Sealing structure

Abstract

The invention relates to a sealing structure. The sealing structure comprises a first sealing groove formed in a first sealing surface of a first component and a first sealing piece installed in the first sealing groove, and the first sealing piece is used for making contact with a first matching surface of a second component to form sealing between the first sealing surface and the first matching surface. The first seal is subjected to a shear force from the first mating surface during installation. Wherein the first sealing groove extends along the first sealing surface, in a section perpendicular to the first sealing surface, the cross section of the first sealing groove has the width parallel to the first sealing surface and the depth perpendicular to the first sealing surface, and the width of the first sealing groove is gradually increased in the direction towards the bottom of the first sealing groove; and the first sealing piece is clamped by the opening part of the first sealing groove. The sealing structure is convenient to install.

Description

Technical Field

[0001] The present invention relates to the field of sealing technology, and in particular to a sealing structure suitable for tangential installation. Background Art

[0002] In the prior art, a method of providing a seal between two components is usually to form a sealing groove on the sealing surface of one component and install a seal in the sealing groove. This sealing structure requires that the seal be installed in the sealing groove of one component before the two components are assembled, and then the component is assembled to the other component together with the seal. When the sealing surface is substantially perpendicular to the installation direction, this sealing structure is easy to install. However, sometimes the sealing surface may extend substantially parallel to the installation direction, which may cause the seal to be subjected to shear force from the mating surface during installation. This shear force may cause the seal to flip over or even fall off, thereby losing the sealing effect. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to provide a sealing structure suitable for tangential installation.

[0004] The above technical problems are solved by a sealing structure according to the present invention. The sealing structure includes a first sealing groove formed on a first sealing surface of a first component and a first sealing member installed in the first sealing groove, wherein the first sealing member is used to contact with a first mating surface of a second component to form a seal between the first sealing surface and the first mating surface, and the first sealing member is subjected to a shear force from the first mating surface during installation, wherein the first sealing groove extends along the first sealing surface, and in a section perpendicular to the first sealing surface, the cross section of the first sealing groove has a width parallel to the first sealing surface and a depth perpendicular to the first sealing surface, and the width of the first sealing groove gradually increases in a direction toward the bottom of the first sealing groove, so that the first sealing member is clamped by the mouth of the first sealing groove. The sealing ring is clamped by the sealing groove with a contracted mouth, so that the seal can resist the shear force from the mating surface during installation, thereby preventing the seal from being mistaken or falling off during installation.

[0005] According to a preferred embodiment of the present invention, when the first seal is installed in the first seal groove, the first seal can abut against the bottom of the first seal groove and partially protrude outside the first seal groove. Therefore, when the sealing surface and the mating surface are installed in place, the seal can be stably clamped between the sealing surface and the mating surface.

[0006] According to another preferred embodiment of the present invention, the depth of the first sealing groove can be gradually increased along the direction of the shear force applied to the first sealing member. The sealing groove of this structure produces a wedging effect during installation, and the shear force pushes the sealing member to move toward the side of the sealing groove with a greater depth, so that the sealing member is not easily moved out of the sealing groove under the action of the shear force.

[0007] According to another preferred embodiment of the present invention, in a section perpendicular to the first sealing surface, the side wall of the cross section of the first sealing groove may have a straight profile. Preferably, in a section perpendicular to the first sealing surface, the cross section of the first sealing groove may have a trapezoidal profile. A sealing groove of this shape is easy to process.

[0008] According to another preferred embodiment of the present invention, the first sealing groove may be an annular groove extending along the first sealing surface, and the first sealing member may be an annular sealing member. The annular sealing member separates the radial inner area from the radial outer area.

[0009] According to another preferred embodiment of the present invention, the sealing structure may further include a second sealing groove formed on the second sealing surface of the first component and a second sealing member installed in the second sealing groove, the second sealing member being used to contact the second mating surface to form a seal between the second sealing surface and the second mating surface, the first sealing surface and the second sealing surface being perpendicular to each other, the second sealing groove extending along the second sealing surface, the cross section of the second sealing groove having a width parallel to the second sealing surface and a depth perpendicular to the second sealing surface in a section perpendicular to the second sealing surface, the width of the second sealing groove gradually increasing in a direction toward the bottom of the second sealing groove, so that the second sealing member is clamped by the mouth of the second sealing groove. The second sealing groove formed on the sealing surface not subject to shear force may also have a structure similar to the first sealing groove, thereby preventing the seal from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention is further described below in conjunction with the accompanying drawings. The same reference numerals in the drawings represent elements with the same functions.

[0011] Figure 1 A cross-sectional view showing a sealing structure according to an exemplary embodiment of the present invention;

[0012] Figure 2 A perspective view showing a sealing structure according to an exemplary embodiment of the present invention;

[0013] Figure 3 an enlarged view showing a sealing structure according to an exemplary embodiment of the present invention; and

[0014] Figure 4a and Figure 4b A perspective view showing a seal of a sealing structure according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0015] The following detailed description and drawings are used to illustrate the principle of the present invention. The present invention is not limited to the preferred embodiments described. The protection scope of the present invention is defined by the claims.

[0016] According to an embodiment of the present invention, a sealing structure is provided. The sealing structure is suitable for sealing a tangentially mounted surface. Figures 1 to 4b In the illustrated embodiment, the sealing structure is described by taking the motor housing as an example, but it should be understood that the sealing structure can also be applied to other devices requiring sealing.

[0017] like Figure 1 As shown, the sealing structure according to the embodiment of the present invention is used to seal the first component 10 and the second component 20. For example, in this embodiment, the first component 10 is an end cover of the motor housing (see Figure 2 ), and the second component 20 is a motor housing. The first component 10 is formed with a first sealing surface 11, and the second component 20 is formed with a first mating surface 21. When the first component 10 and the second component 20 are installed together, the first sealing surface 11 and the first mating surface 21 can be substantially parallel to each other. During the installation process, the first part 10 is substantially parallel to the installation direction F of the first sealing surface 11. M Inserted into the interior of the second component 20, so that the first sealing surface 11 and the first mating surface 21 are aligned along the installation direction F M The first sealing surface 11 and the first mating surface 21 are substantially parallel to each other. A certain gap is allowed between the first sealing surface 11 and the first mating surface 21 to facilitate assembly. Such a gap can be sealed by a sealing structure.

[0018] The sealing structure includes a first sealing groove 12 formed on a first sealing surface 11 and a first sealing member 30 installed in the first sealing groove 12. The first sealing groove 12 extends along the first sealing surface 11 and is recessed in a direction substantially perpendicular to the first sealing surface 11. The first sealing member 30 extends along the first sealing groove 12, and may be, for example, an elastomer made of rubber or the like. When the first sealing member 30 is installed in the first sealing groove 12, the first sealing member 30 abuts against the bottom of the first sealing groove 12 and partially protrudes out of the first sealing groove 12. When the first component 10 and the second component 20 are installed together, the portion of the first seal 30 protruding out of the first sealing groove 12 contacts the first mating surface 21 of the second component 20, so that the first seal 30 is pressed between the first sealing surface 11 and the first mating surface 21 to achieve sealing.

[0019] The first seal 30 also contacts the first mating surface 21 during the installation process. In this case, the installation direction F of the first component 10 relative to the second component 20 is M The first seal 30 is subjected to shear force from the first mating surface 21 during the installation process. Figure 1 As shown, the shear force direction F of the first sealing member 30 is S With installation direction F M on the contrary.

[0020] In order to resist this shear force, the first sealing groove 12 has a width that narrows upward. Figure 1 and Figure 3 As shown, in a section perpendicular to the first sealing surface 11, the cross section of the first sealing groove 12 (i.e., a section perpendicular to the extension direction of the first sealing groove 12) has a width substantially parallel to the first sealing surface 11 and a depth substantially perpendicular to the first sealing surface 11. The width of the first sealing groove 12 gradually increases in a direction toward the bottom of the first sealing groove 12. When the first seal 30 is installed in the first sealing groove 12, the first seal 30 is clamped by the mouth of the first sealing groove 12. The clamping force applied by the mouth of the first sealing groove 12 can resist the shear force from the first mating surface 21, thereby preventing the first seal 30 from being misplaced or falling off during installation.

[0021] like Figure 1 As shown, when the first component 10 and the second component 20 are mounted together, for example, the shaft 50 passes through in a direction perpendicular to the two surfaces. Figure 2 As shown, in order to form a seal around the shaft 50, the first sealing groove 12 may be formed as an annular groove extending along the first sealing surface 11. Figure 4a As shown, accordingly, the first sealing member 30 is formed as an annular sealing member, such as a rubber ring.

[0022] The first sealing groove 12 may have a cross-sectional profile of various shapes as long as it has a width that narrows upward. For example, in order to facilitate processing, in a section perpendicular to the first sealing surface 11, the sidewall of the cross section of the first sealing groove 12 may have a straight profile. The sidewalls of the cross section of the first sealing groove 12 may be arranged substantially symmetrically about the center line. For example, in a section perpendicular to the first sealing surface 11, the cross section of the first sealing groove 12 may have a trapezoidal profile.

[0023] In a preferred embodiment, the M In the cross section of , the depth of the first sealing groove 12 can be gradually increased along the direction of the shear force applied to the first sealing member 30. Figure 1 In the cross section shown, the shear force direction F STowards the left side, the depth of the first sealing groove 12 can gradually increase from right to left. This shape of the sealing groove can produce a wedging effect during installation. During installation, the first sealing member 30 will move deeper into the first sealing groove 12 under the action of shear force, so it is not easy to fall off.

[0024] In a further preferred embodiment, this sealing structure can be suitable for multi-surface sealing. Figure 1 As shown, the first component 10 is also formed with a second sealing surface 13 that is substantially perpendicular to the first sealing surface 11, and the second component 20 is also formed with a second mating surface 22 (the second mating surface 22 may also be a surface on another component). When the first component 10 and the second component 20 are installed together, the second sealing surface 13 and the second mating surface 22 can also be substantially parallel to each other. Sealing is also required between the second sealing surface 13 and the second mating surface 22. The sealing structure preferably also includes a second sealing groove 14 formed on the second sealing surface 13 and a second sealing member 40 installed in the second sealing groove 14. Figure 2 and Figure 4b As shown, the second seal 40 is used to contact the second mating surface 22 to form a seal between the second sealing surface 13 and the second mating surface 22. The second sealing groove 14 extends substantially along the second sealing surface 13. In a section perpendicular to the second sealing surface 13, the cross section of the second sealing groove 14 has a width parallel to the second sealing surface 13 and a depth perpendicular to the second sealing surface 13. The width of the second sealing groove 14 gradually increases in a direction toward the bottom of the second sealing groove 14, so that the second seal 40 is clamped by the mouth of the second sealing groove 14. The portion of the sealing structure used to seal the second sealing surface 13 and the second mating surface 22 may have a structure similar to that of the portion used to seal the first sealing surface 11 and the first mating surface 21, which will not be described in detail herein. The portion of the sealing structure used to seal the second sealing surface 13 and the second mating surface 22 may prevent the second seal 40 from falling off during installation due to factors such as gravity.

[0025] The sealing structure according to the present invention can effectively resist the shear force during the installation process, and reduce the risk of the seal being misplaced or falling off during the installation process. This significantly improves the reliability of the seal. At the same time, the sealing structure is easy to process and has a low production cost.

[0026] Although possible embodiments are described by way of example in the above description, it should be understood that there are still a large number of variations of embodiments through the combination of all known and other technical features and embodiments that are easily conceivable to the skilled person. It should also be understood that the exemplary embodiment is only an example and that such an embodiment in no way limits the scope of protection, application and configuration of the present invention. The above description is more to provide the skilled person with a technical guide for converting at least one exemplary embodiment, wherein various changes can be made, especially changes in the functions and structures of the components, as long as they do not depart from the scope of protection of the claims.

[0027] Reference numerals list

[0028] 10. First Part

[0029] 11 First sealing surface

[0030] 12 First sealing groove

[0031] 13 Second sealing surface

[0032] 14 Second sealing groove

[0033] 20 Second Part

[0034] 21 First mating surface

[0035] 22 Second mating surface

[0036] 30 First seal

[0037] 40 Second seal

[0038] 50 Axis

[0039] F M Installation direction

[0040] F S Shear force direction

Claims

1. A sealing structure, comprising a first sealing groove (12) formed on a first sealing surface (11) of a first component (10) and a first sealing member (30) installed in the first sealing groove (12), wherein the first sealing member (30) is used to contact with a first mating surface (21) of a second component (20) to form a seal between the first sealing surface (11) and the first mating surface (21), and the first sealing member (30) is subjected to a shear force from the first mating surface (21) during installation. It is characterized in that The first sealing groove (12) extends along the first sealing surface (11). In a section perpendicular to the first sealing surface (11), the cross section of the first sealing groove (12) has a width parallel to the first sealing surface (11) and a depth perpendicular to the first sealing surface (11). The width of the first sealing groove (12) gradually increases in a direction toward the bottom of the first sealing groove (12), so that the first sealing member (30) is clamped by the mouth of the first sealing groove (12).

2. The sealing structure according to claim 1, characterized in that: When the first sealing member (30) is installed in the first sealing groove (12), the first sealing member (30) abuts against the bottom of the first sealing groove (12) and partially protrudes outside the first sealing groove (12).

3. The sealing structure according to claim 2, characterized in that: The depth of the first sealing groove (12) gradually increases along the direction of the shear force applied to the first sealing member (30).

4. The sealing structure according to claim 2, characterized in that: In a section perpendicular to the first sealing surface (11), a side wall of a cross section of the first sealing groove (12) has a straight line profile.

5. The sealing structure according to claim 4, characterized in that: In a section perpendicular to the first sealing surface (11), the cross section of the first sealing groove (12) has a trapezoidal profile.

6. The sealing structure according to claim 2, characterized in that: The first sealing groove (12) is an annular groove extending along the first sealing surface (11), and the first sealing member (30) is an annular sealing member.

7. The sealing structure according to any one of claims 1 to 6, characterized in that: The sealing structure also includes a second sealing groove (14) formed on the second sealing surface (13) of the first component (10) and a second sealing member (40) installed in the second sealing groove (14), wherein the second sealing member (40) is used to contact the second mating surface (22) to form a seal between the second sealing surface (13) and the second mating surface (22), the first sealing surface (11) and the second sealing surface (13) are perpendicular to each other, the second sealing groove (14) extends along the second sealing surface (13), and in a section perpendicular to the second sealing surface (13), the cross section of the second sealing groove (14) has a width parallel to the second sealing surface (13) and a depth perpendicular to the second sealing surface (13), and the width of the second sealing groove (14) gradually increases in a direction toward the bottom of the second sealing groove (14), so that the second sealing member (40) is clamped by the mouth of the second sealing groove (14).

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