Balloon expansion machine

Abstract

The invention discloses a balloon expander which is characterized in that an expansion operation area is arranged on a base, and a negative pressure generation hole is formed in the expansion operation area; the cover shell is positioned in the expansion operation area, an expansion cavity used for containing a balloon is formed between at least part of the area of the expansion operation area and an inner cavity of the cover shell, the negative pressure generating hole is located in the range of the expansion cavity, and a first opening is formed in the position, opposite to the expansion operation area, of the cover shell. A convex ring used for positioning the expanded inflation inlet of the balloon is arranged on the first opening along the edge of the first opening, and the convex ring extends in the direction opposite to the expansion operation area; a negative pressure generating opening of the negative pressure generating device is connected with the negative pressure generating hole through a pipeline; the balloon expansion mode realized by the balloon expansion machine is more convenient to use, so that the quantity of ornaments or liquid which can be stuffed into the balloon is increased, and the decoration effect after the balloon is expanded is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of balloon inflation equipment, and particularly relates to a balloon inflator. Background Art

[0002] Currently, for balloon inflation, generally, people blow air into the air inlet of the balloon by mouth to make the balloon expand, or use a special air pump to blow air into the air inlet of the balloon to make the balloon expand. Then, when it is necessary to insert certain ornaments or liquids into the balloon, it can only be inserted before the balloon is inflated. Since the inflation port of the balloon is small, it is difficult to insert the ornaments or liquids, and the amount that can be inserted is also small. Therefore, it is inconvenient to use the balloon when inserting ornaments or liquids, and it also limits the effect after the balloon expands after inserting ornaments or liquids. So, improvement is urgently needed. Summary of the Invention

[0003] The present invention designs a balloon inflator to solve the above technical problems.

[0004] A balloon inflator provided by the present invention includes:

[0005] A base, on which an inflation operation area is provided, and negative pressure generating holes are provided on the inflation operation area;

[0006] A housing, which is positioned in the inflation operation area. At least part of the area of the inflation operation area and the inner cavity of the housing form an inflation cavity for accommodating the balloon. The negative pressure generating holes are within the range of the inflation cavity. A first opening is provided at a position on the housing opposite to the inflation operation area. A convex ring for positioning after the inflation port of the balloon is expanded is provided along the edge of the first opening, and the convex ring extends in a direction opposite to the inflation operation area;

[0007] A negative pressure generating device, the negative pressure generating port of which is connected to the negative pressure generating holes through a pipeline;

[0008] Wherein, during the continuous operation of the negative pressure generating device, the air pressure in the inflation cavity is less than the external air pressure, which prompts the air pressure to continuously enter the balloon cavity through the expanded inflation port on the balloon, so that the balloon is in an expanded state.

[0009] According to the above-mentioned balloon inflator, it further includes a bracket disposed in the inflation cavity. The bracket includes a recessed portion that is suspended in the inflation cavity. The recessed portion is hollowed out and is disposed opposite to the first opening. The area above the recessed portion in the inflation cavity serves as an inflation position for the balloon.

[0010] According to the balloon inflator described above, the inflation working area includes a boss. The housing is sleeved on the boss by its second opening. The circumferential side surface of the boss contacts the inner wall of the housing. An inflation chamber is formed between the top surface of the boss and the inner cavity of the housing. The negative pressure generating holes are provided on the top surface of the boss.

[0011] According to the balloon inflator described above, the inflation working area further includes a support surface continuously provided on the circumferential side of the boss. The support surface supports the end surface of the housing having the second opening. At a position on the support surface far from the boss, side blocking portions are provided continuously or at intervals. At least one first clamping convex is provided on the side of the side blocking portion facing the boss. A clamping gap is formed between the first clamping convex and the support surface. At least one second clamping convex is provided on the outer wall of the portion of the housing between the side blocking portion and the boss. The second clamping convex is fitted in the clamping gap.

[0012] According to the balloon inflator described above, the support surface (112) includes an annular bottom surface and a soft annular ring. The annular bottom surface and the soft annular ring are correspondingly overlapped so that the side surface of the soft annular ring facing the housing (2) supports the end surface of the housing (2) having the second opening (25) and forms a clamping gap (119) with the first clamping convex (118).

[0013] According to the balloon inflator described above, a sealing plug is further included. When the sealing plug is located within the convex ring, at least a part of the sealing plug is wrapped by the inflation port of the inflated balloon.

[0014] According to the balloon inflator described above, an air outlet nozzle is further included. The air outlet nozzle is installed on the base, and the air outlet of the negative pressure generating device is connected to the air outlet nozzle.

[0015] According to the balloon inflator described above, the bracket further includes a plurality of support frames provided on the circumferential side of the recessed portion and arranged in an annular array. Each of the support frames is placed on the top surface of the boss or on the step of the inner wall of the housing.

[0016] According to the balloon inflator described above, convex portions are provided continuously or at intervals at the edge of the top surface of the boss or at a position near the edge of the top surface. The bottom surface of each support frame contacts the top surface of the convex portion so that the bracket is mounted on the convex portion.

[0017] According to the balloon inflator described above, a blocking block extending toward the boss is provided on the bottom surface of at least one of the support frames. A concave portion is formed between the side wall of the blocking block and the bottom surface of the support frame. The convex portion is fitted in the concave portion so that the blocking block and the convex portion are mutually limited.

[0018] According to the balloon inflator described above, the top surface of the boss has a concave portion that is concave downward toward the bottom of the base.

[0019] According to the balloon inflator described above, an outwardly expanding annular portion is formed at the upper end opening of the convex ring, and the annular portion is provided in a protruding manner on the outer side wall of the convex ring.

[0020] According to the balloon inflator described above, the negative pressure generating holes are provided at the position of the concave portion, and a plurality of air flow guiding grooves arranged in an annular array are formed on the upper surface of the concave portion around the negative pressure generating holes.

[0021] According to the balloon inflator described above, an installation cavity is provided in the base, and the negative pressure generating device is installed in the installation cavity.

[0022] A balloon inflator designed by the present invention can first place a balloon in the inflation cavity, then expand and fold the inflation port of the balloon and use the elasticity of the inflation port itself to buckle it upside down on the convex ring. At this time, the negative pressure generating device works continuously, so that the air pressure in the inflation cavity is less than the external air pressure, prompting the air pressure to continuously enter the balloon cavity through the expanded inflation port on the balloon, so that the balloon is in an inflated state. At this time, ornaments or liquids can be stuffed into the balloon through the expanded inflation port. After the operation is completed, the inflation port is separated from the convex ring and knotted and sealed, and finally the cover is separated from the boss to take out the inflated balloon. The balloon inflation method realized by this balloon inflator is more convenient to use, increases the amount of ornaments or liquids that can be stuffed into the balloon, and thus improves the decorative effect after the balloon is inflated. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic view of the overall structure;

[0024] Figure 2 is an exploded view of the overall structure;

[0025] Figure 3 is an exploded view of the cover and the bracket separated from each other;

[0026] Figure 4 is a schematic view of the structure of the cover;

[0027] Figure 5 is a schematic view of the structure of the bracket and the base combined;

[0028] Figure 6 is a schematic view of the structure of the base (1);

[0029] Figure 7 is a schematic view of the structure of the base (2);

[0030] Figure 8 is a cross-sectional view of the overall structure;

[0031] Figure 9 It is a schematic structural diagram of a balloon installed on a balloon inflator;

[0032] Figure 10 It is a schematic structural diagram of a sealing plug inserted at the inflation port of the balloon on the balloon expander;

[0033] Figure 11 It is an enlarged view of part A;

[0034] Figure 12 It is an enlarged view of part B.

[0035] Reference numerals: 1, base; 2, housing; 3, negative pressure generating device; 4, bracket;

[0036] 11, inflation operation area; 12, upper half shell; 13, lower half shell; 21, first opening; 22, convex ring; 23, annular part; 24, second clamping projection; 25, second opening; 41, recessed part; 42, support frame; 43, stop block; 44, concave part;

[0037] 111, convex platform; 112, support surface; 113, side stop part; 114, lower concave part; 115, convex part; 116, negative pressure generating hole; 117, air flow guiding groove; 118, first clamping projection; 119, clamping gap; 120, air outlet nozzle; 121, soft annular ring; 122, annular bottom surface; 123, pipe body; 411, middle hole; 412, side hole; 5, inflation cavity; 6, sealing plug; 61, annular convex. Specific embodiments

[0038] In order to enable those skilled in the art to better understand the present invention and thus more clearly define the scope of protection required by the present invention, the present invention will be described in detail below with reference to certain specific embodiments of the present invention. It should be noted that the following are only some specific embodiments of the concept of the present invention and only a part of the embodiments of the present invention. The specific and direct descriptions of the relevant structures are only for the convenience of understanding the present invention, and each specific feature does not of course and directly limit the scope of implementation of the present invention. Conventional selections and substitutions made by those skilled in the art under the guidance of the concept of the present invention should be regarded as being within the scope of protection required by the present invention.

[0039] As Figures 1 - 9 shown, a balloon inflator described in this embodiment includes a base 1, a housing 2 and a negative pressure generating device 3,

[0040] An expansion working area 11 is provided on the base 1. A negative pressure generating hole 116 is provided on the expansion working area 11. The negative pressure generating hole 116 can be circular, square or of other shapes, and a tube body extends downward at the negative pressure generating hole 116. The cover 2 is positioned at the expansion working area 11. An expansion cavity 5 for accommodating the balloon is formed between at least part of the expansion working area 11 and the inner cavity of the cover 2. The negative pressure generating hole 116 is within the range of the expansion cavity. A first opening 21 is provided at a position on the cover 2 opposite to the expansion working area 11. A convex ring 22 for positioning the balloon after the inflation port is expanded is provided along the edge of the first opening 21. The convex ring 22 extends along the direction opposite to the expansion working area 11. An installation cavity is provided inside the base 1. The negative pressure generating device 3 is installed in the installation cavity. The negative pressure generating port of the negative pressure generating device 3 is docked with the tube body of the negative pressure generating hole 116 through a pipeline. The negative pressure generating device 3 can be an air extraction pump and is powered by a battery to start. The cover 2 and the base 1 are generally made of plastic materials. The base 1 is composed of an upper half shell 12 and a lower half shell 13 that are spliced and fixed to each other.

[0041] Wherein, an outwardly expanding annular part 23 is formed at the upper end opening of the convex ring 22. The annular part 23 protrudes on the outer side wall of the convex ring 22. Therefore, after the balloon is placed in the expansion cavity, the inflation port of the balloon is expanded and folded, and then buckled on the convex ring 22 by the elasticity of the inflation port itself. And the annular part positions the folded inflation port. Then the negative pressure generating device 3 works continuously, so that the air pressure in the expansion cavity is less than the external air pressure, prompting the air pressure to continuously enter the balloon cavity through the expanded inflation port on the balloon, so that the balloon is in an expanded state.

[0042] In this embodiment, a bracket 4 is further provided in the expansion cavity. The bracket 4 includes a recessed part 41 that is suspended in the expansion cavity. A middle hole 411 and a plurality of side holes 412 located on the periphery of the middle hole 411 are provided on the recessed part 41 to make the recessed part 41 in a hollow state. And the recessed part 41 is arranged opposite to the first opening 21. The area above the recessed part 41 in the expansion cavity is used as an expansion position for the balloon to expand. Among them, the setting of the recessed part 41 mainly supports the expanded balloon to prevent the balloon from sagging and causing the inflation port to separate from the convex ring 22, especially after injecting liquid into the balloon body. The hollow setting of the recessed part 41 makes it easier to generate negative pressure in the expansion cavity and improves the use effect.

[0043] Further, the bracket 4 further includes a plurality of support frames 42 arranged in a circumferential array on the periphery of the recessed portion 41. Each of the support frames 42 is placed on the top surface of the boss 111 or on the step of the inner wall of the housing 2. For the two installation methods of the bracket 4 in the expansion cavity, the generally preferred technical solution is: at the edge of the top surface of the boss 111 or at a position near the edge of the top surface, there are convex portions 115 arranged continuously or at intervals. The bottom surface of each support frame 42 contacts the top surface of the convex portion 115 so that the bracket 4 is mounted on the convex portion 115. In order to make the installation of the bracket 4 more stable, a stop block 43 extending towards the boss 111 is provided on the bottom surface of at least one of the support frames 42. A concave portion 44 is formed between the side wall of the stop block 43 and the bottom surface of the support frame 42. The convex portion 115 is fitted into the concave portion 44, so that the stop block 43 and the convex portion 115 are mutually limited. The convex portion 115 is generally annularly arranged.

[0044] In this embodiment, the expansion operation area 11 includes a boss 111. The boss 111 can be a cylindrical boss 111 or other polygonal bosses 111. The housing 2 is sleeved on the boss 111 by its second opening 25. The circumferential side surface of the boss 111 contacts the inner wall of the housing 2. An expansion cavity is formed between the top surface of the boss 111 and the inner cavity of the housing 2. The negative pressure generating hole 116 is provided on the top surface of the boss 111. This structural setting enables the housing 2 to be detachably installed on the base 1. When it is necessary to take out the inflated balloon, the inflation port is separated from the convex ring 22 and knotted and sealed. An upward force is applied to the housing 2 to make it separate from the boss 111, and then the inflated balloon is taken away from the bracket 4.

[0045] Preferably, the expansion operation area 11 further includes a support surface 112 continuously arranged on the periphery of the boss 111. The support surface 112 supports the end face of the housing 2 with the second opening 25. At a position on the support surface 112 far from the boss 111, there are side stop portions 113 arranged continuously or at intervals. On the side of the side stop portion 113 facing the boss 111, there is at least one first clamping convex 118. A clamping gap 119 is formed between the first clamping convex 118 and the support surface 112. On the outer wall of the part of the housing 2 located between the side stop portion 113 and the boss 111, there is at least one second clamping convex 24. The second clamping convex 24 is fitted into the clamping gap 119. This structural setting enables the housing 2 to be snap-mounted on the base 1, thereby preventing the housing 2 from separating from the base 1 during the use of the balloon inflator. Among them, the side stop portion 113 preferably adopts an annular structure, and the first clamping convex 118 and the second clamping convex 24 preferably adopt three to enhance the stability of the snap-mounted installation. However, two can also be adopted, and the second clamping convex 24 is arranged in a spiral shape and inclined.

[0046] In this embodiment, the top surface of the boss 111 has a concave portion 114 that is concave downward toward the bottom of the base 1. The concave portion 114 is spherical so that the upper surface of the concave portion 114 is a concave spherical surface.

[0047] Preferably, the negative pressure generating hole 116 is provided at the position of the concave portion 114, and a plurality of air flow guiding grooves 117 are formed on the upper surface of the concave portion 114 and are arranged in an annular array around the negative pressure generating hole 116. This structural arrangement enables the air flow in the expansion cavity to be more easily drawn away by the negative pressure generating device 3.

[0048] Furthermore, the support surface 112 includes an annular bottom surface 122 and a soft annular ring 121. The annular bottom surface 122 and the soft annular ring 121 are correspondingly overlapped so that the side surface of the soft annular ring 121 facing the housing 2 supports the end surface of the housing 2 having the second opening 25, and a clamping gap 119 is formed between the soft annular ring 121 and the first clamping convex 118. When the lower end surface of the housing 2 contacts the upper side surface of the soft annular ring 121 and rotates, the second clamping convex 24 enters the clamping gap 119 in a rotating manner, so that the highest part of the second clamping convex 24 abuts against the lower side surface of the first clamping convex 118 and presses the soft annular ring, prompting the lower end surface of the housing 2 to be in close contact with the upper side surface of the soft annular ring 121. Thus, the housing 2 is hermetically installed on the base 1, so that the negative pressure generating device 3 can generate negative pressure in the expansion cavity after working.

[0049] In this embodiment, a sealing plug 6 is further included. When the sealing plug 6 is located within the convex ring 22, at least a part of the sealing plug 6 is wrapped by the inflation port of the inflated balloon. When wrapping, the tightening ring at the inflation port of the balloon is located on the upper side surface of the annular convex 61, thereby preventing the separation of the sealing plug from the balloon and sealing the inflated balloon to avoid the liquid inside the balloon from flowing out. At the same time, due to the elastic effect of the balloon, the part between the tightening ring at the inflation port of the balloon and the inflated sphere is tightly bound to the surface and protrusions of the sealing plug. At this time, since the inflation port of the inflated balloon is sealed, it is convenient to take out the balloon from the housing in the inflated state; when taking out, the housing and the base are disengaged and separated, and then the inflated balloon is taken out from the housing.

[0050] In this embodiment, an air outlet nozzle 120 is further included. The air outlet nozzle 120 is installed on the base 1, and the air outlet of the negative pressure generating device 3 is connected to the air outlet nozzle through a pipeline. Among them, the inflation port of the balloon can be sleeved on the pipe body 123 of the air outlet nozzle 120, and then the air outlet of the air outlet nozzle 120 is caused by the air outlet at the air outlet during the operation of the negative pressure generating device 3, prompting the balloon to expand.

[0051] In this embodiment, a switch and a power jack are further provided on the base, and a power control board is arranged inside the base. The power control board adopts a conventional DC power control board. Therefore, the negative pressure generating device 3, the switch and the power jack are respectively connected to the power control board. At this time, the power cord of the power adapter can be plugged into the power jack, so as to supply power to the negative pressure generating device 3 after the power adapter is powered on.

Claims

1. A balloon expander, characterized in that: include: A base (1), wherein an expansion operation area (11) is provided on the base (1), and a negative pressure generating hole (116) is provided on the expansion operation area (11); A cover shell (2), the cover shell (2) being positioned in the expansion operation area (11), an expansion cavity for accommodating a balloon being formed between at least a portion of the expansion operation area (11) and the inner cavity of the cover shell (2), the negative pressure generating hole (116) being located within the range of the expansion cavity, a first opening (21) being provided on the cover shell (2) at a position opposite to the expansion operation area (11), a convex ring (22) being provided along an edge of the first opening (21) for positioning the inflation port of the balloon after expansion, the convex ring (22) extending in a direction opposite to the expansion operation area (11); A negative pressure generating device (3), wherein the negative pressure generating port of the negative pressure generating device (3) is connected to the negative pressure generating hole (116) via a pipeline; When the negative pressure generating device (3) is in continuous operation, the air pressure in the expansion chamber is lower than the external air pressure, which causes the air pressure to continuously enter the balloon chamber through the expanded inflation port on the balloon, so that the balloon is in an expanded state.

2. The balloon expander according to claim 1, characterized in that: It also includes a bracket (4) arranged in the expansion chamber, the bracket (4) includes a recessed portion (41) suspended in the expansion chamber, the recessed portion (41) is hollowed out and arranged opposite to the first opening (21), and the area above the recessed portion (41) in the expansion chamber serves as an expansion position for balloon expansion.

3. The balloon expander according to claim 2, characterized in that: The expansion operation area (11) includes a boss (111), and the cover shell (2) is mounted on the boss (111) using its second opening (25). The peripheral side surface of the boss (111) contacts the inner wall of the cover shell (2), and the expansion cavity is formed between the top surface of the boss (111) and the inner cavity of the cover shell (2). The negative pressure generating hole (116) is arranged on the top surface of the boss (111).

4. The balloon expander according to claim 3, characterized in that: The expansion operation area (11) further comprises a support surface (112) continuously arranged on the circumference of the boss (111), the support surface (112) supporting the end surface of the cover shell (2) having the second opening (25), a portion of the support surface (112) away from the boss (111) is provided with a side stop portion (113) arranged continuously or at intervals, the side stop portion (113) is provided with at least one first locking protrusion (118) on the side facing the boss (111), a locking gap (119) is formed between the first locking protrusion (118) and the support surface (112), and at least one second locking protrusion (24) is provided on the outer wall of the portion of the cover shell (2) located between the side stop portion (113) and the boss (111), the second locking protrusion (24) being fitted in the locking gap (119).

5. The balloon expander according to claim 4, characterized in that: The supporting surface (112) comprises an annular bottom surface and a soft annular ring, wherein the annular bottom surface and the soft annular ring are arranged to overlap with each other, so that the side of the soft annular ring facing the housing (2) supports the end surface of the housing (2) having the second opening (25), and forms a locking gap (119) with the first locking protrusion (118).

6. The balloon expander according to claim 1, characterized in that: It also comprises a sealing plug (6). When the sealing plug (6) is located in the convex ring, the sealing plug (6) is at least partially wrapped by the inflation port of the inflated balloon.

7. The balloon expander according to claim 1, characterized in that: It also comprises an air outlet nozzle (120), wherein the air outlet nozzle (120) is mounted on the base (1), and the air outlet of the negative pressure generating device (3) is connected to the air outlet nozzle (120).

8. The balloon expander according to claim 3, characterized in that: The bracket (4) further comprises a plurality of support frames (42) arranged on the periphery of the recessed portion (41) and arranged in a circular array, each of the support frames (42) being placed on the top surface of the boss (111) or on a step with the inner wall of the housing (2); Preferably, a top edge of the boss (111) or a position close to the top edge is provided with continuous or spaced convex portions (115), and the bottom surface of each support frame (42) contacts the top surface of the convex portion (115) so that the bracket (4) is mounted on the convex portion (115); Preferably, the bottom surface of at least one of the support frames (42) is provided with a stopper (43) extending toward the boss (111), a recess (44) is formed between the side wall of the stopper (43) and the bottom surface of the support frame (42), and the convex portion (115) is engaged in the recess (44), so that the stopper (43) and the convex portion (115) are mutually limited.

9. The balloon expander according to any one of claims 3 to 10, characterized in that: The top surface of the boss (111) has a recessed portion (114) that is recessed toward the bottom of the base (1); Preferably, the negative pressure generating hole (116) is arranged at the position of the lower recess (114), and a plurality of airflow guiding grooves (117) arranged in a ring array around the negative pressure generating hole (116) are formed on the upper surface of the lower recess (114); The base (1) is provided with a mounting cavity, and the negative pressure generating device (3) is mounted in the mounting cavity.

10. The balloon expander according to claim 1, characterized in that: The upper end opening of the convex ring (22) is formed with an outwardly expanding annular portion (23), and the annular portion (23) is convexly arranged on the outer side wall of the convex ring (22).

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