CN111924789A - Inflating mechanism - Google Patents
Inflating mechanism Download PDFInfo
- Publication number
- CN111924789A CN111924789A CN202010922837.7A CN202010922837A CN111924789A CN 111924789 A CN111924789 A CN 111924789A CN 202010922837 A CN202010922837 A CN 202010922837A CN 111924789 A CN111924789 A CN 111924789A
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- Prior art keywords
- inflating
- piston
- pump body
- mounting groove
- limiting
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- 230000007246 mechanism Effects 0.000 title claims abstract description 36
- 238000007789 sealing Methods 0.000 claims abstract description 80
- 230000009471 action Effects 0.000 claims abstract description 6
- 238000005086 pumping Methods 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000035622 drinking Effects 0.000 abstract description 3
- 235000013405 beer Nutrition 0.000 description 19
- 238000000034 method Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000003139 buffering effect Effects 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
Landscapes
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention provides an inflating mechanism, and belongs to the technical field of drinking equipment. It has solved the problem that the operation of the inflating pump on current cask is not smooth and easy. This mechanism of inflating, including the pump body that the piston and the bottom of inflating have the venthole, the inner of the piston of inflating stretches into in the pump body and the inner pot head of the piston of inflating is equipped with and is annular sealing member, the piston outer end of inflating stretches out the pump body, the lateral part that the piston is the inner of inflating has to be recessed and is annular mounting groove, the sealing member set up in the mounting groove and the sealing member can make the outside of sealing member under self elastic action with pump body inner wall pastes mutually and leans on, the mounting groove is followed the axial width that the piston axial width of inflating is greater than the sealing member, the mounting groove is close to run through on the lateral wall of the piston tip of inflating, set up through-hole and this through-hole is linked together pump body. This mechanism of inflating has the advantage of inflating smoothly.
Description
Technical Field
The invention belongs to the technical field of drinking equipment, relates to a wine barrel, and particularly relates to an inflating mechanism.
Background
Beer is a favorite beverage for people, and is particularly frequently found in people's life in summer. At present, beer sold on the market is generally filled in a bottle or a can, before drinking, the beer or the beer can needs to be opened and drunk up in a short time, otherwise, the beer can not be stored in a sealed way, and the taste of the beer is influenced.
Therefore, a beer machine is designed and applied for Chinese patent (the application number is 200720054272.5; the publication number is CN201087129Y), the beer machine comprises a bottle body, a top cover connected with the bottle body in a sealing way, a beer outlet valve arranged at the lower part of the bottle body, a base arranged at the lower part of the bottle body, a small transparent cup and an inflating pump, and the inflating pump is arranged at the position of the top cover deviating from the center. When the beer machine is used, the beer outlet valve at the lower part of the bottle body is opened, beer in the bottle body can flow out from the beer outlet valve, and when the beer is difficult to flow out due to the sealing of the bottle body, the air can be pumped into the bottle body by pressing the air pump to pressurize, so that the beer can smoothly flow out.
However, in the inflating pump of the beer machine, the air pump assembly and the pump body are always kept in a sealing state, when the handle of the inflating pump is pressed downwards, beer can flow out due to the increased pressure in the bottle body, and when the inflating pump is pulled upwards, the lower part of the pump body can generate negative pressure, so that the handle of the inflating pump is difficult to pull upwards, and further the whole reciprocating operation process of inflating and pressurizing is not smooth.
Disclosure of Invention
The invention aims to provide an inflating mechanism aiming at the problems in the prior art, and solves the problem that an inflating pump on an existing wine barrel is not smooth in operation.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a pump body, pump piston and bottom have the venthole, the inner of pump piston stretches into the pump body just the inner pot head of pump piston is equipped with and is annular sealing member, the pump piston outer end of inflating stretches out the pump body, a serial communication port, the lateral part that the inner of pump piston has and recesses and be annular mounting groove, the sealing member set up in the mounting groove and the sealing member can make the outside of sealing member under self elastic action with pump body inner wall pastes and leans on mutually, the mounting groove is followed the axial width that the axial width of pump piston is greater than the sealing member of inflating, the mounting groove is close to run through on the lateral wall of the inner tip of pump piston and seted up the through-hole and this through-hole is linked together pump body bottom inboard.
The sealing member generally chooses the material that the texture is softer and self has certain elasticity such as rubber, silica gel to make, and after the sealing member was made cyclic annularly, if the sealing member outer wall received the extrusion, then the sealing member can have the trend of recovering the original shape under the elasticity effect of self material, and in this mechanism of inflating, the optional outer width of following slightly is greater than the sealing member of pump body hole width, then the sealing member has the trend of outwards expanding after receiving the extrusion of pump body inner wall, can make the sealing member outside can paste with pump body inner wall and lean on mutually. In the use process, because the axial width of the mounting groove is greater than the axial width of the sealing element and the sealing element is only sleeved on the outer side of the inflating piston, the sealing element can axially move relative to the mounting groove. When the inflating mechanism is used, the air outlet hole at the bottom of the pump body is communicated to the cavity of the wine barrel for containing beer. When needing to pump up the pressure, the outer end that the piston stretches out the pump body of operation pump up moves to the inner end direction, because of the outside of sealing member pastes with the pump body inner wall mutually and leans on, then under the effect of frictional force, the sealing member keeps motionless, and the piston of pumping up moves in for the sealing member until the sealing member supports and leans on the lateral wall that the mounting groove is close to the outer end, and later, the sealing member moves in along with the piston of pumping up. In the inward moving process, the outer side of the sealing element is attached to the inner wall of the pump body, one side, facing the outer end of the inflating piston, of the sealing element is attached to the side wall of the installation groove in the inflating piston, sealing between the inflating piston and the pump body is achieved, and air in the pump body is pressed out of the wine barrel to be pressurized.
When drawing out the piston of inflating, the sealing member is motionless under the effect of friction power, the piston of inflating outwards removes until sealing member and another lateral wall of mounting groove support and lean on for the sealing member, be linked together pump body bottom inboard and mounting groove all the time because of the through-hole, and the sealing member leaves the one side that the mounting groove is close to the piston outer end of inflating, then the pump body is close to the inboard space in top of the piston outer end of inflating and is linked together in clearance and the mounting groove between the piston outside of inflating and the pump body inner wall, rethread through-hole and pump body bottom inboard are linked together, be located the space of sealing member both sides in the pump body promptly and be linked together, the air in the outside can enter into pump body bottom rapidly, realize the air balance between pump.
In this the piston's of inflating inside and outside removal in-process, the sealing member can be when inflating the pressurization will inflate between the piston inner and the pump body sealed, realize inflating effectively, make the pump body top and the bottom inboard of sealing member both sides communicate each other when taking out the piston of inflating, avoided the negative pressure to influence the condition that the piston was taken out of inflating, make the use of the piston of inflating more smooth and easy, inflate more high-efficient.
In the above inflating mechanism, the bottom of the mounting groove is provided with a limiting portion protruding towards the sealing member, two sides of the limiting portion are respectively connected with two side walls of the mounting groove, and the limiting portions are distributed in a plurality and distributed around the axis of the inflating piston. The bottom of mounting groove sets up to the convex spacing portion of sealing member direction, can carry on spacingly to the inboard position of sealing member, avoids the sealing member to take place the condition of indent and make the sealed effect of sealing member lose in the in-process of round trip movement in the mounting groove, and the distance of spacing portion and sealing member is decided according to the deformation volume of sealing member, also can make the inboard counterbalance of spacing portion direct and sealing member lean on.
In the above-mentioned pumping mechanism, the end of the inner end of the pumping piston is connected with a protruding limiting member capable of generating axial elastic deformation. The limiting piece is arranged to provide limiting and buffering for inward movement of the inflating piston, and the inward movement of the inflating piston is avoided and the inflating piston is directly collided with the bottom of the pump body.
In the above inflating mechanism, the end surface of the inner end of the inflating piston is provided with a concave limiting hole, the limiting member is arranged in the limiting hole, and the end of the limiting member extends out of the limiting hole. The limiting part is arranged in the limiting hole, the limiting part can be radially limited by the hole wall of the limiting hole, the deformation of the limiting part in the axial direction is guaranteed, and the buffering effect of the limiting part is guaranteed.
In the above-mentioned pumping mechanism, the limiting member has a yielding cavity therein. The setting of cavity of stepping down can make the locating part have bigger axial deformation space, also can provide bigger bounce behind elastic deformation, provides the helping hand for pumping out of inflating the piston.
In the above-mentioned pumping mechanism, the end portion of the limiting member facing the one end of the pumping piston is open, and the end surface of the other end of the limiting member is spherical. The one end of locating part is opened for the locating part is not a totally enclosed part, only relies on self elasticity to realize deformation when receiving the extrusion, and the air that does not rely on inside compressed, and the resistance is littleer, and buffering effect is better, and the other end is the sphere and can make the locating part atress more even, is difficult for deviating from deformation.
In the above-mentioned pumping mechanism, the stopper is made of a rubber material.
As another case, in the above-described pump-up mechanism, the stopper is a spring.
In the above inflating mechanism, the air outlet is provided at one side of the bottom of the pump body, and an axial distance between the air outlet and the bottom surface of the pump body is smaller than a distance between the limiting member and the inner end face of the inflating piston. The difference of the distances ensures that the air outlet hole is always communicated with the inner side of the bottom of the pump body to discharge air when the inflating piston moves inwards to inflate and pressurize, so that the situation that the sealing element exceeds the air outlet hole when moving to cause the bottom of the pump body to form a closed space and cannot be pressed downwards continuously is avoided, and the smooth operation of the inflating piston is further ensured.
As another aspect, in the above pump mechanism, the air outlet is provided on a bottom surface of the pump body. Under the condition that the structure space allows, can set up the venthole on the bottom surface of the pump body, then the venthole can be located the inboard of inflating the piston all the time, guarantees inflating the smooth and easy of piston removal.
In foretell mechanism of inflating, the outside of inflating piston inner has the protrusion to be annular connecting portion, the mounting groove is seted up on the connecting portion, connecting portion orientation the one end of inflating piston outer end is fixed with the strengthening rib. The convex connecting part is arranged at the inner end of the inflating piston, so that the distance between the connecting part and the inner wall of the pump body is shorter, sealing is facilitated, the distances between other positions of the inflating piston and the inner wall of the pump body are longer, air can pass through the inflating piston quickly, and the operating smoothness of the inflating piston is improved.
Compared with the prior art, the inflating mechanism has the following advantages:
1. through the installation insert, the structure cooperation of sealing member and through-hole for the sealing member can realize sealed when inflating the pressurization, and cancel sealed when reverse resets, makes and inflates efficiency higher, and the resistance that resets is littleer, and whole piston's of inflating removal process is more smooth and easy.
2. Through the setting of locating part, for the down of inflating the piston provides suitable buffering, avoid inflating the piston and directly collide with the pump body bottom, and suitable rebound force can provide the helping hand for inflating the piston's restoration for inflating the piston's removal is lighter, also more smooth and easy.
Drawings
Fig. 1 is a schematic sectional view of the present pump mechanism.
FIG. 2 is an enlarged view of the inner end of the pumping piston of the present pumping mechanism.
Fig. 3 is a sectional structural view of the present pumping mechanism with the pumping piston moved outward.
In the figure, 1, a pump body; 11. an air outlet; 2. an air pumping piston; 21. a connecting portion; 21a, mounting grooves; 22. a through hole; 23. a limiting part; 24. a limiting hole; 25. reinforcing ribs; 3. a seal member; 4. a limiting member; 41. yielding cavity.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
As shown in fig. 1, 2 and 3, the pump mechanism includes a cylindrical pump body 1 and a pump piston 2, and an air outlet 11 is formed through the bottom of the pump body 1. The inner of the piston 2 of inflating stretches into the pump body 1, the outer side of the inner of the piston 2 of inflating has the protrusion to be the annular connecting portion 21 of the circle and the gap fit of the connecting portion 21 and the pump body 1, the outer side wall of the connecting portion 21 is provided with the concave annular mounting groove 21a of the circle, the annular sealing element 3 of the circle is arranged in the mounting groove 21a, the outer end of the piston 2 of inflating stretches out from the top opening of the pump body 1 and is connected with the handle, and the reinforcing rib 25 is fixed to the end, facing the outer end of the piston 2 of inflating, of.
The width of the installation groove 21a along the axial direction of the inflating piston 2 is greater than the width of the sealing element 3 along the axial line of the inflating piston 2, and the outer side surface of the sealing element 3 is attached to the inner wall of the pump body 1, so that under the action of friction force between the sealing element 3 and the inner wall of the pump body 1, when the inflating piston 2 moves inside and outside, the sealing element 3 can move relative to the installation groove 21a and abut against the two side walls of the installation groove 21a respectively. In the present embodiment, the diameter of the unfolded sealing member 3 after being taken out is slightly larger than the inner diameter of the pump body 1, so that the sealing member 3 can be better attached to the inner wall of the pump body 1 by the outer side surface of the sealing member 3 after being arranged in the pump body 1 to generate friction.
The bottom of mounting groove 21a has spacing portion 23 to the convex of sealing member 3 direction, and this spacing portion 23 is the slice, and the both sides of spacing portion 23 are even as an organic whole with the both sides wall of mounting groove 21a respectively, and the quantity of this spacing portion 23 is the several and around the axis evenly distributed of inflating piston 2. A through hole 22 is formed through the side wall of the mounting groove 21a close to the inner end part of the inflating piston 2, the through hole 22 always communicates the inner side of the bottom of the pump body 1 with the mounting groove 21a, and the sealing element 3 cannot completely block the through hole 22. In the present embodiment, the number of the through holes 22 is several and is evenly distributed around the axis of the inflating piston 2.
The end face of the inner end of the inflating piston 2 is provided with a concave limiting hole 24, a limiting piece 4 capable of generating axial elastic deformation is arranged in the limiting hole 24, and the end part of the limiting piece 4 extends out of the end face of the limiting hole 24 and protrudes out of the end face of the inner end of the inflating piston 2. In the present embodiment, the limiting member 4 has a yielding cavity 41 therein, one end of the limiting member 4 facing the limiting hole 24 is open, and the end surface of the other end is spherical; the limiting member 4 may be made of a rubber material. The air outlet hole 11 is arranged on one side of the bottom of the pump body 1, and the minimum axial distance between the air outlet hole 11 and the bottom surface of the pump body 1 is smaller than the distance of the limiting part 4 protruding out of the inner end face of the inflating piston 2.
For the convenience of description of the operation, the following description will be made with reference to the direction shown in the drawings as a specific direction. Namely, the inner end of the inflating piston 2 is the lower end, the outer end is the upper end, the bottom of the pump body 1 is the lower part, and the top of the pump body 1 is the upper part.
When the air pumping mechanism is used, the air outlet 11 at the bottom of the pump body 1 is communicated to a cavity used for containing beer in the wine barrel through a connecting pipe. When the air inflation and pressurization are needed, a handle of the air inflation piston 2 extending out of the upper end of the pump body 1 is operated to enable the air inflation piston 2 to move downwards, the sealing piece 3 is kept still under the action of friction force between the sealing piece 3 and the inner wall of the pump body 1, the air inflation piston 2 moves downwards relative to the sealing piece 3 until the sealing piece 3 abuts against the side wall on the upper side of the installation groove 21a, and then the sealing piece 3 moves downwards along with the air inflation piston 2. In the downward moving process, the outer side of the sealing element 3 is always attached to the inner wall of the pump body 1, the upper side of the sealing element 3 is attached to the upper side wall of the mounting groove 21a in the inflating piston 2, sealing between the inflating piston 2 and the pump body 1 is achieved, in the process that the inflating piston 2 presses down, gas cannot be discharged upwards from the front of the inflating piston 2 and the pump body 1, and then air at the lower part of the pump body 1 is pressed out of the air outlet hole 11 into the wine barrel to be pressurized.
When the inflating piston 2 is pulled out upwards, the sealing element 3 is fixed under the action of friction force, the inflating piston 2 moves upwards relative to the sealing element 3 until the sealing element 3 abuts against the lower side wall of the mounting groove 21a, because the sealing element 3 can not completely block the through hole 22, the through hole 22 always communicates the lower inner side of the pump body 1 with the mounting groove 21a, and the sealing element 3 leaves the upper side wall of the mounting groove 21a, the space inside the upper part of the pump body 1 is communicated with the inside of the mounting groove 21a through the gap between the outside of the connecting part 21 of the inflating piston 2 and the inner wall of the pump body 1 and is communicated with the inside of the lower part of the pump body 1 through the through hole 22, that is, the spaces at both sides of the sealing member 3 in the pump body 1 are communicated, and the air at the upper part can rapidly enter the lower part of the pump body 1, so that the air balance between the upper part and the lower part of the pump body 1 is realized, and the inflating piston 2 can be smoothly pulled out without bearing the negative pressure effect.
Example two
The present embodiment is substantially the same as the first embodiment, except that: the limiting piece 4 is a spring; the air outlet 11 is arranged on the bottom surface of the pump body 1; and the outer end of the inflating piston 2 extends out of the top of the pump body 1 and then is in transmission connection with the motor, so that when the inflating and pressurizing are needed, the driving of the inflating piston 2 can be realized by operating the motor through a switch, and the operation is more convenient.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. The inflating mechanism comprises an inflating piston (2) and a pump body (1) with an air outlet hole (11) at the bottom, wherein the inner end of the inflating piston (2) extends into the pump body (1) and the inner end of the inflating piston (2) is sleeved with a sealing element (3) in an annular shape, the outer end of the inflating piston (2) extends out of the pump body (1), the inflating mechanism is characterized in that the side part of the inner end of the inflating piston (2) is provided with a concave annular mounting groove (21a), the sealing element (3) is arranged in the mounting groove (21a) and the sealing element (3) can enable the outer side of the sealing element (3) to be attached to the inner wall of the pump body (1) under the action of self elasticity, the mounting groove (21a) is along the axial width of the inflating piston (2) is greater than the axial width of the sealing element (3), the mounting groove (21a) is close to the side wall of the inner end of the inflating piston (2), a through hole (22) is formed in a penetrating manner The inner side of the bottom is communicated with the mounting groove (21 a).
2. The inflating mechanism according to claim 1, wherein the bottom of the mounting groove (21a) is provided with a limiting portion (23) protruding towards the sealing member (3), two sides of the limiting portion (23) are respectively connected with two side walls of the mounting groove (21a), and the number of the limiting portions (23) is several and distributed around the axis of the inflating piston (2).
3. An air pumping mechanism according to claim 1 or 2, characterized in that a protruding axially elastically deformable limiting member (4) is connected to the end of the inner end of the air pumping piston (2).
4. An air pumping mechanism according to claim 3, characterized in that the end surface of the inner end of the air pumping piston (2) is provided with a concave limiting hole (24), the limiting member (4) is arranged in the limiting hole (24) and the end of the limiting member (4) extends out of the limiting hole (24).
5. An inflator mechanism according to claim 3 wherein the retainer (4) has a relief cavity (41) therein.
6. The pumping mechanism according to claim 5, characterized in that the limiting member (4) is open towards one end of the pumping piston (2), and the end surface of the other end of the limiting member (4) is spherical.
7. An inflator mechanism according to claim 3, wherein the retainer (4) is made of a rubber material.
8. The pumping mechanism according to claim 3, characterized in that the air outlet (11) is opened at one side of the bottom of the pump body (1), and the axial distance between the air outlet (11) and the bottom of the pump body (1) is smaller than the distance of the limiting member (4) protruding the end surface of the inner end of the pumping piston (2).
9. An inflation mechanism according to claim 3, wherein the air outlet hole (11) opens on the bottom surface of the pump body (1).
10. The pumping mechanism according to claim 1 or 2, characterized in that the outer side of the inner end of the pumping piston (2) is provided with a connecting part (21) which protrudes in a ring shape, the mounting groove (21a) is opened on the connecting part (21), and a reinforcing rib (25) is fixed at one end of the connecting part (21) facing the outer end of the pumping piston (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010922837.7A CN111924789A (en) | 2020-09-04 | 2020-09-04 | Inflating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010922837.7A CN111924789A (en) | 2020-09-04 | 2020-09-04 | Inflating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111924789A true CN111924789A (en) | 2020-11-13 |
Family
ID=73309677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010922837.7A Pending CN111924789A (en) | 2020-09-04 | 2020-09-04 | Inflating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111924789A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2031458U (en) * | 1988-04-25 | 1989-01-25 | 耿泮浴 | Piston inflater |
| CN2210266Y (en) * | 1994-12-20 | 1995-10-18 | 鲁广博 | Pedal type high pressure inflator |
| CN2578550Y (en) * | 2002-10-29 | 2003-10-08 | 开平盛力金属塑料制品有限公司 | Gas lamps |
| JP2006226270A (en) * | 2005-02-21 | 2006-08-31 | Kyukichi Shintaku | Bicycle pump |
| CN105065228A (en) * | 2015-08-12 | 2015-11-18 | 河北欧耐机械模具有限公司 | Inflator of inserting structure |
| CN106438282A (en) * | 2016-10-20 | 2017-02-22 | 浙江威邦机电科技有限公司 | Piston structure of dual-way hand-pulling inflation pump and inflation method of piston structure |
| CN212387724U (en) * | 2020-09-04 | 2021-01-22 | 塔罗斯科技股份有限公司 | Inflating mechanism |
-
2020
- 2020-09-04 CN CN202010922837.7A patent/CN111924789A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2031458U (en) * | 1988-04-25 | 1989-01-25 | 耿泮浴 | Piston inflater |
| CN2210266Y (en) * | 1994-12-20 | 1995-10-18 | 鲁广博 | Pedal type high pressure inflator |
| CN2578550Y (en) * | 2002-10-29 | 2003-10-08 | 开平盛力金属塑料制品有限公司 | Gas lamps |
| JP2006226270A (en) * | 2005-02-21 | 2006-08-31 | Kyukichi Shintaku | Bicycle pump |
| CN105065228A (en) * | 2015-08-12 | 2015-11-18 | 河北欧耐机械模具有限公司 | Inflator of inserting structure |
| CN106438282A (en) * | 2016-10-20 | 2017-02-22 | 浙江威邦机电科技有限公司 | Piston structure of dual-way hand-pulling inflation pump and inflation method of piston structure |
| CN212387724U (en) * | 2020-09-04 | 2021-01-22 | 塔罗斯科技股份有限公司 | Inflating mechanism |
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