 21 or the outlet groove 21; the dust-proof pad 3 is fixedly connected with the rear end cover 13 through the fixed dust-proof part 32. The dustproof pad 3 can prevent dust and other sundries from entering the wire pressing block 2 and inside the motor, so that the sealing performance of the fixed connection between the wire pressing block 2 and the motor body 12 is better.

In some embodiments, the dust-proof pad 3 is integrally formed with the wire pressing block 2. The dustproof pad 3 and the wire pressing block 2 can be made of soft materials with certain hardness, such as rubber, and can be fixedly connected with the motor body 12 better.

In some embodiments, the dust-proof pad 3 and the pressing block 2 are formed separately, and the dust-proof pad 3 is fixedly connected with the pressing block 2. Dustproof pad 3 and line ball 2 can be through the mode shaping of separately making, and because dustproof pad 3 will realize the partly of being qualified for the next round of competitions to line ball 2, the sealing of second wire hole 21 part that is, generally need form fixed connection with line ball 2. In this embodiment, the dust-proof pad 3 and the line pressing block 2 are fixedly connected by at least one of gluing, tension connection and buckle connection. In the tight connection, the outer diameter R of the outlet dustproof portion 31 is greater than or equal to the aperture R of the second outlet hole 21 or the inner diameter R of the outlet groove 21, and the outlet dustproof portion 31 and the second outlet hole 21 or the outlet groove 21 form an interference fit connection, please refer to fig. 6; the buckle is connected, and the lateral surface of the dustproof portion 31 of being qualified for the next round of competitions to and respectively be equipped with the buckle spare that matches each other on the inside wall of second wire hole 21, through the block between the buckle spare, realize the fixed connection between dustproof pad 3 and the line ball 2.

Specifically, referring to fig. 7, fig. 7 is a schematic top view illustrating a connection between the dustproof pad 3 and the wire pressing block 2, wherein a clamping groove 312 is formed on an outer surface of the wire outlet dustproof portion 31, and a hole wall of the second wire outlet hole 21 or an inner side wall of the wire outlet groove 21 is embedded in the clamping groove 312; the groove diameter of the locking groove 312 is matched with the hole wall of the second wire outlet hole 21 or the wall thickness of the inner side wall of the wire outlet groove 21. The size matching means that the size requirement of the snap connection fitting is to be met, for example, the groove diameter of the clamping groove 312 is equal to the thickness of the hole wall of the second wire outlet hole 21, or equal to the wall thickness of the inner side wall of the wire outlet groove 21, or the two are almost equal to each other, and a certain deviation is allowed, for example, the size of the clamping groove 312 may be slightly smaller than the thickness of the hole wall of the second wire outlet hole 21.

In some embodiments, the fixed dust-proof part 32 is a ring-shaped gasket formed to extend from the bottom of the outlet dust-proof part 31 along the bottom of the wire pressing block 2. The shape of the fixed dust-proof portion 32 may be a circular, rectangular, trapezoidal, square, or other annular spacer, or may be directly provided as an annular spacer that matches the shape of the bottom surface of the punch 2.

Be fixed connection between line ball 2, dustproof pad 3 and the rear end cap 13 on the motor, this fixed connection can be detachable, and wherein, detachable fixed connection shows that fixed connection can be formed between line ball 2 and the motor, but this fixed connection can be unpacked apart under the prerequisite with the help of external strength. For example, the detachable fixed connection between the two members may include a fixed connection with a threaded fastener, that is, the fixed connection between the wire pressing block 2 and the motor body 12 may be achieved by the threaded fastener. Specifically, the two sides of the wire pressing block 2 and the dustproof pad 3 are respectively provided with a first fixing through hole 22 and a second fixing through hole 33 which are arranged at corresponding positions, and the rear end cover 13 is provided with a third fixing hole 16 or a fixing groove which is arranged at a position corresponding to the first fixing through hole 22 and the second fixing through hole 33; the line pressing block 2, the dustproof pad 3 and the rear end cover 13 are fixedly connected through a fixing piece which sequentially penetrates through the first fixing through hole 22, the second fixing through hole 33 to the third fixing through hole 16 or a fixing groove from top to bottom. The fixing pieces are connected, so that the screw fasteners can be connected, and correspondingly, the fixing connection can be realized for screw holes through arranging corresponding fixing through holes. For example, to achieve the fixed connection of the threaded fastener, at least the third fixing hole 16 or the fixing groove of the rear end cover 13 should be a threaded hole/groove, and the first fixing through hole 22 and the second fixing through hole 33 provided on the punch 2 and the dust-proof pad 3 may be threaded holes or smooth holes.

When passing through threaded fastener fixed connection between wire clip 2 and motor body 12, the position that corresponds with wire clip 2 on motor body 12 is equipped with two at least screws, and the position that corresponds with the screw on wire clip 2 is equipped with the through-hole that the size matches, through screw or bolt, passes the through-hole on wire clip 2, connects the screw that forms fixed connection on motor body 12. The connection mode is that the screw holes are arranged on the motor body 12, and then the wire pressing block 2 between the screw holes and the nut of the bolt penetrates through the screw cap of the bolt through the thread fit between the bolt and the screw holes, so that the fixed connection between the wire pressing block 2 and the motor body 12 is realized. In this connection, the through-holes in the crimping blocks 2 may comprise smooth or threaded holes; when the through-hole includes a screw hole, the size of the screw hole matches the size of the bolt. When the through hole is a smooth hole, the through hole is only used for connecting the bolt with the screw hole on the motor body 12 through the bolt, and the threaded matching connection between the bolt and the line pressing block 2 is not involved; when the through hole is a screw hole, the screw hole can be set to be equal to the size of the bolt, so that the screw hole on the line pressing block 2 is also in threaded fit connection with the bolt. In addition, a washer can be arranged between the nut of the bolt and the line pressing block 2, and the stability of fixed connection is improved.

In another embodiment, a stud may be directly disposed on the motor body 12 of the motor, the height of the stud is at least greater than the depth of the through hole in the wire pressing block 2, the size of the stud is less than or equal to the size of the through hole in the wire pressing block 2, then the through hole of the wire pressing block 2 is disposed in the stud, and the stud is in threaded fit with the stud through a nut, so that the fixed connection between the motor body 12 and the wire pressing block 2 is achieved.

The fixed connection mode of the threaded fastener can realize the fixed connection between the motor body 12 and the wire pressing block 2 by only one group in general; for the stability of connection, avoid connecting to take place the aversion, threaded fastener can set up to at least two sets ofly, lets it can not shift at will after fixed connection accomplishes.

In some embodiments, the wire pressing block 2 is a trapezoidal spatial structure, the top surface and the bottom surface are both rectangular planes, and the size of the bottom surface is larger than that of the top surface; the side faces surround the periphery of the line pressing block 2, and at least two side faces are inclined planes in the side faces. The structure with the big end down and the small end up is adopted, so that the fixed connection between the wire pressing block 2 and the motor body 12 is more firm, and the connection of the threaded fastener is convenient.

In some embodiments, the cable comprises at least three wires, each of said wires comprising at least 30 strands of copper wire. In the prior art, the electric wire in the motor is generally formed into a loose wire by using stranded copper wires, the stretch-resistant and bending-resistant performance of the loose wire is weak, if a user carries the wire to move the motor, or the motor is assembled on equipment to operate, the possibility of wire breakage can be caused once the electric wire swings; in the embodiment, a plurality of electric wires are adopted to form the cable, each electric wire is composed of at least 30 strands of copper wires, and the tensile strength and the bending resistance of the electric wire can be obviously improved through the cable. Specifically, in the cable of the present embodiment, the number of strands of copper wires constituting each wire is preferably 46 or more.

The embodiment provides a stepping motor, which comprises a motor body 12, a front end cover 11 arranged at the front end part of the motor body 12, a motor rotating shaft 15 extending from the motor body 12 to the front end cover 11, and a rear end cover 13 fixed at the rear end part of the motor body 12; a first wire outlet hole 14 is formed in one side face of the rear end cover 13, the motor body 12 comprises a first outer side face 121 parallel to the axis of the motor rotating shaft 15, and the first wire outlet hole 14 is coplanar with the first outer side face 121; a wire pressing block 2 is arranged right above the first wire outlet hole 14 and is fixedly connected with the rear end cover 13; the wire pressing block 2 is provided with a second wire outlet hole 21 or a wire outlet groove 21, and a cable in the stepping motor penetrates out of the second wire outlet hole 21 or the wire outlet groove 21 through the first wire outlet hole 14; therefore, the cable is protected through the wire pressing block arranged on the outer side of the wire outlet hole on the motor shell, and the service life of the cable is prolonged.

Example two

Referring to fig. 8, the stepping motor includes a motor body 12, a front end cover 11 disposed at a front end portion of the motor body 12, a motor shaft 15 extending from the motor body 12 to the front end cover 11, and a rear end cover 13 fixed at a rear end portion of the motor body 12; a first wire outlet hole 14 is formed in one side face of the rear end cover 13, the motor body 12 comprises a first outer side face 121 parallel to the axis of the motor rotating shaft 15, and the first wire outlet hole 14 is coplanar with the first outer side face 121; a wire pressing block 2 is arranged right above the first wire outlet hole 14 and is fixedly connected with the rear end cover 13; the wire pressing block 2 is provided with a second wire outlet hole 21 or a wire outlet groove 21, and the cable in the stepper motor passes through the second wire outlet hole 21 or the wire outlet groove 21 through the first wire outlet hole 14.

In this embodiment, the pressing block 2 is a square structure, the top dimension of the pressing block is consistent with the bottom dimension of the pressing block, and the top of the square structure is a rounded corner. Referring to fig. 8, the overall size of the cable pressing block 2 in the tetragonal structure is larger, which allows accommodating larger cables, or a plurality of second wire outlet holes 21 may be provided, so that more cables can be accommodated. Set up the summit of tetragonal body structure into the fillet, firstly more pleasing to the eye, it can avoid line ball 2 to appear colliding with secondly, reduces stress concentration phenomenon, has promoted line ball 2's intensity, has also avoided the user of gouging.

EXAMPLE III

Referring to fig. 9, the stepping motor includes a motor body 12, a front end cover 11 disposed at a front end portion of the motor body 12, a motor shaft 15 extending from the motor body 12 to the front end cover 11, and a rear end cover 13 fixed at a rear end portion of the motor body 12; a first wire outlet hole 14 is formed in one side face of the rear end cover 13, the motor body 12 comprises a first outer side face 121 parallel to the axis of the motor rotating shaft 15, and the first wire outlet hole 14 is coplanar with the first outer side face 121; a wire pressing block 2 is arranged right above the first wire outlet hole 14 and is fixedly connected with the rear end cover 13; the wire pressing block 2 is provided with a second wire outlet hole 21 or a wire outlet groove 21, and the cable in the stepper motor passes through the second wire outlet hole 21 or the wire outlet groove 21 through the first wire outlet hole 14.

In the present embodiment, the wire pressing block 2 has a semi-cylindrical structure including a flat surface on the bottom surface and a curved surface on the top surface. Please refer to fig. 9, fig. 9 shows a stepping motor with a half-cylindrical structure of the wire pressing block 2, which is fixedly connected with the motor body 12 of the motor through the bottom surface of the wire pressing block 2, the wire pressing block 2 in this embodiment plays a role of protecting the cable, and the wire pressing block 2 in this shape is also beautiful and convenient to process, similar to the wire pressing block 2 shown in fig. 8, and has the effects of reducing stress concentration, improving the strength of the wire pressing block 2, and avoiding hurting the user.

It should be understood that the technical features of the embodiments of the present invention can be combined and used in one embodiment without conflict. Each example is merely a specific embodiment of the present invention.

The foregoing is a more detailed description of embodiments of the present invention, and the specific embodiments are not to be considered in a limiting sense. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (10)

1. A high-reliability outgoing line stepping motor is characterized by comprising a motor body, a front end cover arranged at the front end part of the motor body, a motor rotating shaft extending out of the motor body from the front end cover, and a rear end cover fixed at the rear end part of the motor body; a first wire outlet hole is formed in one side face of the rear end cover, the motor body comprises a first outer side face parallel to the axis of the motor rotating shaft, and the first wire outlet hole is coplanar with the first outer side face; a line pressing block is arranged right above the first line outlet hole and fixedly connected with the rear end cover; the wire pressing block is provided with a second wire outlet hole or a wire outlet groove, and a cable in the stepper motor penetrates out of the second wire outlet hole or the wire outlet groove through the first wire outlet hole.

2. The high reliability outlet stepper motor of claim 1, wherein said cable includes at least three wires, each of said wires including at least 30 strands of copper wire.

3. The high-reliability outgoing line stepping motor according to claim 1, wherein a dustproof pad is arranged between the stepping motor and the line pressing block, and the dustproof pad comprises an outgoing line dustproof portion and a fixed dustproof portion; the through hole arranged in the outlet dustproof part is a third outlet hole, and the cable passes through the second outlet hole or the outlet groove and penetrates out of the third outlet hole; the dustproof pad is fixedly connected with the rear end cover through the fixed dustproof part.

4. The stepping motor with high reliability of outgoing lines according to claim 3, wherein the outer diameter of the outgoing line dustproof portion is larger than or equal to the aperture of the second outgoing line hole or the inner diameter of the outgoing line groove, and the outgoing line dustproof portion and the second outgoing line hole or the outgoing line groove are connected in an interference fit mode.

5. The stepping motor with high reliability of outgoing lines according to claim 3, wherein the outer surface of the outgoing line dustproof portion is provided with a clamping groove, and the inner side wall of the outgoing line groove is embedded in the clamping groove; the groove diameter of the clamping groove is matched with the wall thickness of the inner side wall of the wire outlet groove in size.

6. The high-reliability outgoing line stepping motor according to claim 3, wherein the fixed dust-proof portion is an annular gasket formed by extending from the bottom of the outgoing line dust-proof portion along the bottom of the line pressing block.

7. The stepping motor with high reliability for outgoing lines as claimed in claim 3, wherein the two sides of the line pressing block and the dustproof pad are respectively provided with a first fixing through hole and a second fixing through hole at corresponding positions, and the rear end cap is provided with a third fixing hole or a fixing groove at corresponding positions with the first fixing through hole and the second fixing through hole; the fixing piece sequentially penetrates through the first fixing through hole, the second fixing through hole and the third fixing hole or the fixing groove from top to bottom to fixedly connect the line pressing block, the dustproof pad and the rear end cover.

8. The stepping motor with high reliability of outgoing lines as claimed in any one of claims 1 to 6, wherein the line pressing block is in any one of a trapezoidal space body structure, a tetragonal body structure and a semi-cylindrical body structure.

9. The stepping motor with high reliability of outgoing lines as claimed in any one of claims 1 to 6, wherein the outgoing line groove is a U-shaped groove.

10. The stepping motor with high reliability of outgoing lines as claimed in any one of claims 1 to 6, wherein an angle between a reference orthographic projection of the axis of the rotating shaft on the first outer side face and a first orthographic projection of the axis of the second outlet hole or the axis of the outlet groove on the first outer side face is 0 ° to 90 °.

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