Patent Publication Number: US-2021171244-A1

Title: Thermal cup

Description:
TECHNICAL FIELD 
     The invention relates to cup technical field, more specifically, to a thermal cup. 
     BACKGROUND OF THE INVENTION 
     Cups are essential for daily drinking water. At present, most of the heat preservation cups include a cup body and a cover that covers the opening of the cup body; a sealing ring is arranged in the cover, the cover is connected with the opening in threaded connection, so that the sealing ring is pressed between the opening and the cover to preserve heat in the cup body. However with threaded connection, the users have to rotate the cover for a plurality of turns to open or close the cover, it brings great inconvenience. And, when the pressure inside the cup is greater than or less than the external pressure, the threaded connection of the opening and the cover will be strengthen, it takes very vigorous power to turn the cover and open it, it is inconvenient. In some of the heat preservation cups, the cover is fastened and clamped with the cover. Although the cover is easy to open, the sealing performance is worse, it results in poor heat preservation effect. 
     SUMMARY OF THE INVENTION 
     The objection of the present invention is to provide a thermal cup, which aims at solving the technical problem that the cover and the opening of the cup body are connected in threaded connection in the prior art, the user must rotate the cover multiple times for opening or closing it, which brings great inconvenience. 
     In order to achieve the above object, the invention provides a thermal cup, which includes a cup body with an opening and a cover with a side wall and a top wall and covered the opening, the top wall has an upper face and a bottom face. 
     The thermal cup also includes a driver installed on the upper face of the top wall of the cover, a promoter installed on the bottom face of the top wall of the cover and a sealing ring made of elastic material and arranged between the cover and the promoter. The promoter passes through the top wall to connect with the driver. 
     When the cover covers at the opening, the promoter is inside the opening, and a gap is formed among its inner wall of the opening, the top wall of the cover and the promoter, the sealing ring is accommodated in the gap; when it needs to close the cover, the driver is rotated to bring the promoter to move upwards, the gap is reduced and the sealing ring is bent to seal the gap so that the cover and the opening are sealed connection; when it needs to open the cover, the driver is rotated reversely to bring the promoter to move downwards, the sealing ring elastically resets to break the sealed connection of the opening and the cover. 
     The sealing ring includes a first annular connecting portion which is connected with the bottom face of the top wall of the cover, the first annular connecting portion extends downward to form a first annular sealing portion, and its outer diameter of the promoter is gradually reduced from its bottom to its top to form a tapered pushing portion, the tapered pushing portion contacts with its inner side of the first annular sealing portion; the first annular sealing portion is bent under push of the tapered pushing portion to seal the gap. 
     Its outer wall of the first annular sealing portion is provided with a first sealing groove, and its inner wall of the opening is provided with an arc-shaped convex part; the first sealing groove is sealed connection with the arc-shaped convex part under push of the tapered pushing portion. 
     Its top of the sealing ring is provided with a first annular connecting groove, its top wall of the cover is provided with a first annular connecting projection inserted the first annular connecting groove. 
     The sealing ring includes a second annular connecting portion which contacts to the bottom face of the top wall of the cover; the second annular connecting portion extends downward to form a second annular sealing portion; the promoter has a connecting portion; the second annular sealing portion is adapted to the connecting portion; the second annular sealing portion is bent under push of the promoter to seal the gap. 
     Its lower end of the second annular sealing portion is provided with a second annular connecting protrusion; the promoter has a stepped groove outside the connecting portion; the second annular connecting protrusion is inserted the stepped groove with its interference fit. 
     Its top of the first annular connecting portion extends outwards to form an annular sealing table, its top face of the annular sealing table contacts with the bottom face of the top wall of the cover; when the cover covers the opening, its bottom face of the ring sealing table contacts with the opening. 
     At least one elastic member is arranged between the bottom top wall of the cover and the promoter. 
     The driver has a driving plate, one end of the driving plate is provided with two mounting seats enclosed by a connecting plate and two side plates arranged on both sides of the connecting plate; the two side plates are provided with a pair of eccentrical holes; a shaft is inserted the pair of eccentrical holes and arranged in parallel with the driving plate; one side of two side plates is far to the shaft to form a distal shaft side, the other side of the two side plates is near to the shaft to form a near shaft side; the promoter is provided with two pushing rods, and its upper portion of the pushing rod is provided with a hole; the shaft is rotatably connected to the hole; when it is need to lock the cover, the driving plate is rotated down to drive the distal shaft side to contact with the top face of the cover, so that the pushing rods is moved upward to push the sealing ring to seal the gap; when it needs to open the cover, the driving plate is rotated upward to drive the near shaft side to contact with the top face of the cover, so that the pushing rod is moved downward, the sealing ring resets, thereby unlocking the sealed connection of the cup body and the cover. 
     The distal shaft face and the near shaft face are perpendicular to each other; the distal shaft side is parallel to the driving plate, and the near shaft side is perpendicular to the driving plate. 
     The top wall of the cover is depressed to form a receiving groove, and the receiving groove is provided with a first step groove and a second step groove slot arranged up and down; the second step groove is provided with two through holes; the upper portions of the pushing rods are respectively movable through the two through holes and rotatably connected to the shaft. 
     The driving plate is semicircular, and the driving plate is provided with a circular or elliptical through hole. 
     The promoter is provided with at least one pushing rod at its upper end, the pushing rod is movable through the cover to connect with the driver. 
     Its middle of the promoter is provided with a one-way exhaust valve. 
     The thermal cup also includes an outer cover, the outer cover is covered to the cup body, and the cover is located within the outer cover. 
     The thermal cup in the present invention has the following advantages: the cover is covered on the opening of the cup body, the driver brings the promoter up to reduce the gap among the opening and the promoter. The sealing ring is bent under the push of the promoter to completely fill with the gap, so that the opening and the cover are sealed connection, and the inside of the cup body is sealed. Similarly, the driver brings the promoter down to increase the gap between the opening and the promoter, the sealing ring resets to unlock the sealed connection of the opening and the cover. Therefore, the cover can be locked by rotating the driving plate downwards and be opened by rotating the driving plate upwards. It is very convenient to open and close the cover. The thermal cup is solved the disadvantages of the prior art. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In order to explain more clearly the technical proposals in the embodiment of the invention, the following will briefly introduce the drawings that need to be used in the embodiment or the prior art description. It is obvious that the drawings in the following description are only some embodiments of the invention, and for the ordinary technical personnel in the field, other drawings can be obtained according to these drawings without paying creative labor. 
         FIG. 1  is a section view of the thermal cup according to the present invention. 
         FIG. 2  is a section view of the sealing ring of the thermal cup according to the present invention. 
         FIG. 3  is an exploded view of the thermal cup according to the present invention. 
         FIG. 4  is a locking state view of the cover of the thermal cup according to the present invention. 
         FIG. 5  is an unlocking state view of the cover of the thermal cup according to the present invention. 
         FIG. 6  is a section view of the thermal cup according to the present invention. 
         FIG. 7  is a section view of another sealing ring of the thermal cup according to the present invention. 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     Embodiments of the present invention are described in detail below, and an example of the embodiment is shown in the attached drawings, in which the same or similar label represents the same or similar element or element with the same or similar function. The embodiments described below by reference to the attached drawings are exemplary and are intended to explain embodiments of the present invention and cannot be understood as restrictions in the present invention. 
     In the description of embodiments of the present invention, it is important to understand that the azimuth or position relationships indicated by the terms “length”, “width”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., are based on the azimuth or position relationship shown in the attached figure only to facilitate the description and simplification of the embodiment of the invention, Instead of indicating or implying that the device or element must have a specific azimuth, constructed and operated in a specific azimuth, it cannot be understood as a limitation on the present invention. 
     In addition, the terms “the first”, “the second” are for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, the characteristics of “the first” and the “the second” are defined, which may include one or more of the features either explicitly or implicitly. In the description of embodiments of the invention, the “multiple” has the meaning of two or more, unless specifically defined otherwise. 
     In the embodiment of the invention, unless otherwise specified and limited, the terms “install”, “connect”, “fix” and other terms should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or a whole, which can be a mechanical connection or an electric connection. It can be directly connected or indirectly connected by intermediate medium, which can be the internal connection of two components or the interaction between two components. For ordinary technical personnel in the field, the specific meaning of the above terms in embodiments of the present invention can be understood according to the specific circumstances. 
     Referring to  FIG. 1  and  FIG. 3 , the present invention discloses a thermal cup, which includes a cup body  100  with an opening  101 , a cover  200  with a side wall  201  and a top wall  203  and covered the opening  101 , a promoter  300 , a sealing ring  400  and a driver  500 . The top wall  203  has a top face and a bottom face  204 . 
     Referring to  FIG. 1 , the cover  200  covers the opening  101  of the cup body  100 . The driver  500  is installed on the top face of the top wall  203  of the cover  200 , the promoter  300  is installed on the bottom face of the top wall  203  of the cover  200 . The promoter  300  passes through the top wall  203  to connect with the driver  500 . Specifically, the promoter  300  is provided with at least a pushing rod  310  at its upper end. The pushing rod  310  is movable through the cover  200  to connect with the driver  500 . The sealing ring  400  is made of elastic material and arranged between the cover  200  and the promoter  300 . 
     Specifically, the cup body  100  is a double-layer structure, which is beneficial to the internal heat preservation. Referring to  FIG. 3 , the cover  200  is a groove enclosed by the side wall  201  and the top wall  203 . When the cover  200  covers the opening  101 , the opening  101  lies inside the side wall  201 . A gap is formed among the opening  101 , the top wall  203  of the cover  200  and the promoter  300 , the sealing ring  400  is located in the gap. 
     Preferably, the middle of the top wall  203  is depressed to form a bottom face of a receiving groove  202 . The side wall  201  is provided with a plurality of vertical grooves  250  which is convenient for the user to grasp the cover  200 . 
     Referring to  FIG. 1 , the driver  500  is installed in the receiving groove  202 , the promoter  300  is installed under the bottom face of the receiving groove  202 . The pushing rod  310  is movable through the bottom face of the receiving groove  202  to connect with the driver  500 . When the cover  200  covers the opening  101  of the cup body  100 , the opening  101  lies between the receiving groove  202  and the side wall  201 , the promoter  300  are located in the opening  101  of the cup body  100 . The gap is formed among the opening  101 , the receiving groove  202  and the promoter  300 , the sealing ring  400  is located in the gap. 
     Referring to  FIG. 1  and  FIG. 2 , its top of the sealing ring  400  is provided with a first annular groove  410 , the bottom face  204  of the top wall  203  of the cover  200  is provided with a first annular protrusion  210 , the first annular protrusion  210  is inserted the first annular groove  410  with its interference fit so that the sealing ring  400  is stably connected with the top wall  203  of the cover  200 . 
     Referring to  FIG. 1 ,  FIG. 2  and  FIG. 3 , the sealing ring  400  includes a first annular connecting portion  420 . Its top of the first annular connecting portion  420  is provided with the first annular groove  410 . The first annular connecting portion  420  extends downward to form a first annular sealing portion  430 . And the outer diameter of the promoter  300  is gradually reduced from its bottom to its top to form a tapered pushing portion  320  that is in contact with the inner side of the first annular sealing portion  430 . The driver  500  drives the tapered pushing portion  320  of the promoter  300  to move up, thereby reducing the gap among the opening  101 , the cover  200  and the promoter  300 . The first annular sealing portion  430  is bent under the push of the tapered pushing part  320  to seal the gap, so that the opening  101  and the cover  200  are sealed connection, and the inside of the cup body  100  is sealed, thereby realizing heat preservation. Similarly, the driver  500  drives the tapered pushing portion  320  of the prompter  300  to move down, the gap among the opening  101 , the cover  200  and the prompter  300  increases, the first annular sealing portion  430  resets to unlock the sealing connection of the opening  101  and the cover  200 . 
     Preferably, the outer wall of the first annular sealing portion  430  is provided with a first sealing groove  440 , and its inner wall of the opening  101  of the cup body  100  is provided with an arc-shaped convex part  110 . The first sealing groove  440  is sealed and clamped with the arc-shaped convex part  110  under the push of the tapered pushing portion  320 , so that the sealing effect is better. 
     Referring to  FIG. 1 ,  FIG. 2  and  FIG. 3 , the top of the first annular connecting portion  420  extends outwards to form the annular sealing table  480 , and the top face of the annular sealing table  480  contacts with the bottom face of the top wall of the cover  200 . When the cover  200  covers the opening  101 , the bottom face of the ring sealing table  480  is sealed with the opening  101 , so that the sealing effect is better. 
     Referring to  FIG. 3  and  FIG. 4 , the driver  500  has a driving plate  510 . One end of the driving plate  510  is provided with two mounting seats  520 , The mounting seat  520  has a connecting plate  501  and two side plates  502  and  503  arranged on both sides of the connecting plate  501 . Each of the mounting seats  520  is provided with an installing slot  521 , the two side plates are provided with a pair of eccentrical holes. A shaft  522  is inserted the pair of eccentrical holes and arranged in parallel with the driving plate  510 . So that one side of two side plates, far to the shaft  522 , forms a distal shaft side  523 , the other side of the two side plates, near to the shaft  522 , forms a near shaft side  524 . Preferably, the distal shaft side  523  and the near shaft side  524  are perpendicular to each other. The distal shaft side  523  is arranged parallel to the driving plate  510 , and the near shaft side  524  is arranged perpendicular to the driving plate  510 . 
     Referring to  FIG. 3 , its upper end of the promoter  300  is symmetrically provided with two of the pushing rods  310 , and the upper portions of the two pushing rod  310  are provided with a hole  311  respectively. The bottom face of the receiving groove  202  is provided with a pair of through holes  220 . The upper portions of the two pushing rods  310  are respectively movable through the through holes  220 , and the two shafts  522  are respectively rotatably connected to the holes  311 . 
     Reference  FIG. 1  and  FIG. 4 , when it needs to lock the cover  200 , the driving plate  500  is rotated down to drive the distal shaft side  523  to contact with the bottom face of the receiving groove  201 , so that the two pushing rods  310  is moved upward to push the sealing ring  400  to seal the gap, thereby the cup body  100  and the cover  200  are connected in a seal way. Reference  FIG. 1  and  FIG. 5 , when it needs to open the cover  200 , the driving plate  500  is rotated up to drive the near shaft side  524  contact with the bottom face of the receiving groove  201 , so that the two pushing rods  310  is moved downward, thereby unlocking the sealed connection of the cup body  100  and the cover  200 . Then the covers  200  can be taken off from the cover  200 . 
     In the present invention, the cover  200  can be locked with rotating down the driving plate  510  and opened with rotating up the driving plate  510 . It is very convenient and solves the problems of the prior art that the cover and the cup body are connected in threaded way. 
     Referring  FIG. 4 , the receiving groove  202  has a first step slot  230  and a second step slot  240  arranged up and down. Preferably, the first step slot  230  and the second step slot  240  are cylindrical. When the driving plate  510  is rotated down to lock the cover  200 , the driving plate  510  is accommodated in the first step slot  230  and parallel with the bottom face of the receiving groove  202 , which make the thermal cup more beautiful. 
     Referring  FIG. 1 ,  FIG. 3  and  FIG. 6 , the promoter  300  is installed at the bottom face of the receiving groove  202 , the top portion of the promoter  300  is provided with a avoiding groove  380  for avoiding the receiving groove  202 . 
     Referring  FIG. 4  and  FIG. 6 , the driving plate  510  is semicircular, and the driving plate  510  is provided with a circular or elliptical through hole  511  at its middle, which is convenient for the users to rotate the driving plate  510  with their fingers to buckle the driving plate  510 . 
     Referring to  FIG. 1  and  FIG. 3 , at least one elastic member  120  is arranged between the receiving groove  201  and the promoter  300 . Preferably, the number of the elastic member  120  is two. The elastic member  120  is a circular silica gel column with excellent elasticity. The promoter  300  is provided with a pair of first mounting grooves  381  at the avoiding groove  380 , and two second mounting grooves (not shown) which are correspondence with the two first mounting grooves  381  are arranged on the bottom face of the receiving groove  201 . Two ends of the elastic member  120  are respectively inserted the first mounting groove  381  and the second mounting groove. The elastic member  120  acts as a spring, when the cover  200  is locked, the elastic member  120  is in a compressed state, and when the cover  200  is opened, the elastic member  120  resets to push the promoter  300  down, so that the promoter  300  moves down smoothly and prevents the promoter  300  from being stuck so that the cover  200  cannot be opened. 
     Referring to  FIG. 1  and  FIG. 6 , the bottom of each of the pushing rod  310  is provided with a gasket  390 . Correspondingly, the cover  200  is provided with a gasket mounting groove  270  in each of the through-holes  220 . When the driving plate  510  is rotated down to lock the cover  200 , the gasket  390  contacts with the gasket mounting groove  270 , so that the through-hole  220  is sealed and the heat-insulating effect of the thermal cup is better. 
     Referring to  FIG. 1  and  FIG. 3 , the middle of the promoter  300  is provided with a one-way exhaust valve  600 . The one-way exhaust valve  600  has an elastic valve portion  610 . The upper portion of the elastic valve portion  610  has a column  620  with a limiting portion  621  at its top. The middle of the promoter  300  is provided with a connecting hole  360 . Both sides of the connecting hole  360  are provided with a pair of air holes  370 . The column  620  is inserted the connecting hole  360  with the limiting portion  621  connecting with the promoter  300 . The elastic valve portion  610  contacts with the bottom face of the promoter  300  and cover the two air holes  370 . 
     When the internal air pressure of the cup body  100  is less than the external air pressure, the driving plate  510  is turned upward to open the cover  200 , and the external gas will enter through the through hole  220  and push the elastic valve portion  610  through the air holes  370  to form a gap between the elastic valve portion  610  and the promoter  300 , from which the external gas enters the inside of the cup body  100 , thereby balancing the internal and external pressure of the cup body  100 , preventing the cover  200  from being unable to open. When the internal air pressure of the cup body  100  is greater than the outside air pressure, the driving plate  510  is rotated downward to lock the cover  200 , and the inner space of the cup body  100  is instantaneously enlarged due to the moving-up of the promoter  300 , so that the internal pressure of the cup body  100  is reduced, the cover  200  is prevented from being pushed out during the locking process. 
     Referring to  FIG. 4 , the thermal cup also includes an outer cover  700 . The outer cover  700  covers the opening  101  of the cup body  100 , and the cover  200  is located within the outer cover  700 . The outer cover  700  can be used as a bowl. 
     Preferably, the sealing ring  400  is made of silica or rubber. 
     Referring to  FIG. 6  and  FIG. 7 , in another embodiment of the present invention, the seal ring  400  includes a second annular connecting portion  450 . The second annular connecting portion  450  is connected to the top wall of the cover  200 . Specifically, the top portion of the second annular connecting portion  450  is provided with the first annular connecting groove  410 . Preferably, the first annular protrusion  210  is inserted the first annular connecting groove  410  with its interference fit so that the sealing ring  400  is stably connected with the top wall of the cover  200 . The second annular connecting portion  450  extends downward to form the second annular sealing portion  460 . The promoter  300  has a connecting portion  330 . The second annular sealing portion  460  is adapted to be fitted to the connecting portion  330 . The second annular sealing portion  460  is bent to seal the gap under the push of the promoter  300 . 
     Preferably, the lower end of the second annular sealing portion  460  is provided with a second annular connecting protrusion  470 . The promoter  300  has a stepped groove  340  outside the connecting portion  330 . The second annular connecting protrusion  470  is inserted the stepped groove  340  with its interference fit so that the sealing ring  400  is stably connected with the promoter  300 . 
     Referring to  FIG. 5 , the inner wall of the opening  101  of the cup body  100  is provided with a sealing groove  120 . The driver  500  drives the promoter  300  to move up, and the second annular connecting portion  450  is pressed to seal the gap among the opening  101 , the promoter  200  and the top wall of the cover  200 , and the sealing groove  120  is sealed. So that so that the inside of the cup body  100  is sealed and the heat preservation is realized. Similarly, the driver  500  drives the promoter  300  to move down, and the second annular connecting portion  450  flexibly resets so that the cover  200  can be opened from the opening  101  of the cup body  100 . 
     The above is a further detailed description of the invention in combination with a specific preferred embodiment, and it cannot be concluded that the specific implementation of the invention is limited to these instructions. For the general technical personnel in the technical field to which the invention belongs, without being separated from the conception of the invention, the architecture form can be flexible and changeable, and a series of products can be derived. If it is just making a number of simple deductions or substitutes should be regarded as falling within the scope of patent protection determined by the claim submitted by the present invention.