Dustproof stepping motor

Abstract

The utility model relates to the technical field of stepping motors, in particular to a dustproof stepping motor which comprises a motor body, a rotating shaft and a dustproof assembly, the rotating shaft is installed on one side of the motor body, and the dustproof assembly comprises an installation frame, a cover plate, a felt ring, a first brush plate, a first supporting component, a second brush plate and a second supporting component. The rotating shaft is cleaned by the elastic first brush plate and the elastic second brush plate, so that a gap between the worn bristles and the rotating shaft can be avoided, and the problem that the motor shaft can be cleaned due to direct contact between the bristles and the motor shaft, but the motor shaft cannot be cleaned once the bristles are worn in the prior art is solved. And a gap is generated between the motor shaft and the motor shaft, so that the service life is short.

Description

Technical Field

[0001] The utility model relates to the technical field of stepping motors, in particular to a dustproof stepping motor. Background Art

[0002] A stepper motor is a very high-precision driving device that can convert electrical pulse signals into an open-loop control motor for angular or linear displacement. By gradually inputting different pulse signals, the rotation of the rotor can be gradually controlled. Traditional stepper motors have poor dustproof effects. During use, if dust enters the interior of the stepper motor, and if dust covers the outer surface of the internal parts of the stepper motor, it will reduce the heat dissipation effect of the stepper motor and affect the service life of the stepper motor.

[0003] Prior art CN214125012U discloses a dustproof stepper motor, comprising a main body, a rotating shaft, a stator, and a rotor. A second sealing gasket is fixedly connected to one side of the exterior of the main body, and a first sealing gasket is fixedly connected to the other side of the exterior of the main body. A cover is movably connected to one side of the main body, and fixing bolts are evenly fixedly connected to the exterior of the cover. A dustproof structure is provided at one end of the cover, and the dustproof structure includes a dustproof net, a fixing plate, a brush, and a dustproof cover. The dustproof cover is fixedly connected to the middle position inside the fixing bolts, and a brush is fixedly connected to the interior of the dustproof cover. The utility model evenly provides sound-absorbing grooves at one end of the sound-absorbing cotton. When the sound volume is transmitted to the surface of the sound-absorbing groove, it will continuously impact the sound-absorbing groove, thereby muffling the sound. The sound-absorbing cotton can absorb noise, and the evenly arranged soundproof holes and soundproof polystyrene board can achieve a soundproofing effect, reducing the noise generated during the operation of the main body.

[0004] For the above-mentioned dustproof stepper motor, since the bristles are in direct contact with the motor shaft, although the motor shaft can be cleaned, once the bristles are worn, a gap will be generated between the bristles and the motor shaft, resulting in a short service life. Utility Model Content

[0005] The purpose of the utility model is to provide a dustproof stepper motor, which solves the problem in the prior art that the bristles are in direct contact with the motor shaft. Although the motor shaft can be cleaned, once the bristles are worn, a gap will be generated between the bristles and the motor shaft, resulting in a short service life.

[0006] To achieve the above-mentioned purpose, the utility model provides a dust-proof stepper motor, comprising a motor body, a rotating shaft and a dust-proof assembly, wherein the rotating shaft is installed on one side of the motor body, and the dust-proof assembly comprises a mounting frame, a cover plate, a felt ring, a first brush plate, a first support member, a second brush plate and a second support member, the mounting frame is detachably connected to the motor body and is located on a side of the motor body close to the rotating shaft, the cover plate is detachably connected to the mounting frame and is located on a side of the cover plate away from the motor body, the felt ring is mounted on the cover plate and in contact with the rotating shaft, the first brush plate is connected to the mounting frame through the first support member, the first support member is installed in the mounting frame and supports the first brush plate, the second brush plate is connected to the mounting frame through the second support member, the second support member is installed in the mounting frame and supports the second brush plate.

[0007] Among them, the first supporting member includes a first supporting frame, a first guide rod and a first spring. The first supporting frame is fixedly connected to the mounting frame and is located on a side of the mounting frame close to the brush plate; the first guide rod is slidingly connected to the first supporting frame and fixedly connected to the first brush plate; the first spring is sleeved on the outside of the first guide rod and is located between the first supporting frame and the first brush plate.

[0008] Among them, the second supporting member includes a second supporting frame, a second guide rod and a second spring. The second supporting frame is fixedly connected to the mounting frame and is located on the side of the mounting frame opposite to the first supporting frame; the second guide rod is slidingly connected to the second supporting frame and is fixedly connected to the second brush plate; the second spring is sleeved on the outside of the second guide rod and is located between the second supporting frame and the second brush plate.

[0009] Wherein, the dustproof component further includes a shaft seal, which is installed on the motor body, located in the installation frame, and in contact with the rotating shaft.

[0010] Wherein, the dustproof component further includes a first sealing gasket and a second sealing gasket, the first sealing gasket is installed between the mounting frame and the motor body; the second sealing gasket is installed between the mounting frame and the cover plate.

[0011] The utility model discloses a dust-proof stepper motor, comprising a motor body, a rotating shaft and a dust-proof assembly, wherein the rotating shaft is mounted on one side of the motor body, and the dust-proof assembly comprises a mounting frame, a cover plate, a felt ring, a first brush plate, a first support member, a second brush plate and a second support member, wherein the mounting frame is detachably connected to the motor body and is located on a side of the motor body close to the rotating shaft, the cover plate is detachably connected to the mounting frame and is located on a side of the cover plate away from the motor body, the felt ring is mounted on the cover plate and contacts the rotating shaft, the first brush plate is connected to the mounting frame through the first support member, the first support member is mounted in the mounting frame and supports the first brush plate, the second brush plate is connected to the mounting frame through the second support member, the second support member is mounted in the mounting frame and supports the second brush plate, which solves the problem in the prior art that the bristles are in direct contact with the motor shaft. Although the motor shaft can be cleaned, once the bristles are worn, a gap will be generated between the bristles and the motor shaft, resulting in a short service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0013] Figure 1 It is a schematic diagram of the overall structure of the dustproof stepping motor of the first embodiment of the present utility model.

[0014] Figure 2 It is a structural schematic diagram of the first supporting member and the second supporting member of the first embodiment of the present utility model.

[0015] Figure 3 It is a schematic structural diagram of the shaft seal of the first embodiment of the present utility model.

[0016] Figure 4 It is a schematic diagram of the overall structure of a dustproof stepping motor according to the second embodiment of the present invention.

[0017] In the figure: 101-motor body, 102-rotating shaft, 103-mounting frame, 104-cover plate, 105-felt ring, 106-first brush plate, 107-first support frame, 108-first guide rod, 109-first spring, 110-second brush plate, 111-second support frame, 112-second guide rod, 113-second spring, 114-shaft seal, 201-first sealing gasket, 202-second sealing gasket. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0019] The first embodiment of this application is:

[0020] See also Figure 1-Figure 3 , Figure 1 This is a schematic diagram of the overall structure of the dustproof stepping motor of the first embodiment of the present invention. Figure 2 This is a schematic structural diagram of the first supporting member and the second supporting member of the first embodiment of the present utility model. Figure 3 1 is a schematic structural diagram of the shaft seal 114 according to the first embodiment of the present invention.

[0021] The dustproof stepper motor of the present utility model includes a motor body 101, a rotating shaft 102, a mounting frame 103, a cover plate 104, a felt ring 105, a first brush plate 106, a first support frame 107, a first guide rod 108, a first spring 109, a second brush plate 110, a second support frame 111, a second guide rod 112, a second spring 113, and a shaft seal 114. It solves the problem of the prior art that, due to the direct contact between the bristles and the motor shaft, although the motor shaft can be cleaned, once the bristles are worn, a gap will be generated between the bristles and the motor shaft, resulting in a shorter service life. It is understandable that the above solution can also be used to improve the service life.

[0022] In this embodiment, the motor body 101 and the rotating shaft 102 are both existing technologies. The dustproof component is installed on the motor body 101, thereby solving the problem of the existing technology that the bristles are in direct contact with the motor shaft. Although the motor shaft can be cleaned, once the bristles are worn, a gap will be generated between the bristles and the motor shaft, resulting in a short service life.

[0023] The mounting frame 103 is detachably connected to the motor body 101 and is located on a side of the motor body 101 close to the rotating shaft 102. The cover plate 104 is detachably connected to the mounting frame 103 and is located on a side of the cover plate 104 away from the motor body 101. The felt ring 105 is mounted on the cover plate 104 and in contact with the rotating shaft 102. The first brush plate 106 is connected to the mounting frame 103 via the first supporting member. The first supporting member is mounted in the mounting frame 103 and supports the first brush plate 106. The second brush plate 110 is connected to the mounting frame 103 via the second supporting member. The second supporting member The second brush plate 110 is installed in the installation frame 103 and supports the second brush plate 110. The installation frame 103 is a hollow rectangular frame with openings at both ends. The installation frame 103 is installed on the motor body 101 by bolts and covers the outside of the rotating shaft 102. The cover plate 104 is installed on the installation frame 103 by bolts, which can block the opening of the installation frame 103 to form a closed space inside the installation frame 103. A through hole is opened in the middle of the cover plate 104, and the rotating shaft 102 extends through the through hole. A card slot is provided on the inner wall of the through hole. The felt ring 105 is installed on the cover plate 104 through the card slot and is sleeved on the outside of the rotating shaft 102. The felt ring 105 can block the leakage gap to achieve the purpose of sealing. The felt ring 105 has natural elasticity and is in the shape of a loose-pore sponge. It can store lubricating oil and prevent dust. When the rotating shaft 102 rotates, the felt ring 105 scrapes the lubricating oil from the rotating shaft 102 and repeatedly lubricates itself. The first brush plate 106 is arc-shaped as a whole, and bristles are provided on the inner arc surface. The bristles are in contact with the rotating shaft 102. The first supporting member can provide elastic support for the first brush plate 106, so that the first brush plate 106 always has a tendency to approach the rotating shaft 102. The second brush plate 110 is the same as the first brush plate 106. The two are arranged in opposite directions to form a brush plate that can completely move the rotating shaft 102. The surrounding ring body can prevent the entry of dust, and at the same time, the rotating shaft 102 is cleaned as the rotating shaft 102 rotates. The second supporting member has the same function as the first supporting member, providing elastic support for the second brush plate 110, so that the second brush plate 110 always has a tendency to approach the rotating shaft 102. The rotating shaft 102 is cleaned by the elastic first brush plate 106 and the second brush plate 110, thereby avoiding the gap between the bristles and the rotating shaft 102 after wear, solving the problem of the prior art that the bristles are in direct contact with the motor shaft. Although the motor shaft can be cleaned, once the bristles are worn, a gap will be generated between the bristles and the motor shaft, resulting in a short service life.

[0024] Secondly, the first support frame 107 is fixedly connected to the mounting frame 103 and is located on the side of the mounting frame 103 close to the brush plate; the first guide rod 108 is slidably connected to the first support frame 107 and is fixedly connected to the first brush plate 106; the first spring 109 is sleeved on the outside of the first guide rod 108 and is located between the first support frame 107 and the first brush plate 106, and the first support frame 107 is U-shaped and mounted on the inner wall of the mounting frame 103, with the opening direction facing the inner wall of the mounting frame 103, and a through hole is opened on the first support frame 107, and the first guide rod 108 passes through the through hole and is slidably connected to the first support frame 107, and the first brush plate 106 is fixedly mounted on the end of the first guide rod 108, and the first spring 109 is located between the first support frame 107 and the first brush plate 106, and is in a compressed state. The elastic force of the first spring 109 makes the first brush plate 106 elastically supported.

[0025] At the same time, the second support frame 111 is fixedly connected to the mounting frame 103 and is located on the side of the mounting frame 103 opposite to the first support frame 107; the second guide rod 112 is slidably connected to the second support frame 111 and is fixedly connected to the second brush plate 110; the second spring 113 is sleeved on the outside of the second guide rod 112 and is located between the second support frame 111 and the second brush plate 110, the second support frame 111 is the same as the first support frame 107, and is located on the opposite side of the first support frame 107, the second guide rod 112 passes through the second support frame 111 and is slidably connected to the second support frame 111, and the second brush plate 110 is fixedly mounted on the end of the second guide rod 112, and the second spring 113 is located between the second support frame 111 and the second brush plate 110, and is in a compressed state. The elastic force of the second spring 113 makes the second brush plate 110 elastically supported.

[0026] In addition, the shaft seal 114 is installed on the motor body 101, located in the mounting frame 103, and in contact with the rotating shaft 102. The shaft seal 114 is installed at the place where the rotating shaft 102 extends out of the motor body 101, which can prevent liquid, gas or dust from entering the motor body 101. The shaft seal 114 is mainly composed of a shaft seal seat, a spring, a sealing ring, a sealing lip, etc., among which the sealing lip is the most important component. It mainly generates radial force and resistance through contact with the shaft surface and friction, thereby forming a sealing barrier. Through the shaft seal 114, the sealing performance of the motor body 101 is further improved.

[0027] In this embodiment, the felt ring 105 can play a primary sealing role to block dust, and the shaft seal 114 can play a secondary sealing role to further achieve a dust-proof effect. The first brush plate 106 and the second brush plate 110 are elastically supported under the elastic force of the first spring 109 and the second spring 113, which can ensure that the bristles along the length direction of the first guide rod 108 and the second guide rod 112 are always in contact with the rotating shaft 102, thereby avoiding the occurrence of wear gaps, and solving the problem of the prior art that although the motor shaft can be cleaned due to direct contact between the bristles and the motor shaft, once the bristles are worn, a gap will be generated between the bristles and the motor shaft, resulting in a short service life.

[0028] The second embodiment of this application is:

[0029] See also Figure 4 , Figure 4 2 is a schematic diagram of the overall structure of the dustproof stepping motor of the second embodiment of the present invention. Based on the first embodiment, the dustproof stepping motor of this embodiment further includes a first sealing gasket 201 and a second sealing gasket 202 .

[0030] In this embodiment, the dustproof assembly further includes a first sealing gasket 201 and a second sealing gasket 202 . The aforementioned solution can improve the sealing performance of the mounting frame 103 .

[0031] Among them, the first sealing gasket 201 is installed between the mounting frame 103 and the motor body 101; the second sealing gasket 202 is installed between the mounting frame 103 and the cover plate 104. The first sealing gasket 201 and the second sealing gasket 202 are both made of rubber. The first sealing gasket 201 is located at the connection between the mounting frame 103 and the motor body 101, and the second sealing gasket 202 is located at the connection between the cover plate 104 and the mounting frame 103. The first sealing gasket 201 and the second sealing gasket 202 are used to improve the sealing performance of the mounting frame 103.

[0032] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A dustproof stepper motor, comprising a motor body and a rotating shaft, wherein the rotating shaft is mounted on one side of the motor body, characterized in that: Also includes dust protection components; The dust-proof assembly includes a mounting frame, a cover plate, a felt ring, a first brush plate, a first support member, a second brush plate and a second support member. The mounting frame is detachably connected to the motor body and is located on a side of the motor body close to the rotating shaft. The cover plate is detachably connected to the mounting frame and is located on a side of the cover plate away from the motor body. The felt ring is mounted on the cover plate and in contact with the rotating shaft. The first brush plate is connected to the mounting frame through the first support member. The first support member is mounted in the mounting frame and supports the first brush plate. The second brush plate is connected to the mounting frame through the second support member. The second support member is mounted in the mounting frame and supports the second brush plate.

2. The dustproof stepping motor according to claim 1, wherein: The first supporting member includes a first supporting frame, a first guide rod and a first spring. The first supporting frame is fixedly connected to the mounting frame and is located on a side of the mounting frame close to the brush plate; the first guide rod is slidingly connected to the first supporting frame and fixedly connected to the first brush plate; the first spring is sleeved on the outside of the first guide rod and is located between the first supporting frame and the first brush plate.

3. The dustproof stepping motor according to claim 2, characterized in that: The second support member includes a second support frame, a second guide rod and a second spring. The second support frame is fixedly connected to the mounting frame and is located on a side of the mounting frame opposite to the first support frame; the second guide rod is slidingly connected to the second support frame and is fixedly connected to the second brush plate; the second spring is sleeved on the outside of the second guide rod and is located between the second support frame and the second brush plate.

4. The dustproof stepping motor according to claim 1, wherein: The dustproof component further includes a shaft seal, which is installed on the motor body, located in the installation frame, and in contact with the rotating shaft.

5. The dustproof stepping motor according to claim 1, wherein: The dustproof assembly further includes a first sealing gasket and a second sealing gasket, wherein the first sealing gasket is installed between the mounting frame and the motor body; and the second sealing gasket is installed between the mounting frame and the cover plate.

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