CN208310983U - High pressure electric inflating pump for aerated product - Google Patents

Abstract

The utility model relates to a kind of high pressure electric inflating pumps for aerated product, including shell, plunger shaft, piston, piston driving structure；Piston driving structure includes the first motor, second motor, piston rod and driven gear wheel, first motor, second motor is installed on the shell, driven gear wheel is installed inside the shell and can be rotated around own axes, the front end of piston rod is connect with piston, the rear end of piston rod is rotatablely connected by the end face with moving axis and driven gear wheel, the first driver pinion directly or indirectly engaged with driven gear wheel is installed on the output shaft of the first motor, the second driver pinion directly or indirectly engaged with the driven gear wheel is installed on the output shaft of the second motor, reduction ratio between first driver pinion and driven gear wheel is less than the reduction ratio between the second driver pinion and driven gear wheel, when work, first motor and the second motor can only select one and work.The blowing pressure is big when the air pump is high-pressure aerated, performance is outstanding, and current loss is within the acceptable range, and motor will not generate overheat.

Description

High pressure electric inflating pump for aerated product

Technical field

The utility model relates to a kind of high pressure electric inflating pumps for aerated product.

Background technique

Piston type electric inflator pump has the blowing pressure big, but the feature that aeration speed is slow, gas production is small.Centrifugal-fan-type Electric inflating pump has aeration quantity big, and aeration speed is fast, but the feature that the blowing pressure is low.It can be carried out high-low pressure inflation to realize, Such as a kind of Chinese utility model patent " height of Patent No. ZL 200820121455.9 (notification number CN201258841Y) Pressure inflator pump " electric inflating pump that discloses, including shell, it is arranged in the intracorporal first motor of shell, is driven by first motor First piston, first piston be arranged in the first cylinder, the first cylinder be equipped with gas outlet and air intake, gas outlet connects out Tracheae, first motor connect the first control signal output end of single chip control module, the second control of single chip control module Signal output end connects the second motor, and the entrance of the second motor driven centrifugal blower, the centrifugal blower is connected to atmosphere, institute The outlet for stating centrifugal blower connects the escape pipe；First for incuding the chamber pressure of inflated object is equipped in escape pipe Pressure sensor, first pressure sensor connect the first pressure signal input part of the single chip control module, the outlet The check valve of limitation air flow direction is equipped at the air intake of pipe.The inflator pump, that is, rapidly aerated, and can inflate under high pressure.

This high-low pressure electric air pump has the following problems: making inflation pump volume larger using two kinds of modes of inflation, separately Outer internal structure is complicated.In this nearest 3 years, in order to make, aerated product is harder, shows more excellent, the pressure of aerated product Power, especially in this market SUP, pressure is almost double.Piston type electric inflator pump currently on the market, will reach this Pressure has following problem: 1, overheating, especially motor.2, current loss is done, it is therefore desirable to the battery of high-energy, but this Sample, which will lead to, cannot use the connector that cigar lighter is this on such as automobile, because cannot reach so high electric current when design, such as The small motor of fruit, current loss are acceptable, but throughput and overall performance just very low side.3, when traditional electric air pump tonifying Qi, Gas is entered from the inner cavity of shell by the gap generated between check valve or piston outer periphery on piston and piston cavity wall To secondary piston chamber tonifying Qi, during motor operation, the powder of motor electrical brush can be entered by the air-flow of tonifying Qi with secondary piston chamber To inside aerated product, dirty or damage aerated product can be done；In addition after the air of plunger shaft can by motor, gas flow temperature compared with Height cannot very well cool down plunger shaft and piston.

In conclusion existing high-low pressure electric air pump can be also further improved.

Utility model content

Technical problem to be solved in the utility model be for above-mentioned state of the art and to provide a kind of structure simple Rationally, the high pressure electric inflating pump for aerated product that is small in size and being able to achieve high-low pressure inflation, the air pump are high-pressure aerated When the blowing pressure is big, performance is outstanding, and current loss is within the acceptable range, and motor will not generate overheat.

Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of high pressure for aerated product Electric inflating pump, including shell, the front end of shell are formed with the plunger shaft being connected to shell inner cavity, and being equipped in plunger shaft can front and back The piston of sliding, is equipped with sealing ring between piston outer periphery and plunger shaft inner hole wall, plunger shaft is divided into secondary piston chamber with after by piston Plunger shaft, the front of secondary piston chamber have inflating port, it is single that allow secondary piston intracavity gas to be discharged first are equipped with only at inflating port To valve, the piston driving structure for driving piston reciprocating mobile is equipped in shell；It is characterized by: the piston driving structure includes First motor, the second motor, piston rod and driven gear wheel, first motor, the second motor installation on the shell, it is described from Dynamic gear wheel is installed inside the shell and can be rotated around own axes, and the front end of the piston rod is connect with piston, after piston rod End is rotatablely connected by the end face with moving axis and driven gear wheel, be equipped on the output shaft of first motor with it is described driven The first driver pinion that gear wheel directly or indirectly engages, be equipped on the output shaft of second motor with it is described driven big Direct geared or the second driver pinion engaged indirectly, the reduction ratio between first driver pinion and driven gear wheel Less than the reduction ratio between the second driver pinion and driven gear wheel, when work, first motor and the second motor can only One is selected to work.

Preferably, above-mentioned first driver pinion and the second driver pinion are directly engaged with driven gear wheel, the The number of teeth of one driver pinion is greater than the number of teeth of the second driver pinion.The reduction gear structure is the simplest, passes through The number of teeth of one driver pinion is greater than the number of teeth of the second driver pinion, so that between the first driver pinion and driven gear wheel Reduction ratio less than the reduction ratio between the second driver pinion and driven gear wheel.Certainly, the first driver pinion and second It can be also driven and be engaged by train of reduction gears between driver pinion and driven gear wheel.

When traditional electric air pump tonifying Qi, gas passes through the check valve or piston outer periphery on piston from the inner cavity of shell again The gap generated between piston cavity wall enters secondary piston chamber tonifying Qi, during motor operation, the powder meeting of motor electrical brush By the air-flow of tonifying Qi there is secondary piston chamber to enter inside aerated product, dirty or damage aerated product can be done.To avoid this The occurrence of, as an improvement, the front of above-mentioned secondary piston chamber is additionally provided with the first air inlet, the first air inlet, which is equipped with, only to be allowed Ambient atmos enter the intracavitary second one-way valve of secondary piston, and in piston reciprocating moving process, sealing ring makes secondary piston chamber always Hermetic seal is formed between rear plunger shaft.The structure carries out tonifying Qi by secondary piston chamber of first air inlet to plunger shaft, therefore Without carrying out tonifying Qi from rear plunger shaft, dirt (such as powder of the brush of motor) is avoided to do dirty or damage aerated product, in addition Air-flow is not reached from the pump case of electrodynamic pump, but is directly externally entering, and plunger shaft and piston can be preferably cooled down.

Tonifying Qi is carried out for convenience of to rear plunger shaft, above-mentioned shell is equipped with the second air inlet.

Further, above-mentioned second air inlet is equipped with the third check valve for only allowing ambient atmos to enter shell inner cavity, institute State the cooling for being provided at roof the first motor of corresponding installation of shell and the position of the second motor and communicating inside corresponding motor Hole.When piston Forward, under negative pressure or so, third check valve is opened, and carries out tonifying Qi to rear plunger shaft, when piston moves back, Third closed check valve, compressed gas can only be discharged by cooling hole in shell, and play cooling effect to motor, in this way A cooling is increased, but additional energy will not be consumed.

Alternatively, the front end of above-mentioned piston rod is formed with terminal pad, and the piston is fixed in terminal pad, and will sealing Circle is compressed between terminal pad and piston.The structure is affixed directly on piston rod convenient for assembling, piston rod, but is needed in this way Piston rod is slightly done to long point, so that angle very little of the piston rod with piston beat in the course of work, even if there is a beat, Sealing ring on piston can also play sealing function, not influence to use, and traditional bulb connection or hinged can also be used certainly Mode.

It further improves, above-mentioned shell includes pump case, cylinder sleeve and gland, and the cylinder sleeve passes through the institute that is fixed on pump case It states gland and is fixed on the front opening of pump case, the gland covers the opening of cylinder sleeve, and the inflating port is arranged in gland On, the inner cavity of the cylinder sleeve constitutes the plunger shaft, and the inner cavity of pump case constitutes the inner cavity of shell.Pump case, cylinder sleeve and gland can be adopted Be made of unlike material, if pump case and gland can use plastics straight forming, cylinder sleeve using low friction but high-termal conductivity material Material does (such as aluminized coating Teflon), can reduce current loss, and Quick diffusing heat in this way.

Preferably, the center close-fitting of above-mentioned driven gear wheel has rotary shaft, the rotary shaft is supported on pump by bearing On the roof of shell.Gear wheel rotation driven in this way is more smooth.

Similarly, the end face that above-mentioned driven gear wheel deviates its rotation axis, which tightens, is provided with moving axis, the central axes with moving axis It is parallel with the rotation axis of driven gear wheel, the rear end for being supported on piston rod by bearing with moving axis.

Compared with the prior art, the advantages of the utility model are: using two motors, and pass through the different small teeth of active Wheel is engaged with driven gear wheel simultaneously, and different reduction ratio are formed between each driver pinion and driven gear wheel.Work as air pump From low pressure start to work, the first motor operations, this be slow down it is relatively low (such as: only 1:5, i.e. the first driver pinion rotation 5 Circle, driven 1 circle of gear wheel rotation), it starts to work, band piston starts high-speed motion, in this way to guarantee big throughput.At this In a stage, the second motor does not work, only dragged.When pressure rises, that is to say, that the current loss of the first motor starts Rise, by a control structure, can be using such as one switching relay of mechanical or electronics a switch control Device stops the first motor and starts the second motor.The reduction ratio of second motor higher (such as 1:10, i.e., the second actively small tooth 10 circle of wheel rotation, driven 1 circle of gear wheel rotation), higher pressure can be reached, and in an acceptable exhaustion range. In this stage, the first motor does not work, only dragged.The equipment of this first motor of switching or the second motor operations can be with According to pressure achieved come work, for example to 10psi when starts to switch, therefore will use a mechanical or electronics A switch control such as switching relay.It is also possible to the loss according to the first motor, such as when 10A, starts to cut The first motor or the second motor operations are changed, collected current will be carried out using a wiring board in this case and control such as one Switch relay, this mode can be the performance that inflator pump reaches best, and current loss is within the acceptable range.Really Motor is protected to work close to the position of its maximum efficiency curve always, it is this is to say, consumed under identical work Energy is smaller, therefore less heat comes out.In addition when the second motor at work, the first motor is filled in cooling When next product, when the first motor operations, the second motor is cooling.More products may be thus filled, and The case where avoiding motor from generating overheat.The air pump service life is double: the brush of motor is halved using the time.This air pump only has a kind of piston Modes of inflation, structure is more simple, small in size.

Detailed description of the invention

Fig. 1 is the schematic perspective view one of the utility model embodiment；

Fig. 2 is the schematic perspective view two of the utility model embodiment；

Fig. 3 is that the utility model embodiment removes the schematic perspective view after the pump case of part；

Fig. 4 is the cross-sectional view one of the utility model embodiment；

Fig. 5 is the cross-sectional view two of the utility model embodiment；

Fig. 6 is the schematic perspective view of piston driving structure in the utility model embodiment；

Fig. 7 is that pump case removes the schematic perspective view after bottom cover in the utility model embodiment.

Specific embodiment

The utility model is described in further detail below in conjunction with figure embodiment.

It is a preferred embodiment of the utility model as shown in Fig. 1~7.

A kind of high pressure electric inflating pump for aerated product, including shell 1, the front end of shell 1 are formed with and shell 1 The piston 2 that energy front and back slides is equipped in the plunger shaft S of inner cavity connection, plunger shaft S, between 2 periphery of piston and plunger shaft S inner hole wall Equipped with sealing ring 21, plunger shaft S is divided into secondary piston chamber S1 and rear plunger shaft S2 by piston 2, and the front of secondary piston chamber S1, which has, to be filled Port 4, being equipped at inflating port 4 only allows the first check valve 3a that gas is discharged in secondary piston chamber S1, and the rear portion in shell 1 is equipped with The piston driving structure moved back and forth with piston 2.

The improvement of the utility model is: piston driving structure includes the first motor 5a, the second motor 5b, piston rod 6 With driven gear wheel 7, the first motor 5a, the second motor 5b are mounted on shell 1, and driven gear wheel 7 is mounted in shell 1 and energy It is rotated around own axes, the center close-fitting of driven gear wheel 7 has rotary shaft 72, and rotary shaft 72 is supported on pump case 11 by bearing 10 Roof on.The front end of piston rod 6 is connect with piston 2, and the front end of piston rod 6 is formed with terminal pad 61, and the piston 2 is fixed on In terminal pad 61, and the sealing ring 21 is compressed between terminal pad 61 and piston 2.The rear end of piston rod 6 passes through band moving axis 71 are rotatablely connected with the end face of driven gear wheel 7, and the end face that driven gear wheel 7 deviates its rotation axis, which tightens, is provided with moving axis 71, the central axes with moving axis 71 are parallel with the rotation axis of driven gear wheel 7, and band moving axis 71 is supported on piston rod by bearing 10 6 rear end.

The first driver pinion directly or indirectly engaged with driven gear wheel 7 is installed on the output shaft of the first motor 5a 8a is equipped with the second driver pinion 8b directly or indirectly engaged with driven gear wheel 7 on the output shaft of the second motor 5b.

Reduction ratio between first driver pinion 8a and driven gear wheel 7 is less than the second driver pinion 8b and driven big Reduction ratio between gear 7 similarly drives driven gear wheel 7 to select one week, what the first driver pinion 8a to be rotated Number is enclosed less than the second driver pinion 8b circle number to be rotated.The first driver pinion 8a and second is actively small in the present embodiment Gear 8b is directly engaged with driven gear wheel 7, and the number of teeth of the first driver pinion 8a is greater than the tooth of the second driver pinion 8b Number.Reduction ratio, the i.e. transmission ratio of deceleration device, generally gear ratio.

When work, the first motor 5a and the second motor 5b can only select one and work.This first motor 5a of switching or the The equipment of two motor 5b work can be according to pressure achieved come work, for example to 10psi when starts to switch, therefore meeting Use mechanical or electronics a a switch control such as switching relay.It is also possible to the damage according to the first motor 5a Consumption, for example when 10A, start to switch the first motor 5a or the second motor 5b work, a line will be used in this case Road plate carrys out collected current and controls a such as switching relay.

Shell 1 includes pump case 11, cylinder sleeve 12 and gland 13, and cylinder sleeve 12 is fixed by gland 13 being fixed on pump case 11 On the front opening of pump case 11, gland 13 covers the opening of cylinder sleeve 12, and inflating port 4 and the first air inlet 9a are arranged at pressure On lid 13, the inner cavity of cylinder sleeve 12 constitutes plunger shaft S, and the inner cavity of pump case 11 constitutes the inner cavity of shell 1, and pump case 11 is again by upper casing and bottom Lid composition.

The first air inlet 9a is additionally provided on gland 13, the first air inlet 9a, which is equipped with, only allows ambient atmos to enter secondary piston Second one-way valve 3b in chamber S1, in 2 reciprocating movement of piston, sealing ring 21 makes secondary piston chamber S1 and rear plunger shaft always Hermetic seal is formed between S2.The bottom cover of pump case 11 is equipped with the second air inlet 9b.Second air inlet 9b, which is equipped with, only allows the external world Gas enters the third check valve 3c of 1 inner cavity of shell, roof the first motor 5a of corresponding installation of the upper casing of pump case 11 and the second horse Cooling hole 111 is provided at up to the position of 5b.

First check valve 3a, second one-way valve 3b and third check valve 3c are breathing piece.

When gear wheel 7 rotates, it will drive piston rod 6 and all accessories be moved forward and backward.

When the piston 2 on piston rod 6 moves from front to back, air enters from second one-way valve 3b, and before filling up Plunger shaft S1 avoids dirt (such as powder of the brush of motor) from doing dirty or damage there is no need to carry out tonifying Qi from rear plunger shaft S2 Bad aerated product, in addition air-flow is not reached from the pump case of electrodynamic pump 11, but is directly externally entering, and can preferably cool down cylinder sleeve 12, piston 2 and gland 13.Meanwhile third check valve 3c is closed, the air being drawn into pump case 11 originally is pushed into cooling Hole 111 enters back into cooling motor inside motor, is finally discharged to shell exterior from motor rear portion.Therefore this cooling is " to exempt from Take ", do not need additional energy.

When the piston 2 on piston rod 6 moves from back to front, second one-way valve 3b is closed.The gas of inflation is from first Check valve 3a discharge.Meanwhile third check valve 3c is opened, and air is allowed to enter in pump case 11.

When air pump from low pressure start to work, the first motor 5a work, this be slow down it is relatively low (such as: only 1:5, be exactly Say that motor 5a and pinion gear 8a mono- minute turn 10000 times, 7 turns of gear wheel 2000 times, i.e. 5 circle of the first driver pinion 8a rotation, Driven 1 circle of the rotation of gear wheel 7), it starts to work, band piston 2 starts high-speed motion, in this way to guarantee big throughput.At this In a stage, the second motor 5b does not work, only dragged.When pressure rises, that is to say, that the current loss of the first motor 5a It begins to ramp up, by a control structure, can be using mechanical or electronics switch control such as one switching Relay stops the first motor 5a and starts the second motor 5b.The reduction ratio of second motor 5b is higher, and (such as 1:10 is exactly Say that motor 5a and pinion gear 8a mono- minute turn 10000 times, 7 turns of gear wheel 1000 times.That is 10 circle of the second driver pinion 8b rotation, Driven 1 circle of the rotation of gear wheel 7), higher pressure can be reached, and in an acceptable exhaustion range.In this stage, First motor 5a does not work, only dragged.The equipment of this first motor 5a of switching or the second motor 5b work can basis Pressure achieved carrys out work, for example to 10psi when starts to switch, therefore will use one and mechanical or electronics open Close a control such as switching relay.It is also possible to the loss according to the first motor 5a, for example when 10A, starts to switch First motor 5a or the second motor 5b work will be carried out collected current using a wiring board in this case and control such as one A switching relay, this mode can be the performance that inflator pump reaches best, and current loss is within the acceptable range. Ensure that motor works close to the position of its maximum efficiency curve always, this is to say, under identical work, is consumed Energy it is smaller, therefore less heat comes out.In addition when the second motor 5b at work, the first motor 5a is cold But, when filling next product, when the first motor 5a work, the second motor 5b is cooling.It may thus fill more Product, and avoid motor generate overheat the case where.The air pump service life is double: the brush of motor is halved using the time.

Although the preferred embodiments of the utility model have been described above in detail, it is to be clearly understood that for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.

Claims (9)

1. a kind of high pressure electric inflating pump for aerated product, including shell (1), the front end of shell (1) be formed with outside The plunger shaft (S) of shell (1) inner cavity connection, be equipped in plunger shaft (S) can the piston (2) that slides of front and back, piston (2) periphery with Sealing ring (21) are equipped between plunger shaft (S) inner hole wall, plunger shaft (S) is divided into secondary piston chamber (S1) and rear piston by piston (2) The front of chamber (S2), secondary piston chamber (S1) has inflating port (4), and being equipped at inflating port (4) only allows secondary piston chamber (S1) interior gas The first check valve (3a) of body discharge, the rear portion in shell (1) are equipped with the piston driving structure moved back and forth with piston (2)； It is characterized by: the piston driving structure includes the first motor (5a), the second motor (5b), piston rod (6) and driven canine tooth It takes turns (7), first motor (5a), the second motor (5b) are mounted on shell (1), and the driven gear wheel (7) is mounted on outer It can rotate in shell (1) and around own axes, the front end of the piston rod (6) is connect with piston (2), and the rear end of piston rod (6) is logical The end face with moving axis (71) and driven gear wheel (7) is crossed to be rotatablely connected, be equipped on the output shaft of first motor (5a) with The first driver pinion (8a) that the driven gear wheel (7) is directly or indirectly engaged, the output shaft of second motor (5b) On the second driver pinion (8b) directly or indirectly engaged with the driven gear wheel (7) is installed, described first is actively small Reduction ratio between gear (8a) and driven gear wheel (7) is less than between the second driver pinion (8b) and driven gear wheel (7) Reduction ratio, when work, first motor (5a) and the second motor (5b) can only select one and work.

2. being used for the high pressure electric inflating pump of aerated product according to claim 1, it is characterised in that: described first actively Pinion gear (8a) and the second driver pinion (8b) are directly engaged with driven gear wheel (7), the first driver pinion (8a) The number of teeth is greater than the number of teeth of the second driver pinion (8b).

3. being used for the high pressure electric inflating pump of aerated product according to claim 1, it is characterised in that: the secondary piston chamber (S1) front is additionally provided with the first air inlet (9a), and the first air inlet (9a), which is equipped with, only allows ambient atmos to enter secondary piston chamber (S1) second one-way valve (3b) in, in piston (2) reciprocating movement, the sealing ring (21) makes secondary piston chamber always (S1) hermetic seal is formed between rear plunger shaft (S2).

4. being used for the high pressure electric inflating pump of aerated product according to claim 1, it is characterised in that: the shell (1) It is equipped with the second air inlet (9b).

5. being used for the high pressure electric inflating pump of aerated product according to claim 4, it is characterised in that: second air inlet Mouth (9b) is equipped with the third check valve (3c) for only allowing ambient atmos to enter shell (1) inner cavity, the roof pair of the shell (1) Should install be provided at the position of the first motor (5a) and the second motor (5b) to the cooling hole that is communicated inside corresponding motor (111)。

6. being used for the high pressure electric inflating pump of aerated product according to claim 5, it is characterised in that: the piston rod (6) front end is formed with terminal pad (61), and the piston (2) is fixed on terminal pad (61), and the sealing ring (21) are pressed System is between terminal pad (61) and piston (2).

7. being used for the high pressure electric inflating pump of aerated product according to claim 1, it is characterised in that: the shell (1) Including pump case (11), cylinder sleeve (12) and gland (13), the cylinder sleeve (12) passes through the gland that is fixed on pump case (11) (13) it is fixed on the front opening of pump case (11), the gland (13) covers the opening of cylinder sleeve (12), the inflating port (4) it is arranged on gland (13), the inner cavity of the cylinder sleeve (12) constitutes the plunger shaft (S), and the inner cavity of pump case (11) constitutes outer The inner cavity of shell (1).

8. being used for the high pressure electric inflating pump of aerated product according to claim 7, it is characterised in that: the driven canine tooth The center close-fitting of wheel (7) has rotary shaft (72), and the rotary shaft (72) is supported on the roof of pump case (11) by bearing (10).

9. being used for the high pressure electric inflating pump of aerated product according to claim 1, it is characterised in that: the driven canine tooth The end face that wheel (7) deviates its rotation axis is tightened equipped with the band moving axis (71), the central axes with moving axis (71) and driven canine tooth The rotation axis for taking turns (7) is parallel, and the band moving axis (71) is supported on the rear end of piston rod (6) by bearing (10).