CN107518724B

CN107518724B - Water cup

Info

Publication number: CN107518724B
Application number: CN201610466831.7A
Authority: CN
Inventors: 王国栋; 黄理水; 史庭飞
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2016-06-22
Filing date: 2016-06-22
Publication date: 2023-03-21
Anticipated expiration: 2036-06-22
Also published as: CN107518724A

Abstract

The invention provides a water cup. The water cup comprises a cup body (1) with an opening, a cup cover (2) covered on the cup body (1) and a locking device (3), wherein the cup cover (2) comprises a first cover body (21), a second cover body (22) and a bottom cover (23), the first cover body (21) and the second cover body (22) are hinged with the bottom cover (23) through a horizontal hinge shaft (26), the locking device (3) comprises a first clamping piece (31) which can be clamped at the free end (212) of the first cover body (21), a second clamping piece (32) which can be clamped at the free end (222) of the second cover body (22) and a moving piece (33), and the moving piece (33) is arranged to move towards two opposite directions so as to respectively trigger the first clamping piece (31) and the second clamping piece (32) to be separated from clamping. The invention can conveniently realize the opening and closing and locking operations of the double-layer cup cover.

Description

Water cup

Technical Field

The invention relates to the field of living appliances, in particular to a water cup.

Background

Along with the improvement of living standard of people, the use requirements of daily necessities such as water cups and the like are higher and higher.

At present, in order to enhance the portability of the cup and to heat the cup for other functions, the cup generally comprises a cup body and a double-layer cup cover covering an opening above the cup body, wherein the double-layer cup cover generally comprises a bottom cover sleeved at the opening of the cup body, an inner-layer cup cover and an outer-layer cup cover, and the inner-layer cup cover and the outer-layer cup cover can be covered on the bottom cover. When water heating or other operations are required, the outer layer cup cover in the double-layer cup cover can be lifted, and only the inner layer cup cover is arranged at the opening above the cup body; when the water pouring operation is needed, the outer layer cup cover and the inner layer cup cover can be both lifted, so that an opening above the cup body is exposed; when the cup is sealed and closed, the outer layer cup cover and the inner layer cup cover can be covered on the bottom cover on the opening above the cup body. In order to ensure that the double-layer cup cover covers the opening of the cup body tightly, a buckle can be arranged on the double-layer cup cover, one end of the buckle is connected with the cup body or the bottom cover, and the other end of the buckle is clamped at the edge of the outer-layer cup cover or the inner-layer cup cover so as to realize the buckling and locking of the cup cover. If the opening and closing of the outer cup cover or the inner cup cover need to be controlled independently, the two cup covers are locked by arranging a plurality of buckles, such as double buckles.

However, when the cup cover is locked, a plurality of buckles are needed to lock the cup cover respectively, the locking process is complex, and the use is inconvenient.

Disclosure of Invention

The invention provides a water cup which can conveniently realize the opening, closing and locking operations of a double-layer cup cover.

The invention provides a water cup, which comprises a cup body with an opening, a cup cover covered on the cup body, wherein the cup cover comprises a first cover body, a second cover body and a bottom cover, the fixed end of the first cover body and the fixed end of the second cover body are hinged with the bottom cover through a horizontal hinge shaft, the water cup also comprises a locking device, the locking device is provided with a first clamping piece which can be clamped at the free end of the first cover body, a second clamping piece which can be clamped at the free end of the second cover body and a moving piece which can move relative to the bottom cover, and the moving piece is set to move towards two opposite directions so as to respectively trigger the first clamping piece and the second clamping piece to be separated from clamping. Different covers can be opened only by controlling the moving direction and the moving mode of the moving piece, and different cover opening operations are realized.

Optionally, the free end of the first cover body is provided with an upper protrusion which can be engaged with the first fastener, and the free end of the second cover body is provided with a lower protrusion which can be engaged with the second fastener. Thus, the first cover body or the second cover body with the surface being a plane or a smooth cambered surface can be conveniently fixed with other parts.

Optionally, a first horizontal rotating shaft is arranged on the second cover body, the first clamping piece is hinged to the second cover body through the first horizontal rotating shaft, a first clamping hook portion and a pushing portion are arranged on the first clamping piece, and when the pushing portion is pushed by the moving piece, the first clamping piece rotates around the first horizontal rotating shaft, so that the first clamping hook portion and the free end of the first cover body are disengaged from each other.

Optionally, a second horizontal rotating shaft is arranged on the bottom cover, the second clamping piece is hinged to the bottom cover through the second horizontal rotating shaft, a second clamping hook portion and a pressing portion are arranged on two sides, opposite to the second horizontal rotating shaft, of the second clamping piece, and when the pressing portion receives an acting force of the moving piece, the second clamping piece rotates around the second horizontal rotating shaft, so that the second clamping hook portion and the free end of the second cover body are disengaged from each other.

Optionally, the moving member has a pressing surface facing the radial inner side of the cup cover and a boss arranged on the pressing surface, the pressing surface is attached to the outer side surface of the pressing portion facing the radial outer side of the cup cover, the outer side surface of the pressing portion can slide up and down, and the top end of the boss abuts against the pushing portion to push the pushing portion when the moving member slides or rotates.

Optionally, the moving part is provided with a positioning part protruding to the radial inner side of the cup cover; the edge of the bottom cover is provided with a limiting part protruding to the radial outer side of the cup cover, and the limiting part is arranged to be abutted against the positioning part so as to limit the moving part to rotate. Only through the translation moving member like this, make the inboard location portion of moving member stagger with the spacing portion at bottom edge, then can press the lateral surface relative with the press surface of moving member, and let the moving member produce and rotate and can effectively avoid leading to the drinking cup to uncap by accident because of the mistake presses the operation.

Optionally, an elastic member is disposed between the pressing portion and the bottom cover. Therefore, after the moving member is pressed to open the cover of the second cover body, the moving member can be automatically reset through the elasticity of the elastic member.

Optionally, at least one positioning groove is formed in the outer side face of the pressing portion at intervals along the sliding direction of the moving member, and a positioning convex point which can be clamped in the positioning groove is arranged on the pressing face. Therefore, the positions of the moving piece relative to the first clamping piece and the second clamping piece can be conveniently adjusted, and the reliability of the locking device is ensured.

Optionally, the surface of the moving member facing the radial outer side of the cup cover is provided with anti-skid protrusions or anti-skid lines. Therefore, the outer side surface of the moving part has stronger friction force or a proper acting point with the outside, and a user can conveniently move and push the moving part in a translation mode.

Optionally, the top end of the boss is an arc surface. Therefore, no matter the first clamping piece is horizontally moved and abutted to the pushing part of the first clamping piece or the pushing part is changed in position through self rotation, the relative movement between the top end of the boss and the pushing part is smooth, and dead points are avoided.

The construction of the present invention and other objects and advantages thereof will be more apparent from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

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

FIG. 1 is a schematic cross-sectional view of a cup according to a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a cup according to a first embodiment of the present invention;

FIG. 3 is a partial schematic view of a lid portion of a cup according to an embodiment of the present invention;

FIG. 4 is a schematic view of the lid of FIG. 3 with the first lid portion open;

FIG. 5 is a schematic view of the lid of FIG. 3 with the second lid portion open;

fig. 6 is a schematic structural diagram of a positioning structure of a moving element according to an embodiment of the present invention.

Description of reference numerals:

1-cup body; 2, a cup cover; 3-a locking device; 4-a heating device; 5, a control panel; 6-a panel;

21 — a first cover; 22 — a second cover; 23-bottom cover; 24-a first horizontal axis of rotation; 25-a second horizontal rotating shaft; 26-a horizontal hinge axis; 31 — a first fastener; 32-a second fastener; 33-a moving member; 34-an elastic member;

211 — a fixed end of the first cover; 212 — free end of first cover; 221 — fixed end of second cover; 222 — free end of second cover; 223-steam exhaust; 231-a limiting part; 232-drinking water port; 311-first hook part; 312 — a pushing portion; 321-a second hook part; 322-a pressing part; 323-positioning groove; 331-pressing surface; 332-a boss; 333-positioning part; 334-positioning bumps; 335 — anti-slip bump;

212 a-upper projection; 222a — lower projection; 223 a-steam seal; 232 a-drinking spout seal.

Detailed Description

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

Fig. 1 is a schematic cross-sectional view of a cup according to a first embodiment of the invention. Fig. 2 is a schematic structural diagram of a water cup provided in the first embodiment of the present invention. Fig. 3 is a partial schematic view of a lid portion of a cup according to an embodiment of the invention. FIG. 4 is a schematic view of the lid of FIG. 3 with the first lid open. FIG. 5 is a schematic view of the lid of FIG. 3 with the second lid portion open. As shown in fig. 1 to fig. 5, the water cup provided by this embodiment includes a cup body 1 having an opening at a top end thereof, and a cup cover 2 covering the opening of the cup body 1, the cup cover 2 includes a first cover body 21, a second cover body 22, and a bottom cover 23, the bottom cover 23 is covered on the opening of the cup body 1, a fixed end 211 of the first cover body 21 and a fixed end 221 of the second cover body 22 are hinged to the bottom cover 23 through a horizontal hinge shaft 26 to be in an opened state or closed with the bottom cover 23, an opening direction of the first cover body 21 and that of the second cover body 22 are the same, the water cup further includes a locking device 3, the locking device 3 is located outside a free end 212 of the first cover body 21 and a free end 222 of the second cover body 22, the locking device 3 has a first fastener 31 capable of being engaged with the free end 212 of the first cover body 21, a second fastener 32 capable of being engaged with the free end 222 of the second cover body 22, and a

movable member

33, 33 movable relative to the movable in two opposite directions to trigger the first fastener 31 and the second fastener 32 to be disengaged.

In particular, the cup body 1 of the cup is usually of an open design, with an opening arranged at the top and a lid 2 covering the opening to close the cup body 1. The cup lid 2 includes a first lid body 21, a second lid body 22, and a bottom lid 23. The bottom cover 23 is generally slightly larger than the opening of the cup body 1 so as to fit over the top of the cup body of the cup and serve as a connecting portion between the cup body 1 and the upper second cover 22. The fixed end 211 of the first cover 21 and the fixed end 221 of the second cover 22 are hinged to the bottom cover 23 through a horizontal hinge shaft 26, and can rotate around the horizontal hinge shaft 26 to be opened or closed with the bottom cover 23. The second cover 22 is generally disposed between the first cover 21 and the bottom cover 23, and the rotation range of the second cover 22 is also between the first cover 21 and the bottom cover 23, so when the second cover 22 is opened by the water cup, the first cover 21 needs to be opened first, and then the second cover 22 needs to be opened, or the second cover 22 and the first cover 21 need to be opened at the same time; when the first lid 21 is opened, the lid can be opened alone. Therefore, the two covers of the double-layer cup cover can be opened, or only the first cover 21 is opened.

In order to lock the cup lid 2, the cup includes a locking device 3, and the locking device 3 is located outside the free end 212 of the first cover 21 and the free end 222 of the second cover 22, i.e. outside the ends of the first cover 21 and the second cover 22 opposite to the horizontal hinge shaft 26. The locking device 3 is composed of a plurality of different parts, including a first fastener 31 capable of being fastened to the free end 212 of the first cover 21, a second fastener 32 capable of being fastened to the free end 222 of the second cover 22, and a movable member 33 capable of moving relative to the bottom cover 23, where the first fastener 31 can lock the first cover 21 when the first cover 21 is covered, the second fastener 32 can lock when the second cover 22 is covered, and the movable member 33 can move relative to the bottom cover 23, so as to drive the first fastener 31 or the second fastener 32 to move, and lock or unlock the first fastener 31 or the second fastener 32. The moving mode of the moving member 33 may be translation or rotation around a certain rotation axis, and when the moving mode or moving direction of the moving member 33 is different, the unlocking locking member is also different.

As shown in fig. 3 to 5, the cap portion can be locked by different parts of the locking device to open the cap. Because the locking device 3 can unlock different parts by using different moving modes or moving directions of one moving member 33, different covers can be opened only by controlling the moving mode of the moving member 33, and different cover opening operations can be realized.

Specifically, since the first cover 21 and the second cover 22 are generally thin-shell or plate-like structures, the surfaces thereof are flat or smooth curved surfaces, which is not conducive to being fixed with other parts. In order to fasten the first fastening member 31 and the second fastening member 32 on the free end 212 of the first cover 21 or the free end 222 of the second cover 22, an upper protrusion 212a capable of fastening with the first fastening member 31 is disposed on the free end 212 of the first cover 21, and a lower protrusion 222a capable of fastening with the second fastening member 32 is disposed on the free end 222 of the second cover 22. The upper protrusion 212a and the lower protrusion 222a may be hooked with the first fastener 31 or the second fastener 32, so that the first fastener 31 or the second fastener 32 is hooked with the corresponding cover.

For example, in order to fix and fasten the first fastening member 31, the second cover 22 is provided with a first horizontal rotating shaft 24, the first fastening member 31 is hinged to the second cover 22 through the first horizontal rotating shaft 24, the first fastening member 31 is provided with a first fastening portion 311 and a pushing portion 312, when the pushing portion 312 is pushed by the moving member 33, the first fastening member 31 rotates around the first horizontal rotating shaft 24, so that the first fastening portion 311 and the edge of the first cover 21 are disengaged. The first horizontal rotating shaft 24 is usually disposed outside the second cover 22 and close to the edge of the second cover 22, so that the first fastener 31 can rotate around the first horizontal rotating shaft 24, and the first hook portion 311 of the first fastener 31 can be hooked with or unhooked from the edge of the first cover 21 or the upper protrusion 212a of the free end 212 of the first cover 21. The first engaging member 31 further includes a pushing portion 312, and when the moving member 33 moves, the pushing portion 312 abuts against the pushing portion and applies an acting force to the first engaging portion 311, so that the whole first engaging portion 311 rotates under the acting force of the moving member 33 and disengages from the free end 212 of the first cover 21.

In order to fix and fasten the second cover 22 and the second fastener 32, the bottom cover 23 is provided with a second horizontal rotating shaft 25, the second fastener 32 is hinged to the bottom cover 23 through the second horizontal rotating shaft 25, the second fastener 32 is provided with a second hook portion 321 and a pressing portion 322 on two sides opposite to the second horizontal rotating shaft 25, and when the pressing portion 322 receives the acting force of the moving member 33, the second fastener 32 rotates around the second horizontal rotating shaft 25, so that the second hook portion 321 and the free end 222 of the second cover 22 are disengaged. The second horizontal shaft 25 is located inside the second cover 22 and near the edge of the bottom cover 23. The second horizontal rotation shaft 25 is disposed in the middle of the second fastener 32, and the second hook portion 321 and the pressing portion 322 are disposed at two ends of the second fastener 32 opposite to the second horizontal rotation shaft 25, so that when the pressing portion 322 is acted by the moving member 33, such as pressing force, the pressing portion 322 can rotate around the second horizontal rotation shaft 25 and drive the second hook portion 321 at the other end to rotate, and the second hook portion 321 can be disengaged from the free end 222 of the second cover 22 by its own rotational displacement.

Because the first fastening member 31 and the second fastening member 32 are respectively used for fastening and locking the first cover 21 and the second cover 22, in order to implement the locking control of the first cover 21 and the second cover 22 at the same time, the locking device 3 further needs a moving member 33 capable of controlling the locking process of the first fastening member 31 or the second fastening member 32 through its own movement. In order to realize the engagement and linkage between the moving member 33 and the first locking member 31 or the second locking member 32 located at different positions, the moving member 33 may have the following structure: specifically, the moving member 33 may have a pressing surface 331 facing the inner side of the lid in the radial direction and a boss 332 disposed on the pressing surface 331, the pressing surface 331 is attached to the outer side surface of the pressing portion 322 facing the outer side of the lid in the radial direction, and may slide up and down along the outer side surface of the pressing portion 322, and the top end of the boss 332 abuts against the pushing portion 312 to push the pushing portion 312 when the moving member 33 slides or rotates.

The pressing surface 331 can be used to transmit external pressure, and because the pressing surface 331 is attached to the outer side surface of the pressing portion 322 on the second fastener 32, when a user applies pressure to a corresponding portion of the pressing surface 331, the pressing surface 331 transmits the pressure to the pressing portion 322 of the second fastener 32, and the second fastener 32 rotates around the second horizontal rotating shaft 25 under the action of the pressure, so that the second hook 321 and the second cover 22 can be disengaged.

In order to prevent the moving member 33 from sinking into the inner side of the cup lid and failing to recover after being pressed, an elastic member 34 is further disposed between the pressing portion 322 and the bottom cover 23. The elastic member 34 may be a pressing spring or the like, and one end of the elastic member 34 is usually abutted against the inner side of the pressing portion 322, and the other end is fixed to the side surface of the bottom cover 23. Thus, after the second cover 21 is opened by pressing the movable member 33, the movable member 33 can be automatically returned by the elastic force of the elastic member 34.

The pressing surface 331 of the moving element 33 is further provided with a boss 332, and because the top end of the boss 332 abuts against the pushing portion 312 of the first fastening member 31, no matter the moving element 33 moves horizontally toward the first fastening member 31 or rotates around the second horizontal rotating shaft 25 in close contact with the second fastening member 32, the top end of the boss 332 applies an acting force to the pushing portion 312, so that the pushing portion 312 changes the position, and the first fastening member 31 and the first cover 21 are driven to be disengaged.

Thus, by controlling different moving modes and moving directions of the moving member 33, the first cover 21 can be controlled to be opened independently or the first cover 21 and the second cover 22 can be controlled to be opened simultaneously. If the moving member 33 can be controlled to move upward and horizontally to release the locking between the first fastening member 31 and the first cover 21, so as to open the first cover 21 alone, or the moving member 33 can be controlled to rotate and press the pressing portion 322 of the second fastening member 32, so as to release the locking between the second fastening member 32 and the second cover, at this time, the pushing portion 312 on the first fastening member 31 can also release the locking between the first cover 21 and the pushing portion of the moving member 33, so as to open the second cover at the same time.

Further, the top end of the boss 332 is an arc surface. Therefore, the top end of the boss 332 has a smooth transition, so that no matter the boss is horizontally moved to abut against the pushing part 312 of the first clamping member 31 or the pushing part 312 is changed in position through self-rotation, the relative movement between the top end of the boss 332 and the pushing part 312 is smooth, and dead points such as sharp edges and corners are avoided.

Through the above structure of the moving member 33, the moving member 33 can respectively control the first fastening member 31 or the second fastening member 32 to be fastened or disengaged with the corresponding first cover 21 or the second cover 22 through the self-translation or rotation, so that the fastening and locking operations of the cup cover are simple and convenient. Typically, the displacement member 33 is arranged to translate in a generally upward direction along the lid skirt when the displacement member is arranged to translate.

Because the locking device 3 is located outside the first cover body 21 and the second cover body 22, that is, on the side edge of the cup lid, when the user uses the cup lid daily, the user may easily press the moving member 33 by mistake, so that the second fastening member 32 is disengaged from the second cover body 22, and the cup lid is opened abnormally. In order to avoid the above phenomenon, a limit structure may be designed on the bottom cover 23 so that the moving member 33 must be pressed down through a specific operation. Specifically, the moving member 33 has a positioning portion 333 protruding to the inner side of the lid in the radial direction; the edge of the bottom cover 23 is provided with a limiting part 231 protruding to the radial outer side of the cup cover, and the limiting part 231 is arranged to be abutted against the positioning part 333 to limit the rotation of the moving member 33.

Thus, in general, the limiting portion 231 of the edge of the bottom cover 23 protrudes outward in the radial direction of the cup cover to abut against the positioning portion 333 inside the moving member 33, so that the moving member 33 cannot rotate around the second horizontal rotating shaft 25, and only the moving member 33 moves to a certain extent, so that the moving member 33 can rotate after the positioning portion 333 avoids the limiting portion 231. Optionally, the moving member 33 may be made to move downwards along the lid edge, so that the positioning portion 333 inside the moving member 33 is staggered from the limiting portion 231 on the edge of the bottom cover 23, and then the outer side surface of the moving member 33 opposite to the pressing surface 331 may be pressed, so that the moving member 33 rotates.

In addition, optionally, in order to adjust the moving member 33, a positioning structure may be disposed between the moving member 33 and the second clamping member 31. Fig. 6 is a schematic structural diagram of a positioning structure of a moving element according to an embodiment of the present invention. As shown in fig. 6, at least one positioning groove 323 is formed on the outer side surface of the pressing portion 322 at an interval along the sliding direction of the moving member 33, and a positioning protrusion 334 which can be selectively engaged with the positioning groove 323 is formed on the pressing surface 331. In this way, the moving member 33 can be engaged with any one of the positioning recesses 323 of the second engaging member 32 through the positioning protrusions 334, so that the position of the moving member 33 relative to the first engaging member 31 and the second engaging member 32 can be conveniently adjusted, and the reliability of the locking device 3 can be ensured.

In addition, in order to make the moving member 33 apply an acting force when translating, a surface of the moving member 33 facing the radial outer side of the cup cover is provided with a skidproof bump 335 or skidproof line. Therefore, the outer side surface of the moving member 33 has strong friction or a proper acting point with the outside, and a user can conveniently carry out translational pushing on the moving member 33.

In addition, optionally, a heating device 4 can be arranged on the cup body 1 of the water cup to heat the water contained in the water cup. In order to ensure that the water vapor generated in the cup body 1 can escape normally during heating, the second cover 22 of the cup can be provided with a steam outlet 223, and the bottom cover 23 can be provided with a water inlet 232. At this time, after the first cover body 21 and the second cover body 22 are closed, the water cup is in a closed state and can be used for storing water inside; when only the first cover 21 is opened, the steam outlet 222 is exposed and can be used for steam discharge during heating, and the drinking port 232 is still closed; when both the first cover 21 and the second cover 22 are opened, the drinking hole 232 is opened, and water can be poured through the drinking hole 232. In order to ensure the sealing of the water cup, a water inlet seal 232a or a steam seal 223a is disposed on the water inlet 232 and the steam outlet 222, respectively, and the water inlet seal 232a and the steam seal 223a are generally made of soft materials such as rubber or silica gel.

Optionally, be provided with control panel 5 in the cup 1 to heating status such as power on-off for controlling heating device 4, and one side of cup 1 is equipped with panel 6, has the clearance between panel 6 and the cup 1 lateral wall, can set up control elements such as button, display screen on the panel 6.

In this embodiment, the cup includes a cup body having an opening and a cup cover covering the cup body, the cup cover includes a first cover body, a second cover body, and a bottom cover, the fixed end of the first cover body and the fixed end of the second cover body are both hinged to the bottom cover through a horizontal hinge shaft, the cup further includes a locking device, the locking device includes a first fastener capable of being fastened to the free end of the first cover body, a second fastener capable of being fastened to the free end of the second cover body, and a moving member capable of moving relative to the bottom cover, the moving member is configured to move in two opposite directions to respectively trigger the first fastener and the second fastener to disengage from the fastener. Therefore, different cover bodies can be opened by utilizing different clamping pieces only by controlling the moving mode of the moving piece in the locking device, and different cover opening operations are realized.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water cup comprises a cup body (1) with an opening and a cup cover (2) arranged on the cup body (1) in a covering mode, wherein the cup cover (2) comprises a first cover body (21), a second cover body (22) and a bottom cover (23), a fixed end (211) of the first cover body (21) and a fixed end (221) of the second cover body (22) are hinged to the bottom cover (23) through a horizontal hinged shaft (26), the water cup is characterized by further comprising a locking device (3), the locking device (3) comprises a first clamping piece (31) capable of being clamped at a free end (212) of the first cover body (21), a second clamping piece (32) capable of being clamped at a free end (222) of the second cover body (22) and a moving piece (33), the moving piece (33) is arranged to move towards two opposite directions to trigger the first clamping piece (31) and the second clamping piece (32) to be separated from clamping, and the first clamping piece (31) is provided with a first clamping portion (311) and a pushing portion (312);

the moving piece (33) is provided with a pressing surface (331) facing the radial inner side of the cup cover (2) and a boss (332) arranged on the pressing surface (331), the second clamping piece (32) is provided with a pressing portion (322), the pressing surface (331) is attached to the outer side surface of the pressing portion (322) facing the radial outer side of the cup cover (2) and can slide up and down along the outer side surface of the pressing portion (322), the top end of the boss (332) is abutted to the pushing portion (312) so as to push the pushing portion (312) when the moving piece (33) slides or rotates, wherein the pressing portion (322) is used for enabling the second clamping piece (32) to rotate under the action of pressure when the acting force of the moving piece (33) is received.

2. The cup according to claim 1, wherein the free end (212) of the first cover (21) is provided with an upper protrusion (212 a) capable of engaging with the first engaging member (31), and the free end (222) of the second cover (22) is provided with a lower protrusion (222 a) capable of engaging with the second engaging member (32).

3. The cup according to claim 1 or 2, wherein a first horizontal rotating shaft (24) is disposed on the second cover (22), the first engaging member (31) is hinged to the second cover (22) through the first horizontal rotating shaft (24), and when the pushing portion (312) is pushed by the moving member (33), the first engaging member (31) rotates around the first horizontal rotating shaft (24) to disengage the first engaging portion (311) from the free end (212) of the second cover (22).

4. The cup according to claim 3, wherein a second horizontal rotating shaft (25) is disposed on the bottom cover (23), the second fastening member (32) is hinged to the bottom cover (23) through the second horizontal rotating shaft (25), a second fastening portion (321) and a pressing portion (322) are disposed on two sides of the second fastening member (32) opposite to the second horizontal rotating shaft (25), and when the pressing portion (322) receives the acting force of the moving member (33), the second fastening member (32) rotates around the second horizontal rotating shaft (25) to disengage the second fastening portion (321) from the free end (222) of the second cover (22).

5. The cup as claimed in claim 1, characterized in that the moving member (33) has a positioning portion (333) projecting radially inward of the lid (2);

the edge of the bottom cover (23) is provided with a limiting part (231) protruding to the radial outer side of the cup cover (2), and the limiting part (231) is arranged to be abutted against the positioning part (333) so as to limit the moving part (33) to rotate.

6. The cup according to claim 4 or 5, wherein an elastic member (34) is disposed between the pressing portion (322) and the bottom cover (23).

7. The cup as claimed in claim 1 or 5, wherein the outer side of the pressing portion (322) is provided with at least one positioning groove (323) at intervals along the sliding direction of the moving member (33), and the pressing surface (331) is provided with a positioning bump (334) which can be selectively clamped in the positioning groove (323).

8. The cup according to claim 1 or 5, characterized in that the surface of the moving member (33) facing the radial outside of the cup cover (2) is provided with anti-skid projections (335) or anti-skid threads.

9. A cup as claimed in claim 1 or 5, characterised in that the top of the boss (332) is a curved surface.