Water tank cap, water tank and fan

Abstract

This application belongs to the field of fans and relates to a water tank cover, a water tank, and a fan. The water tank cover includes a cover body and a locking tongue. The locking tongue is rotatably mounted on the cover body and has a locked state where it is engaged with a lock cylinder inside the water tank body, and an unlocked state where it is released from the lock cylinder inside the water tank body. With the above-mentioned configuration, rotating the locking tongue to the locked state allows the cover body and the water tank body to be fixed together by the engagement of the locking tongue and the lock cylinder, thus enhancing the fixing strength of the water tank cover.

Description

Technical Field

[0001] This application relates to the field of fan technology, and more specifically, to a water tank cover, a water tank, and a fan. Background Technology

[0002] In the iterative development of fans, fans with humidification functions have been designed. These fans have a built-in water tank, which typically consists of a tank body and a cap, with the cap snapped onto the tank body. However, the snap-fit ​​method for securing the cap results in low strength, thus requiring improvement. Utility Model Content

[0003] Therefore, it is necessary to provide a water tank cover that can enhance the fixing strength of the water tank cover to address the above problems.

[0004] The above objectives are achieved through the following technical solutions in the embodiments of this application.

[0005] This application provides a water tank cover, which includes a cover body and a locking tongue. The locking tongue is rotatably mounted on the cover body and has a locked state where it is engaged with a lock cylinder inside the water tank body, and an unlocked state where it is released from the lock cylinder inside the water tank body.

[0006] In one embodiment, the outer periphery of the latch is formed with a latch portion located inside the cover body, and the latch portion is formed as a latch surface on the side facing the cover body;

[0007] The latching surface engages with the locking surface of the lock cylinder when the bolt is in the locked state, and the latching surface is released from constraint with the locking surface of the lock cylinder when the bolt is in the unlocked state.

[0008] In one embodiment, the distance between the latching surface and the rotation axis of the latch is progressively increased in the direction from the cover to the latching portion.

[0009] In one embodiment, the latch is rotatably inserted through the cover, and the outer peripheral wall of the latch is provided with a limiting protrusion. The outer peripheral wall of the latch can also be detachably connected to a limiting member, and the cover is sandwiched between the limiting protrusion and the limiting member.

[0010] In one embodiment, the outer peripheral wall of the latch is recessed with a mounting groove extending circumferentially therein, the limiting member is arranged in an annular shape with an opening, and the inner side of the limiting member in the radial direction is engaged in the mounting groove, while the outer side of the limiting member in the radial direction extends out of the mounting groove and abuts against the cover.

[0011] In one embodiment, a gasket is further sandwiched between the cover and the limiting member, or a sealing ring is sandwiched between the cover and the limiting protrusion.

[0012] In one embodiment, the latch portion is exposed on the outside of the cover and connected to a grip; or, the latch portion is exposed on the outside of the cover and connected to a grip; a positioning protrusion is formed on the outside of the cover, the grip abuts against one side of the positioning protrusion when the cover is locked, and the grip abuts against the other side of the positioning protrusion when the cover is unlocked.

[0013] This application also provides a water tank, which includes a water tank body and a water tank cover as described above. The water tank body is integrally formed, fixedly connected, or detachably connected to a lock core.

[0014] The water tank cover includes a cover body and a latch. The cover body is detachably fitted onto the water tank body. The latch is rotatably mounted on the cover body and has a locked state that is engaged with the lock cylinder and an unlocked state that is released from the lock cylinder.

[0015] In one embodiment, the lock cylinder has a lock cylinder cavity and a lock cylinder opening communicating with the lock cylinder cavity, the cavity wall of the lock cylinder cavity adjacent to the lock cylinder opening is formed as a locking surface, and the lock cylinder opening is non-circular;

[0016] The outer peripheral surface of the latch is formed with a latch portion located inside the cover body, and the latch portion is formed as a latch surface on the side facing the cover body;

[0017] The latching surface engages with the engaging surface when the latch is in the locked state, and the latching surface is released from constraint when the latch is in the unlocked state.

[0018] This application also provides a fan, which includes a water tank cover as described above and / or a water tank as described above.

[0019] Compared with the prior art, the embodiments of this application have the following advantages: This application provides a water tank cover including a cover body and a locking tongue, and the locking tongue is rotatably installed on the cover body to have a locked state that engages with the lock cylinder inside the water tank body and an unlocked state that releases the constraint from the lock cylinder inside the water tank body. By rotating the locking tongue to the locked state, the cover body of the water tank cover and the water tank body can be locked together by the locking tongue and the lock cylinder, thus enhancing the fixing strength of the water tank cover. Attached Figure Description

[0020] To more clearly illustrate the solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a perspective view of a fan in one embodiment of this application;

[0022] Figure 2 yes Figure 1 Partial cross-sectional structural diagram;

[0023] Figure 3 This is an exploded structural diagram of the water tank cover in one embodiment of this application;

[0024] Figure 4 yes Figure 3 Another structural diagram from a different perspective;

[0025] Figure 5 This is a schematic diagram of the lock cylinder being removed from the water tank body;

[0026] Figure 6 This is a schematic diagram of the overall structure of the water tank cover in one embodiment of this application;

[0027] Figure 7 yes Figure 5 A magnified structural diagram of part A in the middle;

[0028] Figure 8 This is a perspective view of the lock cylinder in one embodiment of this application;

[0029] Figure 9 This is a perspective view of the locking tongue in one embodiment of this application;

[0030] Figure 10 This is a cross-sectional structural schematic diagram of the lock cylinder in one embodiment of this application.

[0031] Figure label:

[0032] 1000, Fan;

[0033] 100. Water tank;

[0034] 110. Water tank cover;

[0035] 111. Cover; 11101. Pressure-bearing surface; 11102. Through hole; 11103. Groove; 1111. Annular part; 1112. Positioning protrusion;

[0036] 112. Locking tongue; 11201. Mounting groove; 1121. Locking part; 11211. Locking surface; 1122. Limiting protrusion; 1123. Limiting element; 1124. Gasket; 1125. Sealing ring; 1126. Rotating shaft;

[0037] 113. Grip element;

[0038] 120. Water tank body; 1201. Liquid storage chamber; 1202. Connecting port; 1203. Pressing surface; 1204. Pressing protrusion; 121. Lock cylinder; 1211. Rib; 12101. Locking surface; 12102. Lock cylinder cavity; 12103. Lock cylinder opening; 122. Mounting protrusion; 12201. Assembly groove;

[0039] 200. Fan body; 210. Fan section; 220. Handheld part. Detailed Implementation

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0041] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0042] This application provides a water tank in which a locking tongue is rotatably connected to the cover of the water tank and a lock cylinder is provided inside the water tank body. By rotating the locking tongue to the locked state, the cover of the water tank and the water tank body can be locked together by the locking tongue and the lock cylinder, thereby enhancing the fixing strength of the water tank cover.

[0043] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0044] Please see Figures 1 to 4 This application also provides a water tank 100, which includes a water tank cover 110 and a water tank body 120. The water tank cover 110 includes a cover body 111 and a locking tongue 112. The cover body 111 is detachably fitted onto the water tank body 120. A lock cylinder 121 is provided inside the water tank body 120. The locking tongue 112 is rotatably mounted on the cover body 111 and has a locked state that is locked with the lock cylinder 121 and an unlocked state that is released from the lock cylinder 121. For details, please refer to... Figure 2 and Figure 5 The water tank body 120 is provided with a liquid storage chamber 1201 and a communication port 1202 connecting the liquid storage chamber 1201 and the external environment. The water tank cover 110 is used to cover or open the communication port 1202. The lock cylinder 121 is located in the liquid storage chamber 1201.

[0045] In this embodiment, when the latch 112 is engaged with the lock cylinder 121, the cover 111 is pressed against the water tank body 120. This enhances both the fixing strength of the water tank cover 110 and the sealing performance at the connection between the water tank cover 110 and the water tank body 120. In other embodiments, when the latch 112 is engaged with the lock cylinder 121, the cover 111 and the water tank body 120 may only be in contact without any tendency to press against each other.

[0046] There are many ways to connect the cover 111 and the water tank body 120. In this embodiment, please refer to... Figure 1 The cover 111 and the water tank body 120 can be two completely independent components. In use, the cover 111 is used to snap onto the water tank body 120. In other embodiments, the cover 111 and the water tank body 120 can also be two connected components. For example, the cover 111 is rotatably mounted on the water tank body 120, or the cover 111 is connected to the water tank body 120 by a connecting strip.

[0047] Further, please refer to Figure 6 The outer peripheral wall of the cover 111 has a pressure-bearing surface 11101 extending circumferentially therein. Please refer to [link / reference]. Figure 5 and Figure 7 The inner peripheral wall of the water tank body 120 has a pressing surface 1203 extending circumferentially therein, and the pressing surface 1203 has a pressing protrusion 1204 extending circumferentially therein. When the locking tongue 112 and the locking cylinder 121 are locked, the pressing surface 11101 is elastically pressed by the pressing protrusion 1204, which can effectively seal the gap between the outer peripheral wall of the cover 111 and the inner peripheral wall of the water tank body 120. Specifically, the pressing surface 11101 on the cover 111 is made of soft rubber, and the pressing protrusion 1204 on the water tank body 120 is made of hard rubber. This allows the pressing surface 11101 to deform after pressing against the pressing protrusion 1204 and partially cover the pressing protrusion 1204, thereby enhancing the sealing between the two. In addition, the width of the pressing protrusion 1204 is gradually reduced in the direction from the pressing surface 1203 to the pressure-receiving surface 11101, which can reduce the contact area between the pressing protrusion 1204 and the pressure-receiving surface 11101, and make it easier for the pressure-receiving surface 11101 to deform.

[0048] There are many ways to connect the lock cylinder 121 to the water tank body 120. In this embodiment, the lock cylinder 121 and the water tank body 120 are detachably connected by means of plug-in connection, snap-fit ​​connection, magnetic connection, threaded connection, etc. This design facilitates the replacement and maintenance of the lock cylinder 121. In other embodiments, the lock cylinder 121 and the water tank body 120 can also be integrally formed, which can enhance the connection strength between the lock cylinder 121 and the water tank body 120. The lock cylinder 121 and the water tank body 120 can also be fixedly connected by means of bonding, welding, etc.

[0049] Specifically, please refer to Figure 5 The liquid storage chamber 1201 has a mounting protrusion 122 on its wall facing the connecting port 1202. The mounting protrusion 122 has a mounting groove 12201 on its side facing the opening. The lock cylinder 121 is interference-fitted into the mounting groove 12201, thus facilitating the assembly of the lock cylinder 121. Please refer to... Figure 8 The outer peripheral wall of the lock cylinder 121 is provided with a plurality of protruding ribs 1211 arranged at intervals along its circumference. Each protruding rib 1211 extends along the axial direction of the lock cylinder 121 and each protruding rib 1211 is in interference fit with the inner peripheral wall of the mounting groove 12201. This not only achieves interference fit of the lock cylinder 121, but also reduces the contact area between the lock cylinder 121 and the inner peripheral wall of the mounting groove 12201, thereby making it easier to remove the lock cylinder 121 from the mounting groove 12201.

[0050] The number of latches 112 is the same as the number of lock cylinders 121, and the number of both can be set to one or more. In this article, "more" refers to two or more. In addition, the latches 112 can be located at the center of the cover 111 or at the edge of the cover 111. No specific limitation is made here.

[0051] With the above technical solution, when installing the water tank cover 110, the cover body 111 covers the water tank body 120, and the locking tongue 112 is rotated to lock the lock body 111 with the lock cylinder 121. The cover body 111 of the water tank cover 110 and the water tank body 120 are locked together, thus completing the installation of the water tank cover 110. When removing the water tank cover 110, the locking tongue 112 is rotated to unlock the lock cylinder 121, thus releasing the lock body 111 of the water tank cover 110 from the water tank body 120. This allows the water tank cover 110 to be removed from the water tank body 120. This design uses a non-traditional locking tongue 112 and lock cylinder 121 method to fix the water tank cover 110 and the water tank body 120, thereby enhancing the fixing strength of the water tank cover 110.

[0052] It is understandable that the locking of the latch 112 and the closing of the cover 111 onto the water tank body 120 can be performed simultaneously, that is, the cover 111 is closed onto the water tank body 120 while the latch 112 is locked; the locking of the latch 112 and the closing of the cover 111 onto the water tank body 120 can also be performed sequentially, that is, the cover 111 is closed onto the water tank body 120 first, and then the latch 112 is rotated to the locked state.

[0053] When the locking tongue 112 is in the locked state and the cover 111 is closed onto the water tank body 120 simultaneously, in one embodiment of this application, one end of the locking tongue 112 is freely connected to the cover 111 and exposed on the outside of the cover 111, and the other end of the locking tongue 112 extends away from the inside of the cover 111 and is provided with an external thread (not shown). The inner peripheral wall of the lock cylinder 121 is provided with an internal thread (not shown) for cooperating with the external thread. Accordingly, the locked state is the state in which the external thread of the locking tongue 112 and the internal thread of the lock cylinder 121 are fully screwed together, and the unlocked state is the state in which the external thread of the locking tongue 112 and the internal thread of the lock cylinder 121 are completely disengaged.

[0054] With the above technical solution, when installing the water tank cover 110, the external thread of the locking tongue 112 is screwed into the thread of the lock cylinder 121, and the cover 111 is moved toward the water tank body 120 until the external thread of the locking tongue 112 is fully screwed into the internal thread of the lock cylinder 121. Simultaneously, the cover 111 is placed on the water tank body 120, and the locking of the locking tongue 112 is performed synchronously. Similarly, the unlocking of the locking tongue 112 and the removal of the cover 111 from the water tank body 120 are also performed synchronously, and will not be elaborated further here.

[0055] When the locking tongue 112 is in the locked state and the lid 111 closes onto the water tank body 120 sequentially, please refer to [the relevant documentation]. Figure 2 , Figure 9 as well as Figure 10 In one embodiment of this application, the latch 112 is idling connected to the cover 111. A latch portion 1121 is formed on the outer periphery of the latch 112, located inside the cover 111. The side of the latch portion 1121 facing the cover 111 forms a latch surface 11211. The lock cylinder 121 has a locking surface 12101. When the latch 112 is in the locked state, the latch surface 11211 engages with the locking surface 12101 of the lock cylinder 121. When the latch 112 is in the unlocked state, the latch surface 11211 is released from constraint with the locking surface 12101 of the lock cylinder 121. Accordingly, the locked state is the state where the latch surface 11211 is engaged with the locking surface 12101, and the unlocked state is the state where the latch surface 11211 is released from constraint with the locking surface 12101.

[0056] With the above technical solution, when installing the water tank cover 110, the cover body 111 is first placed on the water tank body 120, and then the locking tongue 112 is rotated until the locking surface 11211 and the locking surface 12101 are engaged, thus locking the locking tongue 112. Therefore, locking the cover 112 and placing the cover body 111 on the water tank body 120 occur sequentially. Similarly, unlocking the locking tongue 112 and removing the cover body 111 from the water tank body 120 also occur sequentially, and will not be elaborated further here.

[0057] In other embodiments, a waterproof motor may be provided in the cover 111, and the locking tongue 112 may be connected to the drive end of the waterproof motor, so that the locking tongue 112 can be driven to rotate by the waterproof motor.

[0058] There are many ways to form the aforementioned locking surface 12101; please refer to [the relevant documentation]. Figure 2 , Figure 3 , Figure 9 as well as Figure 10 In one embodiment of this application, the lock cylinder 121 has a lock cylinder cavity 12102 and a lock cylinder opening 12103 communicating with the lock cylinder cavity 12102. The cavity wall of the lock cylinder cavity 12102 adjacent to the lock cylinder opening 12103 is formed as a locking surface 12101. The lock cylinder opening 12103 is non-circular. Specifically, the cross section of the lock cylinder opening 12103 in the direction perpendicular to the axis of the lock cylinder 121 is non-circular. Correspondingly, the shape of the latch portion 1121 is adapted to the shape of the lock cylinder opening 12103.

[0059] The shape of the cross-section of the lock cylinder opening 12103 and the latch part 1121 in the direction perpendicular to the axis of the lock cylinder 121 can be varied. It can be a non-circular shape such as an oval, triangle, rectangle, square, rhombus, etc., and no specific limitation is made here.

[0060] Using the above technical solution, when installing the water tank cover 110, first place the cover body 111 onto the water tank body 120, and simultaneously extend the locking part 1121 on the locking tongue 112 through the lock cylinder opening 12103 into the lock cylinder cavity 12102. Then rotate the locking tongue 112 so that the locking surface 11211 on the locking part 1121 rotates to lock with the locking surface 12101, thus fixing the cover body 111 and the water tank body 120 together, thereby completing the installation of the water tank cover 110. The disassembly of the water tank cover 110 is the reverse of the installation steps, and will not be detailed here.

[0061] In other embodiments, a sheet-like structural member may be installed inside the water tank body 120, with the side of the sheet-like structural member facing away from the cover 111 forming a locking surface 12101.

[0062] To enhance the securing strength of the water tank cap 110, please refer to... Figure 2, Figure 3 , Figure 9 as well as Figure 10 In one embodiment of this application, the distance between the locking surface 11211 and the rotation axis of the latch 112 increases progressively in the direction from the cover 111 to the locking part 1121, and the distance between the locking surface 12101 and the axis of the lock cylinder 121 increases progressively in the direction from the cover 111 to the locking part 1121. This arrangement makes both the locking surface 11211 and the locking surface 12101 inclined, so that when the locking surface 11211 rotates to lock with the locking surface 12101, a pressure is generated on the cover 111, pressing the cover 111 against the water tank body 120, thereby enhancing the fixing strength of the water tank cover 110.

[0063] In this embodiment, the angle between the locking surface 11211 and the rotation axis of the bolt 112 is equal to the angle between the engagement surface 12101 and the axis of the lock cylinder 121. This ensures that all positions on the locking surface 11211 can abut against the engagement surface 12101, facilitating the locking of the locking surface 11211 and the engagement surface 12101. The angles between the locking surface 11211 and the rotation axis of the bolt 112, and between the engagement surface 12101 and the axis of the lock cylinder 121, are both acute angles. The size of these angles can be selected from any one or any two of 30 degrees, 45 degrees, 50 degrees, 55 degrees, 60 degrees, 65 degrees, and 70 degrees.

[0064] For easier inspection and replacement of the locking tongue 112, please refer to [link / reference]. Figures 2 to 4 ,as well as Figure 9 In one embodiment of this application, the locking tongue 112 is rotatably inserted through the cover 111, and the outer peripheral wall of the locking tongue 112 is provided with a limiting protrusion 1122. The outer peripheral wall of the locking tongue 112 can also be detachably connected to a limiting member 1123, and the cover 111 is sandwiched between the limiting protrusion 1122 and the limiting member 1123.

[0065] With the above technical solution, when installing the latch 112, first pass the latch 112 through the cover 111 until the limiting protrusion 1122 abuts against the outer side of the cover 111 and the limiting protrusion 1122. Then, install the limiting member 1123 on the latch 112, so that the limiting member 1123 abuts against the inner side of the cover 111. This allows the cover 111 to be sandwiched between the limiting protrusion 1122 and the limiting member 1123, thus completing the installation of the latch 112. When disassembling the latch 112, first remove the limiting member 1123 from the latch 112, and then pass the latch 112 through the cover 111, thus completing the disassembly of the latch 112. This configuration enables a detachable connection between the latch 112 and the cover 111, thereby facilitating the inspection and replacement of the latch 112.

[0066] Specifically, the cover 111 is provided with a through hole 11102 for the latch 112 to pass through. The limiting protrusion 1122 and the latching part 1121 are located at both ends of the axial direction of the latch 112. The limiting member 1123 is located between the limiting part and the latching part 1121. The outer periphery of the latching part 1121 does not exceed the outer periphery of the lock cylinder 121, thus ensuring that the position of the latching part 1121 can pass through the through hole 11102.

[0067] There are many ways in which the locking limit member 1123 can be detachably installed on the lock tongue 112; please refer to [the relevant documentation]. Figures 2 to 4 ,as well as Figure 9 In one embodiment of this application, the outer peripheral wall of the latch 112 is recessed with a mounting groove 11201 extending circumferentially therein, the limiting member 1123 is elastic and is arranged in an annular shape with an opening, the inner side of the limiting member 1123 in the radial direction is engaged in the mounting groove 11201, and the outer side of the limiting member 1123 in the radial direction extends out of the mounting groove 11201 and abuts against the cover 111.

[0068] With the above technical solution, when installing the limiting member 1123, the limiting member 1123 is pried open along its opening and snapped into the mounting groove 11201, thus completing the installation of the limiting member 1123; when removing the limiting member 1123, the limiting member 1123 is pried open along its opening and taken out from the mounting groove 11201, thus completing the removal of the limiting member 1123, which makes the removal of the limiting member 1123 convenient.

[0069] In other embodiments, the limiting member 1123 may also be threaded onto the outer peripheral wall of the locking tongue 112 to achieve a detachable connection between the limiting member 1123 and the locking tongue 112.

[0070] Considering that if the limiting member 1123 directly abuts against the cover 111, wear and tear will occur on both the cover 111 and the limiting member 1123 during long-term use, thereby shortening their service life, in order to avoid shortening their service life due to wear caused by direct contact, please refer to [the relevant documentation / reference]. Figure 1 In one embodiment of this application, a gasket 1124 is also sandwiched between the cover 111 and the limiting member 1123, and the gasket 1124 is sleeved on the outer periphery of the locking tongue 112.

[0071] In this embodiment, please refer to Figures 2 to 4 ,as well as Figure 9The cover 111 has an annular portion 1111 surrounding the through hole 11102. A gasket 1124 is sandwiched between the limiting member 1123 and the annular portion 1111. This shortens the distance between the cover 111 and the limiting member 1123, thereby reducing the thickness of the gasket 1124 and making the water tank cover 110 more compact. In other embodiments, the gasket 1124 may also be directly sandwiched between the limiting member 1123 and the inner side of the cover 111.

[0072] To enhance the sealing at the connection between the cover 111 and the limiting protrusion 1122, please refer to Figure 1 In one embodiment of this application, a sealing ring 1125 is sandwiched between the cover 111 and the limiting protrusion 1122.

[0073] Furthermore, a groove 11103 is provided on the outer side of the cover 111, and a limiting protrusion 1122 is located in the groove 11103. This ensures that the limiting protrusion 1122 does not protrude from the outer side of the cover 111, thereby ensuring that the outer shape of the cover 111 does not increase.

[0074] For easier rotation of the locking tongue 112, please refer to [link / reference]. Figure 1 In one embodiment of this application, the latch 112 is partially exposed on the outside of the cover 111 and is connected to a grip 113. With this configuration, the latch 112 can be rotated by gripping the grip 113, thus making it convenient to rotate the latch 112.

[0075] Further, please refer to Figure 1 and Figure 2 The grip 113 is U-shaped, with its two ends at the opening corresponding to the two opposite sides of the limiting protrusion 1122, allowing the grip 113 to be in an idle state within the groove 11103 and in a usable state where it rotates out of the groove 11103. Specifically, a rotating shaft 1126 is rotatably inserted within the limiting protrusion 1122, and the two ends at the opening of the grip 113 are connected to the two ends of the rotating shaft 1126, thus achieving a rotatable connection between the limiting protrusion 1122 and the grip 113.

[0076] In other embodiments, the gripper 113 may not be provided, and the locking tongue 112 may be controlled to rotate by directly gripping the limiting protrusion 1122.

[0077] Furthermore, please refer to Figure 1The outer side of the cover 111 has a positioning protrusion 1112. Specifically, the positioning protrusion 1112 is located in the groove 11103. When the latch 112 is in the locked state, the grip 113 abuts against one side of the positioning protrusion 1112. When the latch 112 is in the unlocked state, the grip 113 abuts against the other side of the positioning protrusion 1112. In this way, the grip 113 can be positioned by the positioning protrusion 1112 so as to switch the latch 112 between the locked state and the unlocked state.

[0078] Please see Figure 1 This application also provides a fan 1000, which includes a water tank 100 and a fan body 200 as described above. The water tank 100 is disposed on the fan body 200. The specific structure of the water tank 100 is the same as described in the above embodiments. Since the fan 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0079] In this embodiment, the fan body 200 includes a fan section 210 and a handheld section 220 connected together. The water tank body 120 is integrally formed with the lower part of the handheld section 220, which enhances the fixing strength of the water tank body 120. In other embodiments, the fan body 200 can also be set as an integral component, and the water tank body 120 can also be fixed to the handheld section 220 or the fan section 210 by the fixed connection or detachable connection method described in the above embodiments.

[0080] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A water tank cover (110), characterized in that, The water tank cover (110) includes a cover body (111) and a latch (112). The latch (112) is rotatably mounted on the cover body (111) and has a locked state that is engaged with the lock cylinder (121) inside the water tank body (120) and an unlocked state that is released from the lock cylinder (121) inside the water tank body (120).

2. The water tank cover (110) according to claim 1, characterized in that, The outer periphery of the latch (112) is formed with a latch portion (1121) located inside the cover (111), and the side of the latch portion (1121) facing the cover (111) is formed as a latch surface (11211). The latching surface (11211) engages with the locking surface (12101) of the lock cylinder (121) when the bolt (112) is in the locked state, and the latching surface (11211) is released from constraint with the locking surface (12101) of the lock cylinder (121) when the bolt (112) is in the unlocked state.

3. The water tank cover (110) according to claim 2, characterized in that, The distance between the locking surface (11211) and the rotation axis of the latch (112) increases progressively in the direction from the cover (111) to the locking part (1121).

4. The water tank cover (110) according to claim 3, characterized in that, The latch (112) is rotatably inserted through the cover (111), and the outer peripheral wall of the latch (112) is provided with a limiting protrusion (1122). The outer peripheral wall of the latch (112) can also be detachably connected to a limiting member (1123). The cover (111) is sandwiched between the limiting protrusion (1122) and the limiting member (1123).

5. The water tank cover (110) according to claim 4, characterized in that, The outer peripheral wall of the latch (112) is recessed with a mounting groove (11201) extending circumferentially therein. The limiting member (1123) is arranged in an annular shape with an opening. The inner side of the limiting member (1123) in the radial direction is engaged in the mounting groove (11201), and the outer side of the limiting member (1123) in the radial direction extends out of the mounting groove (11201) and abuts against the cover (111).

6. The water tank cover (110) according to claim 4, characterized in that, A gasket (1124) is also sandwiched between the cover (111) and the limiting member (1123), or a sealing ring (1125) is sandwiched between the cover (111) and the limiting protrusion (1122).

7. The water tank cover (110) according to any one of claims 1 to 6, characterized in that, The latch (112) is partially exposed on the outside of the cover (111) and is connected to a grip (113); Alternatively, the latch (112) is partially exposed on the outside of the cover (111) and connected to a grip (113); a positioning protrusion (1112) is formed on the outside of the cover (111), the grip (113) abuts against one side of the positioning protrusion (1112) in the locked state, and the grip (113) abuts against the other side of the positioning protrusion (1112) in the unlocked state.

8. A water tank (100), characterized in that, The water tank (100) includes a water tank body (120) and a water tank cover (110) as described in any one of claims 1 to 7. The water tank body (120) is integrally formed, fixedly connected or detachably connected to a lock cylinder (121). The water tank cover (110) includes a cover body (111) and a locking tongue (112). The cover body (111) is detachably fitted onto the water tank body (120). The locking tongue (112) is rotatably mounted on the cover body (111) and has a locked state that is engaged with the lock cylinder (121) and an unlocked state that is released from the lock cylinder (121).

9. The water tank (100) according to claim 8, characterized in that, The lock cylinder (121) has a lock cylinder cavity (12102) and a lock cylinder opening (12103) communicating with the lock cylinder cavity (12102). The cavity wall of the lock cylinder cavity (12102) adjacent to the lock cylinder opening (12103) is formed as a locking surface (12101). The lock cylinder opening (12103) is non-circular. The outer peripheral surface of the latch (112) is formed with a latch portion (1121) located inside the cover (111), and the side of the latch portion (1121) facing the cover (111) is formed as a latch surface (11211). The latching surface (11211) engages with the locking surface (12101) when the latch (112) is in the locked state, and the latching surface (11211) is released from constraint with the locking surface (12101) when the latch (112) is in the unlocked state.

10. A fan (1000), characterized in that, The fan (1000) includes a water tank cover (110) as described in any one of claims 1 to 7 and / or a water tank (100) as described in any one of claims 8 to 9.

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