Novel dynamic sealing plug

Abstract

The invention provides a novel dynamic sealing plug which comprises a mounting part, a limiting part and a corrugated connecting part arranged between the mounting part and the limiting part, the mounting part, the limiting part and the corrugated connecting part are integrally formed, the mounting part is fixed in a cavity, and the limiting part is arranged outside the cavity in an attached mode and used for sealing the cavity; through holes are formed in the mounting part, the limiting part and the corrugated connecting part, each through hole comprises a first port and a second port, the first port is in linear contact with the penetration piece, and the second port is not in contact with the penetration piece contact piece. The number and the height of the corrugated sections can be adjusted, so that the corrugated connecting part is designed according to the movement range of different moving parts, and the waterproof problem of the moving parts of different products is solved; the connecting plate and the limiting plate are used for limiting the sealing plug to move in the axial direction and move in the radial plane part, and the sealing and waterproof effects are better achieved.

Description

Technical Field

[0001] The invention relates to the technical field of sealing plugs, in particular to a novel dynamic sealing plug. Background Art

[0002] At present, automobile manufacturers generally require the waterproof performance of drivers used in various parts of the automobile to be at the IP×7 level, where the key to the waterproof performance of the driver lies in achieving the sealing of the penetration position of the drive rod 14 and the driver housing 15. Traditional drivers used in various parts of the automobile generally directly sleeve the bellows on the outer periphery of the drive rod 14 penetrating the driver housing 15 to achieve sealing, but the waterproof performance of the drivers used in various parts of the automobile using the above sealing structure is difficult to reach the IPx7 level. For this reason, in the prior art, a sealing ring is provided between the drive rod 14 used in various parts of the automobile and the driver housing 15 to improve the sealing effect, thereby improving the waterproof performance of the drivers used in various parts of the automobile. However, when the drive rod 14 generates an axial force and there is a tendency for the two to move relative to each other along the axial direction of the drive rod 14, the sealing ring may be deformed and separated from the sealing groove under the action of friction, thereby causing the sealing effect to deteriorate or the sealing to fail.

[0003] The publication number "CN217481884U" discloses a sealing structure of a vehicle side door opening driver, which includes a lead screw and a sleeve sleeved on the outer circumference of the lead screw. The sealing structure of the vehicle side door opening driver includes a sealing ring, which is sleeved on the outer circumference of the lead screw. One of the lead screw and the sleeve is provided with a first groove, the sealing ring is located in the first groove and is squeezed and confined between the lead screw and the sleeve, one of the sealing ring and the lead screw is provided with a second groove, the other of the sealing ring and the lead screw is provided with a first protruding block, the first protruding block is embedded in the second groove, one of the sealing ring and the sleeve is provided with a third groove, the other of the sealing ring and the sleeve is provided with a second protruding block, the second protruding block is embedded in the third groove, thereby limiting the sealing ring from escaping from the first groove, thereby avoiding the problem of poor sealing effect or sealing failure.

[0004] However, the above sealing still has the following problems:

[0005] 1. It is only applicable to the action between the screw rod and the matching sleeve, and cannot be adapted to more moving parts to solve the waterproof problem of their action position;

[0006] 2. This structure involves more processing parts (such as multiple groups of bumps and grooves), and during assembly, since there are more assembly points where the bumps and grooves cooperate with each other, not only is the cost of the structure itself high, but the assembly is also difficult. Summary of the invention

[0007] The purpose of the present invention is to provide a new type of dynamic sealing plug to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A novel dynamic sealing plug comprises a mounting portion, a limiting portion and a corrugated connecting portion arranged between the mounting portion and the limiting portion, wherein the mounting portion, the limiting portion and the corrugated connecting portion are integrally formed, the mounting portion is fixed inside a cavity, and the limiting portion is fitted outside the cavity for sealing the cavity;

[0010] The mounting portion, the limiting portion and the corrugated connecting portion are provided with through holes, and the through holes include a first port and a second port. The first port is in line contact with the through-piece, and the second port is not in contact with the through-piece contact piece.

[0011] Preferably, the mounting portion includes a connecting plate and a positioning assembly arranged on the bottom surface of the connecting plate.

[0012] Preferably, the positioning assembly includes at least two groups of protrusions, the protrusions are cylindrical structures, and the protrusions are symmetrically arranged on both sides of the second port.

[0013] Preferably, the positioning assembly comprises an annular protrusion, the annular protrusion and the second port are arranged concentrically, and the inner diameter of the annular protrusion is larger than the opening diameter of the second port.

[0014] Preferably, the limiting portion comprises a limiting plate, the first port is opened in the limiting plate, and a chamfer is opened in the first port for making the first port and the penetration member in line contact.

[0015] Preferably, the corrugated connecting portion includes at least two groups of corrugated segments.

[0016] Preferably, a corrugated section depression is formed between the opening of the through hole and the corrugated section, and the thickness between the corrugated section depression and the outer wall of the corrugated section is not less than 1 mm and not more than 2 mm.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The corrugated connection part used in the present invention is not limited to the embodiment of the present application, and can be designed in combination with different sports scenes. The number and height of the corrugated sections can be adjusted, so that the corrugated connection part can be designed according to the motion range of different moving parts, solving the waterproof problem of moving parts of different products;

[0019] 2. In the present invention, the displacement of the sealing plug is limited by the connecting plate and the limiting plate, and the corrugated connecting part connected between the connecting plate and the limiting plate is matched, so that the corrugated connecting part will not be compressed, and the sealing and waterproofing effect is better performed;

[0020] 3. The sealing plug prepared by the present invention can move according to the swing of the moving parts by providing the corrugated section, thereby ensuring the reliability of the sealing;

[0021] 4. In the present invention, the sealing plug is limited between the mounting plate and the cover plate in the driver housing by the connecting plate and the limiting plate, so it will not expand or contract according to the expansion or contraction of the moving parts, thereby ensuring the reliability of the sealing;

[0022] 5. The sealing plug provided by the present invention is a rubber part, the mold cost is low, the waterproofness is increased while the cost of the product is controlled, and no assembly is required;

[0023] 6. The sealing plug provided by the present invention is a rubber part, which is easy to install and light, and hardly increases the weight of the original product;

[0024] 7. The present invention can be used for dynamic sealing of different products, is not limited to the application of a certain product, and has a different shape. Different shapes can be designed according to different products. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 It is a first cross-sectional structural schematic diagram of the present invention;

[0027] Figure 3 It is a second cross-sectional structural schematic diagram of the present invention;

[0028] Figure 4 The figure is a schematic diagram of the installation structure of the actual application scenario of the present invention.

[0029] In the figure: 1. mounting portion; 2. limiting portion; 3. corrugated connecting portion; 4. through hole; 5. connecting plate; 6. protrusion; 7. limiting plate; 8. chamfer; 9. corrugated section; 10. corrugated section depression; 11. first port; 12. second port; 13. annular protrusion; 14. through piece; 15. driver housing. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-4 ,The present invention provides a technical solution: a new type of dynamic sealing plug;

[0032] Embodiment 1:

[0033] See also Figure 1 A novel dynamic sealing plug comprises a mounting portion 1, a limiting portion 2 and a corrugated connecting portion 3 arranged between the mounting portion 1 and the limiting portion 2. The mounting portion 1, the limiting portion 2 and the corrugated connecting portion 3 are integrally formed, the mounting portion 1 is fixed inside the cavity, and the limiting portion 2 is fitted outside the cavity for sealing the cavity;

[0034] In this embodiment, the sealing plug including the mounting portion 1, the limiting portion 2 and the corrugated connecting portion 3 is a rubber part, which adopts the automotive grade standard. In this embodiment, the material grade is preferably AA7563, and the material standard is HG / T2196-1991, so that the sealing component has good tensile elasticity, low temperature resistance, wear resistance, and resistance to cement, oil, alcohol, and glycerin, and is suitable for manufacturing shock-absorbing, buffering, dust-proof diaphragms and sealing products, heat-lined and brake fluid-resistant products. The core component of this application is that the rubber type is one of natural rubber, recycled rubber, styrene-butadiene rubber, butyl rubber, butadiene rubber, ethylene-propylene rubber and isoprene rubber, and its tensile strength (MPa): 214; elongation at break (%): 2300; compression rate (%): 70C×22h:s50, therefore, the service life of the sealing plug is guaranteed, thereby ensuring the sealing effect.

[0035] See also Figure 1 A through hole 4 is provided in the mounting portion 1, the limiting portion 2 and the corrugated connecting portion 3. The through hole 4 includes a first port 11 and a second port 12. The first port 11 is fitted with the through piece, and the second port 12 is not in contact with the through piece.

[0036] In this embodiment, since the mounting portion 1, the limiting portion 2 and the corrugated connection portion 3 are manufactured as an integrally formed structure through a mold, a through hole 4 is opened inside the through hole 4 and the through position of the limiting portion 2 forms a first port 11. This part and the through piece 14 are arranged in a close fit to ensure that during the movement of the through piece 14, the limiting portion 2 can follow the movement of the through piece 14. With the existence of the corrugated connection portion 3, the sealing plug is adapted to the sealing of different moving parts. The corrugated portion can be designed according to the movement range of different moving parts, and is not limited to the design structure of this embodiment. It should be noted that the opening shape of the through hole (4) can be adapted to different through pieces according to specific application scenarios, and is not limited to the opening structure of this embodiment.

[0037] See also Figure 2 and Figure 3 The mounting portion 1 includes a connecting plate 5 and a positioning assembly disposed on the bottom surface of the connecting plate 5. The positioning assembly includes at least two groups of protrusions 6, which are cylindrical structures and symmetrically disposed on both sides of the second port 12; the positioning assembly includes an annular protrusion 13, which is concentrically disposed with the second port 12, and the inner diameter of the annular protrusion 13 is larger than the opening diameter of the second port 12.

[0038] In this embodiment, please refer to Figure 4 The connecting plate 5 of the mounting portion 1 is fixed to the inside of the driver housing 15 by a positioning component. The positioning component is set to one of the protrusion 6 or the annular protrusion 13. At the same time, it is not limited to the above two structures. A through hole or an annular groove matching the protrusion 6 or the annular protrusion 13 is opened on the connecting component in the driver housing 15. The through hole and the protrusion 6 are matched to limit the installation position of the connecting plate 5, or the arc groove and the annular protrusion 13 are matched to limit the installation position of the connecting plate 5, so as to reduce the driving force generated by the penetration member 14 on the sealing plug during the movement, resulting in friction between the connecting plate 5 and the connecting surface, thereby extending the service life of the sealing plug as much as possible and ensuring the sealing effect.

[0039] See also Figure 2 The corrugated connecting portion 3 includes at least two groups of corrugated segments 9, and the corrugated portion is designed according to the motion range of different moving parts. In this embodiment, the setting of the corrugated segment 9 depends on the spacing between the connecting plate 5 and the limiting plate 7. In other use areas, different numbers and heights of corrugated segments 9 can be designed according to the motion range of the through-piece 14 and the installation positions of the connecting plate 5 and the limiting plate 7.

[0040] See also Figure 2 A corrugated section depression 10 is formed between the opening of the through hole 4 and the corrugated section 9, and the thickness between the corrugated section depression 10 and the outer wall of the corrugated section 9 is not less than 1 mm and not more than 2 mm.

[0041] In this embodiment, the through hole 4 passes through the connecting plate 5, the corrugated section 9 and the limiting plate 7 in sequence, and a corrugated section recess 10 is formed in the corrugated section 9, so that the corrugated section 9 forms a certain wall thickness. The setting range of this wall thickness is not less than 1 mm and not more than 2 mm. If it is less than 1 mm, cracks may be generated in the long-term process of following the movement of the through piece 14, affecting the sealing effect; if it exceeds 2 mm, it will cause uneven following when following the movement of different through pieces 14, and limit the hidden danger of the movement of the through piece 14, affecting the effect of the through piece 14. Therefore, this embodiment provides a better wall thickness range of the corrugated section 9, which can extend the service life of the sealing plug while ensuring the sealing performance. At the same time, the through piece 14 will not be subjected to reaction force due to excessive wall thickness.

[0042] Embodiment 2:

[0043] See also Figure 2 and Figure 4Based on the first embodiment, the first port 11 is the connecting opening of the through-piece 14, and the fitting is set to ensure that the movement of the through-piece 14 drives the limiting plate 7 to produce a follow-up displacement. However, since the movement of the through-piece 14 is relatively frequent, if the contact surface is large, a large friction force will be generated during the movement of the through-piece 14. Long-term use will affect the fitting effect of the sealing plug and the through-piece 14. Therefore, the present application provides a chamfer 8 in the first port 11. The specific structure includes: the limiting portion 2 includes the limiting plate 7, the first port 11 is opened in the limiting plate 7, and the first port 11 is provided with a chamfer 8 for making the first port 11 and the through-piece line contact.

[0044] In this embodiment, by opening a chamfer 8 in the first port 11, a line contact is formed as much as possible between the fitting position of the first port 11 and the limit plate 7, which ensures that the limit plate 7 can follow the displacement movement generated by the penetration piece 14. At the same time, the line contact is adopted to reduce the friction between the limit plate 7 and the penetration piece 14 as much as possible, thereby extending the service life of the sealing plug as much as possible.

[0045] Working principle: When the device is in use, the entire sealing plug is sleeved on the surface of the penetration piece 14, and the connecting plate 5 is slid to fit on the installation panel located in the driver housing 15, so that the protrusion 6 and the through hole on the installation panel correspond to each other. If the bottom of the connecting plate 5 is provided with an annular protrusion 13, then an annular groove matching the annular protrusion 13 is provided on the installation panel. By adjusting the shape of the sealing plug, the limiting plate 7 passes through the cover plate at the top of the driver housing 15, so that the limiting plate 7 and the outer surface of the cover plate are completely fitted, and at this time, the installation of the sealing plug is completed;

[0046] The connecting plate 5 is installed in the driver housing 15, the limiting plate 7 is fitted and limited to the outside of the driver housing 15, and the corrugated connection part 3 wraps the surface of the penetration piece 14 to form a sealing structure to solve the waterproof problem of the moving parts of the product. The existence of the corrugated connection part 3 makes the sealing plug adapt to the sealing of different moving parts. The axial position of the limiting plate 7 is limited. Due to the connection of the corrugated connection part 3, the limiting plate 7 can reciprocate in the direction perpendicular to the axial direction of the penetration piece 14. Therefore, the sealing plug can move according to the swing of the moving parts, thereby ensuring the reliability of the seal.

[0047] It should be noted that the penetration piece 14 and the driver housing 15 are devices or equipment existing in the prior art, or are devices or equipment that can be realized in the prior art. Their power supply, specific composition and principles are clear to those skilled in the art, so they are not described in detail.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of dynamic sealing plug, characterized in that: The invention comprises a mounting portion (1), a limiting portion (2) and a corrugated connecting portion (3) arranged between the mounting portion (1) and the limiting portion (2), wherein the mounting portion (1), the limiting portion (2) and the corrugated connecting portion (3) are integrally formed, the mounting portion (1) is fixed inside the cavity, and the limiting portion (2) is arranged in close contact with the outside of the cavity, and is used for sealing the cavity; A through hole (4) is provided in the mounting portion (1), the limiting portion (2) and the corrugated connecting portion (3); the through hole (4) comprises a first port (11) and a second port (12); the first port (11) is in line contact with the through piece (14), and the second port (12) is not in contact with the through piece (14).

2. A novel dynamic sealing plug according to claim 1, characterized in that: The mounting portion (1) comprises a connecting plate (5) and a positioning component arranged on the bottom surface of the connecting plate (5).

3. A novel dynamic sealing plug according to claim 2, characterized in that: The positioning assembly comprises at least two groups of protrusions (6), the protrusions (6) are cylindrical structures, and the protrusions (6) are symmetrically arranged on both sides of the second port (12).

4. A novel dynamic sealing plug according to claim 2, characterized in that: The positioning assembly comprises an annular protrusion (13), the annular protrusion (13) and the second port (12) are arranged concentrically, and the inner diameter of the annular protrusion (13) is larger than the opening diameter of the second port (12).

5. A novel dynamic sealing plug according to claim 1, characterized in that: The limiting portion (2) comprises a limiting plate (7), the first port (11) is opened in the limiting plate (7), and a chamfer (8) is opened in the first port (11) for making the first port (11) and the penetration piece in linear contact.

6. A novel dynamic sealing plug according to claim 1, characterized in that: The corrugated connecting portion (3) comprises at least two groups of corrugated segments (9).

7. A novel dynamic sealing plug according to claim 6, characterized in that: A corrugated section recess (10) is formed between the opening of the through hole (4) and the corrugated section (9), and the thickness between the corrugated section recess (10) and the outer wall of the corrugated section (9) is not less than 1 mm and not more than 2 mm.

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