Stepping motor driver

Abstract

The utility model discloses a stepping motor driver. The stepping motor driver comprises a protective shell. The protective shell is installed on one side of the stepping motor, the protective shell is formed by combining a lower shell body and an upper shell body, a driver body is installed in an inner cavity of the lower shell body, fixing blocks are symmetrically arranged in the lower shell body, and sealing mechanisms are arranged in the fixing blocks; the sealing mechanism is arranged in the fixing block, the electromagnet is powered off, the electromagnet loses magnetic force after being powered off, the fixing plate pops up outwards under the elastic acting force of the spring in the fixing plate, then the sealing plug on one side of the fixing plate can be inserted into an inner cavity of the heat dissipation hole, and therefore the heat dissipation hole can be quickly plugged, and the service life of the heat dissipation hole is prolonged. The driver body is arranged in the protective shell, so that external dust and impurities can be prevented from entering the protective shell in the placing process of the device, the driver body in the protective shell is protected, the driver body is prevented from being damaged by the dust and the impurities, and the service life of the driver body can be prolonged.

Description

Technical Field

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

[0002] A stepper motor driver is an actuator that converts electrical pulses into angular displacement. When the stepper driver receives a pulse signal, it drives the stepper motor to rotate a fixed angle (called the "step angle") in the set direction. Its rotation is performed step by step at a fixed angle.

[0003] When the drive is in use, it is generally placed inside a protective shell to protect the drive. However, the drive will generate heat and dissipate it through the heat dissipation holes during use. When the drive is placed in the shell, external dust will enter through the heat dissipation holes and be adsorbed on the top of the device body, which will affect the service life of the drive to a certain extent. Utility Model Content

[0004] The purpose of the utility model is to provide a stepper motor driver to solve the problems raised in the above background technology.

[0005] The utility model provides the following technical solution: a stepper motor driver, comprising a protective shell; the protective shell is installed on one side of the stepper motor, the protective shell is composed of a lower shell and an upper shell, the inner cavity of the lower shell is provided with a driver body, the interior of the lower shell is symmetrically provided with fixing blocks, the interior of the fixing blocks is provided with a sealing mechanism, and the surface of the lower shell is provided with heat dissipation holes at equal intervals;

[0006] The sealing mechanism includes a placement groove, an electromagnet, a spring, a fixing plate, a sealing plug and a through hole. The inner wall of the placement groove is fixedly installed with an electromagnet, the interior of the placement groove is fixedly installed with a spring, a fixing plate is slidably installed on one side of the spring, a sealing plug is fixedly installed on one side of the fixing plate at a position corresponding to the heat dissipation hole, and through holes are opened on the surface of the fixing plate at equal intervals.

[0007] Preferably, a mounting seat is installed inside the lower shell, a mounting plate is fixedly installed on the top of the mounting seat, and threaded rods are symmetrically rotatably installed at both ends of the mounting plate.

[0008] Preferably, a heat dissipation fan is symmetrically arranged at the bottom of the lower shell, and a filtering mechanism is fixedly installed inside the lower shell.

[0009] Preferably, the filter mechanism comprises a mounting groove and a filter plate, the mounting groove is provided on the inner wall of the lower shell body, and the filter plate is installed inside the mounting groove.

[0010] Preferably, fixing holes are symmetrically provided on both sides of the driver body, and the size of the fixing holes matches the size of the threaded rod.

[0011] Preferably, the through holes and the heat dissipation holes on the surface of the fixing plate are staggered.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model provides a sealing mechanism inside the fixed block. When the electromagnet is powered off, the electromagnet loses its magnetic force, and the fixed plate pops outward under the elastic force of the internal spring, so that the sealing plug on one side of the fixed plate can be inserted into the inner cavity of the heat dissipation hole, so that the heat dissipation hole can be quickly blocked, thereby preventing external dust and impurities from entering the interior of the protective shell during the placement of the device, thereby protecting the driver body inside the protective shell, preventing dust and impurities from damaging the driver body, and thus extending the service life of the driver body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of a top view and cross-section structure of the utility model;

[0016] Figure 3 It is a side cross-sectional structural schematic diagram of the utility model;

[0017] Figure 4 It is a schematic diagram of the side cross-sectional structure of the connection between the fixing block and the sealing mechanism of the utility model;

[0018] Figure 5 For the utility model Figure 3 Enlarged structural diagram at A in the middle.

[0019] In the figure: 1, protective shell; 101, lower shell; 102, upper shell; 2, mounting seat; 3, mounting plate; 301, threaded rod; 4, driver body; 401, fixing hole; 5, heat dissipation hole; 6, fixing block; 7, sealing mechanism; 701, placement slot; 702, electromagnet; 703, spring; 704, fixing plate; 705, sealing plug; 706, through hole; 8, filtering mechanism; 801, mounting slot; 802, filter plate; 9, cooling fan. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The technical solution of the utility model is further elaborated in detail below in conjunction with the accompanying drawings and specific embodiments of the specification.

[0024] Embodiment 1:

[0025] The present application provides a stepper motor driver, comprising a protective shell 1; the protective shell 1 is installed on one side of the stepper motor, the protective shell 1 is composed of a lower shell 101 and an upper shell 102, a driver body 4 is installed in the inner cavity of the lower shell 101, a fixing block 6 is symmetrically arranged inside the lower shell 101, a sealing mechanism 7 is arranged inside the fixing block 6, and heat dissipation holes 5 are opened at equal intervals on the surface of the lower shell 101;

[0026] The sealing mechanism 7 includes a placement groove 701, an electromagnet 702, a spring 703, a fixing plate 704, a sealing plug 705 and a through hole 706. The electromagnet 702 is fixedly installed on the inner wall of the placement groove 701, and the spring 703 is fixedly installed inside the placement groove 701. A fixing plate 704 is slidably installed on one side of the spring 703. A sealing plug 705 is fixedly installed at a position corresponding to the heat dissipation hole 5 on one side of the fixing plate 704. Through holes 706 are opened at equal intervals on the surface of the fixing plate 704. The through holes 706 on the surface of the fixing plate 704 are staggered with the heat dissipation holes 5. The filtering mechanism 8 includes a mounting groove 801 and a filter plate 802. The mounting groove 801 is opened on the inner wall of the lower shell 101, and the filter plate 802 is installed inside the mounting groove 801.

[0027] Specifically, Figure 1, Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, when the device is in use, the personnel installs the protective shell 1 outside the driver body 4 to one side of the stepper motor. When the driver body 4 is placed after use, the personnel cuts off the power of the electromagnet 702 through the external controller. The electromagnet 702 loses its magnetic force after power is cut off, and the fixing plate 704 pops outward under the elastic force of the internal spring 703, so that the sealing plug 705 on one side of the fixing plate 704 can be inserted into the inner cavity of the heat dissipation hole 5, so that the heat dissipation hole 5 can be quickly blocked, so that the external dust and impurities can be prevented from entering the interior of the protective shell 1 during the placement of the device, thereby protecting the driver body 4 inside the protective shell 1, and preventing dust and impurities from damaging the driver body 4. The service life of the driver body 4 can be extended. When the driver body 4 is in use, the electromagnet 702 is energized. The magnetic force generated by the electromagnet 702 after being energized will slide the fixing plate 704 inside the placement groove 701. At the same time, the sealing plug 705 on one side of the fixing plate 704 can be separated from the heat dissipation hole 5. When the driver body 4 is in use, the external wind enters the interior of the protective shell 1 along the heat dissipation hole 5 and the through hole 706 to dissipate the heat of the driver body 4, thereby ensuring that the driver body 4 can be used normally. When the external wind enters the interior of the protective shell 1, the dust inside the wind can be filtered through the filter plate 802, thereby preventing the dust from being adsorbed on the surface of the driver body 4, thereby ensuring that the device can be used normally.

[0028] Further, a mounting seat 2 is installed inside the lower housing 101, a mounting plate 3 is fixedly installed on the top of the mounting seat 2, threaded rods 301 are symmetrically rotatably installed at both ends of the mounting plate 3, a heat dissipation fan 9 is symmetrically arranged at the bottom of the lower housing 101, a filter mechanism 8 is fixedly installed inside the lower housing 101, and fixing holes 401 are symmetrically opened on both sides of the driver body 4, and the size of the fixing hole 401 matches the size of the threaded rod 301;

[0029] Specifically, Figure 1 , Figure 2 As shown, when the device is in use, a person places the driver body 4 on the inner side of the mounting plate 3, and then rotates the threaded rod 301 so that the threaded rod 301 is rotated into the interior of the fixing hole 401, and then the driver body 4 is fixedly mounted on the surface of the mounting base 2, so that the driver body 4 can be protected by the protective shell 1.

[0030] Working principle: The protective shell 1 outside the driver body 4 is installed to one side of the stepper motor. When the driver body 4 is placed after use, the personnel will cut off the power of the electromagnet 702 through the external controller. After the electromagnet 702 is powered off, it loses its magnetic force, and the fixing plate 704 will pop outward under the elastic force of the internal spring 703, so that the sealing plug 705 on one side of the fixing plate 704 can be inserted into the inner cavity of the heat dissipation hole 5, so that the heat dissipation hole 5 can be quickly blocked, so as to prevent external dust and impurities from entering the interior of the protective shell 1 during the placement of the device, thereby protecting the driver body 4 inside the protective shell 1 and preventing dust and impurities from damaging the driver body 4. When the driver body 4 is in use, the electromagnet 702 is energized, and the magnetic force generated by the electromagnet 702 after being energized will slide the fixing plate 704 inside the placement groove 701. At the same time, the sealing plug 705 on one side of the fixing plate 704 can be separated from the heat dissipation hole 5. When the driver body 4 is in use, the external wind enters the interior of the protective shell 1 along the heat dissipation hole 5 and the through hole 706 to dissipate the heat of the driver body 4, thereby ensuring that the driver body 4 can be used normally. When the external wind enters the interior of the protective shell 1, the dust inside the wind can be filtered through the filter plate 802, thereby preventing the dust from being adsorbed on the surface of the driver body 4.

[0031] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A stepper motor driver, comprising a protective shell (1); characterized in that: The protective shell (1) is installed on one side of the stepper motor. The protective shell (1) is composed of a lower shell (101) and an upper shell (102). A driver body (4) is installed in the inner cavity of the lower shell (101). Fixed blocks (6) are symmetrically arranged inside the lower shell (101). A sealing mechanism (7) is arranged inside the fixed blocks (6). Heat dissipation holes (5) are arranged at equal intervals on the surface of the lower shell (101). The sealing mechanism (7) comprises a placement groove (701), an electromagnet (702), a spring (703), a fixing plate (704), a sealing plug (705) and a through hole (706); the electromagnet (702) is fixedly mounted on the inner wall of the placement groove (701); the spring (703) is fixedly mounted inside the placement groove (701); a fixing plate (704) is slidably mounted on one side of the spring (703); a sealing plug (705) is fixedly mounted on one side of the fixing plate (704) at a position corresponding to the heat dissipation hole (5); and through holes (706) are provided on the surface of the fixing plate (704) at equal intervals.

2. A stepper motor driver according to claim 1, characterized in that: A mounting seat (2) is installed inside the lower shell (101), a mounting plate (3) is fixedly installed on the top of the mounting seat (2), and threaded rods (301) are symmetrically rotatably installed at both ends of the mounting plate (3).

3. A stepper motor driver according to claim 1, characterized in that: A heat dissipation fan (9) is symmetrically arranged at the bottom of the lower housing (101), and a filtering mechanism (8) is fixedly installed inside the lower housing (101).

4. A stepper motor driver according to claim 3, characterized in that: The filtering mechanism (8) comprises a mounting groove (801) and a filtering plate (802); the mounting groove (801) is provided on the inner wall of the lower shell (101); and the filtering plate (802) is installed inside the mounting groove (801).

5. A stepper motor driver according to claim 1, characterized in that: The driver body (4) is symmetrically provided with fixing holes (401), and the size of the fixing holes (401) matches the size of the threaded rod (301).

6. A stepper motor driver according to claim 1, characterized in that: The through holes (706) on the surface of the fixing plate (704) are staggered with the heat dissipation holes (5).

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