Sealing cover and liquid storage container
By designing a stop body and an elastic body structure for the closed cap, the problem of liquid splashing and leakage in the liquid storage container under impact was solved, achieving the effects of leak prevention and pressure balance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-03-13
AI Technical Summary
When a liquid storage container is subjected to external impact, the liquid is prone to splashing and leaking through the sealed cap, resulting in pressure imbalance and liquid loss.
Design a sealing cap, including a cap body, a stop body, and an elastic body. The widened part of the stop body extends into the container opening to stop the liquid. The elastic body and the cap body together form a communicating chamber to maintain gas pressure balance, and gas communication is achieved through a through hole and a connecting part.
It effectively prevents liquid splashing and leakage, maintains the pressure balance inside and outside the liquid storage container, and ensures smooth liquid extraction.
Smart Images
Figure CN223990348U_ABST
Abstract
Description
Technical Field
[0001] This application relates to a sealing cap and a liquid storage container including such a sealing cap. Background Technology
[0002] When a fluid reservoir is subjected to external impact, the liquid stored inside shakes and splashes towards the opening, potentially causing leakage. For example, in brake fluid reservoirs, to ensure pressure balance inside and outside the reservoir and to facilitate the smooth drawing of brake fluid, the reservoir is not gas-tight. When the vehicle is bumped, some brake fluid splashes towards the opening and leaks out through a dedicated gas passage on the sealed cap.
[0003] It should be noted that the content described herein is only to provide background information in relation to this disclosure and does not necessarily belong to the prior art. Utility Model Content
[0004] Depending on the specific aspects, the purpose of this application is to provide a sealing cap and a liquid storage container for use in liquid storage containers, which can have improved leak-proof performance.
[0005] In addition, this application aims to solve or alleviate other technical problems existing in the prior art.
[0006] According to a first aspect of this application, a sealing cap is provided for sealing the opening of a liquid storage container, comprising a cap body and a stop body. The cap body includes a top wall and a side wall projecting from the top wall. The stop body includes a fixing portion and a widening portion, wherein the fixing portion is detachably connected to the inner surface of the cap body, and the widening portion extends circumferentially about a direction parallel to the central axis of the sealing cap, the widening portion being used to extend into the container opening to stop splashed liquid.
[0007] Optionally, in the sealing cap proposed according to this application, an elastic body is provided on the inner surface of the cap body, and the widened portion is arranged on the side of the elastic body away from the top wall. The elastic body and the top wall together define a communicating chamber, and through the communicating chamber, gas communication between the inside and outside of the liquid storage container is established in the closed state when the sealing cap is fixed to the container opening.
[0008] Optionally, in the sealing cap proposed according to this application, the inner surface of the cap body is provided with a recess, which includes a first section extending on the top wall and a second section extending on the side wall, wherein the recess connects the communicating chamber to the outside of the liquid storage container in the closed state.
[0009] Optionally, in the sealing cover proposed according to this application, the elastomer is provided with a through hole, and a mating portion is provided through the through hole. One end of the mating portion is connected to the top wall, and the other end is detachably connected to the fixing portion of the stop body.
[0010] Optionally, in the sealing cap proposed according to this application, there is a gap between the inner surface of the through hole and the outer surface of the mating portion passing through it, through which the communicating chamber is connected to the interior of the liquid storage container in the closed state by gas communication.
[0011] And / or, the docking part is provided with an internal channel having two channel openings opposite to the elastomer, through which the communicating chamber is connected to the interior of the liquid storage container in the closed state via the channel openings.
[0012] Optionally, in the sealing cover proposed according to this application, the mating portion is integrally formed with the top wall of the cover body;
[0013] And / or, the mating part is snap-fitted or threadedly connected to the fixing part of the stop body.
[0014] Optionally, in the closure proposed according to this application, the elastomer is an elastic sheet with an arc-shaped section at its edge region to balance the deformation of the elastomer when the closure is fixed to the container opening.
[0015] Optionally, in the closure proposed according to this application, the elastomer is an elastic sheet with a flat section recessed in its central region in a direction away from the top wall, and a protrusion integrally formed with the inner surface of the top wall is embedded in the space defined by the flat section.
[0016] In the closure proposed according to this application, the widened portion may optionally be disc-shaped or tapered, gradually widening in a direction away from the top wall.
[0017] Furthermore, according to a second aspect of this application, a liquid storage container is also proposed, which includes the sealing cap described above.
[0018] In some embodiments of the sealing cap, the stop body that blocks splashed liquid can provide improved leak-proof performance. Attached Figure Description
[0019] Referring to the accompanying drawings, the above and other features of this application will become apparent, wherein,
[0020] Figure 1 An embodiment of a liquid storage container according to this application is shown, wherein a sealing cap is fixed to the container opening;
[0021] Figure 2 An exploded view of one embodiment of the closure cover according to this application is shown;
[0022] Figure 3 It shows according to Figure 2 A cross-sectional view of the closed cap in its assembled state;
[0023] Figure 4 This was shown separately from another perspective. Figure 2 A three-dimensional view of the closed lid. Detailed Implementation
[0024] The present application will now be described more fully with reference to the accompanying drawings, which illustrate exemplary embodiments thereof. However, the present application may be implemented in various forms and should not be construed as being limited to the embodiments given herein. The foregoing embodiments are intended to make the disclosure herein complete and thorough, so as to more fully convey the scope of protection of the present application to those skilled in the art.
[0025] In this specification, terms such as “comprising” and “including” indicate that, in addition to having the units and steps that are directly and explicitly stated in the specification and claims, the technical solution of this application does not exclude the presence of other units and steps that are not directly or explicitly stated.
[0026] Unless otherwise specified, terms such as “first” and “second” do not indicate the order of units in terms of time, space, size, etc., but are merely used to distinguish between units.
[0027] refer to Figure 1 This illustrates one embodiment of a liquid storage container according to the present application. The liquid storage container 10 includes a sealing cap 100 and a container body 200, wherein the container body 200 has an outlet 210 and a container opening 220, and the sealing cap 100 is screwed onto the container opening 220. The container body 200 is a two-piece structure, i.e., composed of an upper part and a lower part. Alternatively, the container body 200 may be a one-piece structure, i.e., integrally molded.
[0028] It should be noted that the liquid in the reservoir can be water, brake fluid, or any other feasible liquid, and there is no limitation in the embodiments of this application. Furthermore, the reservoir according to this application may have the advantages and features described with respect to the sealing cap 100, and its structure can be referred to accordingly in the following description of the sealing cap.
[0029] Figure 2 An exploded view of a closure cover 100 according to one embodiment is shown; Figure 3 A cross-sectional view of the closure cover in its assembled state is shown; Figure 4 A portion of the closure is shown from another perspective.
[0030] Overall, the closure 100 includes a cover body 110, a stop body 120, and an elastic body 130. The cover body 100 includes a top wall 111 and a side wall 112 projecting therefrom, which together restrict a receiving chamber open on one side. The outer surface of the side wall 112 has an anti-slip structure that can be gripped by a user or tool when the closure 100 is secured to the container opening 220. The inner surface of the side wall 112 has stop portions 117; three stop portions 117 are shown in the figures, distributed circumferentially, which engage with the outer surface of the container opening 220, thereby ensuring a reliable fixation of the closure 100 to the container opening 220.
[0031] The stop body 120 includes a fixing part 121 and a widening part 122. One end of the fixing part 121 is detachably connected to the inner surface of the cover 110, and the other end is connected to the widening part 122, particularly in a fixed connection or integrally formed. In the illustrated embodiment, the stop body 120 is fixed in the central region of the cover 110. The widening part 122 extends circumferentially about a direction parallel to the central axis of the closed cover 100, which passes through the center of the circular cover 110 and is perpendicular to the plane containing the top wall 111. When the closed cover 100 is fixed to the container opening 220 in a closed state, the widening part 122 extends into the container opening 220 and stops the splashing liquid.
[0032] from Figure 2 and Figure 3 It can also be seen that the fixing part 121 of the stop 120 is snapped into the cover 110, that is, snapped into the mating part 115 of the cover 110. Specifically, the fixing part 121 is made of a deformable rigid material (such as plastic), which is snapped into the mating part 115 and a portion of it (i.e., its end) protrudes from the opening 1151 of the mating part 115 for the user to press and thereby disengage the stop 120 from the mating part 115. Here, the mating part 115 can be integrally formed with the top wall 111 of the cover 110, or fixed as a separate component to the inner surface of the top wall 111.
[0033] As an optional implementation, the fixing part 121 of the stop body 120 is threadedly connected to the mating part 115 of the cover body 110 or detachably connected in any other feasible manner.
[0034] Here, the fixing part 121 and the widening part 122 of the stop body 120 may be integrally formed, or the two may be fixedly connected or detachably connected as independent components. No specific limitation is made in this embodiment.
[0035] from Figure 2 and Figure 3It can also be seen that the widened portion 122 is basically conical and gradually widens in the direction away from the top wall 111, wherein the width of the farthest end of the widened portion 122 (which is farthest from the top wall 111 of the cover 110 in the assembled state) should be less than the width of the container opening 220. Here, the cross-section of the widened portion 122 is basically triangular.
[0036] In other embodiments, the widened portion 122 is an umbrella-shaped structure (i.e., an umbrella surface) to stop splashed liquid from entering from below. In other embodiments, the widened portion 122 is a disc-shaped portion extending circumferentially around its own axis.
[0037] It should be noted that the shape of the widened portion 122 is not limited to the embodiments described above, and it may be other structures having an end face for stopping splashed liquid.
[0038] from Figure 2 and Figure 3 It can also be seen that an elastic body 130 is provided on the inner surface of the cover 110. This elastic body is, for example, a rubber sheet and can be inserted into a receiving groove (not shown) on the inner surface of the cover 110, for example, by its edge being inserted into an annular receiving groove on the side wall 112 or the top wall 111. Here, with the closed cover 100 assembled, the stop 120, at least its widened portion 122, is located on the side of the elastic body 130 opposite to the top wall 112, i.e., in… Figure 3 The upper part is located below the elastomer 130 to stop liquid splashing from below. The elastomer 130 covers the inner surface of the top wall 111, and there is a gap between the upper surface of the elastomer 130 and the inner surface of the top wall 111, which together define the communicating chamber 113. The communicating chamber 113 establishes gas communication between the inside and outside of the liquid storage container 10 when the sealing cap 100 is fixed to the container opening 220, that is, gas can flow from the outside of the liquid storage container 10 to its inside or in the opposite direction. In this way, the internal and external gas pressure of the liquid storage container 10 is kept balanced to facilitate the suction of liquid.
[0039] from Figure 3 It can also be seen that the elastomer 130 has an arcuate section 132 at its edge region. The end face of the arcuate section facing the top wall 111 is constructed to fit against the top wall 111, while its end face away from the top wall 111 is not constructed to be flat. In the illustrated embodiment, the arcuate section has multiple protrusions and may also be referred to as a corrugated section. Here, when the sealing cap 100 is fixed to, and especially screwed to, the container opening 220, the elastomer 130 undergoes torsional deformation, which is balanced or offset by the arcuate section 132, thereby ensuring that the elastomer 130 is reliably fixed to the cap 110 and improving the leak-proof performance of the liquid storage container 10.
[0040] Here, the term "arc section" should not be interpreted restrictively, but can be understood in contrast to the flat section, which will be described in more detail below. The term "arc section" should be understood as a section with non-flat portions, which can be either a section with a uniform thickness and an arc-shaped orientation, or a portion with a non-uniform thickness that forms the arc-shaped orientation.
[0041] Combination Figure 3 and Figure 4 The elastomer 130 has a flat section 133 in its central region, which is constructed to sink downwards in a direction away from the top wall 111. The flat section 133 defines a space in which a protrusion 116 extending from the inner surface of the top wall 111 is embedded. This protrusion helps to balance the torsional deformation of the elastomer 130 when the closure 100 is fixed to the container opening 220, preventing torsional deformation from the sides from being transmitted to the central region. In the figures, three protrusions 116 are provided on the inner surface of the top wall 111, arranged circumferentially around the central axis of the closure 100 and spaced apart from each other. Each protrusion 116 has an arcuate structure extending circumferentially. Here, the protrusions 116 may, for example, be integrally formed with the top wall 111.
[0042] As an alternative implementation, a columnar or annular structure may also be integrally formed from the inner surface of the top wall 111, which serves as the protrusion 116 and is embedded in the space defined by the flat section 133.
[0043] It should be noted that the structure of the elastomer 130 is not limited to the embodiment described herein, and modifications may be made accordingly. For example, the elastomer 130 may have only the arcuate section 132; or a combination of the arcuate section 132 and the flat section 133; or it may be constructed entirely flat (i.e., the portion except for the edge for embedding into the receiving groove on the inner surface of the cover is substantially flat).
[0044] Combination Figure 2 and Figure 4 The connecting chamber 113 is in gas communication with the outside of the liquid storage container 10 through a recess 114 on the inner surface of the cover 110. The recess 114 includes two interconnected sections: a first section extending on the inner surface of the top wall 111 and a second section extending on the side wall 112. Specifically, as shown in the figure, the recess 114 is a groove, with its first section extending radially along the top wall 111 and its second section extending to the outer edge of the side wall 112.
[0045] In other embodiments, with the sealing cap 100 fixed to the container opening 220 in a closed state, the communicating chamber 113 is in gas communication with the interior of the liquid storage container 10 through a cut portion on the elastomer 130. The cut portion may be a cut portion without a certain width formed by cutting, or an opening with a certain width formed by dropping material.
[0046] When the fixing part of the stop body 120 is directly fixed to the docking part 115, the cutting part of the elastic body 130 can be a through hole 131, and the docking part 115 passes through the through hole to connect with the fixing part 122 below the elastic body 130. In the closed state where the sealing cap 100 is fixed to the container opening 220, the communicating chamber 113 communicates with the gas inside the liquid storage container 10 through the internal channel of the docking part 115. One opening of the internal channel is located on the side of the elastic body 130 facing the top wall 111, and the other opening is located on the side of the elastic body 130 away from the top wall 111. Figure 3 and Figure 4 As shown, one channel opening 1152 is located above the docking portion 115 to communicate with the gas in the communicating chamber 113, and another channel opening 1152 is located below the docking portion 115 to communicate with the internal gas of the liquid storage container 10. The lower channel opening 1152 can also serve as an opening 1151 for the protrusion of the fixing portion 121 of the stop body 120. Here, the docking portion 115 and the through hole 131 can be gas-sealed, i.e., the elastomer is tightly fitted to the outer surface of the docking portion 115.
[0047] In other embodiments, there is a gap between the inner surface of the through hole 131 and the outer surface of the mating part 115. Through the gap, the communicating chamber 113 is connected to the gas inside the liquid storage container 10 when the sealing cover 100 is fixed to the container opening in a closed state. That is, the gas can circulate between the communicating chamber 113 and the liquid storage container 10.
[0048] In other embodiments, when there is no gap between the docking portion 115 and the through hole 131 of the elastomer and the docking portion 115 is not provided with the internal channel, a cutting portion in the form of a shearing portion is provided in other areas of the elastomer 130, which establishes gas communication between the communicating chamber 113 and the interior of the liquid storage container 10.
[0049] It should be noted that the method for achieving gas communication between the inside and outside of the liquid storage container 10 when the sealing cap 100 is fixed to the container opening 220 in a closed state is not limited to the embodiments described above, and can be modified or combined as needed.
[0050] Regarding the sealing cap according to the embodiment shown in the accompanying drawings, when liquid in the liquid storage container 10 splashes towards the sealing cap 100 due to shaking, the splashed liquid can be stopped by the widened portion 122 of the stop body 120. Compared to a sealing cap without a stop body, where the splashed liquid flows into the communicating chamber and leaks through the recess for gas communication, the sealing cap and liquid storage container according to this embodiment have improved leak-proof performance.
[0051] The embodiments and examples presented herein are provided to illustrate embodiments of this application and its specific applications, thereby enabling those skilled in the art to implement and use this application. However, those skilled in the art should understand that the above description and examples are provided for ease of illustration and example only. The descriptions presented are not intended to cover all aspects of this application or to limit this application to the precise forms disclosed.
Claims
1. A closure cap (100) for closing a container mouth of a liquid storage container, characterized in that The closure cap (100) comprises a cover body (110) and a stop body (120), the cover body comprising a top wall (111) and a side wall (112) protruding from the top wall, the stop body comprising a fixing portion (121) and a widening portion (122), wherein the fixing portion (121) is detachably connected to an inner surface of the cover body (110), the widening portion (122) extends circumferentially around a direction parallel to a central axis of the closure cap, and the widening portion (122) is configured to extend into a container opening to stop liquid splashed therefrom.
2. The closure (100) according to claim 1, characterized in that An elastic body (130) is arranged on the inner surface of the cover body (110), the widening portion (122) is arranged on a side of the elastic body facing away from the top wall (111), and the elastic body (130) and the top wall (111) jointly define a communication chamber (113) for establishing gas communication between the inside and outside of the liquid storage container in a closed state in which the closure cap is fixed to the container opening.
3. The closure (100) according to claim 2, characterized in that The inner surface of the cover body (110) is provided with a recess (114) comprising a first section extending on the top wall (111) and a second section extending on the side wall (112), wherein the recess (114) establishes gas communication between the communication chamber (113) and the outside of the liquid storage container in the closed state.
4. The closure (100) according to claim 2, characterized in that The elastic body (130) is provided with a through hole (131), and a docking portion (115) passes through the through hole (131), one end of the docking portion (115) is connected to the top wall (111), and the other end of the docking portion (115) is detachably connected to the fixing portion (121) of the stop body (120).
5. The closure (100) according to claim 4, characterized in that There is a gap between the inner surface of the through hole (131) and the outer surface of the docking portion (115) passing therethrough, and the gap establishes gas communication between the communication chamber (113) and the inside of the liquid storage container in the closed state. Furthermore, the docking portion (115) is provided with an internal passage having two passage openings opposite to each other with respect to the elastic body (130), and the passage openings establish gas communication between the communication chamber (113) and the inside of the liquid storage container in the closed state.
6. The closure (100) according to claim 4, characterized in that The docking portion (115) is integrally formed with the top wall (111) of the cover body. Furthermore, the docking portion (115) is snap-connected or screw-connected to the fixing portion (121) of the stop body.
7. The closure (100) according to claim 2, characterized in that The elastic body (130) is an elastic sheet provided with an arc-shaped section (132) at an edge region thereof for balancing deformation of the elastic body (130) when the closure cap is fixed to the container opening.
8. The closure (100) according to claim 2, characterized in that The elastic body (130) is an elastic sheet provided with a flat section (133) sunken in a direction away from the top wall (111) at a central region thereof, and a protruding portion (116) integrally formed with an inner surface of the top wall (111) is embedded in a space defined by the flat section.
9. The closure (100) of claim 1, wherein The widening portion (122) is disc-shaped or taper-shaped gradually widened in a direction away from the top wall (111).
10. A liquid storage container (10) characterized by, The closure cap (100) according to any one of claims 1 to 9.