CN209930724U

CN209930724U - Stepping motor driver with protective device

Info

Publication number: CN209930724U
Application number: CN201920518964.3U
Authority: CN
Inventors: 贺子丽
Original assignee: Nanjing Jiazehe Microelectronics Co Ltd
Current assignee: Nanjing Jiazehe Microelectronics Co Ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-01-10
Anticipated expiration: 2029-04-16

Abstract

The utility model relates to a step motor driver with protector, it includes the bottom plate, be provided with the electronic circuit on the bottom plate, the bottom plate outside is provided with the shell, set up the first through-hole that electronic circuit wore to establish on the shell, be provided with the rubber closing plate between shell and the bottom plate, the rubber closing plate include with shell fixed connection's first rubber crown plate, with bottom plate fixed connection's second rubber crown plate, first rubber crown plate and the laminating of second rubber crown plate phase-match have been seted up at least three ventilation hole on the shell, fixedly connected with and the dampproofing subassembly of ventilation hole assorted on the shell. The utility model provides a rubber seal plate can be to playing sealed waterproof effect between shell and the bottom plate, when making motor driver work under humid environment, the sealing connection effect between shell and the bottom plate is better to can play dampproofing waterproof effect to the inside electronic circuit of driver, guarantee the operation that the driver can be normal in driving motor.

Description

Stepping motor driver with protective device

Technical Field

The utility model relates to a motor driver's technical field, in particular to step motor driver with protector.

Background

The motor driver often works in an environment with high humidity, and when the humidity is high, the electrical insulation strength of the motor driver is reduced, so that the leakage current between different devices in the motor driver or between different pins of the same electronic component is increased, and finally, breakdown is caused, so that the internal circuit (such as the driver) of the motor driver is damaged. Therefore, there is a risk that the motor driver operates in a high humidity environment.

In the prior art, a motor driver mainly adopts a physical moisture-proof method, that is, a moisture-proof layer is additionally arranged on the motor driver, for example, moisture-proof oil or moisture-proof paint is coated on the motor driver, or the motor driver is packaged in a closed container. However, since there are many power devices in the motor driver and the power devices generate large heat during operation, if the above-mentioned physical moisture-proof method is adopted, it is difficult to dissipate heat inside the motor driver, so as to increase the thermal resistance inside the motor driver, so that the heat inside the motor driver is not easily dissipated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a step motor driver with protector, it has dampproofing and the radiating effect is good, guarantees the advantage of motor driver reliable operation.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the stepping motor driver with the protection device comprises a base plate, wherein an electronic circuit is arranged on the base plate, a shell is arranged on the outer side of the base plate, a first through hole for the electronic circuit to penetrate is formed in the shell, a rubber sealing plate is arranged between the shell and the base plate and comprises a first rubber annular plate fixedly connected with the shell and a second rubber annular plate fixedly connected with the base plate, the first rubber annular plate is attached to the second rubber annular plate in a matched mode, at least three ventilation holes are formed in the shell, and a moisture-proof assembly matched with the ventilation holes is fixedly connected to the shell.

Through adopting above-mentioned technical scheme, rubber seal plate between shell and the bottom plate can play waterproof sealing's effect between shell and the bottom plate, when making motor driver work under moist environment, the sealing connection effect between shell and the bottom plate is better, thereby can play dampproofing waterproof effect to the inside electronic circuit of driver, guarantee the operation that the driver can be normal in driving motor, in the time of driver normal operating, the ventilation hole can play radiating effect, make giving out of heat in the driver can be timely, guarantee the reliable operation of driver.

The utility model discloses further set up to: the cross section of the first rubber annular plate is T-shaped, the second rubber annular plate is provided with a groove, and the vertical end of the first rubber annular plate is in clamping fit with the groove.

Through adopting above-mentioned technical scheme, when shell and bottom plate match the installation, the vertical one end of first rubber crown plate can match with the recess looks joint on the second rubber crown plate to can make second rubber crown plate form a waterproof platform, thereby can play better waterproof effect of sealing, can make the electric current not receive the interference of damp environment when the motor operation, guarantee step motor's normal operating.

The utility model discloses further set up to: the first rubber ring plate is internally and fixedly connected with a first magnetic block, the second rubber ring plate is internally and fixedly connected with a second magnetic block, and the first magnetic block and the second magnetic block are arranged in a matched mode.

Through adopting above-mentioned technical scheme, when first rubber ring board and second rubber ring board phase-match joint, first magnet can attract with second magnet each other, makes first rubber ring board and second rubber ring board laminate each other more closely to can make the waterproof effect of first rubber ring board and second rubber ring board better, can make the operation that driver and motor are more stable.

The utility model discloses further set up to: the moisture-proof assembly comprises a protective cover plate fixedly connected with the shell, second through holes arranged on two sides of the protective cover plate, two layers of protective nets fixedly connected with the second through holes, and a first waterproof cotton sheet arranged between the two layers of protective nets, wherein the protective cover plate is fixedly connected with the shell.

Through adopting the above technical scheme, protective cover can play certain guard action to the ventilation hole, when ventilation hole heat dissipation ventilates, protective cover can block dust impurity and vapor in the air, can play better guard action to the driver is inside, the protection network simultaneously protects with first waterproof cotton piece jointly, can keep apart the absorption to the hydrone in the air and block, prevent that steam from entering into the inside of driver, thereby guarantee the normal good operation of driver in radiating.

The utility model discloses further set up to: be provided with the layer that absorbs water in the ventilation hole, the layer that absorbs water includes the cotton piece of the second absorbent cotton piece of fixed connection with ventilation hole fixed connection, the cotton piece of active carbon who absorbs water cotton piece fixed connection with the second, the cotton piece that absorbs water of second is provided with two-layerly, the cotton piece setting of active carbon is between the cotton piece that absorbs water at two-layer second.

Through adopting above-mentioned technical scheme, the cotton piece of second absorption and the cotton piece of active carbon in the ventilation hole can adsorb the absorption to the inside moisture of driver, makes inside running state and the operational environment who keeps dry of driver to can be more reliable stable when the driver moves.

The utility model discloses further set up to: and a rubber protective sleeve matched with the electronic circuit is fixedly connected in the first through hole.

Through adopting above-mentioned technical scheme, the rubber protection casing can play certain sealed protection's effect to the gap between electronic circuit and the first through-hole to prevent that moisture from entering into the driver from the gap between electronic circuit and the first through-hole inside, thereby can guarantee the reliable operation of driver.

The utility model discloses further set up to: the inner side wall of the rubber protective sleeve is fixedly connected with a sponge ring piece.

Through adopting above-mentioned technical scheme, the sponge ring piece can laminate mutually with the electronic circuit to can play sealed protection's effect to the electronic circuit when the electronic circuit operation, prevent that water from permeating to the driver in, make the driver can even running.

The utility model discloses further set up to: and the spring arranged along the radial direction is fixedly connected inside the sponge ring piece.

Through adopting above-mentioned technical scheme, under the effect of spring, the sponge ring piece can laminate mutually with the surface of electronic circuit to can reduce the gap between electronic circuit and the sponge ring piece, can prevent that moist air from getting into inside the driver, thereby can guarantee the production operation of driver.

To sum up, the utility model discloses a beneficial technological effect does:

1. the rubber sealing plate can play a role in sealing and waterproofing between the shell and the bottom plate, so that when the motor driver works in a humid environment, the sealing connection effect between the shell and the bottom plate is better, the moistureproof and waterproof effects can be achieved on an electronic circuit in the driver, and the normal operation of the driver when the motor is driven can be ensured;

2. when the driver normally operates, the vent holes can play a role in heat dissipation, so that heat in the driver can be dissipated in time, and the reliable operation of the driver is ensured;

3. the moisture-proof component can isolate, adsorb and block water molecules in the air, and prevent water vapor from entering the driver, so that the normal and good operation of the driver is ensured during heat dissipation;

4. the rubber protection casing can play certain sealed protection's effect to the gap between electronic circuit and the first through-hole to prevent that moisture from entering into inside the driver from the gap between electronic circuit and the first through-hole, thereby can guarantee the reliable operation of driver.

Drawings

Fig. 1 is a schematic view of an overall structure for embodying a driver;

FIG. 2 is a schematic sectional view of a part of a structure for embodying a driver;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

FIG. 4 is a schematic view showing a structure of a position for embodying a vent hole;

FIG. 5 is an enlarged schematic view of the structure shown at B in FIG. 2;

FIG. 6 is a schematic illustration of a specific construction for embodying a moisture barrier assembly;

fig. 7 is an enlarged schematic view of a structure at C in fig. 2.

In the figure, 1, a bottom plate; 2. an electronic circuit; 3. a housing; 4. a first through hole; 5. a rubber sealing plate; 51. a first rubber ring plate; 52. a second rubber ring plate; 53. a groove; 6. a vent hole; 7. a moisture barrier component; 71. a protective cover plate; 72. a second through hole; 73. a protective net; 74. a first waterproof cotton sheet; 8. a first magnetic block; 9. a second magnetic block; 10. a water-absorbing layer; 101. a second absorbent cotton sheet; 102. activated carbon cotton sheets; 11. a rubber protective sleeve; 12. a sponge ring sheet; 13. a spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): the utility model provides a step motor driver with protector, as shown in fig. 1, including bottom plate 1, be provided with electronic circuit 2 on bottom plate 1, bottom plate 1 outside is provided with shell 3, first through-hole 4 has been seted up on the shell 3, electronic circuit 2 passes from first through-hole 4, a plurality of dampproofing subassemblies 7 of fixedly connected with on the shell 3, dampproofing subassembly 7 can be guaranteeing the good ventilation and heat dissipation of driver, can guarantee the good operation of driver simultaneously again, fixedly connected with and electronic circuit 2 assorted rubber protection casing 11 in the first through-hole 4, rubber protection casing 11 can play the effect of sealed protection to the gap between electronic circuit 2 and the first through-hole 4, prevent that water from permeating the driver between the gap between electronic circuit 2 and the first through-hole 4, guarantee the good operation of driver.

As shown in fig. 1, a rubber sealing plate 5 is disposed between the housing 3 and the bottom plate 1, and the rubber sealing plate 5 can play a role of sealing and protecting between the bottom plate 1 and the housing 3, and prevent moist air or water vapor from penetrating into the interior of the drive.

As shown in fig. 2 and 3, the rubber sealing plate 5 includes a first rubber ring plate 51 fixedly connected to the housing 3, and a second rubber ring plate 52 fixedly connected to the bottom plate 1, the first rubber ring plate 51 is matched and attached to the second rubber ring plate 52, the cross section of the first rubber ring plate 51 is set to be "T" shaped, a groove 53 is formed in the second rubber ring plate 52, the vertical end of the first rubber ring plate 51 is matched with the groove 53 in a clamping manner, when the first rubber ring plate 51 is attached to the second rubber ring plate 52, the vertical end of the first rubber ring plate 51 can be matched with the groove 53, and therefore the waterproof effect is more remarkable.

As shown in fig. 2 and 3, the first magnetic block 8 is fixedly connected in the first rubber ring plate 51, the second magnetic block 9 is fixedly connected in the second rubber ring plate 52, the first magnetic block 8 and the second magnetic block 9 are matched with each other, when the first rubber ring plate 51 is clamped with the second rubber ring plate 52 in a matching manner, the first magnetic block 8 can attract the second magnetic block 9, so that the first rubber ring plate 51 and the second rubber ring plate 52 are attached to each other more tightly, and the waterproof effect is better.

As shown in fig. 4, more than three ventilation holes 6 are formed in the housing 3, the ventilation holes 6 are matched with the moisture-proof component 7, and the ventilation holes 6 can ensure a good heat dissipation effect of the driver.

As shown in fig. 5, be provided with the layer 10 that absorbs water in the ventilation hole 6, the layer 10 that absorbs water includes the cotton piece 101 that absorbs water with ventilation hole 6 fixed connection's second, the cotton piece 102 of active carbon with the cotton piece 101 fixed connection that absorbs water of second, the cotton piece 101 that absorbs water of second is provided with two-layerly, the cotton piece 102 setting of active carbon is between the cotton piece 101 that absorbs water of two-layer second, the cotton piece 101 and the cotton piece 102 that absorbs water of second in the ventilation hole 6 can adsorb the absorption to the inside moisture of driver, make the inside dry operational environment that keeps of driver, make the driver can normal steady operation.

As shown in fig. 6, the moisture-proof assembly 7 includes a protective cover plate 71 fixedly connected to the housing 3, second through holes 72 disposed at two sides of the protective cover plate 71, two layers of protective nets 73 fixedly connected to the second through holes 72, and a first waterproof cotton sheet 74 disposed between the two layers of protective nets 73, the first waterproof cotton sheet 74 is fixedly connected to the two layers of protective nets 73, the protective nets 73 and the first waterproof cotton sheet 74 jointly protect against moisture, and can isolate, adsorb and block water molecules in the air, so as to prevent water vapor from entering the inside of the driver, thereby ensuring normal and good operation of the driver in heat dissipation.

As shown in fig. 7, the inner side wall of the rubber protective sleeve 11 is fixedly connected with a sponge ring piece 12, the inside of the sponge ring piece 12 is fixedly connected with a spring 13 arranged along the radial direction, and under the action of the spring 13, the sponge ring piece 12 can be attached to the outer side wall of the electronic circuit 2, so that moisture is prevented from entering the inside of the driver from a gap between the electronic circuit 2 and the first through hole 4, and the reliable operation of the driver can be ensured.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a step motor driver with protector, includes bottom plate (1), be provided with electronic circuit (2) on bottom plate (1), bottom plate (1) outside is provided with shell (3), set up first through-hole (4) that electronic circuit (2) were worn to establish on shell (3), its characterized in that: be provided with rubber seal plate (5) between shell (3) and bottom plate (1), rubber seal plate (5) include with shell (3) fixed connection's first rubber crown plate (51), with bottom plate (1) fixed connection's second rubber crown plate (52), first rubber crown plate (51) and second rubber crown plate (52) phase-match laminating, at least three ventilation hole (6) have been seted up on shell (3), fixedly connected with and ventilation hole (6) assorted dampproofing subassembly (7) on shell (3).

2. The stepper motor driver with a guard as claimed in claim 1, wherein: the cross section of the first rubber annular plate (51) is T-shaped, a groove is formed in the second rubber annular plate (52), and the vertical end of the first rubber annular plate (51) is in clamping fit with the groove.

3. The stepping motor driver with a guard according to claim 2, wherein: the magnetic bearing is characterized in that a first magnetic block (8) is fixedly connected in the first rubber ring plate (51), a second magnetic block (9) is fixedly connected in the second rubber ring plate (52), and the first magnetic block (8) and the second magnetic block (9) are arranged in a matched mode.

4. The stepper motor driver with a guard as claimed in claim 1, wherein: the moisture-proof assembly (7) comprises a protective cover plate (71) fixedly connected with the shell (3), second through holes (72) formed in two sides of the protective cover plate (71), two layers of protective nets (73) fixedly connected with the second through holes (72) and a first waterproof cotton sheet (74) arranged between the two layers of protective nets (73), wherein the first waterproof cotton sheet (74) is fixedly connected with the two layers of protective nets (73).

5. The stepper motor driver with a guard as claimed in claim 4, wherein: be provided with layer (10) that absorbs water in ventilation hole (6), layer (10) that absorbs water include with ventilation hole (6) fixed connection's second cotton piece (101) that absorb water, with second cotton piece (102) of activated carbon that absorb water cotton piece (101) fixed connection, the second cotton piece (101) that absorbs water is provided with two-layerly, activated carbon cotton piece (102) set up between two-layer second cotton piece (101) that absorbs water.

6. The stepper motor driver with a guard as claimed in claim 1, wherein: and a rubber protective sleeve (11) matched with the electronic circuit (2) is fixedly connected in the first through hole (4).

7. The stepper motor driver with a guard as claimed in claim 6, wherein: the inner side wall of the rubber protective sleeve (11) is fixedly connected with a sponge ring piece (12).

8. The stepper motor driver with a guard as claimed in claim 7, wherein: the sponge ring piece (12) is fixedly connected with a spring (13) arranged along the radial direction.