CN104976105A - Diaphragm vacuum pump - Google Patents
Diaphragm vacuum pump Download PDFInfo
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- CN104976105A CN104976105A CN201410676257.9A CN201410676257A CN104976105A CN 104976105 A CN104976105 A CN 104976105A CN 201410676257 A CN201410676257 A CN 201410676257A CN 104976105 A CN104976105 A CN 104976105A
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Abstract
The present invention provides a diaphragm vacuum pump having an enclosure structure with a simplified manufacturing process and a low manufacturing cost. The enclosure (21) of the diaphragm vacuum pump is formed by the combination of a pair of half enclosure bodies (22,23) made of synthetic resin. Each half enclosure body includes substrate parts (22a,23a) having a diaphragm installation part, and a pair of combined plate parts protruded from two opposite sides of the substrate parts to the direction of the other half enclosure part, bearing unit clamping parts (22c,23c) are arranged on the top of each combined plate parts, and the bearing unit clamping parts (22c,23c) are used for clamping a bearing unit (20), wherein, the bearing unit is used for supporting two ends of a cam shaft (12a), when the tops of the two combined plate parts combine mutually.
Description
Technical field
The present invention relates to a kind of vacuum diaphragm pump, specifically, relating to the structure of the casing of the driving mechanism for supporting vacuum diaphragm pump.
Background technique
As vacuum diaphragm pump, there is following a kind of vacuum diaphragm pump, it comprises: pump chamber, and it expands by being installed on the barrier film of connecting rod or reducing, and this connecting rod utilizes the crank mechanism being located at running shaft to move back and forth; Via the inlet air pathway that air inlet side safety check is connected with this pump chamber; And via the exhaust passageway that exhaust side safety check is connected with this pump chamber.In such vacuum diaphragm pump, also there is vacuum diaphragm pump a kind of as follows: utilize casing support with to become the motor of driving source be representative, the driving mechanism of running shaft etc., make casing be also used as shell.(for example, referring to patent documentation 1.)。
Patent documentation 1: Japanese Unexamined Patent Publication 6-185466 publication
Summary of the invention
the problem that invention will solve
The casing of vacuum diaphragm pump in the past applies machining by the metal section bar, die castings etc. higher to rigidity and forms the casing of tool mechanism in need and precision.Therefore, sometimes to spend the required labour such as machining and time, cost and sometimes also need surface treatment, thus make manufacturing process more, also require higher machining accuracy, therefore, cause the manufacture cost of casing to rise and make the price of vacuum diaphragm pump increase.
Therefore, the object of the invention is to, the vacuum diaphragm pump with following casing structure is provided: this casing structure can guarantee the important document required by the casing of vacuum diaphragm pump, and seek to simplify manufacturing process and seek to reduce manufacture cost.
for the scheme of dealing with problems
In order to realize described object, the invention provides a kind of vacuum diaphragm pump, it comprises: camshaft, and the output shaft of itself and motor rotates integratedly, crank mechanism, it carries out work under the rotarily driving of this camshaft, connector element, it can along moving back and forth with the substantially horizontal of the axis vertical take-off of described camshaft under this crank mechanism drives, barrier film, it is installed on the two end part of this connector element respectively, a pair pump chamber, the volume of this pair pump chamber is expanded by the action of this barrier film or reduces, the inlet air pathway be connected with each pump chamber and exhaust passageway, air inlet side safety check, its for limit fluid from described pump chamber to described inlet air pathway adverse current, and exhaust side safety check, its for limit fluid from described exhaust passageway to described pump chamber adverse current, by described camshaft, described crank mechanism and described connector element are accommodated in rectangular-shaped casing, and the two end part of described camshaft are held in respectively a pair opposite wall of described casing by bearing unit, it is characterized in that, described casing is by a pair that is formed by synthetic resin casing halfbody combination being formed, each casing halfbody comprise the baseplate part with barrier film assembly department with respectively from the relative both sides of this baseplate part towards a pair board portion that another casing halfbody direction is projecting, bearing unit clamping part is provided with on the top in each board portion, this bearing unit clamping part be used for by the top in two board portions each other in conjunction with time clamp described bearing unit.
Further, the feature of vacuum diaphragm pump of the present invention is, described each casing halfbody is formed respectively by ejection compress moulding method, and described synthetic resin is PC-GF.In addition, the feature of vacuum diaphragm pump of the present invention is, described each casing halfbody is provided with guide portion in described each board portion respectively, this guide portion be used in conjunction with time two board portions are guided to the binding site preset, the mode that described bearing unit comprises described camshaft is rotated support described camshaft bearing and for keeping the bearing housing of the periphery of this bearing, the engagement portion preventing bearing housing rotation and bearing housing movement in the axial direction for mutually engaging is provided with at the outer surface of this bearing housing and the internal surface of described bearing unit clamping part.
the effect of invention
Adopt vacuum diaphragm pump of the present invention, utilize synthetic resin to be formed the casing halfbody in the baseplate part comprising and there is pump chamber forming portion and the board portion with bearing unit clamping part, especially, the fiber-reinforced resin such to PC-GF (glass fiber reinforced polycarbonate) carries out ejection compress moulding method to be formed, and can form the casing halfbody of dimensional accuracy and excellent strength.By two casing halfbodies being combined under the state of bearing unit utilizing the bearing unit clamping part clamp cam axle of such casing halfbody, the mode bearer cams axle that can rotate using the camshaft enable as one of driving mechanism also forms the casing with barrier film assembly department for the formation of pump chamber, thus can when without the casing manufacturing the predetermined function required by the casing with vacuum diaphragm pump when machining simply.
In addition, guide portion is set by the board portion in advance at casing halfbody, two casing halfbodies can be made reliably to combine in the position of regulation.Further, by arranging the rotation prevention portion of engaging mutually in advance at the outer surface of bearing unit and the internal surface of bearing clamping part, bearing clamping part block bearing unit more reliably can be utilized.
Accompanying drawing explanation
Fig. 1 is the cross-sectional plan view of the vacuum diaphragm pump representing one embodiment of the invention.
Fig. 2 is the right elevation of this vacuum diaphragm pump.
Fig. 3 is the plan view of this vacuum diaphragm pump.
Fig. 4 is the exploded perspective view of major component.
Fig. 5 is the explanatory drawing of the working state of vacuum diaphragm pump.
Embodiment
As shown in Figure 1 to 4, the vacuum diaphragm pump 11 of the present embodiment comprises: motor 12; Camshaft 12a, it is connected with the output shaft 12b given prominence in the horizontal direction from this motor 12 and rotates; Crank mechanism 13, it carries out work by the eccentric cam 13a being located at this camshaft 12a; Connector element 14, it is installed on this crank mechanism 13, can move back and forth along the substantially horizontal orthogonal with camshaft 12b; Barrier film 15,16, this barrier film 15,16 is installed on the two end part of this connector element 14 respectively; A pair pump chamber 17,18, the volume of this pair pump chamber 17,18 is expanded by the advance and retreat of this barrier film 15,16 or is reduced; The inlet air pathway 17a be connected with pump chamber 17 and exhaust passageway 17b; The inlet air pathway 18a be connected with pump chamber 18 and exhaust passageway 18b; Air inlet side safety check 17c, 18c, this air inlet side safety check 17c, 18c are for limiting air from pump chamber 17,18 to inlet air pathway 17a, 18a adverse current; And exhaust side safety check 17d, 18d, this exhaust side safety check 17d, 18d are for limiting air from exhaust passageway 17b, 18b to pump chamber 17,18 adverse current.
Crank mechanism 13 comprises: eccentric cam 13a, and it is installed on camshaft 12a in the mode orthogonal with camshaft 12a and is integrally formed with this camshaft 12a and rotates; Driven member 13c, it is rotatably linked to the periphery of this eccentric cam 13a by the 1st bearing 13b; And described connector element 14, it is linked to this driven member 13c by the 2nd bearing 13d and connection pin 13e.Eccentric cam 13a is the component of the circle of the periphery being installed on camshaft 12a, configures in the mode that the central axis of this eccentric cam 13a and the central axis of camshaft 12a are positioned at different positions.Driven member 13c is formed as having the roughly tumbler shape of the large-diameter portion 13f being formed at end side and the minor diameter part 13g being formed at another side, this driven member 13c is connected with eccentric cam 13a by the described 1st bearing 13b being installed on the mounting hole formed on large-diameter portion 13f, and by the 2nd bearing 13d being installed on the mounting hole formed on minor diameter part 13g, connection pin 13e is installed, this connection pin 13e is linked with described connector element 14.
Connector element 14 for engaging between driven member 13c is by the board member 14b of the another side of the frame component 14a of the side and both ends of the surface that cover driven member 13c and covering driven member 13c, be formed in the end side of connector element 14 and run through for camshaft 12a and to allow the penetration hole 14c be made up of elongated hole of connector element 14 movement in the horizontal direction, be formed with the connection pin embedding hole 14d that confession is chimeric with the described connection pin 13e that driven member 13c is connected in another side of connector element 14.Further, assembly department 14e, the 14e for installing barrier film 15,16 is provided with at the two end part of frame component 14a.In addition, the length in the horizontal direction of connector element 14 is formed as following length: when a barrier film 15 is positioned at top dead center, another barrier film 16 is positioned at lower dead center, and when another barrier film 16 is positioned at top dead center, a barrier film 15 is positioned at lower dead center.In addition, the both sides of the crank mechanism 13 on camshaft 12a are separately installed with the counterbalance (equilibrium block) 19 for making crank mechanism 13 stably work, and are separately installed with bearing unit 20,20 at the two end part of camshaft 12a.
Bearing unit 20 is by being coated at the bearing 20a of camshaft 12a and being formed for the bearing housing 20b of the tubular keeping the periphery of this bearing 20a.The outer surface of bearing housing 20b has the rounded portions 20d of hexagonal horn-like part 20c and the circle with described Hexagon inscribe, and each summit of horn-like part 20c becomes from the outstanding state of the outer circumferential face of rounded portions 20d.In addition, in the present embodiment, use the bearing larger than the bearing of base portion side (motor-side) to carry out the tip portion of bearer cams axle 12a more reliably in tip side, thus prevent that the precession of the equinoxes is moved.
The crank mechanism 13 of formation like this is accommodated in rectangular-shaped casing 21.A pair casing halfbody 22,23 combines and is formed by casing 21, this a pair casing halfbody 22,23 fiber-reinforced resin such to PC-GF (glass fiber reinforced polycarbonate) carries out ejection compress moulding method and is formed, each casing halfbody 22,23 comprises: baseplate part 22a, 23a, and this baseplate part 22a, 23a have the barrier film assembly department 21a for installing described barrier film 15,16; And a pair board portion 22b, 23b, this pair board portion 22b, 23b are projecting towards another casing halfbody direction from the relative both sides of this baseplate part 22a, 23a respectively.Baseplate part 22a, 23a are formed by same shape, relative to this, bearing unit clamping part 22c, 23c is respectively equipped with on the top of each board portion 22b, 23b, this bearing unit clamping part 22c, 23c be used for by the top of two board portion 22b, 23b each other in conjunction with time clamp described bearing unit 20,20 and and be fixed, this bearing unit 20,20 is for supporting the two end part of described camshaft 12a in the mode enabling described camshaft 12a rotate.
Top end (parting plane) 22d, 23d central part between baseplate part 22a, 23a of described each board portion 22b, 23b, bearing unit clamping part 22c is formed as the concavity with the well width inserted for described bearing unit 20 for top end 22d, and bearing unit clamping part 22c is provided with the chamfered groove portion 22e that the half for described horn-like part 20c embeds and the half slot portion 22f embedded for the half of described rounded portions 20d at groove bottom.Another bearing unit clamping part 23c is formed as the convex be embedded in the concavity portion of a described bearing unit clamping part 22c for top end 23d, is provided with second half chamfered groove portion 23e embedded for described horn-like part 20c and second half the half slot portion 23f embedded for described rounded portions 20d in the tip portion of bearing unit clamping part 23c.And, be provided with at the concavity portion inner side surface of bearing unit clamping part 22c the steering channel 22g that the bonding position along board portion 22b, 23b extends, and be provided with at the protruding part outer side surface of bearing unit clamping part 23c the guiding raised line 23g be embedded in described steering channel 22g.
Two board portion 22b, 23b forms the casing 21 being accommodated with crank mechanism 13 by the following method: by the bearing unit 20 at the two ends of the camshaft 12a in the crank mechanism 13 that assembles in advance, 20 are embedded in casing halfbody 22 accordingly according to the angle of horn-like part 20c respectively, any one casing halfbody in 23, the bearing unit clamping part 22c of such as, board portion 22b in a casing halfbody 22, afterwards, make steering channel 22g and guide raised line 23g to fasten while a casing halfbody 22 and another casing halfbody 23 are combined, and make clamping bolt 22i run through with through two casing halfbodies 22, the bolt-through portion 22h that the mode of 23 is arranged, nut is utilized to carry out after 23h fastening.
Like this, ejection compress moulding method is carried out to fiber-reinforced resin and is formed as a pair casing halfbody 22,23 presetting shape, this a pair casing halfbody 22,23 is combined and forms the casing 21 being used for receiving the crank mechanism 13 assembled by camshaft 12a, driven member 13c, connector element 14 etc., thus, do not need, when utilizing metal to form machining when casing, significantly to simplify manufacturing process when making casing 21.In addition, by utilizing bearing unit clamping part 22c, the 23c being located at casing halfbody 22,23 to clamp for the bearing unit 20,20 of bearer cams axle 12a, bearing unit 20,20 being fixed, camshaft 12a also can be easy to be installed on casing 21.
Further, guide raised line 23g by arranging steering channel 22g in the tip portion of board portion 22b and arrange in the tip portion of board portion 23b in advance, casing halfbody 22,23 can be made reliably to be combined into the assembled state of regulation.In addition, by the outer surface of the bearing housing 20b at bearing unit 20, horn-like part 20c and rounded portions 20d is set, and chamfered groove portion 22e and half slot portion 22f is set on bearing unit clamping part 22c and chamfered groove portion 23e and half slot portion 23f is set on bearing unit clamping part 23c, make these components be the state mutually engaged, the axle center of two bearings unit 20,20 can be made consistent and can prevent bearing housing 20b from rotating and bearing housing 20b movement in the axial direction.
After casing 21 is assembled, the motor 12 that the output shaft 12b of the one end with camshaft 12a is connected is fixed on the motor mount 12c of the outside being arranged on casing 21, afterwards, the central part of barrier film 15,16 is installed on respectively assembly department 14e, the 14e at the two end part of connector element 14, the peripheral portion of barrier film 15,16 is installed on each barrier film assembly department 21a of described baseplate part 22a, 23a, and cover component 25 is installed on the outside of each barrier film assembly department 21a across Sealing 24, cover component 25 is installed each safety check, each path.In addition, installation motor cover 12d around motor 12, and the platen 11b being arranged on that lower surface has rubber pad 11a.
The periphery teat 21b that the edge of opening of the described barrier film assembly department 21a of the central part opening of each baseplate part 22a, 23a is formed ring-type outwardly respectively and the inner circumferential side being formed at periphery teat 21b, for installing all groove 21c of the periphery of described barrier film 15.Barrier film 15,16 is formed as going thinning discoid towards outer circumferential side from the central part of the heavy wall being installed on connector element 14, is formed with in the thinner wall section 15a of outer circumferential side, the outer periphery of 16a engaging teat 15b, 16b of fastening with described all groove 21c respectively.The central part of the barrier film 15,16 of formation like this is installed on the assembly department 14e of connector element 14, by engaging teat 15b, 16b being flush-mounted in described all groove 21c, 21c and from outside mounting cup component 25, thus engaging teat 15b, 16b are installed on all groove 21c, 21c airtightly, between the outer surface and the internal surface of cover component 25 of barrier film 15,16, form described pump chamber 17,18 thus.
Each cover component 25 comprises: the lip part 25a being installed on the periphery teat 21b of casing 21 across Sealing 24 airtightly; Abut against with engaging teat 15b, 16b of the barrier film 15,16 being flush-mounted in all groove 21c, 21c respectively and the press part 25b that will teat 15b, 16b be engaged press in all groove 21c, 21c; And be formed with the spherical shape recess 25c of pump chamber 17,18 between the outer surface of barrier film 15,16 respectively; For installing the inlet air pathway installation base portion 25d of inlet air pathway 17a, 18a respectively; For installing the exhaust passageway installation base portion 25e of exhaust passageway 17b, 18b respectively; For respectively by inlet hole 25f that inlet air pathway installation base portion 25d is connected with pump chamber 17,18; And for respectively by exhaust port 25g that exhaust passageway installation base portion 25e is connected with pump chamber 17,18.
Inlet air pathway 17a, 18a are formed by the L word pipe being provided with the large footpath assembly department embedding inlet air pathway installation base portion 25d at base end part, central for limiting the inner end that air is respectively integratedly installed on large footpath assembly department to described air inlet side safety check 17c, 18c of inlet air pathway 17a, 18a adverse current across Sealing from pump chamber 17,18 respectively.The large footpath assembly department of inlet air pathway 17a, 18a is embedded inlet air pathway installation base portion 25d, and utilizing pressing plate 26 that inlet air pathway 17a, 18a are installed on cover component 25 airtightly, inlet air pathway 17a, 18a are connected with pump chamber 17,18 with inlet hole 25f, 25f respectively via air inlet side safety check 17c, 18c.Exhaust passageway 17b, 18b are formed by the L word pipe identical with inlet air pathway 17a, 18a, are provided with the large footpath assembly department for embedding exhaust passageway installation base portion 25e at the base end part of exhaust passageway 17b, 18b.For limit air from exhaust passageway 17b, 18b to described exhaust side safety check 17d, 18d of pump chamber 17,18 adverse current across Sealing be installed on integratedly respectively this large footpath assembly department inner end central authorities.The large footpath assembly department of exhaust passageway 17b, 18b is embedded exhaust passageway installation base portion 25e, and utilizing pressing plate 26 that exhaust passageway 17b, 18b are installed on cover component 25 airtightly, exhaust passageway 17b, 18b are connected with pump chamber 17,18 with exhaust port 25g, 25g respectively via exhaust side safety check 17d, 18d.
A pump chamber 17 is provided with inlet air pathway 17a in the side by motor and is provided with exhaust passageway 17b in the side contrary with motor, another pump chamber 18 is provided with exhaust passageway 18b in the side by motor and is provided with inlet air pathway 18a in the side contrary with motor, usually, use under the state utilizing suitable connecting pipe 27 to be linked up by the exhaust passageway 17b of a pump chamber 17 and inlet air pathway 18a of another pump chamber 18.
According to Fig. 5, the operating state when using described vacuum diaphragm pump unit 11 to carry out the operation be also vented from decompression object intake-gas is described.In addition, in Figure 5, for convenience of description, the mode represented with cross-sectional plan view to pump chamber is described and the mode represented with side view so that crank mechanism to be described.Utilize connecting pipe 28 to be linked up by the inlet air pathway 18a of the exhaust passageway 17b of vacuum diaphragm pump unit 11 pump chamber 17 and another pump chamber 18 of vacuum diaphragm pump unit 11a, and under the state that decompression object is linked to the inlet air pathway 17a of a pump chamber 17, motor 12 is worked.First, as as shown in (A) of Fig. 5, barrier film 15 is positioned at lower dead center and the state that another barrier film 16 is positioned at top dead center rises, as shown in (B) of Fig. 5, when making eccentric cam 13a rotate 90 degree along clockwise direction together with camshaft 12a, thereupon carrying out driven, connector element 14 moves to pump chamber 17 side driven member 13c in the horizontal direction, thus, a barrier film 15 makes the smaller volume of a pump chamber 17 and becomes exhaust stroke, further, another barrier film 16 makes the volume enlargement of another pump chamber 18 and becomes intake stroke.Then, as shown in (C) of Fig. 5, when eccentric cam 13a rotates 180 degree along clockwise direction, barrier film 15 reaches top dead center and another barrier film 16 reaches lower dead center.Top dead center and another barrier film 16 is arrived at a barrier film 15 during top dead center arrives lower dead center from lower dead center during play the state of (C) of Fig. 5 in the state of (A) from this Fig. 5 till, namely, gas in exhaust stroke one pump chamber 17 is discharged from exhaust side safety check 17d, and this gas is drawn into another pump chamber 18 in intake stroke by exhaust passageway 17b, connecting pipe 28, inlet air pathway 18a and air inlet side safety check 18c.Now, in a pump chamber 17, utilize air inlet side safety check 17c to discharge to inlet air pathway 17a from pump chamber 17 to suppress gas, in another pump chamber 18, utilize exhaust side safety check 18d to suck in pump chamber 18 from exhaust passageway 18b to suppress gas.
And, as shown in (D) of Fig. 5, when eccentric cam 13a rotates 270 degree along clockwise direction, connector element 14 in the horizontal direction another pump chamber 18 side moves, thus, another barrier film 16 makes the smaller volume of pump chamber 18 and becomes exhaust stroke and a barrier film 15 makes the volume enlargement of pump chamber 17 and becomes intake stroke.Then, when eccentric cam 13a rotates 360 degree along clockwise direction, as shown in (A) of Fig. 5, barrier film 15 reaches lower dead center and another barrier film 16 reaches top dead center.Lower dead center and another barrier film 16 is arrived at a barrier film 15 during lower dead center arrives top dead center from top dead center during play the state of (A) of Fig. 5 in the state of (C) from this Fig. 5 till, namely, gas from decompression object to be drawn into via air inlet side safety check 17c from inlet air pathway 17a in a pump chamber 17 in intake stroke, the gas in another pump chamber 18 in exhaust stroke is discharged to exhaust passageway 18b from exhaust side safety check 18d.Now, in a pump chamber 17, utilize exhaust side safety check 17d to suck to pump chamber 17 from exhaust passageway 17b to suppress gas, in another pump chamber 18, utilize air inlet side safety check 18c to discharge to inlet air pathway 18a from pump chamber 18 to suppress gas.Like this, making two pump chambers 17,18 alternately repeatedly carry out intake stroke and exhaust stroke by utilizing motor 12 to make camshaft 12a rotate, the bleeding of decompression object can be carried out thus under the state be connected in series by two pump chambers 17,18.
In addition, form the resin material of casing halfbody, forming method can the condition such as intensity required by casing and suitably selecting, by casing halfbody each other in conjunction with time guide portion can with suitable shape arrange go up in position, this guide portion can also be omitted.In addition, prevent the method for bearing housing rotation and bearing housing movement to be in the axial direction not limited to described Hexagon and incircle, and arbitrary structure can be adopted, also only can utilize press-in, be fitted together to.Further, two pump chambers 17,18 can be used under the state be connected in parallel by two pump chambers 17,18.
description of reference numerals
11, vacuum diaphragm pump; 11a, rubber pad; 11b, platen; 12, motor; 12a, camshaft; 12b, output shaft; 12c, motor mount; 12d, motor cover; 13, crank mechanism; 13a, eccentric cam; 13b, the 1st bearing; 13c, driven member; 13d, the 2nd bearing; 13e, connection pin; 13f, large-diameter portion; 13g, minor diameter part; 14, connector element; 14a, frame component; 14b, board member; 14c, penetration hole; 14d, connection pin penetration hole; 14e, assembly department; 15,16, barrier film; 15a, 16a, thinner wall section; 15b, 16b, engaging teat; 17,18, pump chamber; 17a, 18a, inlet air pathway; 17b, 18b, exhaust passageway; 17c, 18c, air inlet side safety check; 17d, 18d, exhaust side safety check; 19, counterbalance; 20, bearing unit; 20a, bearing; 20b, bearing housing; 20c, horn-like part; 20d, rounded portions; 21, casing; 21a, barrier film assembly department; 21b, periphery teat; 21c, all grooves; 22,23, casing halfbody; 22a, 23a, baseplate part; 22b, 23b, board portion; 22c, 23c, bearing unit clamping part; 22d, 23d, top end; 22e, 23e, chamfered groove portion, 22f, 23f, half slot portion; 22g, steering channel; 23g, guiding raised line; 22h, 23h, bolt-through portion; 22i, clamping bolt; 24, Sealing; 25, cover component; 25a, lip part; 25b, press part; 25c, spherical shape recess; 25d, inlet air pathway boss part; 25e, exhaust passageway boss part; 25f, inlet hole; 25g, exhaust port; 26, pressing plate; 27, connecting pipe.
Claims (5)
1. a vacuum diaphragm pump, it comprises: camshaft, and the output shaft of itself and motor rotates integratedly; Crank mechanism, it carries out work under the rotarily driving of this camshaft; Connector element, it can along moving back and forth with the substantially horizontal of the axis vertical take-off of described camshaft under this crank mechanism drives; Barrier film, it is installed on the two end part of this connector element respectively; A pair pump chamber, the volume of this pair pump chamber is expanded by the action of this barrier film or reduces; The inlet air pathway be connected with each pump chamber and exhaust passageway; Air inlet side safety check, its for limit fluid from described pump chamber to described inlet air pathway adverse current; And exhaust side safety check, its for limit fluid from described exhaust passageway to described pump chamber adverse current, described camshaft, described crank mechanism and described connector element are accommodated in rectangular-shaped casing, and the two end part of described camshaft are held in respectively a pair opposite wall of described casing by bearing unit, it is characterized in that
Described casing is by a pair that is formed by synthetic resin casing halfbody combination being formed, each casing halfbody comprise the baseplate part with barrier film assembly department with respectively from the relative both sides of this baseplate part towards a pair board portion that another casing halfbody direction is projecting, be provided with bearing unit clamping part on the top in each board portion, this bearing unit clamping part be used for by the top in two board portions each other in conjunction with time clamp described bearing unit.
2. vacuum diaphragm pump according to claim 1, is characterized in that,
Described each casing halfbody is formed respectively by ejection compress moulding method.
3. vacuum diaphragm pump according to claim 1 and 2, is characterized in that,
Described synthetic resin is PC-GF.
4. vacuum diaphragm pump according to claim 1 and 2, is characterized in that,
Described each casing halfbody is provided with guide portion in described each board portion respectively, this guide portion be used in conjunction with time two board portions are guided to the binding site preset.
5. vacuum diaphragm pump according to claim 1 and 2, is characterized in that,
The mode that described bearing unit comprises described camshaft is rotated support described camshaft bearing and for keeping the bearing housing of the periphery of this bearing, be provided with at the outer surface of this bearing housing and the internal surface of described bearing unit clamping part and prevent for mutually engaging bearing housing from rotating and the engagement portion of bearing housing movement in the axial direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014081767A JP6424012B2 (en) | 2014-04-11 | 2014-04-11 | Diaphragm vacuum pump |
| JP2014-081767 | 2014-04-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104976105A true CN104976105A (en) | 2015-10-14 |
| CN104976105B CN104976105B (en) | 2019-07-16 |
Family
ID=54272942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410676257.9A Active CN104976105B (en) | 2014-04-11 | 2014-11-21 | Vacuum diaphragm pump |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6424012B2 (en) |
| CN (1) | CN104976105B (en) |
| HK (1) | HK1214637A1 (en) |
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- 2014-04-11 JP JP2014081767A patent/JP6424012B2/en active Active
- 2014-11-21 CN CN201410676257.9A patent/CN104976105B/en active Active
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- 2016-03-01 HK HK16102353.9A patent/HK1214637A1/en unknown
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| JPS5517640A (en) * | 1978-07-21 | 1980-02-07 | Nippon Denso Co Ltd | Diaphragm pump |
| JP2001329963A (en) * | 2000-05-17 | 2001-11-30 | Erc:Kk | Diaphragm type pump and deaerating device using the pump |
| JP2002359954A (en) * | 2001-05-31 | 2002-12-13 | Koyo Seiko Co Ltd | Brushless dc motor and motor-driven power steering device including the same |
| JP2004270509A (en) * | 2003-03-07 | 2004-09-30 | Matsushita Electric Ind Co Ltd | Air pump |
| JP2005194909A (en) * | 2004-01-05 | 2005-07-21 | Bridgestone Corp | Gear pump |
| CN101801749A (en) * | 2007-09-11 | 2010-08-11 | 大陆-特韦斯贸易合伙股份公司及两合公司 | The electric-motor pump group |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015203317A (en) | 2015-11-16 |
| HK1214637A1 (en) | 2016-07-29 |
| CN104976105B (en) | 2019-07-16 |
| JP6424012B2 (en) | 2018-11-14 |
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