Dustproof mechanism of linear motor

Abstract

The utility model discloses a dustproof mechanism of a linear motor, which relates to the field of linear motors and comprises a linear motor stator, a linear motor rotor is arranged on the linear motor stator, and a sealing frame is arranged on one side of the linear motor rotor. According to the utility model, through the arrangement of the sealing assembly, when a gap between the Hall sensor and the sealing frame and a gap between the power outgoing line and the sealing frame need to be sealed, a worker can rotate a locking bolt, unscrew the locking bolt from the sealing frame and then rotate a threaded column, so that a pressing plate moves downwards, the pressing plate extrudes an inflatable air bag, and the inflatable air bag is compressed under stress; when the Hall sensor is in use, air in the Hall sensor enters the air pipe and enters the first sealing air bag and the second sealing air bag, so that the first sealing air bag and the second sealing air bag are expanded, the first sealing air bag can be tightly attached to the power outgoing line after being expanded, and meanwhile the second sealing air bag can be tightly attached to the Hall sensor after being expanded. And the sealing performance between the Hall sensor and the sealing frame and between the power outgoing line and the sealing frame is improved.

Description

Technical Field

[0001] The utility model relates to the field of linear motors, in particular to a dust-proof mechanism for linear motors. Background Art

[0002] A linear motor, also known as a linear motor, is, as the name suggests, a motor that can produce linear motion. A linear motor converts electrical energy into mechanical energy for linear motion and does not require any intermediate transmission conversion device. Therefore, it is more efficient than the linear motion formed by a rotary motor through a conversion device. A dustproof mechanism is generally provided on the linear motor so that the linear motor can play a dustproof role.

[0003] According to the Chinese patent with publication number CN217883189U, a moving coil linear motor is disclosed. The utility model has good protection effect, improves the operation ability of the linear motor, has good sealing and dustproof effect, effectively improves the service life of the linear motor, and is suitable for the operation of the moving coil linear motor.

[0004] Regarding the above-mentioned disclosed patent content, a sealing frame is provided with two openings on the sealing frame so that the Hall sensor and the power output line pass through the two openings respectively. However, after the Hall sensor and the power output line pass through the openings, there may be a gap between the Hall sensor and the power output line and the opening, causing external moisture or dust to enter the linear motor through the gap, thereby causing the electronic components in the linear motor to become damp or a large amount of dust to accumulate on the surface, which may cause damage to the electronic components over a long period of time, thereby reducing the service life of the linear motor and reducing the dust and moisture-proof effect of the dust-proof mechanism. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a dustproof mechanism for a linear motor to solve the technical problem that external moisture or dust may enter the interior of the linear motor through the gap between the Hall sensor and the power output line and the opening.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a linear motor dust prevention mechanism, comprising a linear motor stator, a linear motor mover is arranged on the linear motor stator, and a sealing frame is arranged on one side of the linear motor mover, a sealing plate is arranged in the sealing frame, a frame body and a sleeve body are respectively arranged on one side of the sealing plate, a sealing assembly is arranged inside the sealing frame, and the sealing assembly comprises a second sealing airbag arranged inside the frame body, a first sealing airbag arranged inside the sleeve body and a cavity opened at the top of the sealing frame, an inflatable airbag is arranged inside the cavity, a pressure plate is connected to the top of the inflatable airbag, and air pipes are respectively connected between the inflatable airbag and the first sealing airbag and the second sealing airbag.

[0007] By adopting the above technical solution, when the inflatable airbag is squeezed, the air inside it will enter the airbag and enter the first sealed airbag and the second sealed airbag, so that the first sealed airbag and the second sealed airbag will expand.

[0008] Furthermore, two slide grooves are formed on the inner wall of the cavity, and sliders are provided inside the slide grooves, and both sliders are connected to the pressure plate.

[0009] By adopting the above technical solution, the slider and the slide groove can guide the pressing plate to prevent the pressing plate from rotating.

[0010] Furthermore, the interior of the cavity is connected with a threaded column via a bearing, the pressing plate is sleeved on the outer wall of the threaded column, and the threaded column is threadedly connected to the pressing plate.

[0011] By adopting the above technical solution, when the threaded column rotates, it will drive the pressure plate to move, and when the pressure plate moves downward, it will squeeze the inflatable airbag, so that the inflatable airbag is compressed.

[0012] Furthermore, a turntable is installed at the top of the threaded column, the inner thread of the threaded column is connected to a locking bolt extending to the inside of the sealing frame, and the top of the locking bolt extends to the outside of the turntable and is connected to a knob.

[0013] By adopting the above technical solution, when the threaded column needs to be limited to prevent it from rotating randomly, the staff can turn the locking bolt through the knob so that the locking bolt is screwed into the sealing frame, thereby achieving the purpose of limiting and fixing the threaded column.

[0014] Furthermore, a first opening is provided in the sealing plate and the inside of the sleeve, and a second opening is provided in the sealing plate and the inside of the frame.

[0015] By adopting the above technical solution, the setting of the first opening facilitates the plugging and connection of the power output line, while the setting of the second opening facilitates the plugging and connection of the Hall sensor.

[0016] Furthermore, a mounting plate is fixed on the top of the sealing frame, and two mounting bolts extending into the interior of the linear motor mover are provided on the mounting plate.

[0017] By adopting the above technical solution, the staff can screw the mounting bolts into the mounting plate and the linear motor mover, thereby completing the installation of the mounting plate and the sealing frame.

[0018] Furthermore, the pressing plate is slidably connected to the sliding groove via a sliding block.

[0019] By adopting the above technical solution, when the pressure plate moves, it will drive the slider to slide inside the slide groove, thereby improving the stability of the pressure plate when moving.

[0020] Furthermore, the first sealing airbag and the second sealing airbag are made of insulating rubber material.

[0021] By adopting the above technical solution, the first sealing airbag and the second sealing airbag can play an insulating role.

[0022] Furthermore, the thickness of the inflatable airbag is greater than the thickness of the first sealed airbag and the second sealed airbag.

[0023] By adopting the above technical solution, there is enough air inside the inflatable airbag to enter the first sealed airbag and the second sealed airbag through the air pipe.

[0024] In summary, the utility model mainly has the following beneficial effects:

[0025] The utility model is provided with a sealing component. When it is necessary to seal the gap between the Hall sensor and the power output line and the sealing frame, the staff can rotate the locking bolt to unscrew the locking bolt from the sealing frame, and then rotate the threaded column to move the pressure plate downward, and the pressure plate squeezes the inflatable airbag. The inflatable airbag is compressed, and the air inside it will enter the trachea and enter the first sealing airbag and the second sealing airbag, so that the first sealing airbag and the second sealing airbag are expanded. After the first sealing airbag is expanded, it can fit tightly with the power output line. At the same time, after the second sealing airbag is expanded, it can fit tightly with the Hall sensor, thereby improving the sealing between the Hall sensor and the power output line and the sealing frame, preventing dust or moisture from entering into the linear motor mover through the gap between the Hall sensor and the power output line and the sealing frame, thereby improving the dust and moisture proof effect of the dustproof mechanism, avoiding damage to the electronic components inside the linear motor due to moisture, and thereby reducing the service life of the linear motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the three-dimensional structure of the sealing frame of the utility model;

[0028] Figure 3 It is a schematic diagram of the side section structure of the sealing frame of the utility model;

[0029] Figure 4 It is a schematic diagram of a three-dimensional partial structure of the frame of the utility model;

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the inflatable airbag of the utility model;

[0031] Figure 6 For the utility model Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0032] In the figure: 1. stator of linear motor; 2. mover of linear motor; 3. sealing plate; 4. first opening; 5. second opening; 6. frame; 7. sleeve; 8. mounting bolt; 9. sealing assembly; 901. pressure plate; 902. inflatable airbag; 903. cavity; 904. slider; 905. slide groove; 906. air pipe; 907. first sealing airbag; 908. second sealing airbag; 909. threaded column; 910. turntable; 911. locking bolt; 10. sealing frame; 11. mounting plate. DETAILED DESCRIPTION

[0033] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0034] The following describes an embodiment of the utility model based on its overall structure.

[0035] Embodiment 1:

[0036] A dust-proof mechanism for a linear motor, such as Figure 1-Figure 6 As shown, it includes a linear motor stator 1, on which a linear motor mover 2 is provided, and a sealing frame 10 is provided on one side of the linear motor mover 2, a sealing plate 3 is provided in the sealing frame 10, and a frame body 6 and a sleeve body 7 are respectively provided on one side of the sealing plate 3, and a sealing assembly 9 is provided inside the sealing frame 10, a first opening 4 is provided inside the sealing plate 3 and inside the sleeve body 7, and a second opening 5 is provided inside the sealing plate 3 and inside the frame body 6, the first opening 4 is provided to facilitate the insertion and connection of the power output line, and the second opening 5 is provided to facilitate the insertion and connection of the Hall sensor, a mounting plate 11 is fixed to the top of the sealing frame 10, and two mounting bolts 8 extending to the inside of the linear motor mover 2 are provided on the mounting plate 11, when the sealing frame 10 needs to be installed on one side of the linear motor mover 2, the staff can clamp the sealing frame 10 on one side of the linear motor mover 2, and make the bottom of the mounting plate 11 fit with the top of the linear motor mover 2, and then screw the mounting bolts 8 into the mounting plate 11 and the linear motor mover 2, so as to complete the installation of the sealing frame 10.

[0037] Specifically, the sealing assembly 9 includes a second sealing airbag 908 arranged inside the frame 6, a first sealing airbag 907 arranged inside the sleeve 7 and a cavity 903 opened at the top of the sealing frame 10, an inflatable airbag 902 is arranged inside the cavity 903, and a pressure plate 901 is connected to the top of the inflatable airbag 902, and an air tube 906 is connected between the inflatable airbag 902 and the first sealing airbag 907 and the second sealing airbag 908 respectively. When the inflatable airbag 902 is squeezed, the air inside it will enter the air tube 906 and enter the first sealing airbag 907 and the second sealing airbag 908, so that the first sealing airbag 907 and the second sealing airbag 908 are expanded. The first sealing airbag 907 and the second sealing airbag 908 are made of insulating rubber material so that the first sealing airbag 907 and the second sealing airbag 908 can play an insulating role.

[0038] Specifically, the thickness of the inflatable airbag 902 is greater than the thickness of the first sealed airbag 907 and the second sealed airbag 908, so that there is enough air inside the inflatable airbag 902 to enter the first sealed airbag 907 and the second sealed airbag 908 through the trachea 906. The interior of the cavity 903 is connected to a threaded column 909 through a bearing, and a turntable 910 is installed on the top of the threaded column 909. The pressure plate 901 is sleeved on the outer wall of the threaded column 909, and the threaded column 909 is threadedly connected to the pressure plate 901. When the threaded column 909 rotates, it will drive the pressure plate 901 to move. When the pressure plate 901 moves down, it will squeeze the inflatable airbag 902, so that the inflatable airbag 902 is compressed.

[0039] Embodiment 2:

[0040] On the basis of the above-mentioned first embodiment, in order to improve the stability of the pressing plate 901 when it moves and prevent the pressing plate 901 from rotating, it is necessary to guide the pressing plate 901, so the following structure is set.

[0041] See also Figure 3-Figure 6 Two slide grooves 905 are also provided on the inner wall of the cavity 903, and a slider 904 is provided inside the slide groove 905. The two sliders 904 are connected to the pressure plate 901, and the pressure plate 901 is slidably connected to the slide groove 905 through the slider 904. The slider 904 and the slide groove 905 can guide the pressure plate 901 to prevent the pressure plate 901 from rotating, and when the pressure plate 901 moves, it will drive the slider 904 to slide inside the slide groove 905, thereby improving the stability of the pressure plate 901 when moving.

[0042] Embodiment three:

[0043] On the basis of the above-mentioned first embodiment, in order to prevent the threaded column 909 from rotating randomly, it is necessary to limit the threaded column 909, so the following structure is set.

[0044] See also Figure 3 , Figure 5 and Figure 5 The inner thread of the threaded column 909 is connected to a locking bolt 911 extending into the interior of the sealing frame 10. The top of the locking bolt 911 extends to the outside of the turntable 910 and is connected to a knob. When the threaded column 909 needs to be limited to prevent it from rotating at will, the staff can turn the locking bolt 911 through the knob so that the locking bolt 911 is screwed into the interior of the sealing frame 10, thereby achieving the purpose of limiting and fixing the threaded column 909.

[0045] The working principle of the utility model is as follows: first, the staff can install the sealing frame 10 on the linear motor mover 2 through the mounting bolts 8, and during the installation, the power outlet line is inserted through the first opening 4, and the Hall sensor is inserted through the second opening 5. After the installation, the staff can rotate the locking bolt 911, unscrew the locking bolt 911 from the sealing frame 10, and then rotate the threaded column 909 to move the pressure plate 901 downward, and the pressure plate 901 squeezes the inflatable airbag 902. The inflatable airbag 902 is compressed, and the air inside it enters the air pipe 906 and enters the first sealing The inside of the sealing airbag 907 and the second sealing airbag 908 makes the first sealing airbag 907 and the second sealing airbag 908 expand. After the first sealing airbag 907 expands, it can fit tightly with the power output line. At the same time, after the second sealing airbag 908 expands, it can fit tightly with the Hall sensor, thereby improving the sealing between the Hall sensor and the power output line and the sealing frame 10 to prevent dust from entering into the interior of the linear motor mover 2. Then, rotate the locking bolt 911 so that the locking bolt 911 is screwed into the interior of the sealing frame 10 to limit the threaded column 909.

[0046] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A dust prevention mechanism for a linear motor, comprising a linear motor stator (1), characterized in that: The linear motor stator (1) is provided with a linear motor mover (2), and a sealing frame (10) is provided on one side of the linear motor mover (2), a sealing plate (3) is provided inside the sealing frame (10), and a frame body (6) and a sleeve body (7) are provided on one side of the sealing plate (3), a sealing component (9) is provided inside the sealing frame (10), and the sealing component (9) comprises a second sealing airbag (908) provided inside the frame body (6), a first sealing airbag (907) provided inside the sleeve body (7), and a cavity (903) opened at the top of the sealing frame (10), an inflatable airbag (902) is provided inside the cavity (903), and a pressure plate (901) is connected to the top of the inflatable airbag (902), and an air pipe (906) is connected between the inflatable airbag (902) and the first sealing airbag (907) and the second sealing airbag (908), respectively.

2. A dust prevention mechanism for a linear motor according to claim 1, characterized in that: The inner wall of the cavity (903) is also provided with two slide grooves (905), and a slider (904) is arranged inside the slide groove (905), and the two sliders (904) are both connected to the pressing plate (901).

3. A dust prevention mechanism for a linear motor according to claim 1, characterized in that: The interior of the cavity (903) is connected to a threaded column (909) via a bearing, the pressing plate (901) is sleeved on the outer wall of the threaded column (909), and the threaded column (909) is threadedly connected to the pressing plate (901).

4. A dust prevention mechanism for a linear motor according to claim 3, characterized in that: A turntable (910) is installed at the top of the threaded column (909), and the inner thread of the threaded column (909) is connected to a locking bolt (911) extending to the inside of the sealing frame (10), and the top of the locking bolt (911) extends to the outside of the turntable (910) and is connected to a knob.

5. A linear motor dust prevention mechanism according to claim 1, characterized in that: The sealing plate (3) and the casing (7) are both provided with a first opening (4), and the sealing plate (3) and the casing (6) are both provided with a second opening (5).

6. A dust prevention mechanism for a linear motor according to claim 1, characterized in that: A mounting plate (11) is fixed to the top of the sealing frame (10), and the mounting plate (11) is provided with two mounting bolts (8) extending into the interior of the linear motor mover (2).

7. A linear motor dust prevention mechanism according to claim 2, characterized in that: The pressing plate (901) is slidably connected to the sliding groove (905) via a sliding block (904).

8. A dust prevention mechanism for a linear motor according to claim 1, characterized in that: The first sealing airbag (907) and the second sealing airbag (908) are made of insulating rubber material.

9. A linear motor dust prevention mechanism according to claim 1, characterized in that: The thickness of the inflatable airbag (902) is greater than the thickness of the first sealed airbag (907) and the second sealed airbag (908).

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