Bell jar with dustproof structure

Abstract

The utility model discloses a bell jar with a dustproof structure, which comprises a bell jar main body, the top end of the bell jar main body is provided with an assembly connecting hole, the inner side of the assembly connecting hole is detachably provided with a plurality of sealing clamping plates, and the sealing clamping plates are fan-shaped and are distributed in a circular array around the circle of the assembly connecting hole. A clamping groove is formed in the outer side of the sealing clamping plate, the sealing clamping plate is clamped to the inner side of the assembly connecting hole through the clamping groove, a contact plate is installed on the inner side of the clamping groove, an adjusting spring is arranged between the inner side of the contact plate and the sealing clamping plate, and the two ends of the adjusting spring are fixedly connected with the contact plate and the sealing clamping plate respectively. The gap between the sealing clamping plate and the transmission shaft inserted in the assembly connecting hole is adjusted through the contact plate and the adjusting spring, it is guaranteed that the sealing clamping plate is attached to the outer surface of the transmission shaft all the time, the gap between the assembly connecting hole and the transmission shaft is sealed, and external dust is prevented from entering the bell jar body.

Description

Technical Field

[0001] This utility model relates to the field of bell-shaped cover technology, specifically a bell-shaped cover with a dustproof structure. Background Technology

[0002] A bell-shaped cover is a protective casing used to safeguard the internal components of a machine. It is usually made of metal or plastic. Its main function is to prevent foreign objects, moisture, and other contaminants from entering the machine, thereby protecting the equipment's operation and lifespan. It also helps to reduce noise and temperature, ensuring the machine's normal operation. Bell-shaped covers are suitable for various mechanical equipment, including motors, speed reducers, and transmission devices. They can prevent external substances from entering and protect the internal components from damage.

[0003] However, in order to ensure that the transmission stability of the equipment is not affected, the holes on the bell-shaped cover are often larger than the diameter of the transmission shaft, which allows external dust to enter the equipment through the gap between the bell-shaped cover and the transmission shaft. Therefore, this does not meet the existing requirements. To address this, we propose a bell-shaped cover with a dustproof structure. Utility Model Content

[0004] The purpose of this utility model is to provide a bell-shaped cover with a dustproof structure to solve the problems mentioned in the background art, such as the holes on the bell-shaped cover being larger than the diameter of the transmission shaft in order to ensure the stability of the equipment transmission, which allows external dust to enter the equipment through the gap between the bell-shaped cover and the transmission shaft.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bell-shaped cover with a dustproof structure, comprising a bell-shaped cover body, the top of the bell-shaped cover body having a component connection hole, and multiple sealing snap-fit ​​plates detachably installed on the inner side of the component connection hole, the sealing snap-fit ​​plates being fan-shaped and arranged in a circular array around the circular component connection hole, the outer side of the sealing snap-fit ​​plates having a slot, the sealing snap-fit ​​plates being snapped into the inner side of the component connection hole through the slot, a contact plate being installed on the inner side of the slot, and an adjusting spring being provided between the inner side of the contact plate and the sealing snap-fit ​​plates, the two ends of the adjusting spring being fixedly connected to the contact plate and the sealing snap-fit ​​plates respectively.

[0006] Preferably, the contact plate is arc-shaped and has a smooth outer surface, and the center of the contact plate coincides with the center of the component connection hole.

[0007] Preferably, the height of the outer groove of the sealing snap plate is consistent with the height of the component connection hole.

[0008] Preferably, the sealing snap plate includes a rubber jacket, and two end metal strips are installed on the inner side of the rubber jacket, with the two end metal strips located at both ends of the rubber jacket.

[0009] Preferably, a plurality of supporting metal strips are fixed between the two end metal strips, the supporting metal strips being arc-shaped and their centers coinciding with the center of the rubber jacket.

[0010] Preferably, the end metal strip and the supporting metal strip are both made of spring steel, and the end metal strip is U-shaped.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model utilizes the contact plate and adjusting spring to create a center point of the component connection hole on the sealing snap plate, thereby adjusting the gap between the sealing snap plate and the drive shaft installed between the component connection hole and the drive shaft. This ensures that the sealing snap plate is always in contact with the outer surface of the drive shaft, sealing the gap between the component connection hole and the drive shaft, and preventing external dust from entering the bell-shaped cover body.

[0013] 2. The outer surface of the contact plate of this utility model is smooth and its diameter is consistent with the diameter of the component connection hole. When the drive shaft is inserted and rotated in the middle of the component connection hole, it drives the sealing snap plate to rotate. This allows the sealing snap plate to slide against the inner surface of the component connection hole through the adjustment spring, ensuring that the sealing snap plate seals the gap between the component connection hole and the drive shaft while the operation of the drive shaft is not affected. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the sealing snap-fit ​​plate of this utility model;

[0016] Figure 3 This is a cross-sectional schematic diagram of the sealing snap-fit ​​plate of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the sealing snap-fit ​​plate of this utility model.

[0018] In the diagram: 1. Bell-shaped jar body; 2. Component connection hole; 3. Sealing snap plate; 31. Rubber jacket; 32. End metal strip; 33. Supporting metal strip; 4. Contact plate; 5. Adjusting spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] like Figures 1 to 4As shown, a bell-shaped cover with a dustproof structure has a component connection hole 2 at the top of the main body 1. Multiple sealing snap plates 3 are detachably installed on the inner side of the component connection hole 2. The sealing snap plates 3 are fan-shaped and arranged in a circular array around the circle of the component connection hole 2. The outer side of the sealing snap plates 3 has a slot. The sealing snap plates 3 are snapped into the inner side of the component connection hole 2 through the slot. A contact plate 4 is installed on the inner side of the slot. An adjusting spring 5 is provided between the inner side of the contact plate 4 and the sealing snap plates 3. The two ends of the adjusting spring 5 are fixedly connected to the contact plate 4 and the sealing snap plates 3 respectively. The gap between the sealing snap plates 3 and the drive shaft installed between the component connection hole 2 is adjusted by the contact plate 4 and the adjusting spring 5 to ensure that the sealing snap plates 3 always fit the outer surface of the drive shaft, sealing the gap between the component connection hole 2 and the drive shaft and preventing external dust from entering the interior of the bell-shaped cover 1.

[0021] The contact plate 4 is arc-shaped and has a smooth outer surface. The center of the contact plate 4 coincides with the center of the component connection hole 2, ensuring that the contact plate 4 and the inner surface of the component connection hole 2 can be smoothly fitted without gaps, and the coefficient of friction between the contact plate 4 and the inner surface of the component connection hole 2 is reduced to a minimum.

[0022] The height of the outer groove of the sealing snap plate 3 is consistent with the height of the component connection hole 2. The sealing snap plate 3 includes a rubber jacket 31. Two end metal strips 32 are installed on the inner side of the rubber jacket 31. The two end metal strips 32 are located at both ends of the rubber jacket 31. After the rubber sealing snap plate 3 is snapped into the inner side of the component connection hole 2, it fills the gap between the component connection hole 2 and the drive shaft, while ensuring that the sealing snap plate 3 and the bell-shaped cover body 1 are also sealed.

[0023] Multiple supporting metal strips 33 are fixed between the two end metal strips 32. The supporting metal strips 33 are arc-shaped and their centers coincide with the center of the rubber jacket 31. The end metal strips 32 and the supporting metal strips 33 are both made of spring steel. The end metal strips 32 are U-shaped. The spring steel rubber jacket 31 and the end metal strips 32 have good elasticity. The end metal strips 32 can ensure that the inner surface of the rubber jacket 31 is in contact with the inner and outer surfaces of the bell-shaped body 1. Furthermore, the supporting metal strips 33 apply pressure to the two end metal strips 32, so that the ends of the adjacent rubber jackets 31 fit together seamlessly, ensuring the overall sealing of the bell-shaped body.

[0024] Working principle: First, separate the upper and lower edges of the rubber sleeve 31 to increase the distance between the two ends of the end metal strip 32. Then, snap the rubber sleeve 31 into the inner side of the component connection hole 2 and loosen the rubber sleeve 31, allowing the end metal strip 32 to elastically recover and drive the upper and lower edges of the rubber sleeve 31 to return to their original positions, so that the inner surface of the rubber sleeve 31 fits against the inner and outer surfaces of the bell-shaped body 1. Install all the sealing snap plates 3 according to the above installation operation. After all the sealing snap plates 3 are installed, the supporting metal strip 33 applies pressure to the end metal strip 32, so that the adjacent rubber sleeves 31 fit against each other. Then... All the sealing snap plates 3 are pressed against the inner surface of the component connection hole 2, causing the rubber sleeve 31 to move closer to the contact plate 4 and the adjusting spring 5 to be compressed. At this time, the contact plate 4 is in contact with the inner surface of the component connection hole 2. Then, the drive shaft is passed through the middle of the component connection hole 2. After the drive shaft is installed, the sealing snap plates 3 are released, and the adjusting spring 5 elastically resets, causing the sealing snap plates 3 to reset and adhere to the outer surface of the drive shaft. The sealing snap plates 3, which are distributed in a circular array around the drive shaft, seal the gap between the bell-shaped cover body 1 and the drive shaft, ensuring that dust does not enter the equipment without affecting the operation of the drive shaft.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A bell-shaped cover with a dustproof structure, comprising a bell-shaped cover body (1), characterized in that: The top of the bell-shaped jar body (1) is provided with a component connection hole (2). Multiple sealing snap plates (3) are detachably installed on the inner side of the component connection hole (2). The sealing snap plates (3) are fan-shaped and arranged in a circular array around the circle of the component connection hole (2). The outer side of the sealing snap plates (3) is provided with a slot. The sealing snap plates (3) are snapped into the inner side of the component connection hole (2) through the slot. A contact plate (4) is installed on the inner side of the slot. An adjusting spring (5) is provided between the inner side of the contact plate (4) and the sealing snap plate (3). The two ends of the adjusting spring (5) are fixedly connected to the contact plate (4) and the sealing snap plate (3) respectively.

2. A bell-shaped cover with a dustproof structure according to claim 1, characterized in that: The contact plate (4) is arc-shaped and has a smooth outer surface. The center of the contact plate (4) coincides with the center of the component connection hole (2).

3. A bell-shaped cover with a dustproof structure according to claim 1, characterized in that: The height of the outer groove of the sealing snap plate (3) is consistent with the height of the component connection hole (2).

4. A bell-shaped cover with a dustproof structure according to claim 3, characterized in that: The sealing snap plate (3) includes a rubber jacket (31), and two end metal strips (32) are installed on the inner side of the rubber jacket (31). The two end metal strips (32) are located at both ends of the rubber jacket (31).

5. A bell-shaped cover with a dustproof structure according to claim 4, characterized in that: Multiple supporting metal strips (33) are fixed between the two end metal strips (32), and the supporting metal strips (33) are arc-shaped with their centers coinciding with the center of the rubber jacket (31).

6. A bell-shaped cover with a dustproof structure according to claim 5, characterized in that: The end metal strip (32) and the supporting metal strip (33) are both made of spring steel, and the end metal strip (32) is U-shaped.

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