Patent Publication Number: US-2023148802-A1

Title: Novel foam pump

Description:
TECHNICAL FIELD 
     The present disclosure relates to a foam pump. 
     BACKGROUND 
     The statements here only provide the background information related to the present disclosure, and do not necessarily constitute the prior art. 
     With the improvement of the living standard, people are also pursuing the convenience of daily necessities. For example, for bottled liquid, a liquid pump is usually mounted at an outlet of a bottle body, and the liquid in the bottle body can flow out by pressing the pump. 
     The bottled liquid is in a liquid state when used, such as a liquid detergent. However, some liquids still need to be kneaded into foam during use, such as disinfectant. Traditionally, the liquid is pumped out by pressing a pump body and is then rubbed on the hands to form foam, which is more troublesome. 
     Later, there is a foam pump. The foam pump makes hand-washing foam from hand sanitizer through motor mixing and other structures, and the hand-washing foam is directly pumped out from an outlet of a bottle body for use. However, the existing foam pump still has an unreasonable structural design. As a result, when the bottle body falls off, a battery, a pump body and other structures easy to loosen and fail to work. Meanwhile, there is also a problem of difficulty in assembling. 
     Therefore, it is necessary to study a new technical solution to solve the above problems. 
     SUMMARY 
     In order to solve the defects and shortcomings in the prior art, the present disclosure provides a novel foam pump. A battery and a foam pump body are mounted on a fixed support, and the fixed support is then mounted in a shell main body; and mounting and fixing are completed by means of cooperation between a positioning clamping slot and a positioning clamping bulge. The novel foam pump has the advantages of simple assembling and high assembling stability. Thus, when the novel foam pump falls off, the position stability of the foam pump body and the battery can also be guaranteed. 
     In order to achieve the above-mentioned objective, the present disclosure adopts the following technical solution: 
     A novel foam pump includes a shell main body and a nozzle arranged on an upper side of the shell main body; a battery and a foam pump body are arranged in the shell main body; the nozzle is provided with a circuit board and a foam outlet; the circuit board is electrically connected to the battery and the foam pump body; the foam pump body is provided with an input end and an output end; the input end of the foam pump body is connected with a suction pump; the suction pipe extends out of the shell main body; the output end of the foam pump body is connected with the foam outlet; and the circuit board is electrically connected with a trigger switch. 
     A fixed support is arranged inside the shell main body; the fixed support has an upper mounting position and a lower mounting position; the foam pump body is mounted at the upper mounting position; the battery is arranged at the lower mounting position; a circumferential surface of the fixed support is provided with a positioning clamping slot; and the shell main body is provided with a positioning clamp bulge matched with the positioning clamping slot. 
     In some embodiments, a first placement place is arranged on a circumferential side of the lower mounting position; a second placement place is arranged on an upper side of the upper mounting position; and a buffer space is reserved between the upper mounting position and the lower mounting position. 
     In some embodiments, a gap is arranged on a circumferential side wall of the upper mounting position. 
     In some embodiments, the trigger switch includes a touch switch and a trigger sensor which are arranged on the circuit board; the touch switch is arranged on an upper side surface of the nozzle; the trigger sensor is arranged on a lower side surface of the nozzle; and a sensing region of the trigger sensor is correspondingly arranged below the foam outlet. 
     In some embodiments, the trigger sensor is an infrared sensor. 
     In some embodiments, a connecting cap connected with a bottle body is detachably arranged below the nozzle; and a connecting slot connected with a pourer is formed between the connecting cap and the shell main body. 
     In some embodiments, a pressing spacer is arranged in the connecting cap. 
     In some embodiments, the nozzle includes an upper cover and a lower cover; the lower cover upwards extends to form an elastic fastener; the upper cover is provided with a fastening hole matched with the elastic fastener; and the upper cover and the lower cover are assembled to form a mounting cavity for mounting the circuit board. 
     Compared with the prior art, the present disclosure has outstanding advantages and beneficial effects. Specifically, it can be known according to the above technical solution that the battery and the foam pump body are mainly mounted on the fixed support, and the fixed support is then mounted in the shell main body. Mounting and fixing are completed by means of the cooperation between the positioning clamping slot and the positioning clamping bulge. The novel foam pump has the advantages of simple assembling and high assembling stability. Thus, when the novel foam pump falls off, the position stability of the foam pump body and the battery can also be ensured. Meanwhile, there is a buffer space reserved between the foam pump body and the battery, so that the impact of the work of the foam pump body on the service life, the safety and other properties of the battery can also be effectively reduced. 
     In order to describe the structural features and effects of the present disclosure more clearly, the present disclosure is described in detail below in combination with the accompanying drawings and specific embodiments. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a schematic three-dimensional diagram of Embodiment I of the present disclosure; 
         FIG.  2    is a schematic sectional diagram of Embodiment I of the present disclosure; 
         FIG.  3    is a partially enlarged diagram of  FIG.  2   ; 
         FIG.  4    is an exploded diagram of Embodiment I of the present disclosure; 
         FIG.  5    is a schematic enlarged diagram of the part A in  FIG.  4   ; 
         FIG.  6    is a schematic enlarged diagram of the part B in  FIG.  4   ; 
         FIG.  7    is a schematic exploded diagram of a nozzle in Embodiment I of the present disclosure; 
         FIG.  8    is a schematic three-dimensional diagram of a support module in Embodiment I of the present disclosure; 
         FIG.  9    is a schematic three-dimensional diagram of Embodiment II of the present disclosure; and 
         FIG.  10    is a side view of Embodiment II of the present disclosure. 
     
    
    
     REFERENCE NUMERALS IN THE DRAWINGS 
       10 : shell main body;  20 : nozzle;  201 : upper cover;  2011 : clamping hole;  202 ; lower cover;  2021 : elastic fastener;  21 : circuit board;  211 : touch switch;  212 : trigger sensor;  22 : foam outlet;  23 : mounting cavity;  30 : battery;  40 : foam pump;  50 : suction pipe;  60 : fixed support;  61 : upper mounting position;  611 : gap;  62 : lower mounting position;  621 : first placement place;  63 : positioning clamping slot;  64 : buffer space;  70 : connecting cap;  71 : connecting slot; and  72 : pressing spacer. 
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only preferred embodiments of the present disclosure. 
     It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or an intermediate element may also exist. When one element is considered to be “connected” to another element, it can be directly connected to another element or there may be a central element at the same time. The terms “perpendicular”, “horizontal”, “left”, “right” and similar expressions used herein are for illustrative purposes only, and are not meant to be the only implementation modes. 
     Unless otherwise defined, all technical and scientific terms used herein are the same as meanings of general understandings of those skilled in the art of the present disclosure. The terms used in the description of the present disclosure herein are merely to describe the specific implementation modes, not intended to limit the present disclosure. The term “and/or” used herein includes any and all combinations of one or more related listed items. 
     Referring to  FIG.  1    to  FIG.  10   , a novel foam pump in an embodiment of the present disclosure includes a shell main body  10  and a nozzle  20  arranged on an upper side of the shell main body  10 . A battery  30  and a foam pump body  40  are arranged in the shell main body  10 . The nozzle  20  is provided with a circuit board  21  and a foam outlet  22 . The circuit board  21  is electrically connected to the battery  30  and the foam pump body  40 . The foam pump body  40  is provided with an input end and an output end. The input end of the foam pump body  40  is connected with a suction pump  50 . The suction pipe  50  extends out of the shell main body  10 . The output end of the foam pump body  40  is connected with the foam outlet  22 . The circuit board  21  is electrically connected with a trigger switch. 
     The shell main body is cylindrical, which extends vertically. A fixed support  60  is arranged inside the shell main body  10 . The fixed support  60  has an upper mounting position  61  and a lower mounting position  62 . The foam pump body  40  is mounted at the upper mounting position  61 . The battery  30  is arranged at the lower mounting position  62 . A circumferential surface of the fixed support  60  is provided with a positioning clamping slot  63 . The shell main body  10  is internally provided with a positioning clamp bulge matched with the positioning clamping slot  63 . 
     During assembling, the battery  30  and the foam pump  40  are first fixedly mounted on the support  60  to form a support module. The entire support module is then arranged in the shell main body  10  (specifically, an accommodating cavity is formed in the shell main body, and the accommodating cavity has an upper-end opening; and the support module is arranged in the shell main body from the upper-end opening of the shell main body). 
     Specifically, a first placement place  621  is arranged on a circumferential side of the lower mounting position  62 , and a second placement place is arranged on an upper side of the upper mounting position  61 . During assembling, the battery  30  is arranged in the lower mounting position  62  from the first placement place  621 . Furthermore, the circumferential side wall of the lower mounting position  62  achieves a clamping and fixing effect on the battery  30 . The foam pump body  40  is arranged in the upper mounting position  61  from the second placement place. In addition, a gap  611  is formed in a circumferential side wall of the upper mounting position  61 . Thus, when the foam pump body  40  is arranged at the upper mounting position  61 , the circumferential side wall of the second mounting position achieves a clamping and fixing effect on the foam pump body  40  (specifically, the gap is formed in the circumferential side wall, so that the circumferential side wall of the mounting position acts as a clamping wall, which has a clamping and fixing function). In addition, a buffer space  64  is reserved between the upper mounting position  61  and the lower mounting position  62 , so that when the foam pump body  40  works (vibrates), the impact on the battery  30  can be reduced, which can avoid damages to the battery  30 . 
     Further, the trigger switch includes a touch switch  211  and a trigger sensor  212  which are arranged on the circuit board  21 . The touch switch  211  is arranged on an upper side surface of the nozzle  20 . The trigger sensor  212  is arranged on a lower side surface of the nozzle  20 . A sensing region of the trigger sensor  212  is correspondingly arranged below the foam outlet  22 . Thus, the foam pump body  40  can work and discharge foam when a user touches it with a hand or by means of contactless induction, and the user can wash hands with the foam. Usually, the trigger sensor  212  is an infrared sensor. 
     Further, a connecting cap  70  connected with a bottle body is detachably arranged below the nozzle  20 . The connecting cap  70  is generally connected with a pourer of the bottle body. Specifically, a connecting slot  71  connected with the pourer is formed between the connecting cap  70  and the shell main body  10 . A connecting thread, such as an internal thread, is arranged in the connecting slot  71 , and the pourer is usually provided with an external thread matched with the internal thread. Preferably, a pressing spacer  72  (a seal spacer) is arranged in the connecting cap  70 , so that when the foam pump body  40  is connected with the bottle body, the airtightness can be ensured. 
     In actual applications, the connecting cap  70  can be of different specifications, so as to adapt to various bottle bodies. During working, the foam pump body  40  works, and the suction pipe  50  inputs hand sanitizer from the bottle body into the foam pump, and the foam pump stirs the hand sanitizer to form foam and discharges the foam from the foam outlet  22  of the nozzle  20 . 
     Preferably, the nozzle  20  includes an upper cover  201  and a lower cover  202  detachably connected to the upper cover  201 . Specifically, the lower cover  202  upwards extends to form an elastic fastener  2021 . The upper cover  201  is provided with a fastening hole  2011  matched with the elastic fastener  2021 . The upper cover  201  and the lower cover  202  are assembled to form a mounting cavity  23  for mounting the circuit board  21 . Thus, the assembling difficulty is lowered. Preferably, the foam outlet  22  downwards tilts, which facilitates use by the user. 
     The key of the design of the present disclosure is as follows. The battery and the foam pump body are mainly mounted on the fixed support, and the fixed support is then mounted in the shell main body. Mounting and fixing are completed by means of the cooperation between the positioning clamping slot and the positioning clamping bulge. The novel foam pump has the advantages of simple assembling and high assembling stability. Thus, when the novel foam pump falls off, the position stability of the foam pump body and the battery can also be ensured. Meanwhile, there is a buffer space reserved between the foam pump body and the battery, so that the impact of the work of the foam pump body on the service life, the safety and other properties of the battery can also be effectively reduced. 
     The above descriptions are only preferred embodiments of the present disclosure, and do not limit the technical scope of the present disclosure. Therefore, any minor changes, equivalent changes and modifications made to the above embodiments according to the technical essence of the present disclosure still fall within the scope of the technical solutions of the present disclosure.