Dustproof O-shaped rubber sealing ring

Abstract

The utility model discloses a dustproof O-shaped rubber sealing ring, which belongs to the technical field of sealing rings and comprises an O-shaped ring body and two groups of dustproof covers, the O-shaped ring body is in a hollow circular ring shape, an inner cavity is formed in the O-shaped ring body, two groups of annular hidden bins are arranged on the surface of the O-shaped ring body, and the two groups of dustproof covers are arranged on the O-shaped ring body. The two sets of annular hidden bins are symmetrically arranged, the two sets of hidden bins are connected with the inner cavity through multiple sets of connecting holes, the two sets of dust covers are located in the two sets of annular hidden bins correspondingly, multiple pressure rods are arranged on the dust covers, and the multiple pressure rods are slidably connected into the multiple sets of connecting holes; the inner side and the outer side of the O-shaped ring body are extruded, so that the space of the inner cavity is compressed, compressed air pushes the multiple sets of pressure rods to slide in the multiple sets of connecting holes through the inner cavity, and therefore the dustproof cover is driven to move towards the two sides of the O-shaped ring body, and dustproof sealing of the O-shaped rubber ring is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing rings, and in particular relates to a dustproof O rubber sealing ring. Background Art

[0002] O-ring is a rubber seal ring with a circular cross section. It is called O-shaped rubber seal ring because of its O-shaped cross section. O-ring is the most common mechanical design for sealing because of its low price, simple manufacturing, reliable function and simple installation requirements.

[0003] The existing dustproof O-type rubber sealing ring is usually an integrally formed dustproof O-type rubber sealing ring, which results in poor dustproof sealing effect when the dustproof O-type rubber sealing ring is installed on the equipment. Utility Model Content

[0004] The utility model aims to solve the problem that the dustproof effect of the integrally formed O-type rubber sealing ring is poor, and proposes a dustproof O-type rubber sealing ring.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a dustproof O-ring rubber sealing ring, comprising an O-ring body and two groups of dust covers, the O-ring body is a hollow circular ring, the interior of the O-ring body forms an inner cavity, and two groups of annular hidden chambers are opened on the surface of the O-ring body, the two groups of the annular hidden chambers are symmetrically arranged, and the two groups of the annular hidden chambers are connected to the inner cavity through multiple groups of connecting holes, the two groups of the dust covers are respectively located in the two groups of the annular hidden chambers, and the dust covers are provided with multiple pressure rods, and the multiple pressure rods are slidably connected in the multiple groups of connecting holes.

[0006] As a further description of the above technical solution:

[0007] The cross section of the annular hidden compartment is conical, and the inclination angle of the cone is less than 45°.

[0008] As a further description of the above technical solution:

[0009] The cross-section of the dust cover is mushroom-shaped, and both sides of the dust cover are provided with bending openings extending toward the inner cavity, the bending openings fit the inner wall of the annular hidden bin, and the ends of the bending openings abut against the bottom wall of the annular hidden bin.

[0010] As a further description of the above technical solution:

[0011] A pressure chamber is provided inside the pressure rod, and the pressure chamber is connected to the inner cavity.

[0012] As a further description of the above technical solution:

[0013] A pressure chamber is provided inside the pressure rod, and the pressure chamber is connected to the inner cavity.

[0014] As a further description of the above technical solution:

[0015] The material of the dust cover is soft plastic.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0017] 1. In the utility model, the inner and outer sides of the O-ring body are squeezed, so that the inner cavity space is compressed, and the compressed gas pushes multiple groups of pressure rods to slide in multiple groups of connecting holes through the inner cavity, thereby driving the dust cover to move to both sides of the O-ring body, thereby realizing the dustproof seal of the O-ring rubber ring.

[0018] 2. In the utility model, a hook is provided at the tail of the pressure rod to prevent the pressure rod from being squeezed out of the connecting hole when the O-ring body is over-extruded. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of a dustproof O-type rubber sealing ring.

[0020] Figure 2 for Figure 1 Cross-sectional view of .

[0021] Figure 3 for Figure 2 A partial enlarged view of .

[0022] Figure 4 The figure is a cross-sectional view of a dustproof O-type rubber sealing ring in use.

[0023] Figure 5 for Figure 4 A partial enlarged view of .

[0024] Figure 6 An exploded view of a dustproof O-type rubber seal ring.

[0025] Legend:

[0026] 1. O-ring body; 2. Dust cover; 3. Inner cavity; 4. Annular hidden compartment; 5. Connecting hole; 6. Pressure rod; 7. Bending and closing; 8. Pressure chamber; 9. Hook. DETAILED DESCRIPTION

[0027] 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 of 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.

[0028] See also Figure 1-6 The utility model provides a technical solution: a dustproof O-type rubber sealing ring, comprising an O-ring body 1 and two groups of dust covers 2, the O-ring body 1 is a hollow circular ring, an inner cavity 3 is formed inside the O-ring body 1, and two groups of annular hidden warehouses 4 are opened on the surface of the O-ring body 1, the two groups of annular hidden warehouses 4 are symmetrically arranged, and the two groups of annular hidden warehouses are connected to the inner cavity 3 through multiple groups of connecting holes 5, and the two groups of dust covers 2 are respectively located in the two groups of annular hidden warehouses 4, and multiple pressure rods 6 are arranged on the dust cover 2, and the multiple pressure rods 6 are slidably connected in the multiple groups of connecting holes 5. The inner and outer sides of the O-ring body 1 are squeezed, and the space of the inner cavity 3 is compressed. The compressed gas pushes the multiple groups of pressure rods 6 to slide in the multiple groups of connecting holes 5 through the inner cavity 3, thereby driving the dust cover 2 to move to both sides of the O-ring body 1 to achieve dustproof sealing of the O-type rubber ring;

[0029] The cross section of the annular hidden bin 4 is conical, and the inclination angle of the cone is less than 45°, so as to prevent dust from entering the annular hidden bin and facilitate the dust cover 2 to slide in the annular hidden bin 4;

[0030] The cross section of the dust cover 2 is mushroom-shaped, and both sides of the dust cover 2 are provided with a bent opening 7 extending toward the inner cavity 3, the bent opening 7 fits the inner wall of the annular hidden bin 4, and the end of the bent opening 7 abuts against the bottom wall of the annular hidden bin 4, the bent opening 7 fits the inner wall of the annular hidden bin 4, and the bent opening 7 slides along the inner wall of the annular hidden bin 4, and the end of the bent opening 7 is conducive to the retraction of the dust cover 2;

[0031] A pressure chamber 8 is provided inside the pressure rod 6, and the pressure chamber 8 is connected to the inner cavity 3, so as to facilitate gas exchange between the inner cavity 3 and the pressure chamber 8, thereby driving the pressure rod 6 to move;

[0032] The tail of the pressure rod 6 is provided with a hook portion 9 to prevent the pressure rod 6 from being squeezed out of the connecting hole 5 when the O-ring body 1 is over-extruded;

[0033] The dust cover 2 is made of soft plastic, which makes it easy for the dust cover 2 to enter and exit the annular hidden compartment 4.

[0034] Working principle: First, two groups of dust covers 2 with multiple groups of pressure rods 6 are installed into the annular hidden warehouse 4 located on both sides of the O-ring body 1. Secondly, the O-ring body 1 is installed to the position where the equipment needs to be sealed. The equipment components squeeze the inside and outside of the O-ring body 1, and the space of the inner cavity 3 is compressed. The compressed air enters the pressure chamber 8 connected to the inner cavity 3, pushing the two groups of pressure rods 6 to slide in the connecting hole 5. The two groups of pressure rods 6 respectively drive the two groups of dust covers 2 to move from the annular hidden warehouse 4 to the two sides of the O-ring body 1. After the two groups of dust covers 2 move to the position, the O-ring body can achieve the effect of dustproof sealing when in use. Furthermore, a hook 9 is provided at the tail of the pressure rod 6 to prevent the pressure rod 6 from being squeezed out of the connecting hole 5 when the O-ring body 1 is over-squeezed. Similarly, when the O-ring body 1 is removed from the installation position, the space of the inner cavity 3 is stretched, and the two groups of dust covers 2 are hidden in the annular hidden warehouse 4 again, which realizes the dustproof sealing and the reuse of the sealing ring.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dustproof O-type rubber sealing ring, characterized in that: The invention comprises an O-ring body (1) and two groups of dust covers (2), wherein the O-ring body (1) is in a hollow annular shape, an inner cavity (3) is formed inside the O-ring body (1), and two groups of annular hidden chambers (4) are provided on the surface of the O-ring body (1), the two groups of annular hidden chambers (4) are symmetrically arranged, and the two groups of annular hidden chambers are connected to the inner cavity (3) through multiple groups of connecting holes (5), the two groups of dust covers (2) are respectively located in the two groups of annular hidden chambers (4), and multiple pressure rods (6) are provided on the dust covers (2), and the multiple pressure rods (6) are slidably connected in the multiple groups of connecting holes (5).

2. A dustproof O-type rubber sealing ring according to claim 1, characterized in that: The cross section of the annular hidden compartment (4) is conical, and the inclination angle of the cone is less than 45°.

3. The dustproof O-type rubber sealing ring according to claim 1, characterized in that: The cross-section of the dust cover (2) is mushroom-shaped, and both sides of the dust cover (2) are provided with a bending opening (7) extending toward the inner cavity (3), the bending opening (7) fits the inner wall of the annular hidden bin (4), and the end of the bending opening (7) abuts against the bottom wall of the annular hidden bin (4).

4. The dustproof O-type rubber sealing ring according to claim 1, characterized in that: A pressure chamber (8) is provided inside the pressure rod (6), and the pressure chamber (8) is connected to the inner cavity (3).

5. The dustproof O-type rubber sealing ring according to claim 1, characterized in that: The tail of the pressure rod (6) is provided with a hook portion (9).

6. The dustproof O-type rubber sealing ring according to claim 1, characterized in that: The material of the dust cover (2) is soft plastic.

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