阅读说明：本技术 一种玻璃导槽密封条及密封系统 (Glass guide groove sealing strip and sealing system ) 是由 田鑫 李星 张伟超 屈少举 黄勇 于 2020-04-22 设计创作，主要内容包括：本发明涉及一种玻璃导槽密封条及密封系统,其包括：密封条本体,卡设于导槽钣金内；凸起部,自所述密封条本体的顶部向中部凸设形成,用于接触所述玻璃的顶面,所述凸起部设有第一空腔；两个密封条接触部,分别设于所述密封条本体的相对两侧,用于在所述玻璃上升后接触所述玻璃的两侧面,两个所述密封条接触部均设有与所述第一空腔连通的第二空腔,所述第一空腔和所述第二空腔内均填充有流体；当所述玻璃上升至挤压所述凸起部时,至少部分所述第一空腔内的流体流入所述第二空腔,使所述第二空腔的压力增大,体积膨胀,进而所述密封条接触部与所述玻璃的接触压力增大,从而提升了密封性能,减少噪声泄漏。(The invention relates to a glass run channel sealing strip and sealing system, comprising: the sealing strip body is clamped in the guide groove metal plate; the bulge is formed by protruding from the top of the sealing strip body to the middle of the sealing strip body and is used for contacting the top surface of the glass, and the bulge is provided with a first cavity; the two sealing strip contact parts are respectively arranged on two opposite sides of the sealing strip body and used for contacting two side surfaces of the glass after the glass rises, the two sealing strip contact parts are respectively provided with a second cavity communicated with the first cavity, and the first cavity and the second cavity are filled with fluid; when the glass rises to press the bulge part, at least part of fluid in the first cavity flows into the second cavity, so that the pressure of the second cavity is increased, the volume is expanded, and the contact pressure of the contact part of the sealing strip and the glass is increased, thereby improving the sealing performance and reducing the noise leakage.)

1. A glass run seal for sealing glass (4), comprising:

the sealing strip body (1) is clamped in the guide groove metal plate (2);

the bulge (111) is formed by protruding from the top of the sealing strip body (1) to the middle and is used for contacting the top surface of the glass (4), and the bulge (111) is provided with a first cavity (5);

the two sealing strip contact parts (3) are respectively arranged on two opposite sides of the sealing strip body (1) and are used for contacting two side surfaces of the glass (4) after the glass (4) rises, the two sealing strip contact parts (3) are respectively provided with a second cavity (7) communicated with the first cavity (5), and fluids are filled in the first cavity (5) and the second cavity (7);

when the glass (4) rises to press the convex part (111), at least part of the fluid in the first cavity (5) flows into the second cavity (7).

2. The glass run seal of claim 1, wherein:

two side arms (12) are arranged on two sides of the sealing strip body (1), two sealing strip contact parts (3) are respectively and correspondingly arranged at the tail ends of the two side arms (12), and each side arm (12) is provided with a third cavity (6) for communicating the first cavity (5) with the second cavity (7); the sealing strip body (1) corresponds first cavity (5) is equipped with first supporting part (112) and supports and hold in guide slot panel beating (2), two side arm (12) correspond two third cavity (6) are equipped with second supporting part (121) respectively and support and hold in guide slot panel beating (2).

3. The glass run seal of claim 2, wherein:

the outer surface of the side arm (12) is provided with a groove (123), and the guide groove metal plate (2) protrudes into the groove (123) and is used for supporting the side arm (12).

4. The glass run seal of claim 1, wherein:

sealing strip contact site (3) certainly the bottom of sealing strip body (1) is upwards buckled and is extended formation, second cavity (7) certainly the bottom of sealing strip body (1) extends to the length of sealing strip contact site (3) at least half.

5. The glass run seal of claim 1, wherein:

from both sides arm (12) of sealing strip body (1) are protruding to be established formation to its middle part sealing strip contact site (3), each the surface of sealing strip contact site (3) has the depressed part, the upper and lower both sides of depressed part form the bump, the bump is used for the contact glass (4).

6. The glass run seal of claim 5, wherein:

the bumps contact the sides of the glass (4) when the glass (4) is not pressing the protrusions (111); when the glass (4) extrudes the convex part (111), the fluid in the first cavity (5) enters the second cavity (7), and the concave part and the convex points on the upper side and the lower side of the concave part jointly contact the glass (4).

7. A glass run seal system, comprising:

a glass (4);

a weatherstrip, said weatherstrip comprising:

the sealing strip body (1) is clamped in the guide groove metal plate (2);

the bulge (111) is formed by protruding from the top of the sealing strip body (1) to the middle and is used for contacting the top surface of the glass (4), and the bulge (111) is provided with a first cavity (5);

the two sealing strip contact parts (3) are respectively arranged on two opposite sides of the sealing strip body (1) and are used for contacting two side surfaces of the glass (4) after the glass (4) rises, the two sealing strip contact parts (3) are respectively provided with a second cavity (7) communicated with the first cavity (5), and fluids are filled in the first cavity (5) and the second cavity (7);

when the glass (4) rises to press the convex part (111), at least part of the fluid in the first cavity (5) flows into the second cavity (7).

8. The glass run seal system of claim 7, wherein:

when the glass (4) descends from the top of the sealing strip body (1), the fluid in the second cavity (7) flows back to the first cavity (5).

9. The glass run seal system of claim 7, wherein:

two side arms (12) are arranged on two sides of the sealing strip body (1), two sealing strip contact parts (3) are respectively and correspondingly arranged at the tail ends of the two side arms (12), and each side arm (12) is provided with a third cavity (6) for communicating the first cavity (5) with the second cavity (7); the sealing strip body (1) corresponds first cavity (5) is equipped with first supporting part (112) and supports and hold in guide slot panel beating (2), two side arm (12) correspond two third cavity (6) are equipped with second supporting part (121) respectively and support and hold in guide slot panel beating (2).

10. The glass run seal of claim 9, wherein:

the outer surface of the side arm (12) is provided with a groove (123), and the guide groove metal plate (2) protrudes into the groove (123) and is used for supporting the side arm (12).

Technical Field

The invention relates to the technical field of automobile parts, in particular to a glass guide groove sealing strip and a glass guide groove sealing system.

Background

With the continuous development of Chinese economy, the automobile manufacturing level is also continuously improved, and automobile consumers pay more and more attention to the reliability and the practicability, and the comfort and the convenience when purchasing automobiles. The glass guide groove sealing strip of the automobile window is installed on a window frame of an automobile, and has the main functions of water prevention, dust prevention, noise reduction, sound insulation and the like. Glass plays sealed effect through the laminating effect between glass and the glass guide slot sealing strip under the closed condition, prevents that harmful substance such as outside wind, rain and dust from invading in the car, reduces the vibration that the car travel in-process glass produced to cleaning nature and travelling comfort and exquisite sense in keeping the car.

Disclosure of Invention

The embodiment of the invention provides a glass guide groove sealing strip and a sealing system, which aim to solve the problem of noise leakage caused by the reduction of the contact force between the lip edge of the sealing strip and glass in the related art.

In a first aspect, there is provided a glass run seal comprising: the sealing strip body is clamped in the guide groove metal plate; the bulge is formed by protruding from the top of the sealing strip body to the middle of the sealing strip body and is used for contacting the top surface of the glass, and the bulge is provided with a first cavity; the two sealing strip contact parts are respectively arranged on two opposite sides of the sealing strip body and used for contacting two side surfaces of the glass after the glass rises, the two sealing strip contact parts are respectively provided with a second cavity communicated with the first cavity, and the first cavity and the second cavity are filled with fluid; when the glass rises to press the bulge, at least part of the fluid in the first cavity flows into the second cavity.

In some embodiments, two side arms are arranged on two sides of the sealing strip body, two sealing strip contact parts are respectively and correspondingly arranged at the tail ends of the two side arms, and each side arm is provided with a third cavity which is communicated with the first cavity and the second cavity; the sealing strip body corresponds the first cavity is equipped with first supporting part support hold in the guide slot panel beating, two the side arm corresponds two the third cavity is equipped with the second supporting part respectively and supports hold in the guide slot panel beating.

In some embodiments, the outer surface of the side arm is provided with a groove, and the guide groove metal plate protrudes into the groove to support the side arm.

In some embodiments, the sealing strip contact portion is formed by bending and extending upwards from the bottom of the sealing strip body, and the second cavity extends to at least half of the length of the sealing strip contact portion from the bottom of the sealing strip body.

In some embodiments, the two side arms of the sealing strip body are convexly provided to the middle part thereof to form the sealing strip contact part, the surface of each sealing strip contact part is provided with a concave part, and the upper side and the lower side of each concave part form convex points for contacting the glass.

In some embodiments, the bumps contact a side of the glass when the glass is not pressing the bump; when the glass extrudes the bulge, the fluid in the first cavity enters the second cavity, and the concave part and the salient points on the upper side and the lower side of the concave part are in contact with the glass together.

In a second aspect, there is provided a glass run seal system comprising: glass; a weatherstrip, said weatherstrip comprising: the sealing strip body is clamped in the guide groove metal plate; the bulge is formed by protruding from the top of the sealing strip body to the middle of the sealing strip body and is used for contacting the top surface of the glass, and the bulge is provided with a first cavity; the two sealing strip contact parts are respectively arranged on two opposite sides of the sealing strip body and used for contacting two side surfaces of the glass after the glass rises, the two sealing strip contact parts are respectively provided with a second cavity communicated with the first cavity, and the first cavity and the second cavity are filled with fluid; when the glass rises to press the bulge, at least part of the fluid in the first cavity flows into the second cavity.

In some embodiments, when the glass descends from the top of the weatherstrip body, the fluid in the second cavity flows back to the first cavity.

In some embodiments, two side arms are arranged on two sides of the sealing strip body, two sealing strip contact parts are respectively and correspondingly arranged at the tail ends of the two side arms, and each side arm is provided with a third cavity which is communicated with the first cavity and the second cavity; the sealing strip body corresponds the first cavity is equipped with first supporting part support hold in the guide slot panel beating, two the side arm corresponds two the third cavity is equipped with the second supporting part respectively and supports hold in the guide slot panel beating.

In some embodiments, the outer surface of the side arm is provided with a groove, and the guide groove metal plate protrudes into the groove to support the side arm.

The technical scheme provided by the invention has the beneficial effects that:

the embodiment of the invention provides a glass guide groove sealing strip and a glass guide groove sealing system, wherein the first cavity is arranged in the bulge part, the second cavity communicated with the first cavity is arranged in the sealing strip contact part, the first cavity and the second cavity are filled with the fluid, when the glass rises to contact with the bulge part and further extrudes the bulge part, the fluid in the first cavity can flow into the second cavity, so that the pressure of the second cavity is increased, the increased pressure is transmitted to the glass through the sealing strip contact part, the volume of the second cavity is increased, the sealing strip contact parts on two sides of the glass jointly extrude the glass, the contact pressure of the sealing strip contact part and the glass is increased, and therefore, the contact between the sealing strip contact part and the glass is more stable, And the sealing performance is improved and the noise leakage is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a cross-sectional view of a conventional glass run seal configuration;

FIG. 2 is a cross-sectional view of a magnetic glass run channel seal strip according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of another magnetic glass run seal configuration according to an embodiment of the present invention.

In the figure: 1-a sealing strip body, 11-a main body part, 111-a bulge part, 112-a first support part, 12-a side arm, 121-a second support part, 122-a third support part, 123-a groove, 2-a guide groove sheet metal, 21-a first support wall, 22-a second support wall, 23-a third support wall, 3-a sealing strip contact part, 4-glass, 5-a first cavity, 6-a third cavity and 7-a second cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The embodiment of the invention provides a glass guide groove sealing strip and a sealing system, which can solve the problem of noise leakage caused by the reduction of the contact force between the lip edge of the sealing strip and glass in the related art.

Referring to fig. 2, a glass run sealing strip according to an embodiment of the present invention may be made of rubber, and includes: the sealing strip body 1 is clamped in the guide groove metal plate 2; and the sealing strip contact parts 3 are arranged on two sides of the sealing strip body 1 and are used for contacting two opposite sides of the glass 4.

Referring to fig. 2, in some embodiments, the guide groove metal plate 2 may be fixed to a window frame of an automobile door, and the guide groove metal plate 2 may be bent to form a first support wall 21, a second support wall 22 and a third support wall 23, the first support wall 21, the second support wall 22 and the third support wall 23 enclose a groove, the second support wall 22 and the third support wall 23 are respectively located at two opposite ends of the first support wall 21, and the weather strip body 1 may be clamped in the groove.

Referring to fig. 2, in some alternative embodiments, the weatherstrip body 1 may include a main body 11, two side arms 12 extending downward from two ends of the main body 11, the two side arms 12 supporting the second support wall 22 and the third support wall 23, the main body 11 and the two side arms 12 together define an inner cavity for inserting the glass 4, a protrusion 111 may be protruded from a middle portion of the main body 11 toward the inner cavity, the protrusion 111 may be provided with a first cavity 5, the first cavity 5 is filled with a fluid, in this embodiment, the first cavity 5 is preferably filled with the fluid, in other embodiments, the first cavity 5 is also filled with a small amount of air, and the main body 11 may protrude upward to a first support portion 112, the first supporting portion 112 and the protruding portion 111 may be correspondingly disposed on opposite sides of the main body 11, and the first supporting portion 112 is correspondingly supported by the first supporting wall 21; the outer surfaces of the two side arms 12 may be respectively provided with a second supporting portion 121 and a third supporting portion 122 protruding outwards, the second supporting portion 121 of one side arm 12 is correspondingly supported on the second supporting wall 22, and the second supporting portion 121 of the other side arm 12 is correspondingly supported on the third supporting wall 23, wherein the third supporting portions 122 of the two side arms 12 are respectively correspondingly supported on the bottoms of the second supporting wall 22 and the third supporting wall 23, a groove 123 is formed between the second supporting portion 121 and the third supporting portion 122 of each side arm 12, and the second supporting wall 22 and the third supporting wall 23 respectively protrude into the groove 123 to clamp and support the two side arms 12.

Referring to fig. 2, in some embodiments, each of the side arms 12 may be provided with a third cavity 6 communicating with the first cavity 5, the third cavity 6 penetrates from one end of the side arm 12 to the opposite end along the extending direction of the side arm 12, the third cavity 6 is also filled with a fluid, in this embodiment, the third cavity 6 is preferably filled with the fluid, in other embodiments, the third cavity 6 is also filled with a small amount of air, the second support portion 121 and the third support portion 122 are both located outside the third cavity 6 and also can be used for supporting the third cavity 6 and preventing the third cavity 6 from expanding outwards, and the second support wall 22 and the third support wall 23 protrude into the groove 123 and also can be used for supporting the third cavity 6.

Referring to fig. 2, in some alternative embodiments, two of the sealing strip contacting portions 3 may be formed by bending and extending upward from the bottom ends of the two side arms 12 toward the middle of the inner cavity, the two sealing strip contacting portions 3 may be arranged obliquely and crosswise, a second cavity 7 connected to the third cavity 6 may be provided in each sealing strip contacting portion 3 to communicate the first cavity 5 with the second cavity 7, the second cavity 7 is also filled with a fluid, in this embodiment, the second cavity 7 is preferably filled with the fluid, in other embodiments, the second cavity 7 is also filled with a small amount of air, and the second cavity 7 extends upward from the bottom of the side arm 12 to a length at least half of the length of the sealing strip contacting portion 3.

When the glass 4 rises between the two sealing strip contact parts 3 and the glass 4 does not contact the boss part 111, a small amount of fluid in the second cavity 7 moves to the first cavity 5, or the amount of fluid in the second cavity 7 is almost unchanged, so that the contact pressure of the two sealing strip contact parts 3 on the glass 4 is small in the rising process of the glass 4, the resistance is small, and the glass 4 is easy to move upwards; when the glass 4 rises to contact with the boss 111 and further presses the boss 111, at least part of fluid in the first cavity 5 continuously enters the second cavity 7 through the third cavity 6, so that the volume of the second cavity 7 is enlarged, the volume of the seal contact part 3 expands, the two seal contact parts 3 jointly press the glass 4 towards the middle due to the expansion of the volumes of the seal contact parts 3 on the two sides of the glass 4, the contact with the side surface of the glass 4 is tighter, the pressure in the second cavity 7 is increased due to the flow of the fluid in the second cavity 7, the increased pressure is transmitted to the glass 4 through the seal contact part 3, the contact pressure between the seal contact part 3 and the glass 4 is further increased, and the contact between the seal contact part 3 and the glass 4 is more stable, And the sealing performance is improved.

Since the second supporting portion 121 and the third supporting portion 122 are disposed on the outer side of the side arm 12 to support the third cavity 6, and the second supporting wall 22 or the third supporting wall 23 abuts against the outer side surface of the side arm 12, when the fluid flows into the second cavity 7 from the first cavity 5 through the third cavity 6, the outer side of the third cavity 6 is limited by the second supporting wall 22 or the third supporting wall 23 and is not easy to expand outward, and the fluid can continuously enter the second cavity 7 through the third cavity 6, so that the volume of the second cavity 7 is increased.

When the glass 4 descends, the volume of the first cavity 5 is gradually increased, the contractibility of the rubber material enables the fluid in the second cavity 7 to gradually flow into the first cavity 5, the pressure of the sealing strip contact part 3 on the glass 4 is gradually reduced, the descending of the glass 4 is facilitated, and the descending resistance of the glass 4 is reduced; and when the glass 4 is completely separated from the sealing strip contact part 3, the sealing strip returns to the initial state, so that the working reliability and repeatability of the sealing strip are ensured.

Referring to fig. 3, in another glass run channel sealing strip provided in the embodiment of the present invention, the sealing strip contact portion 3 may be formed by directly protruding from the side arm 12 to the inner cavity, the surface of the sealing strip contact portion 3 may also be formed by outwardly recessing a recessed portion, the upper and lower sides of the recessed portion form protruding points, and the second cavity 7 extends from the protruding point above the recessed portion to the protruding point below the recessed portion, when the glass 4 rises to contact the sealing strip contact portion 3, only two protruding points contact with the side surface of the glass 4 first, and the contact pressure is small, so that the glass 4 can normally rise and fall without being affected; when the glass 4 rises to contact the convex part 111 and further press the convex part 111, at least part of fluid in the first cavity 5 enters the second cavity 7 through the third cavity 6, the volume of the second cavity 7 is gradually increased, the concave part is filled with the inflowing fluid, the concave part and the upper and lower convex points of the concave part are contacted with the glass 4 together to form surface contact with the glass 4, the contact pressure between the sealing strip contact part 3 and the glass 4 is gradually increased, the contact is more stable and firm, and the sealing performance is improved.

When the glass 4 starts to descend, the volume of the first cavity 5 is gradually increased, and the contractibility of the rubber material enables the fluid in the second cavity 7 to gradually flow back into the first cavity 5; the contact pressure of the sealing strip contact part 3 and the glass 4 is gradually reduced, the sealing strip contact part 3 gradually returns to the concave state, the contact between the sealing strip contact part 3 and the glass 4 is restored to be two convex point contacts, the descending resistance of the glass 4 is reduced, and the descending of the glass 4 is facilitated; and when the glass 4 is completely separated from the sealing strip contact part 3, the sealing strip returns to the initial state, so that the working reliability and repeatability of the sealing strip are ensured.

Referring to fig. 2 and 3, embodiments of the present invention also provide a glass run sealing system comprising: the glass 4 and the sealing strip are used for sealing the glass 4; the sealing strip includes: the sealing strip body 1 is clamped in the guide groove metal plate 2; and the sealing strip contact parts 3 are arranged on two sides of the sealing strip body 1 and are used for contacting two opposite sides of the glass 4.

Referring to fig. 2, in some alternative embodiments, the weatherstrip body 1 may include the main body portion 11, corresponding to the first supporting wall 21, and two side arms 12 extending downward from both ends of the main body 11, respectively, the two side arms 12 corresponding to the second supporting wall 22 and the third supporting wall 23, the main body 11 and the two side arms 12 together enclose an inner cavity, a protrusion 111 may be protruded from the middle of the main body 11 to the inner cavity, the protrusion 111 may be provided with the first cavity 5, the first cavity 5 is filled with a fluid, the main body 11 may be protruded with a first supporting portion 112, the first supporting portion 112 and the protruding portion 111 may be correspondingly disposed on opposite sides of the main body 11, and the first supporting portion 112 is correspondingly supported on the first supporting wall 21; the outer surfaces of the two side arms 12 may be respectively provided with a second supporting portion 121 and a third supporting portion 122 protruding outwards, the second supporting portion 121 of one side arm 12 is correspondingly supported on the second supporting wall 22, and the second supporting portion 121 of the other side arm 12 is correspondingly supported on the third supporting wall 23, wherein the third supporting portions 122 of the two side arms 12 are respectively correspondingly supported on the bottoms of the second supporting wall 22 and the third supporting wall 23, a groove 123 is formed between the second supporting portion 121 and the third supporting portion 122 of each side arm 12, and the second supporting wall 22 and the third supporting wall 23 respectively protrude into the groove 123 to clamp and support the two side arms 12.

Referring to fig. 2, in some embodiments, each of the side arms 12 may be provided with the third cavity 6 communicating with the first cavity 5, the third cavity 6 penetrates from one end of the side arm 12 to the opposite end along the extending direction of the side arm 12, the third cavity 6 is also filled with fluid, the second support portion 121 and the third support portion 122 are both located outside the third cavity 6, and the second support wall 22 and the third support wall 23 protrude into the groove 123 for supporting the third cavity 6.

Referring to fig. 2, in some alternative embodiments, the two sealing strip contacting portions 3 may be formed by bending and extending upward from bottom ends of the two side arms 12 and toward a middle portion of the inner cavity, the two sealing strip contacting portions 3 may be obliquely and crosswise arranged, or the sealing strip contacting portions 3 may be formed by directly protruding from the side arms 12 toward the inner cavity, a surface of the sealing strip contacting portion 3 may further be recessed outward to form a recessed portion, upper and lower sides of the recessed portion form protruding points, a second cavity 7 connected to the third cavity 6 may be disposed in each sealing strip contacting portion 3 to communicate the first cavity 5 with the second cavity 7, and the second cavity 7 is also filled with a fluid.

When the glass 4 rises to contact the boss 111 and further presses the boss 111, at least part of fluid in the first cavity 5 enters the second cavity 7 through the third cavity 6, the volume of the second cavity 7 is gradually increased, the contact pressure between the sealing strip contact part 3 and the glass 4 is gradually increased, the contact is more stable and firm, and the sealing performance is improved.

When the glass 4 starts to descend, the volume of the first cavity 5 is gradually increased, and the contractibility of the rubber material enables the fluid in the second cavity 7 to gradually flow back into the first cavity 5; the contact pressure of the seal strip contact part 3 and the glass 4 is gradually reduced, so that the glass 4 is lowered; and when the glass 4 is completely separated from the sealing strip contact part 3, the sealing strip returns to the initial state, so that the working reliability and repeatability of the sealing strip are ensured.

The principles of the glass guide groove sealing strip and the glass guide groove sealing system provided by the embodiment of the invention are as follows:

because the first cavity 5 is arranged in the boss 111, the seal strip contact part 3 is provided with the second cavity 7 communicated with the first cavity 5, and the first cavity 5 and the second cavity 7 are filled with the fluid, when the glass 4 rises to contact the boss 111 and further extrudes the boss 111, the fluid in the first cavity 5 can flow into the second cavity 7, because the fluid flows in the second cavity 7, the pressure of the second cavity 7 is increased, the increased pressure is transmitted to the glass 4 through the seal strip contact part 3, the volume of the second cavity 7 is increased, the seal strip contact parts 3 on two sides of the glass 4 jointly extrude the glass 4, the contact pressure between the seal strip contact part 3 and the glass 4 is increased, and therefore, the contact between the seal strip contact part 3 and the glass 4 is more stable, The sealing performance is improved and the noise leakage is reduced; of course, the glass run sealing strip and the glass run sealing system provided by the embodiment of the invention are not only suitable for sealing glass of an automobile, but also suitable for structures and systems of any other sealing measures.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.