Filter bottle device and filter bottle cap assembly

Abstract

The utility model provides a filter bottle device and a filter bottle cap assembly, the filter bottle cap is detachably connected to a filter bottle, the packing piece is arranged to be capable of translating relative to the filter bottle cap, the restraining piece is connected to the filter bottle cap and used for limiting the downward movement limit position of the packing piece, and the elastic piece is arranged on the packing piece and used for limiting the downward movement limit position of the packing piece. The packing part is arranged between the filter bottle cap and the packing part, the first sealing part and the second sealing part are arranged between the filter bottle cap and the second sealing part of the packing part, and the size of the first sealing part is larger than that of the second sealing part.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a filter bottle device and a filter bottle cover assembly. Background Art

[0002] In the existing filter bottle device, the seal is directly arranged between the filter bottle cover and the filter bottle. In order to ensure the effectiveness of the seal, the filter bottle cover and the filter bottle need to be tightly connected to each other, which makes the connection and disassembly of the two very difficult, especially when the two are connected to each other through a threaded structure, they need to be tightened vigorously, and when disassembling, they also need a large force to unscrew.

[0003] The existing sealing arrangement of the filter bottle device includes two types: pressure sealing and side sealing. Figure 1 As shown, the seal 31P is set in a compression seal mode, and the seal 32P is set in a side seal mode. It can be understood that if the compression seal mode is used for sealing, the filter bottle cover 2P and the filter bottle 1P need to be tightened as much as possible to flatten the seal 31P, so as to achieve reliable sealing, which will inevitably make the filter bottle cover 2P and the filter bottle 1P difficult to unscrew when disassembling. Moreover, since the diameter of the circular ring surrounded by the seal 31P is not less than the inner diameter of the filter bottle 1P, that is, the size of the seal 31P is relatively large, when the filter bottle cover 2P and the filter bottle 1P rotate relative to each other, the friction caused by the seal 31P cannot be ignored, which will further hinder the tightening process and unscrewing process of the filter bottle cover 2P and the filter bottle 1P. Correspondingly, if sealing is performed by side sealing, although the tightening degree of the filter bottle cover 2P and the filter bottle 1P can be slightly reduced, the seal 32P also has a larger size, which will also cause greater friction, thereby causing greater obstacles to the tightening and unscrewing processes of the filter bottle cover 2P and the filter bottle 1P.

[0004] In addition, since the filter bottle 1P and the filter bottle cover 2P are usually made of plastic material, and the filter bottle cover 2P is not a regular cylindrical shape, it is impossible to ensure a high roundness. Since the bottle wall of the filter bottle 1P lacks lateral (radial) support from the inside of the filter bottle 1P, the filter bottle 1P and / or the filter bottle cover 2P are easily deformed during the tightening process. This forces the manufacturer of the filter bottle device to select a seal with a large compression amount when selecting the seal, in order to make up for the sealing problem caused by the deformation of the plastic part. However, when replacing the filter element of the filter bottle device, the seal also needs to be replaced together, because the large compression amount makes it difficult for the seal to rebound. If the seal continues to be used, the effectiveness and reliability of the seal cannot be guaranteed.

[0005] Moreover, during the tightening process of the filter bottle cover 2P and the filter bottle 1P, they move relative to each other (for example, one moves clockwise and the other moves counterclockwise). Neither the seal 31P nor the seal 32P can rotate with the filter bottle cover 2P or the filter bottle 1P, which causes the seal to be easily twisted after the filter bottle cover 2P and the filter bottle 1P are tightened, resulting in seal failure and further water leakage.

[0006] The existing filter bottle device has a fixed internal volume, and there is also a problem that the filter bottle is easily damaged due to the water hammer effect. Moreover, in the winter, the water inside the filter bottle device installed outdoors will freeze and expand in volume, which can easily cause the filter bottle to rupture. Summary of the invention

[0007] The main advantage of the utility model is that it provides a filter bottle device, which includes a sealing member that can be translated relative to the filter bottle cover. The internal volume of the filter bottle device is changed through the translation of the sealing member, thereby preventing the filter bottle device from being damaged by the water hammer effect and preventing the filter bottle device from being broken due to the freezing of water inside it.

[0008] Another advantage of the present invention is that it provides a filter bottle device, which includes a sealing member that can rotate relative to the filter bottle cover, and is sealed with the filter bottle through the sealing member, so as to replace the traditional sealing method of directly setting a sealing member between the filter bottle cover and the filter bottle, and in the process of screwing and unscrewing the filter bottle cover and the filter bottle, the sealing member basically does not rotate relative to the filter bottle, which can greatly reduce the difficulty of screwing and unscrewing the filter bottle cover and the filter bottle. In other words, the present invention creatively proposes to separate the "fixing" and "sealing" between the filter bottle cover and the filter bottle as much as possible, and use the sealing member to replace the filter bottle cover to bear most of the "sealing" responsibility, so that the filter bottle cover and the filter bottle are easier to screw and unscrew.

[0009] Another advantage of the present invention is that it provides a filter bottle device, wherein the sealing member can provide transverse (radial) support to the bottle wall of the filter bottle from the inside of the filter bottle, the structural stability is stronger, and the sealing member is easier to form and maintain a higher roundness than the filter bottle cover, so that a seal with a smaller compression amount than the traditional sealing method can be selected between the sealing member and the filter bottle, thereby enabling the sealing member to be used multiple times without having to replace the seal every time the filter element is replaced. Moreover, the seal with a smaller compression amount also makes the relative translation between the sealing member and the filter bottle less obstructed, which is conducive to further reducing the difficulty of screwing and unscrewing the filter bottle cover and the filter bottle.

[0010] Another advantage of the present invention is that it provides a filter bottle device, wherein during the process of screwing together and unscrewing the filter bottle cover and the filter bottle, since the sealing member may basically not rotate relative to the filter bottle, the seal between the sealing member and the filter bottle is less likely to be twisted, which can reduce the risk of sealing failure and water leakage.

[0011] Accordingly, according to an embodiment of the present invention, a filter bottle device having at least one of the aforementioned advantages includes:

[0012] Filter bottle;

[0013] A filter bottle cover, detachably connected to the filter bottle;

[0014] A sealing member, configured to be able to translate relative to the filter bottle cover;

[0015] A restraining member, connected to the filter bottle cover, for limiting the downward movement limit position of the sealing member;

[0016] At least one elastic member is disposed between the filter bottle cover and the sealing member;

[0017] A first sealing member disposed at a first sealing portion of the packing member; and

[0018] The second seal is arranged between the filter bottle cover and the second seal portion of the sealing member, wherein the size of the first seal is larger than the size of the second seal.

[0019] In one embodiment of the present invention, the first sealing member is disposed between the filter bottle cover and the first sealing portion of the sealing member, and the filter bottle cover is sealingly connected to the filter bottle.

[0020] In an embodiment of the present invention, the elastic member is a spring or a flexible elastic member.

[0021] In one embodiment of the present invention, the sealing member is configured to be rotatable relative to the filter bottle cover, and the first sealing member is disposed between the filter bottle and the first sealing portion of the sealing member.

[0022] In one embodiment of the utility model, the filter bottle cover includes a limiting portion for limiting the upper limit position of the sealing member. When the sealing member is at the upper limit position, the limiting portion abuts against the abutting portion of the sealing member, wherein H2≤H1, H2 is the height difference between the limiting portion of the filter bottle cover and the abutting portion of the sealing member, wherein,

[0023] When the filter bottle device includes only one first sealing member, H1 is the height difference between the edge of the filter bottle opening and the first sealing member;

[0024] When the filter bottle device includes at least two first sealing members, H1 is the height difference between the edge of the filter bottle mouth and the first sealing member farthest from the edge of the filter bottle mouth.

[0025] In one embodiment of the utility model, the filter bottle cover includes a limiting portion for limiting the upper limit position of the sealing member. When the sealing member is at the upper limit position, the limiting portion abuts against the abutting portion of the sealing member, wherein H2≤H1, H2 is the height difference between the limiting portion of the filter bottle cover and the abutting portion of the sealing member, wherein,

[0026] When the filter bottle device includes only one first sealing member, H1 is the height difference between the edge of the filter bottle opening and the first sealing member;

[0027] When the filter bottle device includes at least two first sealing members, H1 is the height difference between the edge of the filter bottle mouth and the first sealing member closest to the edge of the filter bottle mouth.

[0028] In one embodiment of the utility model, the elastic member includes a first elastic member and a second elastic member, wherein the friction coefficient between the first elastic member and the sealing member is smaller than the friction coefficient between the second elastic member and the sealing member, and when the sealing member is located at the lower limit position, the second elastic member is in a free state.

[0029] In one embodiment of the present invention, the filter bottle device also includes a sliding friction plate, wherein the sliding friction plate is arranged between the first elastic member and the sealing member, and the friction coefficient between the sliding friction plate and the sealing member is smaller than the friction coefficient between the first elastic member and the sealing member.

[0030] In an embodiment of the present invention, the first elastic member is a spring, and the second elastic member is a flexible elastic member.

[0031] In one embodiment of the present invention, the filter bottle cover includes an extended wall, the sealing member is provided with a through hole formed in the second sealing portion, and the restraining member includes a fixing portion and a restraining portion extending from the fixing portion, wherein the extended wall is inserted into the through hole of the sealing member, the second sealing member is arranged between the second sealing portion and the extended wall, the fixing portion is connected to the extended wall, and the restraining portion is used to restrain the sealing member, wherein the extended wall serves as a rotation axis for relative rotation between the filter bottle cover and the sealing member.

[0032] In one embodiment of the present invention, the filter bottle cover further comprises a flow-through portion having a fluid channel, wherein the extended wall is constructed as a part of an outer peripheral wall of the flow-through portion.

[0033] In one embodiment of the present invention, the second sealing portion of the sealing member is constrained between the filter bottle cover and the constraining portion of the constraining member.

[0034] In one embodiment of the present invention, the fixing portion of the restraining member is disposed on the extension wall.

[0035] In one embodiment of the utility model, the fluid channel includes a first fluid channel and a second fluid channel, wherein the first fluid channel is formed between the outer peripheral wall of the circulation portion and the inner peripheral wall of the circulation portion, and the second fluid channel is formed on the inner side of the inner peripheral wall, wherein the restraint is provided with a connecting channel, and the connecting channel is formed in the fixed portion, wherein the connecting channel is connected to the first fluid channel.

[0036] In one embodiment of the present invention, the sealing member is configured to radially support the bottle wall of the filter bottle from the inside of the filter bottle.

[0037] According to another aspect of the present invention, the present invention provides a filter bottle cover assembly, comprising:

[0038] A filter bottle cap, used for being detachably connected to the filter bottle;

[0039] A sealing member, configured to be able to translate relative to the filter bottle cover;

[0040] A restraining member connected to the filter bottle cover to limit the downward movement limit position of the sealing member; and

[0041] At least one elastic member is disposed between the filter bottle cover and the sealing member;

[0042] The sealing member includes a first sealing part and a second sealing part, wherein a first sealing part is suitable for being arranged between the first sealing part and the filter bottle, and a second sealing part is arranged between the second sealing part and the filter bottle cover, wherein the size of the first sealing part is larger than the size of the second sealing part.

[0043] In one embodiment of the present invention, the filter bottle cover assembly further includes a first sealing member, wherein the first sealing member is disposed between the filter bottle cover and the first sealing portion of the sealing member.

[0044] In one embodiment of the utility model, the sealing member is configured to be rotatable relative to the filter bottle cover, and the elastic member includes a first elastic member and a second elastic member, wherein the friction coefficient between the first elastic member and the sealing member is smaller than the friction coefficient between the second elastic member and the sealing member, and when the sealing member is located at the lower limit position, the second elastic member is in a free state, wherein the first elastic member is a spring, and the second elastic member is a flexible elastic member.

[0045] The above and other advantages of the present invention will be fully reflected in combination with the following description and the accompanying drawings.

[0046] The above and other advantages and features of the present invention are fully reflected in the following detailed description of the present invention and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a cross-sectional view of an existing filter bottle device.

[0048] Figure 2 It is a stereoscopic diagram of a filter bottle device according to an embodiment of the utility model.

[0049] Figure 3 It is a cross-sectional view of the filter bottle device according to an embodiment of the utility model in a normal use state.

[0050] Figure 4 It is a stereoscopic view of the filter bottle cover of the filter bottle device according to an embodiment of the utility model.

[0051] Figure 5A It is a stereoscopic view of the sealing member of the filter bottle device according to an embodiment of the utility model.

[0052] Figure 5B It is a cross-sectional view of the sealing member of the filter bottle device according to an embodiment of the utility model.

[0053] Figure 6 It is a stereoscopic view of the restraining member of the filter bottle device according to an embodiment of the utility model.

[0054] Figure 7 It is a cross-sectional view of the filter bottle device according to an embodiment of the utility model in a water pressure-free state after initial assembly.

[0055] Figure 8 It is a cross-sectional view of the filter bottle device according to an embodiment of the utility model in a state of increased water pressure or freezing.

[0056] Fig. 9 It is a cross-sectional view of the filter bottle device according to an embodiment of the utility model when the sealing member is located at the upper limit position.

[0057] Fig.10 It is a cross-sectional view of a filter bottle device according to another embodiment of the utility model.

[0058] Fig.11 It is a cross-sectional view of a filter bottle device according to another embodiment of the utility model. DETAILED DESCRIPTION

[0059] The following description is provided to enable those skilled in the art to implement the present invention. Other obvious replacements, modifications and variations may occur to those skilled in the art. Therefore, the scope of protection of the present invention should not be limited to the exemplary embodiments described herein.

[0060] Those skilled in the art should understand that, unless otherwise specified herein, the terms "one" and "an" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple.

[0061] Those skilled in the art should understand that, unless otherwise specified herein, the directions or positions referred to by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the directions or positions shown in the drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the devices or elements involved must have a specific direction or position. Therefore, the above terms should not be understood as limiting the present invention.

[0062] Refer to the attached drawings of this utility model specification Figures 2 to 6 As shown, a filter bottle device according to an embodiment of the utility model is explained. The filter bottle device includes a filter bottle 1, a filter bottle cover 2, a sealing member 3, a first sealing member 51 and a second sealing member 52, wherein the filter bottle cover 2 is detachably connected to the filter bottle 1, the sealing member 3 is configured to be rotatable relative to the filter bottle cover 2, and the filter bottle device further includes a restraining member 4, the restraining member 4 is connected to the filter bottle cover 2, and is used to restrain the sealing member 3 to prevent the sealing member 3 from detaching from the filter bottle cover 2, the first sealing member 51 is arranged between the filter bottle 1 and the first sealing portion 31 of the sealing member 3, and the second sealing member 52 is arranged between the filter bottle cover 2 and the second sealing portion 32 of the sealing member 3, wherein the size of the first sealing member 51 is greater than the size of the second sealing member 52. It is worth mentioning that "the size of the first sealing member 51 is greater than the size of the second sealing member 52" means that the circumference (or radius, diameter) of the circular ring surrounded by the first sealing member 51 is greater than the circumference (or radius, diameter) of the circular ring surrounded by the second sealing member 52.

[0063] In order to more prominently reflect the advantages of the utility model, the utility model takes the filter bottle cover 2 and the filter bottle 1 as an example of a rotatable detachable connection method, such as the filter bottle cover 2 and the filter bottle 1 are rotatably detachably connected through a threaded structure, or are rotatably detachably connected through a rotating buckle structure. It can be understood that the filter bottle cover 2 and the filter bottle 1 can also be detachably connected by a clamp. Specifically, during the screwing and unscrewing process of the filter bottle cover 2 and the filter bottle 1, the filter bottle cover 2 rotates relative to the filter bottle 1. Since the size of the first seal 51 is larger than the size of the second seal 52, the first seal 51 has a greater resistance to rotation than the second seal 52, so that the filter bottle cover 2 is basically unable to drive the packing member 3 to rotate, so that the packing member 3 basically does not rotate relative to the filter bottle 1, and only performs translational motion relative to the filter bottle 1, which basically eliminates the resistance of the large-sized seal to the relative rotation of the filter bottle cover 2 and the filter bottle 1, and can greatly reduce the difficulty of screwing and unscrewing the filter bottle cover 2 and the filter bottle 1. When the two are screwed together, there is no need to tighten them vigorously, and they only need to be rotated to a preset position to ensure that the packing member 3 is inserted into the filter bottle 1 to a certain depth, and the relative rotation of the two will not be hindered by the large-sized seal, and it is easy to rotate. Correspondingly, when the two are unscrewed, it is also relatively easy. In other words, the present invention creatively proposes to separate the "fixing" and "sealing" between the filter bottle cover 2 and the filter bottle 1 as much as possible, and use the sealing member 3 to replace the filter bottle cover 2 to bear most of the "sealing" responsibility, so that the filter bottle cover 2 and the filter bottle 1 are easier to screw on and off. In addition, because the sealing member 3 can basically not rotate relative to the filter bottle 1, the first sealing member 51 is less likely to be twisted, which can reduce the risk of sealing failure and water leakage.

[0064] It can be understood that the sealing member 3 is configured to provide lateral (radial) support to the bottle wall of the filter bottle 1 from the inside of the filter bottle 1, such as by transmitting the force through the first sealing member 51, which not only makes the structural stability stronger, but also helps to ensure the effectiveness of the seal. Moreover, the sealing member 3 is easier to form and maintain a higher roundness than the filter bottle cover 2, so that a seal with a smaller compression amount than the traditional sealing method can be selected between the sealing member 3 and the filter bottle 1, thereby allowing the first sealing member 51 to be used multiple times without having to replace the first sealing member 51 every time the filter element is replaced. Moreover, the first sealing member 51 with a smaller compression amount also makes the sealing member 3 and the filter bottle 1 less obstructed when relative translation occurs, which helps to further reduce the difficulty of screwing and unscrewing the filter bottle cover 2 and the filter bottle 1.

[0065] like Figure 3 As shown, the filter bottle cover 2 includes a circulation portion 21, and the circulation portion 21 has a fluid channel 210 for the inflow or outflow of fluid. The fluid channel 210 includes a first fluid channel 2101 and a second fluid channel 2102, wherein one of the first fluid channel 2101 and the second fluid channel 2102 is used for the inflow of raw water, and the other is used for the outflow of purified water. When the first fluid channel 2101 is used as the inflow channel of raw water, the second fluid channel 2102 is used as the outflow channel of purified water; when the first fluid channel 2101 is used as the outflow channel of purified water, the second fluid channel 2102 is used as the inflow channel of raw water. The first fluid channel 2101 is formed between the outer peripheral wall 211 of the circulation portion 21 and the inner peripheral wall 212 of the circulation portion 21, and the second fluid channel 2102 is formed on the inner side of the inner peripheral wall 212.

[0066] like Figures 3 to 5B As shown, specifically, the filter bottle cover 2 also includes an extension wall 22, and the extension wall 22 is inserted into the through hole 30 of the sealing member 3, wherein the through hole 30 is formed in the second sealing portion 32 of the sealing member 3, and the second sealing member 52 is arranged between the second sealing portion 32 of the sealing member 3 and the extension wall 22. The first fluid channel 2101 and the second fluid channel 2102 are both arranged on the inner side of the through hole 30 of the sealing member 3. When the filter bottle cover 2 and the sealing member 3 rotate relative to each other, the extension wall 22 can be regarded as a rotation axis. It is worth mentioning that the extension direction of the central axis of the rotation axis is the axial direction, and the above-mentioned "transverse (radial)" refers to the direction perpendicular to the axial direction.

[0067] like Figures 3 to 6 As shown, specifically, the restraining member 4 includes a fixing portion 41 and a restraining portion 42 , wherein the restraining portion 42 extends from the fixing portion 41 , the fixing portion 41 is connected to the extension wall 22 , and the restraining portion 42 is used to restrain the sealing member 3 .

[0068] like Figures 3 to 6As shown, preferably, the peripheral wall 211 of the circulation part 21 is further extended along the axial direction to form the extension wall 22. In other words, the extension wall 22 is constructed as a part of the peripheral wall 211. The second sealing part 32 of the sealing member 3 is constrained between the filter bottle cover 2 and the constraint part 42 of the constraint member 4. The constraint member 4 is provided with a communication channel 40, wherein the communication channel 40 is formed in the fixing part 41, wherein the fixing part 41 is connected to the extension wall 22, so that the communication channel 40 is connected to the first fluid channel 2101. It can be understood that when the fixing part 41 is set on the extension wall 22, there is no need to seal between the fixing part 41 and the extension wall 22, which is convenient for the connection between the two. Preferably, the fixing part 41 of the constraint member 4 is fixed to the extension wall 22 by screws. It can be understood that the connection structure between the fixing part 41 and the extension wall 22 includes but is not limited to screw fixing, threaded connection, snap connection or interference connection, etc., and the two can even be connected by additional connecting parts.

[0069] Furthermore, if Figure 3 As shown, the first fluid channel 2101 is used as the inflow channel of raw water, and the second fluid channel 2102 is used as the outflow channel of purified water. The filter bottle device also includes a filter element, wherein the purified water outlet of the filter element is sealingly connected to the inner peripheral wall 212 of the circulation part 21. Raw water flows in from the first fluid channel 2101, flows through the connecting channel 40 of the constraint 4, further flows along the constraint 4 and the bottom of the sealing member 3, and is sealed by the first sealing member 51 and the second sealing member 52, and then flows into the filter element. The purified water purified by the filter element is discharged from the purified water outlet and finally flows out through the second fluid channel 2102.

[0070] In summary, the technical solution based on the core concept of the utility model has been explained, which is not only applicable to Figure 3 The dual-port filter bottle device shown, i.e., the circulation portion 21 only includes two types of ports, the first fluid channel 2101 and the second fluid channel 2102, is also applicable to a three-port filter bottle device, i.e., the fluid channel 210 of the circulation portion 21 also includes a third fluid channel for sewage discharge. In other words, the core concept of the utility model is not limited by the type and number of the fluid channels 210 of the circulation portion 21.

[0071] According to another aspect of the utility model, the utility model further provides a filter bottle cover assembly, which includes a filter bottle cover 2, a sealing member 3 and a restraining member 4, wherein the filter bottle cover 2 is used to be detachably connected to the filter bottle 1, the sealing member 3 is configured to be able to rotate relative to the filter bottle cover 2, and the restraining member 4 is connected to the filter bottle cover 2, and is used to restrain the sealing member 3 to prevent the sealing member 3 from detaching from the filter bottle cover 2, wherein the sealing member 3 includes a first sealing portion 31 and a second sealing portion 32, wherein a first sealing member 51 is suitable for being arranged between the first sealing portion 31 and the filter bottle 1, and a second sealing member 52 is arranged between the second sealing portion 32 and the filter bottle cover 2, wherein the size of the first sealing member 51 is larger than the size of the second sealing member 52.

[0072] Refer to the attached drawings of this utility model specification Figure 3 and Figures 7 to 9 In the embodiment of the utility model, the filter bottle device further comprises at least one elastic member 8, wherein the elastic member 8 is arranged between the filter bottle cover 2 and the sealing member 3, and the sealing member 3 is arranged to be able to translate relative to the filter bottle cover 2. In other words, the sealing member 3 is arranged to be able to translate in the direction close to the filter bottle cover 2 to further compress the elastic member 8, and the sealing member 3 is arranged to be able to translate in the direction away from the filter bottle cover 2 under the action of the elastic member 8, wherein the translation of the sealing member 3 in the direction away from the filter bottle cover 2 is constrained by the constraint member 4, thereby limiting the downward limit position of the sealing member 3 to prevent the sealing member 3 from being separated from the filter bottle cover 2.

[0073] During the screw connection process between the filter bottle cap 2 and the filter bottle 1, the elastic member 8 can exert pressure on the sealing member 3, thereby facilitating the sealing member 3 to be pressed into the filter bottle 1 to a certain depth, as shown in the attached figure. Figure 7 As shown, the filter bottle device is in a water pressure-free state after initial assembly, the filter bottle cover 2 has been rotated to the preset position, and the sealing member 3 is inserted into the filter bottle 1 to a certain depth.

[0074] When the filter bottle device is in normal use, as shown in the attached Figure 3 As shown, there is a certain water pressure in the filter bottle device. Under the action of the water pressure, the sealing member 3 translates a certain distance toward the filter bottle cover 2 to compress the elastic member 8 so that the pressure of the elastic member 8 on the sealing member 3 is balanced with the water pressure.

[0075] When the water in the filter bottle device freezes or the water pressure increases, as shown in the attached Figure 8As shown, the elastic member 8 is further compressed, and the sealing member 3 further translates toward the filter bottle cover 2, so that the internal volume of the filter bottle device increases, thereby preventing the filter bottle device from being damaged by the water hammer effect, and preventing the filter bottle device from being ruptured due to volume expansion caused by the freezing of water inside the filter bottle.

[0076] Continue to refer to the attached Figure 3 and attached Figure 7 To Attachment Fig. 9 The filter bottle cover 2 further includes a limiting portion 23, which is used to limit the translation of the sealing member 3 toward the filter bottle cover 2 to define the upper limit position of the sealing member 3. When the sealing member 3 translates (i.e. moves upward) toward the filter bottle cover 2 to the upper limit position, the sealing member 3 is resisted by the limiting portion 23 and is blocked from further upward movement. At this time, as shown in the attached Fig. 9 As shown, the limiting portion 23 abuts against the abutting portion 33 of the sealing member 3. Specifically, the limiting portion 23 extends from the inner top surface 201 of the filter bottle cover 2 in a direction away from the inner top surface 201.

[0077] In order to ensure that when the sealing member 3 moves up to the upper limit position, the first sealing member 51 can still form a seal between the filter bottle 1 and the first sealing portion 31 of the sealing member 3, after the filter bottle cover 2 and the filter bottle 1 are assembled, H2≤H1, wherein H2 is the height difference between the limiting portion 23 of the filter bottle cover 2 and the abutting portion 33 of the sealing member 3, and H1 is the height difference between the bottle mouth edge 101 of the filter bottle 1 and the first sealing member 51 (when the filter bottle device includes only one first sealing member 51). When the filter bottle device includes at least two first sealing members 51, in order to ensure that at least one first sealing member 51 can still form a seal between the filter bottle 1 and the first sealing portion 31 of the sealing member 3, H1 is the height difference between the bottle mouth edge 101 of the filter bottle 1 and the first sealing member 51 farthest from the bottle mouth edge 101. In some embodiments, in order to ensure that all the first sealing members 51 can still form a seal between the filter bottle 1 and the first sealing portion 31 of the sealing member 3 to maintain the original sealing performance, H1 is the height difference between the bottle mouth edge 101 of the filter bottle 1 and the first sealing member 51 closest to the bottle mouth edge 101. It is worth mentioning that not only in the attached Figure 7 When the filter bottle device is in the water pressure-free state after initial assembly, H2≤H1. Figure 3 , Attachment Figure 8 and attached Fig. 9 In the state of the filter bottle device shown, H2≤H1 is satisfied, that is, in any non-abnormal state after the filter bottle cover 2 and the filter bottle 1 are assembled, H2≤H1 is satisfied.

[0078] It can be understood that the elastic member 8 can be implemented as a spring and / or a flexible elastic member (for example, a rubber elastic member, a silicone elastic member, etc.). If only a spring is provided as the elastic member 8, due to the size limitation of the filter bottle device, only a small-sized spring can be selected, and the cost of a small-sized spring that can meet the balanced water pressure requirement (provide a sufficiently strong force) is high, and it is difficult to control the overall manufacturing cost of the filter bottle device. If only a flexible elastic member is provided as the elastic member 8, although the cost can be reduced, during the process of screwing together and unscrewing the filter bottle cover 2 and the filter bottle 1, the sliding friction between the flexible elastic member and the filter bottle cover 2 and the sealing member 3 is relatively large, which will cause a large obstacle to the screwing together and unscrewing of the filter bottle cover 2 and the filter bottle 1, and it is impossible to achieve easy screwing and unscrewing.

[0079] Preferably, as attached Figure 3 and attached Figure 7 To Attachment Fig. 9 As shown, the elastic member 8 includes a first elastic member 81 and a second elastic member 82, wherein the friction coefficient between the first elastic member 81 and the sealing member 3 is less than the friction coefficient between the second elastic member 82 and the sealing member 3. When the sealing member 3 moves downward to the lower limit position of the sealing member 3 under the action of the first elastic member 81, the second elastic member 82 is in a free state, that is, the second elastic member 82 is not compressed by the filter bottle cover 2 and the sealing member 3. During the screwing and unscrewing process of the filter bottle cover 2 and the filter bottle 1, the first elastic member 81 can ensure that the second elastic member 82 is in a free state, so as to prevent the second elastic member 82 from causing a large frictional force obstruction to the screwing and unscrewing process of the filter bottle cover 2 and the filter bottle 1. In other words, during the process of the packing member 3 being pressed into the filter bottle 1, the first elastic member 81 applies pressure to the packing member 3 to eliminate the friction caused by the second elastic member 82. When the filter bottle cover 2 and the filter bottle 1 need to be unscrewed, the operation is usually performed after the pressure is released. At this time, the packing member 3 has been moved down to the lower limit position of the packing member 3 under the action of the first elastic member 81, and the second elastic member 82 has been restored to a free state. Therefore, during the process of screwing and unscrewing the filter bottle cover 2 and the filter bottle 1, the small friction caused by the first elastic member 81 will basically not cause the packing member 3 to rotate relative to the filter bottle 1, and the difficulty of screwing and unscrewing the filter bottle cover 2 and the filter bottle 1 can still be greatly reduced. More preferably, the first elastic member 81 is implemented as a spring, and the second elastic member 82 is implemented as a flexible elastic member (for example, a rubber elastic member, a silicone elastic member, etc.).

[0080] In order to further reduce the friction force that may be generated between the first elastic member 81 and the sealing member 3, the filter bottle device also includes a sliding friction plate 83, wherein the sliding friction plate 83 is arranged between the first elastic member 81 and the sealing member 3, and the friction coefficient between the sliding friction plate 83 and the sealing member 3 is smaller than the friction coefficient between the first elastic member 81 and the sealing member 3.

[0081] Refer to the attached drawings of this utility model specification Fig.10 and Fig.11 In another embodiment of the utility model, it is based on the core concept that the internal volume of the filter bottle device is changed by the translation of the sealing member 3 relative to the filter bottle cover 2, and the core concept is applied to the filter bottle device in which the filter bottle cover and the filter bottle are directly sealed. The filter bottle device includes a filter bottle 1, a filter bottle cover 2, a sealing member 3, a restraining member 4, a first sealing member 51, a second sealing member 52 and an elastic member 8, wherein the filter bottle cover 2 is detachably sealed and connected to the filter bottle 1, the sealing member 3 is configured to be able to translate relative to the filter bottle cover 2, the restraining member 4 is connected to the filter bottle cover 2, and is used to restrain the sealing member 3 to limit the downward movement limit position of the sealing member 3, the first sealing member 51 is arranged between the filter bottle cover 2 and the first sealing portion 31 of the sealing member 3, the second sealing member 52 is arranged between the filter bottle cover 2 and the second sealing portion 32 of the sealing member 3, the size of the first sealing member 51 is larger than the size of the second sealing member 52, and the elastic member 8 is arranged between the filter bottle cover 2 and the sealing member 3. In other words, in the Fig.10 and attached Fig.11 In the illustrated embodiment, the filter bottle cover 2 is sealed to the filter bottle 1, and the first sealing member 51 is no longer arranged between the filter bottle 1 and the first sealing portion 31 of the sealing member 3, but is arranged between the filter bottle cover 2 and the first sealing portion 31 of the sealing member 3. Specifically, the elastic member 8 can be implemented as a spring and / or a flexible elastic member (for example, a rubber elastic member, a silicone elastic member, etc.).

[0082] In summary, the utility model provides a filter bottle device, comprising: a filter bottle 1; a filter bottle cover 2, detachably connected to the filter bottle 1; a sealing member 3, configured to be able to translate relative to the filter bottle cover 2; a constraint member 4, connected to the filter bottle cover 2, for limiting the downward limit position of the sealing member 3; at least one elastic member 8, arranged between the filter bottle cover 2 and the sealing member 3; a first sealing member 51, arranged in the first sealing portion 31 of the sealing member 3; and a second sealing member 52, arranged between the filter bottle cover 2 and the second sealing portion 32 of the sealing member 3, wherein the size of the first sealing member 51 is larger than the size of the second sealing member 52.

[0083] According to another aspect of the utility model, the utility model provides a filter bottle cover assembly, comprising: a filter bottle cover 2, which is used to be detachably connected to the filter bottle 1; a sealing member 3, which is configured to be able to translate relative to the filter bottle cover 2; a restraining member 4, which is connected to the filter bottle cover 2, to limit the downward limit position of the sealing member 3; and at least one elastic member 8, which is arranged between the filter bottle cover 2 and the sealing member 3; wherein the sealing member 3 includes a first sealing portion 31 and a second sealing portion 32, wherein the first sealing portion 31 is suitable for setting a first sealing member 51, and a second sealing member 52 is arranged between the second sealing portion 32 and the filter bottle cover 2, wherein the size of the first sealing member 51 is larger than the size of the second sealing member 52.

[0084] Those skilled in the art should understand that the above description and the embodiments shown in the drawings are only for illustrative explanation of the present invention, rather than for limiting the present invention. All equivalent implementations, modifications and improvements within the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter bottle device, characterized in that: include: Filter bottle; A filter bottle cover, detachably connected to the filter bottle; A sealing member, configured to be able to translate relative to the filter bottle cover; A restraining member, connected to the filter bottle cover, for limiting the downward movement limit position of the sealing member; At least one elastic member is disposed between the filter bottle cover and the sealing member; A first sealing member is disposed at a first sealing portion of the sealing member; and The second seal is arranged between the filter bottle cover and the second seal portion of the sealing member, wherein the size of the first seal is larger than the size of the second seal.

2. The filter bottle device according to claim 1, characterized in that: The first sealing member is disposed between the filter bottle cover and the first sealing portion of the sealing member, and the filter bottle cover is sealingly connected to the filter bottle.

3. The filter bottle device according to claim 1, characterized in that: The elastic member is a spring or a flexible elastic member.

4. The filter bottle device according to claim 1, characterized in that: The sealing member is configured to be rotatable relative to the filter bottle cover, and the first sealing member is disposed between the filter bottle and the first sealing portion of the sealing member.

5. The filter bottle device according to claim 4, characterized in that: The filter bottle cover includes a limiting portion for limiting the upper limit position of the sealing member. When the sealing member is at the upper limit position, the limiting portion abuts against the abutting portion of the sealing member, wherein H2≤H1, H2 is the height difference between the limiting portion of the filter bottle cover and the abutting portion of the sealing member, wherein, When the filter bottle device includes only one first sealing member, H1 is the height difference between the edge of the filter bottle opening and the first sealing member; When the filter bottle device includes at least two first sealing members, H1 is the height difference between the edge of the filter bottle mouth and the first sealing member farthest from the edge of the filter bottle mouth.

6. The filter bottle device according to claim 4, characterized in that: The filter bottle cover includes a limiting portion for limiting the upper limit position of the sealing member. When the sealing member is at the upper limit position, the limiting portion abuts against the abutting portion of the sealing member, wherein H2≤H1, H2 is the height difference between the limiting portion of the filter bottle cover and the abutting portion of the sealing member, wherein, When the filter bottle device includes only one first sealing member, H1 is the height difference between the edge of the filter bottle opening and the first sealing member; When the filter bottle device includes at least two first sealing members, H1 is the height difference between the edge of the filter bottle mouth and the first sealing member closest to the edge of the filter bottle mouth.

7. The filter bottle device according to claim 4, characterized in that: The elastic member includes a first elastic member and a second elastic member, wherein the friction coefficient between the first elastic member and the sealing member is smaller than the friction coefficient between the second elastic member and the sealing member, and when the sealing member is located at the lower limit position, the second elastic member is in a free state.

8. The filter bottle device according to claim 7, characterized in that: It also includes a sliding friction plate, wherein the sliding friction plate is arranged between the first elastic member and the sealing member, and the friction coefficient between the sliding friction plate and the sealing member is smaller than the friction coefficient between the first elastic member and the sealing member.

9. The filter bottle device according to claim 7, characterized in that: The first elastic member is a spring, and the second elastic member is a flexible elastic member.

10. The filter bottle device according to claim 4, characterized in that: The filter bottle cover includes an extended wall, the sealing member is provided with a through hole formed in the second sealing portion, the restraining member includes a fixing portion and a restraining portion extending from the fixing portion, wherein the extended wall is inserted into the through hole of the sealing member, the second sealing member is arranged between the second sealing portion and the extended wall, the fixing portion is connected to the extended wall, and the restraining portion is used to restrain the sealing member, wherein the extended wall serves as a rotation axis for relative rotation between the filter bottle cover and the sealing member.

11. The filter bottle device according to claim 10, characterized in that: The filter bottle cover also includes a flow-through portion having a fluid channel, wherein the extended wall is configured as a portion of an outer peripheral wall of the flow-through portion.

12. The filter bottle device according to claim 11, characterized in that: The second sealing portion of the sealing member is constrained between the filter bottle cover and the constraining portion of the constraining member.

13. The filter bottle device according to claim 12, characterized in that: The fixing portion of the restraining member is fixed to the extension wall by means of screws.

14. The filter bottle device according to any one of claims 11 to 13, characterized in that: The fluid channel includes a first fluid channel and a second fluid channel, wherein the first fluid channel is formed between the outer peripheral wall of the circulation portion and the inner peripheral wall of the circulation portion, and the second fluid channel is formed on the inner side of the inner peripheral wall, wherein the restraint is provided with a connecting channel, and the connecting channel is formed in the fixing portion, wherein the connecting channel is connected to the first fluid channel.

15. The filter bottle device according to any one of claims 4 to 13, characterized in that: The packing is configured to radially support the bottle wall of the filter bottle from the inside of the filter bottle.

16. The filter bottle device according to any one of claims 1 to 9, characterized in that: The filter bottle cover also includes a circulation portion having a fluid channel, the fluid channel includes a first fluid channel and a second fluid channel, the sealing member is provided with a through hole formed in the second sealing portion, and the first fluid channel and the second fluid channel are both arranged on the inner side of the through hole of the sealing member.

17. The filter bottle device according to claim 16, characterized in that: The first fluid passage is formed between an outer peripheral wall of the communication portion and an inner peripheral wall of the communication portion, and the second fluid passage is formed inside the inner peripheral wall.

18. A filter bottle cap assembly, characterized in that: include: A filter bottle cap, used for being detachably connected to the filter bottle; A sealing member, configured to be able to translate relative to the filter bottle cover; A restraining member, connected to the filter bottle cover, for limiting the downward movement limit position of the sealing member; and At least one elastic member is disposed between the filter bottle cover and the sealing member; The sealing member includes a first sealing portion and a second sealing portion, wherein the first sealing portion is suitable for setting a first sealing member, and a second sealing member is provided between the second sealing portion and the filter bottle cover, wherein the size of the first sealing member is larger than the size of the second sealing member.

19. The filter bottle cap assembly according to claim 18, characterized in that: The first sealing member is disposed between the filter bottle cover and the first sealing portion of the sealing member.

20. The filter bottle cap assembly according to claim 18, wherein: The sealing member is configured to be rotatable relative to the filter bottle cover, and the elastic member includes a first elastic member and a second elastic member, wherein the friction coefficient between the first elastic member and the sealing member is smaller than the friction coefficient between the second elastic member and the sealing member, and when the sealing member is located at the lower limit position, the second elastic member is in a free state, wherein the first elastic member is a spring, and the second elastic member is a flexible elastic member.

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