Waterproof structure of linear motor

Abstract

The utility model discloses a waterproof structure of a linear motor, which relates to the technical field of motor waterproofing and comprises a linear motor body, a movable shaft is connected to the output end of the linear motor body, and a mounting frame is fixedly connected to the front end of the linear motor body and located on the outer side of the movable shaft. A mounting seat is fixedly connected to the bottom of the linear motor body, a waterproof mechanism is movably connected to the front side wall of the mounting frame and located on the outer side of the movable shaft through bolts, the waterproof mechanism comprises a connecting disc, a fixed sealing frame, a front baffle, a plurality of telescopic movable frames and a sealing bag, and the fixed sealing frame is fixedly connected to the front side wall of the connecting disc. According to the utility model, the interior of the motor is subjected to anti-seepage treatment through the rigid waterproof mechanism, so that external gas can be effectively prevented from invading, and water formed after condensation exchanges heat with the internal gas of the motor, thereby prolonging the service life of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of motor waterproofing, in particular to a linear motor waterproofing structure. Background Art

[0002] A linear motor is a servo drive element that can directly convert electrical energy into linear motion. Its working principle is similar to that of a rotary motor, except that it converts rotary motion into linear rotary motion. The internal windings of the linear motor's mover will generate heat when working, causing the internal air pressure to rise. When the mover rotates, the internal air pressure will change, causing gas to infiltrate. This phenomenon is caused by the expansion of the gas due to the heat inside the mover and the airflow generated when the mover rotates. In order to prevent this part of the gas from condensing into water after infiltration and damaging the internal components of the motor, a waterproof rubber sleeve is usually placed on the outside of the active end of the motor.

[0003] However, although the waterproof rubber sleeve can seal the internal space of the motor well, it will not only hinder heat dissipation and cause the motor temperature to rise, affecting performance and life, and reduce mechanical flexibility, but the rubber sleeve may also age and deform over time, affecting the protection performance. During the process of rotation and extension of the motor, the rubber sleeve will continuously cause the deformation of the rubber sleeve, resulting in difficulty in ensuring the service life of the rubber sleeve. Based on the above viewpoints, technical personnel in this field have proposed a linear motor waterproof structure to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a linear motor waterproof structure is proposed. The linear motor waterproof structure designed uses a rigid waterproof mechanism to perform anti-seepage treatment on the inside of the motor, which can not only effectively block the intrusion of external gas, but also exchange heat with the internal gas of the motor through the water formed after condensation, thereby improving the service life of the motor.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a linear motor waterproof structure, comprising a linear motor body, a movable shaft connected to the output end of the linear motor body, a mounting frame fixedly connected to the front end of the linear motor body and located outside the movable shaft, a mounting seat fixedly connected to the bottom of the linear motor body, and a waterproof mechanism movably connected to the front side wall of the mounting frame and located outside the movable shaft through bolts;

[0006] The waterproof mechanism includes a connecting plate, a fixed sealing frame, a front baffle, a plurality of telescopic movable frames and a sealing bag, the fixed sealing frame is fixedly connected to the front side wall of the connecting plate, the front baffle is movably connected to the outer side wall of the fixed sealing frame by bolts, the plurality of telescopic movable frames are limitedly slidably connected, and the rearmost telescopic movable frame is limitedly slidably connected to the inner side wall of the fixed sealing frame, and the sealing bag is connected to the rear side of the inner side wall of the fixed sealing frame.

[0007] Through the above technical scheme, the device realizes the waterproof function through the waterproof mechanism. When the linear motor body drives the movable shaft to rotate and extend, several telescopic movable frames slide out synchronously. When the telescopic movable frames slide out, the volume inside the telescopic movable frames increases and the pressure decreases, which drives the sealing bag to bulge, effectively blocking the gas from entering the thread gap inside the linear motor body due to pressure changes, and further preventing the gas from penetrating due to the pressure difference between the inside and outside of the linear motor body, causing the gas to condense into water and damage the components inside the linear motor body.

[0008] Furthermore, a mounting notch is provided at the front end of the outer side wall of the movable shaft, and a load end connection threaded opening is provided at the center of the front side wall of the movable shaft;

[0009] Through the above technical solution, the installation notch is used to install the waterproof mechanism, and the load end connecting threaded port is used to connect the load end.

[0010] Furthermore, a connecting protrusion is provided on the inner side wall of the telescopic movable frame, and the connecting protrusion is rotatably connected in the movable shaft;

[0011] Through the above technical solution, the connection between the movable shaft and the linear motor body is achieved through the movable shaft and the connecting protrusion, and the sealing performance thereof is fully guaranteed.

[0012] Furthermore, a plurality of heat dissipation fins arranged in a circumferential pattern are fixedly installed inside the fixed sealing frame, an air inlet is provided at the top of the fixed sealing frame, and a plurality of circulation grooves are provided on each of the heat dissipation fins;

[0013] Through the above technical solution, when the movable shaft is driven inward by the linear motor body, the gas enters the fixed sealing frame from the air inlet, and then the gas condenses into small liquids when passing through multiple heat dissipation fins, and flows into the bottom of the fixed sealing frame through the circulation groove.

[0014] Furthermore, a flow storage tank is fixedly connected to the bottom of the fixed sealing frame, and a collecting bottle is detachably connected to the bottom of the flow storage tank;

[0015] Through the above technical solution, the water flowing into the fixed sealing frame is recovered into the collection bottle through the storage tank.

[0016] Furthermore, a connecting bent rod is fixedly connected to the lower side wall of the telescopic movable frame at the front side, and a piston push plate is fixedly connected to the other end of the connecting bent rod, and the piston push plate is tightly fitted with the inner wall of the flow storage tank;

[0017] Through the above technical solution, when the movable shaft is driven inward by the linear motor body, the volume of the waterproof mechanism is smaller, the air pressure increases, the sealing bag bulges inward, and at the same time, the telescopic movable frame drives the connecting curved rod to move toward the inside of the flow storage tank, squeezing the gas in the flow storage tank into the sealing bag, thereby exchanging heat with the gas in the waterproof mechanism, cooling the gas in the linear motor body, thereby avoiding overheating and damage to the linear motor body due to long-term operation.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, the interior of the motor is treated for seepage prevention through a rigid waterproof mechanism, which effectively blocks the entry of gas caused by pressure changes into the thread gap inside the linear motor body, and further prevents the gas from condensing into water due to the pressure difference between the inside and outside of the linear motor body, which damages the components inside the linear motor body.

[0020] 2. In the utility model, when the movable shaft is driven by the linear motor body to be retracted inward, the volume of the waterproof mechanism is smaller, the air pressure increases, the sealing bag bulges inward, and at the same time, the telescopic movable frame drives the connecting curved rod to move toward the inside of the flow storage tank, squeezing the gas in the flow storage tank into the sealing bag, thereby exchanging heat with the gas in the waterproof mechanism, cooling the gas in the linear motor body, thereby avoiding overheating and damage to the linear motor body due to long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall diagram of a waterproof structure of a linear motor proposed by the utility model;

[0022] Figure 2 This is an axonometric diagram of a waterproof structure of a linear motor proposed in the utility model;

[0023] Figure 3 A top view of a waterproof mechanism in a waterproof structure of a linear motor proposed by the utility model;

[0024] Figure 4 for Figure 3 Isometric section view along AA.

[0025] Legend:

[0026] 1. Linear motor body; 2. Mounting seat; 3. Mounting frame; 4. Movable shaft; 5. Waterproof mechanism; 6. Mounting notch; 7. Load end connection threaded port;

[0027] 51. Connecting plate; 52. Fixed sealing frame; 53. Front baffle; 54. Telescopic movable frame; 55. Connecting protrusion; 56. Air inlet; 57. Heat dissipation fin; 58. Circulation groove; 59. Connecting bent rod; 510. Piston push plate; 511. Flow storage groove; 512. Collection bottle; 513. Sealing capsule. DETAILED DESCRIPTION

[0028] 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.

[0029] Example:

[0030] Reference Figure 1-4 The utility model provides an embodiment of a linear motor waterproof structure, including a linear motor body 1, a movable shaft 4 is connected to the output end of the linear motor body 1, a mounting frame 3 is fixedly connected to the front end of the linear motor body 1 and located on the outside of the movable shaft 4, a mounting seat 2 is fixedly connected to the bottom of the linear motor body 1, and a waterproof mechanism 5 is movably connected to the front side wall of the mounting frame 3 and located on the outside of the movable shaft 4 through bolts. The waterproof mechanism 5 includes a connecting plate 51, a fixed sealing frame 52, a front baffle 53, a plurality of telescopic movable frames 54 and a sealing bag 513, the fixed sealing frame 52 is fixedly connected to the front side wall of the connecting plate 51, the front baffle 53 is movably connected to the outer side wall of the fixed sealing frame 52 through bolts, and a plurality of telescopic movable frames 54 are limited between The telescopic movable frame 54 is connected in a sliding manner, and the rearmost telescopic movable frame 54 is connected in a limited sliding manner to the inner wall of the fixed sealing frame 52, and the sealing bag 513 is connected to the inner wall of the fixed sealing frame 52 at the rear side. The device realizes the waterproof function through the waterproof mechanism 5. When the linear motor body 1 drives the movable shaft 4 to rotate and extend, several telescopic movable frames 54 slide out synchronously. When the telescopic movable frames 54 slide out, the volume inside the telescopic movable frames 54 increases and the pressure decreases, which drives the sealing bag 513 to bulge, effectively blocking the gas from entering the thread gap inside the linear motor body 1 due to pressure changes, and further preventing the gas from penetrating due to the pressure difference between the inside and outside of the linear motor body 1, which causes the gas to condense into water and damage the components inside the linear motor body 1.

[0031] An installation slot 6 is provided on the outer wall of the movable shaft 4 near the front end, and a load-end connecting threaded opening 7 is provided at the center of the front side wall of the movable shaft 4. The installation slot 6 is used to install the waterproof mechanism 5, and the load-end connecting threaded opening 7 is used to connect the load end. A connecting protrusion 55 is provided on the inner wall of the telescopic movable frame 54, and the connecting protrusion 55 is rotatably connected in the movable shaft 4. The movable shaft 4 is connected to the linear motor body 1 through the movable shaft 4 and the connecting protrusion 55, and its sealing performance is fully guaranteed.

[0032] A plurality of heat dissipation fins 57 arranged in a circular pattern are fixedly installed inside the fixed sealing frame 52. An air inlet 56 is provided at the top of the fixed sealing frame 52. A plurality of circulation grooves 58 are provided on each heat dissipation fin 57. When the movable shaft 4 is driven by the linear motor body 1 to be recovered inward, the gas enters the fixed sealing frame 52 from the air inlet 56. Subsequently, the gas condenses into small liquids when passing through a plurality of heat dissipation fins 57, and flows into the bottom of the fixed sealing frame 52 through the circulation grooves 58. A storage groove 511 is fixedly connected to the bottom of the fixed sealing frame 52. A collection bottle 512 is detachably connected to the bottom of the storage groove 511. Water flowing into the fixed sealing frame 52 is recovered into the collection bottle 512 through the storage groove 511.

[0033] A connecting bent rod 59 is fixedly connected to the lower side wall of the frontmost telescopic movable frame 54, and a piston push plate 510 is fixedly connected to the other end of the connecting bent rod 59. The piston push plate 510 fits tightly against the inner wall of the flow storage groove 511. When the movable shaft 4 is driven inward by the linear motor body 1 to be retracted, the volume in the waterproof mechanism 5 is smaller, the air pressure increases, and the sealing bag 513 bulges inward. At the same time, the telescopic movable frame 54 drives the connecting bent rod 59 to move toward the inside of the flow storage groove 511, squeezing the gas in the flow storage groove 511 into the sealing bag 513, thereby exchanging heat with the gas in the waterproof mechanism 5, cooling the gas in the linear motor body 1, thereby preventing the linear motor body 1 from being damaged by overheating due to long-term operation.

[0034] Working principle: The device realizes waterproof function through waterproof mechanism 5. When the linear motor body 1 drives the movable shaft 4 to rotate and extend, several telescopic movable frames 54 slide out synchronously. When the telescopic movable frames 54 slide out, the volume inside the telescopic movable frames 54 increases and the pressure decreases, which drives the sealing bag 513 to bulge, effectively blocking the gas from entering the thread gap inside the linear motor body 1 due to pressure changes, and further preventing the gas from condensing into water due to the pressure difference between the inside and outside of the linear motor body 1. Damage to the components inside the linear motor body 1. When the movable shaft 4 is driven by the linear motor body 1 to be recovered inward, the gas enters the fixed sealing frame 5 from the air inlet 56. 2, and then the gas condenses into a small liquid when passing through a plurality of heat dissipation fins 57, and flows into the bottom of the fixed sealing frame 52 through the circulation groove 58. The water flowing into the fixed sealing frame 52 is recovered into the collecting bottle 512 through the storage groove 511. The volume of the waterproof mechanism 5 is small, the air pressure increases, and the sealing bag 513 bulges inward. At the same time, the telescopic movable frame 54 drives the connecting curved rod 59 to move toward the inside of the storage groove 511, and squeezes the gas in the storage groove 511 into the sealing bag 513, so as to exchange heat with the gas in the waterproof mechanism 5, cool the gas in the linear motor body 1, and avoid the linear motor body 1 from being damaged by overheating due to long-term operation.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A linear motor waterproof structure, comprising a linear motor body (1), characterized in that: The output end of the linear motor body (1) is connected to a movable shaft (4); a mounting frame (3) is fixedly connected to the front end of the linear motor body (1) and located outside the movable shaft (4); a mounting seat (2) is fixedly connected to the bottom of the linear motor body (1); and a waterproof mechanism (5) is movably connected to the front side wall of the mounting frame (3) and located outside the movable shaft (4) through bolts; The waterproof mechanism (5) comprises a connecting plate (51), a fixed sealing frame (52), a front baffle (53), a plurality of telescopic movable frames (54) and a sealing bag (513); the fixed sealing frame (52) is fixedly connected to the front side wall of the connecting plate (51); the front baffle (53) is movably connected to the outer side wall of the fixed sealing frame (52) by bolts; the plurality of telescopic movable frames (54) are limitedly slidably connected to each other; the rearmost telescopic movable frame (54) is limitedly slidably connected to the inner side wall of the fixed sealing frame (52); and the sealing bag (513) is connected to the inner side wall of the fixed sealing frame (52) at a rearward position.

2. A linear motor waterproof structure according to claim 1, characterized in that: An installation notch (6) is provided on the outer side wall of the movable shaft (4) near the front end, and a load end connection threaded opening (7) is provided at the center of the front side wall of the movable shaft (4).

3. A linear motor waterproof structure according to claim 2, characterized in that: An engaging protrusion (55) is provided on the inner side wall of the telescopic movable frame (54), and the engaging protrusion (55) is rotatably connected in the movable shaft (4).

4. A linear motor waterproof structure according to claim 1, characterized in that: A plurality of heat dissipation fins (57) arranged in a circumferential pattern are fixedly mounted inside the fixed sealing frame (52), an air inlet (56) is provided at the top of the fixed sealing frame (52), and a plurality of circulation grooves (58) are provided on each of the heat dissipation fins (57).

5. The linear motor waterproof structure according to claim 1, characterized in that: A flow storage tank (511) is fixedly connected to the bottom of the fixed sealing frame (52), and a collecting bottle (512) is detachably connected below the flow storage tank (511).

6. A linear motor waterproof structure according to claim 5, characterized in that: A connecting bent rod (59) is fixedly connected to the lower side wall of the telescopic movable frame (54) at the frontmost side, and a piston push plate (510) is fixedly connected to the other end of the connecting bent rod (59), and the piston push plate (510) is tightly fitted with the inner wall of the flow storage tank (511).

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