Integrated dustproof and waterproof cover for motor encoder

Abstract

The utility model discloses a kind of integrated dustproof waterproof cover of motor encoder, it is related to motor technical field, including motor body and the fixed frame vertically fixed on the outer side wall on the top of motor body, the fixed frame length direction is consistent with the width direction of motor body and the position of motor body top corresponding to the fixed frame is penetrated and is provided with article channel, the opening of the end of the fixed frame away from motor body is detachably connected with horizontal filter screen, sealing mechanism is equipped in fixed frame;In the utility model, by sealing mechanism, the "Y" shape structure of baffle is used to close or open fixed frame and article channel, and then control whether the entry of external airflow, cooperate driving mechanism can be according to the temperature inside motor body and then control the opening and closing of sealing mechanism, moisture absorption plate can absorb moisture in air, baffle, inclined part, drainage groove mutually cooperate and can discharge excess water, baffle can block dust.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to an integrated dustproof and waterproof cover for a motor encoder. Background Technology

[0002] A motor encoder is a core feedback element in a motor control system. It converts the position, speed, and direction of the motor rotor into digital or analog electrical signals using photoelectric, magnetoelectric, or capacitive sensing technologies to achieve closed-loop control. Its core components include a code disk, sensors, and signal processing circuits. Some existing motors directly integrate the motor encoder within the motor itself.

[0003] Existing fan-based cooling systems are prone to fan overload or malfunction, leading to reduced cooling efficiency. Furthermore, the existing motor housings have a certain wall thickness between the inside and outside, resulting in a smaller direct contact area between the motor's interior and the external environment, which affects the efficiency and effectiveness of heat dissipation. Additionally, existing motors often use sealing rings for joint sealing, and poor heat dissipation can lead to overheating, which can accelerate the aging of the sealing rings and consequently affect the motor's waterproof and dustproof performance.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this utility model is to provide an integrated dustproof and waterproof cover for a motor encoder to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides an integrated dustproof and waterproof cover for a motor encoder, including a motor body and a fixing frame vertically fixed to the outer side wall of the top of the motor body. The length direction of the fixing frame is consistent with the width direction of the motor body, and a storage channel is provided through the top of the motor body corresponding to the position of the fixing frame. A horizontal filter screen is detachably connected to the opening at the end of the fixing frame away from the motor body. A sealing mechanism is provided inside the fixing frame, and the sealing mechanism includes:

[0007] Multiple moisture-absorbing rollers are linearly and equally spaced on the inner sidewall of the fixed frame along the length direction of the fixed frame. The axial direction of the moisture-absorbing rollers is consistent with the width direction of the fixed frame. Each moisture-absorbing roller includes multiple moisture-absorbing plates arranged in a ring array and abutting each other. Six baffles arranged in a ring array about its axial direction are provided on the outside of the moisture-absorbing rollers. The baffles arranged crosswise on the outside of two adjacent moisture-absorbing rollers overlap.

[0008] The baffle and the moisture-absorbing plate are provided with the same driving mechanism on the same side along their own axial direction. The cross section of the baffle along its radial direction is "Y" shaped and the three ends extending from the outer arc wall are of the same length. The same inclined part is provided on the outer side wall of the baffle between the two extensions. The inclined part is inclined towards the end of the baffle away from the driving mechanism. The fixed frame is provided with a drainage groove on the side wall corresponding to this side. The drainage groove passes through the fixed frame to the outside.

[0009] Furthermore, a storage groove is provided on the inner side wall of the fixed frame at the end of the absorbent roller away from the drainage groove along the axial direction. The driving mechanism includes a limiting plate fixed to the end of the inner arc wall of the storage groove near the absorbent plate. Multiple sliding channels are provided on the outer edge of the side wall of the limiting plate near the absorbent plate in a circular array along its axial direction. The length direction of the sliding channels is consistent with the radial direction of the limiting plate and the sliding channels are arranged to pass through the limiting plate along the axial direction.

[0010] Furthermore, a rotating disk is coaxially provided on the side of the limiting disk away from the moisture-absorbing plate. Multiple guide grooves are arranged in a circular array along the axis of the rotating disk on the side wall near the limiting disk. One end of the guide groove is set towards the axis of the rotating disk, and the other end is bent towards the outer edge of the rotating disk. The multiple guide grooves correspond one-to-one with multiple sliding channels. A sliding plate is slidably provided in the guide groove. The end of the sliding plate away from the rotating disk slides through the sliding channel and is fixed to the moisture-absorbing plate. An external gear ring is coaxially fixed on the outer edge of the side wall of the rotating disk away from the limiting disk. A gear is coaxially fixed on the end of the baffle near the rotating disk. The gear meshes with the external gear ring. The same gear meshes on the side of two adjacent external gear rings that are close to each other.

[0011] Furthermore, the axial length of the external gear ring located at one end is greater than the axial length of the gear it meshes with. A horizontal rack rod meshes with the bottom of the external gear ring. The rack rod slides horizontally on the inner wall of the bottom of the storage slot. A horizontal piston mechanism is fixed to one end of the rack rod away from the center of the fixed frame along its length direction. A capillary tube is fixed to the end of the piston mechanism away from the rack rod. The end of the capillary tube away from the piston mechanism is installed through and installed on the inner wall of the motor body and fixed with a sealing bag. Flexible water-absorbing material is laid on the outer arc wall of the moisture-absorbing plate, and waterproof material is laid on the outer surface of the baffle and the inclined part.

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

[0013] 1. Through the sealing mechanism, the "Y"-shaped structure of the baffle is used to close or open the fixed frame and the storage channel, thereby controlling whether the external airflow enters or not. In conjunction with the drive mechanism, the opening and closing of the sealing mechanism can be controlled according to the internal temperature of the motor body. The moisture-absorbing plate can absorb moisture in the air. The baffle, the inclined part, and the drainage groove work together to drain excess water. The baffle can block dust.

[0014] 2. When the driving mechanism opens along with the sealing mechanism, it will squeeze the baffle and then squeeze the moisture-absorbing plate to expel excess water, thus maintaining its moisture absorption capacity. The excess water will be discharged along the inclined part and drainage groove on the baffle. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of an integrated dustproof and waterproof cover for a motor encoder;

[0016] Figure 2 This is a schematic diagram of the structure of the fixing frame in an integrated dustproof and waterproof cover for a motor encoder;

[0017] Figure 3 This is a schematic diagram showing the connection relationship between the sealing mechanism and the drive mechanism in an integrated dustproof and waterproof cover for a motor encoder.

[0018] Figure 4 An exploded view of the drive mechanism in an integrated dustproof and waterproof cover for a motor encoder;

[0019] Figure 5 This is a schematic diagram of the structure of a baffle in an integrated dustproof and waterproof cover for a motor encoder;

[0020] Figure 6 A schematic diagram of the planar structure of the sealing mechanism in an integrated dustproof and waterproof cover for a motor encoder when it is opened;

[0021] Figure 7 This is a schematic diagram of the planar structure of the sealing mechanism in an integrated dustproof and waterproof cover for a motor encoder when it is closed.

[0022] In the picture:

[0023] 10. Motor body; 11. Fixing frame; 12. Filter screen; 13. Baffle; 131. Inclined part;

[0024] 14. Moisture-absorbing plate; 15. Limiting plate; 151. Sliding channel; 16. Rotating plate; 161. Guide groove;

[0025] 20. Gear; 21. External gear ring; 22. Rack and pinion; 23. Piston mechanism; 24. Sealing bladder;

[0026] 25. Capillary tube. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see the appendix Figure 1 To be continued Figure 7 This utility model provides an integrated dustproof and waterproof cover for a motor encoder: it includes a motor body 10 and a fixing frame 11 vertically fixed to the outer side wall of the top of the motor body 10. The length direction of the fixing frame 11 is consistent with the width direction of the motor body 10, and a storage channel is provided through the top of the motor body 10 corresponding to the position of the fixing frame 11. A horizontal filter screen 12 is detachably connected to the opening at the end of the fixing frame 11 away from the motor body 10. A sealing mechanism is provided inside the fixing frame 11, and the sealing mechanism includes:

[0029] Multiple moisture-absorbing rollers are linearly and equally spaced on the inner wall of the fixed frame 11 along the length direction of the fixed frame 11. The axial direction of the moisture-absorbing rollers is consistent with the width direction of the fixed frame 11. Each moisture-absorbing roller includes multiple moisture-absorbing plates 14 arranged in a ring array and abutting each other. Six baffles 13 arranged in a ring array about its axial direction are provided on the outer side of the moisture-absorbing roller. The baffles 13 arranged crosswise on the outer side of two adjacent moisture-absorbing rollers overlap.

[0030] The baffle 13 and the moisture-absorbing plate 14 are provided with the same driving mechanism on the same side along their own axial direction. The cross section of the baffle 13 along its radial direction is "Y" shaped and the three ends extending from the outer arc wall are of the same length. The same inclined part 131 is provided on the outer side wall of the baffle 13 between the two extensions. The inclined part 131 is inclined towards the end of the baffle 13 away from the driving mechanism. The fixing frame 11 is provided with a drainage groove on the side wall corresponding to this side. The drainage groove passes through the fixing frame 11 to the outside.

[0031] A storage slot is provided on the inner side wall of the fixed frame 11 at the end of the absorbent roller away from the drainage groove along the axial direction. The driving mechanism includes a limiting plate 15 fixed to the end of the inner arc wall of the storage slot near the absorbent plate 14. Multiple sliding channels 151 are provided on the outer edge of the side wall of the limiting plate 15 near the absorbent plate 14 in a circular array along its axial direction. The length direction of the sliding channels 151 is consistent with the radial direction of the limiting plate 15 and the sliding channels 151 are arranged to pass through the limiting plate 15 along the axial direction.

[0032] A rotating disk 16 is coaxially provided on the side of the limiting disk 15 away from the moisture-absorbing plate 14. Multiple guide grooves 161 are provided on the side wall of the rotating disk 16 near the limiting disk 15, which are arranged in a ring array about its axis. One end of the guide groove 161 is set towards the axis of the rotating disk 16, and the other end is bent towards the outer edge of the rotating disk 16. The multiple guide grooves 161 correspond one-to-one with the multiple sliding channels 151.

[0033] A sliding plate is slidably provided in the guide groove 161. The end of the sliding plate away from the rotating disk 16 slides through the sliding channel 151 and is fixed on the moisture-absorbing plate 14.

[0034] It should be noted that when the temperature inside the motor body 10 is high, the drive mechanism drives the gear 20 to mesh and rotate with the external gear ring 21. Since the baffles 13 on the side of the two adjacent cleaning mechanisms are identical, the two adjacent external gear rings 21 mesh with the same gear 20, thereby transmitting power to drive all the baffles 13 and the rotating disk 16 to rotate, opening the storage channel. Specifically, the rotation is about 60 degrees. Figure 6 In the state shown, the two adjacent baffles 13 abut against each other and form a labyrinth structure that maintains air circulation while preventing dust and moisture from entering directly.

[0035] The sliding channel 151 is used to guide and limit the movement trajectory of the skateboard, so that multiple skateboards can move synchronously in a centripetal or centrifugal motion. In one possible embodiment, a sliding column is fixed on the skateboard. The cross-section of the end of the sliding column near the limiting plate 15 is rectangular. When the rotating plate 16 rotates, the arc-shaped guide groove 161 on it can force the skateboard to slide along the sliding channel 151, thereby realizing the synchronous centripetal or centrifugal motion of the moisture-absorbing plate 14. Thus, when the sealing mechanism opens the storage channel, the contraction will not be blocked, and when the sealing mechanism closes the storage channel, the opening will generate relative compression to squeeze out excess water.

[0036] like Figure 7 As shown, when adjacent baffles 13 abut against each other, they form a honeycomb-shaped closed structure, which effectively prevents dust from entering the motor body 10 and plays a dustproof role. At this time, even if water enters directly, it will be discharged into the drainage groove along the inclined part 131. Furthermore, sealing strips are horizontally fixed at both ends of the fixed frame 11 corresponding to the positions of the baffles 13, which are used to keep the baffles 13 at the ends abutting against the sealing strips to close the gaps.

[0037] In one possible embodiment, the flexible absorbent material is a sponge or absorbent resin, which can squeeze out water after absorbing water and slowly return to its original size after the squeezing stops, or expand to its initial volume after the next water absorption.

[0038] Please see the appendix Figure 1 To be continued Figure 7The present invention provides a technical solution: an external gear ring 21 is coaxially fixed on the outer edge of the side wall of the rotating disk 16 away from the limiting disk 15, and a gear 20 is coaxially fixed on the end of the baffle 13 near the rotating disk 16. The gear 20 meshes with the external gear ring 21, and the same gear 20 meshes with the side of two adjacent external gear rings 21 that are close to each other.

[0039] The axial length of the external toothed ring 21 located at one end is greater than the axial length of the gear 20 it meshes with. The bottom of the external toothed ring 21 is meshed with a horizontal rack 22, which slides horizontally on the inner wall of the bottom of the storage slot.

[0040] A horizontal piston mechanism 23 is fixed at one end of the rack 22 away from the center of the fixed frame 11 along its length direction. A capillary tube 25 is fixed at one end of the piston mechanism 23 away from the rack 22. The capillary tube 25 is installed through the end away from the piston mechanism 23 and is fixed to the inner wall of the motor body 10 and has a sealing bladder 24.

[0041] The outer arc wall of the moisture-absorbing plate 14 is covered with a flexible water-absorbing material, and the outer surface of the baffle 13 and the inclined part 131 is covered with a waterproof material.

[0042] It should be noted that: the sealed bladder 24 is filled with a heat-sensitive liquid, that is, the volume and pressure will increase after being heated; the piston mechanism 23 includes a piston rod and a piston cylinder that are slidably connected to each other; the piston rod and the rack rod 22 are fixedly connected to each other; and the piston cylinder and the capillary tube 25 are interconnected.

[0043] The sealing bladder 24 is made of a material with good thermal conductivity to better receive temperature changes inside the motor body 10. The capillary tube 25 is made of a material with poor thermal conductivity to reduce heat loss. In one possible embodiment, the thermosensitive liquid is alcohol, which increases in volume when heated. Therefore, the pressure of the thermosensitive liquid in the sealing bladder 24 increases and is forced into the capillary tube 25 until it pushes the piston rod into the piston cylinder.

[0044] Furthermore, the initial closed state is as follows: Figure 7 As shown, the motor body 10 has multiple sealing bladders 24 inside to better sense the operating temperature of the motor body 10. It is understandable that if the motor runs for a short time, the temperature rise is low, and even if the drive mechanism only slightly opens the sealing mechanism, the impact is minimal. When the motor runs for a long time, the temperature is higher, but the heated sealing bladders 24 push the piston rod out to its maximum extension, i.e., rotate sixty degrees to... Figure 6 As shown, airflow is allowed to enter at this time.

[0045] Working principle:

[0046] The temperature inside the motor body 10 rises, and the thermosensitive liquid inside the sealed bag 24 expands due to heat. It enters the piston cylinder of the piston mechanism 23 through the capillary tube 25, pushing the piston rod and rack rod 22 to slide horizontally. The rack rod 22 drives the outer gear ring 21 that meshes with it to rotate. Power is transmitted through the gear 20, causing all the baffles 13 and the rotating disk 16 to rotate 60 degrees, opening the storage channel. At this time, the adjacent baffles 13 form a labyrinth structure, which maintains air circulation and is dustproof and waterproof. Water flows along the inclined part 131 to the drainage trough and is discharged.

[0047] At the same time, the rotating disk 16 rotates with the outer toothed ring 21, causing the guide groove 161 to force the slide plate to slide along the sliding channel 151, which drives the moisture-absorbing plate 14 to move synchronously in a centripetal or centrifugal motion. When it is open, it contracts without obstruction, and when it is closed, it opens and squeezes the flexible water-absorbing material on the moisture-absorbing plate 14 to squeeze out the water. After resetting, it continues to absorb moisture.

Claims

1. An integrated dustproof and waterproof cover for a motor encoder, comprising a motor body (10) and a fixing frame (11) vertically fixed to the outer side wall of the top of the motor body (10), wherein the length direction of the fixing frame (11) is consistent with the width direction of the motor body (10), and a storage channel is provided through the top of the motor body (10) at a position corresponding to the fixing frame (11), characterized in that: A horizontal filter screen (12) is detachably connected to the opening at one end of the fixed frame (11) away from the motor body (10). A sealing mechanism is provided inside the fixed frame (11), and the sealing mechanism includes: Multiple moisture-absorbing rollers are linearly and equally spaced on the inner sidewall of the fixed frame (11) along the length direction of the fixed frame (11). The axial direction of the moisture-absorbing rollers is consistent with the width direction of the fixed frame (11). The moisture-absorbing rollers include multiple moisture-absorbing plates (14) arranged in a ring array and abutting each other. Six baffles (13) arranged in a ring array about their axial direction are provided on the outside of the moisture-absorbing rollers. The baffles (13) arranged crosswise on the outside of two adjacent moisture-absorbing rollers overlap. The baffle (13) and the moisture-absorbing plate (14) are provided with the same driving mechanism on the same side along their own axial direction. The cross section of the baffle (13) along its radial direction is "Y" shaped and the three ends extending from the outer arc wall are of the same length. The same inclined part (131) is provided on the outer side wall of the baffle (13) between the two extensions. The inclined part (131) is inclined towards the end of the baffle (13) away from the driving mechanism. The fixed frame (11) is provided with a drainage groove on the side wall corresponding to this side. The drainage groove passes through the fixed frame (11) to the outside.

2. The integrated dustproof and waterproof cover for a motor encoder as described in claim 1, characterized in that: The inner side wall of the fixed frame (11) is provided with a storage groove at the end of the absorbent roller away from the drainage groove. The driving mechanism includes a limiting plate (15) fixed to the end of the inner arc wall of the storage groove near the absorbent plate (14). The outer edge of the side wall of the limiting plate (15) near the absorbent plate (14) is provided with a plurality of sliding channels (151) arranged in a ring array about its axial direction. The length direction of the sliding channel (151) is consistent with the radial direction of the limiting plate (15) and the sliding channel (151) is arranged to pass through the limiting plate (15) axially.

3. The integrated dustproof and waterproof cover for a motor encoder as described in claim 2, characterized in that: The limiting disk (15) is coaxially provided with a rotating disk (16) on the side away from the moisture-absorbing plate (14). The rotating disk (16) has multiple guide grooves (161) arranged in a ring array about its axis on the side wall near the limiting disk (15). One end of the guide groove (161) is set towards the axis of the rotating disk (16), and the other end is bent towards the outer edge of the rotating disk (16). The multiple guide grooves (161) correspond one-to-one with the multiple sliding channels (151).

4. The integrated dustproof and waterproof cover for a motor encoder as described in claim 3, characterized in that: The guide groove (161) is equipped with a sliding plate, and the end of the sliding plate away from the rotating disk (16) slides through the sliding channel (151) and is fixed on the moisture-absorbing plate (14).

5. The integrated dustproof and waterproof cover for a motor encoder as described in claim 3, characterized in that: An external gear ring (21) is coaxially fixed on the outer edge of the side wall away from the limiting disk (15) of the rotating disk (16). A gear (20) is coaxially fixed on the end of the baffle (13) close to the rotating disk (16). The gear (20) meshes with the external gear ring (21). The same gear (20) meshes with the side of two adjacent external gear rings (21) that are close to each other.

6. The integrated dustproof and waterproof cover for a motor encoder as described in claim 5, characterized in that: The axial length of the external toothed ring (21) located at one end is greater than the axial length of the gear (20) it meshes with. The bottom of the external toothed ring (21) is meshed with a horizontal rack (22), which slides horizontally on the inner wall of the bottom of the storage slot.

7. The integrated dustproof and waterproof cover for a motor encoder as described in claim 6, characterized in that: A horizontal piston mechanism (23) is fixed at one end of the rack (22) away from the center of the fixed frame (11) along its length direction. A capillary tube (25) is fixed at one end of the piston mechanism (23) away from the rack (22). The capillary tube (25) is installed through the piston mechanism (23) and fixed to the inner wall of the motor body (10) with a sealing bladder (24).

8. The integrated dustproof and waterproof cover for a motor encoder as described in claim 1, characterized in that: The outer arc wall of the moisture-absorbing plate (14) is covered with a flexible water-absorbing material, and the outer surface of the baffle (13) and the inclined part (131) is covered with a waterproof material.

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