CN108443106A - A kind of back and forth parallel rod-type transmission device and electric air pump - Google Patents
A kind of back and forth parallel rod-type transmission device and electric air pump Download PDFInfo
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- CN108443106A CN108443106A CN201810430319.6A CN201810430319A CN108443106A CN 108443106 A CN108443106 A CN 108443106A CN 201810430319 A CN201810430319 A CN 201810430319A CN 108443106 A CN108443106 A CN 108443106A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 65
- 230000033001 locomotion Effects 0.000 claims abstract description 39
- 230000000694 effects Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 description 15
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
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- 230000003434 inspiratory effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/01—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being mechanical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of reciprocal parallel rod-type transmission device and electric air pumps, belong to air charging system technical field.It includes piston, connecting rod, interconnecting piece, cam pin and rotating disc, connecting rod and piston are an integral structure, the central axis of piston and the central axis of connecting rod are mutually parallel, the interconnecting piece that the other end of connecting rod is provided with, cam pin is provided on rotating disc, elongate holes are provided on interconnecting piece, elongate holes are equal as the track of turn disc is formed by diameter of a circle with cam pin along the interior chamber size perpendicular to length of connecting rod direction, cam pin is located in elongate holes, rotating disc is connect with driving motor, driving motor is moved back and forth by drive link band piston in cylinder body, the direction for the power that connecting rod acts on piston is parallel to the central axis of piston always, to solve the problems, such as that the central axis of piston and the central axis of cylinder body are not parallel in reciprocatory movement.The present invention has the advantages that low energy consumption, exhaust efficiency is high, with long service life.
Description
Technical field
The invention belongs to air charging system technical fields, are related to a kind of back and forth parallel rod-type transmission device and electric air pump.
Background technology
Hand electric air pump is one kind by motor drive, completes some inflation work, such as to balloon, basketball,
Swim ring, automobile tire etc. need the everyday tools of charge operation.Compared with previous hand-operated tools, hand electric air pump
Occur greatly facilitating the daily inflation work requirements of worker or user.
Existing air pump includes mainly：The pump housing and cylinder, cylinder is interior to be equipped with connecting rod, cylinder body, piston, air inlet and outlet
Mouthful.Cylinder is arranged in the pump housing, and the connecting rod in cylinder drives the reciprocating motion of the pistons in cylinder under external force, and piston is past
During multiple movement, external gas enters cylinder interior from air inlet, is preferentially absorbed into the gas come and makees in piston and cylinder
It is compressed with lower, and is discharged into and is waited in air charging system by gas outlet.
And there are following two aspect is insufficient for existing electric air pump structure：When external gas enter in cylinder process by
It cannot be fitted closely in piston and cylinder and cause gas leakage, after being especially used for a long time, piston easily deforms with cylinder, piston
Gap is therefore generated with cylinder and causes gas leakage in intake process, this more easily leads to the low problem of intake efficiency；Second is that driving piston
Connecting rod mostly be with piston as one, in reciprocating motion of the pistons, connecting rod is constantly swung within the scope of certain angle, i.e. connecting rod
Central axis and the central axis of piston between there are angles, and the angle of this angle constantly changes, thus
The direction for leading to act on the power on piston is also continually changing, thus piston generates cylinder inner wall larger lateral pressure,
This lateral pressure easily causes cylinder and piston deformation, and this aspect shortens the service life of cylinder and piston, is on the other hand also easy
Gas leakage is caused, the exhaust efficiency of air pump is reduced；In addition, the frictional force during this between piston and cylinder is also larger, because
And energy consumption is larger during reciprocating motion of the pistons.
Chinese invention patent, notification number：CN102937077B, the day for announcing：On August 12nd, 2015, discloses a kind of air pump,
It includes piston cylinder and the piston that is arranged inside the piston cylinder；Further include intake valve and air outlet valve；The intake valve and institute
Air outlet valve is stated to be connected to the same end of the piston cylinder；The intake valve includes the first valve chamber being connected with each other, the first air inlet
Pipe and the first escape pipe；The both ends of first valve chamber have been respectively communicated with the first air inlet pipe and the first escape pipe；Described first goes out
Tracheae is connected to the piston cylinder, first air inlet pipe and atmosphere；It is equipped in first valve chamber remote in the piston
It can be in the first air inlet pipe first described in the promotion lower edge of gas when the one end being connected to the intake valve from the piston cylinder
The axial movement of valve chamber, until the air inlet spool that first valve chamber, the first air inlet pipe are connected to the first escape pipe.The air pump energy
Enough functions of realizing progress positive pressure inflation and negative inspiratory pressure, it is easy to use.Its shortcoming is：(1) one end of the device connecting rod
With piston using rotation pin connection, so movement of connecting rod is essentially plane motion, one end that connecting rod is connect with piston
Do linear reciprocating motion together along with piston, the other end of connecting rod moves in a circle under the driving of motor, this structure and
The direction that motion mode results in the power that connecting rod is applied on piston constantly changes, thus piston generates cylinder larger side pressure
Power and frictional force, and then the energy consumption of air pump is caused to increase, the lost of life；(2) wear damage of rotational pin is very fast, and rotational pin
Replacement, attended operation it is cumbersome.
Chinese invention patent, publication No.：CN103195683A, date of publication：On July 10th, 2013, disclose a kind of inflation
Pump connector and inflator pump, inflator pump connector includes the first connecting plate and the second connecting plate, the bottom end of the first connecting plate and the
The top of two connecting plates links together；First connecting plate is equipped with compression cylinder mounting hole, and the second connecting plate is filled equipped with power
Mounting hole is set, compression cylinder mounting hole and power plant mounting hole are through-hole.Inflator pump includes power plant and transmission device, power
Device and transmission device are linked together by above-mentioned inflator pump connector, and the power plant includes motor, the motor
First transmission gear is installed on output shaft；The transmission device includes connecting shaft and connecting rod piston, and the connecting shaft is fixed on
In the eccentric point of first transmission gear, one end of the connecting rod piston is sleeved in connecting shaft, and the other end is equipped with piston ring；It is described
Connecting rod piston is sleeved in compression cylinder, and the compression cylinder is sleeved in compression cylinder mounting hole, and the motor is fixed on the second connection
On plate, and the output shaft of motor passes through in power mounting hole.This inflator pump have it is simple in structure, be easy to cast, shape compared with
It is small, weight is smaller, the advantageous effects such as cheap.But disadvantage is that：One end of connecting rod piston is sleeved on connecting shaft
On, connecting shaft drives connecting rod piston to move back and forth during being rotated with the first transmission gear, but this structure lower link
There is also certain swings for piston, rather than do linear reciprocating motion, thus connecting shaft acts on the side of the power on connecting rod piston
To being also continually changing, piston generates compression cylinder larger lateral pressure and frictional force, and then the energy consumption of inflator pump is caused to increase
Add, the lost of life.
Chinese utility model, notification number：CN201218176Y, date of publication：It on April 8th, 2009, discloses one kind and inflates
Pump, it includes air outlet valve, cylinder, piston, connecting rod, cam, main shaft, and air outlet valve is arranged in the top of cylinder, piston sliding setting
In the inside of cylinder, cam is socketed on main shaft, and offset distance is equipped between the axle center of main shaft and the axle center of cylinder, and the top of connecting rod is solid
Surely it is connected on the bottom of piston, the bottom stretches out cylinder of connecting rod is connect with cam.The utility model utilizes main shaft and cylinder
Axle center offset distance makes the fit angle between piston and cylinder change and form gap, and then from cylinder bottom natural inflow,
But its there are the deficiencies of following two aspects：(1) when cam rotates, pillar eccentric rotary is driven, in turn results in connecting rod application
The direction of power on piston constantly changes, thus piston can equally generate cylinder larger lateral pressure and frictional force, in turn
The energy consumption of air pump is caused to increase, the lost of life when being an integral structure in particular by connecting rod and piston, is more easy to generate cylinder
Larger lateral pressure and frictional force also easily causes connecting rod cracking when connecting rod swing amplitude is excessive；(2) between piston and cylinder
The gap that fit angle changes and formed makes air inlet be easy, but can also there are problems that gas leakage in exhaust process, because
And treat inflatable objects be inflated it is less efficient.
Invention content
1, it to solve the problems, such as
The electric air pump that connecting rod and piston for existing driving piston are an integral structure, in reciprocating motion of the pistons process
In, the central axis of piston and the not parallel problem of the central axis of cylinder body, the present invention provide a kind of reciprocal parallel rod-type transmission
Device and electric air pump.Its connecting rod is not swung, and for piston in reciprocatory movement, connecting rod acts on the power on piston
Direction is parallel to the central axis of piston always, and the central axis of piston is also parallel to the central axis of cylinder body always, to keep away
Exempted from due to the direction for the power that connecting rod acts on piston changes and cause piston to cylinder body generate larger lateral pressure and
The problem of frictional force.2, technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of reciprocal parallel rod-type transmission device, including piston and connecting rod, one end of the connecting rod and piston one
Connection, that is, be an integral structure, and the central axis of the central axis of the piston and the connecting rod is mutually parallel, described reciprocal flat
Row rod-type transmission device further includes interconnecting piece, cam pin and rotating disc, and the other end of the connecting rod is provided with the interconnecting piece,
It is provided with the cam pin on the rotating disc, elongate holes are provided on the interconnecting piece, the cam pin is located at described
In elongate holes, the cam pin is in the elongate holes along movement rail when being moved perpendicular to the length of connecting rod direction
Mark be formed by straight line length be equal to the cam pin with the turn disc when movement locus be formed by it is round
The length of diameter, the rotating disc are connect with the driving motor.
Further, the cam pin is cylindrical type, and the elongate holes are along on the length of connecting rod direction
Chamber size is matched with the diameter of the cylindrical type cam pin.
Further, the periphery of the rotating disc is provided with teeth, and transmission is provided on the output shaft of the driving motor
Gear, the teeth on the rotating disc are intermeshed with the transmission gear.
Further, further include the driven gear of setting coaxial with the rotating disc, on the output shaft of the driving motor
It is provided with transmission gear, the driven gear is intermeshed with the transmission gear.
Further, the piston offers through-hole along central axial direction, and one-way air inlet is equipped in the through-hole
Valve.
Further, the piston includes piston only and rear cover, and the piston only is close to one end of the exhaust outlet
Open up fluted, the groove is matched with the outer diameter of the rear cover, and the rear cover and the piston only are along the piston
Central axial direction offer through-hole one and through-hole two respectively, the breather cheek valve is installed in the through-hole two.
Further, the breather cheek valve includes blocking first and elastic element one, one end of the elastic element one
With it is described block it is first be fixedly connected, the other end of the elastic element one is fixedly connected with the rear cover, it is described blocking it is first
The through-hole two is blocked under the elastic force effect of the elastic element one from inside to outside.
Further, it is provided with annular groove on the outer wall of the piston only, sealing is installed in the annular groove
Circle.
A kind of electric air pump, including the reciprocal parallel rod-type transmission device and cylinder body, the piston are located at the cylinder
Internal portion, the one end of the cylinder body far from the piston are provided with exhaust outlet, and the exhaust ports are equipped with one-way exhaust valve, institute
State driving motor drives the piston to be moved back and forth in the cylinder body by the driving connecting rod, the institute in reciprocatory movement
The central axis for stating piston is parallel to the central axis of the cylinder body always.
Further, further include shell and exhaust passage, the cylinder body, the reciprocal parallel rod-type transmission device and described
Driving motor is respectively positioned in the shell, and one end of the shell offers hole, and the exhaust outlet passes through the exhaust passage
It is connected to the hole.
3, advantageous effect
Compared with the prior art, beneficial effects of the present invention are：
(1) reciprocal parallel rod-type transmission device provided by the invention, cam pin carry out circumference fortune with turn disc
Dynamic, the interconnecting piece with elongate holes being arranged on connecting rod is matched with cam pin, which is decomposed into along strip
Straight line componental movement on shape hole length direction and along the reciprocal componental movement on length of connecting rod direction, due to elongate holes perpendicular to
It is equal that interior chamber size on length of connecting rod direction and cam pin circular motion track are formed by diameter of a circle, thus the structure exists
Connecting rod swing will not be caused in motion process, thus can ensure the direction of the power that cam pin is applied on connecting rod always with cylinder body
Central axis, central axis, the central axis of connecting rod of piston it is parallel always；
(2) reciprocal parallel rod-type transmission device provided by the invention, elongate holes are along the inner cavity on length of connecting rod direction
The matched structure of diameter of size and cylindrical type cam pin, can ensure that reciprocating motion of the pistons is synchronous with the rotation of cam pin,
I.e. will not there is a phenomenon where cam pin rotate and piston is failure to actuate；
(3) reciprocal parallel rod-type transmission device provided by the invention is directly arranged in rotating disc periphery defeated with driving motor
The rotation of the intermeshing teeth of shaft upper transfer gear, transmission gear drives turn disc, to drive cam pin to do circle
Zhou Yundong, this structure are directly driven using existing rotating disc, and the structure member of transmission device is reduced；
(4) reciprocal parallel rod-type transmission device provided by the invention, the rotation band of driving motor output shaft upper transfer gear
Dynamic driven gear rotation, to drive the turn disc coaxial with driven gear, and then makes cam pin move in a circle, this
Structure can select different transmission gears and driven gear to match flexibly to adjust transmission ratio；
(5) reciprocal parallel rod-type transmission device provided by the invention, when piston is moved to exhaust outlet direction, piston compression
Air in cylinder body is simultaneously discharged by one-way exhaust valve, and air enters object to be inflatable body；When piston is away from exhaust outlet
Direction movement when, one-way exhaust valve is closed, breather cheek valve is opened, under the suction function formed in cylinder body, extraneous sky
Gas enters cylinder interior by the through-hole breather cheek valve on piston；
(6) reciprocal parallel rod-type transmission device provided by the invention, piston only and rear cover have dismounting easy for installation
Feature, this structure are convenient for carrying out dismounting and change or maintenance to breather cheek valve, and rear cover, which has, prevents breather cheek valve from loosening
Effect；
(7) reciprocal parallel rod-type transmission device provided by the invention, block that first and elastic element one forms it is unidirectional into
Air valve have it is simple in structure, dismantle, replace convenient advantage；
(8) reciprocal parallel rod-type transmission device provided by the invention, by opening up annular groove outside piston only, and
Sealing ring is installed on annular groove, increases the leakproofness between piston and cylinder body, reduces air inlet energy consumption, piston and cylinder body
Exhaust efficiency also improve 20% or more, have a good application prospect；
(9) electric air pump provided by the invention, in gas replenishment process, connecting rod will not be swung, the driving force of driving motor
After being converted by reciprocating linear motion conversion mechanism, the direction of the power acted on piston is parallel to the central shaft of piston always
Line, for piston in reciprocatory movement, the central axis of piston is parallel to the central axis of cylinder body always, so as to avoid due to
The direction for the power that connecting rod acts on piston changes and piston is caused to generate larger lateral pressure and frictional force to cylinder body
Problem；
(10) electric air pump provided by the invention inside the shell by the setting of each component is conveniently operated use, improves safety
Property and portability.
Description of the drawings
Fig. 1 is reciprocal parallel rod-type transmission structures schematic diagram；
Fig. 2 is the enlarged diagram of piston structure；
Fig. 3 is the stereoscopic schematic diagram of electric air pump ontology；
Fig. 4 is the installation position schematic diagram of guide groove.
In figure：1, cylinder body；2, piston；3, connecting rod；4, interconnecting piece；5, cam pin；6, rotating disc；7, exhaust outlet；8, it blocks
First two；9, elastic element two；10, sealing ring；14, annular groove；15, rear cover；16, shell；17, guide groove.
Specific implementation mode
The present invention is further described below in the following with reference to the drawings and specific embodiments.
Embodiment 1
As shown in Figure 1, a kind of reciprocal parallel rod-type transmission device, including piston 2 and connecting rod 3, one end of the connecting rod 3 and
The piston 2 is an integral structure, and the central axis of the central axis of the piston 2 and the connecting rod 3 is mutually parallel, described past
Multiple parallel rod-type transmission device further includes interconnecting piece 4, cam pin 5 and rotating disc 6, and the other end of the connecting rod 3 is provided with described
Interconnecting piece 4, the cam pin 5 is provided on the rotating disc 6, is provided with elongate holes on the interconnecting piece 4, it is described partially
Heart pin 5 is located in the elongate holes, and the cam pin 5 is in the elongate holes along perpendicular to 3 length side of the connecting rod
The length that straight line is formed by movement locus when movement is equal to the cam pin 5 with the fortune when rotating disc 6 rotates
Dynamic rail mark is formed by the length of diameter of a circle, and the rotating disc 6 is connect with the driving motor.
Rotating disc 6 in the present embodiment is disc, and cam pin 5 is arranged in the eccentric point of rotating disc 6, and driving motor drives
When turn Moving plate 6 rotates, cam pin 5 carries out circular motion, this is carried by cam pin 5 with what is be arranged on connecting rod 3 in the process
The cooperation of the interconnecting piece 4 and cam pin 5 of elongate holes, which is decomposed into along straight on elongate holes length direction
Line componental movement and along the reciprocal componental movement on 3 length direction of connecting rod, since elongate holes are on 3 length direction of connecting rod
It is equal that interior chamber size and 5 circular motion track of cam pin are formed by diameter of a circle, thus along on elongate holes length direction
Straight line componental movement will not cause connecting rod 3 swing, and by along on 3 length direction of connecting rod reciprocal componental movement act on connecting rod 3
On power direction it is constant always, therefore the reciprocal parallel rod-type transmission device in the present embodiment can ensure cam pin 5 apply
Central axis of the direction of power on connecting rod 3 always with the central axis of cylinder body 1, the central axis of piston 2, connecting rod 3 begins
It is parallel eventually.
The integral structure that piston 2 and connecting rod 3 in the present embodiment use, can be that piston 2 and connecting rod 3 are integrally machined into
The structure of type, can also in such a way that the piston 2 of separate structure is fixedly connected by bolt and nut etc. with connecting rod 3 so that
Connecting rod 3 cannot be rotated or be swung relative to piston 2, and piston 2 and connecting rod 3 are integrated the structure of machine-shaping, example in the present embodiment
As notification number is the structure used in the utility model of CN201218176Y in background technology.
As shown in figure 4, in order to further avoid connecting rod 3 from swinging, guider can be set to protect in the outside of cylinder body 1
Connecting rod 3 is demonstrate,proved during linear reciprocating motion, will not be swung, for example, guide groove is arranged in the outside of cylinder body 1 in the present embodiment
17, connecting rod 3 passes through guide groove 17, so that connecting rod 3 can only do linear reciprocating motion in guide groove 17, without putting
It is dynamic.
Embodiment 2
As shown in Figure 1, a kind of reciprocal parallel rod-type transmission device, structure compared with Example 1, except that：Institute
It is cylindrical type to state cam pin 5, and the elongate holes are along interior chamber size and the cylindrical type on 3 length direction of the connecting rod
The diameter of cam pin 5 matches, i.e. the diameter of the cam pin 5 and the width of the elongate holes is fitted close, it is this can
It is synchronous with the rotation of cam pin 5 to ensure that piston 2 is moved back and forth, i.e., will not occur that cam pin 5 rotates and what piston 2 was failure to actuate show
As.
Embodiment 3
As shown in Figure 1, a kind of reciprocal parallel rod-type transmission device, structure compared with Example 1, except that：Institute
The periphery for stating rotating disc 6 is provided with teeth, is provided with transmission gear on the output shaft of the driving motor, on the rotating disc 6
Teeth and the transmission gear be intermeshed, directly in the setting of 6 periphery of rotating disc and driving motor output shaft upper transfer gear
The rotation of intermeshing teeth, transmission gear drives rotating disc 6 to rotate, to drive cam pin 5 to move in a circle, this knot
Structure is directly driven using existing rotating disc 6, and the structure member of transmission device is reduced.
Embodiment 4
As shown in Figure 1, a kind of reciprocal parallel rod-type transmission device, structure compared with Example 1, except that：Also
Include the driven gear of setting coaxial with the rotating disc 6, transmission gear is provided on the output shaft of the driving motor, it is described
Driven gear is intermeshed with the transmission gear, and the rotation of driving motor output shaft upper transfer gear drives driven tooth rotation
It is dynamic, to drive the rotating disc 6 coaxial with driven gear to rotate, and then cam pin 5 is made to move in a circle, this structure can be selected
It selects different transmission gears and driven gear is matched flexibly to adjust transmission ratio.
Embodiment 5
As shown in Figure 1, a kind of reciprocal parallel rod-type transmission device, structure compared with Example 1, except that：Institute
It states piston 2 and offers through-hole along central axial direction, breather cheek valve is installed in the through-hole, driving motor passes through driving
The connecting rod 3 drives in 2 reciprocatory movement of the piston, the formation negative pressure of 1 periodically of cylinder body, under the action of negative pressure air
Enter in cylinder body 1 from breather cheek valve.
Embodiment 6
As depicted in figs. 1 and 2, a kind of reciprocal parallel rod-type transmission device, structure are compared with Example 5, different
It is：The piston 2 include piston only and rear cover 15, the piston only opened up close to one end of the exhaust outlet 7 it is fluted,
The groove is matched with the outer diameter of the rear cover 15, the rear cover 15 and the piston only along the piston 2 center
Axis direction offers through-hole one and through-hole two respectively, and the breather cheek valve is equipped in the through-hole two, and rear cover 15 has
The effect that breather cheek valve loosens, this structure is prevented to be convenient for carrying out dismounting and change or maintenance to breather cheek valve.
Embodiment 7
As depicted in figs. 1 and 2, a kind of reciprocal parallel rod-type transmission device, structure are compared with Example 6, different
It is：The breather cheek valve includes blocking first and elastic element one, and one end of the elastic element one and the blocking are first
It is fixedly connected, the other end of the elastic element one is fixedly connected with the rear cover 15, and the blocking is first in the elasticity member
The through-hole two is blocked under the elastic force effect of part one from inside to outside, is blocked so first in the (phase from inside to outside of elastic element one
For the position of cylinder body 1) resilient force under the clogging through-hole two blocked up to reach good blocking effect
There is round and smooth cambered surface, the inner wall of through-hole two also to have corresponding round and smooth cambered surface at the position that chock plug one is contacted with two inner wall of through-hole,
The size of through-hole two is slightly larger than the outer diameter for blocking first round and smooth cambered surface, to ensure that the two can fit closely.
The breather cheek valve course of work in the present embodiment is as follows：When piston 2 is moved towards exhaust outlet 7, in cylinder body 1
Air pressure is larger, compressed air act on block it is first on pressure direction from inside to outside (relative to cylinder body 1 position and
Speech), thus block it is first be tightly attached on the inner wall of through-hole two under the action of 1 inner air pressure of elastic force and cylinder body, prevent gas
Body is discharged by through-hole two；When an end motion of the piston 2 away from exhaust outlet, the pressure inside cylinder body 1 is gradually reduced, shape
After negative pressure, to blocking attraction of the capitiform at ecto-entad (for the position relative to cylinder body 1), which is more than elasticity
When element one acts on blocking first upper elastic force, blocking is first to form gap between the inner wall of through-hole two, and outside air exists
Entered inside cylinder body 1 by the gap under suction function.
Embodiment 8
As shown in Fig. 2, a kind of reciprocal parallel rod-type transmission device, structure compared with Example 6, except that：Institute
It states and is provided with annular groove 14 on the outer wall of piston only, sealing ring 10 is installed, in practical application in the annular groove 14
When, by the installation sealing ring 10 on the annular groove 14 of piston 2, the leakproofness between piston 2 and cylinder body 1 is increased, it can
Gas leakage is prevented, reduces air inlet energy consumption, the exhaust efficiency of piston 2 and cylinder body 1 also improves 20% or more, has good application
Foreground.
Embodiment 9
As depicted in figs. 1 and 2, a kind of electric air pump, including reciprocal parallel rod-type transmission device described in embodiment 1 and cylinder
Body 1, the piston 2 are located inside the cylinder body 1, and the one end of the cylinder body 1 far from the piston 2 is provided with exhaust outlet 7, described
One-way exhaust valve is installed, the driving motor is by driving the connecting rod 3 to drive the piston 2 in the cylinder at exhaust outlet 7
It is moved back and forth in body 1.
The present apparatus course of work is as follows：The driving motor is by driving the connecting rod 3 to drive the piston 2 far from exhaust
When mouth 7, negative pressure is formed in cylinder body 1, air enters from breather cheek valve in the cylinder body 1；The driving motor is by driving institute
When stating connecting rod 3 piston 2 being driven to be moved to exhaust outlet 7, by the air compression in the cylinder body 1 and by exhaust outlet 7
One-way exhaust valve is discharged, and so moves in circles, the inflation to balloon, basketball, swim ring, tire etc. may be implemented, back and forth transporting
The center line of piston 2 is parallel to the center line of the cylinder body 1 always during dynamic.
When practical application, structure identical with breather cheek valve may be used in the one-way exhaust valve, i.e.,：The unidirectional row
Air valve includes that blocking head 28 and elastic element 29, one end of the elastic element 29 are fixedly connected with the blocking head 28,
The other end of the elastic element 29 is fixed on the outside of the exhaust outlet 7, and the blocking head 28 is in the elastic element 29
The exhaust outlet 7 is blocked under the elastic force effect of ecto-entad (for the position of cylinder body 1).It is preferably stifled in order to reach
Fill in effect, position that head 28 is contacted with 27 inner wall of exhaust outlet blocked in the present embodiment with round and smooth cambered surface, exhaust outlet 7 it is interior
Wall also has corresponding round and smooth cambered surface, and the size of exhaust outlet 7 is slightly larger than the outer diameter for blocking 28 round and smooth cambered surface of head, the two energy
Enough fit closely.The one-way exhaust valve course of work of this structure is as follows：When piston 2 is moved towards exhaust outlet 7, in cylinder body
Air is compressed, gas compression to a certain extent when, the pressure inside cylinder body 1 is acted on more than elastic element 29 blocks head 28
Upper elastic force, thus block that head 28 is open-top by gas, the air of compression by block the gap between head 28 and exhaust outlet 7 to
Aerification function is realized in outer discharge；When an end motion of the piston 2 away from exhaust outlet 7, the pressure inside cylinder body 1 gradually subtracts
It is small, when pressure acts on elastic force on blocking head 28 less than elastic element 29, it is i.e. tight under the action of elastic force to block head 28
It is attached on the inner wall of exhaust outlet 7, gas is prevented to be discharged by exhaust outlet 7.When it is implemented, bullet may be used in elastic element 29
Spring.
Since the connecting rod 3 in the present apparatus will not be swung, the driving force of driving motor is driven by reciprocal parallel rod-type
After device conversion, the direction for acting on power on the piston 2 is parallel to the central axis of piston 2 always, it is ensured that piston 2 is back and forth being transported
During dynamic, the central axis of piston 2 is parallel to the central axis of cylinder body 1 always, and work is acted on so as to avoid due to connecting rod 3
The direction of power on plug 2 changes and piston 3 is caused to generate larger lateral pressure and frictional force to cylinder body 1, in turn results in
The problem of air pump energy consumption increases, the lost of life also ensures that tight fit is not in gap and leads between piston 2 and cylinder body 1
Cause gas leakage.The integral structure that piston 2 and connecting rod 3 in the present embodiment use, can be that piston 2 and connecting rod 3 are integrally machined into
The structure of type, can also in such a way that the piston 2 of separate structure is fixedly connected by bolt and nut etc. with connecting rod 3 so that
Connecting rod 3 cannot be rotated or be swung relative to piston 2, and piston 2 and connecting rod 3 are integrated the structure of machine-shaping in the present embodiment.
Embodiment 10
As shown in Figure 1, Figure 2 and Figure 3, a kind of electric air pump, structure compared with Example 9, except that：Further include
Shell 16 and exhaust passage, the cylinder body 1, the reciprocal parallel rod-type transmission device and the driving motor are respectively positioned on described outer
In shell 16, and one end of the shell 16 offers hole, and the exhaust outlet 7 is connected to by the exhaust passage with the hole, will
Each component is arranged in shell 16, is conveniently operated use, improves safety and portability.
Claims (10)
1. a kind of reciprocal parallel rod-type transmission device, including piston (2) and connecting rod (3), it is characterised in that：The connecting rod (3)
One end and the piston (2) are an integral structure, the central axis phase of the central axis and the connecting rod (3) of the piston (2)
Mutually parallel, the reciprocal parallel rod-type transmission device further includes interconnecting piece (4), cam pin (5) and rotating disc (6), the connecting rod
(3) the other end is provided with the interconnecting piece (4), and the cam pin (5) is provided on the rotating disc (6), described inclined
Heart pin (5) is located in the elongate holes, and the cam pin (5) is in the elongate holes along perpendicular to the connecting rod (3)
The length that movement locus when length direction moves is formed by straight line is equal to the cam pin (5) with the rotating disc (6)
Movement locus when rotation is formed by the length of diameter of a circle, and the rotating disc (6) connect with the driving motor.
2. reciprocal parallel rod-type transmission device according to claim 1, it is characterised in that：The cam pin (5) is cylinder
Type, and the elongate holes are along the straight of interior chamber size and the cylindrical type cam pin (5) on the connecting rod (3) length direction
Diameter matches.
3. reciprocal parallel rod-type transmission device according to claim 1, it is characterised in that：The periphery of the rotating disc (6)
Teeth are provided with, transmission gear is provided on the output shaft of the driving motor, the teeth on the rotating disc (6) and the biography
Moving gear is intermeshed.
4. reciprocal parallel rod-type transmission device according to claim 1, it is characterised in that：Further include and the rotating disc
(6) driven gear of coaxial setting, is provided with transmission gear on the output shaft of the driving motor, the driven gear with it is described
Transmission gear is intermeshed.
5. reciprocal parallel rod-type transmission device according to claim 1, it is characterised in that：The piston (2) is along center
Axis direction offers through-hole, and breather cheek valve is equipped in the through-hole.
6. reciprocal parallel rod-type transmission device according to claim 5, it is characterised in that：The piston (2) includes piston
Ontology and rear cover (15), the piston only opened up close to one end of the exhaust outlet (7) it is fluted, the groove with it is described after
The outer diameter of lid (15) matches, and the rear cover (15) and the piston only divide along the central axial direction of the piston (2)
Through-hole one and through-hole two are not offered, and the breather cheek valve is installed in the through-hole two.
7. reciprocal parallel rod-type transmission device according to claim 6, it is characterised in that：The breather cheek valve includes stifled
Chock plug one and elastic element one, one end of the elastic element one with it is described block it is first be fixedly connected, the elastic element one
The other end be fixedly connected with the rear cover (15), it is described block it is first the elastic element one from inside to outside elastic force effect
Under block the through-hole two.
8. reciprocal parallel rod-type transmission device according to claim 6, it is characterised in that：On the outer wall of the piston only
It is provided with annular groove (14), sealing ring (10) is installed in the annular groove (14).
9. a kind of electric air pump, it is characterised in that：It is passed including the reciprocal parallel rod-type described in any one of claim 1 to 8
Dynamic device and cylinder body (1), the piston (2) are located inside the cylinder body (1), and the one of the separate piston (2) of the cylinder body (1)
End is provided with exhaust outlet (7), one-way exhaust valve is equipped at the exhaust outlet (7), the driving motor is by driving the company
Bar (3) drives the piston (2) to be moved back and forth in the cylinder body (1).
10. electric air pump according to claim 9, it is characterised in that：Further include shell (16) and exhaust passage, the cylinder
Body (1), the reciprocal parallel rod-type transmission device and the driving motor are respectively positioned in the shell (16), and the shell
(16) one end offers hole, and the exhaust outlet (7) is connected to by the exhaust passage with the hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202729 | 2017-11-27 | ||
| CN2017112027297 | 2017-11-27 |
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| Publication Number | Publication Date |
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| CN108443106A true CN108443106A (en) | 2018-08-24 |
Family
ID=63203075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810430319.6A Pending CN108443106A (en) | 2017-11-27 | 2018-05-08 | A kind of back and forth parallel rod-type transmission device and electric air pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN108443106A (en) |
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