Micro motor with waterproof performance

Abstract

The utility model relates to the technical field of waterproof motors, and discloses a waterproof micro motor, which comprises a motor casing, a second motor casing is in frictional contact with a connecting end on one side of the motor casing, a sealing groove is formed in the outer wall of one side, close to the motor casing, of the second motor casing, and a sealing rubber ring is fixedly connected to the outer wall of one side, close to the second motor casing, of the motor casing. The sealing rubber ring is in frictional contact with the sealing groove, four sets of clamping strips are fixedly connected to the outer side wall, close to the second motor shell, of the motor shell, and four sets of second clamping strips are fixedly connected to the outer side wall, close to the motor shell, of the second motor shell. Effective sealing of the joint between the motor shell and the second motor shell is achieved, moisture permeation is preliminarily prevented, meanwhile, the design of the waterproof sleeve provides first waterproof protection for the rotor rotating shaft, the design of the waterproof round cover further enhances the waterproof performance of the rotating shaft, double waterproof barriers are formed, and the motor shell is more practical.

Description

TECHNICAL FIELD

[0001] The utility model relates to waterproof motor technical field, concretely is a miniature motor with waterproof performance. BACKGROUND

[0002] As an indispensable power source in modern electronic devices, miniature motors play an important role in many fields due to their small size, high energy conversion rate, and wide applicability. Whether it is household appliances, automotive electronics, or industrial automation, aerospace, miniature motors are indispensable key components. However, in specific working environments such as humid, dusty, or underwater environments, the waterproof performance of miniature motors becomes an important indicator of their quality. Once water seeps into the motor, it not only causes circuit short circuits and component corrosion, but also may cause safety accidents, seriously affecting the normal operation and service life of the equipment. Therefore, developing miniature motors with excellent waterproof performance is of great significance to ensure the stable operation of equipment, prolong the service life, and improve safety. Traditional miniature motors often use simple sealing structures or apply waterproof coatings to improve waterproof performance. However, these traditional techniques have obvious shortcomings. On the one hand, simple sealing structures cannot completely block the penetration of water, especially at the tiny gap between the motor output shaft and the shell, water may still penetrate into the motor through the gap. On the other hand, although applying waterproof coatings can improve the waterproof level of the motor to some extent, the coatings are prone to aging and falling off, and the waterproof performance will decrease significantly after a long period of use. These shortcomings not only affect the waterproof effect of the motor, but also may cause frequent failures of the motor in humid environments, increasing maintenance costs and downtime, and seriously restricting the application and development of miniature motors in specific fields. Therefore, there is an urgent need for a miniature motor with more reliable waterproof performance to overcome the shortcomings of traditional technology.

[0003] As disclosed in Chinese patent CN209402337U, a miniature motor is provided, which is fixedly connected by screws at the bottom of the cover and the shell, and a sealing structure is arranged around the motor body, effectively improving the waterproof performance of the motor. However, when using the above-mentioned patent, although it can prevent water from directly penetrating from the outside of the motor body, the waterproof effect is not ideal for water penetrating into the device through the heat dissipation holes and gaps. In addition, while improving the waterproof performance, the patent also increases the complexity and manufacturing cost of the motor. Therefore, we propose a miniature motor with waterproof performance. UTILITY MODEL CONTENT

[0004] (I) Technical problems solved

[0005] In view of the shortcomings of the prior art, the utility model provides a miniature motor with waterproof performance, which solves the above-mentioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: A miniature motor with waterproof performance, including motor shell, the one side of motor shell connects end friction contact has second motor shell, the one side outer wall of second motor shell is close to motor shell and is equipped with sealing groove, the one side outer wall of motor shell is close to second motor shell and is fixedly connected with sealing rubber ring, sealing rubber ring and sealing groove are friction contact, the outer wall of motor shell is close to the fixedly connected with four groups of clamping strips of second motor shell, the outer wall of second motor shell is close to the fixedly connected with four groups of second clamping strips of motor shell, clamping strip and second clamping strip are parallel, and the one side outer wall of clamping strip and second clamping strip is friction contact.

[0008] Preferably, when the clamping strip and the second clamping strip are in contact, the cross section is T-shaped, a fixing member is matched with the one side outer wall of the clamping strip and the second clamping strip in a tenon-and-mortise manner, and a fixing hole is formed in the bottom of the one side outer wall of the second motor shell.

[0009] Preferably, the outer wall of the second motor shell is provided with equidistantly distributed positioning holes, the fixing hole is in frictional contact with the top of the positioning hole, and the fixing hole and the positioning hole are parallel to each other.

[0010] Preferably, the outer wall of the motor shell away from the second motor shell is fixedly connected with a waterproof sleeve, the inner wall of the second motor shell is movably connected with a rotor, the rotor is movably connected to the inner wall of the motor shell on the side away from the second motor shell, and the rotor rotation shaft penetrates the outer wall of the waterproof sleeve on one side.

[0011] Preferably, the outer wall of the rotor rotation shaft on one end is fixedly connected with a waterproof round cover, and the waterproof round cover is located on the inner wall of the waterproof sleeve on one side.

[0012] Preferably, the output direction of the waterproof round cover is the extension direction of the rotor rotation shaft, and the inner wall of the waterproof sleeve extends in the direction opposite to the inner wall of the waterproof round cover and the rotor rotation shaft.

[0013] Preferably, the sealing rubber ring is made of silicone rubber material, and the Shore hardness thereof is 40-60A.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the utility model provides a miniature motor with waterproof performance, which has the following beneficial effects:

[0016] 1. The waterproof miniature motor adopts the friction contact design of the sealing rubber ring and the sealing groove at the connection of the motor shell and the second motor shell, forming an effective preliminary waterproof barrier. In addition, a waterproof sleeve and a waterproof round cover are specially designed to provide double waterproof protection for the rotating shaft of the rotor. This multiple waterproof design greatly improves the waterproof performance of the motor, so that the motor can work stably in humid or underwater environment, while the traditional motor is easily damaged due to insufficient waterproof measures.

[0017] 2. The waterproof miniature motor adopts the friction contact of the clamping strip and the second clamping strip, and the mortise joint of the fixing part, so that the connection between the motor shell and the second motor shell is more stable. This design not only improves the overall firmness of the motor, but also enhances its vibration resistance and impact resistance, so that the motor can maintain a stable operating state in harsh working conditions.

[0018] 3. The waterproof miniature motor, in view of the contrast file CN209402337U, the motor in the contrast file mainly relies on the sealing structure outside the shell in waterproof treatment, and the waterproof measures for the internal part of the motor are relatively weak. The present application file is designed from all aspects and multiple levels, which not only strengthens the waterproof performance of the motor outside, but also effectively blocks the possible small gaps and potential cracks in the internal part of the motor. This design is more comprehensive and detailed than the single sealing structure in the contrast file. The internal elements of the motor in the contrast file may be damaged due to water penetration after long time use in humid environment. The device effectively prevents the erosion of water to the internal elements of the motor through comprehensive waterproof design, which obviously and substantially improves the overall waterproof performance and stability of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a sectional view of the structure of the utility model;

[0020] Fig. 2 It is an exploded view of the structure of the utility model;

[0021] Fig. 3 It is a schematic view of the utility model.

[0022] In the figure: 1, motor shell; 2, second motor shell; 3, sealing groove; 4, sealing rubber ring; 5, clamping strip; 6, second clamping strip; 7, fixing part; 8, fixing hole; 9, positioning hole; 10, waterproof sleeve; 11, rotor; 12, waterproof round cover. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0024] Please refer to Figs. 1-3 A waterproof micro motor, comprising a motor shell 1, a second motor shell 2 is frictionally connected to one side of the motor shell 1, a sealing groove 3 is formed in the outer wall of the second motor shell 2 close to the motor shell 1, a sealing rubber ring 4 is fixedly connected to the outer wall of the motor shell 1 close to the second motor shell 2, and the sealing rubber ring 4 is in frictional contact with the sealing groove 3, which effectively seals the connection between the motor shell 1 and the second motor shell 2 and preliminarily prevents water from penetrating, four clamping strips 5 are fixedly connected to the outer wall of the motor shell 1 close to the second motor shell 2, four second clamping strips 6 are fixedly connected to the outer wall of the second motor shell 2 close to the motor shell 1, the clamping strips 5 are parallel to the second clamping strips 6, and the outer walls of the clamping strips 5 and the second clamping strips 6 are in frictional contact, thereby enhancing the connection stability between the motor shell 1 and the second motor shell 2.

[0025] Further, when the clamping strips 5 and the second clamping strips 6 are in contact, the cross section is T-shaped, a fixing member 7 is in tenon joint with one side of the outer wall of the clamping strips 5 and the second clamping strips 6, a fixing hole 8 is formed in the bottom of the outer wall of the second motor shell 2 close to the fixing member 7, the T-shaped cross section and the tenon joint of the fixing member 7 further lock the relative positions of the clamping strips 5 and the second clamping strips 6, and the connection firmness is improved.

[0026] Further, equidistantly distributed positioning holes 9 are formed in the outer wall of the second motor shell 2, the fixing hole 8 is in frictional contact with the top of the positioning hole 9, and the fixing hole 8 and the positioning hole 9 are parallel to each other, which enables the fixing member 7 to be more stably fixed on the second motor shell 2 and further enhances the stability of the motor structure.

[0027] Further, a waterproof sleeve 10 is fixedly connected to the outer wall of the motor shell 1 away from the second motor shell 2, a rotor 11 is movably connected to one side of the inner wall of the second motor shell 2, the rotating shaft of the rotor 11 is movably connected to one side of the inner wall of the motor shell 1 away from the second motor shell 2, and the rotating shaft of the rotor 11 penetrates through one side of the outer wall of the waterproof sleeve 10, which provides waterproof protection for the rotating shaft of the rotor 11 and prevents water from penetrating into the motor from the rotating shaft.

[0028] Further, the outer wall of one end of the rotating shaft of the rotor 11 is fixedly connected with a waterproof round cover 12, the waterproof round cover 12 is located on one side of the inner wall of the waterproof sleeve 10, and the waterproof round cover 12 further enhances the waterproof performance of the rotating shaft and forms a double waterproof barrier for the rotating shaft.

[0029] Further, the output direction of the waterproof round cover 12 is the extension direction of the rotating shaft of the rotor 11, and the inner side wall of the waterproof sleeve 10 extends in the direction opposite to the rotating shaft of the rotor 11 along the inner wall of the waterproof round cover 12. This design is conducive to guiding the possible seepage water to flow out, and further improves the waterproof reliability of the motor.

[0030] Further, the sealing rubber ring 4 is made of silicone rubber material, and the Shore hardness thereof is 40-60A. The silicone rubber material has good elasticity and water resistance, so that the sealing rubber ring 4 can not only adapt to the shape of the sealing groove 3, but also ensure the reliability and durability of the sealing.

[0031] Structure description: 1, motor shell 1: provides main structure support for the micro motor, and is connected with the second motor shell 2 to form a sealed shell; one side of the connecting end is in frictional contact with the second motor shell 2, a sealing rubber ring 4 and a clamping strip 5 are fixedly connected to the outer wall close to the second motor shell 2, and a waterproof sleeve 10 is fixedly connected to the outer wall away from the second motor shell 2.

[0032] 2, second motor shell 2: connected with the motor shell 1, together constituting the sealed shell of the motor, protecting the internal parts; the outer wall close to the motor shell 1 is provided with a sealing groove 3, which cooperates with the sealing rubber ring 4 on the motor shell 1 to form a seal, and the outer wall is fixedly connected with a second clamping strip 6 and a positioning hole 9.

[0033] 3, sealing groove 3: cooperates with the sealing rubber ring 4 to form the sealing structure between the motor shell 1 and the second motor shell 2; is provided on the outer wall of the second motor shell 2 close to the motor shell 1.

[0034] 4, sealing rubber ring 4: provides sealing effect to prevent water from penetrating; is fixedly connected to the outer wall of the motor shell 1 close to the second motor shell 2, and is in frictional contact with the sealing groove 3 on the second motor shell 2.

[0035] 5, clamping strip 5: enhances the connection stability between the motor shell 1 and the second motor shell 2; is fixedly connected to the outer wall of the motor shell 1 close to the second motor shell 2, and is in parallel and frictional contact with the second clamping strip 6 on the second motor shell 2.

[0036] 6, second clamping strip 6: cooperates with the clamping strip 5 to enhance the connection stability between the motor shell 1 and the second motor shell 2; is fixedly connected to the outer wall of the second motor shell 2 close to the motor shell 1.

[0037] 7, the fixed part 7: further lock the relative position of the clamping strip 5 and the second clamping strip 6, improve the firmness of the connection; mortise fit in the clamping strip 5 and the second clamping strip 6 one side outer wall, close to the second motor shell 2 one side outer wall bottom is provided with fixed hole 8.

[0038] 8, the positioning hole 9: make the fixed part 7 can be more stable fixed on the second motor shell 2; set up in the second motor shell 2 outer side wall, with the fixed hole 8 of fixed part 7 upper and lower parallel and friction contact.

[0039] 9, waterproof sleeve 10: provide waterproof protection for the rotating shaft of rotor 11; fixedly connected in the motor shell 1 away from the second motor shell 2 one side outer wall, the rotating shaft of rotor 11 penetrates one side outer wall.

[0040] 10, rotor 11: as the rotating part of motor, generate power; its one side activity connection in the second motor shell 2 inner wall, away from the second motor shell 2 one side rotating shaft activity connection in the motor shell 1 inner wall, and penetrate in waterproof sleeve 10.

[0041] 11, waterproof round cover 12: further enhance the waterproof performance of the rotating shaft, form double waterproof barrier; fixedly connected in the rotating shaft of rotor 11 one end outer wall, located in the waterproof sleeve 10 inner wall one side.

[0042] Working principle: through the friction contact design of the motor shell 1 and the second motor shell 2, the preliminary connection effect between the two is achieved. The sealing rubber ring 4 fixedly connected to the outer wall of the motor shell 1 forms friction contact with the sealing groove 3 opened on the second motor shell 2, which effectively seals the gap between the two and prevents moisture penetration. The sealing rubber ring 4 is made of silicone rubber material, and its Shore hardness is 40-60A, which not only ensures sufficient softness to adapt to the shape of the sealing groove 3, but also ensures the reliability and durability of the sealing. Further, through the parallel design of the clamping strip 5 and the second clamping strip 6 and the friction contact between them, the connection stability between the motor shell 1 and the second motor shell 2 is enhanced. When the clamping strip 5 and the second clamping strip 6 are in contact, the cross section presents T shape, which is beneficial to increase the contact area and improve the firmness of the connection. At the same time, the tenon joint of the fixing part 7 and the friction contact between the fixing hole 8 and the positioning hole 9 further lock the relative position of the motor shell 1 and the second motor shell 2, ensuring the stability and waterproof performance of the entire motor structure. In addition, through the fixed connection of the waterproof sleeve 10 and the design that the rotor 11 rotating shaft penetrates the waterproof sleeve 10, the waterproof protection effect of the rotating shaft is achieved. The fixed connection of the waterproof round cover 12 and its cooperation with the inner wall of the waterproof sleeve 10 form a double waterproof barrier for the output end of the rotating shaft. The output direction of the waterproof round cover 12 is consistent with the extension direction of the rotor 11 rotating shaft, while the output direction of the inner wall of the waterproof sleeve 10 extends in the opposite direction of the inner wall of the waterproof round cover 12 and the rotor 11 rotating shaft. This design is beneficial to guide the possible infiltrated water out, further improving the waterproof performance of the motor.

[0043] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A micro motor with waterproof performance, comprising a motor shell (1), characterized in that: The motor shell (1) one side connection end friction contact has the second motor shell (2), the second motor shell (2) is close to the sealing groove (3) that is set up in the outer wall of motor shell (1) one side, the motor shell (1) is close to the sealing rubber ring (4) that is fixedly connected with the outer wall of second motor shell (2) one side, the sealing rubber ring (4) and sealing groove (3) are friction contact, the motor shell (1) is close to the outer side wall of second motor shell (2) and is fixedly connected with four groups of clamping strips (5), the second motor shell (2) is close to the outer side wall of motor shell (1) and is fixedly connected with four groups of second clamping strips (6), the clamping strip (5) and second clamping strip (6) are parallel, the clamping strip (5) and second clamping strip (6) one side outer wall are friction contact.

2. The micro motor with waterproof performance according to claim 1, characterized in that: When the clamping strip (5) and second clamping strip (6) contact, the cross section is T-shaped, the clamping strip (5) and second clamping strip (6) one side outer wall tenon joint cooperation has the fixing piece (7), the fixing hole (8) is set up in the fixing piece (7) close to the outer wall bottom of second motor shell (2) one side.

3. The micro motor with waterproof performance according to claim 2, characterized in that: The outer side wall of second motor shell (2) is provided with equidistantly distributed positioning holes (9), the top of fixing hole (8) and positioning hole (9) is friction contact, the fixing hole (8) and positioning hole (9) are parallel.

4. The micro motor with waterproof performance according to claim 1, characterized in that: The waterproof sleeve (10) is fixedly connected to the outer wall of the motor shell (1) away from the second motor shell (2), the rotor (11) is movably connected to the inner wall of the second motor shell (2), the rotor (11) is movably connected to the inner wall of the motor shell (1) away from the second motor shell (2) on the rotating shaft, and the rotating shaft of the rotor (11) penetrates the outer wall of the waterproof sleeve (10) on one side.

5. The micro motor with waterproof performance according to claim 4, characterized in that: The waterproof round cover (12) is fixedly connected to the outer wall of the rotating shaft of the rotor (11) on one end, and the waterproof round cover (12) is located on the inner wall of the waterproof sleeve (10) on one side.

6. The micro motor with waterproof performance according to claim 5, characterized in that: The output direction of the waterproof round cover (12) is the extension direction of the rotating shaft of the rotor (11), and the output direction of the inner wall of the waterproof sleeve (10) extends in the opposite direction of the inner wall of the waterproof round cover (12) and the rotating shaft of the rotor (11).

7. The micro motor with waterproof performance according to claim 1, characterized in that: The sealing rubber ring (4) is made of silicone rubber material, and its Shore hardness is 40-60A.

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