Vacuum machine with charging base

Abstract

The utility model belongs to the technical field of vacuum machines, and particularly relates to a vacuum machine with a charging base, which comprises an air exhaust body and the charging base. The air exhaust body is used for exhausting air; the charging base is independent of the air exhaust body and is separated from the air exhaust body, and the air exhaust body can be charged only when the air exhaust body is inserted into the charging base through an insertion structure. The air exhaust body and the charging base are arranged in a split mode, so that the size of the vacuum machine in the vacuum working process can be reduced, operation convenience is improved, an operator cannot conduct vacuum pumping and charging at the same time in design, potential safety hazards are reduced, too high heat can be prevented from being generated at the same time of charging and air exhaust, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum machines, and particularly relates to a vacuum machine with a charging base. Background Art

[0002] Vacuum packaging refers to a packaging or storage product that evacuates the air inside the package to form a certain degree of vacuum, thereby reducing the volume of the package. Most current vacuum pumps adopt an electric air pump suitable for vacuum packaging with the patent number CN219529257U. When air extraction is required, the air extraction port of the electric air pump is docked with a connection joint, and a one-way valve is provided inside the connection joint. After docking, the electric air pump starts to work, and thus a certain degree of vacuum is formed by extracting air at the air extraction port. Under the action of this vacuum degree, the one-way valve moves towards the air extraction port side to open, and then the air inside the vacuum packaging can be extracted by the electric air pump, reducing the volume of the vacuum packaging. Such vacuum packaging is commonly a vacuum storage bag, which can be used to store items such as quilts and clothes that need to be stored, and is very helpful for saving storage space and moisture-proofing.

[0003] However, current handheld vacuum machines are directly charged on the main body (without a charging base), resulting in the defect that users will use the vacuum machine to work and extract air while charging, which will cause the internal battery and the air suction pump to overheat, affecting the service life of the product and also posing a safety hazard. Moreover, the charging structure together with the main body also increases the volume of the vacuum machine, to a certain extent affecting the convenience of use. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a vacuum machine with a charging base for the above-mentioned existing technical problems, achieving the effects of reducing safety hazards, improving convenience and service life.

[0005] In view of this, the utility model provides a vacuum machine with a charging base, including

[0006] An air extraction body for extracting air;

[0007] A charging base, which is independently arranged outside the air extraction body and is separated from the air extraction body. The air extraction body needs to be plugged into the charging base through a plugging structure to be charged.

[0008] In this technical solution, the separate setting of the air extraction body and the charging base can reduce the volume of the vacuum machine during vacuum operation, improve the convenience of operation, prevent the operator from extracting vacuum and charging at the same time from a design perspective, reduce safety hazards, and prevent excessive heat from being generated during charging and air extraction simultaneously, improving the service life.

[0009] Further, the air extraction body includes an air extraction housing and a connection nozzle extending out of the air extraction housing. The connection nozzle is used to connect with the object to be evacuated. The charging base includes a charging housing. An inwardly recessed receiving groove is provided at the top of the charging housing. The shape of the receiving groove matches the shape of the connection nozzle. The connection nozzle can be inserted into the receiving groove. The plugging structure further includes two first metal pieces provided on the outer wall of the connection nozzle and two second metal pieces provided on the inner wall of the receiving groove. The two first metal pieces can be in electrical contact with the two second metal pieces respectively.

[0010] Further, the plugging structure further includes a guiding structure for enabling the two first metal pieces to be in precise corresponding contact with the two second metal pieces respectively.

[0011] Further, the guiding structure includes:

[0012] Grooves, there are three grooves opened on the wall of the receiving groove. The distance between two of the grooves is less than the distances from the two grooves to the other groove respectively.

[0013] Protrusions, the protrusions are provided on the outer wall of the connection nozzle. There are three protrusions in total and their positions correspond to the grooves. When the three protrusions are respectively inserted into the three grooves, the two first metal pieces can be in corresponding contact with the two second metal pieces respectively.

[0014] In this technical solution, the guiding structure can prevent the positive and negative poles of the installed metal pieces from being connected reversely, resulting in inability to charge.

[0015] Further, a lithium battery, an air extraction circuit board, an air suction pipe and an air suction pump are arranged in the air extraction housing. An air suction port is opened on the side of the charging housing facing the connection nozzle. The two poles of the lithium battery are connected to the air extraction circuit board. The two first metal pieces are connected to the air extraction circuit board. A button is provided at the top of the air extraction housing. A start switch is arranged on the air extraction circuit board. The start switch is located directly below the button. The air suction pump is electrically connected to the air extraction circuit board. One end of the air suction pipe is connected to the air suction pump and the other end is connected to the air suction port. When the start switch is pressed down, the working circuit of the air suction pump is connected.

[0016] In this technical solution, when the button is pressed, the start switch is contacted to make the air suction pump start working to suck air. The air suction pump sucks the air in the object to be evacuated from the air suction port into the air suction pipe and then discharges it.

[0017] Further, a negative pressure switch is also connected to the air extraction circuit board. The negative pressure switch is communicated with the air suction pipe and is used to sense the vacuum degree. The negative pressure switch is used to stop the air suction pump from working.

[0018] In this technical solution, when the negative pressure switch senses that the vacuum degree of the air suction pipe reaches the preset value, it means that the vacuum degree in the object to be evacuated has met the requirements, and then the connection circuit of the air suction pump on the electrode plate will be cut off to make the air suction pump stop working.

[0019] Further, the suction pipe is made of silica gel.

[0020] Further, an annular groove is provided at the end of the connecting nozzle, and a sealing silica gel ring is provided in the annular groove. The end of the sealing silica gel ring protrudes above the connecting nozzle.

[0021] In this technical solution, when evacuating an object to be evacuated, the end of the sealing silica gel ring presses against the outer end of the air outlet of the object, which can seal the gap between the product and the object to be evacuated, improving the evacuation efficiency.

[0022] Further, a charging port is provided on the charging base, a charging circuit board is provided inside the charging base, a TYPE-C interface is provided on the charging circuit board, the TYPE-C interface corresponds to the position of the charging port, and the charging circuit board is electrically connected to two second metal pieces.

[0023] The beneficial effects of the present utility model are:

[0024] 1. The separate setting of the air extraction body and the charging base can reduce the volume of the vacuum machine during vacuum operation, improve the convenience of operation, prevent the operator from charging while evacuating from the design, reduce potential safety hazards, and prevent excessive heat generation during charging and air extraction at the same time, improving the service life.

[0025] 2. The guiding structure can prevent the positive and negative poles of the installed metal pieces from being connected reversely, resulting in inability to charge. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a perspective view of the present utility model;

[0027] Figure 2 is an exploded view of the present utility model;

[0028] Figure 3 is a perspective view of the air extraction body;

[0029] Figure 4 is an exploded view of the air extraction body;

[0030] Figure 5 is a perspective view of the air extraction body after removing the air extraction cover;

[0031] Figure 6 is a cross-sectional view of the present utility model.

[0032] Figure 7 is a circuit diagram of the charging circuit board.

[0033] Figure 8 is a circuit diagram of the air extraction circuit board.

[0034] The reference signs in the drawings are shown as:

[0035] 1. Air extraction body; 2. Charging base; 3. Air extraction cover; 4. Connecting nozzle; 5. Charging cover; 6. Accommodating groove; 7. First metal sheet; 8. Second metal sheet; 9. Groove; 10. Bump; 11. Lithium battery; 12. Air extraction circuit board; 13. Suction pipe; 14. Suction pump; 15. Suction port; 16. Button; 17. Start switch; 18. Negative pressure switch; 19. Annular groove; 20. Sealing silicone ring; 21. Charging port; 22. Charging circuit board. Detailed implementation manner

[0036] The following will clearly describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0037] In the description of the present application, it should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments of the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0038] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. generally belong to the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0039] It should be noted that in the description of the present application, the orientation or positional relationship indicated by the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary description, these directional terms do not indicate and imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the directional terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0040] It should be noted that in the present application, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0041] Embodiment 1

[0042] As Figure 1-2 shown, a vacuum machine with a charging base 2 includes an air extraction body 1 and a charging base 2. The air extraction body 1 is used for air extraction; the charging base 2 is independently and separately arranged from the air extraction body 1, and the air extraction body 1 needs to be plugged into the charging base 2 through a plugging structure to be charged.

[0043] The separate arrangement of the air extraction body 1 and the charging base 2 can reduce the volume of the vacuum machine during vacuum operation, improve the convenience of operation, prevent the operator from charging while extracting vacuum from a design perspective, reduce potential safety hazards, and prevent excessive heat generation during charging and air extraction simultaneously, thereby increasing the service life.

[0044] Embodiment 2

[0045] As Figure 2-3As shown, the air extraction body 1 includes an air extraction housing 3 and a connection nozzle 4 extending out of the air extraction housing 3. The connection nozzle 4 is used to connect with the object to be evacuated. The charging base 2 includes a charging housing 5. An inwardly recessed receiving groove 6 is provided at the top of the charging housing 5. The shape of the receiving groove 6 matches the shape of the connection nozzle 4. The connection nozzle 4 can be inserted into the receiving groove 6. The plug-in structure further includes two first metal pieces 7 provided on the outer wall of the connection nozzle 4 and two second metal pieces 8 provided on the inner wall of the receiving groove 6. The two first metal pieces 7 can be in electrical contact with the two second metal pieces 8 respectively.

[0046] The plug-in structure further includes a guiding structure for enabling the two first metal pieces 7 to be in precise corresponding contact with the two second metal pieces 8 respectively.

[0047] The guiding structure includes a groove 9 and a protrusion 10. The groove 9 is opened on the wall of the receiving groove 6 and there are three in total. The distance between two of the grooves 9 is less than the distances from the two grooves 9 to the other groove 9 respectively. The protrusion 10 is provided on the outer wall of the connection nozzle 4. There are three protrusions 10 in total and their positions correspond to the grooves 9. When the three protrusions 10 are inserted into the three grooves 9 respectively, the two first metal pieces 7 can be in corresponding contact with the two second metal pieces 8 respectively. The guiding structure can prevent the positive and negative poles of the installed metal pieces from being connected reversely, resulting in inability to charge.

[0048] Embodiment III

[0049] As Figure 4-5 shown, a lithium battery 11, an air extraction circuit board 12, an air suction pipe 13 and an air suction pump 14 are arranged in the air extraction housing 3. An air suction port 15 is opened on one side of the charging housing 5 facing the connection nozzle 4. The two poles of the lithium battery 11 are connected to the air extraction circuit board 12. The two first metal pieces 7 are connected to the air extraction circuit board 12. A button 16 is provided at the top of the air extraction housing 3. A start switch 17 is provided on the air extraction circuit board 12. The start switch 17 is located directly below the button 16. The air suction pump 14 is electrically connected to the air extraction circuit board 12. One end of the air suction pipe 13 is connected to the air suction pump 14 and the other end is connected to the air suction port 15. Pressing down the start switch 17 connects the working circuit of the air suction pump 14. The air suction pipe 13 is made of silica gel material. For the specific air extraction circuit schematic diagram, see Figure 8 .

[0050] When the button 16 is pressed, the start switch 17 is contacted to make the air suction pump 14 start working to suck air. The air suction pump 14 sucks the air in the object to be evacuated from the air suction port 15 into the air suction pipe 13 and then discharges it.

[0051] A negative pressure switch 18 is also connected to the air extraction circuit board 12. The negative pressure switch 18 is communicated with the air suction pipe 13 and is used to sense the vacuum degree. The negative pressure switch 18 is used to stop the operation of the suction pump 14. When the negative pressure switch 18 senses that the vacuum degree of the air suction pipe 13 reaches the preset value, it means that the vacuum degree in the object to be evacuated meets the requirements, and then the connection circuit of the suction pump 14 on the electrode plate will be cut off to stop the operation of the suction pump 14.

[0052] Embodiment 4

[0053] As Figure 6 shown, an annular groove 19 is provided at the end of the connecting nozzle 4, and a sealing silica gel ring 20 is arranged in the annular groove 19. The end of the sealing silica gel ring 20 protrudes above the connecting nozzle 4.

[0054] When it is necessary to evacuate the object to be evacuated, the end of the sealing silica gel ring 20 presses against the outer end of the air outlet of the object, which can seal the gap between the product and the object to be evacuated and improve the evacuation efficiency.

[0055] A charging port 21 is provided on the charging base 2, and a charging circuit board 22 is arranged inside the charging base 2. For the specific charging principle diagram, see Figure 7 , a TYPE-C interface is provided on the charging circuit board 22. The TYPE-C interface corresponds to the position of the charging port 21, and the charging circuit board 22 is electrically connected to the two second metal pieces 8.

[0056] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A vacuum machine with a charging base, characterized in that ,include An air extraction body (1), the air extraction body (1) being used for extracting air; A charging base (2), wherein the charging base (2) is independent of the exhaust body (1) and is arranged separately from the exhaust body (1); the exhaust body (1) needs to be plugged into the charging base (2) via a plug-in structure in order to be charged; The vacuum body (1) comprises a vacuum housing (3) and a connecting nozzle (4) extending from the vacuum housing (3), the connecting nozzle (4) being used to connect to an object to be vacuumed, the charging base (2) comprises a charging housing (5), the top of the charging housing (5) is provided with an inwardly recessed receiving groove (6), the shape of the receiving groove (6) matches the shape of the connecting nozzle (4), the connecting nozzle (4) can be inserted into the receiving groove (6), and the plug-in structure further comprises two first hardware sheets (7) arranged on the outer wall of the connecting nozzle (4) and two second hardware sheets (8) arranged on the inner wall of the receiving groove (6), the two first hardware sheets (7) can respectively be in electrical contact with the two second hardware sheets (8).

2. A vacuum machine with a charging base according to claim 1, characterized in that: The plug-in structure further comprises a guide structure, which is used to enable the two first hardware pieces (7) to respectively contact with the two second hardware pieces (8) in precise correspondence.

3. A vacuum machine with a charging base according to claim 2, characterized in that: The guiding structure comprises: Grooves (9), wherein the grooves (9) are formed on the wall of the receiving groove (6) and there are three of them in total, wherein the distance between two grooves (9) is smaller than the distance between the two grooves (9) and another groove (9); A convex block (10) is arranged on the outer wall of the connecting nozzle (4), and a total of three convex blocks (10) are arranged and their positions correspond to the grooves (9). When the three convex blocks (10) are respectively inserted into the three grooves (9), the two first hardware sheets (7) can respectively contact with the two second hardware sheets (8).

4. A vacuum machine with a charging base according to claim 3, characterized in that: The vacuum housing (3) is provided with a lithium battery (11), a vacuum circuit board (12), an air suction pipe (13) and an air suction pump (14). An air suction port (15) is provided on a side of the charging housing (5) facing the connection nozzle (4). The two poles of the lithium battery (11) are connected to the vacuum circuit board (12). The two first metal sheets (7) are connected to the vacuum circuit board (12). A button (16) is provided on the top of the vacuum housing (3). A start switch (17) is provided on the vacuum circuit board (12). The start switch (17) is located directly below the button (16). The air suction pump (14) is electrically connected to the vacuum circuit board (12). One end of the air suction pipe (13) is connected to the air suction pump (14), and the other end is connected to the air suction port (15). When the start switch (17) is pressed, the working circuit of the air suction pump (14) is connected.

5. A vacuum machine with a charging base according to claim 4, characterized in that: The vacuum circuit board (12) is also connected to a negative pressure switch (18), which is in communication with the suction pipe (13) and is used to sense the vacuum degree. The negative pressure switch (18) is used to stop the suction pump (14) from operating.

6. A vacuum machine with a charging base according to claim 5, characterized in that: The air intake pipe (13) is made of silica gel.

7. A vacuum machine with a charging base according to claim 6, characterized in that: An annular groove (19) is provided at the end of the connection nozzle (4), a sealing silicone ring (20) is provided in the annular groove (19), and the end of the sealing silicone ring (20) is higher than the connection nozzle (4).

8. A vacuum machine with a charging base according to claim 7, characterized in that: The charging base (2) is provided with a charging port (21), a charging circuit board (22) is provided inside the charging base (2), a TYPE-C interface is provided on the charging circuit board (22), the TYPE-C interface corresponds to the position of the charging port (21), and the charging circuit board (22) is electrically connected to the two second hardware sheets (8).

Images